Pileus Git - ~andy/linux/blob - 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 extern void gfar_start(struct net_device *dev);
  48 extern int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue,
  49                               int rx_work_limit);
  50
  51 #define GFAR_MAX_COAL_USECS 0xffff
  52 #define GFAR_MAX_COAL_FRAMES 0xff
  53 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
  54                             u64 *buf);
  55 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
  56 static int gfar_gcoalesce(struct net_device *dev,
  57                           struct ethtool_coalesce *cvals);
  58 static int gfar_scoalesce(struct net_device *dev,
  59                           struct ethtool_coalesce *cvals);
  60 static void gfar_gringparam(struct net_device *dev,
  61                             struct ethtool_ringparam *rvals);
  62 static int gfar_sringparam(struct net_device *dev,
  63                            struct ethtool_ringparam *rvals);
  64 static void gfar_gdrvinfo(struct net_device *dev,
  65                           struct ethtool_drvinfo *drvinfo);
  66
  67 static const char stat_gstrings[][ETH_GSTRING_LEN] = {
  68         "rx-large-frame-errors",
  69         "rx-short-frame-errors",
  70         "rx-non-octet-errors",
  71         "rx-crc-errors",
  72         "rx-overrun-errors",
  73         "rx-busy-errors",
  74         "rx-babbling-errors",
  75         "rx-truncated-frames",
  76         "ethernet-bus-error",
  77         "tx-babbling-errors",
  78         "tx-underrun-errors",
  79         "rx-skb-missing-errors",
  80         "tx-timeout-errors",
  81         "tx-rx-64-frames",
  82         "tx-rx-65-127-frames",
  83         "tx-rx-128-255-frames",
  84         "tx-rx-256-511-frames",
  85         "tx-rx-512-1023-frames",
  86         "tx-rx-1024-1518-frames",
  87         "tx-rx-1519-1522-good-vlan",
  88         "rx-bytes",
  89         "rx-packets",
  90         "rx-fcs-errors",
  91         "receive-multicast-packet",
  92         "receive-broadcast-packet",
  93         "rx-control-frame-packets",
  94         "rx-pause-frame-packets",
  95         "rx-unknown-op-code",
  96         "rx-alignment-error",
  97         "rx-frame-length-error",
  98         "rx-code-error",
  99         "rx-carrier-sense-error",
 100         "rx-undersize-packets",
 101         "rx-oversize-packets",
 102         "rx-fragmented-frames",
 103         "rx-jabber-frames",
 104         "rx-dropped-frames",
 105         "tx-byte-counter",
 106         "tx-packets",
 107         "tx-multicast-packets",
 108         "tx-broadcast-packets",
 109         "tx-pause-control-frames",
 110         "tx-deferral-packets",
 111         "tx-excessive-deferral-packets",
 112         "tx-single-collision-packets",
 113         "tx-multiple-collision-packets",
 114         "tx-late-collision-packets",
 115         "tx-excessive-collision-packets",
 116         "tx-total-collision",
 117         "reserved",
 118         "tx-dropped-frames",
 119         "tx-jabber-frames",
 120         "tx-fcs-errors",
 121         "tx-control-frames",
 122         "tx-oversize-frames",
 123         "tx-undersize-frames",
 124         "tx-fragmented-frames",
 125 };
 126
 127 /* Fill in a buffer with the strings which correspond to the
 128  * stats */
 129 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
 130 {
 131         struct gfar_private *priv = netdev_priv(dev);
 132
 133         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
 134                 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
 135         else
 136                 memcpy(buf, stat_gstrings,
 137                        GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
 138 }
 139
 140 /* Fill in an array of 64-bit statistics from various sources.
 141  * This array will be appended to the end of the ethtool_stats
 142  * structure, and returned to user space
 143  */
 144 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
 145                             u64 *buf)
 146 {
 147         int i;
 148         struct gfar_private *priv = netdev_priv(dev);
 149         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 150         atomic64_t *extra = (atomic64_t *)&priv->extra_stats;
 151
 152         for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
 153                 buf[i] = atomic64_read(&extra[i]);
 154
 155         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
 156                 u32 __iomem *rmon = (u32 __iomem *) &regs->rmon;
 157
 158                 for (; i < GFAR_STATS_LEN; i++, rmon++)
 159                         buf[i] = (u64) gfar_read(rmon);
 160         }
 161 }
 162
 163 static int gfar_sset_count(struct net_device *dev, int sset)
 164 {
 165         struct gfar_private *priv = netdev_priv(dev);
 166
 167         switch (sset) {
 168         case ETH_SS_STATS:
 169                 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
 170                         return GFAR_STATS_LEN;
 171                 else
 172                         return GFAR_EXTRA_STATS_LEN;
 173         default:
 174                 return -EOPNOTSUPP;
 175         }
 176 }
 177
 178 /* Fills in the drvinfo structure with some basic info */
 179 static void gfar_gdrvinfo(struct net_device *dev,
 180                           struct ethtool_drvinfo *drvinfo)
 181 {
 182         strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
 183         strlcpy(drvinfo->version, gfar_driver_version,
 184                 sizeof(drvinfo->version));
 185         strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
 186         strlcpy(drvinfo->bus_info, "N/A", sizeof(drvinfo->bus_info));
 187         drvinfo->regdump_len = 0;
 188         drvinfo->eedump_len = 0;
 189 }
 190
 191
 192 static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
 193 {
 194         struct gfar_private *priv = netdev_priv(dev);
 195         struct phy_device *phydev = priv->phydev;
 196
 197         if (NULL == phydev)
 198                 return -ENODEV;
 199
 200         return phy_ethtool_sset(phydev, cmd);
 201 }
 202
 203
 204 /* Return the current settings in the ethtool_cmd structure */
 205 static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
 206 {
 207         struct gfar_private *priv = netdev_priv(dev);
 208         struct phy_device *phydev = priv->phydev;
 209         struct gfar_priv_rx_q *rx_queue = NULL;
 210         struct gfar_priv_tx_q *tx_queue = NULL;
 211
 212         if (NULL == phydev)
 213                 return -ENODEV;
 214         tx_queue = priv->tx_queue[0];
 215         rx_queue = priv->rx_queue[0];
 216
 217         /* etsec-1.7 and older versions have only one txic
 218          * and rxic regs although they support multiple queues */
 219         cmd->maxtxpkt = get_icft_value(tx_queue->txic);
 220         cmd->maxrxpkt = get_icft_value(rx_queue->rxic);
 221
 222         return phy_ethtool_gset(phydev, cmd);
 223 }
 224
 225 /* Return the length of the register structure */
 226 static int gfar_reglen(struct net_device *dev)
 227 {
 228         return sizeof (struct gfar);
 229 }
 230
 231 /* Return a dump of the GFAR register space */
 232 static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 233                           void *regbuf)
 234 {
 235         int i;
 236         struct gfar_private *priv = netdev_priv(dev);
 237         u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
 238         u32 *buf = (u32 *) regbuf;
 239
 240         for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
 241                 buf[i] = gfar_read(&theregs[i]);
 242 }
 243
 244 /* Convert microseconds to ethernet clock ticks, which changes
 245  * depending on what speed the controller is running at */
 246 static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
 247                                      unsigned int usecs)
 248 {
 249         unsigned int count;
 250
 251         /* The timer is different, depending on the interface speed */
 252         switch (priv->phydev->speed) {
 253         case SPEED_1000:
 254                 count = GFAR_GBIT_TIME;
 255                 break;
 256         case SPEED_100:
 257                 count = GFAR_100_TIME;
 258                 break;
 259         case SPEED_10:
 260         default:
 261                 count = GFAR_10_TIME;
 262                 break;
 263         }
 264
 265         /* Make sure we return a number greater than 0
 266          * if usecs > 0 */
 267         return (usecs * 1000 + count - 1) / count;
 268 }
 269
 270 /* Convert ethernet clock ticks to microseconds */
 271 static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
 272                                      unsigned int ticks)
 273 {
 274         unsigned int count;
 275
 276         /* The timer is different, depending on the interface speed */
 277         switch (priv->phydev->speed) {
 278         case SPEED_1000:
 279                 count = GFAR_GBIT_TIME;
 280                 break;
 281         case SPEED_100:
 282                 count = GFAR_100_TIME;
 283                 break;
 284         case SPEED_10:
 285         default:
 286                 count = GFAR_10_TIME;
 287                 break;
 288         }
 289
 290         /* Make sure we return a number greater than 0 */
 291         /* if ticks is > 0 */
 292         return (ticks * count) / 1000;
 293 }
 294
 295 /* Get the coalescing parameters, and put them in the cvals
 296  * structure.  */
 297 static int gfar_gcoalesce(struct net_device *dev,
 298                           struct ethtool_coalesce *cvals)
 299 {
 300         struct gfar_private *priv = netdev_priv(dev);
 301         struct gfar_priv_rx_q *rx_queue = NULL;
 302         struct gfar_priv_tx_q *tx_queue = NULL;
 303         unsigned long rxtime;
 304         unsigned long rxcount;
 305         unsigned long txtime;
 306         unsigned long txcount;
 307
 308         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 309                 return -EOPNOTSUPP;
 310
 311         if (NULL == priv->phydev)
 312                 return -ENODEV;
 313
 314         rx_queue = priv->rx_queue[0];
 315         tx_queue = priv->tx_queue[0];
 316
 317         rxtime  = get_ictt_value(rx_queue->rxic);
 318         rxcount = get_icft_value(rx_queue->rxic);
 319         txtime  = get_ictt_value(tx_queue->txic);
 320         txcount = get_icft_value(tx_queue->txic);
 321         cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
 322         cvals->rx_max_coalesced_frames = rxcount;
 323
 324         cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
 325         cvals->tx_max_coalesced_frames = txcount;
 326
 327         cvals->use_adaptive_rx_coalesce = 0;
 328         cvals->use_adaptive_tx_coalesce = 0;
 329
 330         cvals->pkt_rate_low = 0;
 331         cvals->rx_coalesce_usecs_low = 0;
 332         cvals->rx_max_coalesced_frames_low = 0;
 333         cvals->tx_coalesce_usecs_low = 0;
 334         cvals->tx_max_coalesced_frames_low = 0;
 335
 336         /* When the packet rate is below pkt_rate_high but above
 337          * pkt_rate_low (both measured in packets per second) the
 338          * normal {rx,tx}_* coalescing parameters are used.
 339          */
 340
 341         /* When the packet rate is (measured in packets per second)
 342          * is above pkt_rate_high, the {rx,tx}_*_high parameters are
 343          * used.
 344          */
 345         cvals->pkt_rate_high = 0;
 346         cvals->rx_coalesce_usecs_high = 0;
 347         cvals->rx_max_coalesced_frames_high = 0;
 348         cvals->tx_coalesce_usecs_high = 0;
 349         cvals->tx_max_coalesced_frames_high = 0;
 350
 351         /* How often to do adaptive coalescing packet rate sampling,
 352          * measured in seconds.  Must not be zero.
 353          */
 354         cvals->rate_sample_interval = 0;
 355
 356         return 0;
 357 }
 358
 359 /* Change the coalescing values.
 360  * Both cvals->*_usecs and cvals->*_frames have to be > 0
 361  * in order for coalescing to be active
 362  */
 363 static int gfar_scoalesce(struct net_device *dev,
 364                           struct ethtool_coalesce *cvals)
 365 {
 366         struct gfar_private *priv = netdev_priv(dev);
 367         int i = 0;
 368
 369         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 370                 return -EOPNOTSUPP;
 371
 372         /* Set up rx coalescing */
 373         /* As of now, we will enable/disable coalescing for all
 374          * queues together in case of eTSEC2, this will be modified
 375          * along with the ethtool interface
 376          */
 377         if ((cvals->rx_coalesce_usecs == 0) ||
 378             (cvals->rx_max_coalesced_frames == 0)) {
 379                 for (i = 0; i < priv->num_rx_queues; i++)
 380                         priv->rx_queue[i]->rxcoalescing = 0;
 381         } else {
 382                 for (i = 0; i < priv->num_rx_queues; i++)
 383                         priv->rx_queue[i]->rxcoalescing = 1;
 384         }
 385
 386         if (NULL == priv->phydev)
 387                 return -ENODEV;
 388
 389         /* Check the bounds of the values */
 390         if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 391                 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
 392                             GFAR_MAX_COAL_USECS);
 393                 return -EINVAL;
 394         }
 395
 396         if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 397                 netdev_info(dev, "Coalescing is limited to %d frames\n",
 398                             GFAR_MAX_COAL_FRAMES);
 399                 return -EINVAL;
 400         }
 401
 402         for (i = 0; i < priv->num_rx_queues; i++) {
 403                 priv->rx_queue[i]->rxic = mk_ic_value(
 404                         cvals->rx_max_coalesced_frames,
 405                         gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
 406         }
 407
 408         /* Set up tx coalescing */
 409         if ((cvals->tx_coalesce_usecs == 0) ||
 410             (cvals->tx_max_coalesced_frames == 0)) {
 411                 for (i = 0; i < priv->num_tx_queues; i++)
 412                         priv->tx_queue[i]->txcoalescing = 0;
 413         } else {
 414                 for (i = 0; i < priv->num_tx_queues; i++)
 415                         priv->tx_queue[i]->txcoalescing = 1;
 416         }
 417
 418         /* Check the bounds of the values */
 419         if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 420                 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
 421                             GFAR_MAX_COAL_USECS);
 422                 return -EINVAL;
 423         }
 424
 425         if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 426                 netdev_info(dev, "Coalescing is limited to %d frames\n",
 427                             GFAR_MAX_COAL_FRAMES);
 428                 return -EINVAL;
 429         }
 430
 431         for (i = 0; i < priv->num_tx_queues; i++) {
 432                 priv->tx_queue[i]->txic = mk_ic_value(
 433                         cvals->tx_max_coalesced_frames,
 434                         gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
 435         }
 436
 437         gfar_configure_coalescing_all(priv);
 438
 439         return 0;
 440 }
 441
 442 /* Fills in rvals with the current ring parameters.  Currently,
 443  * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
 444  * jumbo are ignored by the driver */
 445 static void gfar_gringparam(struct net_device *dev,
 446                             struct ethtool_ringparam *rvals)
 447 {
 448         struct gfar_private *priv = netdev_priv(dev);
 449         struct gfar_priv_tx_q *tx_queue = NULL;
 450         struct gfar_priv_rx_q *rx_queue = NULL;
 451
 452         tx_queue = priv->tx_queue[0];
 453         rx_queue = priv->rx_queue[0];
 454
 455         rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
 456         rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
 457         rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
 458         rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
 459
 460         /* Values changeable by the user.  The valid values are
 461          * in the range 1 to the "*_max_pending" counterpart above.
 462          */
 463         rvals->rx_pending = rx_queue->rx_ring_size;
 464         rvals->rx_mini_pending = rx_queue->rx_ring_size;
 465         rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
 466         rvals->tx_pending = tx_queue->tx_ring_size;
 467 }
 468
 469 /* Change the current ring parameters, stopping the controller if
 470  * necessary so that we don't mess things up while we're in
 471  * motion.  We wait for the ring to be clean before reallocating
 472  * the rings.
 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 = 0;
 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
 497         if (dev->flags & IFF_UP) {
 498                 unsigned long flags;
 499
 500                 /* Halt TX and RX, and process the frames which
 501                  * have already been received
 502                  */
 503                 local_irq_save(flags);
 504                 lock_tx_qs(priv);
 505                 lock_rx_qs(priv);
 506
 507                 gfar_halt(dev);
 508
 509                 unlock_rx_qs(priv);
 510                 unlock_tx_qs(priv);
 511                 local_irq_restore(flags);
 512
 513                 for (i = 0; i < priv->num_rx_queues; i++)
 514                         gfar_clean_rx_ring(priv->rx_queue[i],
 515                                            priv->rx_queue[i]->rx_ring_size);
 516
 517                 /* Now we take down the rings to rebuild them */
 518                 stop_gfar(dev);
 519         }
 520
 521         /* Change the size */
 522         for (i = 0; i < priv->num_rx_queues; i++) {
 523                 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
 524                 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
 525                 priv->tx_queue[i]->num_txbdfree =
 526                         priv->tx_queue[i]->tx_ring_size;
 527         }
 528
 529         /* Rebuild the rings with the new size */
 530         if (dev->flags & IFF_UP) {
 531                 err = startup_gfar(dev);
 532                 netif_tx_wake_all_queues(dev);
 533         }
 534         return err;
 535 }
 536
 537 static void gfar_gpauseparam(struct net_device *dev,
 538                              struct ethtool_pauseparam *epause)
 539 {
 540         struct gfar_private *priv = netdev_priv(dev);
 541
 542         epause->autoneg = !!priv->pause_aneg_en;
 543         epause->rx_pause = !!priv->rx_pause_en;
 544         epause->tx_pause = !!priv->tx_pause_en;
 545 }
 546
 547 static int gfar_spauseparam(struct net_device *dev,
 548                             struct ethtool_pauseparam *epause)
 549 {
 550         struct gfar_private *priv = netdev_priv(dev);
 551         struct phy_device *phydev = priv->phydev;
 552         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 553         u32 oldadv, newadv;
 554
 555         if (!(phydev->supported & SUPPORTED_Pause) ||
 556             (!(phydev->supported & SUPPORTED_Asym_Pause) &&
 557              (epause->rx_pause != epause->tx_pause)))
 558                 return -EINVAL;
 559
 560         priv->rx_pause_en = priv->tx_pause_en = 0;
 561         if (epause->rx_pause) {
 562                 priv->rx_pause_en = 1;
 563
 564                 if (epause->tx_pause) {
 565                         priv->tx_pause_en = 1;
 566                         /* FLOW_CTRL_RX & TX */
 567                         newadv = ADVERTISED_Pause;
 568                 } else  /* FLOW_CTLR_RX */
 569                         newadv = ADVERTISED_Pause | ADVERTISED_Asym_Pause;
 570         } else if (epause->tx_pause) {
 571                 priv->tx_pause_en = 1;
 572                 /* FLOW_CTLR_TX */
 573                 newadv = ADVERTISED_Asym_Pause;
 574         } else
 575                 newadv = 0;
 576
 577         if (epause->autoneg)
 578                 priv->pause_aneg_en = 1;
 579         else
 580                 priv->pause_aneg_en = 0;
 581
 582         oldadv = phydev->advertising &
 583                 (ADVERTISED_Pause | ADVERTISED_Asym_Pause);
 584         if (oldadv != newadv) {
 585                 phydev->advertising &=
 586                         ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
 587                 phydev->advertising |= newadv;
 588                 if (phydev->autoneg)
 589                         /* inform link partner of our
 590                          * new flow ctrl settings
 591                          */
 592                         return phy_start_aneg(phydev);
 593
 594                 if (!epause->autoneg) {
 595                         u32 tempval;
 596                         tempval = gfar_read(&regs->maccfg1);
 597                         tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
 598                         if (priv->tx_pause_en)
 599                                 tempval |= MACCFG1_TX_FLOW;
 600                         if (priv->rx_pause_en)
 601                                 tempval |= MACCFG1_RX_FLOW;
 602                         gfar_write(&regs->maccfg1, tempval);
 603                 }
 604         }
 605
 606         return 0;
 607 }
 608
 609 int gfar_set_features(struct net_device *dev, netdev_features_t features)
 610 {
 611         struct gfar_private *priv = netdev_priv(dev);
 612         unsigned long flags;
 613         int err = 0, i = 0;
 614         netdev_features_t changed = dev->features ^ features;
 615
 616         if (changed & (NETIF_F_HW_VLAN_CTAG_TX|NETIF_F_HW_VLAN_CTAG_RX))
 617                 gfar_vlan_mode(dev, features);
 618
 619         if (!(changed & NETIF_F_RXCSUM))
 620                 return 0;
 621
 622         if (dev->flags & IFF_UP) {
 623                 /* Halt TX and RX, and process the frames which
 624                  * have already been received
 625                  */
 626                 local_irq_save(flags);
 627                 lock_tx_qs(priv);
 628                 lock_rx_qs(priv);
 629
 630                 gfar_halt(dev);
 631
 632                 unlock_tx_qs(priv);
 633                 unlock_rx_qs(priv);
 634                 local_irq_restore(flags);
 635
 636                 for (i = 0; i < priv->num_rx_queues; i++)
 637                         gfar_clean_rx_ring(priv->rx_queue[i],
 638                                            priv->rx_queue[i]->rx_ring_size);
 639
 640                 /* Now we take down the rings to rebuild them */
 641                 stop_gfar(dev);
 642
 643                 dev->features = features;
 644
 645                 err = startup_gfar(dev);
 646                 netif_tx_wake_all_queues(dev);
 647         }
 648         return err;
 649 }
 650
 651 static uint32_t gfar_get_msglevel(struct net_device *dev)
 652 {
 653         struct gfar_private *priv = netdev_priv(dev);
 654
 655         return priv->msg_enable;
 656 }
 657
 658 static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
 659 {
 660         struct gfar_private *priv = netdev_priv(dev);
 661
 662         priv->msg_enable = data;
 663 }
 664
 665 #ifdef CONFIG_PM
 666 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 667 {
 668         struct gfar_private *priv = netdev_priv(dev);
 669
 670         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) {
 671                 wol->supported = WAKE_MAGIC;
 672                 wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0;
 673         } else {
 674                 wol->supported = wol->wolopts = 0;
 675         }
 676 }
 677
 678 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 679 {
 680         struct gfar_private *priv = netdev_priv(dev);
 681         unsigned long flags;
 682
 683         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
 684             wol->wolopts != 0)
 685                 return -EINVAL;
 686
 687         if (wol->wolopts & ~WAKE_MAGIC)
 688                 return -EINVAL;
 689
 690         device_set_wakeup_enable(&dev->dev, wol->wolopts & WAKE_MAGIC);
 691
 692         spin_lock_irqsave(&priv->bflock, flags);
 693         priv->wol_en =  !!device_may_wakeup(&dev->dev);
 694         spin_unlock_irqrestore(&priv->bflock, flags);
 695
 696         return 0;
 697 }
 698 #endif
 699
 700 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
 701 {
 702         u32 fcr = 0x0, fpr = FPR_FILER_MASK;
 703
 704         if (ethflow & RXH_L2DA) {
 705                 fcr = RQFCR_PID_DAH |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                 fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
 713                       RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 714                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 715                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 716                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 717                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 718         }
 719
 720         if (ethflow & RXH_VLAN) {
 721                 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 722                       RQFCR_AND | RQFCR_HASHTBL_0;
 723                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 724                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 725                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 726                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 727         }
 728
 729         if (ethflow & RXH_IP_SRC) {
 730                 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 731                       RQFCR_AND | RQFCR_HASHTBL_0;
 732                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 733                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 734                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 735                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 736         }
 737
 738         if (ethflow & (RXH_IP_DST)) {
 739                 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 740                       RQFCR_AND | RQFCR_HASHTBL_0;
 741                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 742                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 743                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 744                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 745         }
 746
 747         if (ethflow & RXH_L3_PROTO) {
 748                 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 749                       RQFCR_AND | RQFCR_HASHTBL_0;
 750                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 751                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 752                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 753                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 754         }
 755
 756         if (ethflow & RXH_L4_B_0_1) {
 757                 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 758                       RQFCR_AND | RQFCR_HASHTBL_0;
 759                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 760                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 761                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 762                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 763         }
 764
 765         if (ethflow & RXH_L4_B_2_3) {
 766                 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 767                       RQFCR_AND | RQFCR_HASHTBL_0;
 768                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 769                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 770                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 771                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 772         }
 773 }
 774
 775 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
 776                                        u64 class)
 777 {
 778         unsigned int last_rule_idx = priv->cur_filer_idx;
 779         unsigned int cmp_rqfpr;
 780         unsigned int *local_rqfpr;
 781         unsigned int *local_rqfcr;
 782         int i = 0x0, k = 0x0;
 783         int j = MAX_FILER_IDX, l = 0x0;
 784         int ret = 1;
 785
 786         local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 787                                     GFP_KERNEL);
 788         local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 789                                     GFP_KERNEL);
 790         if (!local_rqfpr || !local_rqfcr) {
 791                 ret = 0;
 792                 goto err;
 793         }
 794
 795         switch (class) {
 796         case TCP_V4_FLOW:
 797                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
 798                 break;
 799         case UDP_V4_FLOW:
 800                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
 801                 break;
 802         case TCP_V6_FLOW:
 803                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
 804                 break;
 805         case UDP_V6_FLOW:
 806                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
 807                 break;
 808         default:
 809                 netdev_err(priv->ndev,
 810                            "Right now this class is not supported\n");
 811                 ret = 0;
 812                 goto err;
 813         }
 814
 815         for (i = 0; i < MAX_FILER_IDX + 1; i++) {
 816                 local_rqfpr[j] = priv->ftp_rqfpr[i];
 817                 local_rqfcr[j] = priv->ftp_rqfcr[i];
 818                 j--;
 819                 if ((priv->ftp_rqfcr[i] ==
 820                      (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
 821                     (priv->ftp_rqfpr[i] == cmp_rqfpr))
 822                         break;
 823         }
 824
 825         if (i == MAX_FILER_IDX + 1) {
 826                 netdev_err(priv->ndev,
 827                            "No parse rule found, can't create hash rules\n");
 828                 ret = 0;
 829                 goto err;
 830         }
 831
 832         /* If a match was found, then it begins the starting of a cluster rule
 833          * if it was already programmed, we need to overwrite these rules
 834          */
 835         for (l = i+1; l < MAX_FILER_IDX; l++) {
 836                 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 837                     !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
 838                         priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
 839                                              RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
 840                         priv->ftp_rqfpr[l] = FPR_FILER_MASK;
 841                         gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
 842                                          priv->ftp_rqfpr[l]);
 843                         break;
 844                 }
 845
 846                 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 847                         (priv->ftp_rqfcr[l] & RQFCR_AND))
 848                         continue;
 849                 else {
 850                         local_rqfpr[j] = priv->ftp_rqfpr[l];
 851                         local_rqfcr[j] = priv->ftp_rqfcr[l];
 852                         j--;
 853                 }
 854         }
 855
 856         priv->cur_filer_idx = l - 1;
 857         last_rule_idx = l;
 858
 859         /* hash rules */
 860         ethflow_to_filer_rules(priv, ethflow);
 861
 862         /* Write back the popped out rules again */
 863         for (k = j+1; k < MAX_FILER_IDX; k++) {
 864                 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
 865                 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
 866                 gfar_write_filer(priv, priv->cur_filer_idx,
 867                                  local_rqfcr[k], local_rqfpr[k]);
 868                 if (!priv->cur_filer_idx)
 869                         break;
 870                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 871         }
 872
 873 err:
 874         kfree(local_rqfcr);
 875         kfree(local_rqfpr);
 876         return ret;
 877 }
 878
 879 static int gfar_set_hash_opts(struct gfar_private *priv,
 880                               struct ethtool_rxnfc *cmd)
 881 {
 882         /* write the filer rules here */
 883         if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
 884                 return -EINVAL;
 885
 886         return 0;
 887 }
 888
 889 static int gfar_check_filer_hardware(struct gfar_private *priv)
 890 {
 891         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 892         u32 i;
 893
 894         /* Check if we are in FIFO mode */
 895         i = gfar_read(&regs->ecntrl);
 896         i &= ECNTRL_FIFM;
 897         if (i == ECNTRL_FIFM) {
 898                 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
 899                 i = gfar_read(&regs->rctrl);
 900                 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
 901                 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
 902                         netdev_info(priv->ndev,
 903                                     "Receive Queue Filtering enabled\n");
 904                 } else {
 905                         netdev_warn(priv->ndev,
 906                                     "Receive Queue Filtering disabled\n");
 907                         return -EOPNOTSUPP;
 908                 }
 909         }
 910         /* Or in standard mode */
 911         else {
 912                 i = gfar_read(&regs->rctrl);
 913                 i &= RCTRL_PRSDEP_MASK;
 914                 if (i == RCTRL_PRSDEP_MASK) {
 915                         netdev_info(priv->ndev,
 916                                     "Receive Queue Filtering enabled\n");
 917                 } else {
 918                         netdev_warn(priv->ndev,
 919                                     "Receive Queue Filtering disabled\n");
 920                         return -EOPNOTSUPP;
 921                 }
 922         }
 923
 924         /* Sets the properties for arbitrary filer rule
 925          * to the first 4 Layer 4 Bytes
 926          */
 927         gfar_write(&regs->rbifx, 0xC0C1C2C3);
 928         return 0;
 929 }
 930
 931 static int gfar_comp_asc(const void *a, const void *b)
 932 {
 933         return memcmp(a, b, 4);
 934 }
 935
 936 static int gfar_comp_desc(const void *a, const void *b)
 937 {
 938         return -memcmp(a, b, 4);
 939 }
 940
 941 static void gfar_swap(void *a, void *b, int size)
 942 {
 943         u32 *_a = a;
 944         u32 *_b = b;
 945
 946         swap(_a[0], _b[0]);
 947         swap(_a[1], _b[1]);
 948         swap(_a[2], _b[2]);
 949         swap(_a[3], _b[3]);
 950 }
 951
 952 /* Write a mask to filer cache */
 953 static void gfar_set_mask(u32 mask, struct filer_table *tab)
 954 {
 955         tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
 956         tab->fe[tab->index].prop = mask;
 957         tab->index++;
 958 }
 959
 960 /* Sets parse bits (e.g. IP or TCP) */
 961 static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
 962 {
 963         gfar_set_mask(mask, tab);
 964         tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
 965                                    RQFCR_AND;
 966         tab->fe[tab->index].prop = value;
 967         tab->index++;
 968 }
 969
 970 static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
 971                                        struct filer_table *tab)
 972 {
 973         gfar_set_mask(mask, tab);
 974         tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
 975         tab->fe[tab->index].prop = value;
 976         tab->index++;
 977 }
 978
 979 /* For setting a tuple of value and mask of type flag
 980  * Example:
 981  * IP-Src = 10.0.0.0/255.0.0.0
 982  * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
 983  *
 984  * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
 985  * For a don't care mask it gives us a 0
 986  *
 987  * The check if don't care and the mask adjustment if mask=0 is done for VLAN
 988  * and MAC stuff on an upper level (due to missing information on this level).
 989  * For these guys we can discard them if they are value=0 and mask=0.
 990  *
 991  * Further the all masks are one-padded for better hardware efficiency.
 992  */
 993 static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
 994                                struct filer_table *tab)
 995 {
 996         switch (flag) {
 997                 /* 3bit */
 998         case RQFCR_PID_PRI:
 999                 if (!(value | mask))
1000                         return;
1001                 mask |= RQFCR_PID_PRI_MASK;
1002                 break;
1003                 /* 8bit */
1004         case RQFCR_PID_L4P:
1005         case RQFCR_PID_TOS:
1006                 if (!~(mask | RQFCR_PID_L4P_MASK))
1007                         return;
1008                 if (!mask)
1009                         mask = ~0;
1010                 else
1011                         mask |= RQFCR_PID_L4P_MASK;
1012                 break;
1013                 /* 12bit */
1014         case RQFCR_PID_VID:
1015                 if (!(value | mask))
1016                         return;
1017                 mask |= RQFCR_PID_VID_MASK;
1018                 break;
1019                 /* 16bit */
1020         case RQFCR_PID_DPT:
1021         case RQFCR_PID_SPT:
1022         case RQFCR_PID_ETY:
1023                 if (!~(mask | RQFCR_PID_PORT_MASK))
1024                         return;
1025                 if (!mask)
1026                         mask = ~0;
1027                 else
1028                         mask |= RQFCR_PID_PORT_MASK;
1029                 break;
1030                 /* 24bit */
1031         case RQFCR_PID_DAH:
1032         case RQFCR_PID_DAL:
1033         case RQFCR_PID_SAH:
1034         case RQFCR_PID_SAL:
1035                 if (!(value | mask))
1036                         return;
1037                 mask |= RQFCR_PID_MAC_MASK;
1038                 break;
1039                 /* for all real 32bit masks */
1040         default:
1041                 if (!~mask)
1042                         return;
1043                 if (!mask)
1044                         mask = ~0;
1045                 break;
1046         }
1047         gfar_set_general_attribute(value, mask, flag, tab);
1048 }
1049
1050 /* Translates value and mask for UDP, TCP or SCTP */
1051 static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
1052                               struct ethtool_tcpip4_spec *mask,
1053                               struct filer_table *tab)
1054 {
1055         gfar_set_attribute(be32_to_cpu(value->ip4src),
1056                            be32_to_cpu(mask->ip4src),
1057                            RQFCR_PID_SIA, tab);
1058         gfar_set_attribute(be32_to_cpu(value->ip4dst),
1059                            be32_to_cpu(mask->ip4dst),
1060                            RQFCR_PID_DIA, tab);
1061         gfar_set_attribute(be16_to_cpu(value->pdst),
1062                            be16_to_cpu(mask->pdst),
1063                            RQFCR_PID_DPT, tab);
1064         gfar_set_attribute(be16_to_cpu(value->psrc),
1065                            be16_to_cpu(mask->psrc),
1066                            RQFCR_PID_SPT, tab);
1067         gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1068 }
1069
1070 /* Translates value and mask for RAW-IP4 */
1071 static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
1072                              struct ethtool_usrip4_spec *mask,
1073                              struct filer_table *tab)
1074 {
1075         gfar_set_attribute(be32_to_cpu(value->ip4src),
1076                            be32_to_cpu(mask->ip4src),
1077                            RQFCR_PID_SIA, tab);
1078         gfar_set_attribute(be32_to_cpu(value->ip4dst),
1079                            be32_to_cpu(mask->ip4dst),
1080                            RQFCR_PID_DIA, tab);
1081         gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1082         gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
1083         gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
1084                            be32_to_cpu(mask->l4_4_bytes),
1085                            RQFCR_PID_ARB, tab);
1086
1087 }
1088
1089 /* Translates value and mask for ETHER spec */
1090 static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
1091                            struct filer_table *tab)
1092 {
1093         u32 upper_temp_mask = 0;
1094         u32 lower_temp_mask = 0;
1095
1096         /* Source address */
1097         if (!is_broadcast_ether_addr(mask->h_source)) {
1098                 if (is_zero_ether_addr(mask->h_source)) {
1099                         upper_temp_mask = 0xFFFFFFFF;
1100                         lower_temp_mask = 0xFFFFFFFF;
1101                 } else {
1102                         upper_temp_mask = mask->h_source[0] << 16 |
1103                                           mask->h_source[1] << 8  |
1104                                           mask->h_source[2];
1105                         lower_temp_mask = mask->h_source[3] << 16 |
1106                                           mask->h_source[4] << 8  |
1107                                           mask->h_source[5];
1108                 }
1109                 /* Upper 24bit */
1110                 gfar_set_attribute(value->h_source[0] << 16 |
1111                                    value->h_source[1] << 8  |
1112                                    value->h_source[2],
1113                                    upper_temp_mask, RQFCR_PID_SAH, tab);
1114                 /* And the same for the lower part */
1115                 gfar_set_attribute(value->h_source[3] << 16 |
1116                                    value->h_source[4] << 8  |
1117                                    value->h_source[5],
1118                                    lower_temp_mask, RQFCR_PID_SAL, tab);
1119         }
1120         /* Destination address */
1121         if (!is_broadcast_ether_addr(mask->h_dest)) {
1122                 /* Special for destination is limited broadcast */
1123                 if ((is_broadcast_ether_addr(value->h_dest) &&
1124                     is_zero_ether_addr(mask->h_dest))) {
1125                         gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1126                 } else {
1127                         if (is_zero_ether_addr(mask->h_dest)) {
1128                                 upper_temp_mask = 0xFFFFFFFF;
1129                                 lower_temp_mask = 0xFFFFFFFF;
1130                         } else {
1131                                 upper_temp_mask = mask->h_dest[0] << 16 |
1132                                                   mask->h_dest[1] << 8  |
1133                                                   mask->h_dest[2];
1134                                 lower_temp_mask = mask->h_dest[3] << 16 |
1135                                                   mask->h_dest[4] << 8  |
1136                                                   mask->h_dest[5];
1137                         }
1138
1139                         /* Upper 24bit */
1140                         gfar_set_attribute(value->h_dest[0] << 16 |
1141                                            value->h_dest[1] << 8  |
1142                                            value->h_dest[2],
1143                                            upper_temp_mask, RQFCR_PID_DAH, tab);
1144                         /* And the same for the lower part */
1145                         gfar_set_attribute(value->h_dest[3] << 16 |
1146                                            value->h_dest[4] << 8  |
1147                                            value->h_dest[5],
1148                                            lower_temp_mask, RQFCR_PID_DAL, tab);
1149                 }
1150         }
1151
1152         gfar_set_attribute(be16_to_cpu(value->h_proto),
1153                            be16_to_cpu(mask->h_proto),
1154                            RQFCR_PID_ETY, tab);
1155 }
1156
1157 static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1158 {
1159         return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1160 }
1161
1162 static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1163 {
1164         return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1165 }
1166
1167 static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1168 {
1169         return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1170 }
1171
1172 static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1173 {
1174         return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1175 }
1176
1177 static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1178 {
1179         return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1180                 VLAN_PRIO_SHIFT;
1181 }
1182
1183 static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1184 {
1185         return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1186                 VLAN_PRIO_SHIFT;
1187 }
1188
1189 /* Convert a rule to binary filter format of gianfar */
1190 static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1191                                  struct filer_table *tab)
1192 {
1193         u32 vlan = 0, vlan_mask = 0;
1194         u32 id = 0, id_mask = 0;
1195         u32 cfi = 0, cfi_mask = 0;
1196         u32 prio = 0, prio_mask = 0;
1197         u32 old_index = tab->index;
1198
1199         /* Check if vlan is wanted */
1200         if ((rule->flow_type & FLOW_EXT) &&
1201             (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1202                 if (!rule->m_ext.vlan_tci)
1203                         rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1204
1205                 vlan = RQFPR_VLN;
1206                 vlan_mask = RQFPR_VLN;
1207
1208                 /* Separate the fields */
1209                 id = vlan_tci_vid(rule);
1210                 id_mask = vlan_tci_vidm(rule);
1211                 cfi = vlan_tci_cfi(rule);
1212                 cfi_mask = vlan_tci_cfim(rule);
1213                 prio = vlan_tci_prio(rule);
1214                 prio_mask = vlan_tci_priom(rule);
1215
1216                 if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
1217                         vlan |= RQFPR_CFI;
1218                         vlan_mask |= RQFPR_CFI;
1219                 } else if (cfi != VLAN_TAG_PRESENT &&
1220                            cfi_mask == VLAN_TAG_PRESENT) {
1221                         vlan_mask |= RQFPR_CFI;
1222                 }
1223         }
1224
1225         switch (rule->flow_type & ~FLOW_EXT) {
1226         case TCP_V4_FLOW:
1227                 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1228                                     RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1229                 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1230                                   &rule->m_u.tcp_ip4_spec, tab);
1231                 break;
1232         case UDP_V4_FLOW:
1233                 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1234                                     RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1235                 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1236                                   &rule->m_u.udp_ip4_spec, tab);
1237                 break;
1238         case SCTP_V4_FLOW:
1239                 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1240                                     tab);
1241                 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1242                 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1243                                   (struct ethtool_tcpip4_spec *)&rule->m_u,
1244                                   tab);
1245                 break;
1246         case IP_USER_FLOW:
1247                 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1248                                     tab);
1249                 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1250                                  (struct ethtool_usrip4_spec *) &rule->m_u,
1251                                  tab);
1252                 break;
1253         case ETHER_FLOW:
1254                 if (vlan)
1255                         gfar_set_parse_bits(vlan, vlan_mask, tab);
1256                 gfar_set_ether((struct ethhdr *) &rule->h_u,
1257                                (struct ethhdr *) &rule->m_u, tab);
1258                 break;
1259         default:
1260                 return -1;
1261         }
1262
1263         /* Set the vlan attributes in the end */
1264         if (vlan) {
1265                 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1266                 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1267         }
1268
1269         /* If there has been nothing written till now, it must be a default */
1270         if (tab->index == old_index) {
1271                 gfar_set_mask(0xFFFFFFFF, tab);
1272                 tab->fe[tab->index].ctrl = 0x20;
1273                 tab->fe[tab->index].prop = 0x0;
1274                 tab->index++;
1275         }
1276
1277         /* Remove last AND */
1278         tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1279
1280         /* Specify which queue to use or to drop */
1281         if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1282                 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1283         else
1284                 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1285
1286         /* Only big enough entries can be clustered */
1287         if (tab->index > (old_index + 2)) {
1288                 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1289                 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1290         }
1291
1292         /* In rare cases the cache can be full while there is
1293          * free space in hw
1294          */
1295         if (tab->index > MAX_FILER_CACHE_IDX - 1)
1296                 return -EBUSY;
1297
1298         return 0;
1299 }
1300
1301 /* Copy size filer entries */
1302 static void gfar_copy_filer_entries(struct gfar_filer_entry dst[0],
1303                                     struct gfar_filer_entry src[0], s32 size)
1304 {
1305         while (size > 0) {
1306                 size--;
1307                 dst[size].ctrl = src[size].ctrl;
1308                 dst[size].prop = src[size].prop;
1309         }
1310 }
1311
1312 /* Delete the contents of the filer-table between start and end
1313  * and collapse them
1314  */
1315 static int gfar_trim_filer_entries(u32 begin, u32 end, struct filer_table *tab)
1316 {
1317         int length;
1318
1319         if (end > MAX_FILER_CACHE_IDX || end < begin)
1320                 return -EINVAL;
1321
1322         end++;
1323         length = end - begin;
1324
1325         /* Copy */
1326         while (end < tab->index) {
1327                 tab->fe[begin].ctrl = tab->fe[end].ctrl;
1328                 tab->fe[begin++].prop = tab->fe[end++].prop;
1329
1330         }
1331         /* Fill up with don't cares */
1332         while (begin < tab->index) {
1333                 tab->fe[begin].ctrl = 0x60;
1334                 tab->fe[begin].prop = 0xFFFFFFFF;
1335                 begin++;
1336         }
1337
1338         tab->index -= length;
1339         return 0;
1340 }
1341
1342 /* Make space on the wanted location */
1343 static int gfar_expand_filer_entries(u32 begin, u32 length,
1344                                      struct filer_table *tab)
1345 {
1346         if (length == 0 || length + tab->index > MAX_FILER_CACHE_IDX ||
1347             begin > MAX_FILER_CACHE_IDX)
1348                 return -EINVAL;
1349
1350         gfar_copy_filer_entries(&(tab->fe[begin + length]), &(tab->fe[begin]),
1351                                 tab->index - length + 1);
1352
1353         tab->index += length;
1354         return 0;
1355 }
1356
1357 static int gfar_get_next_cluster_start(int start, struct filer_table *tab)
1358 {
1359         for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
1360              start++) {
1361                 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
1362                     (RQFCR_AND | RQFCR_CLE))
1363                         return start;
1364         }
1365         return -1;
1366 }
1367
1368 static int gfar_get_next_cluster_end(int start, struct filer_table *tab)
1369 {
1370         for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
1371              start++) {
1372                 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
1373                     (RQFCR_CLE))
1374                         return start;
1375         }
1376         return -1;
1377 }
1378
1379 /* Uses hardwares clustering option to reduce
1380  * the number of filer table entries
1381  */
1382 static void gfar_cluster_filer(struct filer_table *tab)
1383 {
1384         s32 i = -1, j, iend, jend;
1385
1386         while ((i = gfar_get_next_cluster_start(++i, tab)) != -1) {
1387                 j = i;
1388                 while ((j = gfar_get_next_cluster_start(++j, tab)) != -1) {
1389                         /* The cluster entries self and the previous one
1390                          * (a mask) must be identical!
1391                          */
1392                         if (tab->fe[i].ctrl != tab->fe[j].ctrl)
1393                                 break;
1394                         if (tab->fe[i].prop != tab->fe[j].prop)
1395                                 break;
1396                         if (tab->fe[i - 1].ctrl != tab->fe[j - 1].ctrl)
1397                                 break;
1398                         if (tab->fe[i - 1].prop != tab->fe[j - 1].prop)
1399                                 break;
1400                         iend = gfar_get_next_cluster_end(i, tab);
1401                         jend = gfar_get_next_cluster_end(j, tab);
1402                         if (jend == -1 || iend == -1)
1403                                 break;
1404
1405                         /* First we make some free space, where our cluster
1406                          * element should be. Then we copy it there and finally
1407                          * delete in from its old location.
1408                          */
1409                         if (gfar_expand_filer_entries(iend, (jend - j), tab) ==
1410                             -EINVAL)
1411                                 break;
1412
1413                         gfar_copy_filer_entries(&(tab->fe[iend + 1]),
1414                                                 &(tab->fe[jend + 1]), jend - j);
1415
1416                         if (gfar_trim_filer_entries(jend - 1,
1417                                                     jend + (jend - j),
1418                                                     tab) == -EINVAL)
1419                                 return;
1420
1421                         /* Mask out cluster bit */
1422                         tab->fe[iend].ctrl &= ~(RQFCR_CLE);
1423                 }
1424         }
1425 }
1426
1427 /* Swaps the masked bits of a1<>a2 and b1<>b2 */
1428 static void gfar_swap_bits(struct gfar_filer_entry *a1,
1429                            struct gfar_filer_entry *a2,
1430                            struct gfar_filer_entry *b1,
1431                            struct gfar_filer_entry *b2, u32 mask)
1432 {
1433         u32 temp[4];
1434         temp[0] = a1->ctrl & mask;
1435         temp[1] = a2->ctrl & mask;
1436         temp[2] = b1->ctrl & mask;
1437         temp[3] = b2->ctrl & mask;
1438
1439         a1->ctrl &= ~mask;
1440         a2->ctrl &= ~mask;
1441         b1->ctrl &= ~mask;
1442         b2->ctrl &= ~mask;
1443
1444         a1->ctrl |= temp[1];
1445         a2->ctrl |= temp[0];
1446         b1->ctrl |= temp[3];
1447         b2->ctrl |= temp[2];
1448 }
1449
1450 /* Generate a list consisting of masks values with their start and
1451  * end of validity and block as indicator for parts belonging
1452  * together (glued by ANDs) in mask_table
1453  */
1454 static u32 gfar_generate_mask_table(struct gfar_mask_entry *mask_table,
1455                                     struct filer_table *tab)
1456 {
1457         u32 i, and_index = 0, block_index = 1;
1458
1459         for (i = 0; i < tab->index; i++) {
1460
1461                 /* LSByte of control = 0 sets a mask */
1462                 if (!(tab->fe[i].ctrl & 0xF)) {
1463                         mask_table[and_index].mask = tab->fe[i].prop;
1464                         mask_table[and_index].start = i;
1465                         mask_table[and_index].block = block_index;
1466                         if (and_index >= 1)
1467                                 mask_table[and_index - 1].end = i - 1;
1468                         and_index++;
1469                 }
1470                 /* cluster starts and ends will be separated because they should
1471                  * hold their position
1472                  */
1473                 if (tab->fe[i].ctrl & RQFCR_CLE)
1474                         block_index++;
1475                 /* A not set AND indicates the end of a depended block */
1476                 if (!(tab->fe[i].ctrl & RQFCR_AND))
1477                         block_index++;
1478         }
1479
1480         mask_table[and_index - 1].end = i - 1;
1481
1482         return and_index;
1483 }
1484
1485 /* Sorts the entries of mask_table by the values of the masks.
1486  * Important: The 0xFF80 flags of the first and last entry of a
1487  * block must hold their position (which queue, CLusterEnable, ReJEct,
1488  * AND)
1489  */
1490 static void gfar_sort_mask_table(struct gfar_mask_entry *mask_table,
1491                                  struct filer_table *temp_table, u32 and_index)
1492 {
1493         /* Pointer to compare function (_asc or _desc) */
1494         int (*gfar_comp)(const void *, const void *);
1495
1496         u32 i, size = 0, start = 0, prev = 1;
1497         u32 old_first, old_last, new_first, new_last;
1498
1499         gfar_comp = &gfar_comp_desc;
1500
1501         for (i = 0; i < and_index; i++) {
1502                 if (prev != mask_table[i].block) {
1503                         old_first = mask_table[start].start + 1;
1504                         old_last = mask_table[i - 1].end;
1505                         sort(mask_table + start, size,
1506                              sizeof(struct gfar_mask_entry),
1507                              gfar_comp, &gfar_swap);
1508
1509                         /* Toggle order for every block. This makes the
1510                          * thing more efficient!
1511                          */
1512                         if (gfar_comp == gfar_comp_desc)
1513                                 gfar_comp = &gfar_comp_asc;
1514                         else
1515                                 gfar_comp = &gfar_comp_desc;
1516
1517                         new_first = mask_table[start].start + 1;
1518                         new_last = mask_table[i - 1].end;
1519
1520                         gfar_swap_bits(&temp_table->fe[new_first],
1521                                        &temp_table->fe[old_first],
1522                                        &temp_table->fe[new_last],
1523                                        &temp_table->fe[old_last],
1524                                        RQFCR_QUEUE | RQFCR_CLE |
1525                                        RQFCR_RJE | RQFCR_AND);
1526
1527                         start = i;
1528                         size = 0;
1529                 }
1530                 size++;
1531                 prev = mask_table[i].block;
1532         }
1533 }
1534
1535 /* Reduces the number of masks needed in the filer table to save entries
1536  * This is done by sorting the masks of a depended block. A depended block is
1537  * identified by gluing ANDs or CLE. The sorting order toggles after every
1538  * block. Of course entries in scope of a mask must change their location with
1539  * it.
1540  */
1541 static int gfar_optimize_filer_masks(struct filer_table *tab)
1542 {
1543         struct filer_table *temp_table;
1544         struct gfar_mask_entry *mask_table;
1545
1546         u32 and_index = 0, previous_mask = 0, i = 0, j = 0, size = 0;
1547         s32 ret = 0;
1548
1549         /* We need a copy of the filer table because
1550          * we want to change its order
1551          */
1552         temp_table = kmemdup(tab, sizeof(*temp_table), GFP_KERNEL);
1553         if (temp_table == NULL)
1554                 return -ENOMEM;
1555
1556         mask_table = kcalloc(MAX_FILER_CACHE_IDX / 2 + 1,
1557                              sizeof(struct gfar_mask_entry), GFP_KERNEL);
1558
1559         if (mask_table == NULL) {
1560                 ret = -ENOMEM;
1561                 goto end;
1562         }
1563
1564         and_index = gfar_generate_mask_table(mask_table, tab);
1565
1566         gfar_sort_mask_table(mask_table, temp_table, and_index);
1567
1568         /* Now we can copy the data from our duplicated filer table to
1569          * the real one in the order the mask table says
1570          */
1571         for (i = 0; i < and_index; i++) {
1572                 size = mask_table[i].end - mask_table[i].start + 1;
1573                 gfar_copy_filer_entries(&(tab->fe[j]),
1574                                 &(temp_table->fe[mask_table[i].start]), size);
1575                 j += size;
1576         }
1577
1578         /* And finally we just have to check for duplicated masks and drop the
1579          * second ones
1580          */
1581         for (i = 0; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1582                 if (tab->fe[i].ctrl == 0x80) {
1583                         previous_mask = i++;
1584                         break;
1585                 }
1586         }
1587         for (; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1588                 if (tab->fe[i].ctrl == 0x80) {
1589                         if (tab->fe[i].prop == tab->fe[previous_mask].prop) {
1590                                 /* Two identical ones found!
1591                                  * So drop the second one!
1592                                  */
1593                                 gfar_trim_filer_entries(i, i, tab);
1594                         } else
1595                                 /* Not identical! */
1596                                 previous_mask = i;
1597                 }
1598         }
1599
1600         kfree(mask_table);
1601 end:    kfree(temp_table);
1602         return ret;
1603 }
1604
1605 /* Write the bit-pattern from software's buffer to hardware registers */
1606 static int gfar_write_filer_table(struct gfar_private *priv,
1607                                   struct filer_table *tab)
1608 {
1609         u32 i = 0;
1610         if (tab->index > MAX_FILER_IDX - 1)
1611                 return -EBUSY;
1612
1613         /* Avoid inconsistent filer table to be processed */
1614         lock_rx_qs(priv);
1615
1616         /* Fill regular entries */
1617         for (; i < MAX_FILER_IDX - 1 && (tab->fe[i].ctrl | tab->fe[i].ctrl);
1618              i++)
1619                 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1620         /* Fill the rest with fall-troughs */
1621         for (; i < MAX_FILER_IDX - 1; i++)
1622                 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1623         /* Last entry must be default accept
1624          * because that's what people expect
1625          */
1626         gfar_write_filer(priv, i, 0x20, 0x0);
1627
1628         unlock_rx_qs(priv);
1629
1630         return 0;
1631 }
1632
1633 static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1634                                  struct gfar_private *priv)
1635 {
1636
1637         if (flow->flow_type & FLOW_EXT) {
1638                 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1639                         netdev_warn(priv->ndev,
1640                                     "User-specific data not supported!\n");
1641                 if (~flow->m_ext.vlan_etype)
1642                         netdev_warn(priv->ndev,
1643                                     "VLAN-etype not supported!\n");
1644         }
1645         if (flow->flow_type == IP_USER_FLOW)
1646                 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1647                         netdev_warn(priv->ndev,
1648                                     "IP-Version differing from IPv4 not supported!\n");
1649
1650         return 0;
1651 }
1652
1653 static int gfar_process_filer_changes(struct gfar_private *priv)
1654 {
1655         struct ethtool_flow_spec_container *j;
1656         struct filer_table *tab;
1657         s32 i = 0;
1658         s32 ret = 0;
1659
1660         /* So index is set to zero, too! */
1661         tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1662         if (tab == NULL)
1663                 return -ENOMEM;
1664
1665         /* Now convert the existing filer data from flow_spec into
1666          * filer tables binary format
1667          */
1668         list_for_each_entry(j, &priv->rx_list.list, list) {
1669                 ret = gfar_convert_to_filer(&j->fs, tab);
1670                 if (ret == -EBUSY) {
1671                         netdev_err(priv->ndev,
1672                                    "Rule not added: No free space!\n");
1673                         goto end;
1674                 }
1675                 if (ret == -1) {
1676                         netdev_err(priv->ndev,
1677                                    "Rule not added: Unsupported Flow-type!\n");
1678                         goto end;
1679                 }
1680         }
1681
1682         i = tab->index;
1683
1684         /* Optimizations to save entries */
1685         gfar_cluster_filer(tab);
1686         gfar_optimize_filer_masks(tab);
1687
1688         pr_debug("\tSummary:\n"
1689                  "\tData on hardware: %d\n"
1690                  "\tCompression rate: %d%%\n",
1691                  tab->index, 100 - (100 * tab->index) / i);
1692
1693         /* Write everything to hardware */
1694         ret = gfar_write_filer_table(priv, tab);
1695         if (ret == -EBUSY) {
1696                 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1697                 goto end;
1698         }
1699
1700 end:
1701         kfree(tab);
1702         return ret;
1703 }
1704
1705 static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1706 {
1707         u32 i = 0;
1708
1709         for (i = 0; i < sizeof(flow->m_u); i++)
1710                 flow->m_u.hdata[i] ^= 0xFF;
1711
1712         flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1713         flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1714         flow->m_ext.data[0] ^= cpu_to_be32(~0);
1715         flow->m_ext.data[1] ^= cpu_to_be32(~0);
1716 }
1717
1718 static int gfar_add_cls(struct gfar_private *priv,
1719                         struct ethtool_rx_flow_spec *flow)
1720 {
1721         struct ethtool_flow_spec_container *temp, *comp;
1722         int ret = 0;
1723
1724         temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1725         if (temp == NULL)
1726                 return -ENOMEM;
1727         memcpy(&temp->fs, flow, sizeof(temp->fs));
1728
1729         gfar_invert_masks(&temp->fs);
1730         ret = gfar_check_capability(&temp->fs, priv);
1731         if (ret)
1732                 goto clean_mem;
1733         /* Link in the new element at the right @location */
1734         if (list_empty(&priv->rx_list.list)) {
1735                 ret = gfar_check_filer_hardware(priv);
1736                 if (ret != 0)
1737                         goto clean_mem;
1738                 list_add(&temp->list, &priv->rx_list.list);
1739                 goto process;
1740         } else {
1741                 list_for_each_entry(comp, &priv->rx_list.list, list) {
1742                         if (comp->fs.location > flow->location) {
1743                                 list_add_tail(&temp->list, &comp->list);
1744                                 goto process;
1745                         }
1746                         if (comp->fs.location == flow->location) {
1747                                 netdev_err(priv->ndev,
1748                                            "Rule not added: ID %d not free!\n",
1749                                            flow->location);
1750                                 ret = -EBUSY;
1751                                 goto clean_mem;
1752                         }
1753                 }
1754                 list_add_tail(&temp->list, &priv->rx_list.list);
1755         }
1756
1757 process:
1758         ret = gfar_process_filer_changes(priv);
1759         if (ret)
1760                 goto clean_list;
1761         priv->rx_list.count++;
1762         return ret;
1763
1764 clean_list:
1765         list_del(&temp->list);
1766 clean_mem:
1767         kfree(temp);
1768         return ret;
1769 }
1770
1771 static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1772 {
1773         struct ethtool_flow_spec_container *comp;
1774         u32 ret = -EINVAL;
1775
1776         if (list_empty(&priv->rx_list.list))
1777                 return ret;
1778
1779         list_for_each_entry(comp, &priv->rx_list.list, list) {
1780                 if (comp->fs.location == loc) {
1781                         list_del(&comp->list);
1782                         kfree(comp);
1783                         priv->rx_list.count--;
1784                         gfar_process_filer_changes(priv);
1785                         ret = 0;
1786                         break;
1787                 }
1788         }
1789
1790         return ret;
1791 }
1792
1793 static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1794 {
1795         struct ethtool_flow_spec_container *comp;
1796         u32 ret = -EINVAL;
1797
1798         list_for_each_entry(comp, &priv->rx_list.list, list) {
1799                 if (comp->fs.location == cmd->fs.location) {
1800                         memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1801                         gfar_invert_masks(&cmd->fs);
1802                         ret = 0;
1803                         break;
1804                 }
1805         }
1806
1807         return ret;
1808 }
1809
1810 static int gfar_get_cls_all(struct gfar_private *priv,
1811                             struct ethtool_rxnfc *cmd, u32 *rule_locs)
1812 {
1813         struct ethtool_flow_spec_container *comp;
1814         u32 i = 0;
1815
1816         list_for_each_entry(comp, &priv->rx_list.list, list) {
1817                 if (i == cmd->rule_cnt)
1818                         return -EMSGSIZE;
1819                 rule_locs[i] = comp->fs.location;
1820                 i++;
1821         }
1822
1823         cmd->data = MAX_FILER_IDX;
1824         cmd->rule_cnt = i;
1825
1826         return 0;
1827 }
1828
1829 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1830 {
1831         struct gfar_private *priv = netdev_priv(dev);
1832         int ret = 0;
1833
1834         mutex_lock(&priv->rx_queue_access);
1835
1836         switch (cmd->cmd) {
1837         case ETHTOOL_SRXFH:
1838                 ret = gfar_set_hash_opts(priv, cmd);
1839                 break;
1840         case ETHTOOL_SRXCLSRLINS:
1841                 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1842                      cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1843                     cmd->fs.location >= MAX_FILER_IDX) {
1844                         ret = -EINVAL;
1845                         break;
1846                 }
1847                 ret = gfar_add_cls(priv, &cmd->fs);
1848                 break;
1849         case ETHTOOL_SRXCLSRLDEL:
1850                 ret = gfar_del_cls(priv, cmd->fs.location);
1851                 break;
1852         default:
1853                 ret = -EINVAL;
1854         }
1855
1856         mutex_unlock(&priv->rx_queue_access);
1857
1858         return ret;
1859 }
1860
1861 static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1862                         u32 *rule_locs)
1863 {
1864         struct gfar_private *priv = netdev_priv(dev);
1865         int ret = 0;
1866
1867         switch (cmd->cmd) {
1868         case ETHTOOL_GRXRINGS:
1869                 cmd->data = priv->num_rx_queues;
1870                 break;
1871         case ETHTOOL_GRXCLSRLCNT:
1872                 cmd->rule_cnt = priv->rx_list.count;
1873                 break;
1874         case ETHTOOL_GRXCLSRULE:
1875                 ret = gfar_get_cls(priv, cmd);
1876                 break;
1877         case ETHTOOL_GRXCLSRLALL:
1878                 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1879                 break;
1880         default:
1881                 ret = -EINVAL;
1882                 break;
1883         }
1884
1885         return ret;
1886 }
1887
1888 int gfar_phc_index = -1;
1889 EXPORT_SYMBOL(gfar_phc_index);
1890
1891 static int gfar_get_ts_info(struct net_device *dev,
1892                             struct ethtool_ts_info *info)
1893 {
1894         struct gfar_private *priv = netdev_priv(dev);
1895
1896         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1897                 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1898                                         SOF_TIMESTAMPING_SOFTWARE;
1899                 info->phc_index = -1;
1900                 return 0;
1901         }
1902         info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1903                                 SOF_TIMESTAMPING_RX_HARDWARE |
1904                                 SOF_TIMESTAMPING_RAW_HARDWARE;
1905         info->phc_index = gfar_phc_index;
1906         info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1907                          (1 << HWTSTAMP_TX_ON);
1908         info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1909                            (1 << HWTSTAMP_FILTER_ALL);
1910         return 0;
1911 }
1912
1913 const struct ethtool_ops gfar_ethtool_ops = {
1914         .get_settings = gfar_gsettings,
1915         .set_settings = gfar_ssettings,
1916         .get_drvinfo = gfar_gdrvinfo,
1917         .get_regs_len = gfar_reglen,
1918         .get_regs = gfar_get_regs,
1919         .get_link = ethtool_op_get_link,
1920         .get_coalesce = gfar_gcoalesce,
1921         .set_coalesce = gfar_scoalesce,
1922         .get_ringparam = gfar_gringparam,
1923         .set_ringparam = gfar_sringparam,
1924         .get_pauseparam = gfar_gpauseparam,
1925         .set_pauseparam = gfar_spauseparam,
1926         .get_strings = gfar_gstrings,
1927         .get_sset_count = gfar_sset_count,
1928         .get_ethtool_stats = gfar_fill_stats,
1929         .get_msglevel = gfar_get_msglevel,
1930         .set_msglevel = gfar_set_msglevel,
1931 #ifdef CONFIG_PM
1932         .get_wol = gfar_get_wol,
1933         .set_wol = gfar_set_wol,
1934 #endif
1935         .set_rxnfc = gfar_set_nfc,
1936         .get_rxnfc = gfar_get_nfc,
1937         .get_ts_info = gfar_get_ts_info,
1938 };