drivers/net/ethernet/freescale/gianfar_ethtool.c

   1 /*
   2  *  drivers/net/ethernet/freescale/gianfar_ethtool.c
   3  *
   4  *  Gianfar Ethernet Driver
   5  *  Ethtool support for Gianfar Enet
   6  *  Based on e1000 ethtool support
   7  *
   8  *  Author: Andy Fleming
   9  *  Maintainer: Kumar Gala
  10  *  Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
  11  *
  12  *  Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc.
  13  *
  14  *  This software may be used and distributed according to
  15  *  the terms of the GNU Public License, Version 2, incorporated herein
  16  *  by reference.
  17  */
  18
  19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  20
  21 #include <linux/kernel.h>
  22 #include <linux/string.h>
  23 #include <linux/errno.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/delay.h>
  26 #include <linux/netdevice.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/net_tstamp.h>
  29 #include <linux/skbuff.h>
  30 #include <linux/spinlock.h>
  31 #include <linux/mm.h>
  32
  33 #include <asm/io.h>
  34 #include <asm/irq.h>
  35 #include <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
  49 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
  50                             u64 *buf);
  51 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
  52 static int gfar_gcoalesce(struct net_device *dev,
  53                           struct ethtool_coalesce *cvals);
  54 static int gfar_scoalesce(struct net_device *dev,
  55                           struct ethtool_coalesce *cvals);
  56 static void gfar_gringparam(struct net_device *dev,
  57                             struct ethtool_ringparam *rvals);
  58 static int gfar_sringparam(struct net_device *dev,
  59                            struct ethtool_ringparam *rvals);
  60 static void gfar_gdrvinfo(struct net_device *dev,
  61                           struct ethtool_drvinfo *drvinfo);
  62
  63 static const char stat_gstrings[][ETH_GSTRING_LEN] = {
  64         /* 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 */
 127 static 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  */
 142 static 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
 161 static 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 */
 177 static 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 */
 188 static int gfar_reglen(struct net_device *dev)
 189 {
 190         return sizeof (struct gfar);
 191 }
 192
 193 /* Return a dump of the GFAR register space */
 194 static 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 */
 208 static 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 */
 235 static 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.  */
 263 static 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  */
 329 static 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 */
 417 static 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  */
 444 static 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
 488 static 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
 498 static 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
 568 int 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
 596 static 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
 603 static 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
 611 static 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
 631 static 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
 663 static 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
 738 static 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
 836 err:
 837         kfree(local_rqfcr);
 838         kfree(local_rqfpr);
 839         return ret;
 840 }
 841
 842 static 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
 852 static 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 */
 895 static 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) */
 903 static 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
 912 static 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  */
 935 static 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 */
 993 static 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 */
1013 static 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 */
1032 static 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
1099 static 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
1104 static 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
1109 static 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
1114 static 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
1119 static 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
1125 static 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 */
1132 static 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 */
1244 static 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
1265 static 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
1285 static 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
1320 end:
1321         kfree(tab);
1322         return ret;
1323 }
1324
1325 static 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
1338 static 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
1377 process:
1378         priv->rx_list.count++;
1379         ret = gfar_process_filer_changes(priv);
1380         if (ret)
1381                 goto clean_list;
1382         return ret;
1383
1384 clean_list:
1385         priv->rx_list.count--;
1386         list_del(&temp->list);
1387 clean_mem:
1388         kfree(temp);
1389         return ret;
1390 }
1391
1392 static 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
1414 static 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
1431 static 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
1450 static 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
1485 static 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
1512 int gfar_phc_index = -1;
1513 EXPORT_SYMBOL(gfar_phc_index);
1514
1515 static 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
1537 const 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 };