drivers/net/ethernet/freescale/gianfar_ethtool.c

   1 /*
   2  *  drivers/net/ethernet/freescale/gianfar_ethtool.c
   3  *
   4  *  Gianfar Ethernet Driver
   5  *  Ethtool support for Gianfar Enet
   6  *  Based on e1000 ethtool support
   7  *
   8  *  Author: Andy Fleming
   9  *  Maintainer: Kumar Gala
  10  *  Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
  11  *
  12  *  Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc.
  13  *
  14  *  This software may be used and distributed according to
  15  *  the terms of the GNU Public License, Version 2, incorporated herein
  16  *  by reference.
  17  */
  18
  19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  20
  21 #include <linux/kernel.h>
  22 #include <linux/string.h>
  23 #include <linux/errno.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/delay.h>
  26 #include <linux/netdevice.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/net_tstamp.h>
  29 #include <linux/skbuff.h>
  30 #include <linux/spinlock.h>
  31 #include <linux/mm.h>
  32
  33 #include <asm/io.h>
  34 #include <asm/irq.h>
  35 #include <asm/uaccess.h>
  36 #include <linux/module.h>
  37 #include <linux/crc32.h>
  38 #include <asm/types.h>
  39 #include <linux/ethtool.h>
  40 #include <linux/mii.h>
  41 #include <linux/phy.h>
  42 #include <linux/sort.h>
  43 #include <linux/if_vlan.h>
  44
  45 #include "gianfar.h"
  46
  47 #define GFAR_MAX_COAL_USECS 0xffff
  48 #define GFAR_MAX_COAL_FRAMES 0xff
  49 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
  50                             u64 *buf);
  51 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
  52 static int gfar_gcoalesce(struct net_device *dev,
  53                           struct ethtool_coalesce *cvals);
  54 static int gfar_scoalesce(struct net_device *dev,
  55                           struct ethtool_coalesce *cvals);
  56 static void gfar_gringparam(struct net_device *dev,
  57                             struct ethtool_ringparam *rvals);
  58 static int gfar_sringparam(struct net_device *dev,
  59                            struct ethtool_ringparam *rvals);
  60 static void gfar_gdrvinfo(struct net_device *dev,
  61                           struct ethtool_drvinfo *drvinfo);
  62
  63 static const char stat_gstrings[][ETH_GSTRING_LEN] = {
  64         /* 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         drvinfo->regdump_len = 0;
 186         drvinfo->eedump_len = 0;
 187 }
 188
 189
 190 static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
 191 {
 192         struct gfar_private *priv = netdev_priv(dev);
 193         struct phy_device *phydev = priv->phydev;
 194
 195         if (NULL == phydev)
 196                 return -ENODEV;
 197
 198         return phy_ethtool_sset(phydev, cmd);
 199 }
 200
 201
 202 /* Return the current settings in the ethtool_cmd structure */
 203 static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
 204 {
 205         struct gfar_private *priv = netdev_priv(dev);
 206         struct phy_device *phydev = priv->phydev;
 207         struct gfar_priv_rx_q *rx_queue = NULL;
 208         struct gfar_priv_tx_q *tx_queue = NULL;
 209
 210         if (NULL == phydev)
 211                 return -ENODEV;
 212         tx_queue = priv->tx_queue[0];
 213         rx_queue = priv->rx_queue[0];
 214
 215         /* etsec-1.7 and older versions have only one txic
 216          * and rxic regs although they support multiple queues */
 217         cmd->maxtxpkt = get_icft_value(tx_queue->txic);
 218         cmd->maxrxpkt = get_icft_value(rx_queue->rxic);
 219
 220         return phy_ethtool_gset(phydev, cmd);
 221 }
 222
 223 /* Return the length of the register structure */
 224 static int gfar_reglen(struct net_device *dev)
 225 {
 226         return sizeof (struct gfar);
 227 }
 228
 229 /* Return a dump of the GFAR register space */
 230 static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 231                           void *regbuf)
 232 {
 233         int i;
 234         struct gfar_private *priv = netdev_priv(dev);
 235         u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
 236         u32 *buf = (u32 *) regbuf;
 237
 238         for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
 239                 buf[i] = gfar_read(&theregs[i]);
 240 }
 241
 242 /* Convert microseconds to ethernet clock ticks, which changes
 243  * depending on what speed the controller is running at */
 244 static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
 245                                      unsigned int usecs)
 246 {
 247         unsigned int count;
 248
 249         /* The timer is different, depending on the interface speed */
 250         switch (priv->phydev->speed) {
 251         case SPEED_1000:
 252                 count = GFAR_GBIT_TIME;
 253                 break;
 254         case SPEED_100:
 255                 count = GFAR_100_TIME;
 256                 break;
 257         case SPEED_10:
 258         default:
 259                 count = GFAR_10_TIME;
 260                 break;
 261         }
 262
 263         /* Make sure we return a number greater than 0
 264          * if usecs > 0 */
 265         return (usecs * 1000 + count - 1) / count;
 266 }
 267
 268 /* Convert ethernet clock ticks to microseconds */
 269 static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
 270                                      unsigned int ticks)
 271 {
 272         unsigned int count;
 273
 274         /* The timer is different, depending on the interface speed */
 275         switch (priv->phydev->speed) {
 276         case SPEED_1000:
 277                 count = GFAR_GBIT_TIME;
 278                 break;
 279         case SPEED_100:
 280                 count = GFAR_100_TIME;
 281                 break;
 282         case SPEED_10:
 283         default:
 284                 count = GFAR_10_TIME;
 285                 break;
 286         }
 287
 288         /* Make sure we return a number greater than 0 */
 289         /* if ticks is > 0 */
 290         return (ticks * count) / 1000;
 291 }
 292
 293 /* Get the coalescing parameters, and put them in the cvals
 294  * structure.  */
 295 static int gfar_gcoalesce(struct net_device *dev,
 296                           struct ethtool_coalesce *cvals)
 297 {
 298         struct gfar_private *priv = netdev_priv(dev);
 299         struct gfar_priv_rx_q *rx_queue = NULL;
 300         struct gfar_priv_tx_q *tx_queue = NULL;
 301         unsigned long rxtime;
 302         unsigned long rxcount;
 303         unsigned long txtime;
 304         unsigned long txcount;
 305
 306         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 307                 return -EOPNOTSUPP;
 308
 309         if (NULL == priv->phydev)
 310                 return -ENODEV;
 311
 312         rx_queue = priv->rx_queue[0];
 313         tx_queue = priv->tx_queue[0];
 314
 315         rxtime  = get_ictt_value(rx_queue->rxic);
 316         rxcount = get_icft_value(rx_queue->rxic);
 317         txtime  = get_ictt_value(tx_queue->txic);
 318         txcount = get_icft_value(tx_queue->txic);
 319         cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
 320         cvals->rx_max_coalesced_frames = rxcount;
 321
 322         cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
 323         cvals->tx_max_coalesced_frames = txcount;
 324
 325         cvals->use_adaptive_rx_coalesce = 0;
 326         cvals->use_adaptive_tx_coalesce = 0;
 327
 328         cvals->pkt_rate_low = 0;
 329         cvals->rx_coalesce_usecs_low = 0;
 330         cvals->rx_max_coalesced_frames_low = 0;
 331         cvals->tx_coalesce_usecs_low = 0;
 332         cvals->tx_max_coalesced_frames_low = 0;
 333
 334         /* When the packet rate is below pkt_rate_high but above
 335          * pkt_rate_low (both measured in packets per second) the
 336          * normal {rx,tx}_* coalescing parameters are used.
 337          */
 338
 339         /* When the packet rate is (measured in packets per second)
 340          * is above pkt_rate_high, the {rx,tx}_*_high parameters are
 341          * used.
 342          */
 343         cvals->pkt_rate_high = 0;
 344         cvals->rx_coalesce_usecs_high = 0;
 345         cvals->rx_max_coalesced_frames_high = 0;
 346         cvals->tx_coalesce_usecs_high = 0;
 347         cvals->tx_max_coalesced_frames_high = 0;
 348
 349         /* How often to do adaptive coalescing packet rate sampling,
 350          * measured in seconds.  Must not be zero.
 351          */
 352         cvals->rate_sample_interval = 0;
 353
 354         return 0;
 355 }
 356
 357 /* Change the coalescing values.
 358  * Both cvals->*_usecs and cvals->*_frames have to be > 0
 359  * in order for coalescing to be active
 360  */
 361 static int gfar_scoalesce(struct net_device *dev,
 362                           struct ethtool_coalesce *cvals)
 363 {
 364         struct gfar_private *priv = netdev_priv(dev);
 365         int i, err = 0;
 366
 367         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 368                 return -EOPNOTSUPP;
 369
 370         if (NULL == priv->phydev)
 371                 return -ENODEV;
 372
 373         /* Check the bounds of the values */
 374         if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 375                 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
 376                             GFAR_MAX_COAL_USECS);
 377                 return -EINVAL;
 378         }
 379
 380         if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 381                 netdev_info(dev, "Coalescing is limited to %d frames\n",
 382                             GFAR_MAX_COAL_FRAMES);
 383                 return -EINVAL;
 384         }
 385
 386         /* Check the bounds of the values */
 387         if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 388                 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
 389                             GFAR_MAX_COAL_USECS);
 390                 return -EINVAL;
 391         }
 392
 393         if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 394                 netdev_info(dev, "Coalescing is limited to %d frames\n",
 395                             GFAR_MAX_COAL_FRAMES);
 396                 return -EINVAL;
 397         }
 398
 399         while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 400                 cpu_relax();
 401
 402         /* Set up rx coalescing */
 403         if ((cvals->rx_coalesce_usecs == 0) ||
 404             (cvals->rx_max_coalesced_frames == 0)) {
 405                 for (i = 0; i < priv->num_rx_queues; i++)
 406                         priv->rx_queue[i]->rxcoalescing = 0;
 407         } else {
 408                 for (i = 0; i < priv->num_rx_queues; i++)
 409                         priv->rx_queue[i]->rxcoalescing = 1;
 410         }
 411
 412         for (i = 0; i < priv->num_rx_queues; i++) {
 413                 priv->rx_queue[i]->rxic = mk_ic_value(
 414                         cvals->rx_max_coalesced_frames,
 415                         gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
 416         }
 417
 418         /* Set up tx coalescing */
 419         if ((cvals->tx_coalesce_usecs == 0) ||
 420             (cvals->tx_max_coalesced_frames == 0)) {
 421                 for (i = 0; i < priv->num_tx_queues; i++)
 422                         priv->tx_queue[i]->txcoalescing = 0;
 423         } else {
 424                 for (i = 0; i < priv->num_tx_queues; i++)
 425                         priv->tx_queue[i]->txcoalescing = 1;
 426         }
 427
 428         for (i = 0; i < priv->num_tx_queues; i++) {
 429                 priv->tx_queue[i]->txic = mk_ic_value(
 430                         cvals->tx_max_coalesced_frames,
 431                         gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
 432         }
 433
 434         if (dev->flags & IFF_UP) {
 435                 stop_gfar(dev);
 436                 err = startup_gfar(dev);
 437         } else {
 438                 gfar_mac_reset(priv);
 439         }
 440
 441         clear_bit_unlock(GFAR_RESETTING, &priv->state);
 442
 443         return err;
 444 }
 445
 446 /* Fills in rvals with the current ring parameters.  Currently,
 447  * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
 448  * jumbo are ignored by the driver */
 449 static void gfar_gringparam(struct net_device *dev,
 450                             struct ethtool_ringparam *rvals)
 451 {
 452         struct gfar_private *priv = netdev_priv(dev);
 453         struct gfar_priv_tx_q *tx_queue = NULL;
 454         struct gfar_priv_rx_q *rx_queue = NULL;
 455
 456         tx_queue = priv->tx_queue[0];
 457         rx_queue = priv->rx_queue[0];
 458
 459         rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
 460         rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
 461         rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
 462         rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
 463
 464         /* Values changeable by the user.  The valid values are
 465          * in the range 1 to the "*_max_pending" counterpart above.
 466          */
 467         rvals->rx_pending = rx_queue->rx_ring_size;
 468         rvals->rx_mini_pending = rx_queue->rx_ring_size;
 469         rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
 470         rvals->tx_pending = tx_queue->tx_ring_size;
 471 }
 472
 473 /* Change the current ring parameters, stopping the controller if
 474  * necessary so that we don't mess things up while we're in motion.
 475  */
 476 static int gfar_sringparam(struct net_device *dev,
 477                            struct ethtool_ringparam *rvals)
 478 {
 479         struct gfar_private *priv = netdev_priv(dev);
 480         int err = 0, i;
 481
 482         if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
 483                 return -EINVAL;
 484
 485         if (!is_power_of_2(rvals->rx_pending)) {
 486                 netdev_err(dev, "Ring sizes must be a power of 2\n");
 487                 return -EINVAL;
 488         }
 489
 490         if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
 491                 return -EINVAL;
 492
 493         if (!is_power_of_2(rvals->tx_pending)) {
 494                 netdev_err(dev, "Ring sizes must be a power of 2\n");
 495                 return -EINVAL;
 496         }
 497
 498         while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 499                 cpu_relax();
 500
 501         if (dev->flags & IFF_UP)
 502                 stop_gfar(dev);
 503
 504         /* Change the sizes */
 505         for (i = 0; i < priv->num_rx_queues; i++)
 506                 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
 507
 508         for (i = 0; i < priv->num_tx_queues; i++)
 509                 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
 510
 511         /* Rebuild the rings with the new size */
 512         if (dev->flags & IFF_UP)
 513                 err = startup_gfar(dev);
 514
 515         clear_bit_unlock(GFAR_RESETTING, &priv->state);
 516
 517         return err;
 518 }
 519
 520 static void gfar_gpauseparam(struct net_device *dev,
 521                              struct ethtool_pauseparam *epause)
 522 {
 523         struct gfar_private *priv = netdev_priv(dev);
 524
 525         epause->autoneg = !!priv->pause_aneg_en;
 526         epause->rx_pause = !!priv->rx_pause_en;
 527         epause->tx_pause = !!priv->tx_pause_en;
 528 }
 529
 530 static int gfar_spauseparam(struct net_device *dev,
 531                             struct ethtool_pauseparam *epause)
 532 {
 533         struct gfar_private *priv = netdev_priv(dev);
 534         struct phy_device *phydev = priv->phydev;
 535         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 536         u32 oldadv, newadv;
 537
 538         if (!phydev)
 539                 return -ENODEV;
 540
 541         if (!(phydev->supported & SUPPORTED_Pause) ||
 542             (!(phydev->supported & SUPPORTED_Asym_Pause) &&
 543              (epause->rx_pause != epause->tx_pause)))
 544                 return -EINVAL;
 545
 546         priv->rx_pause_en = priv->tx_pause_en = 0;
 547         if (epause->rx_pause) {
 548                 priv->rx_pause_en = 1;
 549
 550                 if (epause->tx_pause) {
 551                         priv->tx_pause_en = 1;
 552                         /* FLOW_CTRL_RX & TX */
 553                         newadv = ADVERTISED_Pause;
 554                 } else  /* FLOW_CTLR_RX */
 555                         newadv = ADVERTISED_Pause | ADVERTISED_Asym_Pause;
 556         } else if (epause->tx_pause) {
 557                 priv->tx_pause_en = 1;
 558                 /* FLOW_CTLR_TX */
 559                 newadv = ADVERTISED_Asym_Pause;
 560         } else
 561                 newadv = 0;
 562
 563         if (epause->autoneg)
 564                 priv->pause_aneg_en = 1;
 565         else
 566                 priv->pause_aneg_en = 0;
 567
 568         oldadv = phydev->advertising &
 569                 (ADVERTISED_Pause | ADVERTISED_Asym_Pause);
 570         if (oldadv != newadv) {
 571                 phydev->advertising &=
 572                         ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
 573                 phydev->advertising |= newadv;
 574                 if (phydev->autoneg)
 575                         /* inform link partner of our
 576                          * new flow ctrl settings
 577                          */
 578                         return phy_start_aneg(phydev);
 579
 580                 if (!epause->autoneg) {
 581                         u32 tempval;
 582                         tempval = gfar_read(&regs->maccfg1);
 583                         tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
 584
 585                         priv->tx_actual_en = 0;
 586                         if (priv->tx_pause_en) {
 587                                 priv->tx_actual_en = 1;
 588                                 tempval |= MACCFG1_TX_FLOW;
 589                         }
 590
 591                         if (priv->rx_pause_en)
 592                                 tempval |= MACCFG1_RX_FLOW;
 593                         gfar_write(&regs->maccfg1, tempval);
 594                 }
 595         }
 596
 597         return 0;
 598 }
 599
 600 int gfar_set_features(struct net_device *dev, netdev_features_t features)
 601 {
 602         netdev_features_t changed = dev->features ^ features;
 603         struct gfar_private *priv = netdev_priv(dev);
 604         int err = 0;
 605
 606         if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
 607                          NETIF_F_RXCSUM)))
 608                 return 0;
 609
 610         while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 611                 cpu_relax();
 612
 613         dev->features = features;
 614
 615         if (dev->flags & IFF_UP) {
 616                 /* Now we take down the rings to rebuild them */
 617                 stop_gfar(dev);
 618                 err = startup_gfar(dev);
 619         } else {
 620                 gfar_mac_reset(priv);
 621         }
 622
 623         clear_bit_unlock(GFAR_RESETTING, &priv->state);
 624
 625         return err;
 626 }
 627
 628 static uint32_t gfar_get_msglevel(struct net_device *dev)
 629 {
 630         struct gfar_private *priv = netdev_priv(dev);
 631
 632         return priv->msg_enable;
 633 }
 634
 635 static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
 636 {
 637         struct gfar_private *priv = netdev_priv(dev);
 638
 639         priv->msg_enable = data;
 640 }
 641
 642 #ifdef CONFIG_PM
 643 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 644 {
 645         struct gfar_private *priv = netdev_priv(dev);
 646
 647         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) {
 648                 wol->supported = WAKE_MAGIC;
 649                 wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0;
 650         } else {
 651                 wol->supported = wol->wolopts = 0;
 652         }
 653 }
 654
 655 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 656 {
 657         struct gfar_private *priv = netdev_priv(dev);
 658
 659         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
 660             wol->wolopts != 0)
 661                 return -EINVAL;
 662
 663         if (wol->wolopts & ~WAKE_MAGIC)
 664                 return -EINVAL;
 665
 666         device_set_wakeup_enable(&dev->dev, wol->wolopts & WAKE_MAGIC);
 667
 668         priv->wol_en = !!device_may_wakeup(&dev->dev);
 669
 670         return 0;
 671 }
 672 #endif
 673
 674 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
 675 {
 676         u32 fcr = 0x0, fpr = FPR_FILER_MASK;
 677
 678         if (ethflow & RXH_L2DA) {
 679                 fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH |
 680                       RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 681                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 682                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 683                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 684                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 685
 686                 fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
 687                       RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 688                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 689                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 690                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 691                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 692         }
 693
 694         if (ethflow & RXH_VLAN) {
 695                 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 696                       RQFCR_AND | RQFCR_HASHTBL_0;
 697                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 698                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 699                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 700                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 701         }
 702
 703         if (ethflow & RXH_IP_SRC) {
 704                 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 705                       RQFCR_AND | RQFCR_HASHTBL_0;
 706                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 707                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 708                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 709                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 710         }
 711
 712         if (ethflow & (RXH_IP_DST)) {
 713                 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 714                       RQFCR_AND | RQFCR_HASHTBL_0;
 715                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 716                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 717                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 718                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 719         }
 720
 721         if (ethflow & RXH_L3_PROTO) {
 722                 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 723                       RQFCR_AND | RQFCR_HASHTBL_0;
 724                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 725                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 726                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 727                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 728         }
 729
 730         if (ethflow & RXH_L4_B_0_1) {
 731                 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 732                       RQFCR_AND | RQFCR_HASHTBL_0;
 733                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 734                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 735                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 736                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 737         }
 738
 739         if (ethflow & RXH_L4_B_2_3) {
 740                 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 741                       RQFCR_AND | RQFCR_HASHTBL_0;
 742                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 743                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 744                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 745                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 746         }
 747 }
 748
 749 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
 750                                        u64 class)
 751 {
 752         unsigned int last_rule_idx = priv->cur_filer_idx;
 753         unsigned int cmp_rqfpr;
 754         unsigned int *local_rqfpr;
 755         unsigned int *local_rqfcr;
 756         int i = 0x0, k = 0x0;
 757         int j = MAX_FILER_IDX, l = 0x0;
 758         int ret = 1;
 759
 760         local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 761                                     GFP_KERNEL);
 762         local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 763                                     GFP_KERNEL);
 764         if (!local_rqfpr || !local_rqfcr) {
 765                 ret = 0;
 766                 goto err;
 767         }
 768
 769         switch (class) {
 770         case TCP_V4_FLOW:
 771                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
 772                 break;
 773         case UDP_V4_FLOW:
 774                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
 775                 break;
 776         case TCP_V6_FLOW:
 777                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
 778                 break;
 779         case UDP_V6_FLOW:
 780                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
 781                 break;
 782         default:
 783                 netdev_err(priv->ndev,
 784                            "Right now this class is not supported\n");
 785                 ret = 0;
 786                 goto err;
 787         }
 788
 789         for (i = 0; i < MAX_FILER_IDX + 1; i++) {
 790                 local_rqfpr[j] = priv->ftp_rqfpr[i];
 791                 local_rqfcr[j] = priv->ftp_rqfcr[i];
 792                 j--;
 793                 if ((priv->ftp_rqfcr[i] ==
 794                      (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
 795                     (priv->ftp_rqfpr[i] == cmp_rqfpr))
 796                         break;
 797         }
 798
 799         if (i == MAX_FILER_IDX + 1) {
 800                 netdev_err(priv->ndev,
 801                            "No parse rule found, can't create hash rules\n");
 802                 ret = 0;
 803                 goto err;
 804         }
 805
 806         /* If a match was found, then it begins the starting of a cluster rule
 807          * if it was already programmed, we need to overwrite these rules
 808          */
 809         for (l = i+1; l < MAX_FILER_IDX; l++) {
 810                 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 811                     !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
 812                         priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
 813                                              RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
 814                         priv->ftp_rqfpr[l] = FPR_FILER_MASK;
 815                         gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
 816                                          priv->ftp_rqfpr[l]);
 817                         break;
 818                 }
 819
 820                 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 821                         (priv->ftp_rqfcr[l] & RQFCR_AND))
 822                         continue;
 823                 else {
 824                         local_rqfpr[j] = priv->ftp_rqfpr[l];
 825                         local_rqfcr[j] = priv->ftp_rqfcr[l];
 826                         j--;
 827                 }
 828         }
 829
 830         priv->cur_filer_idx = l - 1;
 831         last_rule_idx = l;
 832
 833         /* hash rules */
 834         ethflow_to_filer_rules(priv, ethflow);
 835
 836         /* Write back the popped out rules again */
 837         for (k = j+1; k < MAX_FILER_IDX; k++) {
 838                 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
 839                 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
 840                 gfar_write_filer(priv, priv->cur_filer_idx,
 841                                  local_rqfcr[k], local_rqfpr[k]);
 842                 if (!priv->cur_filer_idx)
 843                         break;
 844                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 845         }
 846
 847 err:
 848         kfree(local_rqfcr);
 849         kfree(local_rqfpr);
 850         return ret;
 851 }
 852
 853 static int gfar_set_hash_opts(struct gfar_private *priv,
 854                               struct ethtool_rxnfc *cmd)
 855 {
 856         /* write the filer rules here */
 857         if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
 858                 return -EINVAL;
 859
 860         return 0;
 861 }
 862
 863 static int gfar_check_filer_hardware(struct gfar_private *priv)
 864 {
 865         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 866         u32 i;
 867
 868         /* Check if we are in FIFO mode */
 869         i = gfar_read(&regs->ecntrl);
 870         i &= ECNTRL_FIFM;
 871         if (i == ECNTRL_FIFM) {
 872                 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
 873                 i = gfar_read(&regs->rctrl);
 874                 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
 875                 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
 876                         netdev_info(priv->ndev,
 877                                     "Receive Queue Filtering enabled\n");
 878                 } else {
 879                         netdev_warn(priv->ndev,
 880                                     "Receive Queue Filtering disabled\n");
 881                         return -EOPNOTSUPP;
 882                 }
 883         }
 884         /* Or in standard mode */
 885         else {
 886                 i = gfar_read(&regs->rctrl);
 887                 i &= RCTRL_PRSDEP_MASK;
 888                 if (i == RCTRL_PRSDEP_MASK) {
 889                         netdev_info(priv->ndev,
 890                                     "Receive Queue Filtering enabled\n");
 891                 } else {
 892                         netdev_warn(priv->ndev,
 893                                     "Receive Queue Filtering disabled\n");
 894                         return -EOPNOTSUPP;
 895                 }
 896         }
 897
 898         /* Sets the properties for arbitrary filer rule
 899          * to the first 4 Layer 4 Bytes
 900          */
 901         gfar_write(&regs->rbifx, 0xC0C1C2C3);
 902         return 0;
 903 }
 904
 905 /* Write a mask to filer cache */
 906 static void gfar_set_mask(u32 mask, struct filer_table *tab)
 907 {
 908         tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
 909         tab->fe[tab->index].prop = mask;
 910         tab->index++;
 911 }
 912
 913 /* Sets parse bits (e.g. IP or TCP) */
 914 static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
 915 {
 916         gfar_set_mask(mask, tab);
 917         tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
 918                                    RQFCR_AND;
 919         tab->fe[tab->index].prop = value;
 920         tab->index++;
 921 }
 922
 923 static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
 924                                        struct filer_table *tab)
 925 {
 926         gfar_set_mask(mask, tab);
 927         tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
 928         tab->fe[tab->index].prop = value;
 929         tab->index++;
 930 }
 931
 932 /* For setting a tuple of value and mask of type flag
 933  * Example:
 934  * IP-Src = 10.0.0.0/255.0.0.0
 935  * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
 936  *
 937  * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
 938  * For a don't care mask it gives us a 0
 939  *
 940  * The check if don't care and the mask adjustment if mask=0 is done for VLAN
 941  * and MAC stuff on an upper level (due to missing information on this level).
 942  * For these guys we can discard them if they are value=0 and mask=0.
 943  *
 944  * Further the all masks are one-padded for better hardware efficiency.
 945  */
 946 static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
 947                                struct filer_table *tab)
 948 {
 949         switch (flag) {
 950                 /* 3bit */
 951         case RQFCR_PID_PRI:
 952                 if (!(value | mask))
 953                         return;
 954                 mask |= RQFCR_PID_PRI_MASK;
 955                 break;
 956                 /* 8bit */
 957         case RQFCR_PID_L4P:
 958         case RQFCR_PID_TOS:
 959                 if (!~(mask | RQFCR_PID_L4P_MASK))
 960                         return;
 961                 if (!mask)
 962                         mask = ~0;
 963                 else
 964                         mask |= RQFCR_PID_L4P_MASK;
 965                 break;
 966                 /* 12bit */
 967         case RQFCR_PID_VID:
 968                 if (!(value | mask))
 969                         return;
 970                 mask |= RQFCR_PID_VID_MASK;
 971                 break;
 972                 /* 16bit */
 973         case RQFCR_PID_DPT:
 974         case RQFCR_PID_SPT:
 975         case RQFCR_PID_ETY:
 976                 if (!~(mask | RQFCR_PID_PORT_MASK))
 977                         return;
 978                 if (!mask)
 979                         mask = ~0;
 980                 else
 981                         mask |= RQFCR_PID_PORT_MASK;
 982                 break;
 983                 /* 24bit */
 984         case RQFCR_PID_DAH:
 985         case RQFCR_PID_DAL:
 986         case RQFCR_PID_SAH:
 987         case RQFCR_PID_SAL:
 988                 if (!(value | mask))
 989                         return;
 990                 mask |= RQFCR_PID_MAC_MASK;
 991                 break;
 992                 /* for all real 32bit masks */
 993         default:
 994                 if (!~mask)
 995                         return;
 996                 if (!mask)
 997                         mask = ~0;
 998                 break;
 999         }
1000         gfar_set_general_attribute(value, mask, flag, tab);
1001 }
1002
1003 /* Translates value and mask for UDP, TCP or SCTP */
1004 static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
1005                               struct ethtool_tcpip4_spec *mask,
1006                               struct filer_table *tab)
1007 {
1008         gfar_set_attribute(be32_to_cpu(value->ip4src),
1009                            be32_to_cpu(mask->ip4src),
1010                            RQFCR_PID_SIA, tab);
1011         gfar_set_attribute(be32_to_cpu(value->ip4dst),
1012                            be32_to_cpu(mask->ip4dst),
1013                            RQFCR_PID_DIA, tab);
1014         gfar_set_attribute(be16_to_cpu(value->pdst),
1015                            be16_to_cpu(mask->pdst),
1016                            RQFCR_PID_DPT, tab);
1017         gfar_set_attribute(be16_to_cpu(value->psrc),
1018                            be16_to_cpu(mask->psrc),
1019                            RQFCR_PID_SPT, tab);
1020         gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1021 }
1022
1023 /* Translates value and mask for RAW-IP4 */
1024 static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
1025                              struct ethtool_usrip4_spec *mask,
1026                              struct filer_table *tab)
1027 {
1028         gfar_set_attribute(be32_to_cpu(value->ip4src),
1029                            be32_to_cpu(mask->ip4src),
1030                            RQFCR_PID_SIA, tab);
1031         gfar_set_attribute(be32_to_cpu(value->ip4dst),
1032                            be32_to_cpu(mask->ip4dst),
1033                            RQFCR_PID_DIA, tab);
1034         gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1035         gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
1036         gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
1037                            be32_to_cpu(mask->l4_4_bytes),
1038                            RQFCR_PID_ARB, tab);
1039
1040 }
1041
1042 /* Translates value and mask for ETHER spec */
1043 static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
1044                            struct filer_table *tab)
1045 {
1046         u32 upper_temp_mask = 0;
1047         u32 lower_temp_mask = 0;
1048
1049         /* Source address */
1050         if (!is_broadcast_ether_addr(mask->h_source)) {
1051                 if (is_zero_ether_addr(mask->h_source)) {
1052                         upper_temp_mask = 0xFFFFFFFF;
1053                         lower_temp_mask = 0xFFFFFFFF;
1054                 } else {
1055                         upper_temp_mask = mask->h_source[0] << 16 |
1056                                           mask->h_source[1] << 8  |
1057                                           mask->h_source[2];
1058                         lower_temp_mask = mask->h_source[3] << 16 |
1059                                           mask->h_source[4] << 8  |
1060                                           mask->h_source[5];
1061                 }
1062                 /* Upper 24bit */
1063                 gfar_set_attribute(value->h_source[0] << 16 |
1064                                    value->h_source[1] << 8  |
1065                                    value->h_source[2],
1066                                    upper_temp_mask, RQFCR_PID_SAH, tab);
1067                 /* And the same for the lower part */
1068                 gfar_set_attribute(value->h_source[3] << 16 |
1069                                    value->h_source[4] << 8  |
1070                                    value->h_source[5],
1071                                    lower_temp_mask, RQFCR_PID_SAL, tab);
1072         }
1073         /* Destination address */
1074         if (!is_broadcast_ether_addr(mask->h_dest)) {
1075                 /* Special for destination is limited broadcast */
1076                 if ((is_broadcast_ether_addr(value->h_dest) &&
1077                     is_zero_ether_addr(mask->h_dest))) {
1078                         gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1079                 } else {
1080                         if (is_zero_ether_addr(mask->h_dest)) {
1081                                 upper_temp_mask = 0xFFFFFFFF;
1082                                 lower_temp_mask = 0xFFFFFFFF;
1083                         } else {
1084                                 upper_temp_mask = mask->h_dest[0] << 16 |
1085                                                   mask->h_dest[1] << 8  |
1086                                                   mask->h_dest[2];
1087                                 lower_temp_mask = mask->h_dest[3] << 16 |
1088                                                   mask->h_dest[4] << 8  |
1089                                                   mask->h_dest[5];
1090                         }
1091
1092                         /* Upper 24bit */
1093                         gfar_set_attribute(value->h_dest[0] << 16 |
1094                                            value->h_dest[1] << 8  |
1095                                            value->h_dest[2],
1096                                            upper_temp_mask, RQFCR_PID_DAH, tab);
1097                         /* And the same for the lower part */
1098                         gfar_set_attribute(value->h_dest[3] << 16 |
1099                                            value->h_dest[4] << 8  |
1100                                            value->h_dest[5],
1101                                            lower_temp_mask, RQFCR_PID_DAL, tab);
1102                 }
1103         }
1104
1105         gfar_set_attribute(be16_to_cpu(value->h_proto),
1106                            be16_to_cpu(mask->h_proto),
1107                            RQFCR_PID_ETY, tab);
1108 }
1109
1110 static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1111 {
1112         return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1113 }
1114
1115 static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1116 {
1117         return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1118 }
1119
1120 static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1121 {
1122         return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1123 }
1124
1125 static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1126 {
1127         return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1128 }
1129
1130 static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1131 {
1132         return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1133                 VLAN_PRIO_SHIFT;
1134 }
1135
1136 static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1137 {
1138         return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1139                 VLAN_PRIO_SHIFT;
1140 }
1141
1142 /* Convert a rule to binary filter format of gianfar */
1143 static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1144                                  struct filer_table *tab)
1145 {
1146         u32 vlan = 0, vlan_mask = 0;
1147         u32 id = 0, id_mask = 0;
1148         u32 cfi = 0, cfi_mask = 0;
1149         u32 prio = 0, prio_mask = 0;
1150         u32 old_index = tab->index;
1151
1152         /* Check if vlan is wanted */
1153         if ((rule->flow_type & FLOW_EXT) &&
1154             (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1155                 if (!rule->m_ext.vlan_tci)
1156                         rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1157
1158                 vlan = RQFPR_VLN;
1159                 vlan_mask = RQFPR_VLN;
1160
1161                 /* Separate the fields */
1162                 id = vlan_tci_vid(rule);
1163                 id_mask = vlan_tci_vidm(rule);
1164                 cfi = vlan_tci_cfi(rule);
1165                 cfi_mask = vlan_tci_cfim(rule);
1166                 prio = vlan_tci_prio(rule);
1167                 prio_mask = vlan_tci_priom(rule);
1168
1169                 if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
1170                         vlan |= RQFPR_CFI;
1171                         vlan_mask |= RQFPR_CFI;
1172                 } else if (cfi != VLAN_TAG_PRESENT &&
1173                            cfi_mask == VLAN_TAG_PRESENT) {
1174                         vlan_mask |= RQFPR_CFI;
1175                 }
1176         }
1177
1178         switch (rule->flow_type & ~FLOW_EXT) {
1179         case TCP_V4_FLOW:
1180                 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1181                                     RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1182                 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1183                                   &rule->m_u.tcp_ip4_spec, tab);
1184                 break;
1185         case UDP_V4_FLOW:
1186                 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1187                                     RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1188                 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1189                                   &rule->m_u.udp_ip4_spec, tab);
1190                 break;
1191         case SCTP_V4_FLOW:
1192                 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1193                                     tab);
1194                 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1195                 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1196                                   (struct ethtool_tcpip4_spec *)&rule->m_u,
1197                                   tab);
1198                 break;
1199         case IP_USER_FLOW:
1200                 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1201                                     tab);
1202                 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1203                                  (struct ethtool_usrip4_spec *) &rule->m_u,
1204                                  tab);
1205                 break;
1206         case ETHER_FLOW:
1207                 if (vlan)
1208                         gfar_set_parse_bits(vlan, vlan_mask, tab);
1209                 gfar_set_ether((struct ethhdr *) &rule->h_u,
1210                                (struct ethhdr *) &rule->m_u, tab);
1211                 break;
1212         default:
1213                 return -1;
1214         }
1215
1216         /* Set the vlan attributes in the end */
1217         if (vlan) {
1218                 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1219                 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1220         }
1221
1222         /* If there has been nothing written till now, it must be a default */
1223         if (tab->index == old_index) {
1224                 gfar_set_mask(0xFFFFFFFF, tab);
1225                 tab->fe[tab->index].ctrl = 0x20;
1226                 tab->fe[tab->index].prop = 0x0;
1227                 tab->index++;
1228         }
1229
1230         /* Remove last AND */
1231         tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1232
1233         /* Specify which queue to use or to drop */
1234         if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1235                 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1236         else
1237                 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1238
1239         /* Only big enough entries can be clustered */
1240         if (tab->index > (old_index + 2)) {
1241                 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1242                 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1243         }
1244
1245         /* In rare cases the cache can be full while there is
1246          * free space in hw
1247          */
1248         if (tab->index > MAX_FILER_CACHE_IDX - 1)
1249                 return -EBUSY;
1250
1251         return 0;
1252 }
1253
1254 /* Write the bit-pattern from software's buffer to hardware registers */
1255 static int gfar_write_filer_table(struct gfar_private *priv,
1256                                   struct filer_table *tab)
1257 {
1258         u32 i = 0;
1259         if (tab->index > MAX_FILER_IDX - 1)
1260                 return -EBUSY;
1261
1262         /* Fill regular entries */
1263         for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
1264                 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1265         /* Fill the rest with fall-troughs */
1266         for (; i < MAX_FILER_IDX; i++)
1267                 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1268         /* Last entry must be default accept
1269          * because that's what people expect
1270          */
1271         gfar_write_filer(priv, i, 0x20, 0x0);
1272
1273         return 0;
1274 }
1275
1276 static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1277                                  struct gfar_private *priv)
1278 {
1279
1280         if (flow->flow_type & FLOW_EXT) {
1281                 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1282                         netdev_warn(priv->ndev,
1283                                     "User-specific data not supported!\n");
1284                 if (~flow->m_ext.vlan_etype)
1285                         netdev_warn(priv->ndev,
1286                                     "VLAN-etype not supported!\n");
1287         }
1288         if (flow->flow_type == IP_USER_FLOW)
1289                 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1290                         netdev_warn(priv->ndev,
1291                                     "IP-Version differing from IPv4 not supported!\n");
1292
1293         return 0;
1294 }
1295
1296 static int gfar_process_filer_changes(struct gfar_private *priv)
1297 {
1298         struct ethtool_flow_spec_container *j;
1299         struct filer_table *tab;
1300         s32 ret = 0;
1301
1302         /* So index is set to zero, too! */
1303         tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1304         if (tab == NULL)
1305                 return -ENOMEM;
1306
1307         /* Now convert the existing filer data from flow_spec into
1308          * filer tables binary format
1309          */
1310         list_for_each_entry(j, &priv->rx_list.list, list) {
1311                 ret = gfar_convert_to_filer(&j->fs, tab);
1312                 if (ret == -EBUSY) {
1313                         netdev_err(priv->ndev,
1314                                    "Rule not added: No free space!\n");
1315                         goto end;
1316                 }
1317                 if (ret == -1) {
1318                         netdev_err(priv->ndev,
1319                                    "Rule not added: Unsupported Flow-type!\n");
1320                         goto end;
1321                 }
1322         }
1323
1324         /* Write everything to hardware */
1325         ret = gfar_write_filer_table(priv, tab);
1326         if (ret == -EBUSY) {
1327                 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1328                 goto end;
1329         }
1330
1331 end:
1332         kfree(tab);
1333         return ret;
1334 }
1335
1336 static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1337 {
1338         u32 i = 0;
1339
1340         for (i = 0; i < sizeof(flow->m_u); i++)
1341                 flow->m_u.hdata[i] ^= 0xFF;
1342
1343         flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1344         flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1345         flow->m_ext.data[0] ^= cpu_to_be32(~0);
1346         flow->m_ext.data[1] ^= cpu_to_be32(~0);
1347 }
1348
1349 static int gfar_add_cls(struct gfar_private *priv,
1350                         struct ethtool_rx_flow_spec *flow)
1351 {
1352         struct ethtool_flow_spec_container *temp, *comp;
1353         int ret = 0;
1354
1355         temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1356         if (temp == NULL)
1357                 return -ENOMEM;
1358         memcpy(&temp->fs, flow, sizeof(temp->fs));
1359
1360         gfar_invert_masks(&temp->fs);
1361         ret = gfar_check_capability(&temp->fs, priv);
1362         if (ret)
1363                 goto clean_mem;
1364         /* Link in the new element at the right @location */
1365         if (list_empty(&priv->rx_list.list)) {
1366                 ret = gfar_check_filer_hardware(priv);
1367                 if (ret != 0)
1368                         goto clean_mem;
1369                 list_add(&temp->list, &priv->rx_list.list);
1370                 goto process;
1371         } else {
1372                 list_for_each_entry(comp, &priv->rx_list.list, list) {
1373                         if (comp->fs.location > flow->location) {
1374                                 list_add_tail(&temp->list, &comp->list);
1375                                 goto process;
1376                         }
1377                         if (comp->fs.location == flow->location) {
1378                                 netdev_err(priv->ndev,
1379                                            "Rule not added: ID %d not free!\n",
1380                                            flow->location);
1381                                 ret = -EBUSY;
1382                                 goto clean_mem;
1383                         }
1384                 }
1385                 list_add_tail(&temp->list, &priv->rx_list.list);
1386         }
1387
1388 process:
1389         priv->rx_list.count++;
1390         ret = gfar_process_filer_changes(priv);
1391         if (ret)
1392                 goto clean_list;
1393         return ret;
1394
1395 clean_list:
1396         priv->rx_list.count--;
1397         list_del(&temp->list);
1398 clean_mem:
1399         kfree(temp);
1400         return ret;
1401 }
1402
1403 static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1404 {
1405         struct ethtool_flow_spec_container *comp;
1406         u32 ret = -EINVAL;
1407
1408         if (list_empty(&priv->rx_list.list))
1409                 return ret;
1410
1411         list_for_each_entry(comp, &priv->rx_list.list, list) {
1412                 if (comp->fs.location == loc) {
1413                         list_del(&comp->list);
1414                         kfree(comp);
1415                         priv->rx_list.count--;
1416                         gfar_process_filer_changes(priv);
1417                         ret = 0;
1418                         break;
1419                 }
1420         }
1421
1422         return ret;
1423 }
1424
1425 static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1426 {
1427         struct ethtool_flow_spec_container *comp;
1428         u32 ret = -EINVAL;
1429
1430         list_for_each_entry(comp, &priv->rx_list.list, list) {
1431                 if (comp->fs.location == cmd->fs.location) {
1432                         memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1433                         gfar_invert_masks(&cmd->fs);
1434                         ret = 0;
1435                         break;
1436                 }
1437         }
1438
1439         return ret;
1440 }
1441
1442 static int gfar_get_cls_all(struct gfar_private *priv,
1443                             struct ethtool_rxnfc *cmd, u32 *rule_locs)
1444 {
1445         struct ethtool_flow_spec_container *comp;
1446         u32 i = 0;
1447
1448         list_for_each_entry(comp, &priv->rx_list.list, list) {
1449                 if (i == cmd->rule_cnt)
1450                         return -EMSGSIZE;
1451                 rule_locs[i] = comp->fs.location;
1452                 i++;
1453         }
1454
1455         cmd->data = MAX_FILER_IDX;
1456         cmd->rule_cnt = i;
1457
1458         return 0;
1459 }
1460
1461 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1462 {
1463         struct gfar_private *priv = netdev_priv(dev);
1464         int ret = 0;
1465
1466         if (test_bit(GFAR_RESETTING, &priv->state))
1467                 return -EBUSY;
1468
1469         mutex_lock(&priv->rx_queue_access);
1470
1471         switch (cmd->cmd) {
1472         case ETHTOOL_SRXFH:
1473                 ret = gfar_set_hash_opts(priv, cmd);
1474                 break;
1475         case ETHTOOL_SRXCLSRLINS:
1476                 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1477                      cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1478                     cmd->fs.location >= MAX_FILER_IDX) {
1479                         ret = -EINVAL;
1480                         break;
1481                 }
1482                 ret = gfar_add_cls(priv, &cmd->fs);
1483                 break;
1484         case ETHTOOL_SRXCLSRLDEL:
1485                 ret = gfar_del_cls(priv, cmd->fs.location);
1486                 break;
1487         default:
1488                 ret = -EINVAL;
1489         }
1490
1491         mutex_unlock(&priv->rx_queue_access);
1492
1493         return ret;
1494 }
1495
1496 static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1497                         u32 *rule_locs)
1498 {
1499         struct gfar_private *priv = netdev_priv(dev);
1500         int ret = 0;
1501
1502         switch (cmd->cmd) {
1503         case ETHTOOL_GRXRINGS:
1504                 cmd->data = priv->num_rx_queues;
1505                 break;
1506         case ETHTOOL_GRXCLSRLCNT:
1507                 cmd->rule_cnt = priv->rx_list.count;
1508                 break;
1509         case ETHTOOL_GRXCLSRULE:
1510                 ret = gfar_get_cls(priv, cmd);
1511                 break;
1512         case ETHTOOL_GRXCLSRLALL:
1513                 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1514                 break;
1515         default:
1516                 ret = -EINVAL;
1517                 break;
1518         }
1519
1520         return ret;
1521 }
1522
1523 int gfar_phc_index = -1;
1524 EXPORT_SYMBOL(gfar_phc_index);
1525
1526 static int gfar_get_ts_info(struct net_device *dev,
1527                             struct ethtool_ts_info *info)
1528 {
1529         struct gfar_private *priv = netdev_priv(dev);
1530
1531         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1532                 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1533                                         SOF_TIMESTAMPING_SOFTWARE;
1534                 info->phc_index = -1;
1535                 return 0;
1536         }
1537         info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1538                                 SOF_TIMESTAMPING_RX_HARDWARE |
1539                                 SOF_TIMESTAMPING_RAW_HARDWARE;
1540         info->phc_index = gfar_phc_index;
1541         info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1542                          (1 << HWTSTAMP_TX_ON);
1543         info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1544                            (1 << HWTSTAMP_FILTER_ALL);
1545         return 0;
1546 }
1547
1548 const struct ethtool_ops gfar_ethtool_ops = {
1549         .get_settings = gfar_gsettings,
1550         .set_settings = gfar_ssettings,
1551         .get_drvinfo = gfar_gdrvinfo,
1552         .get_regs_len = gfar_reglen,
1553         .get_regs = gfar_get_regs,
1554         .get_link = ethtool_op_get_link,
1555         .get_coalesce = gfar_gcoalesce,
1556         .set_coalesce = gfar_scoalesce,
1557         .get_ringparam = gfar_gringparam,
1558         .set_ringparam = gfar_sringparam,
1559         .get_pauseparam = gfar_gpauseparam,
1560         .set_pauseparam = gfar_spauseparam,
1561         .get_strings = gfar_gstrings,
1562         .get_sset_count = gfar_sset_count,
1563         .get_ethtool_stats = gfar_fill_stats,
1564         .get_msglevel = gfar_get_msglevel,
1565         .set_msglevel = gfar_set_msglevel,
1566 #ifdef CONFIG_PM
1567         .get_wol = gfar_get_wol,
1568         .set_wol = gfar_set_wol,
1569 #endif
1570         .set_rxnfc = gfar_set_nfc,
1571         .get_rxnfc = gfar_get_nfc,
1572         .get_ts_info = gfar_get_ts_info,
1573 };