1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 *  drivers/net/ethernet/freescale/gianfar_ethtool.c
   4 *
   5 *  Gianfar Ethernet Driver
   6 *  Ethtool support for Gianfar Enet
   7 *  Based on e1000 ethtool support
   8 *
   9 *  Author: Andy Fleming
  10 *  Maintainer: Kumar Gala
  11 *  Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
  12 *
  13 *  Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc.
  14 */
  15
  16#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  17
  18#include <linux/kernel.h>
  19#include <linux/string.h>
  20#include <linux/errno.h>
  21#include <linux/interrupt.h>
  22#include <linux/delay.h>
  23#include <linux/netdevice.h>
  24#include <linux/etherdevice.h>
  25#include <linux/net_tstamp.h>
  26#include <linux/skbuff.h>
  27#include <linux/spinlock.h>
  28#include <linux/mm.h>
  29
  30#include <asm/io.h>
  31#include <asm/irq.h>
  32#include <linux/uaccess.h>
  33#include <linux/module.h>
  34#include <linux/crc32.h>
  35#include <asm/types.h>
  36#include <linux/ethtool.h>
  37#include <linux/mii.h>
  38#include <linux/phy.h>
  39#include <linux/sort.h>
  40#include <linux/if_vlan.h>
  41#include <linux/of.h>
  42#include <linux/of_platform.h>
  43#include <linux/platform_device.h>
  44#include <linux/fsl/ptp_qoriq.h>
  45
  46#include "gianfar.h"
  47
  48#define GFAR_MAX_COAL_USECS 0xffff
  49#define GFAR_MAX_COAL_FRAMES 0xff
  50
  51static const char stat_gstrings[][ETH_GSTRING_LEN] = {
  52	/* extra stats */
  53	"rx-allocation-errors",
  54	"rx-large-frame-errors",
  55	"rx-short-frame-errors",
  56	"rx-non-octet-errors",
  57	"rx-crc-errors",
  58	"rx-overrun-errors",
  59	"rx-busy-errors",
  60	"rx-babbling-errors",
  61	"rx-truncated-frames",
  62	"ethernet-bus-error",
  63	"tx-babbling-errors",
  64	"tx-underrun-errors",
  65	"tx-timeout-errors",
  66	/* rmon stats */
  67	"tx-rx-64-frames",
  68	"tx-rx-65-127-frames",
  69	"tx-rx-128-255-frames",
  70	"tx-rx-256-511-frames",
  71	"tx-rx-512-1023-frames",
  72	"tx-rx-1024-1518-frames",
  73	"tx-rx-1519-1522-good-vlan",
  74	"rx-bytes",
  75	"rx-packets",
  76	"rx-fcs-errors",
  77	"receive-multicast-packet",
  78	"receive-broadcast-packet",
  79	"rx-control-frame-packets",
  80	"rx-pause-frame-packets",
  81	"rx-unknown-op-code",
  82	"rx-alignment-error",
  83	"rx-frame-length-error",
  84	"rx-code-error",
  85	"rx-carrier-sense-error",
  86	"rx-undersize-packets",
  87	"rx-oversize-packets",
  88	"rx-fragmented-frames",
  89	"rx-jabber-frames",
  90	"rx-dropped-frames",
  91	"tx-byte-counter",
  92	"tx-packets",
  93	"tx-multicast-packets",
  94	"tx-broadcast-packets",
  95	"tx-pause-control-frames",
  96	"tx-deferral-packets",
  97	"tx-excessive-deferral-packets",
  98	"tx-single-collision-packets",
  99	"tx-multiple-collision-packets",
 100	"tx-late-collision-packets",
 101	"tx-excessive-collision-packets",
 102	"tx-total-collision",
 103	"reserved",
 104	"tx-dropped-frames",
 105	"tx-jabber-frames",
 106	"tx-fcs-errors",
 107	"tx-control-frames",
 108	"tx-oversize-frames",
 109	"tx-undersize-frames",
 110	"tx-fragmented-frames",
 111};
 112
 113/* Fill in a buffer with the strings which correspond to the
 114 * stats */
 115static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
 116{
 117	struct gfar_private *priv = netdev_priv(dev);
 118	int i;
 119
 120	if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
 121		for (i = 0; i < GFAR_STATS_LEN; i++)
 122			ethtool_puts(&buf, stat_gstrings[i]);
 123	else
 124		for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
 125			ethtool_puts(&buf, stat_gstrings[i]);
 126}
 127
 128/* Fill in an array of 64-bit statistics from various sources.
 129 * This array will be appended to the end of the ethtool_stats
 130 * structure, and returned to user space
 131 */
 132static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
 133			    u64 *buf)
 134{
 135	int i;
 136	struct gfar_private *priv = netdev_priv(dev);
 137	struct gfar __iomem *regs = priv->gfargrp[0].regs;
 138	atomic64_t *extra = (atomic64_t *)&priv->extra_stats;
 139
 140	for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
 141		buf[i] = atomic64_read(&extra[i]);
 142
 143	if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
 144		u32 __iomem *rmon = (u32 __iomem *) &regs->rmon;
 145
 146		for (; i < GFAR_STATS_LEN; i++, rmon++)
 147			buf[i] = (u64) gfar_read(rmon);
 148	}
 149}
 150
 151static int gfar_sset_count(struct net_device *dev, int sset)
 152{
 153	struct gfar_private *priv = netdev_priv(dev);
 154
 155	switch (sset) {
 156	case ETH_SS_STATS:
 157		if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
 158			return GFAR_STATS_LEN;
 159		else
 160			return GFAR_EXTRA_STATS_LEN;
 161	default:
 162		return -EOPNOTSUPP;
 163	}
 164}
 165
 166/* Fills in the drvinfo structure with some basic info */
 167static void gfar_gdrvinfo(struct net_device *dev,
 168			  struct ethtool_drvinfo *drvinfo)
 169{
 170	strscpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
 171}
 172
 173/* Return the length of the register structure */
 174static int gfar_reglen(struct net_device *dev)
 175{
 176	return sizeof (struct gfar);
 177}
 178
 179/* Return a dump of the GFAR register space */
 180static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 181			  void *regbuf)
 182{
 183	int i;
 184	struct gfar_private *priv = netdev_priv(dev);
 185	u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
 186	u32 *buf = (u32 *) regbuf;
 187
 188	for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
 189		buf[i] = gfar_read(&theregs[i]);
 190}
 191
 192/* Convert microseconds to ethernet clock ticks, which changes
 193 * depending on what speed the controller is running at */
 194static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
 195				     unsigned int usecs)
 196{
 197	struct net_device *ndev = priv->ndev;
 198	struct phy_device *phydev = ndev->phydev;
 199	unsigned int count;
 200
 201	/* The timer is different, depending on the interface speed */
 202	switch (phydev->speed) {
 203	case SPEED_1000:
 204		count = GFAR_GBIT_TIME;
 205		break;
 206	case SPEED_100:
 207		count = GFAR_100_TIME;
 208		break;
 209	case SPEED_10:
 210	default:
 211		count = GFAR_10_TIME;
 212		break;
 213	}
 214
 215	/* Make sure we return a number greater than 0
 216	 * if usecs > 0 */
 217	return DIV_ROUND_UP(usecs * 1000, count);
 218}
 219
 220/* Convert ethernet clock ticks to microseconds */
 221static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
 222				     unsigned int ticks)
 223{
 224	struct net_device *ndev = priv->ndev;
 225	struct phy_device *phydev = ndev->phydev;
 226	unsigned int count;
 227
 228	/* The timer is different, depending on the interface speed */
 229	switch (phydev->speed) {
 230	case SPEED_1000:
 231		count = GFAR_GBIT_TIME;
 232		break;
 233	case SPEED_100:
 234		count = GFAR_100_TIME;
 235		break;
 236	case SPEED_10:
 237	default:
 238		count = GFAR_10_TIME;
 239		break;
 240	}
 241
 242	/* Make sure we return a number greater than 0 */
 243	/* if ticks is > 0 */
 244	return (ticks * count) / 1000;
 245}
 246
 247/* Get the coalescing parameters, and put them in the cvals
 248 * structure.  */
 249static int gfar_gcoalesce(struct net_device *dev,
 250			  struct ethtool_coalesce *cvals,
 251			  struct kernel_ethtool_coalesce *kernel_coal,
 252			  struct netlink_ext_ack *extack)
 253{
 254	struct gfar_private *priv = netdev_priv(dev);
 255	struct gfar_priv_rx_q *rx_queue = NULL;
 256	struct gfar_priv_tx_q *tx_queue = NULL;
 257	unsigned long rxtime;
 258	unsigned long rxcount;
 259	unsigned long txtime;
 260	unsigned long txcount;
 261
 262	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 263		return -EOPNOTSUPP;
 264
 265	if (!dev->phydev)
 266		return -ENODEV;
 267
 268	rx_queue = priv->rx_queue[0];
 269	tx_queue = priv->tx_queue[0];
 270
 271	rxtime  = get_ictt_value(rx_queue->rxic);
 272	rxcount = get_icft_value(rx_queue->rxic);
 273	txtime  = get_ictt_value(tx_queue->txic);
 274	txcount = get_icft_value(tx_queue->txic);
 275	cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
 276	cvals->rx_max_coalesced_frames = rxcount;
 277
 278	cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
 279	cvals->tx_max_coalesced_frames = txcount;
 280
 281	return 0;
 282}
 283
 284/* Change the coalescing values.
 285 * Both cvals->*_usecs and cvals->*_frames have to be > 0
 286 * in order for coalescing to be active
 287 */
 288static int gfar_scoalesce(struct net_device *dev,
 289			  struct ethtool_coalesce *cvals,
 290			  struct kernel_ethtool_coalesce *kernel_coal,
 291			  struct netlink_ext_ack *extack)
 292{
 293	struct gfar_private *priv = netdev_priv(dev);
 294	int i, err = 0;
 295
 296	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 297		return -EOPNOTSUPP;
 298
 299	if (!dev->phydev)
 300		return -ENODEV;
 301
 302	/* Check the bounds of the values */
 303	if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 304		netdev_info(dev, "Coalescing is limited to %d microseconds\n",
 305			    GFAR_MAX_COAL_USECS);
 306		return -EINVAL;
 307	}
 308
 309	if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 310		netdev_info(dev, "Coalescing is limited to %d frames\n",
 311			    GFAR_MAX_COAL_FRAMES);
 312		return -EINVAL;
 313	}
 314
 315	/* Check the bounds of the values */
 316	if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 317		netdev_info(dev, "Coalescing is limited to %d microseconds\n",
 318			    GFAR_MAX_COAL_USECS);
 319		return -EINVAL;
 320	}
 321
 322	if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 323		netdev_info(dev, "Coalescing is limited to %d frames\n",
 324			    GFAR_MAX_COAL_FRAMES);
 325		return -EINVAL;
 326	}
 327
 328	while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 329		cpu_relax();
 330
 331	/* Set up rx coalescing */
 332	if ((cvals->rx_coalesce_usecs == 0) ||
 333	    (cvals->rx_max_coalesced_frames == 0)) {
 334		for (i = 0; i < priv->num_rx_queues; i++)
 335			priv->rx_queue[i]->rxcoalescing = 0;
 336	} else {
 337		for (i = 0; i < priv->num_rx_queues; i++)
 338			priv->rx_queue[i]->rxcoalescing = 1;
 339	}
 340
 341	for (i = 0; i < priv->num_rx_queues; i++) {
 342		priv->rx_queue[i]->rxic = mk_ic_value(
 343			cvals->rx_max_coalesced_frames,
 344			gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
 345	}
 346
 347	/* Set up tx coalescing */
 348	if ((cvals->tx_coalesce_usecs == 0) ||
 349	    (cvals->tx_max_coalesced_frames == 0)) {
 350		for (i = 0; i < priv->num_tx_queues; i++)
 351			priv->tx_queue[i]->txcoalescing = 0;
 352	} else {
 353		for (i = 0; i < priv->num_tx_queues; i++)
 354			priv->tx_queue[i]->txcoalescing = 1;
 355	}
 356
 357	for (i = 0; i < priv->num_tx_queues; i++) {
 358		priv->tx_queue[i]->txic = mk_ic_value(
 359			cvals->tx_max_coalesced_frames,
 360			gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
 361	}
 362
 363	if (dev->flags & IFF_UP) {
 364		stop_gfar(dev);
 365		err = startup_gfar(dev);
 366	} else {
 367		gfar_mac_reset(priv);
 368	}
 369
 370	clear_bit_unlock(GFAR_RESETTING, &priv->state);
 371
 372	return err;
 373}
 374
 375/* Fills in rvals with the current ring parameters.  Currently,
 376 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
 377 * jumbo are ignored by the driver */
 378static void gfar_gringparam(struct net_device *dev,
 379			    struct ethtool_ringparam *rvals,
 380			    struct kernel_ethtool_ringparam *kernel_rvals,
 381			    struct netlink_ext_ack *extack)
 382{
 383	struct gfar_private *priv = netdev_priv(dev);
 384	struct gfar_priv_tx_q *tx_queue = NULL;
 385	struct gfar_priv_rx_q *rx_queue = NULL;
 386
 387	tx_queue = priv->tx_queue[0];
 388	rx_queue = priv->rx_queue[0];
 389
 390	rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
 391	rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
 392	rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
 393	rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
 394
 395	/* Values changeable by the user.  The valid values are
 396	 * in the range 1 to the "*_max_pending" counterpart above.
 397	 */
 398	rvals->rx_pending = rx_queue->rx_ring_size;
 399	rvals->rx_mini_pending = rx_queue->rx_ring_size;
 400	rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
 401	rvals->tx_pending = tx_queue->tx_ring_size;
 402}
 403
 404/* Change the current ring parameters, stopping the controller if
 405 * necessary so that we don't mess things up while we're in motion.
 406 */
 407static int gfar_sringparam(struct net_device *dev,
 408			   struct ethtool_ringparam *rvals,
 409			   struct kernel_ethtool_ringparam *kernel_rvals,
 410			   struct netlink_ext_ack *extack)
 411{
 412	struct gfar_private *priv = netdev_priv(dev);
 413	int err = 0, i;
 414
 415	if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
 416		return -EINVAL;
 417
 418	if (!is_power_of_2(rvals->rx_pending)) {
 419		netdev_err(dev, "Ring sizes must be a power of 2\n");
 420		return -EINVAL;
 421	}
 422
 423	if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
 424		return -EINVAL;
 425
 426	if (!is_power_of_2(rvals->tx_pending)) {
 427		netdev_err(dev, "Ring sizes must be a power of 2\n");
 428		return -EINVAL;
 429	}
 430
 431	while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 432		cpu_relax();
 433
 434	if (dev->flags & IFF_UP)
 435		stop_gfar(dev);
 436
 437	/* Change the sizes */
 438	for (i = 0; i < priv->num_rx_queues; i++)
 439		priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
 440
 441	for (i = 0; i < priv->num_tx_queues; i++)
 442		priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
 443
 444	/* Rebuild the rings with the new size */
 445	if (dev->flags & IFF_UP)
 446		err = startup_gfar(dev);
 447
 448	clear_bit_unlock(GFAR_RESETTING, &priv->state);
 449
 450	return err;
 451}
 452
 453static void gfar_gpauseparam(struct net_device *dev,
 454			     struct ethtool_pauseparam *epause)
 455{
 456	struct gfar_private *priv = netdev_priv(dev);
 457
 458	epause->autoneg = !!priv->pause_aneg_en;
 459	epause->rx_pause = !!priv->rx_pause_en;
 460	epause->tx_pause = !!priv->tx_pause_en;
 461}
 462
 463static int gfar_spauseparam(struct net_device *dev,
 464			    struct ethtool_pauseparam *epause)
 465{
 466	struct gfar_private *priv = netdev_priv(dev);
 467	struct phy_device *phydev = dev->phydev;
 468	struct gfar __iomem *regs = priv->gfargrp[0].regs;
 469
 470	if (!phydev)
 471		return -ENODEV;
 472
 473	if (!phy_validate_pause(phydev, epause))
 474		return -EINVAL;
 475
 476	priv->rx_pause_en = priv->tx_pause_en = 0;
 477	phy_set_asym_pause(phydev, epause->rx_pause, epause->tx_pause);
 478	if (epause->rx_pause) {
 479		priv->rx_pause_en = 1;
 480
 481		if (epause->tx_pause) {
 482			priv->tx_pause_en = 1;
 483		}
 484	} else if (epause->tx_pause) {
 485		priv->tx_pause_en = 1;
 486	}
 487
 488	if (epause->autoneg)
 489		priv->pause_aneg_en = 1;
 490	else
 491		priv->pause_aneg_en = 0;
 492
 493	if (!epause->autoneg) {
 494		u32 tempval = gfar_read(&regs->maccfg1);
 495
 496		tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
 497
 498		priv->tx_actual_en = 0;
 499		if (priv->tx_pause_en) {
 500			priv->tx_actual_en = 1;
 501			tempval |= MACCFG1_TX_FLOW;
 502		}
 503
 504		if (priv->rx_pause_en)
 505			tempval |= MACCFG1_RX_FLOW;
 506		gfar_write(&regs->maccfg1, tempval);
 507	}
 508
 509	return 0;
 510}
 511
 512int gfar_set_features(struct net_device *dev, netdev_features_t features)
 513{
 514	netdev_features_t changed = dev->features ^ features;
 515	struct gfar_private *priv = netdev_priv(dev);
 516	int err = 0;
 517
 518	if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
 519			 NETIF_F_RXCSUM)))
 520		return 0;
 521
 522	while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 523		cpu_relax();
 524
 525	dev->features = features;
 526
 527	if (dev->flags & IFF_UP) {
 528		/* Now we take down the rings to rebuild them */
 529		stop_gfar(dev);
 530		err = startup_gfar(dev);
 531	} else {
 532		gfar_mac_reset(priv);
 533	}
 534
 535	clear_bit_unlock(GFAR_RESETTING, &priv->state);
 536
 537	return err;
 538}
 539
 540static uint32_t gfar_get_msglevel(struct net_device *dev)
 541{
 542	struct gfar_private *priv = netdev_priv(dev);
 543
 544	return priv->msg_enable;
 545}
 546
 547static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
 548{
 549	struct gfar_private *priv = netdev_priv(dev);
 550
 551	priv->msg_enable = data;
 552}
 553
 554#ifdef CONFIG_PM
 555static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 556{
 557	struct gfar_private *priv = netdev_priv(dev);
 558
 559	wol->supported = 0;
 560	wol->wolopts = 0;
 561
 562	if (priv->wol_supported & GFAR_WOL_MAGIC)
 563		wol->supported |= WAKE_MAGIC;
 564
 565	if (priv->wol_supported & GFAR_WOL_FILER_UCAST)
 566		wol->supported |= WAKE_UCAST;
 567
 568	if (priv->wol_opts & GFAR_WOL_MAGIC)
 569		wol->wolopts |= WAKE_MAGIC;
 570
 571	if (priv->wol_opts & GFAR_WOL_FILER_UCAST)
 572		wol->wolopts |= WAKE_UCAST;
 573}
 574
 575static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 576{
 577	struct gfar_private *priv = netdev_priv(dev);
 578	u16 wol_opts = 0;
 579	int err;
 580
 581	if (!priv->wol_supported && wol->wolopts)
 582		return -EINVAL;
 583
 584	if (wol->wolopts & ~(WAKE_MAGIC | WAKE_UCAST))
 585		return -EINVAL;
 586
 587	if (wol->wolopts & WAKE_MAGIC) {
 588		wol_opts |= GFAR_WOL_MAGIC;
 589	} else {
 590		if (wol->wolopts & WAKE_UCAST)
 591			wol_opts |= GFAR_WOL_FILER_UCAST;
 592	}
 593
 594	wol_opts &= priv->wol_supported;
 595	priv->wol_opts = 0;
 596
 597	err = device_set_wakeup_enable(priv->dev, wol_opts);
 598	if (err)
 599		return err;
 600
 601	priv->wol_opts = wol_opts;
 602
 603	return 0;
 604}
 605#endif
 606
 607static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
 608{
 609	u32 fcr = 0x0, fpr = FPR_FILER_MASK;
 610
 611	if (ethflow & RXH_L2DA) {
 612		fcr = RQFCR_PID_DAH | RQFCR_CMP_NOMATCH |
 613		      RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 614		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 615		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 616		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 617		priv->cur_filer_idx = priv->cur_filer_idx - 1;
 618
 619		fcr = RQFCR_PID_DAL | RQFCR_CMP_NOMATCH |
 620		      RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 621		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 622		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 623		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 624		priv->cur_filer_idx = priv->cur_filer_idx - 1;
 625	}
 626
 627	if (ethflow & RXH_VLAN) {
 628		fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 629		      RQFCR_AND | RQFCR_HASHTBL_0;
 630		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 631		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 632		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 633		priv->cur_filer_idx = priv->cur_filer_idx - 1;
 634	}
 635
 636	if (ethflow & RXH_IP_SRC) {
 637		fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 638		      RQFCR_AND | RQFCR_HASHTBL_0;
 639		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 640		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 641		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 642		priv->cur_filer_idx = priv->cur_filer_idx - 1;
 643	}
 644
 645	if (ethflow & (RXH_IP_DST)) {
 646		fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 647		      RQFCR_AND | RQFCR_HASHTBL_0;
 648		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 649		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 650		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 651		priv->cur_filer_idx = priv->cur_filer_idx - 1;
 652	}
 653
 654	if (ethflow & RXH_L3_PROTO) {
 655		fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 656		      RQFCR_AND | RQFCR_HASHTBL_0;
 657		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 658		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 659		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 660		priv->cur_filer_idx = priv->cur_filer_idx - 1;
 661	}
 662
 663	if (ethflow & RXH_L4_B_0_1) {
 664		fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 665		      RQFCR_AND | RQFCR_HASHTBL_0;
 666		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 667		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 668		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 669		priv->cur_filer_idx = priv->cur_filer_idx - 1;
 670	}
 671
 672	if (ethflow & RXH_L4_B_2_3) {
 673		fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 674		      RQFCR_AND | RQFCR_HASHTBL_0;
 675		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 676		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 677		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 678		priv->cur_filer_idx = priv->cur_filer_idx - 1;
 679	}
 680}
 681
 682static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
 683				       u64 class)
 684{
 685	unsigned int cmp_rqfpr;
 686	unsigned int *local_rqfpr;
 687	unsigned int *local_rqfcr;
 688	int i = 0x0, k = 0x0;
 689	int j = MAX_FILER_IDX, l = 0x0;
 690	int ret = 1;
 691
 692	local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 693				    GFP_KERNEL);
 694	local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 695				    GFP_KERNEL);
 696	if (!local_rqfpr || !local_rqfcr) {
 697		ret = 0;
 698		goto err;
 699	}
 700
 701	switch (class) {
 702	case TCP_V4_FLOW:
 703		cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
 704		break;
 705	case UDP_V4_FLOW:
 706		cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
 707		break;
 708	case TCP_V6_FLOW:
 709		cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
 710		break;
 711	case UDP_V6_FLOW:
 712		cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
 713		break;
 714	default:
 715		netdev_err(priv->ndev,
 716			   "Right now this class is not supported\n");
 717		ret = 0;
 718		goto err;
 719	}
 720
 721	for (i = 0; i < MAX_FILER_IDX + 1; i++) {
 722		local_rqfpr[j] = priv->ftp_rqfpr[i];
 723		local_rqfcr[j] = priv->ftp_rqfcr[i];
 724		j--;
 725		if ((priv->ftp_rqfcr[i] ==
 726		     (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
 727		    (priv->ftp_rqfpr[i] == cmp_rqfpr))
 728			break;
 729	}
 730
 731	if (i == MAX_FILER_IDX + 1) {
 732		netdev_err(priv->ndev,
 733			   "No parse rule found, can't create hash rules\n");
 734		ret = 0;
 735		goto err;
 736	}
 737
 738	/* If a match was found, then it begins the starting of a cluster rule
 739	 * if it was already programmed, we need to overwrite these rules
 740	 */
 741	for (l = i+1; l < MAX_FILER_IDX; l++) {
 742		if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 743		    !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
 744			priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
 745					     RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
 746			priv->ftp_rqfpr[l] = FPR_FILER_MASK;
 747			gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
 748					 priv->ftp_rqfpr[l]);
 749			break;
 750		}
 751
 752		if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 753			(priv->ftp_rqfcr[l] & RQFCR_AND))
 754			continue;
 755		else {
 756			local_rqfpr[j] = priv->ftp_rqfpr[l];
 757			local_rqfcr[j] = priv->ftp_rqfcr[l];
 758			j--;
 759		}
 760	}
 761
 762	priv->cur_filer_idx = l - 1;
 763
 764	/* hash rules */
 765	ethflow_to_filer_rules(priv, ethflow);
 766
 767	/* Write back the popped out rules again */
 768	for (k = j+1; k < MAX_FILER_IDX; k++) {
 769		priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
 770		priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
 771		gfar_write_filer(priv, priv->cur_filer_idx,
 772				 local_rqfcr[k], local_rqfpr[k]);
 773		if (!priv->cur_filer_idx)
 774			break;
 775		priv->cur_filer_idx = priv->cur_filer_idx - 1;
 776	}
 777
 778err:
 779	kfree(local_rqfcr);
 780	kfree(local_rqfpr);
 781	return ret;
 782}
 783
 784static int gfar_set_hash_opts(struct gfar_private *priv,
 785			      struct ethtool_rxnfc *cmd)
 786{
 787	/* write the filer rules here */
 788	if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
 789		return -EINVAL;
 790
 791	return 0;
 792}
 793
 794static int gfar_check_filer_hardware(struct gfar_private *priv)
 795{
 796	struct gfar __iomem *regs = priv->gfargrp[0].regs;
 797	u32 i;
 798
 799	/* Check if we are in FIFO mode */
 800	i = gfar_read(&regs->ecntrl);
 801	i &= ECNTRL_FIFM;
 802	if (i == ECNTRL_FIFM) {
 803		netdev_notice(priv->ndev, "Interface in FIFO mode\n");
 804		i = gfar_read(&regs->rctrl);
 805		i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
 806		if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
 807			netdev_info(priv->ndev,
 808				    "Receive Queue Filtering enabled\n");
 809		} else {
 810			netdev_warn(priv->ndev,
 811				    "Receive Queue Filtering disabled\n");
 812			return -EOPNOTSUPP;
 813		}
 814	}
 815	/* Or in standard mode */
 816	else {
 817		i = gfar_read(&regs->rctrl);
 818		i &= RCTRL_PRSDEP_MASK;
 819		if (i == RCTRL_PRSDEP_MASK) {
 820			netdev_info(priv->ndev,
 821				    "Receive Queue Filtering enabled\n");
 822		} else {
 823			netdev_warn(priv->ndev,
 824				    "Receive Queue Filtering disabled\n");
 825			return -EOPNOTSUPP;
 826		}
 827	}
 828
 829	/* Sets the properties for arbitrary filer rule
 830	 * to the first 4 Layer 4 Bytes
 831	 */
 832	gfar_write(&regs->rbifx, 0xC0C1C2C3);
 833	return 0;
 834}
 835
 836/* Write a mask to filer cache */
 837static void gfar_set_mask(u32 mask, struct filer_table *tab)
 838{
 839	tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
 840	tab->fe[tab->index].prop = mask;
 841	tab->index++;
 842}
 843
 844/* Sets parse bits (e.g. IP or TCP) */
 845static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
 846{
 847	gfar_set_mask(mask, tab);
 848	tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
 849				   RQFCR_AND;
 850	tab->fe[tab->index].prop = value;
 851	tab->index++;
 852}
 853
 854static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
 855				       struct filer_table *tab)
 856{
 857	gfar_set_mask(mask, tab);
 858	tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
 859	tab->fe[tab->index].prop = value;
 860	tab->index++;
 861}
 862
 863/* For setting a tuple of value and mask of type flag
 864 * Example:
 865 * IP-Src = 10.0.0.0/255.0.0.0
 866 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
 867 *
 868 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
 869 * For a don't care mask it gives us a 0
 870 *
 871 * The check if don't care and the mask adjustment if mask=0 is done for VLAN
 872 * and MAC stuff on an upper level (due to missing information on this level).
 873 * For these guys we can discard them if they are value=0 and mask=0.
 874 *
 875 * Further the all masks are one-padded for better hardware efficiency.
 876 */
 877static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
 878			       struct filer_table *tab)
 879{
 880	switch (flag) {
 881		/* 3bit */
 882	case RQFCR_PID_PRI:
 883		if (!(value | mask))
 884			return;
 885		mask |= RQFCR_PID_PRI_MASK;
 886		break;
 887		/* 8bit */
 888	case RQFCR_PID_L4P:
 889	case RQFCR_PID_TOS:
 890		if (!~(mask | RQFCR_PID_L4P_MASK))
 891			return;
 892		if (!mask)
 893			mask = ~0;
 894		else
 895			mask |= RQFCR_PID_L4P_MASK;
 896		break;
 897		/* 12bit */
 898	case RQFCR_PID_VID:
 899		if (!(value | mask))
 900			return;
 901		mask |= RQFCR_PID_VID_MASK;
 902		break;
 903		/* 16bit */
 904	case RQFCR_PID_DPT:
 905	case RQFCR_PID_SPT:
 906	case RQFCR_PID_ETY:
 907		if (!~(mask | RQFCR_PID_PORT_MASK))
 908			return;
 909		if (!mask)
 910			mask = ~0;
 911		else
 912			mask |= RQFCR_PID_PORT_MASK;
 913		break;
 914		/* 24bit */
 915	case RQFCR_PID_DAH:
 916	case RQFCR_PID_DAL:
 917	case RQFCR_PID_SAH:
 918	case RQFCR_PID_SAL:
 919		if (!(value | mask))
 920			return;
 921		mask |= RQFCR_PID_MAC_MASK;
 922		break;
 923		/* for all real 32bit masks */
 924	default:
 925		if (!~mask)
 926			return;
 927		if (!mask)
 928			mask = ~0;
 929		break;
 930	}
 931	gfar_set_general_attribute(value, mask, flag, tab);
 932}
 933
 934/* Translates value and mask for UDP, TCP or SCTP */
 935static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
 936			      struct ethtool_tcpip4_spec *mask,
 937			      struct filer_table *tab)
 938{
 939	gfar_set_attribute(be32_to_cpu(value->ip4src),
 940			   be32_to_cpu(mask->ip4src),
 941			   RQFCR_PID_SIA, tab);
 942	gfar_set_attribute(be32_to_cpu(value->ip4dst),
 943			   be32_to_cpu(mask->ip4dst),
 944			   RQFCR_PID_DIA, tab);
 945	gfar_set_attribute(be16_to_cpu(value->pdst),
 946			   be16_to_cpu(mask->pdst),
 947			   RQFCR_PID_DPT, tab);
 948	gfar_set_attribute(be16_to_cpu(value->psrc),
 949			   be16_to_cpu(mask->psrc),
 950			   RQFCR_PID_SPT, tab);
 951	gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
 952}
 953
 954/* Translates value and mask for RAW-IP4 */
 955static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
 956			     struct ethtool_usrip4_spec *mask,
 957			     struct filer_table *tab)
 958{
 959	gfar_set_attribute(be32_to_cpu(value->ip4src),
 960			   be32_to_cpu(mask->ip4src),
 961			   RQFCR_PID_SIA, tab);
 962	gfar_set_attribute(be32_to_cpu(value->ip4dst),
 963			   be32_to_cpu(mask->ip4dst),
 964			   RQFCR_PID_DIA, tab);
 965	gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
 966	gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
 967	gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
 968			   be32_to_cpu(mask->l4_4_bytes),
 969			   RQFCR_PID_ARB, tab);
 970
 971}
 972
 973/* Translates value and mask for ETHER spec */
 974static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
 975			   struct filer_table *tab)
 976{
 977	u32 upper_temp_mask = 0;
 978	u32 lower_temp_mask = 0;
 979
 980	/* Source address */
 981	if (!is_broadcast_ether_addr(mask->h_source)) {
 982		if (is_zero_ether_addr(mask->h_source)) {
 983			upper_temp_mask = 0xFFFFFFFF;
 984			lower_temp_mask = 0xFFFFFFFF;
 985		} else {
 986			upper_temp_mask = mask->h_source[0] << 16 |
 987					  mask->h_source[1] << 8  |
 988					  mask->h_source[2];
 989			lower_temp_mask = mask->h_source[3] << 16 |
 990					  mask->h_source[4] << 8  |
 991					  mask->h_source[5];
 992		}
 993		/* Upper 24bit */
 994		gfar_set_attribute(value->h_source[0] << 16 |
 995				   value->h_source[1] << 8  |
 996				   value->h_source[2],
 997				   upper_temp_mask, RQFCR_PID_SAH, tab);
 998		/* And the same for the lower part */
 999		gfar_set_attribute(value->h_source[3] << 16 |
1000				   value->h_source[4] << 8  |
1001				   value->h_source[5],
1002				   lower_temp_mask, RQFCR_PID_SAL, tab);
1003	}
1004	/* Destination address */
1005	if (!is_broadcast_ether_addr(mask->h_dest)) {
1006		/* Special for destination is limited broadcast */
1007		if ((is_broadcast_ether_addr(value->h_dest) &&
1008		    is_zero_ether_addr(mask->h_dest))) {
1009			gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1010		} else {
1011			if (is_zero_ether_addr(mask->h_dest)) {
1012				upper_temp_mask = 0xFFFFFFFF;
1013				lower_temp_mask = 0xFFFFFFFF;
1014			} else {
1015				upper_temp_mask = mask->h_dest[0] << 16 |
1016						  mask->h_dest[1] << 8  |
1017						  mask->h_dest[2];
1018				lower_temp_mask = mask->h_dest[3] << 16 |
1019						  mask->h_dest[4] << 8  |
1020						  mask->h_dest[5];
1021			}
1022
1023			/* Upper 24bit */
1024			gfar_set_attribute(value->h_dest[0] << 16 |
1025					   value->h_dest[1] << 8  |
1026					   value->h_dest[2],
1027					   upper_temp_mask, RQFCR_PID_DAH, tab);
1028			/* And the same for the lower part */
1029			gfar_set_attribute(value->h_dest[3] << 16 |
1030					   value->h_dest[4] << 8  |
1031					   value->h_dest[5],
1032					   lower_temp_mask, RQFCR_PID_DAL, tab);
1033		}
1034	}
1035
1036	gfar_set_attribute(be16_to_cpu(value->h_proto),
1037			   be16_to_cpu(mask->h_proto),
1038			   RQFCR_PID_ETY, tab);
1039}
1040
1041static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1042{
1043	return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1044}
1045
1046static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1047{
1048	return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1049}
1050
1051static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1052{
1053	return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1054}
1055
1056static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1057{
1058	return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1059}
1060
1061static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1062{
1063	return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1064		VLAN_PRIO_SHIFT;
1065}
1066
1067static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1068{
1069	return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1070		VLAN_PRIO_SHIFT;
1071}
1072
1073/* Convert a rule to binary filter format of gianfar */
1074static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1075				 struct filer_table *tab)
1076{
1077	u32 vlan = 0, vlan_mask = 0;
1078	u32 id = 0, id_mask = 0;
1079	u32 cfi = 0, cfi_mask = 0;
1080	u32 prio = 0, prio_mask = 0;
1081	u32 old_index = tab->index;
1082
1083	/* Check if vlan is wanted */
1084	if ((rule->flow_type & FLOW_EXT) &&
1085	    (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1086		if (!rule->m_ext.vlan_tci)
1087			rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1088
1089		vlan = RQFPR_VLN;
1090		vlan_mask = RQFPR_VLN;
1091
1092		/* Separate the fields */
1093		id = vlan_tci_vid(rule);
1094		id_mask = vlan_tci_vidm(rule);
1095		cfi = vlan_tci_cfi(rule);
1096		cfi_mask = vlan_tci_cfim(rule);
1097		prio = vlan_tci_prio(rule);
1098		prio_mask = vlan_tci_priom(rule);
1099
1100		if (cfi_mask) {
1101			if (cfi)
1102				vlan |= RQFPR_CFI;
1103			vlan_mask |= RQFPR_CFI;
1104		}
1105	}
1106
1107	switch (rule->flow_type & ~FLOW_EXT) {
1108	case TCP_V4_FLOW:
1109		gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1110				    RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1111		gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1112				  &rule->m_u.tcp_ip4_spec, tab);
1113		break;
1114	case UDP_V4_FLOW:
1115		gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1116				    RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1117		gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1118				  &rule->m_u.udp_ip4_spec, tab);
1119		break;
1120	case SCTP_V4_FLOW:
1121		gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1122				    tab);
1123		gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1124		gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1125				  (struct ethtool_tcpip4_spec *)&rule->m_u,
1126				  tab);
1127		break;
1128	case IP_USER_FLOW:
1129		gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1130				    tab);
1131		gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1132				 (struct ethtool_usrip4_spec *) &rule->m_u,
1133				 tab);
1134		break;
1135	case ETHER_FLOW:
1136		if (vlan)
1137			gfar_set_parse_bits(vlan, vlan_mask, tab);
1138		gfar_set_ether((struct ethhdr *) &rule->h_u,
1139			       (struct ethhdr *) &rule->m_u, tab);
1140		break;
1141	default:
1142		return -1;
1143	}
1144
1145	/* Set the vlan attributes in the end */
1146	if (vlan) {
1147		gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1148		gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1149	}
1150
1151	/* If there has been nothing written till now, it must be a default */
1152	if (tab->index == old_index) {
1153		gfar_set_mask(0xFFFFFFFF, tab);
1154		tab->fe[tab->index].ctrl = 0x20;
1155		tab->fe[tab->index].prop = 0x0;
1156		tab->index++;
1157	}
1158
1159	/* Remove last AND */
1160	tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1161
1162	/* Specify which queue to use or to drop */
1163	if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1164		tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1165	else
1166		tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1167
1168	/* Only big enough entries can be clustered */
1169	if (tab->index > (old_index + 2)) {
1170		tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1171		tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1172	}
1173
1174	/* In rare cases the cache can be full while there is
1175	 * free space in hw
1176	 */
1177	if (tab->index > MAX_FILER_CACHE_IDX - 1)
1178		return -EBUSY;
1179
1180	return 0;
1181}
1182
1183/* Write the bit-pattern from software's buffer to hardware registers */
1184static int gfar_write_filer_table(struct gfar_private *priv,
1185				  struct filer_table *tab)
1186{
1187	u32 i = 0;
1188	if (tab->index > MAX_FILER_IDX - 1)
1189		return -EBUSY;
1190
1191	/* Fill regular entries */
1192	for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
1193		gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1194	/* Fill the rest with fall-troughs */
1195	for (; i < MAX_FILER_IDX; i++)
1196		gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1197	/* Last entry must be default accept
1198	 * because that's what people expect
1199	 */
1200	gfar_write_filer(priv, i, 0x20, 0x0);
1201
1202	return 0;
1203}
1204
1205static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1206				 struct gfar_private *priv)
1207{
1208
1209	if (flow->flow_type & FLOW_EXT)	{
1210		if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1211			netdev_warn(priv->ndev,
1212				    "User-specific data not supported!\n");
1213		if (~flow->m_ext.vlan_etype)
1214			netdev_warn(priv->ndev,
1215				    "VLAN-etype not supported!\n");
1216	}
1217	if (flow->flow_type == IP_USER_FLOW)
1218		if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1219			netdev_warn(priv->ndev,
1220				    "IP-Version differing from IPv4 not supported!\n");
1221
1222	return 0;
1223}
1224
1225static int gfar_process_filer_changes(struct gfar_private *priv)
1226{
1227	struct ethtool_flow_spec_container *j;
1228	struct filer_table *tab;
1229	s32 ret = 0;
1230
1231	/* So index is set to zero, too! */
1232	tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1233	if (tab == NULL)
1234		return -ENOMEM;
1235
1236	/* Now convert the existing filer data from flow_spec into
1237	 * filer tables binary format
1238	 */
1239	list_for_each_entry(j, &priv->rx_list.list, list) {
1240		ret = gfar_convert_to_filer(&j->fs, tab);
1241		if (ret == -EBUSY) {
1242			netdev_err(priv->ndev,
1243				   "Rule not added: No free space!\n");
1244			goto end;
1245		}
1246		if (ret == -1) {
1247			netdev_err(priv->ndev,
1248				   "Rule not added: Unsupported Flow-type!\n");
1249			goto end;
1250		}
1251	}
1252
1253	/* Write everything to hardware */
1254	ret = gfar_write_filer_table(priv, tab);
1255	if (ret == -EBUSY) {
1256		netdev_err(priv->ndev, "Rule not added: No free space!\n");
1257		goto end;
1258	}
1259
1260end:
1261	kfree(tab);
1262	return ret;
1263}
1264
1265static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1266{
1267	u32 i = 0;
1268
1269	for (i = 0; i < sizeof(flow->m_u); i++)
1270		flow->m_u.hdata[i] ^= 0xFF;
1271
1272	flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1273	flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1274	flow->m_ext.data[0] ^= cpu_to_be32(~0);
1275	flow->m_ext.data[1] ^= cpu_to_be32(~0);
1276}
1277
1278static int gfar_add_cls(struct gfar_private *priv,
1279			struct ethtool_rx_flow_spec *flow)
1280{
1281	struct ethtool_flow_spec_container *temp, *comp;
1282	int ret = 0;
1283
1284	temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1285	if (temp == NULL)
1286		return -ENOMEM;
1287	memcpy(&temp->fs, flow, sizeof(temp->fs));
1288
1289	gfar_invert_masks(&temp->fs);
1290	ret = gfar_check_capability(&temp->fs, priv);
1291	if (ret)
1292		goto clean_mem;
1293	/* Link in the new element at the right @location */
1294	if (list_empty(&priv->rx_list.list)) {
1295		ret = gfar_check_filer_hardware(priv);
1296		if (ret != 0)
1297			goto clean_mem;
1298		list_add(&temp->list, &priv->rx_list.list);
1299		goto process;
1300	} else {
1301		list_for_each_entry(comp, &priv->rx_list.list, list) {
1302			if (comp->fs.location > flow->location) {
1303				list_add_tail(&temp->list, &comp->list);
1304				goto process;
1305			}
1306			if (comp->fs.location == flow->location) {
1307				netdev_err(priv->ndev,
1308					   "Rule not added: ID %d not free!\n",
1309					   flow->location);
1310				ret = -EBUSY;
1311				goto clean_mem;
1312			}
1313		}
1314		list_add_tail(&temp->list, &priv->rx_list.list);
1315	}
1316
1317process:
1318	priv->rx_list.count++;
1319	ret = gfar_process_filer_changes(priv);
1320	if (ret)
1321		goto clean_list;
1322	return ret;
1323
1324clean_list:
1325	priv->rx_list.count--;
1326	list_del(&temp->list);
1327clean_mem:
1328	kfree(temp);
1329	return ret;
1330}
1331
1332static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1333{
1334	struct ethtool_flow_spec_container *comp;
1335	u32 ret = -EINVAL;
1336
1337	if (list_empty(&priv->rx_list.list))
1338		return ret;
1339
1340	list_for_each_entry(comp, &priv->rx_list.list, list) {
1341		if (comp->fs.location == loc) {
1342			list_del(&comp->list);
1343			kfree(comp);
1344			priv->rx_list.count--;
1345			gfar_process_filer_changes(priv);
1346			ret = 0;
1347			break;
1348		}
1349	}
1350
1351	return ret;
1352}
1353
1354static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1355{
1356	struct ethtool_flow_spec_container *comp;
1357	u32 ret = -EINVAL;
1358
1359	list_for_each_entry(comp, &priv->rx_list.list, list) {
1360		if (comp->fs.location == cmd->fs.location) {
1361			memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1362			gfar_invert_masks(&cmd->fs);
1363			ret = 0;
1364			break;
1365		}
1366	}
1367
1368	return ret;
1369}
1370
1371static int gfar_get_cls_all(struct gfar_private *priv,
1372			    struct ethtool_rxnfc *cmd, u32 *rule_locs)
1373{
1374	struct ethtool_flow_spec_container *comp;
1375	u32 i = 0;
1376
1377	list_for_each_entry(comp, &priv->rx_list.list, list) {
1378		if (i == cmd->rule_cnt)
1379			return -EMSGSIZE;
1380		rule_locs[i] = comp->fs.location;
1381		i++;
1382	}
1383
1384	cmd->data = MAX_FILER_IDX;
1385	cmd->rule_cnt = i;
1386
1387	return 0;
1388}
1389
1390static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1391{
1392	struct gfar_private *priv = netdev_priv(dev);
1393	int ret = 0;
1394
1395	if (test_bit(GFAR_RESETTING, &priv->state))
1396		return -EBUSY;
1397
1398	mutex_lock(&priv->rx_queue_access);
1399
1400	switch (cmd->cmd) {
1401	case ETHTOOL_SRXFH:
1402		ret = gfar_set_hash_opts(priv, cmd);
1403		break;
1404	case ETHTOOL_SRXCLSRLINS:
1405		if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1406		     cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1407		    cmd->fs.location >= MAX_FILER_IDX) {
1408			ret = -EINVAL;
1409			break;
1410		}
1411		ret = gfar_add_cls(priv, &cmd->fs);
1412		break;
1413	case ETHTOOL_SRXCLSRLDEL:
1414		ret = gfar_del_cls(priv, cmd->fs.location);
1415		break;
1416	default:
1417		ret = -EINVAL;
1418	}
1419
1420	mutex_unlock(&priv->rx_queue_access);
1421
1422	return ret;
1423}
1424
1425static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1426			u32 *rule_locs)
1427{
1428	struct gfar_private *priv = netdev_priv(dev);
1429	int ret = 0;
1430
1431	switch (cmd->cmd) {
1432	case ETHTOOL_GRXRINGS:
1433		cmd->data = priv->num_rx_queues;
1434		break;
1435	case ETHTOOL_GRXCLSRLCNT:
1436		cmd->rule_cnt = priv->rx_list.count;
1437		break;
1438	case ETHTOOL_GRXCLSRULE:
1439		ret = gfar_get_cls(priv, cmd);
1440		break;
1441	case ETHTOOL_GRXCLSRLALL:
1442		ret = gfar_get_cls_all(priv, cmd, rule_locs);
1443		break;
1444	default:
1445		ret = -EINVAL;
1446		break;
1447	}
1448
1449	return ret;
1450}
1451
1452static int gfar_get_ts_info(struct net_device *dev,
1453			    struct kernel_ethtool_ts_info *info)
1454{
1455	struct gfar_private *priv = netdev_priv(dev);
1456	struct platform_device *ptp_dev;
1457	struct device_node *ptp_node;
1458	struct ptp_qoriq *ptp = NULL;
1459
 
 
1460	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1461		info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE;
 
1462		return 0;
1463	}
1464
1465	ptp_node = of_find_compatible_node(NULL, NULL, "fsl,etsec-ptp");
1466	if (ptp_node) {
1467		ptp_dev = of_find_device_by_node(ptp_node);
1468		of_node_put(ptp_node);
1469		if (ptp_dev)
1470			ptp = platform_get_drvdata(ptp_dev);
1471	}
1472
1473	if (ptp)
1474		info->phc_index = ptp->phc_index;
1475
1476	info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1477				SOF_TIMESTAMPING_RX_HARDWARE |
1478				SOF_TIMESTAMPING_RAW_HARDWARE |
1479				SOF_TIMESTAMPING_TX_SOFTWARE;
1480	info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1481			 (1 << HWTSTAMP_TX_ON);
1482	info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1483			   (1 << HWTSTAMP_FILTER_ALL);
1484	return 0;
1485}
1486
1487const struct ethtool_ops gfar_ethtool_ops = {
1488	.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1489				     ETHTOOL_COALESCE_MAX_FRAMES,
1490	.get_drvinfo = gfar_gdrvinfo,
1491	.get_regs_len = gfar_reglen,
1492	.get_regs = gfar_get_regs,
1493	.get_link = ethtool_op_get_link,
1494	.get_coalesce = gfar_gcoalesce,
1495	.set_coalesce = gfar_scoalesce,
1496	.get_ringparam = gfar_gringparam,
1497	.set_ringparam = gfar_sringparam,
1498	.get_pauseparam = gfar_gpauseparam,
1499	.set_pauseparam = gfar_spauseparam,
1500	.get_strings = gfar_gstrings,
1501	.get_sset_count = gfar_sset_count,
1502	.get_ethtool_stats = gfar_fill_stats,
1503	.get_msglevel = gfar_get_msglevel,
1504	.set_msglevel = gfar_set_msglevel,
1505#ifdef CONFIG_PM
1506	.get_wol = gfar_get_wol,
1507	.set_wol = gfar_set_wol,
1508#endif
1509	.set_rxnfc = gfar_set_nfc,
1510	.get_rxnfc = gfar_get_nfc,
1511	.get_ts_info = gfar_get_ts_info,
1512	.get_link_ksettings = phy_ethtool_get_link_ksettings,
1513	.set_link_ksettings = phy_ethtool_set_link_ksettings,
1514};