drivers/net/ethernet/freescale/gianfar_ethtool.c

   1 /*
   2  *  drivers/net/ethernet/freescale/gianfar_ethtool.c
   3  *
   4  *  Gianfar Ethernet Driver
   5  *  Ethtool support for Gianfar Enet
   6  *  Based on e1000 ethtool support
   7  *
   8  *  Author: Andy Fleming
   9  *  Maintainer: Kumar Gala
  10  *  Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
  11  *
  12  *  Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc.
  13  *
  14  *  This software may be used and distributed according to
  15  *  the terms of the GNU Public License, Version 2, incorporated herein
  16  *  by reference.
  17  */
  18
  19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  20
  21 #include <linux/kernel.h>
  22 #include <linux/string.h>
  23 #include <linux/errno.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/delay.h>
  26 #include <linux/netdevice.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/net_tstamp.h>
  29 #include <linux/skbuff.h>
  30 #include <linux/spinlock.h>
  31 #include <linux/mm.h>
  32
  33 #include <asm/io.h>
  34 #include <asm/irq.h>
  35 #include <asm/uaccess.h>
  36 #include <linux/module.h>
  37 #include <linux/crc32.h>
  38 #include <asm/types.h>
  39 #include <linux/ethtool.h>
  40 #include <linux/mii.h>
  41 #include <linux/phy.h>
  42 #include <linux/sort.h>
  43 #include <linux/if_vlan.h>
  44
  45 #include "gianfar.h"
  46
  47 #define GFAR_MAX_COAL_USECS 0xffff
  48 #define GFAR_MAX_COAL_FRAMES 0xff
  49 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
  50                             u64 *buf);
  51 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
  52 static int gfar_gcoalesce(struct net_device *dev,
  53                           struct ethtool_coalesce *cvals);
  54 static int gfar_scoalesce(struct net_device *dev,
  55                           struct ethtool_coalesce *cvals);
  56 static void gfar_gringparam(struct net_device *dev,
  57                             struct ethtool_ringparam *rvals);
  58 static int gfar_sringparam(struct net_device *dev,
  59                            struct ethtool_ringparam *rvals);
  60 static void gfar_gdrvinfo(struct net_device *dev,
  61                           struct ethtool_drvinfo *drvinfo);
  62
  63 static const char stat_gstrings[][ETH_GSTRING_LEN] = {
  64         /* extra stats */
  65         "rx-allocation-errors",
  66         "rx-large-frame-errors",
  67         "rx-short-frame-errors",
  68         "rx-non-octet-errors",
  69         "rx-crc-errors",
  70         "rx-overrun-errors",
  71         "rx-busy-errors",
  72         "rx-babbling-errors",
  73         "rx-truncated-frames",
  74         "ethernet-bus-error",
  75         "tx-babbling-errors",
  76         "tx-underrun-errors",
  77         "tx-timeout-errors",
  78         /* rmon stats */
  79         "tx-rx-64-frames",
  80         "tx-rx-65-127-frames",
  81         "tx-rx-128-255-frames",
  82         "tx-rx-256-511-frames",
  83         "tx-rx-512-1023-frames",
  84         "tx-rx-1024-1518-frames",
  85         "tx-rx-1519-1522-good-vlan",
  86         "rx-bytes",
  87         "rx-packets",
  88         "rx-fcs-errors",
  89         "receive-multicast-packet",
  90         "receive-broadcast-packet",
  91         "rx-control-frame-packets",
  92         "rx-pause-frame-packets",
  93         "rx-unknown-op-code",
  94         "rx-alignment-error",
  95         "rx-frame-length-error",
  96         "rx-code-error",
  97         "rx-carrier-sense-error",
  98         "rx-undersize-packets",
  99         "rx-oversize-packets",
 100         "rx-fragmented-frames",
 101         "rx-jabber-frames",
 102         "rx-dropped-frames",
 103         "tx-byte-counter",
 104         "tx-packets",
 105         "tx-multicast-packets",
 106         "tx-broadcast-packets",
 107         "tx-pause-control-frames",
 108         "tx-deferral-packets",
 109         "tx-excessive-deferral-packets",
 110         "tx-single-collision-packets",
 111         "tx-multiple-collision-packets",
 112         "tx-late-collision-packets",
 113         "tx-excessive-collision-packets",
 114         "tx-total-collision",
 115         "reserved",
 116         "tx-dropped-frames",
 117         "tx-jabber-frames",
 118         "tx-fcs-errors",
 119         "tx-control-frames",
 120         "tx-oversize-frames",
 121         "tx-undersize-frames",
 122         "tx-fragmented-frames",
 123 };
 124
 125 /* Fill in a buffer with the strings which correspond to the
 126  * stats */
 127 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
 128 {
 129         struct gfar_private *priv = netdev_priv(dev);
 130
 131         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
 132                 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
 133         else
 134                 memcpy(buf, stat_gstrings,
 135                        GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
 136 }
 137
 138 /* Fill in an array of 64-bit statistics from various sources.
 139  * This array will be appended to the end of the ethtool_stats
 140  * structure, and returned to user space
 141  */
 142 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
 143                             u64 *buf)
 144 {
 145         int i;
 146         struct gfar_private *priv = netdev_priv(dev);
 147         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 148         atomic64_t *extra = (atomic64_t *)&priv->extra_stats;
 149
 150         for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
 151                 buf[i] = atomic64_read(&extra[i]);
 152
 153         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
 154                 u32 __iomem *rmon = (u32 __iomem *) &regs->rmon;
 155
 156                 for (; i < GFAR_STATS_LEN; i++, rmon++)
 157                         buf[i] = (u64) gfar_read(rmon);
 158         }
 159 }
 160
 161 static int gfar_sset_count(struct net_device *dev, int sset)
 162 {
 163         struct gfar_private *priv = netdev_priv(dev);
 164
 165         switch (sset) {
 166         case ETH_SS_STATS:
 167                 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
 168                         return GFAR_STATS_LEN;
 169                 else
 170                         return GFAR_EXTRA_STATS_LEN;
 171         default:
 172                 return -EOPNOTSUPP;
 173         }
 174 }
 175
 176 /* Fills in the drvinfo structure with some basic info */
 177 static void gfar_gdrvinfo(struct net_device *dev,
 178                           struct ethtool_drvinfo *drvinfo)
 179 {
 180         strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
 181         strlcpy(drvinfo->version, gfar_driver_version,
 182                 sizeof(drvinfo->version));
 183         strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
 184         strlcpy(drvinfo->bus_info, "N/A", sizeof(drvinfo->bus_info));
 185         drvinfo->regdump_len = 0;
 186         drvinfo->eedump_len = 0;
 187 }
 188
 189
 190 static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
 191 {
 192         struct gfar_private *priv = netdev_priv(dev);
 193         struct phy_device *phydev = priv->phydev;
 194
 195         if (NULL == phydev)
 196                 return -ENODEV;
 197
 198         return phy_ethtool_sset(phydev, cmd);
 199 }
 200
 201
 202 /* Return the current settings in the ethtool_cmd structure */
 203 static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
 204 {
 205         struct gfar_private *priv = netdev_priv(dev);
 206         struct phy_device *phydev = priv->phydev;
 207         struct gfar_priv_rx_q *rx_queue = NULL;
 208         struct gfar_priv_tx_q *tx_queue = NULL;
 209
 210         if (NULL == phydev)
 211                 return -ENODEV;
 212         tx_queue = priv->tx_queue[0];
 213         rx_queue = priv->rx_queue[0];
 214
 215         /* etsec-1.7 and older versions have only one txic
 216          * and rxic regs although they support multiple queues */
 217         cmd->maxtxpkt = get_icft_value(tx_queue->txic);
 218         cmd->maxrxpkt = get_icft_value(rx_queue->rxic);
 219
 220         return phy_ethtool_gset(phydev, cmd);
 221 }
 222
 223 /* Return the length of the register structure */
 224 static int gfar_reglen(struct net_device *dev)
 225 {
 226         return sizeof (struct gfar);
 227 }
 228
 229 /* Return a dump of the GFAR register space */
 230 static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 231                           void *regbuf)
 232 {
 233         int i;
 234         struct gfar_private *priv = netdev_priv(dev);
 235         u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
 236         u32 *buf = (u32 *) regbuf;
 237
 238         for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
 239                 buf[i] = gfar_read(&theregs[i]);
 240 }
 241
 242 /* Convert microseconds to ethernet clock ticks, which changes
 243  * depending on what speed the controller is running at */
 244 static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
 245                                      unsigned int usecs)
 246 {
 247         unsigned int count;
 248
 249         /* The timer is different, depending on the interface speed */
 250         switch (priv->phydev->speed) {
 251         case SPEED_1000:
 252                 count = GFAR_GBIT_TIME;
 253                 break;
 254         case SPEED_100:
 255                 count = GFAR_100_TIME;
 256                 break;
 257         case SPEED_10:
 258         default:
 259                 count = GFAR_10_TIME;
 260                 break;
 261         }
 262
 263         /* Make sure we return a number greater than 0
 264          * if usecs > 0 */
 265         return (usecs * 1000 + count - 1) / count;
 266 }
 267
 268 /* Convert ethernet clock ticks to microseconds */
 269 static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
 270                                      unsigned int ticks)
 271 {
 272         unsigned int count;
 273
 274         /* The timer is different, depending on the interface speed */
 275         switch (priv->phydev->speed) {
 276         case SPEED_1000:
 277                 count = GFAR_GBIT_TIME;
 278                 break;
 279         case SPEED_100:
 280                 count = GFAR_100_TIME;
 281                 break;
 282         case SPEED_10:
 283         default:
 284                 count = GFAR_10_TIME;
 285                 break;
 286         }
 287
 288         /* Make sure we return a number greater than 0 */
 289         /* if ticks is > 0 */
 290         return (ticks * count) / 1000;
 291 }
 292
 293 /* Get the coalescing parameters, and put them in the cvals
 294  * structure.  */
 295 static int gfar_gcoalesce(struct net_device *dev,
 296                           struct ethtool_coalesce *cvals)
 297 {
 298         struct gfar_private *priv = netdev_priv(dev);
 299         struct gfar_priv_rx_q *rx_queue = NULL;
 300         struct gfar_priv_tx_q *tx_queue = NULL;
 301         unsigned long rxtime;
 302         unsigned long rxcount;
 303         unsigned long txtime;
 304         unsigned long txcount;
 305
 306         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 307                 return -EOPNOTSUPP;
 308
 309         if (NULL == priv->phydev)
 310                 return -ENODEV;
 311
 312         rx_queue = priv->rx_queue[0];
 313         tx_queue = priv->tx_queue[0];
 314
 315         rxtime  = get_ictt_value(rx_queue->rxic);
 316         rxcount = get_icft_value(rx_queue->rxic);
 317         txtime  = get_ictt_value(tx_queue->txic);
 318         txcount = get_icft_value(tx_queue->txic);
 319         cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
 320         cvals->rx_max_coalesced_frames = rxcount;
 321
 322         cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
 323         cvals->tx_max_coalesced_frames = txcount;
 324
 325         cvals->use_adaptive_rx_coalesce = 0;
 326         cvals->use_adaptive_tx_coalesce = 0;
 327
 328         cvals->pkt_rate_low = 0;
 329         cvals->rx_coalesce_usecs_low = 0;
 330         cvals->rx_max_coalesced_frames_low = 0;
 331         cvals->tx_coalesce_usecs_low = 0;
 332         cvals->tx_max_coalesced_frames_low = 0;
 333
 334         /* When the packet rate is below pkt_rate_high but above
 335          * pkt_rate_low (both measured in packets per second) the
 336          * normal {rx,tx}_* coalescing parameters are used.
 337          */
 338
 339         /* When the packet rate is (measured in packets per second)
 340          * is above pkt_rate_high, the {rx,tx}_*_high parameters are
 341          * used.
 342          */
 343         cvals->pkt_rate_high = 0;
 344         cvals->rx_coalesce_usecs_high = 0;
 345         cvals->rx_max_coalesced_frames_high = 0;
 346         cvals->tx_coalesce_usecs_high = 0;
 347         cvals->tx_max_coalesced_frames_high = 0;
 348
 349         /* How often to do adaptive coalescing packet rate sampling,
 350          * measured in seconds.  Must not be zero.
 351          */
 352         cvals->rate_sample_interval = 0;
 353
 354         return 0;
 355 }
 356
 357 /* Change the coalescing values.
 358  * Both cvals->*_usecs and cvals->*_frames have to be > 0
 359  * in order for coalescing to be active
 360  */
 361 static int gfar_scoalesce(struct net_device *dev,
 362                           struct ethtool_coalesce *cvals)
 363 {
 364         struct gfar_private *priv = netdev_priv(dev);
 365         int i, err = 0;
 366
 367         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 368                 return -EOPNOTSUPP;
 369
 370         if (NULL == priv->phydev)
 371                 return -ENODEV;
 372
 373         /* Check the bounds of the values */
 374         if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 375                 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
 376                             GFAR_MAX_COAL_USECS);
 377                 return -EINVAL;
 378         }
 379
 380         if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 381                 netdev_info(dev, "Coalescing is limited to %d frames\n",
 382                             GFAR_MAX_COAL_FRAMES);
 383                 return -EINVAL;
 384         }
 385
 386         /* Check the bounds of the values */
 387         if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 388                 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
 389                             GFAR_MAX_COAL_USECS);
 390                 return -EINVAL;
 391         }
 392
 393         if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 394                 netdev_info(dev, "Coalescing is limited to %d frames\n",
 395                             GFAR_MAX_COAL_FRAMES);
 396                 return -EINVAL;
 397         }
 398
 399         while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 400                 cpu_relax();
 401
 402         /* Set up rx coalescing */
 403         if ((cvals->rx_coalesce_usecs == 0) ||
 404             (cvals->rx_max_coalesced_frames == 0)) {
 405                 for (i = 0; i < priv->num_rx_queues; i++)
 406                         priv->rx_queue[i]->rxcoalescing = 0;
 407         } else {
 408                 for (i = 0; i < priv->num_rx_queues; i++)
 409                         priv->rx_queue[i]->rxcoalescing = 1;
 410         }
 411
 412         for (i = 0; i < priv->num_rx_queues; i++) {
 413                 priv->rx_queue[i]->rxic = mk_ic_value(
 414                         cvals->rx_max_coalesced_frames,
 415                         gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
 416         }
 417
 418         /* Set up tx coalescing */
 419         if ((cvals->tx_coalesce_usecs == 0) ||
 420             (cvals->tx_max_coalesced_frames == 0)) {
 421                 for (i = 0; i < priv->num_tx_queues; i++)
 422                         priv->tx_queue[i]->txcoalescing = 0;
 423         } else {
 424                 for (i = 0; i < priv->num_tx_queues; i++)
 425                         priv->tx_queue[i]->txcoalescing = 1;
 426         }
 427
 428         for (i = 0; i < priv->num_tx_queues; i++) {
 429                 priv->tx_queue[i]->txic = mk_ic_value(
 430                         cvals->tx_max_coalesced_frames,
 431                         gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
 432         }
 433
 434         if (dev->flags & IFF_UP) {
 435                 stop_gfar(dev);
 436                 err = startup_gfar(dev);
 437         } else {
 438                 gfar_mac_reset(priv);
 439         }
 440
 441         clear_bit_unlock(GFAR_RESETTING, &priv->state);
 442
 443         return err;
 444 }
 445
 446 /* Fills in rvals with the current ring parameters.  Currently,
 447  * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
 448  * jumbo are ignored by the driver */
 449 static void gfar_gringparam(struct net_device *dev,
 450                             struct ethtool_ringparam *rvals)
 451 {
 452         struct gfar_private *priv = netdev_priv(dev);
 453         struct gfar_priv_tx_q *tx_queue = NULL;
 454         struct gfar_priv_rx_q *rx_queue = NULL;
 455
 456         tx_queue = priv->tx_queue[0];
 457         rx_queue = priv->rx_queue[0];
 458
 459         rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
 460         rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
 461         rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
 462         rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
 463
 464         /* Values changeable by the user.  The valid values are
 465          * in the range 1 to the "*_max_pending" counterpart above.
 466          */
 467         rvals->rx_pending = rx_queue->rx_ring_size;
 468         rvals->rx_mini_pending = rx_queue->rx_ring_size;
 469         rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
 470         rvals->tx_pending = tx_queue->tx_ring_size;
 471 }
 472
 473 /* Change the current ring parameters, stopping the controller if
 474  * necessary so that we don't mess things up while we're in motion.
 475  */
 476 static int gfar_sringparam(struct net_device *dev,
 477                            struct ethtool_ringparam *rvals)
 478 {
 479         struct gfar_private *priv = netdev_priv(dev);
 480         int err = 0, i;
 481
 482         if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
 483                 return -EINVAL;
 484
 485         if (!is_power_of_2(rvals->rx_pending)) {
 486                 netdev_err(dev, "Ring sizes must be a power of 2\n");
 487                 return -EINVAL;
 488         }
 489
 490         if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
 491                 return -EINVAL;
 492
 493         if (!is_power_of_2(rvals->tx_pending)) {
 494                 netdev_err(dev, "Ring sizes must be a power of 2\n");
 495                 return -EINVAL;
 496         }
 497
 498         while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 499                 cpu_relax();
 500
 501         if (dev->flags & IFF_UP)
 502                 stop_gfar(dev);
 503
 504         /* Change the sizes */
 505         for (i = 0; i < priv->num_rx_queues; i++)
 506                 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
 507
 508         for (i = 0; i < priv->num_tx_queues; i++)
 509                 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
 510
 511         /* Rebuild the rings with the new size */
 512         if (dev->flags & IFF_UP)
 513                 err = startup_gfar(dev);
 514
 515         clear_bit_unlock(GFAR_RESETTING, &priv->state);
 516
 517         return err;
 518 }
 519
 520 static void gfar_gpauseparam(struct net_device *dev,
 521                              struct ethtool_pauseparam *epause)
 522 {
 523         struct gfar_private *priv = netdev_priv(dev);
 524
 525         epause->autoneg = !!priv->pause_aneg_en;
 526         epause->rx_pause = !!priv->rx_pause_en;
 527         epause->tx_pause = !!priv->tx_pause_en;
 528 }
 529
 530 static int gfar_spauseparam(struct net_device *dev,
 531                             struct ethtool_pauseparam *epause)
 532 {
 533         struct gfar_private *priv = netdev_priv(dev);
 534         struct phy_device *phydev = priv->phydev;
 535         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 536         u32 oldadv, newadv;
 537
 538         if (!phydev)
 539                 return -ENODEV;
 540
 541         if (!(phydev->supported & SUPPORTED_Pause) ||
 542             (!(phydev->supported & SUPPORTED_Asym_Pause) &&
 543              (epause->rx_pause != epause->tx_pause)))
 544                 return -EINVAL;
 545
 546         priv->rx_pause_en = priv->tx_pause_en = 0;
 547         if (epause->rx_pause) {
 548                 priv->rx_pause_en = 1;
 549
 550                 if (epause->tx_pause) {
 551                         priv->tx_pause_en = 1;
 552                         /* FLOW_CTRL_RX & TX */
 553                         newadv = ADVERTISED_Pause;
 554                 } else  /* FLOW_CTLR_RX */
 555                         newadv = ADVERTISED_Pause | ADVERTISED_Asym_Pause;
 556         } else if (epause->tx_pause) {
 557                 priv->tx_pause_en = 1;
 558                 /* FLOW_CTLR_TX */
 559                 newadv = ADVERTISED_Asym_Pause;
 560         } else
 561                 newadv = 0;
 562
 563         if (epause->autoneg)
 564                 priv->pause_aneg_en = 1;
 565         else
 566                 priv->pause_aneg_en = 0;
 567
 568         oldadv = phydev->advertising &
 569                 (ADVERTISED_Pause | ADVERTISED_Asym_Pause);
 570         if (oldadv != newadv) {
 571                 phydev->advertising &=
 572                         ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
 573                 phydev->advertising |= newadv;
 574                 if (phydev->autoneg)
 575                         /* inform link partner of our
 576                          * new flow ctrl settings
 577                          */
 578                         return phy_start_aneg(phydev);
 579
 580                 if (!epause->autoneg) {
 581                         u32 tempval;
 582                         tempval = gfar_read(&regs->maccfg1);
 583                         tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
 584
 585                         priv->tx_actual_en = 0;
 586                         if (priv->tx_pause_en) {
 587                                 priv->tx_actual_en = 1;
 588                                 tempval |= MACCFG1_TX_FLOW;
 589                         }
 590
 591                         if (priv->rx_pause_en)
 592                                 tempval |= MACCFG1_RX_FLOW;
 593                         gfar_write(&regs->maccfg1, tempval);
 594                 }
 595         }
 596
 597         return 0;
 598 }
 599
 600 int gfar_set_features(struct net_device *dev, netdev_features_t features)
 601 {
 602         netdev_features_t changed = dev->features ^ features;
 603         struct gfar_private *priv = netdev_priv(dev);
 604         int err = 0;
 605
 606         if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
 607                          NETIF_F_RXCSUM)))
 608                 return 0;
 609
 610         while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 611                 cpu_relax();
 612
 613         dev->features = features;
 614
 615         if (dev->flags & IFF_UP) {
 616                 /* Now we take down the rings to rebuild them */
 617                 stop_gfar(dev);
 618                 err = startup_gfar(dev);
 619         } else {
 620                 gfar_mac_reset(priv);
 621         }
 622
 623         clear_bit_unlock(GFAR_RESETTING, &priv->state);
 624
 625         return err;
 626 }
 627
 628 static uint32_t gfar_get_msglevel(struct net_device *dev)
 629 {
 630         struct gfar_private *priv = netdev_priv(dev);
 631
 632         return priv->msg_enable;
 633 }
 634
 635 static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
 636 {
 637         struct gfar_private *priv = netdev_priv(dev);
 638
 639         priv->msg_enable = data;
 640 }
 641
 642 #ifdef CONFIG_PM
 643 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 644 {
 645         struct gfar_private *priv = netdev_priv(dev);
 646
 647         wol->supported = 0;
 648         wol->wolopts = 0;
 649
 650         if (priv->wol_supported & GFAR_WOL_MAGIC)
 651                 wol->supported |= WAKE_MAGIC;
 652
 653         if (priv->wol_supported & GFAR_WOL_FILER_UCAST)
 654                 wol->supported |= WAKE_UCAST;
 655
 656         if (priv->wol_opts & GFAR_WOL_MAGIC)
 657                 wol->wolopts |= WAKE_MAGIC;
 658
 659         if (priv->wol_opts & GFAR_WOL_FILER_UCAST)
 660                 wol->wolopts |= WAKE_UCAST;
 661 }
 662
 663 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 664 {
 665         struct gfar_private *priv = netdev_priv(dev);
 666         u16 wol_opts = 0;
 667         int err;
 668
 669         if (!priv->wol_supported && wol->wolopts)
 670                 return -EINVAL;
 671
 672         if (wol->wolopts & ~(WAKE_MAGIC | WAKE_UCAST))
 673                 return -EINVAL;
 674
 675         if (wol->wolopts & WAKE_MAGIC) {
 676                 wol_opts |= GFAR_WOL_MAGIC;
 677         } else {
 678                 if (wol->wolopts & WAKE_UCAST)
 679                         wol_opts |= GFAR_WOL_FILER_UCAST;
 680         }
 681
 682         wol_opts &= priv->wol_supported;
 683         priv->wol_opts = 0;
 684
 685         err = device_set_wakeup_enable(priv->dev, wol_opts);
 686         if (err)
 687                 return err;
 688
 689         priv->wol_opts = wol_opts;
 690
 691         return 0;
 692 }
 693 #endif
 694
 695 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
 696 {
 697         u32 fcr = 0x0, fpr = FPR_FILER_MASK;
 698
 699         if (ethflow & RXH_L2DA) {
 700                 fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH |
 701                       RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 702                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 703                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 704                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 705                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 706
 707                 fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
 708                       RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 709                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 710                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 711                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 712                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 713         }
 714
 715         if (ethflow & RXH_VLAN) {
 716                 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 717                       RQFCR_AND | RQFCR_HASHTBL_0;
 718                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 719                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 720                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 721                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 722         }
 723
 724         if (ethflow & RXH_IP_SRC) {
 725                 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 726                       RQFCR_AND | RQFCR_HASHTBL_0;
 727                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 728                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 729                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 730                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 731         }
 732
 733         if (ethflow & (RXH_IP_DST)) {
 734                 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 735                       RQFCR_AND | RQFCR_HASHTBL_0;
 736                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 737                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 738                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 739                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 740         }
 741
 742         if (ethflow & RXH_L3_PROTO) {
 743                 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 744                       RQFCR_AND | RQFCR_HASHTBL_0;
 745                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 746                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 747                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 748                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 749         }
 750
 751         if (ethflow & RXH_L4_B_0_1) {
 752                 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 753                       RQFCR_AND | RQFCR_HASHTBL_0;
 754                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 755                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 756                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 757                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 758         }
 759
 760         if (ethflow & RXH_L4_B_2_3) {
 761                 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 762                       RQFCR_AND | RQFCR_HASHTBL_0;
 763                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 764                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 765                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 766                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 767         }
 768 }
 769
 770 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
 771                                        u64 class)
 772 {
 773         unsigned int last_rule_idx = priv->cur_filer_idx;
 774         unsigned int cmp_rqfpr;
 775         unsigned int *local_rqfpr;
 776         unsigned int *local_rqfcr;
 777         int i = 0x0, k = 0x0;
 778         int j = MAX_FILER_IDX, l = 0x0;
 779         int ret = 1;
 780
 781         local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 782                                     GFP_KERNEL);
 783         local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 784                                     GFP_KERNEL);
 785         if (!local_rqfpr || !local_rqfcr) {
 786                 ret = 0;
 787                 goto err;
 788         }
 789
 790         switch (class) {
 791         case TCP_V4_FLOW:
 792                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
 793                 break;
 794         case UDP_V4_FLOW:
 795                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
 796                 break;
 797         case TCP_V6_FLOW:
 798                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
 799                 break;
 800         case UDP_V6_FLOW:
 801                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
 802                 break;
 803         default:
 804                 netdev_err(priv->ndev,
 805                            "Right now this class is not supported\n");
 806                 ret = 0;
 807                 goto err;
 808         }
 809
 810         for (i = 0; i < MAX_FILER_IDX + 1; i++) {
 811                 local_rqfpr[j] = priv->ftp_rqfpr[i];
 812                 local_rqfcr[j] = priv->ftp_rqfcr[i];
 813                 j--;
 814                 if ((priv->ftp_rqfcr[i] ==
 815                      (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
 816                     (priv->ftp_rqfpr[i] == cmp_rqfpr))
 817                         break;
 818         }
 819
 820         if (i == MAX_FILER_IDX + 1) {
 821                 netdev_err(priv->ndev,
 822                            "No parse rule found, can't create hash rules\n");
 823                 ret = 0;
 824                 goto err;
 825         }
 826
 827         /* If a match was found, then it begins the starting of a cluster rule
 828          * if it was already programmed, we need to overwrite these rules
 829          */
 830         for (l = i+1; l < MAX_FILER_IDX; l++) {
 831                 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 832                     !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
 833                         priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
 834                                              RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
 835                         priv->ftp_rqfpr[l] = FPR_FILER_MASK;
 836                         gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
 837                                          priv->ftp_rqfpr[l]);
 838                         break;
 839                 }
 840
 841                 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 842                         (priv->ftp_rqfcr[l] & RQFCR_AND))
 843                         continue;
 844                 else {
 845                         local_rqfpr[j] = priv->ftp_rqfpr[l];
 846                         local_rqfcr[j] = priv->ftp_rqfcr[l];
 847                         j--;
 848                 }
 849         }
 850
 851         priv->cur_filer_idx = l - 1;
 852         last_rule_idx = l;
 853
 854         /* hash rules */
 855         ethflow_to_filer_rules(priv, ethflow);
 856
 857         /* Write back the popped out rules again */
 858         for (k = j+1; k < MAX_FILER_IDX; k++) {
 859                 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
 860                 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
 861                 gfar_write_filer(priv, priv->cur_filer_idx,
 862                                  local_rqfcr[k], local_rqfpr[k]);
 863                 if (!priv->cur_filer_idx)
 864                         break;
 865                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 866         }
 867
 868 err:
 869         kfree(local_rqfcr);
 870         kfree(local_rqfpr);
 871         return ret;
 872 }
 873
 874 static int gfar_set_hash_opts(struct gfar_private *priv,
 875                               struct ethtool_rxnfc *cmd)
 876 {
 877         /* write the filer rules here */
 878         if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
 879                 return -EINVAL;
 880
 881         return 0;
 882 }
 883
 884 static int gfar_check_filer_hardware(struct gfar_private *priv)
 885 {
 886         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 887         u32 i;
 888
 889         /* Check if we are in FIFO mode */
 890         i = gfar_read(&regs->ecntrl);
 891         i &= ECNTRL_FIFM;
 892         if (i == ECNTRL_FIFM) {
 893                 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
 894                 i = gfar_read(&regs->rctrl);
 895                 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
 896                 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
 897                         netdev_info(priv->ndev,
 898                                     "Receive Queue Filtering enabled\n");
 899                 } else {
 900                         netdev_warn(priv->ndev,
 901                                     "Receive Queue Filtering disabled\n");
 902                         return -EOPNOTSUPP;
 903                 }
 904         }
 905         /* Or in standard mode */
 906         else {
 907                 i = gfar_read(&regs->rctrl);
 908                 i &= RCTRL_PRSDEP_MASK;
 909                 if (i == RCTRL_PRSDEP_MASK) {
 910                         netdev_info(priv->ndev,
 911                                     "Receive Queue Filtering enabled\n");
 912                 } else {
 913                         netdev_warn(priv->ndev,
 914                                     "Receive Queue Filtering disabled\n");
 915                         return -EOPNOTSUPP;
 916                 }
 917         }
 918
 919         /* Sets the properties for arbitrary filer rule
 920          * to the first 4 Layer 4 Bytes
 921          */
 922         gfar_write(&regs->rbifx, 0xC0C1C2C3);
 923         return 0;
 924 }
 925
 926 /* Write a mask to filer cache */
 927 static void gfar_set_mask(u32 mask, struct filer_table *tab)
 928 {
 929         tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
 930         tab->fe[tab->index].prop = mask;
 931         tab->index++;
 932 }
 933
 934 /* Sets parse bits (e.g. IP or TCP) */
 935 static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
 936 {
 937         gfar_set_mask(mask, tab);
 938         tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
 939                                    RQFCR_AND;
 940         tab->fe[tab->index].prop = value;
 941         tab->index++;
 942 }
 943
 944 static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
 945                                        struct filer_table *tab)
 946 {
 947         gfar_set_mask(mask, tab);
 948         tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
 949         tab->fe[tab->index].prop = value;
 950         tab->index++;
 951 }
 952
 953 /* For setting a tuple of value and mask of type flag
 954  * Example:
 955  * IP-Src = 10.0.0.0/255.0.0.0
 956  * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
 957  *
 958  * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
 959  * For a don't care mask it gives us a 0
 960  *
 961  * The check if don't care and the mask adjustment if mask=0 is done for VLAN
 962  * and MAC stuff on an upper level (due to missing information on this level).
 963  * For these guys we can discard them if they are value=0 and mask=0.
 964  *
 965  * Further the all masks are one-padded for better hardware efficiency.
 966  */
 967 static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
 968                                struct filer_table *tab)
 969 {
 970         switch (flag) {
 971                 /* 3bit */
 972         case RQFCR_PID_PRI:
 973                 if (!(value | mask))
 974                         return;
 975                 mask |= RQFCR_PID_PRI_MASK;
 976                 break;
 977                 /* 8bit */
 978         case RQFCR_PID_L4P:
 979         case RQFCR_PID_TOS:
 980                 if (!~(mask | RQFCR_PID_L4P_MASK))
 981                         return;
 982                 if (!mask)
 983                         mask = ~0;
 984                 else
 985                         mask |= RQFCR_PID_L4P_MASK;
 986                 break;
 987                 /* 12bit */
 988         case RQFCR_PID_VID:
 989                 if (!(value | mask))
 990                         return;
 991                 mask |= RQFCR_PID_VID_MASK;
 992                 break;
 993                 /* 16bit */
 994         case RQFCR_PID_DPT:
 995         case RQFCR_PID_SPT:
 996         case RQFCR_PID_ETY:
 997                 if (!~(mask | RQFCR_PID_PORT_MASK))
 998                         return;
 999                 if (!mask)
1000                         mask = ~0;
1001                 else
1002                         mask |= RQFCR_PID_PORT_MASK;
1003                 break;
1004                 /* 24bit */
1005         case RQFCR_PID_DAH:
1006         case RQFCR_PID_DAL:
1007         case RQFCR_PID_SAH:
1008         case RQFCR_PID_SAL:
1009                 if (!(value | mask))
1010                         return;
1011                 mask |= RQFCR_PID_MAC_MASK;
1012                 break;
1013                 /* for all real 32bit masks */
1014         default:
1015                 if (!~mask)
1016                         return;
1017                 if (!mask)
1018                         mask = ~0;
1019                 break;
1020         }
1021         gfar_set_general_attribute(value, mask, flag, tab);
1022 }
1023
1024 /* Translates value and mask for UDP, TCP or SCTP */
1025 static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
1026                               struct ethtool_tcpip4_spec *mask,
1027                               struct filer_table *tab)
1028 {
1029         gfar_set_attribute(be32_to_cpu(value->ip4src),
1030                            be32_to_cpu(mask->ip4src),
1031                            RQFCR_PID_SIA, tab);
1032         gfar_set_attribute(be32_to_cpu(value->ip4dst),
1033                            be32_to_cpu(mask->ip4dst),
1034                            RQFCR_PID_DIA, tab);
1035         gfar_set_attribute(be16_to_cpu(value->pdst),
1036                            be16_to_cpu(mask->pdst),
1037                            RQFCR_PID_DPT, tab);
1038         gfar_set_attribute(be16_to_cpu(value->psrc),
1039                            be16_to_cpu(mask->psrc),
1040                            RQFCR_PID_SPT, tab);
1041         gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1042 }
1043
1044 /* Translates value and mask for RAW-IP4 */
1045 static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
1046                              struct ethtool_usrip4_spec *mask,
1047                              struct filer_table *tab)
1048 {
1049         gfar_set_attribute(be32_to_cpu(value->ip4src),
1050                            be32_to_cpu(mask->ip4src),
1051                            RQFCR_PID_SIA, tab);
1052         gfar_set_attribute(be32_to_cpu(value->ip4dst),
1053                            be32_to_cpu(mask->ip4dst),
1054                            RQFCR_PID_DIA, tab);
1055         gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1056         gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
1057         gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
1058                            be32_to_cpu(mask->l4_4_bytes),
1059                            RQFCR_PID_ARB, tab);
1060
1061 }
1062
1063 /* Translates value and mask for ETHER spec */
1064 static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
1065                            struct filer_table *tab)
1066 {
1067         u32 upper_temp_mask = 0;
1068         u32 lower_temp_mask = 0;
1069
1070         /* Source address */
1071         if (!is_broadcast_ether_addr(mask->h_source)) {
1072                 if (is_zero_ether_addr(mask->h_source)) {
1073                         upper_temp_mask = 0xFFFFFFFF;
1074                         lower_temp_mask = 0xFFFFFFFF;
1075                 } else {
1076                         upper_temp_mask = mask->h_source[0] << 16 |
1077                                           mask->h_source[1] << 8  |
1078                                           mask->h_source[2];
1079                         lower_temp_mask = mask->h_source[3] << 16 |
1080                                           mask->h_source[4] << 8  |
1081                                           mask->h_source[5];
1082                 }
1083                 /* Upper 24bit */
1084                 gfar_set_attribute(value->h_source[0] << 16 |
1085                                    value->h_source[1] << 8  |
1086                                    value->h_source[2],
1087                                    upper_temp_mask, RQFCR_PID_SAH, tab);
1088                 /* And the same for the lower part */
1089                 gfar_set_attribute(value->h_source[3] << 16 |
1090                                    value->h_source[4] << 8  |
1091                                    value->h_source[5],
1092                                    lower_temp_mask, RQFCR_PID_SAL, tab);
1093         }
1094         /* Destination address */
1095         if (!is_broadcast_ether_addr(mask->h_dest)) {
1096                 /* Special for destination is limited broadcast */
1097                 if ((is_broadcast_ether_addr(value->h_dest) &&
1098                     is_zero_ether_addr(mask->h_dest))) {
1099                         gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1100                 } else {
1101                         if (is_zero_ether_addr(mask->h_dest)) {
1102                                 upper_temp_mask = 0xFFFFFFFF;
1103                                 lower_temp_mask = 0xFFFFFFFF;
1104                         } else {
1105                                 upper_temp_mask = mask->h_dest[0] << 16 |
1106                                                   mask->h_dest[1] << 8  |
1107                                                   mask->h_dest[2];
1108                                 lower_temp_mask = mask->h_dest[3] << 16 |
1109                                                   mask->h_dest[4] << 8  |
1110                                                   mask->h_dest[5];
1111                         }
1112
1113                         /* Upper 24bit */
1114                         gfar_set_attribute(value->h_dest[0] << 16 |
1115                                            value->h_dest[1] << 8  |
1116                                            value->h_dest[2],
1117                                            upper_temp_mask, RQFCR_PID_DAH, tab);
1118                         /* And the same for the lower part */
1119                         gfar_set_attribute(value->h_dest[3] << 16 |
1120                                            value->h_dest[4] << 8  |
1121                                            value->h_dest[5],
1122                                            lower_temp_mask, RQFCR_PID_DAL, tab);
1123                 }
1124         }
1125
1126         gfar_set_attribute(be16_to_cpu(value->h_proto),
1127                            be16_to_cpu(mask->h_proto),
1128                            RQFCR_PID_ETY, tab);
1129 }
1130
1131 static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1132 {
1133         return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1134 }
1135
1136 static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1137 {
1138         return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1139 }
1140
1141 static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1142 {
1143         return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1144 }
1145
1146 static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1147 {
1148         return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1149 }
1150
1151 static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1152 {
1153         return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1154                 VLAN_PRIO_SHIFT;
1155 }
1156
1157 static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1158 {
1159         return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1160                 VLAN_PRIO_SHIFT;
1161 }
1162
1163 /* Convert a rule to binary filter format of gianfar */
1164 static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1165                                  struct filer_table *tab)
1166 {
1167         u32 vlan = 0, vlan_mask = 0;
1168         u32 id = 0, id_mask = 0;
1169         u32 cfi = 0, cfi_mask = 0;
1170         u32 prio = 0, prio_mask = 0;
1171         u32 old_index = tab->index;
1172
1173         /* Check if vlan is wanted */
1174         if ((rule->flow_type & FLOW_EXT) &&
1175             (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1176                 if (!rule->m_ext.vlan_tci)
1177                         rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1178
1179                 vlan = RQFPR_VLN;
1180                 vlan_mask = RQFPR_VLN;
1181
1182                 /* Separate the fields */
1183                 id = vlan_tci_vid(rule);
1184                 id_mask = vlan_tci_vidm(rule);
1185                 cfi = vlan_tci_cfi(rule);
1186                 cfi_mask = vlan_tci_cfim(rule);
1187                 prio = vlan_tci_prio(rule);
1188                 prio_mask = vlan_tci_priom(rule);
1189
1190                 if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
1191                         vlan |= RQFPR_CFI;
1192                         vlan_mask |= RQFPR_CFI;
1193                 } else if (cfi != VLAN_TAG_PRESENT &&
1194                            cfi_mask == VLAN_TAG_PRESENT) {
1195                         vlan_mask |= RQFPR_CFI;
1196                 }
1197         }
1198
1199         switch (rule->flow_type & ~FLOW_EXT) {
1200         case TCP_V4_FLOW:
1201                 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1202                                     RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1203                 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1204                                   &rule->m_u.tcp_ip4_spec, tab);
1205                 break;
1206         case UDP_V4_FLOW:
1207                 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1208                                     RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1209                 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1210                                   &rule->m_u.udp_ip4_spec, tab);
1211                 break;
1212         case SCTP_V4_FLOW:
1213                 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1214                                     tab);
1215                 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1216                 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1217                                   (struct ethtool_tcpip4_spec *)&rule->m_u,
1218                                   tab);
1219                 break;
1220         case IP_USER_FLOW:
1221                 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1222                                     tab);
1223                 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1224                                  (struct ethtool_usrip4_spec *) &rule->m_u,
1225                                  tab);
1226                 break;
1227         case ETHER_FLOW:
1228                 if (vlan)
1229                         gfar_set_parse_bits(vlan, vlan_mask, tab);
1230                 gfar_set_ether((struct ethhdr *) &rule->h_u,
1231                                (struct ethhdr *) &rule->m_u, tab);
1232                 break;
1233         default:
1234                 return -1;
1235         }
1236
1237         /* Set the vlan attributes in the end */
1238         if (vlan) {
1239                 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1240                 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1241         }
1242
1243         /* If there has been nothing written till now, it must be a default */
1244         if (tab->index == old_index) {
1245                 gfar_set_mask(0xFFFFFFFF, tab);
1246                 tab->fe[tab->index].ctrl = 0x20;
1247                 tab->fe[tab->index].prop = 0x0;
1248                 tab->index++;
1249         }
1250
1251         /* Remove last AND */
1252         tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1253
1254         /* Specify which queue to use or to drop */
1255         if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1256                 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1257         else
1258                 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1259
1260         /* Only big enough entries can be clustered */
1261         if (tab->index > (old_index + 2)) {
1262                 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1263                 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1264         }
1265
1266         /* In rare cases the cache can be full while there is
1267          * free space in hw
1268          */
1269         if (tab->index > MAX_FILER_CACHE_IDX - 1)
1270                 return -EBUSY;
1271
1272         return 0;
1273 }
1274
1275 /* Write the bit-pattern from software's buffer to hardware registers */
1276 static int gfar_write_filer_table(struct gfar_private *priv,
1277                                   struct filer_table *tab)
1278 {
1279         u32 i = 0;
1280         if (tab->index > MAX_FILER_IDX - 1)
1281                 return -EBUSY;
1282
1283         /* Fill regular entries */
1284         for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
1285                 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1286         /* Fill the rest with fall-troughs */
1287         for (; i < MAX_FILER_IDX; i++)
1288                 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1289         /* Last entry must be default accept
1290          * because that's what people expect
1291          */
1292         gfar_write_filer(priv, i, 0x20, 0x0);
1293
1294         return 0;
1295 }
1296
1297 static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1298                                  struct gfar_private *priv)
1299 {
1300
1301         if (flow->flow_type & FLOW_EXT) {
1302                 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1303                         netdev_warn(priv->ndev,
1304                                     "User-specific data not supported!\n");
1305                 if (~flow->m_ext.vlan_etype)
1306                         netdev_warn(priv->ndev,
1307                                     "VLAN-etype not supported!\n");
1308         }
1309         if (flow->flow_type == IP_USER_FLOW)
1310                 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1311                         netdev_warn(priv->ndev,
1312                                     "IP-Version differing from IPv4 not supported!\n");
1313
1314         return 0;
1315 }
1316
1317 static int gfar_process_filer_changes(struct gfar_private *priv)
1318 {
1319         struct ethtool_flow_spec_container *j;
1320         struct filer_table *tab;
1321         s32 ret = 0;
1322
1323         /* So index is set to zero, too! */
1324         tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1325         if (tab == NULL)
1326                 return -ENOMEM;
1327
1328         /* Now convert the existing filer data from flow_spec into
1329          * filer tables binary format
1330          */
1331         list_for_each_entry(j, &priv->rx_list.list, list) {
1332                 ret = gfar_convert_to_filer(&j->fs, tab);
1333                 if (ret == -EBUSY) {
1334                         netdev_err(priv->ndev,
1335                                    "Rule not added: No free space!\n");
1336                         goto end;
1337                 }
1338                 if (ret == -1) {
1339                         netdev_err(priv->ndev,
1340                                    "Rule not added: Unsupported Flow-type!\n");
1341                         goto end;
1342                 }
1343         }
1344
1345         /* Write everything to hardware */
1346         ret = gfar_write_filer_table(priv, tab);
1347         if (ret == -EBUSY) {
1348                 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1349                 goto end;
1350         }
1351
1352 end:
1353         kfree(tab);
1354         return ret;
1355 }
1356
1357 static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1358 {
1359         u32 i = 0;
1360
1361         for (i = 0; i < sizeof(flow->m_u); i++)
1362                 flow->m_u.hdata[i] ^= 0xFF;
1363
1364         flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1365         flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1366         flow->m_ext.data[0] ^= cpu_to_be32(~0);
1367         flow->m_ext.data[1] ^= cpu_to_be32(~0);
1368 }
1369
1370 static int gfar_add_cls(struct gfar_private *priv,
1371                         struct ethtool_rx_flow_spec *flow)
1372 {
1373         struct ethtool_flow_spec_container *temp, *comp;
1374         int ret = 0;
1375
1376         temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1377         if (temp == NULL)
1378                 return -ENOMEM;
1379         memcpy(&temp->fs, flow, sizeof(temp->fs));
1380
1381         gfar_invert_masks(&temp->fs);
1382         ret = gfar_check_capability(&temp->fs, priv);
1383         if (ret)
1384                 goto clean_mem;
1385         /* Link in the new element at the right @location */
1386         if (list_empty(&priv->rx_list.list)) {
1387                 ret = gfar_check_filer_hardware(priv);
1388                 if (ret != 0)
1389                         goto clean_mem;
1390                 list_add(&temp->list, &priv->rx_list.list);
1391                 goto process;
1392         } else {
1393                 list_for_each_entry(comp, &priv->rx_list.list, list) {
1394                         if (comp->fs.location > flow->location) {
1395                                 list_add_tail(&temp->list, &comp->list);
1396                                 goto process;
1397                         }
1398                         if (comp->fs.location == flow->location) {
1399                                 netdev_err(priv->ndev,
1400                                            "Rule not added: ID %d not free!\n",
1401                                            flow->location);
1402                                 ret = -EBUSY;
1403                                 goto clean_mem;
1404                         }
1405                 }
1406                 list_add_tail(&temp->list, &priv->rx_list.list);
1407         }
1408
1409 process:
1410         priv->rx_list.count++;
1411         ret = gfar_process_filer_changes(priv);
1412         if (ret)
1413                 goto clean_list;
1414         return ret;
1415
1416 clean_list:
1417         priv->rx_list.count--;
1418         list_del(&temp->list);
1419 clean_mem:
1420         kfree(temp);
1421         return ret;
1422 }
1423
1424 static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1425 {
1426         struct ethtool_flow_spec_container *comp;
1427         u32 ret = -EINVAL;
1428
1429         if (list_empty(&priv->rx_list.list))
1430                 return ret;
1431
1432         list_for_each_entry(comp, &priv->rx_list.list, list) {
1433                 if (comp->fs.location == loc) {
1434                         list_del(&comp->list);
1435                         kfree(comp);
1436                         priv->rx_list.count--;
1437                         gfar_process_filer_changes(priv);
1438                         ret = 0;
1439                         break;
1440                 }
1441         }
1442
1443         return ret;
1444 }
1445
1446 static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1447 {
1448         struct ethtool_flow_spec_container *comp;
1449         u32 ret = -EINVAL;
1450
1451         list_for_each_entry(comp, &priv->rx_list.list, list) {
1452                 if (comp->fs.location == cmd->fs.location) {
1453                         memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1454                         gfar_invert_masks(&cmd->fs);
1455                         ret = 0;
1456                         break;
1457                 }
1458         }
1459
1460         return ret;
1461 }
1462
1463 static int gfar_get_cls_all(struct gfar_private *priv,
1464                             struct ethtool_rxnfc *cmd, u32 *rule_locs)
1465 {
1466         struct ethtool_flow_spec_container *comp;
1467         u32 i = 0;
1468
1469         list_for_each_entry(comp, &priv->rx_list.list, list) {
1470                 if (i == cmd->rule_cnt)
1471                         return -EMSGSIZE;
1472                 rule_locs[i] = comp->fs.location;
1473                 i++;
1474         }
1475
1476         cmd->data = MAX_FILER_IDX;
1477         cmd->rule_cnt = i;
1478
1479         return 0;
1480 }
1481
1482 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1483 {
1484         struct gfar_private *priv = netdev_priv(dev);
1485         int ret = 0;
1486
1487         if (test_bit(GFAR_RESETTING, &priv->state))
1488                 return -EBUSY;
1489
1490         mutex_lock(&priv->rx_queue_access);
1491
1492         switch (cmd->cmd) {
1493         case ETHTOOL_SRXFH:
1494                 ret = gfar_set_hash_opts(priv, cmd);
1495                 break;
1496         case ETHTOOL_SRXCLSRLINS:
1497                 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1498                      cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1499                     cmd->fs.location >= MAX_FILER_IDX) {
1500                         ret = -EINVAL;
1501                         break;
1502                 }
1503                 ret = gfar_add_cls(priv, &cmd->fs);
1504                 break;
1505         case ETHTOOL_SRXCLSRLDEL:
1506                 ret = gfar_del_cls(priv, cmd->fs.location);
1507                 break;
1508         default:
1509                 ret = -EINVAL;
1510         }
1511
1512         mutex_unlock(&priv->rx_queue_access);
1513
1514         return ret;
1515 }
1516
1517 static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1518                         u32 *rule_locs)
1519 {
1520         struct gfar_private *priv = netdev_priv(dev);
1521         int ret = 0;
1522
1523         switch (cmd->cmd) {
1524         case ETHTOOL_GRXRINGS:
1525                 cmd->data = priv->num_rx_queues;
1526                 break;
1527         case ETHTOOL_GRXCLSRLCNT:
1528                 cmd->rule_cnt = priv->rx_list.count;
1529                 break;
1530         case ETHTOOL_GRXCLSRULE:
1531                 ret = gfar_get_cls(priv, cmd);
1532                 break;
1533         case ETHTOOL_GRXCLSRLALL:
1534                 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1535                 break;
1536         default:
1537                 ret = -EINVAL;
1538                 break;
1539         }
1540
1541         return ret;
1542 }
1543
1544 int gfar_phc_index = -1;
1545 EXPORT_SYMBOL(gfar_phc_index);
1546
1547 static int gfar_get_ts_info(struct net_device *dev,
1548                             struct ethtool_ts_info *info)
1549 {
1550         struct gfar_private *priv = netdev_priv(dev);
1551
1552         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1553                 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1554                                         SOF_TIMESTAMPING_SOFTWARE;
1555                 info->phc_index = -1;
1556                 return 0;
1557         }
1558         info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1559                                 SOF_TIMESTAMPING_RX_HARDWARE |
1560                                 SOF_TIMESTAMPING_RAW_HARDWARE;
1561         info->phc_index = gfar_phc_index;
1562         info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1563                          (1 << HWTSTAMP_TX_ON);
1564         info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1565                            (1 << HWTSTAMP_FILTER_ALL);
1566         return 0;
1567 }
1568
1569 const struct ethtool_ops gfar_ethtool_ops = {
1570         .get_settings = gfar_gsettings,
1571         .set_settings = gfar_ssettings,
1572         .get_drvinfo = gfar_gdrvinfo,
1573         .get_regs_len = gfar_reglen,
1574         .get_regs = gfar_get_regs,
1575         .get_link = ethtool_op_get_link,
1576         .get_coalesce = gfar_gcoalesce,
1577         .set_coalesce = gfar_scoalesce,
1578         .get_ringparam = gfar_gringparam,
1579         .set_ringparam = gfar_sringparam,
1580         .get_pauseparam = gfar_gpauseparam,
1581         .set_pauseparam = gfar_spauseparam,
1582         .get_strings = gfar_gstrings,
1583         .get_sset_count = gfar_sset_count,
1584         .get_ethtool_stats = gfar_fill_stats,
1585         .get_msglevel = gfar_get_msglevel,
1586         .set_msglevel = gfar_set_msglevel,
1587 #ifdef CONFIG_PM
1588         .get_wol = gfar_get_wol,
1589         .set_wol = gfar_set_wol,
1590 #endif
1591         .set_rxnfc = gfar_set_nfc,
1592         .get_rxnfc = gfar_get_nfc,
1593         .get_ts_info = gfar_get_ts_info,
1594 };