drivers/net/ethernet/freescale/gianfar_ethtool.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  drivers/net/ethernet/freescale/gianfar_ethtool.c
   4  *
   5  *  Gianfar Ethernet Driver
   6  *  Ethtool support for Gianfar Enet
   7  *  Based on e1000 ethtool support
   8  *
   9  *  Author: Andy Fleming
  10  *  Maintainer: Kumar Gala
  11  *  Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
  12  *
  13  *  Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc.
  14  */
  15
  16 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  17
  18 #include <linux/kernel.h>
  19 #include <linux/string.h>
  20 #include <linux/errno.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/delay.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/etherdevice.h>
  25 #include <linux/net_tstamp.h>
  26 #include <linux/skbuff.h>
  27 #include <linux/spinlock.h>
  28 #include <linux/mm.h>
  29
  30 #include <asm/io.h>
  31 #include <asm/irq.h>
  32 #include <linux/uaccess.h>
  33 #include <linux/module.h>
  34 #include <linux/crc32.h>
  35 #include <asm/types.h>
  36 #include <linux/ethtool.h>
  37 #include <linux/mii.h>
  38 #include <linux/phy.h>
  39 #include <linux/sort.h>
  40 #include <linux/if_vlan.h>
  41 #include <linux/of_platform.h>
  42 #include <linux/fsl/ptp_qoriq.h>
  43
  44 #include "gianfar.h"
  45
  46 #define GFAR_MAX_COAL_USECS 0xffff
  47 #define GFAR_MAX_COAL_FRAMES 0xff
  48
  49 static const char stat_gstrings[][ETH_GSTRING_LEN] = {
  50         /* extra stats */
  51         "rx-allocation-errors",
  52         "rx-large-frame-errors",
  53         "rx-short-frame-errors",
  54         "rx-non-octet-errors",
  55         "rx-crc-errors",
  56         "rx-overrun-errors",
  57         "rx-busy-errors",
  58         "rx-babbling-errors",
  59         "rx-truncated-frames",
  60         "ethernet-bus-error",
  61         "tx-babbling-errors",
  62         "tx-underrun-errors",
  63         "tx-timeout-errors",
  64         /* rmon stats */
  65         "tx-rx-64-frames",
  66         "tx-rx-65-127-frames",
  67         "tx-rx-128-255-frames",
  68         "tx-rx-256-511-frames",
  69         "tx-rx-512-1023-frames",
  70         "tx-rx-1024-1518-frames",
  71         "tx-rx-1519-1522-good-vlan",
  72         "rx-bytes",
  73         "rx-packets",
  74         "rx-fcs-errors",
  75         "receive-multicast-packet",
  76         "receive-broadcast-packet",
  77         "rx-control-frame-packets",
  78         "rx-pause-frame-packets",
  79         "rx-unknown-op-code",
  80         "rx-alignment-error",
  81         "rx-frame-length-error",
  82         "rx-code-error",
  83         "rx-carrier-sense-error",
  84         "rx-undersize-packets",
  85         "rx-oversize-packets",
  86         "rx-fragmented-frames",
  87         "rx-jabber-frames",
  88         "rx-dropped-frames",
  89         "tx-byte-counter",
  90         "tx-packets",
  91         "tx-multicast-packets",
  92         "tx-broadcast-packets",
  93         "tx-pause-control-frames",
  94         "tx-deferral-packets",
  95         "tx-excessive-deferral-packets",
  96         "tx-single-collision-packets",
  97         "tx-multiple-collision-packets",
  98         "tx-late-collision-packets",
  99         "tx-excessive-collision-packets",
 100         "tx-total-collision",
 101         "reserved",
 102         "tx-dropped-frames",
 103         "tx-jabber-frames",
 104         "tx-fcs-errors",
 105         "tx-control-frames",
 106         "tx-oversize-frames",
 107         "tx-undersize-frames",
 108         "tx-fragmented-frames",
 109 };
 110
 111 /* Fill in a buffer with the strings which correspond to the
 112  * stats */
 113 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
 114 {
 115         struct gfar_private *priv = netdev_priv(dev);
 116
 117         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
 118                 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
 119         else
 120                 memcpy(buf, stat_gstrings,
 121                        GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
 122 }
 123
 124 /* Fill in an array of 64-bit statistics from various sources.
 125  * This array will be appended to the end of the ethtool_stats
 126  * structure, and returned to user space
 127  */
 128 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
 129                             u64 *buf)
 130 {
 131         int i;
 132         struct gfar_private *priv = netdev_priv(dev);
 133         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 134         atomic64_t *extra = (atomic64_t *)&priv->extra_stats;
 135
 136         for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
 137                 buf[i] = atomic64_read(&extra[i]);
 138
 139         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
 140                 u32 __iomem *rmon = (u32 __iomem *) &regs->rmon;
 141
 142                 for (; i < GFAR_STATS_LEN; i++, rmon++)
 143                         buf[i] = (u64) gfar_read(rmon);
 144         }
 145 }
 146
 147 static int gfar_sset_count(struct net_device *dev, int sset)
 148 {
 149         struct gfar_private *priv = netdev_priv(dev);
 150
 151         switch (sset) {
 152         case ETH_SS_STATS:
 153                 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
 154                         return GFAR_STATS_LEN;
 155                 else
 156                         return GFAR_EXTRA_STATS_LEN;
 157         default:
 158                 return -EOPNOTSUPP;
 159         }
 160 }
 161
 162 /* Fills in the drvinfo structure with some basic info */
 163 static void gfar_gdrvinfo(struct net_device *dev,
 164                           struct ethtool_drvinfo *drvinfo)
 165 {
 166         strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
 167 }
 168
 169 /* Return the length of the register structure */
 170 static int gfar_reglen(struct net_device *dev)
 171 {
 172         return sizeof (struct gfar);
 173 }
 174
 175 /* Return a dump of the GFAR register space */
 176 static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 177                           void *regbuf)
 178 {
 179         int i;
 180         struct gfar_private *priv = netdev_priv(dev);
 181         u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
 182         u32 *buf = (u32 *) regbuf;
 183
 184         for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
 185                 buf[i] = gfar_read(&theregs[i]);
 186 }
 187
 188 /* Convert microseconds to ethernet clock ticks, which changes
 189  * depending on what speed the controller is running at */
 190 static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
 191                                      unsigned int usecs)
 192 {
 193         struct net_device *ndev = priv->ndev;
 194         struct phy_device *phydev = ndev->phydev;
 195         unsigned int count;
 196
 197         /* The timer is different, depending on the interface speed */
 198         switch (phydev->speed) {
 199         case SPEED_1000:
 200                 count = GFAR_GBIT_TIME;
 201                 break;
 202         case SPEED_100:
 203                 count = GFAR_100_TIME;
 204                 break;
 205         case SPEED_10:
 206         default:
 207                 count = GFAR_10_TIME;
 208                 break;
 209         }
 210
 211         /* Make sure we return a number greater than 0
 212          * if usecs > 0 */
 213         return DIV_ROUND_UP(usecs * 1000, count);
 214 }
 215
 216 /* Convert ethernet clock ticks to microseconds */
 217 static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
 218                                      unsigned int ticks)
 219 {
 220         struct net_device *ndev = priv->ndev;
 221         struct phy_device *phydev = ndev->phydev;
 222         unsigned int count;
 223
 224         /* The timer is different, depending on the interface speed */
 225         switch (phydev->speed) {
 226         case SPEED_1000:
 227                 count = GFAR_GBIT_TIME;
 228                 break;
 229         case SPEED_100:
 230                 count = GFAR_100_TIME;
 231                 break;
 232         case SPEED_10:
 233         default:
 234                 count = GFAR_10_TIME;
 235                 break;
 236         }
 237
 238         /* Make sure we return a number greater than 0 */
 239         /* if ticks is > 0 */
 240         return (ticks * count) / 1000;
 241 }
 242
 243 /* Get the coalescing parameters, and put them in the cvals
 244  * structure.  */
 245 static int gfar_gcoalesce(struct net_device *dev,
 246                           struct ethtool_coalesce *cvals)
 247 {
 248         struct gfar_private *priv = netdev_priv(dev);
 249         struct gfar_priv_rx_q *rx_queue = NULL;
 250         struct gfar_priv_tx_q *tx_queue = NULL;
 251         unsigned long rxtime;
 252         unsigned long rxcount;
 253         unsigned long txtime;
 254         unsigned long txcount;
 255
 256         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 257                 return -EOPNOTSUPP;
 258
 259         if (!dev->phydev)
 260                 return -ENODEV;
 261
 262         rx_queue = priv->rx_queue[0];
 263         tx_queue = priv->tx_queue[0];
 264
 265         rxtime  = get_ictt_value(rx_queue->rxic);
 266         rxcount = get_icft_value(rx_queue->rxic);
 267         txtime  = get_ictt_value(tx_queue->txic);
 268         txcount = get_icft_value(tx_queue->txic);
 269         cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
 270         cvals->rx_max_coalesced_frames = rxcount;
 271
 272         cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
 273         cvals->tx_max_coalesced_frames = txcount;
 274
 275         return 0;
 276 }
 277
 278 /* Change the coalescing values.
 279  * Both cvals->*_usecs and cvals->*_frames have to be > 0
 280  * in order for coalescing to be active
 281  */
 282 static int gfar_scoalesce(struct net_device *dev,
 283                           struct ethtool_coalesce *cvals)
 284 {
 285         struct gfar_private *priv = netdev_priv(dev);
 286         int i, err = 0;
 287
 288         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 289                 return -EOPNOTSUPP;
 290
 291         if (!dev->phydev)
 292                 return -ENODEV;
 293
 294         /* Check the bounds of the values */
 295         if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 296                 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
 297                             GFAR_MAX_COAL_USECS);
 298                 return -EINVAL;
 299         }
 300
 301         if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 302                 netdev_info(dev, "Coalescing is limited to %d frames\n",
 303                             GFAR_MAX_COAL_FRAMES);
 304                 return -EINVAL;
 305         }
 306
 307         /* Check the bounds of the values */
 308         if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 309                 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
 310                             GFAR_MAX_COAL_USECS);
 311                 return -EINVAL;
 312         }
 313
 314         if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 315                 netdev_info(dev, "Coalescing is limited to %d frames\n",
 316                             GFAR_MAX_COAL_FRAMES);
 317                 return -EINVAL;
 318         }
 319
 320         while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 321                 cpu_relax();
 322
 323         /* Set up rx coalescing */
 324         if ((cvals->rx_coalesce_usecs == 0) ||
 325             (cvals->rx_max_coalesced_frames == 0)) {
 326                 for (i = 0; i < priv->num_rx_queues; i++)
 327                         priv->rx_queue[i]->rxcoalescing = 0;
 328         } else {
 329                 for (i = 0; i < priv->num_rx_queues; i++)
 330                         priv->rx_queue[i]->rxcoalescing = 1;
 331         }
 332
 333         for (i = 0; i < priv->num_rx_queues; i++) {
 334                 priv->rx_queue[i]->rxic = mk_ic_value(
 335                         cvals->rx_max_coalesced_frames,
 336                         gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
 337         }
 338
 339         /* Set up tx coalescing */
 340         if ((cvals->tx_coalesce_usecs == 0) ||
 341             (cvals->tx_max_coalesced_frames == 0)) {
 342                 for (i = 0; i < priv->num_tx_queues; i++)
 343                         priv->tx_queue[i]->txcoalescing = 0;
 344         } else {
 345                 for (i = 0; i < priv->num_tx_queues; i++)
 346                         priv->tx_queue[i]->txcoalescing = 1;
 347         }
 348
 349         for (i = 0; i < priv->num_tx_queues; i++) {
 350                 priv->tx_queue[i]->txic = mk_ic_value(
 351                         cvals->tx_max_coalesced_frames,
 352                         gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
 353         }
 354
 355         if (dev->flags & IFF_UP) {
 356                 stop_gfar(dev);
 357                 err = startup_gfar(dev);
 358         } else {
 359                 gfar_mac_reset(priv);
 360         }
 361
 362         clear_bit_unlock(GFAR_RESETTING, &priv->state);
 363
 364         return err;
 365 }
 366
 367 /* Fills in rvals with the current ring parameters.  Currently,
 368  * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
 369  * jumbo are ignored by the driver */
 370 static void gfar_gringparam(struct net_device *dev,
 371                             struct ethtool_ringparam *rvals)
 372 {
 373         struct gfar_private *priv = netdev_priv(dev);
 374         struct gfar_priv_tx_q *tx_queue = NULL;
 375         struct gfar_priv_rx_q *rx_queue = NULL;
 376
 377         tx_queue = priv->tx_queue[0];
 378         rx_queue = priv->rx_queue[0];
 379
 380         rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
 381         rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
 382         rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
 383         rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
 384
 385         /* Values changeable by the user.  The valid values are
 386          * in the range 1 to the "*_max_pending" counterpart above.
 387          */
 388         rvals->rx_pending = rx_queue->rx_ring_size;
 389         rvals->rx_mini_pending = rx_queue->rx_ring_size;
 390         rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
 391         rvals->tx_pending = tx_queue->tx_ring_size;
 392 }
 393
 394 /* Change the current ring parameters, stopping the controller if
 395  * necessary so that we don't mess things up while we're in motion.
 396  */
 397 static int gfar_sringparam(struct net_device *dev,
 398                            struct ethtool_ringparam *rvals)
 399 {
 400         struct gfar_private *priv = netdev_priv(dev);
 401         int err = 0, i;
 402
 403         if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
 404                 return -EINVAL;
 405
 406         if (!is_power_of_2(rvals->rx_pending)) {
 407                 netdev_err(dev, "Ring sizes must be a power of 2\n");
 408                 return -EINVAL;
 409         }
 410
 411         if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
 412                 return -EINVAL;
 413
 414         if (!is_power_of_2(rvals->tx_pending)) {
 415                 netdev_err(dev, "Ring sizes must be a power of 2\n");
 416                 return -EINVAL;
 417         }
 418
 419         while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 420                 cpu_relax();
 421
 422         if (dev->flags & IFF_UP)
 423                 stop_gfar(dev);
 424
 425         /* Change the sizes */
 426         for (i = 0; i < priv->num_rx_queues; i++)
 427                 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
 428
 429         for (i = 0; i < priv->num_tx_queues; i++)
 430                 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
 431
 432         /* Rebuild the rings with the new size */
 433         if (dev->flags & IFF_UP)
 434                 err = startup_gfar(dev);
 435
 436         clear_bit_unlock(GFAR_RESETTING, &priv->state);
 437
 438         return err;
 439 }
 440
 441 static void gfar_gpauseparam(struct net_device *dev,
 442                              struct ethtool_pauseparam *epause)
 443 {
 444         struct gfar_private *priv = netdev_priv(dev);
 445
 446         epause->autoneg = !!priv->pause_aneg_en;
 447         epause->rx_pause = !!priv->rx_pause_en;
 448         epause->tx_pause = !!priv->tx_pause_en;
 449 }
 450
 451 static int gfar_spauseparam(struct net_device *dev,
 452                             struct ethtool_pauseparam *epause)
 453 {
 454         struct gfar_private *priv = netdev_priv(dev);
 455         struct phy_device *phydev = dev->phydev;
 456         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 457
 458         if (!phydev)
 459                 return -ENODEV;
 460
 461         if (!phy_validate_pause(phydev, epause))
 462                 return -EINVAL;
 463
 464         priv->rx_pause_en = priv->tx_pause_en = 0;
 465         phy_set_asym_pause(phydev, epause->rx_pause, epause->tx_pause);
 466         if (epause->rx_pause) {
 467                 priv->rx_pause_en = 1;
 468
 469                 if (epause->tx_pause) {
 470                         priv->tx_pause_en = 1;
 471                 }
 472         } else if (epause->tx_pause) {
 473                 priv->tx_pause_en = 1;
 474         }
 475
 476         if (epause->autoneg)
 477                 priv->pause_aneg_en = 1;
 478         else
 479                 priv->pause_aneg_en = 0;
 480
 481         if (!epause->autoneg) {
 482                 u32 tempval = gfar_read(&regs->maccfg1);
 483
 484                 tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
 485
 486                 priv->tx_actual_en = 0;
 487                 if (priv->tx_pause_en) {
 488                         priv->tx_actual_en = 1;
 489                         tempval |= MACCFG1_TX_FLOW;
 490                 }
 491
 492                 if (priv->rx_pause_en)
 493                         tempval |= MACCFG1_RX_FLOW;
 494                 gfar_write(&regs->maccfg1, tempval);
 495         }
 496
 497         return 0;
 498 }
 499
 500 int gfar_set_features(struct net_device *dev, netdev_features_t features)
 501 {
 502         netdev_features_t changed = dev->features ^ features;
 503         struct gfar_private *priv = netdev_priv(dev);
 504         int err = 0;
 505
 506         if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
 507                          NETIF_F_RXCSUM)))
 508                 return 0;
 509
 510         while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 511                 cpu_relax();
 512
 513         dev->features = features;
 514
 515         if (dev->flags & IFF_UP) {
 516                 /* Now we take down the rings to rebuild them */
 517                 stop_gfar(dev);
 518                 err = startup_gfar(dev);
 519         } else {
 520                 gfar_mac_reset(priv);
 521         }
 522
 523         clear_bit_unlock(GFAR_RESETTING, &priv->state);
 524
 525         return err;
 526 }
 527
 528 static uint32_t gfar_get_msglevel(struct net_device *dev)
 529 {
 530         struct gfar_private *priv = netdev_priv(dev);
 531
 532         return priv->msg_enable;
 533 }
 534
 535 static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
 536 {
 537         struct gfar_private *priv = netdev_priv(dev);
 538
 539         priv->msg_enable = data;
 540 }
 541
 542 #ifdef CONFIG_PM
 543 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 544 {
 545         struct gfar_private *priv = netdev_priv(dev);
 546
 547         wol->supported = 0;
 548         wol->wolopts = 0;
 549
 550         if (priv->wol_supported & GFAR_WOL_MAGIC)
 551                 wol->supported |= WAKE_MAGIC;
 552
 553         if (priv->wol_supported & GFAR_WOL_FILER_UCAST)
 554                 wol->supported |= WAKE_UCAST;
 555
 556         if (priv->wol_opts & GFAR_WOL_MAGIC)
 557                 wol->wolopts |= WAKE_MAGIC;
 558
 559         if (priv->wol_opts & GFAR_WOL_FILER_UCAST)
 560                 wol->wolopts |= WAKE_UCAST;
 561 }
 562
 563 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 564 {
 565         struct gfar_private *priv = netdev_priv(dev);
 566         u16 wol_opts = 0;
 567         int err;
 568
 569         if (!priv->wol_supported && wol->wolopts)
 570                 return -EINVAL;
 571
 572         if (wol->wolopts & ~(WAKE_MAGIC | WAKE_UCAST))
 573                 return -EINVAL;
 574
 575         if (wol->wolopts & WAKE_MAGIC) {
 576                 wol_opts |= GFAR_WOL_MAGIC;
 577         } else {
 578                 if (wol->wolopts & WAKE_UCAST)
 579                         wol_opts |= GFAR_WOL_FILER_UCAST;
 580         }
 581
 582         wol_opts &= priv->wol_supported;
 583         priv->wol_opts = 0;
 584
 585         err = device_set_wakeup_enable(priv->dev, wol_opts);
 586         if (err)
 587                 return err;
 588
 589         priv->wol_opts = wol_opts;
 590
 591         return 0;
 592 }
 593 #endif
 594
 595 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
 596 {
 597         u32 fcr = 0x0, fpr = FPR_FILER_MASK;
 598
 599         if (ethflow & RXH_L2DA) {
 600                 fcr = RQFCR_PID_DAH | RQFCR_CMP_NOMATCH |
 601                       RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 602                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 603                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 604                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 605                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 606
 607                 fcr = RQFCR_PID_DAL | RQFCR_CMP_NOMATCH |
 608                       RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 609                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 610                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 611                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 612                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 613         }
 614
 615         if (ethflow & RXH_VLAN) {
 616                 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 617                       RQFCR_AND | RQFCR_HASHTBL_0;
 618                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 619                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 620                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 621                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 622         }
 623
 624         if (ethflow & RXH_IP_SRC) {
 625                 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 626                       RQFCR_AND | RQFCR_HASHTBL_0;
 627                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 628                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 629                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 630                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 631         }
 632
 633         if (ethflow & (RXH_IP_DST)) {
 634                 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 635                       RQFCR_AND | RQFCR_HASHTBL_0;
 636                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 637                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 638                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 639                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 640         }
 641
 642         if (ethflow & RXH_L3_PROTO) {
 643                 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 644                       RQFCR_AND | RQFCR_HASHTBL_0;
 645                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 646                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 647                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 648                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 649         }
 650
 651         if (ethflow & RXH_L4_B_0_1) {
 652                 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 653                       RQFCR_AND | RQFCR_HASHTBL_0;
 654                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 655                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 656                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 657                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 658         }
 659
 660         if (ethflow & RXH_L4_B_2_3) {
 661                 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 662                       RQFCR_AND | RQFCR_HASHTBL_0;
 663                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 664                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 665                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 666                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 667         }
 668 }
 669
 670 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
 671                                        u64 class)
 672 {
 673         unsigned int cmp_rqfpr;
 674         unsigned int *local_rqfpr;
 675         unsigned int *local_rqfcr;
 676         int i = 0x0, k = 0x0;
 677         int j = MAX_FILER_IDX, l = 0x0;
 678         int ret = 1;
 679
 680         local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 681                                     GFP_KERNEL);
 682         local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 683                                     GFP_KERNEL);
 684         if (!local_rqfpr || !local_rqfcr) {
 685                 ret = 0;
 686                 goto err;
 687         }
 688
 689         switch (class) {
 690         case TCP_V4_FLOW:
 691                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
 692                 break;
 693         case UDP_V4_FLOW:
 694                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
 695                 break;
 696         case TCP_V6_FLOW:
 697                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
 698                 break;
 699         case UDP_V6_FLOW:
 700                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
 701                 break;
 702         default:
 703                 netdev_err(priv->ndev,
 704                            "Right now this class is not supported\n");
 705                 ret = 0;
 706                 goto err;
 707         }
 708
 709         for (i = 0; i < MAX_FILER_IDX + 1; i++) {
 710                 local_rqfpr[j] = priv->ftp_rqfpr[i];
 711                 local_rqfcr[j] = priv->ftp_rqfcr[i];
 712                 j--;
 713                 if ((priv->ftp_rqfcr[i] ==
 714                      (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
 715                     (priv->ftp_rqfpr[i] == cmp_rqfpr))
 716                         break;
 717         }
 718
 719         if (i == MAX_FILER_IDX + 1) {
 720                 netdev_err(priv->ndev,
 721                            "No parse rule found, can't create hash rules\n");
 722                 ret = 0;
 723                 goto err;
 724         }
 725
 726         /* If a match was found, then it begins the starting of a cluster rule
 727          * if it was already programmed, we need to overwrite these rules
 728          */
 729         for (l = i+1; l < MAX_FILER_IDX; l++) {
 730                 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 731                     !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
 732                         priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
 733                                              RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
 734                         priv->ftp_rqfpr[l] = FPR_FILER_MASK;
 735                         gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
 736                                          priv->ftp_rqfpr[l]);
 737                         break;
 738                 }
 739
 740                 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 741                         (priv->ftp_rqfcr[l] & RQFCR_AND))
 742                         continue;
 743                 else {
 744                         local_rqfpr[j] = priv->ftp_rqfpr[l];
 745                         local_rqfcr[j] = priv->ftp_rqfcr[l];
 746                         j--;
 747                 }
 748         }
 749
 750         priv->cur_filer_idx = l - 1;
 751
 752         /* hash rules */
 753         ethflow_to_filer_rules(priv, ethflow);
 754
 755         /* Write back the popped out rules again */
 756         for (k = j+1; k < MAX_FILER_IDX; k++) {
 757                 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
 758                 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
 759                 gfar_write_filer(priv, priv->cur_filer_idx,
 760                                  local_rqfcr[k], local_rqfpr[k]);
 761                 if (!priv->cur_filer_idx)
 762                         break;
 763                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 764         }
 765
 766 err:
 767         kfree(local_rqfcr);
 768         kfree(local_rqfpr);
 769         return ret;
 770 }
 771
 772 static int gfar_set_hash_opts(struct gfar_private *priv,
 773                               struct ethtool_rxnfc *cmd)
 774 {
 775         /* write the filer rules here */
 776         if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
 777                 return -EINVAL;
 778
 779         return 0;
 780 }
 781
 782 static int gfar_check_filer_hardware(struct gfar_private *priv)
 783 {
 784         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 785         u32 i;
 786
 787         /* Check if we are in FIFO mode */
 788         i = gfar_read(&regs->ecntrl);
 789         i &= ECNTRL_FIFM;
 790         if (i == ECNTRL_FIFM) {
 791                 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
 792                 i = gfar_read(&regs->rctrl);
 793                 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
 794                 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
 795                         netdev_info(priv->ndev,
 796                                     "Receive Queue Filtering enabled\n");
 797                 } else {
 798                         netdev_warn(priv->ndev,
 799                                     "Receive Queue Filtering disabled\n");
 800                         return -EOPNOTSUPP;
 801                 }
 802         }
 803         /* Or in standard mode */
 804         else {
 805                 i = gfar_read(&regs->rctrl);
 806                 i &= RCTRL_PRSDEP_MASK;
 807                 if (i == RCTRL_PRSDEP_MASK) {
 808                         netdev_info(priv->ndev,
 809                                     "Receive Queue Filtering enabled\n");
 810                 } else {
 811                         netdev_warn(priv->ndev,
 812                                     "Receive Queue Filtering disabled\n");
 813                         return -EOPNOTSUPP;
 814                 }
 815         }
 816
 817         /* Sets the properties for arbitrary filer rule
 818          * to the first 4 Layer 4 Bytes
 819          */
 820         gfar_write(&regs->rbifx, 0xC0C1C2C3);
 821         return 0;
 822 }
 823
 824 /* Write a mask to filer cache */
 825 static void gfar_set_mask(u32 mask, struct filer_table *tab)
 826 {
 827         tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
 828         tab->fe[tab->index].prop = mask;
 829         tab->index++;
 830 }
 831
 832 /* Sets parse bits (e.g. IP or TCP) */
 833 static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
 834 {
 835         gfar_set_mask(mask, tab);
 836         tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
 837                                    RQFCR_AND;
 838         tab->fe[tab->index].prop = value;
 839         tab->index++;
 840 }
 841
 842 static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
 843                                        struct filer_table *tab)
 844 {
 845         gfar_set_mask(mask, tab);
 846         tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
 847         tab->fe[tab->index].prop = value;
 848         tab->index++;
 849 }
 850
 851 /* For setting a tuple of value and mask of type flag
 852  * Example:
 853  * IP-Src = 10.0.0.0/255.0.0.0
 854  * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
 855  *
 856  * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
 857  * For a don't care mask it gives us a 0
 858  *
 859  * The check if don't care and the mask adjustment if mask=0 is done for VLAN
 860  * and MAC stuff on an upper level (due to missing information on this level).
 861  * For these guys we can discard them if they are value=0 and mask=0.
 862  *
 863  * Further the all masks are one-padded for better hardware efficiency.
 864  */
 865 static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
 866                                struct filer_table *tab)
 867 {
 868         switch (flag) {
 869                 /* 3bit */
 870         case RQFCR_PID_PRI:
 871                 if (!(value | mask))
 872                         return;
 873                 mask |= RQFCR_PID_PRI_MASK;
 874                 break;
 875                 /* 8bit */
 876         case RQFCR_PID_L4P:
 877         case RQFCR_PID_TOS:
 878                 if (!~(mask | RQFCR_PID_L4P_MASK))
 879                         return;
 880                 if (!mask)
 881                         mask = ~0;
 882                 else
 883                         mask |= RQFCR_PID_L4P_MASK;
 884                 break;
 885                 /* 12bit */
 886         case RQFCR_PID_VID:
 887                 if (!(value | mask))
 888                         return;
 889                 mask |= RQFCR_PID_VID_MASK;
 890                 break;
 891                 /* 16bit */
 892         case RQFCR_PID_DPT:
 893         case RQFCR_PID_SPT:
 894         case RQFCR_PID_ETY:
 895                 if (!~(mask | RQFCR_PID_PORT_MASK))
 896                         return;
 897                 if (!mask)
 898                         mask = ~0;
 899                 else
 900                         mask |= RQFCR_PID_PORT_MASK;
 901                 break;
 902                 /* 24bit */
 903         case RQFCR_PID_DAH:
 904         case RQFCR_PID_DAL:
 905         case RQFCR_PID_SAH:
 906         case RQFCR_PID_SAL:
 907                 if (!(value | mask))
 908                         return;
 909                 mask |= RQFCR_PID_MAC_MASK;
 910                 break;
 911                 /* for all real 32bit masks */
 912         default:
 913                 if (!~mask)
 914                         return;
 915                 if (!mask)
 916                         mask = ~0;
 917                 break;
 918         }
 919         gfar_set_general_attribute(value, mask, flag, tab);
 920 }
 921
 922 /* Translates value and mask for UDP, TCP or SCTP */
 923 static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
 924                               struct ethtool_tcpip4_spec *mask,
 925                               struct filer_table *tab)
 926 {
 927         gfar_set_attribute(be32_to_cpu(value->ip4src),
 928                            be32_to_cpu(mask->ip4src),
 929                            RQFCR_PID_SIA, tab);
 930         gfar_set_attribute(be32_to_cpu(value->ip4dst),
 931                            be32_to_cpu(mask->ip4dst),
 932                            RQFCR_PID_DIA, tab);
 933         gfar_set_attribute(be16_to_cpu(value->pdst),
 934                            be16_to_cpu(mask->pdst),
 935                            RQFCR_PID_DPT, tab);
 936         gfar_set_attribute(be16_to_cpu(value->psrc),
 937                            be16_to_cpu(mask->psrc),
 938                            RQFCR_PID_SPT, tab);
 939         gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
 940 }
 941
 942 /* Translates value and mask for RAW-IP4 */
 943 static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
 944                              struct ethtool_usrip4_spec *mask,
 945                              struct filer_table *tab)
 946 {
 947         gfar_set_attribute(be32_to_cpu(value->ip4src),
 948                            be32_to_cpu(mask->ip4src),
 949                            RQFCR_PID_SIA, tab);
 950         gfar_set_attribute(be32_to_cpu(value->ip4dst),
 951                            be32_to_cpu(mask->ip4dst),
 952                            RQFCR_PID_DIA, tab);
 953         gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
 954         gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
 955         gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
 956                            be32_to_cpu(mask->l4_4_bytes),
 957                            RQFCR_PID_ARB, tab);
 958
 959 }
 960
 961 /* Translates value and mask for ETHER spec */
 962 static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
 963                            struct filer_table *tab)
 964 {
 965         u32 upper_temp_mask = 0;
 966         u32 lower_temp_mask = 0;
 967
 968         /* Source address */
 969         if (!is_broadcast_ether_addr(mask->h_source)) {
 970                 if (is_zero_ether_addr(mask->h_source)) {
 971                         upper_temp_mask = 0xFFFFFFFF;
 972                         lower_temp_mask = 0xFFFFFFFF;
 973                 } else {
 974                         upper_temp_mask = mask->h_source[0] << 16 |
 975                                           mask->h_source[1] << 8  |
 976                                           mask->h_source[2];
 977                         lower_temp_mask = mask->h_source[3] << 16 |
 978                                           mask->h_source[4] << 8  |
 979                                           mask->h_source[5];
 980                 }
 981                 /* Upper 24bit */
 982                 gfar_set_attribute(value->h_source[0] << 16 |
 983                                    value->h_source[1] << 8  |
 984                                    value->h_source[2],
 985                                    upper_temp_mask, RQFCR_PID_SAH, tab);
 986                 /* And the same for the lower part */
 987                 gfar_set_attribute(value->h_source[3] << 16 |
 988                                    value->h_source[4] << 8  |
 989                                    value->h_source[5],
 990                                    lower_temp_mask, RQFCR_PID_SAL, tab);
 991         }
 992         /* Destination address */
 993         if (!is_broadcast_ether_addr(mask->h_dest)) {
 994                 /* Special for destination is limited broadcast */
 995                 if ((is_broadcast_ether_addr(value->h_dest) &&
 996                     is_zero_ether_addr(mask->h_dest))) {
 997                         gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
 998                 } else {
 999                         if (is_zero_ether_addr(mask->h_dest)) {
1000                                 upper_temp_mask = 0xFFFFFFFF;
1001                                 lower_temp_mask = 0xFFFFFFFF;
1002                         } else {
1003                                 upper_temp_mask = mask->h_dest[0] << 16 |
1004                                                   mask->h_dest[1] << 8  |
1005                                                   mask->h_dest[2];
1006                                 lower_temp_mask = mask->h_dest[3] << 16 |
1007                                                   mask->h_dest[4] << 8  |
1008                                                   mask->h_dest[5];
1009                         }
1010
1011                         /* Upper 24bit */
1012                         gfar_set_attribute(value->h_dest[0] << 16 |
1013                                            value->h_dest[1] << 8  |
1014                                            value->h_dest[2],
1015                                            upper_temp_mask, RQFCR_PID_DAH, tab);
1016                         /* And the same for the lower part */
1017                         gfar_set_attribute(value->h_dest[3] << 16 |
1018                                            value->h_dest[4] << 8  |
1019                                            value->h_dest[5],
1020                                            lower_temp_mask, RQFCR_PID_DAL, tab);
1021                 }
1022         }
1023
1024         gfar_set_attribute(be16_to_cpu(value->h_proto),
1025                            be16_to_cpu(mask->h_proto),
1026                            RQFCR_PID_ETY, tab);
1027 }
1028
1029 static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1030 {
1031         return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1032 }
1033
1034 static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1035 {
1036         return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1037 }
1038
1039 static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1040 {
1041         return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1042 }
1043
1044 static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1045 {
1046         return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1047 }
1048
1049 static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1050 {
1051         return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1052                 VLAN_PRIO_SHIFT;
1053 }
1054
1055 static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1056 {
1057         return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1058                 VLAN_PRIO_SHIFT;
1059 }
1060
1061 /* Convert a rule to binary filter format of gianfar */
1062 static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1063                                  struct filer_table *tab)
1064 {
1065         u32 vlan = 0, vlan_mask = 0;
1066         u32 id = 0, id_mask = 0;
1067         u32 cfi = 0, cfi_mask = 0;
1068         u32 prio = 0, prio_mask = 0;
1069         u32 old_index = tab->index;
1070
1071         /* Check if vlan is wanted */
1072         if ((rule->flow_type & FLOW_EXT) &&
1073             (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1074                 if (!rule->m_ext.vlan_tci)
1075                         rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1076
1077                 vlan = RQFPR_VLN;
1078                 vlan_mask = RQFPR_VLN;
1079
1080                 /* Separate the fields */
1081                 id = vlan_tci_vid(rule);
1082                 id_mask = vlan_tci_vidm(rule);
1083                 cfi = vlan_tci_cfi(rule);
1084                 cfi_mask = vlan_tci_cfim(rule);
1085                 prio = vlan_tci_prio(rule);
1086                 prio_mask = vlan_tci_priom(rule);
1087
1088                 if (cfi_mask) {
1089                         if (cfi)
1090                                 vlan |= RQFPR_CFI;
1091                         vlan_mask |= RQFPR_CFI;
1092                 }
1093         }
1094
1095         switch (rule->flow_type & ~FLOW_EXT) {
1096         case TCP_V4_FLOW:
1097                 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1098                                     RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1099                 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1100                                   &rule->m_u.tcp_ip4_spec, tab);
1101                 break;
1102         case UDP_V4_FLOW:
1103                 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1104                                     RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1105                 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1106                                   &rule->m_u.udp_ip4_spec, tab);
1107                 break;
1108         case SCTP_V4_FLOW:
1109                 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1110                                     tab);
1111                 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1112                 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1113                                   (struct ethtool_tcpip4_spec *)&rule->m_u,
1114                                   tab);
1115                 break;
1116         case IP_USER_FLOW:
1117                 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1118                                     tab);
1119                 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1120                                  (struct ethtool_usrip4_spec *) &rule->m_u,
1121                                  tab);
1122                 break;
1123         case ETHER_FLOW:
1124                 if (vlan)
1125                         gfar_set_parse_bits(vlan, vlan_mask, tab);
1126                 gfar_set_ether((struct ethhdr *) &rule->h_u,
1127                                (struct ethhdr *) &rule->m_u, tab);
1128                 break;
1129         default:
1130                 return -1;
1131         }
1132
1133         /* Set the vlan attributes in the end */
1134         if (vlan) {
1135                 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1136                 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1137         }
1138
1139         /* If there has been nothing written till now, it must be a default */
1140         if (tab->index == old_index) {
1141                 gfar_set_mask(0xFFFFFFFF, tab);
1142                 tab->fe[tab->index].ctrl = 0x20;
1143                 tab->fe[tab->index].prop = 0x0;
1144                 tab->index++;
1145         }
1146
1147         /* Remove last AND */
1148         tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1149
1150         /* Specify which queue to use or to drop */
1151         if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1152                 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1153         else
1154                 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1155
1156         /* Only big enough entries can be clustered */
1157         if (tab->index > (old_index + 2)) {
1158                 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1159                 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1160         }
1161
1162         /* In rare cases the cache can be full while there is
1163          * free space in hw
1164          */
1165         if (tab->index > MAX_FILER_CACHE_IDX - 1)
1166                 return -EBUSY;
1167
1168         return 0;
1169 }
1170
1171 /* Write the bit-pattern from software's buffer to hardware registers */
1172 static int gfar_write_filer_table(struct gfar_private *priv,
1173                                   struct filer_table *tab)
1174 {
1175         u32 i = 0;
1176         if (tab->index > MAX_FILER_IDX - 1)
1177                 return -EBUSY;
1178
1179         /* Fill regular entries */
1180         for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
1181                 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1182         /* Fill the rest with fall-troughs */
1183         for (; i < MAX_FILER_IDX; i++)
1184                 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1185         /* Last entry must be default accept
1186          * because that's what people expect
1187          */
1188         gfar_write_filer(priv, i, 0x20, 0x0);
1189
1190         return 0;
1191 }
1192
1193 static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1194                                  struct gfar_private *priv)
1195 {
1196
1197         if (flow->flow_type & FLOW_EXT) {
1198                 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1199                         netdev_warn(priv->ndev,
1200                                     "User-specific data not supported!\n");
1201                 if (~flow->m_ext.vlan_etype)
1202                         netdev_warn(priv->ndev,
1203                                     "VLAN-etype not supported!\n");
1204         }
1205         if (flow->flow_type == IP_USER_FLOW)
1206                 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1207                         netdev_warn(priv->ndev,
1208                                     "IP-Version differing from IPv4 not supported!\n");
1209
1210         return 0;
1211 }
1212
1213 static int gfar_process_filer_changes(struct gfar_private *priv)
1214 {
1215         struct ethtool_flow_spec_container *j;
1216         struct filer_table *tab;
1217         s32 ret = 0;
1218
1219         /* So index is set to zero, too! */
1220         tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1221         if (tab == NULL)
1222                 return -ENOMEM;
1223
1224         /* Now convert the existing filer data from flow_spec into
1225          * filer tables binary format
1226          */
1227         list_for_each_entry(j, &priv->rx_list.list, list) {
1228                 ret = gfar_convert_to_filer(&j->fs, tab);
1229                 if (ret == -EBUSY) {
1230                         netdev_err(priv->ndev,
1231                                    "Rule not added: No free space!\n");
1232                         goto end;
1233                 }
1234                 if (ret == -1) {
1235                         netdev_err(priv->ndev,
1236                                    "Rule not added: Unsupported Flow-type!\n");
1237                         goto end;
1238                 }
1239         }
1240
1241         /* Write everything to hardware */
1242         ret = gfar_write_filer_table(priv, tab);
1243         if (ret == -EBUSY) {
1244                 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1245                 goto end;
1246         }
1247
1248 end:
1249         kfree(tab);
1250         return ret;
1251 }
1252
1253 static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1254 {
1255         u32 i = 0;
1256
1257         for (i = 0; i < sizeof(flow->m_u); i++)
1258                 flow->m_u.hdata[i] ^= 0xFF;
1259
1260         flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1261         flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1262         flow->m_ext.data[0] ^= cpu_to_be32(~0);
1263         flow->m_ext.data[1] ^= cpu_to_be32(~0);
1264 }
1265
1266 static int gfar_add_cls(struct gfar_private *priv,
1267                         struct ethtool_rx_flow_spec *flow)
1268 {
1269         struct ethtool_flow_spec_container *temp, *comp;
1270         int ret = 0;
1271
1272         temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1273         if (temp == NULL)
1274                 return -ENOMEM;
1275         memcpy(&temp->fs, flow, sizeof(temp->fs));
1276
1277         gfar_invert_masks(&temp->fs);
1278         ret = gfar_check_capability(&temp->fs, priv);
1279         if (ret)
1280                 goto clean_mem;
1281         /* Link in the new element at the right @location */
1282         if (list_empty(&priv->rx_list.list)) {
1283                 ret = gfar_check_filer_hardware(priv);
1284                 if (ret != 0)
1285                         goto clean_mem;
1286                 list_add(&temp->list, &priv->rx_list.list);
1287                 goto process;
1288         } else {
1289                 list_for_each_entry(comp, &priv->rx_list.list, list) {
1290                         if (comp->fs.location > flow->location) {
1291                                 list_add_tail(&temp->list, &comp->list);
1292                                 goto process;
1293                         }
1294                         if (comp->fs.location == flow->location) {
1295                                 netdev_err(priv->ndev,
1296                                            "Rule not added: ID %d not free!\n",
1297                                            flow->location);
1298                                 ret = -EBUSY;
1299                                 goto clean_mem;
1300                         }
1301                 }
1302                 list_add_tail(&temp->list, &priv->rx_list.list);
1303         }
1304
1305 process:
1306         priv->rx_list.count++;
1307         ret = gfar_process_filer_changes(priv);
1308         if (ret)
1309                 goto clean_list;
1310         return ret;
1311
1312 clean_list:
1313         priv->rx_list.count--;
1314         list_del(&temp->list);
1315 clean_mem:
1316         kfree(temp);
1317         return ret;
1318 }
1319
1320 static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1321 {
1322         struct ethtool_flow_spec_container *comp;
1323         u32 ret = -EINVAL;
1324
1325         if (list_empty(&priv->rx_list.list))
1326                 return ret;
1327
1328         list_for_each_entry(comp, &priv->rx_list.list, list) {
1329                 if (comp->fs.location == loc) {
1330                         list_del(&comp->list);
1331                         kfree(comp);
1332                         priv->rx_list.count--;
1333                         gfar_process_filer_changes(priv);
1334                         ret = 0;
1335                         break;
1336                 }
1337         }
1338
1339         return ret;
1340 }
1341
1342 static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1343 {
1344         struct ethtool_flow_spec_container *comp;
1345         u32 ret = -EINVAL;
1346
1347         list_for_each_entry(comp, &priv->rx_list.list, list) {
1348                 if (comp->fs.location == cmd->fs.location) {
1349                         memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1350                         gfar_invert_masks(&cmd->fs);
1351                         ret = 0;
1352                         break;
1353                 }
1354         }
1355
1356         return ret;
1357 }
1358
1359 static int gfar_get_cls_all(struct gfar_private *priv,
1360                             struct ethtool_rxnfc *cmd, u32 *rule_locs)
1361 {
1362         struct ethtool_flow_spec_container *comp;
1363         u32 i = 0;
1364
1365         list_for_each_entry(comp, &priv->rx_list.list, list) {
1366                 if (i == cmd->rule_cnt)
1367                         return -EMSGSIZE;
1368                 rule_locs[i] = comp->fs.location;
1369                 i++;
1370         }
1371
1372         cmd->data = MAX_FILER_IDX;
1373         cmd->rule_cnt = i;
1374
1375         return 0;
1376 }
1377
1378 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1379 {
1380         struct gfar_private *priv = netdev_priv(dev);
1381         int ret = 0;
1382
1383         if (test_bit(GFAR_RESETTING, &priv->state))
1384                 return -EBUSY;
1385
1386         mutex_lock(&priv->rx_queue_access);
1387
1388         switch (cmd->cmd) {
1389         case ETHTOOL_SRXFH:
1390                 ret = gfar_set_hash_opts(priv, cmd);
1391                 break;
1392         case ETHTOOL_SRXCLSRLINS:
1393                 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1394                      cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1395                     cmd->fs.location >= MAX_FILER_IDX) {
1396                         ret = -EINVAL;
1397                         break;
1398                 }
1399                 ret = gfar_add_cls(priv, &cmd->fs);
1400                 break;
1401         case ETHTOOL_SRXCLSRLDEL:
1402                 ret = gfar_del_cls(priv, cmd->fs.location);
1403                 break;
1404         default:
1405                 ret = -EINVAL;
1406         }
1407
1408         mutex_unlock(&priv->rx_queue_access);
1409
1410         return ret;
1411 }
1412
1413 static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1414                         u32 *rule_locs)
1415 {
1416         struct gfar_private *priv = netdev_priv(dev);
1417         int ret = 0;
1418
1419         switch (cmd->cmd) {
1420         case ETHTOOL_GRXRINGS:
1421                 cmd->data = priv->num_rx_queues;
1422                 break;
1423         case ETHTOOL_GRXCLSRLCNT:
1424                 cmd->rule_cnt = priv->rx_list.count;
1425                 break;
1426         case ETHTOOL_GRXCLSRULE:
1427                 ret = gfar_get_cls(priv, cmd);
1428                 break;
1429         case ETHTOOL_GRXCLSRLALL:
1430                 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1431                 break;
1432         default:
1433                 ret = -EINVAL;
1434                 break;
1435         }
1436
1437         return ret;
1438 }
1439
1440 static int gfar_get_ts_info(struct net_device *dev,
1441                             struct ethtool_ts_info *info)
1442 {
1443         struct gfar_private *priv = netdev_priv(dev);
1444         struct platform_device *ptp_dev;
1445         struct device_node *ptp_node;
1446         struct ptp_qoriq *ptp = NULL;
1447
1448         info->phc_index = -1;
1449
1450         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1451                 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1452                                         SOF_TIMESTAMPING_SOFTWARE;
1453                 return 0;
1454         }
1455
1456         ptp_node = of_find_compatible_node(NULL, NULL, "fsl,etsec-ptp");
1457         if (ptp_node) {
1458                 ptp_dev = of_find_device_by_node(ptp_node);
1459                 if (ptp_dev)
1460                         ptp = platform_get_drvdata(ptp_dev);
1461         }
1462
1463         if (ptp)
1464                 info->phc_index = ptp->phc_index;
1465
1466         info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1467                                 SOF_TIMESTAMPING_RX_HARDWARE |
1468                                 SOF_TIMESTAMPING_RAW_HARDWARE;
1469         info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1470                          (1 << HWTSTAMP_TX_ON);
1471         info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1472                            (1 << HWTSTAMP_FILTER_ALL);
1473         return 0;
1474 }
1475
1476 const struct ethtool_ops gfar_ethtool_ops = {
1477         .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1478                                      ETHTOOL_COALESCE_MAX_FRAMES,
1479         .get_drvinfo = gfar_gdrvinfo,
1480         .get_regs_len = gfar_reglen,
1481         .get_regs = gfar_get_regs,
1482         .get_link = ethtool_op_get_link,
1483         .get_coalesce = gfar_gcoalesce,
1484         .set_coalesce = gfar_scoalesce,
1485         .get_ringparam = gfar_gringparam,
1486         .set_ringparam = gfar_sringparam,
1487         .get_pauseparam = gfar_gpauseparam,
1488         .set_pauseparam = gfar_spauseparam,
1489         .get_strings = gfar_gstrings,
1490         .get_sset_count = gfar_sset_count,
1491         .get_ethtool_stats = gfar_fill_stats,
1492         .get_msglevel = gfar_get_msglevel,
1493         .set_msglevel = gfar_set_msglevel,
1494 #ifdef CONFIG_PM
1495         .get_wol = gfar_get_wol,
1496         .set_wol = gfar_set_wol,
1497 #endif
1498         .set_rxnfc = gfar_set_nfc,
1499         .get_rxnfc = gfar_get_nfc,
1500         .get_ts_info = gfar_get_ts_info,
1501         .get_link_ksettings = phy_ethtool_get_link_ksettings,
1502         .set_link_ksettings = phy_ethtool_set_link_ksettings,
1503 };