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