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 }
 186
 187
 188 static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
 189 {
 190         struct gfar_private *priv = netdev_priv(dev);
 191         struct phy_device *phydev = priv->phydev;
 192
 193         if (NULL == phydev)
 194                 return -ENODEV;
 195
 196         return phy_ethtool_sset(phydev, cmd);
 197 }
 198
 199
 200 /* Return the current settings in the ethtool_cmd structure */
 201 static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
 202 {
 203         struct gfar_private *priv = netdev_priv(dev);
 204         struct phy_device *phydev = priv->phydev;
 205         struct gfar_priv_rx_q *rx_queue = NULL;
 206         struct gfar_priv_tx_q *tx_queue = NULL;
 207
 208         if (NULL == phydev)
 209                 return -ENODEV;
 210         tx_queue = priv->tx_queue[0];
 211         rx_queue = priv->rx_queue[0];
 212
 213         /* etsec-1.7 and older versions have only one txic
 214          * and rxic regs although they support multiple queues */
 215         cmd->maxtxpkt = get_icft_value(tx_queue->txic);
 216         cmd->maxrxpkt = get_icft_value(rx_queue->rxic);
 217
 218         return phy_ethtool_gset(phydev, cmd);
 219 }
 220
 221 /* Return the length of the register structure */
 222 static int gfar_reglen(struct net_device *dev)
 223 {
 224         return sizeof (struct gfar);
 225 }
 226
 227 /* Return a dump of the GFAR register space */
 228 static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 229                           void *regbuf)
 230 {
 231         int i;
 232         struct gfar_private *priv = netdev_priv(dev);
 233         u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
 234         u32 *buf = (u32 *) regbuf;
 235
 236         for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
 237                 buf[i] = gfar_read(&theregs[i]);
 238 }
 239
 240 /* Convert microseconds to ethernet clock ticks, which changes
 241  * depending on what speed the controller is running at */
 242 static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
 243                                      unsigned int usecs)
 244 {
 245         unsigned int count;
 246
 247         /* The timer is different, depending on the interface speed */
 248         switch (priv->phydev->speed) {
 249         case SPEED_1000:
 250                 count = GFAR_GBIT_TIME;
 251                 break;
 252         case SPEED_100:
 253                 count = GFAR_100_TIME;
 254                 break;
 255         case SPEED_10:
 256         default:
 257                 count = GFAR_10_TIME;
 258                 break;
 259         }
 260
 261         /* Make sure we return a number greater than 0
 262          * if usecs > 0 */
 263         return (usecs * 1000 + count - 1) / count;
 264 }
 265
 266 /* Convert ethernet clock ticks to microseconds */
 267 static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
 268                                      unsigned int ticks)
 269 {
 270         unsigned int count;
 271
 272         /* The timer is different, depending on the interface speed */
 273         switch (priv->phydev->speed) {
 274         case SPEED_1000:
 275                 count = GFAR_GBIT_TIME;
 276                 break;
 277         case SPEED_100:
 278                 count = GFAR_100_TIME;
 279                 break;
 280         case SPEED_10:
 281         default:
 282                 count = GFAR_10_TIME;
 283                 break;
 284         }
 285
 286         /* Make sure we return a number greater than 0 */
 287         /* if ticks is > 0 */
 288         return (ticks * count) / 1000;
 289 }
 290
 291 /* Get the coalescing parameters, and put them in the cvals
 292  * structure.  */
 293 static int gfar_gcoalesce(struct net_device *dev,
 294                           struct ethtool_coalesce *cvals)
 295 {
 296         struct gfar_private *priv = netdev_priv(dev);
 297         struct gfar_priv_rx_q *rx_queue = NULL;
 298         struct gfar_priv_tx_q *tx_queue = NULL;
 299         unsigned long rxtime;
 300         unsigned long rxcount;
 301         unsigned long txtime;
 302         unsigned long txcount;
 303
 304         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 305                 return -EOPNOTSUPP;
 306
 307         if (NULL == priv->phydev)
 308                 return -ENODEV;
 309
 310         rx_queue = priv->rx_queue[0];
 311         tx_queue = priv->tx_queue[0];
 312
 313         rxtime  = get_ictt_value(rx_queue->rxic);
 314         rxcount = get_icft_value(rx_queue->rxic);
 315         txtime  = get_ictt_value(tx_queue->txic);
 316         txcount = get_icft_value(tx_queue->txic);
 317         cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
 318         cvals->rx_max_coalesced_frames = rxcount;
 319
 320         cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
 321         cvals->tx_max_coalesced_frames = txcount;
 322
 323         cvals->use_adaptive_rx_coalesce = 0;
 324         cvals->use_adaptive_tx_coalesce = 0;
 325
 326         cvals->pkt_rate_low = 0;
 327         cvals->rx_coalesce_usecs_low = 0;
 328         cvals->rx_max_coalesced_frames_low = 0;
 329         cvals->tx_coalesce_usecs_low = 0;
 330         cvals->tx_max_coalesced_frames_low = 0;
 331
 332         /* When the packet rate is below pkt_rate_high but above
 333          * pkt_rate_low (both measured in packets per second) the
 334          * normal {rx,tx}_* coalescing parameters are used.
 335          */
 336
 337         /* When the packet rate is (measured in packets per second)
 338          * is above pkt_rate_high, the {rx,tx}_*_high parameters are
 339          * used.
 340          */
 341         cvals->pkt_rate_high = 0;
 342         cvals->rx_coalesce_usecs_high = 0;
 343         cvals->rx_max_coalesced_frames_high = 0;
 344         cvals->tx_coalesce_usecs_high = 0;
 345         cvals->tx_max_coalesced_frames_high = 0;
 346
 347         /* How often to do adaptive coalescing packet rate sampling,
 348          * measured in seconds.  Must not be zero.
 349          */
 350         cvals->rate_sample_interval = 0;
 351
 352         return 0;
 353 }
 354
 355 /* Change the coalescing values.
 356  * Both cvals->*_usecs and cvals->*_frames have to be > 0
 357  * in order for coalescing to be active
 358  */
 359 static int gfar_scoalesce(struct net_device *dev,
 360                           struct ethtool_coalesce *cvals)
 361 {
 362         struct gfar_private *priv = netdev_priv(dev);
 363         int i, err = 0;
 364
 365         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 366                 return -EOPNOTSUPP;
 367
 368         if (NULL == priv->phydev)
 369                 return -ENODEV;
 370
 371         /* Check the bounds of the values */
 372         if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 373                 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
 374                             GFAR_MAX_COAL_USECS);
 375                 return -EINVAL;
 376         }
 377
 378         if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 379                 netdev_info(dev, "Coalescing is limited to %d frames\n",
 380                             GFAR_MAX_COAL_FRAMES);
 381                 return -EINVAL;
 382         }
 383
 384         /* Check the bounds of the values */
 385         if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 386                 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
 387                             GFAR_MAX_COAL_USECS);
 388                 return -EINVAL;
 389         }
 390
 391         if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 392                 netdev_info(dev, "Coalescing is limited to %d frames\n",
 393                             GFAR_MAX_COAL_FRAMES);
 394                 return -EINVAL;
 395         }
 396
 397         while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 398                 cpu_relax();
 399
 400         /* Set up rx coalescing */
 401         if ((cvals->rx_coalesce_usecs == 0) ||
 402             (cvals->rx_max_coalesced_frames == 0)) {
 403                 for (i = 0; i < priv->num_rx_queues; i++)
 404                         priv->rx_queue[i]->rxcoalescing = 0;
 405         } else {
 406                 for (i = 0; i < priv->num_rx_queues; i++)
 407                         priv->rx_queue[i]->rxcoalescing = 1;
 408         }
 409
 410         for (i = 0; i < priv->num_rx_queues; i++) {
 411                 priv->rx_queue[i]->rxic = mk_ic_value(
 412                         cvals->rx_max_coalesced_frames,
 413                         gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
 414         }
 415
 416         /* Set up tx coalescing */
 417         if ((cvals->tx_coalesce_usecs == 0) ||
 418             (cvals->tx_max_coalesced_frames == 0)) {
 419                 for (i = 0; i < priv->num_tx_queues; i++)
 420                         priv->tx_queue[i]->txcoalescing = 0;
 421         } else {
 422                 for (i = 0; i < priv->num_tx_queues; i++)
 423                         priv->tx_queue[i]->txcoalescing = 1;
 424         }
 425
 426         for (i = 0; i < priv->num_tx_queues; i++) {
 427                 priv->tx_queue[i]->txic = mk_ic_value(
 428                         cvals->tx_max_coalesced_frames,
 429                         gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
 430         }
 431
 432         if (dev->flags & IFF_UP) {
 433                 stop_gfar(dev);
 434                 err = startup_gfar(dev);
 435         } else {
 436                 gfar_mac_reset(priv);
 437         }
 438
 439         clear_bit_unlock(GFAR_RESETTING, &priv->state);
 440
 441         return err;
 442 }
 443
 444 /* Fills in rvals with the current ring parameters.  Currently,
 445  * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
 446  * jumbo are ignored by the driver */
 447 static void gfar_gringparam(struct net_device *dev,
 448                             struct ethtool_ringparam *rvals)
 449 {
 450         struct gfar_private *priv = netdev_priv(dev);
 451         struct gfar_priv_tx_q *tx_queue = NULL;
 452         struct gfar_priv_rx_q *rx_queue = NULL;
 453
 454         tx_queue = priv->tx_queue[0];
 455         rx_queue = priv->rx_queue[0];
 456
 457         rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
 458         rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
 459         rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
 460         rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
 461
 462         /* Values changeable by the user.  The valid values are
 463          * in the range 1 to the "*_max_pending" counterpart above.
 464          */
 465         rvals->rx_pending = rx_queue->rx_ring_size;
 466         rvals->rx_mini_pending = rx_queue->rx_ring_size;
 467         rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
 468         rvals->tx_pending = tx_queue->tx_ring_size;
 469 }
 470
 471 /* Change the current ring parameters, stopping the controller if
 472  * necessary so that we don't mess things up while we're in motion.
 473  */
 474 static int gfar_sringparam(struct net_device *dev,
 475                            struct ethtool_ringparam *rvals)
 476 {
 477         struct gfar_private *priv = netdev_priv(dev);
 478         int err = 0, i;
 479
 480         if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
 481                 return -EINVAL;
 482
 483         if (!is_power_of_2(rvals->rx_pending)) {
 484                 netdev_err(dev, "Ring sizes must be a power of 2\n");
 485                 return -EINVAL;
 486         }
 487
 488         if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
 489                 return -EINVAL;
 490
 491         if (!is_power_of_2(rvals->tx_pending)) {
 492                 netdev_err(dev, "Ring sizes must be a power of 2\n");
 493                 return -EINVAL;
 494         }
 495
 496         while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 497                 cpu_relax();
 498
 499         if (dev->flags & IFF_UP)
 500                 stop_gfar(dev);
 501
 502         /* Change the sizes */
 503         for (i = 0; i < priv->num_rx_queues; i++)
 504                 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
 505
 506         for (i = 0; i < priv->num_tx_queues; i++)
 507                 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
 508
 509         /* Rebuild the rings with the new size */
 510         if (dev->flags & IFF_UP)
 511                 err = startup_gfar(dev);
 512
 513         clear_bit_unlock(GFAR_RESETTING, &priv->state);
 514
 515         return err;
 516 }
 517
 518 static void gfar_gpauseparam(struct net_device *dev,
 519                              struct ethtool_pauseparam *epause)
 520 {
 521         struct gfar_private *priv = netdev_priv(dev);
 522
 523         epause->autoneg = !!priv->pause_aneg_en;
 524         epause->rx_pause = !!priv->rx_pause_en;
 525         epause->tx_pause = !!priv->tx_pause_en;
 526 }
 527
 528 static int gfar_spauseparam(struct net_device *dev,
 529                             struct ethtool_pauseparam *epause)
 530 {
 531         struct gfar_private *priv = netdev_priv(dev);
 532         struct phy_device *phydev = priv->phydev;
 533         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 534         u32 oldadv, newadv;
 535
 536         if (!phydev)
 537                 return -ENODEV;
 538
 539         if (!(phydev->supported & SUPPORTED_Pause) ||
 540             (!(phydev->supported & SUPPORTED_Asym_Pause) &&
 541              (epause->rx_pause != epause->tx_pause)))
 542                 return -EINVAL;
 543
 544         priv->rx_pause_en = priv->tx_pause_en = 0;
 545         if (epause->rx_pause) {
 546                 priv->rx_pause_en = 1;
 547
 548                 if (epause->tx_pause) {
 549                         priv->tx_pause_en = 1;
 550                         /* FLOW_CTRL_RX & TX */
 551                         newadv = ADVERTISED_Pause;
 552                 } else  /* FLOW_CTLR_RX */
 553                         newadv = ADVERTISED_Pause | ADVERTISED_Asym_Pause;
 554         } else if (epause->tx_pause) {
 555                 priv->tx_pause_en = 1;
 556                 /* FLOW_CTLR_TX */
 557                 newadv = ADVERTISED_Asym_Pause;
 558         } else
 559                 newadv = 0;
 560
 561         if (epause->autoneg)
 562                 priv->pause_aneg_en = 1;
 563         else
 564                 priv->pause_aneg_en = 0;
 565
 566         oldadv = phydev->advertising &
 567                 (ADVERTISED_Pause | ADVERTISED_Asym_Pause);
 568         if (oldadv != newadv) {
 569                 phydev->advertising &=
 570                         ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
 571                 phydev->advertising |= newadv;
 572                 if (phydev->autoneg)
 573                         /* inform link partner of our
 574                          * new flow ctrl settings
 575                          */
 576                         return phy_start_aneg(phydev);
 577
 578                 if (!epause->autoneg) {
 579                         u32 tempval;
 580                         tempval = gfar_read(&regs->maccfg1);
 581                         tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
 582
 583                         priv->tx_actual_en = 0;
 584                         if (priv->tx_pause_en) {
 585                                 priv->tx_actual_en = 1;
 586                                 tempval |= MACCFG1_TX_FLOW;
 587                         }
 588
 589                         if (priv->rx_pause_en)
 590                                 tempval |= MACCFG1_RX_FLOW;
 591                         gfar_write(&regs->maccfg1, tempval);
 592                 }
 593         }
 594
 595         return 0;
 596 }
 597
 598 int gfar_set_features(struct net_device *dev, netdev_features_t features)
 599 {
 600         netdev_features_t changed = dev->features ^ features;
 601         struct gfar_private *priv = netdev_priv(dev);
 602         int err = 0;
 603
 604         if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
 605                          NETIF_F_RXCSUM)))
 606                 return 0;
 607
 608         while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 609                 cpu_relax();
 610
 611         dev->features = features;
 612
 613         if (dev->flags & IFF_UP) {
 614                 /* Now we take down the rings to rebuild them */
 615                 stop_gfar(dev);
 616                 err = startup_gfar(dev);
 617         } else {
 618                 gfar_mac_reset(priv);
 619         }
 620
 621         clear_bit_unlock(GFAR_RESETTING, &priv->state);
 622
 623         return err;
 624 }
 625
 626 static uint32_t gfar_get_msglevel(struct net_device *dev)
 627 {
 628         struct gfar_private *priv = netdev_priv(dev);
 629
 630         return priv->msg_enable;
 631 }
 632
 633 static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
 634 {
 635         struct gfar_private *priv = netdev_priv(dev);
 636
 637         priv->msg_enable = data;
 638 }
 639
 640 #ifdef CONFIG_PM
 641 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 642 {
 643         struct gfar_private *priv = netdev_priv(dev);
 644
 645         wol->supported = 0;
 646         wol->wolopts = 0;
 647
 648         if (priv->wol_supported & GFAR_WOL_MAGIC)
 649                 wol->supported |= WAKE_MAGIC;
 650
 651         if (priv->wol_supported & GFAR_WOL_FILER_UCAST)
 652                 wol->supported |= WAKE_UCAST;
 653
 654         if (priv->wol_opts & GFAR_WOL_MAGIC)
 655                 wol->wolopts |= WAKE_MAGIC;
 656
 657         if (priv->wol_opts & GFAR_WOL_FILER_UCAST)
 658                 wol->wolopts |= WAKE_UCAST;
 659 }
 660
 661 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 662 {
 663         struct gfar_private *priv = netdev_priv(dev);
 664         u16 wol_opts = 0;
 665         int err;
 666
 667         if (!priv->wol_supported && wol->wolopts)
 668                 return -EINVAL;
 669
 670         if (wol->wolopts & ~(WAKE_MAGIC | WAKE_UCAST))
 671                 return -EINVAL;
 672
 673         if (wol->wolopts & WAKE_MAGIC) {
 674                 wol_opts |= GFAR_WOL_MAGIC;
 675         } else {
 676                 if (wol->wolopts & WAKE_UCAST)
 677                         wol_opts |= GFAR_WOL_FILER_UCAST;
 678         }
 679
 680         wol_opts &= priv->wol_supported;
 681         priv->wol_opts = 0;
 682
 683         err = device_set_wakeup_enable(priv->dev, wol_opts);
 684         if (err)
 685                 return err;
 686
 687         priv->wol_opts = wol_opts;
 688
 689         return 0;
 690 }
 691 #endif
 692
 693 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
 694 {
 695         u32 fcr = 0x0, fpr = FPR_FILER_MASK;
 696
 697         if (ethflow & RXH_L2DA) {
 698                 fcr = RQFCR_PID_DAH | RQFCR_CMP_NOMATCH |
 699                       RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 700                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 701                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 702                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 703                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 704
 705                 fcr = RQFCR_PID_DAL | RQFCR_CMP_NOMATCH |
 706                       RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 707                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 708                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 709                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 710                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 711         }
 712
 713         if (ethflow & RXH_VLAN) {
 714                 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 715                       RQFCR_AND | RQFCR_HASHTBL_0;
 716                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 717                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 718                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 719                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 720         }
 721
 722         if (ethflow & RXH_IP_SRC) {
 723                 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 724                       RQFCR_AND | RQFCR_HASHTBL_0;
 725                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 726                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 727                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 728                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 729         }
 730
 731         if (ethflow & (RXH_IP_DST)) {
 732                 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 733                       RQFCR_AND | RQFCR_HASHTBL_0;
 734                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 735                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 736                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 737                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 738         }
 739
 740         if (ethflow & RXH_L3_PROTO) {
 741                 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 742                       RQFCR_AND | RQFCR_HASHTBL_0;
 743                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 744                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 745                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 746                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 747         }
 748
 749         if (ethflow & RXH_L4_B_0_1) {
 750                 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 751                       RQFCR_AND | RQFCR_HASHTBL_0;
 752                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 753                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 754                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 755                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 756         }
 757
 758         if (ethflow & RXH_L4_B_2_3) {
 759                 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 760                       RQFCR_AND | RQFCR_HASHTBL_0;
 761                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 762                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 763                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 764                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 765         }
 766 }
 767
 768 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
 769                                        u64 class)
 770 {
 771         unsigned int last_rule_idx = priv->cur_filer_idx;
 772         unsigned int cmp_rqfpr;
 773         unsigned int *local_rqfpr;
 774         unsigned int *local_rqfcr;
 775         int i = 0x0, k = 0x0;
 776         int j = MAX_FILER_IDX, l = 0x0;
 777         int ret = 1;
 778
 779         local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 780                                     GFP_KERNEL);
 781         local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 782                                     GFP_KERNEL);
 783         if (!local_rqfpr || !local_rqfcr) {
 784                 ret = 0;
 785                 goto err;
 786         }
 787
 788         switch (class) {
 789         case TCP_V4_FLOW:
 790                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
 791                 break;
 792         case UDP_V4_FLOW:
 793                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
 794                 break;
 795         case TCP_V6_FLOW:
 796                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
 797                 break;
 798         case UDP_V6_FLOW:
 799                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
 800                 break;
 801         default:
 802                 netdev_err(priv->ndev,
 803                            "Right now this class is not supported\n");
 804                 ret = 0;
 805                 goto err;
 806         }
 807
 808         for (i = 0; i < MAX_FILER_IDX + 1; i++) {
 809                 local_rqfpr[j] = priv->ftp_rqfpr[i];
 810                 local_rqfcr[j] = priv->ftp_rqfcr[i];
 811                 j--;
 812                 if ((priv->ftp_rqfcr[i] ==
 813                      (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
 814                     (priv->ftp_rqfpr[i] == cmp_rqfpr))
 815                         break;
 816         }
 817
 818         if (i == MAX_FILER_IDX + 1) {
 819                 netdev_err(priv->ndev,
 820                            "No parse rule found, can't create hash rules\n");
 821                 ret = 0;
 822                 goto err;
 823         }
 824
 825         /* If a match was found, then it begins the starting of a cluster rule
 826          * if it was already programmed, we need to overwrite these rules
 827          */
 828         for (l = i+1; l < MAX_FILER_IDX; l++) {
 829                 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 830                     !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
 831                         priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
 832                                              RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
 833                         priv->ftp_rqfpr[l] = FPR_FILER_MASK;
 834                         gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
 835                                          priv->ftp_rqfpr[l]);
 836                         break;
 837                 }
 838
 839                 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 840                         (priv->ftp_rqfcr[l] & RQFCR_AND))
 841                         continue;
 842                 else {
 843                         local_rqfpr[j] = priv->ftp_rqfpr[l];
 844                         local_rqfcr[j] = priv->ftp_rqfcr[l];
 845                         j--;
 846                 }
 847         }
 848
 849         priv->cur_filer_idx = l - 1;
 850         last_rule_idx = l;
 851
 852         /* hash rules */
 853         ethflow_to_filer_rules(priv, ethflow);
 854
 855         /* Write back the popped out rules again */
 856         for (k = j+1; k < MAX_FILER_IDX; k++) {
 857                 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
 858                 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
 859                 gfar_write_filer(priv, priv->cur_filer_idx,
 860                                  local_rqfcr[k], local_rqfpr[k]);
 861                 if (!priv->cur_filer_idx)
 862                         break;
 863                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 864         }
 865
 866 err:
 867         kfree(local_rqfcr);
 868         kfree(local_rqfpr);
 869         return ret;
 870 }
 871
 872 static int gfar_set_hash_opts(struct gfar_private *priv,
 873                               struct ethtool_rxnfc *cmd)
 874 {
 875         /* write the filer rules here */
 876         if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
 877                 return -EINVAL;
 878
 879         return 0;
 880 }
 881
 882 static int gfar_check_filer_hardware(struct gfar_private *priv)
 883 {
 884         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 885         u32 i;
 886
 887         /* Check if we are in FIFO mode */
 888         i = gfar_read(&regs->ecntrl);
 889         i &= ECNTRL_FIFM;
 890         if (i == ECNTRL_FIFM) {
 891                 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
 892                 i = gfar_read(&regs->rctrl);
 893                 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
 894                 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
 895                         netdev_info(priv->ndev,
 896                                     "Receive Queue Filtering enabled\n");
 897                 } else {
 898                         netdev_warn(priv->ndev,
 899                                     "Receive Queue Filtering disabled\n");
 900                         return -EOPNOTSUPP;
 901                 }
 902         }
 903         /* Or in standard mode */
 904         else {
 905                 i = gfar_read(&regs->rctrl);
 906                 i &= RCTRL_PRSDEP_MASK;
 907                 if (i == RCTRL_PRSDEP_MASK) {
 908                         netdev_info(priv->ndev,
 909                                     "Receive Queue Filtering enabled\n");
 910                 } else {
 911                         netdev_warn(priv->ndev,
 912                                     "Receive Queue Filtering disabled\n");
 913                         return -EOPNOTSUPP;
 914                 }
 915         }
 916
 917         /* Sets the properties for arbitrary filer rule
 918          * to the first 4 Layer 4 Bytes
 919          */
 920         gfar_write(&regs->rbifx, 0xC0C1C2C3);
 921         return 0;
 922 }
 923
 924 /* Write a mask to filer cache */
 925 static void gfar_set_mask(u32 mask, struct filer_table *tab)
 926 {
 927         tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
 928         tab->fe[tab->index].prop = mask;
 929         tab->index++;
 930 }
 931
 932 /* Sets parse bits (e.g. IP or TCP) */
 933 static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
 934 {
 935         gfar_set_mask(mask, tab);
 936         tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
 937                                    RQFCR_AND;
 938         tab->fe[tab->index].prop = value;
 939         tab->index++;
 940 }
 941
 942 static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
 943                                        struct filer_table *tab)
 944 {
 945         gfar_set_mask(mask, tab);
 946         tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
 947         tab->fe[tab->index].prop = value;
 948         tab->index++;
 949 }
 950
 951 /* For setting a tuple of value and mask of type flag
 952  * Example:
 953  * IP-Src = 10.0.0.0/255.0.0.0
 954  * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
 955  *
 956  * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
 957  * For a don't care mask it gives us a 0
 958  *
 959  * The check if don't care and the mask adjustment if mask=0 is done for VLAN
 960  * and MAC stuff on an upper level (due to missing information on this level).
 961  * For these guys we can discard them if they are value=0 and mask=0.
 962  *
 963  * Further the all masks are one-padded for better hardware efficiency.
 964  */
 965 static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
 966                                struct filer_table *tab)
 967 {
 968         switch (flag) {
 969                 /* 3bit */
 970         case RQFCR_PID_PRI:
 971                 if (!(value | mask))
 972                         return;
 973                 mask |= RQFCR_PID_PRI_MASK;
 974                 break;
 975                 /* 8bit */
 976         case RQFCR_PID_L4P:
 977         case RQFCR_PID_TOS:
 978                 if (!~(mask | RQFCR_PID_L4P_MASK))
 979                         return;
 980                 if (!mask)
 981                         mask = ~0;
 982                 else
 983                         mask |= RQFCR_PID_L4P_MASK;
 984                 break;
 985                 /* 12bit */
 986         case RQFCR_PID_VID:
 987                 if (!(value | mask))
 988                         return;
 989                 mask |= RQFCR_PID_VID_MASK;
 990                 break;
 991                 /* 16bit */
 992         case RQFCR_PID_DPT:
 993         case RQFCR_PID_SPT:
 994         case RQFCR_PID_ETY:
 995                 if (!~(mask | RQFCR_PID_PORT_MASK))
 996                         return;
 997                 if (!mask)
 998                         mask = ~0;
 999                 else
1000                         mask |= RQFCR_PID_PORT_MASK;
1001                 break;
1002                 /* 24bit */
1003         case RQFCR_PID_DAH:
1004         case RQFCR_PID_DAL:
1005         case RQFCR_PID_SAH:
1006         case RQFCR_PID_SAL:
1007                 if (!(value | mask))
1008                         return;
1009                 mask |= RQFCR_PID_MAC_MASK;
1010                 break;
1011                 /* for all real 32bit masks */
1012         default:
1013                 if (!~mask)
1014                         return;
1015                 if (!mask)
1016                         mask = ~0;
1017                 break;
1018         }
1019         gfar_set_general_attribute(value, mask, flag, tab);
1020 }
1021
1022 /* Translates value and mask for UDP, TCP or SCTP */
1023 static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
1024                               struct ethtool_tcpip4_spec *mask,
1025                               struct filer_table *tab)
1026 {
1027         gfar_set_attribute(be32_to_cpu(value->ip4src),
1028                            be32_to_cpu(mask->ip4src),
1029                            RQFCR_PID_SIA, tab);
1030         gfar_set_attribute(be32_to_cpu(value->ip4dst),
1031                            be32_to_cpu(mask->ip4dst),
1032                            RQFCR_PID_DIA, tab);
1033         gfar_set_attribute(be16_to_cpu(value->pdst),
1034                            be16_to_cpu(mask->pdst),
1035                            RQFCR_PID_DPT, tab);
1036         gfar_set_attribute(be16_to_cpu(value->psrc),
1037                            be16_to_cpu(mask->psrc),
1038                            RQFCR_PID_SPT, tab);
1039         gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1040 }
1041
1042 /* Translates value and mask for RAW-IP4 */
1043 static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
1044                              struct ethtool_usrip4_spec *mask,
1045                              struct filer_table *tab)
1046 {
1047         gfar_set_attribute(be32_to_cpu(value->ip4src),
1048                            be32_to_cpu(mask->ip4src),
1049                            RQFCR_PID_SIA, tab);
1050         gfar_set_attribute(be32_to_cpu(value->ip4dst),
1051                            be32_to_cpu(mask->ip4dst),
1052                            RQFCR_PID_DIA, tab);
1053         gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1054         gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
1055         gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
1056                            be32_to_cpu(mask->l4_4_bytes),
1057                            RQFCR_PID_ARB, tab);
1058
1059 }
1060
1061 /* Translates value and mask for ETHER spec */
1062 static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
1063                            struct filer_table *tab)
1064 {
1065         u32 upper_temp_mask = 0;
1066         u32 lower_temp_mask = 0;
1067
1068         /* Source address */
1069         if (!is_broadcast_ether_addr(mask->h_source)) {
1070                 if (is_zero_ether_addr(mask->h_source)) {
1071                         upper_temp_mask = 0xFFFFFFFF;
1072                         lower_temp_mask = 0xFFFFFFFF;
1073                 } else {
1074                         upper_temp_mask = mask->h_source[0] << 16 |
1075                                           mask->h_source[1] << 8  |
1076                                           mask->h_source[2];
1077                         lower_temp_mask = mask->h_source[3] << 16 |
1078                                           mask->h_source[4] << 8  |
1079                                           mask->h_source[5];
1080                 }
1081                 /* Upper 24bit */
1082                 gfar_set_attribute(value->h_source[0] << 16 |
1083                                    value->h_source[1] << 8  |
1084                                    value->h_source[2],
1085                                    upper_temp_mask, RQFCR_PID_SAH, tab);
1086                 /* And the same for the lower part */
1087                 gfar_set_attribute(value->h_source[3] << 16 |
1088                                    value->h_source[4] << 8  |
1089                                    value->h_source[5],
1090                                    lower_temp_mask, RQFCR_PID_SAL, tab);
1091         }
1092         /* Destination address */
1093         if (!is_broadcast_ether_addr(mask->h_dest)) {
1094                 /* Special for destination is limited broadcast */
1095                 if ((is_broadcast_ether_addr(value->h_dest) &&
1096                     is_zero_ether_addr(mask->h_dest))) {
1097                         gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1098                 } else {
1099                         if (is_zero_ether_addr(mask->h_dest)) {
1100                                 upper_temp_mask = 0xFFFFFFFF;
1101                                 lower_temp_mask = 0xFFFFFFFF;
1102                         } else {
1103                                 upper_temp_mask = mask->h_dest[0] << 16 |
1104                                                   mask->h_dest[1] << 8  |
1105                                                   mask->h_dest[2];
1106                                 lower_temp_mask = mask->h_dest[3] << 16 |
1107                                                   mask->h_dest[4] << 8  |
1108                                                   mask->h_dest[5];
1109                         }
1110
1111                         /* Upper 24bit */
1112                         gfar_set_attribute(value->h_dest[0] << 16 |
1113                                            value->h_dest[1] << 8  |
1114                                            value->h_dest[2],
1115                                            upper_temp_mask, RQFCR_PID_DAH, tab);
1116                         /* And the same for the lower part */
1117                         gfar_set_attribute(value->h_dest[3] << 16 |
1118                                            value->h_dest[4] << 8  |
1119                                            value->h_dest[5],
1120                                            lower_temp_mask, RQFCR_PID_DAL, tab);
1121                 }
1122         }
1123
1124         gfar_set_attribute(be16_to_cpu(value->h_proto),
1125                            be16_to_cpu(mask->h_proto),
1126                            RQFCR_PID_ETY, tab);
1127 }
1128
1129 static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1130 {
1131         return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1132 }
1133
1134 static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1135 {
1136         return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1137 }
1138
1139 static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1140 {
1141         return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1142 }
1143
1144 static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1145 {
1146         return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1147 }
1148
1149 static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1150 {
1151         return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1152                 VLAN_PRIO_SHIFT;
1153 }
1154
1155 static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1156 {
1157         return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1158                 VLAN_PRIO_SHIFT;
1159 }
1160
1161 /* Convert a rule to binary filter format of gianfar */
1162 static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1163                                  struct filer_table *tab)
1164 {
1165         u32 vlan = 0, vlan_mask = 0;
1166         u32 id = 0, id_mask = 0;
1167         u32 cfi = 0, cfi_mask = 0;
1168         u32 prio = 0, prio_mask = 0;
1169         u32 old_index = tab->index;
1170
1171         /* Check if vlan is wanted */
1172         if ((rule->flow_type & FLOW_EXT) &&
1173             (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1174                 if (!rule->m_ext.vlan_tci)
1175                         rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1176
1177                 vlan = RQFPR_VLN;
1178                 vlan_mask = RQFPR_VLN;
1179
1180                 /* Separate the fields */
1181                 id = vlan_tci_vid(rule);
1182                 id_mask = vlan_tci_vidm(rule);
1183                 cfi = vlan_tci_cfi(rule);
1184                 cfi_mask = vlan_tci_cfim(rule);
1185                 prio = vlan_tci_prio(rule);
1186                 prio_mask = vlan_tci_priom(rule);
1187
1188                 if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
1189                         vlan |= RQFPR_CFI;
1190                         vlan_mask |= RQFPR_CFI;
1191                 } else if (cfi != VLAN_TAG_PRESENT &&
1192                            cfi_mask == VLAN_TAG_PRESENT) {
1193                         vlan_mask |= RQFPR_CFI;
1194                 }
1195         }
1196
1197         switch (rule->flow_type & ~FLOW_EXT) {
1198         case TCP_V4_FLOW:
1199                 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1200                                     RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1201                 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1202                                   &rule->m_u.tcp_ip4_spec, tab);
1203                 break;
1204         case UDP_V4_FLOW:
1205                 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1206                                     RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1207                 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1208                                   &rule->m_u.udp_ip4_spec, tab);
1209                 break;
1210         case SCTP_V4_FLOW:
1211                 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1212                                     tab);
1213                 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1214                 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1215                                   (struct ethtool_tcpip4_spec *)&rule->m_u,
1216                                   tab);
1217                 break;
1218         case IP_USER_FLOW:
1219                 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1220                                     tab);
1221                 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1222                                  (struct ethtool_usrip4_spec *) &rule->m_u,
1223                                  tab);
1224                 break;
1225         case ETHER_FLOW:
1226                 if (vlan)
1227                         gfar_set_parse_bits(vlan, vlan_mask, tab);
1228                 gfar_set_ether((struct ethhdr *) &rule->h_u,
1229                                (struct ethhdr *) &rule->m_u, tab);
1230                 break;
1231         default:
1232                 return -1;
1233         }
1234
1235         /* Set the vlan attributes in the end */
1236         if (vlan) {
1237                 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1238                 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1239         }
1240
1241         /* If there has been nothing written till now, it must be a default */
1242         if (tab->index == old_index) {
1243                 gfar_set_mask(0xFFFFFFFF, tab);
1244                 tab->fe[tab->index].ctrl = 0x20;
1245                 tab->fe[tab->index].prop = 0x0;
1246                 tab->index++;
1247         }
1248
1249         /* Remove last AND */
1250         tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1251
1252         /* Specify which queue to use or to drop */
1253         if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1254                 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1255         else
1256                 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1257
1258         /* Only big enough entries can be clustered */
1259         if (tab->index > (old_index + 2)) {
1260                 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1261                 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1262         }
1263
1264         /* In rare cases the cache can be full while there is
1265          * free space in hw
1266          */
1267         if (tab->index > MAX_FILER_CACHE_IDX - 1)
1268                 return -EBUSY;
1269
1270         return 0;
1271 }
1272
1273 /* Write the bit-pattern from software's buffer to hardware registers */
1274 static int gfar_write_filer_table(struct gfar_private *priv,
1275                                   struct filer_table *tab)
1276 {
1277         u32 i = 0;
1278         if (tab->index > MAX_FILER_IDX - 1)
1279                 return -EBUSY;
1280
1281         /* Fill regular entries */
1282         for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
1283                 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1284         /* Fill the rest with fall-troughs */
1285         for (; i < MAX_FILER_IDX; i++)
1286                 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1287         /* Last entry must be default accept
1288          * because that's what people expect
1289          */
1290         gfar_write_filer(priv, i, 0x20, 0x0);
1291
1292         return 0;
1293 }
1294
1295 static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1296                                  struct gfar_private *priv)
1297 {
1298
1299         if (flow->flow_type & FLOW_EXT) {
1300                 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1301                         netdev_warn(priv->ndev,
1302                                     "User-specific data not supported!\n");
1303                 if (~flow->m_ext.vlan_etype)
1304                         netdev_warn(priv->ndev,
1305                                     "VLAN-etype not supported!\n");
1306         }
1307         if (flow->flow_type == IP_USER_FLOW)
1308                 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1309                         netdev_warn(priv->ndev,
1310                                     "IP-Version differing from IPv4 not supported!\n");
1311
1312         return 0;
1313 }
1314
1315 static int gfar_process_filer_changes(struct gfar_private *priv)
1316 {
1317         struct ethtool_flow_spec_container *j;
1318         struct filer_table *tab;
1319         s32 ret = 0;
1320
1321         /* So index is set to zero, too! */
1322         tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1323         if (tab == NULL)
1324                 return -ENOMEM;
1325
1326         /* Now convert the existing filer data from flow_spec into
1327          * filer tables binary format
1328          */
1329         list_for_each_entry(j, &priv->rx_list.list, list) {
1330                 ret = gfar_convert_to_filer(&j->fs, tab);
1331                 if (ret == -EBUSY) {
1332                         netdev_err(priv->ndev,
1333                                    "Rule not added: No free space!\n");
1334                         goto end;
1335                 }
1336                 if (ret == -1) {
1337                         netdev_err(priv->ndev,
1338                                    "Rule not added: Unsupported Flow-type!\n");
1339                         goto end;
1340                 }
1341         }
1342
1343         /* Write everything to hardware */
1344         ret = gfar_write_filer_table(priv, tab);
1345         if (ret == -EBUSY) {
1346                 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1347                 goto end;
1348         }
1349
1350 end:
1351         kfree(tab);
1352         return ret;
1353 }
1354
1355 static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1356 {
1357         u32 i = 0;
1358
1359         for (i = 0; i < sizeof(flow->m_u); i++)
1360                 flow->m_u.hdata[i] ^= 0xFF;
1361
1362         flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1363         flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1364         flow->m_ext.data[0] ^= cpu_to_be32(~0);
1365         flow->m_ext.data[1] ^= cpu_to_be32(~0);
1366 }
1367
1368 static int gfar_add_cls(struct gfar_private *priv,
1369                         struct ethtool_rx_flow_spec *flow)
1370 {
1371         struct ethtool_flow_spec_container *temp, *comp;
1372         int ret = 0;
1373
1374         temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1375         if (temp == NULL)
1376                 return -ENOMEM;
1377         memcpy(&temp->fs, flow, sizeof(temp->fs));
1378
1379         gfar_invert_masks(&temp->fs);
1380         ret = gfar_check_capability(&temp->fs, priv);
1381         if (ret)
1382                 goto clean_mem;
1383         /* Link in the new element at the right @location */
1384         if (list_empty(&priv->rx_list.list)) {
1385                 ret = gfar_check_filer_hardware(priv);
1386                 if (ret != 0)
1387                         goto clean_mem;
1388                 list_add(&temp->list, &priv->rx_list.list);
1389                 goto process;
1390         } else {
1391                 list_for_each_entry(comp, &priv->rx_list.list, list) {
1392                         if (comp->fs.location > flow->location) {
1393                                 list_add_tail(&temp->list, &comp->list);
1394                                 goto process;
1395                         }
1396                         if (comp->fs.location == flow->location) {
1397                                 netdev_err(priv->ndev,
1398                                            "Rule not added: ID %d not free!\n",
1399                                            flow->location);
1400                                 ret = -EBUSY;
1401                                 goto clean_mem;
1402                         }
1403                 }
1404                 list_add_tail(&temp->list, &priv->rx_list.list);
1405         }
1406
1407 process:
1408         priv->rx_list.count++;
1409         ret = gfar_process_filer_changes(priv);
1410         if (ret)
1411                 goto clean_list;
1412         return ret;
1413
1414 clean_list:
1415         priv->rx_list.count--;
1416         list_del(&temp->list);
1417 clean_mem:
1418         kfree(temp);
1419         return ret;
1420 }
1421
1422 static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1423 {
1424         struct ethtool_flow_spec_container *comp;
1425         u32 ret = -EINVAL;
1426
1427         if (list_empty(&priv->rx_list.list))
1428                 return ret;
1429
1430         list_for_each_entry(comp, &priv->rx_list.list, list) {
1431                 if (comp->fs.location == loc) {
1432                         list_del(&comp->list);
1433                         kfree(comp);
1434                         priv->rx_list.count--;
1435                         gfar_process_filer_changes(priv);
1436                         ret = 0;
1437                         break;
1438                 }
1439         }
1440
1441         return ret;
1442 }
1443
1444 static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1445 {
1446         struct ethtool_flow_spec_container *comp;
1447         u32 ret = -EINVAL;
1448
1449         list_for_each_entry(comp, &priv->rx_list.list, list) {
1450                 if (comp->fs.location == cmd->fs.location) {
1451                         memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1452                         gfar_invert_masks(&cmd->fs);
1453                         ret = 0;
1454                         break;
1455                 }
1456         }
1457
1458         return ret;
1459 }
1460
1461 static int gfar_get_cls_all(struct gfar_private *priv,
1462                             struct ethtool_rxnfc *cmd, u32 *rule_locs)
1463 {
1464         struct ethtool_flow_spec_container *comp;
1465         u32 i = 0;
1466
1467         list_for_each_entry(comp, &priv->rx_list.list, list) {
1468                 if (i == cmd->rule_cnt)
1469                         return -EMSGSIZE;
1470                 rule_locs[i] = comp->fs.location;
1471                 i++;
1472         }
1473
1474         cmd->data = MAX_FILER_IDX;
1475         cmd->rule_cnt = i;
1476
1477         return 0;
1478 }
1479
1480 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1481 {
1482         struct gfar_private *priv = netdev_priv(dev);
1483         int ret = 0;
1484
1485         if (test_bit(GFAR_RESETTING, &priv->state))
1486                 return -EBUSY;
1487
1488         mutex_lock(&priv->rx_queue_access);
1489
1490         switch (cmd->cmd) {
1491         case ETHTOOL_SRXFH:
1492                 ret = gfar_set_hash_opts(priv, cmd);
1493                 break;
1494         case ETHTOOL_SRXCLSRLINS:
1495                 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1496                      cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1497                     cmd->fs.location >= MAX_FILER_IDX) {
1498                         ret = -EINVAL;
1499                         break;
1500                 }
1501                 ret = gfar_add_cls(priv, &cmd->fs);
1502                 break;
1503         case ETHTOOL_SRXCLSRLDEL:
1504                 ret = gfar_del_cls(priv, cmd->fs.location);
1505                 break;
1506         default:
1507                 ret = -EINVAL;
1508         }
1509
1510         mutex_unlock(&priv->rx_queue_access);
1511
1512         return ret;
1513 }
1514
1515 static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1516                         u32 *rule_locs)
1517 {
1518         struct gfar_private *priv = netdev_priv(dev);
1519         int ret = 0;
1520
1521         switch (cmd->cmd) {
1522         case ETHTOOL_GRXRINGS:
1523                 cmd->data = priv->num_rx_queues;
1524                 break;
1525         case ETHTOOL_GRXCLSRLCNT:
1526                 cmd->rule_cnt = priv->rx_list.count;
1527                 break;
1528         case ETHTOOL_GRXCLSRULE:
1529                 ret = gfar_get_cls(priv, cmd);
1530                 break;
1531         case ETHTOOL_GRXCLSRLALL:
1532                 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1533                 break;
1534         default:
1535                 ret = -EINVAL;
1536                 break;
1537         }
1538
1539         return ret;
1540 }
1541
1542 int gfar_phc_index = -1;
1543 EXPORT_SYMBOL(gfar_phc_index);
1544
1545 static int gfar_get_ts_info(struct net_device *dev,
1546                             struct ethtool_ts_info *info)
1547 {
1548         struct gfar_private *priv = netdev_priv(dev);
1549
1550         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1551                 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1552                                         SOF_TIMESTAMPING_SOFTWARE;
1553                 info->phc_index = -1;
1554                 return 0;
1555         }
1556         info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1557                                 SOF_TIMESTAMPING_RX_HARDWARE |
1558                                 SOF_TIMESTAMPING_RAW_HARDWARE;
1559         info->phc_index = gfar_phc_index;
1560         info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1561                          (1 << HWTSTAMP_TX_ON);
1562         info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1563                            (1 << HWTSTAMP_FILTER_ALL);
1564         return 0;
1565 }
1566
1567 const struct ethtool_ops gfar_ethtool_ops = {
1568         .get_settings = gfar_gsettings,
1569         .set_settings = gfar_ssettings,
1570         .get_drvinfo = gfar_gdrvinfo,
1571         .get_regs_len = gfar_reglen,
1572         .get_regs = gfar_get_regs,
1573         .get_link = ethtool_op_get_link,
1574         .get_coalesce = gfar_gcoalesce,
1575         .set_coalesce = gfar_scoalesce,
1576         .get_ringparam = gfar_gringparam,
1577         .set_ringparam = gfar_sringparam,
1578         .get_pauseparam = gfar_gpauseparam,
1579         .set_pauseparam = gfar_spauseparam,
1580         .get_strings = gfar_gstrings,
1581         .get_sset_count = gfar_sset_count,
1582         .get_ethtool_stats = gfar_fill_stats,
1583         .get_msglevel = gfar_get_msglevel,
1584         .set_msglevel = gfar_set_msglevel,
1585 #ifdef CONFIG_PM
1586         .get_wol = gfar_get_wol,
1587         .set_wol = gfar_set_wol,
1588 #endif
1589         .set_rxnfc = gfar_set_nfc,
1590         .get_rxnfc = gfar_get_nfc,
1591         .get_ts_info = gfar_get_ts_info,
1592 };