xref: /linux/drivers/net/ethernet/freescale/gianfar_ethtool.c (revision 4949009eb8d40a441dcddcd96e101e77d31cf1b2)
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 	"rx-large-frame-errors",
65 	"rx-short-frame-errors",
66 	"rx-non-octet-errors",
67 	"rx-crc-errors",
68 	"rx-overrun-errors",
69 	"rx-busy-errors",
70 	"rx-babbling-errors",
71 	"rx-truncated-frames",
72 	"ethernet-bus-error",
73 	"tx-babbling-errors",
74 	"tx-underrun-errors",
75 	"rx-skb-missing-errors",
76 	"tx-timeout-errors",
77 	"tx-rx-64-frames",
78 	"tx-rx-65-127-frames",
79 	"tx-rx-128-255-frames",
80 	"tx-rx-256-511-frames",
81 	"tx-rx-512-1023-frames",
82 	"tx-rx-1024-1518-frames",
83 	"tx-rx-1519-1522-good-vlan",
84 	"rx-bytes",
85 	"rx-packets",
86 	"rx-fcs-errors",
87 	"receive-multicast-packet",
88 	"receive-broadcast-packet",
89 	"rx-control-frame-packets",
90 	"rx-pause-frame-packets",
91 	"rx-unknown-op-code",
92 	"rx-alignment-error",
93 	"rx-frame-length-error",
94 	"rx-code-error",
95 	"rx-carrier-sense-error",
96 	"rx-undersize-packets",
97 	"rx-oversize-packets",
98 	"rx-fragmented-frames",
99 	"rx-jabber-frames",
100 	"rx-dropped-frames",
101 	"tx-byte-counter",
102 	"tx-packets",
103 	"tx-multicast-packets",
104 	"tx-broadcast-packets",
105 	"tx-pause-control-frames",
106 	"tx-deferral-packets",
107 	"tx-excessive-deferral-packets",
108 	"tx-single-collision-packets",
109 	"tx-multiple-collision-packets",
110 	"tx-late-collision-packets",
111 	"tx-excessive-collision-packets",
112 	"tx-total-collision",
113 	"reserved",
114 	"tx-dropped-frames",
115 	"tx-jabber-frames",
116 	"tx-fcs-errors",
117 	"tx-control-frames",
118 	"tx-oversize-frames",
119 	"tx-undersize-frames",
120 	"tx-fragmented-frames",
121 };
122 
123 /* Fill in a buffer with the strings which correspond to the
124  * stats */
125 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
126 {
127 	struct gfar_private *priv = netdev_priv(dev);
128 
129 	if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
130 		memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
131 	else
132 		memcpy(buf, stat_gstrings,
133 		       GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
134 }
135 
136 /* Fill in an array of 64-bit statistics from various sources.
137  * This array will be appended to the end of the ethtool_stats
138  * structure, and returned to user space
139  */
140 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
141 			    u64 *buf)
142 {
143 	int i;
144 	struct gfar_private *priv = netdev_priv(dev);
145 	struct gfar __iomem *regs = priv->gfargrp[0].regs;
146 	atomic64_t *extra = (atomic64_t *)&priv->extra_stats;
147 
148 	for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
149 		buf[i] = atomic64_read(&extra[i]);
150 
151 	if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
152 		u32 __iomem *rmon = (u32 __iomem *) &regs->rmon;
153 
154 		for (; i < GFAR_STATS_LEN; i++, rmon++)
155 			buf[i] = (u64) gfar_read(rmon);
156 	}
157 }
158 
159 static int gfar_sset_count(struct net_device *dev, int sset)
160 {
161 	struct gfar_private *priv = netdev_priv(dev);
162 
163 	switch (sset) {
164 	case ETH_SS_STATS:
165 		if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
166 			return GFAR_STATS_LEN;
167 		else
168 			return GFAR_EXTRA_STATS_LEN;
169 	default:
170 		return -EOPNOTSUPP;
171 	}
172 }
173 
174 /* Fills in the drvinfo structure with some basic info */
175 static void gfar_gdrvinfo(struct net_device *dev,
176 			  struct ethtool_drvinfo *drvinfo)
177 {
178 	strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
179 	strlcpy(drvinfo->version, gfar_driver_version,
180 		sizeof(drvinfo->version));
181 	strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
182 	strlcpy(drvinfo->bus_info, "N/A", sizeof(drvinfo->bus_info));
183 	drvinfo->regdump_len = 0;
184 	drvinfo->eedump_len = 0;
185 }
186 
187 
188 static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
189 {
190 	struct gfar_private *priv = netdev_priv(dev);
191 	struct phy_device *phydev = priv->phydev;
192 
193 	if (NULL == phydev)
194 		return -ENODEV;
195 
196 	return phy_ethtool_sset(phydev, cmd);
197 }
198 
199 
200 /* Return the current settings in the ethtool_cmd structure */
201 static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
202 {
203 	struct gfar_private *priv = netdev_priv(dev);
204 	struct phy_device *phydev = priv->phydev;
205 	struct gfar_priv_rx_q *rx_queue = NULL;
206 	struct gfar_priv_tx_q *tx_queue = NULL;
207 
208 	if (NULL == phydev)
209 		return -ENODEV;
210 	tx_queue = priv->tx_queue[0];
211 	rx_queue = priv->rx_queue[0];
212 
213 	/* etsec-1.7 and older versions have only one txic
214 	 * and rxic regs although they support multiple queues */
215 	cmd->maxtxpkt = get_icft_value(tx_queue->txic);
216 	cmd->maxrxpkt = get_icft_value(rx_queue->rxic);
217 
218 	return phy_ethtool_gset(phydev, cmd);
219 }
220 
221 /* Return the length of the register structure */
222 static int gfar_reglen(struct net_device *dev)
223 {
224 	return sizeof (struct gfar);
225 }
226 
227 /* Return a dump of the GFAR register space */
228 static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
229 			  void *regbuf)
230 {
231 	int i;
232 	struct gfar_private *priv = netdev_priv(dev);
233 	u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
234 	u32 *buf = (u32 *) regbuf;
235 
236 	for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
237 		buf[i] = gfar_read(&theregs[i]);
238 }
239 
240 /* Convert microseconds to ethernet clock ticks, which changes
241  * depending on what speed the controller is running at */
242 static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
243 				     unsigned int usecs)
244 {
245 	unsigned int count;
246 
247 	/* The timer is different, depending on the interface speed */
248 	switch (priv->phydev->speed) {
249 	case SPEED_1000:
250 		count = GFAR_GBIT_TIME;
251 		break;
252 	case SPEED_100:
253 		count = GFAR_100_TIME;
254 		break;
255 	case SPEED_10:
256 	default:
257 		count = GFAR_10_TIME;
258 		break;
259 	}
260 
261 	/* Make sure we return a number greater than 0
262 	 * if usecs > 0 */
263 	return (usecs * 1000 + count - 1) / count;
264 }
265 
266 /* Convert ethernet clock ticks to microseconds */
267 static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
268 				     unsigned int ticks)
269 {
270 	unsigned int count;
271 
272 	/* The timer is different, depending on the interface speed */
273 	switch (priv->phydev->speed) {
274 	case SPEED_1000:
275 		count = GFAR_GBIT_TIME;
276 		break;
277 	case SPEED_100:
278 		count = GFAR_100_TIME;
279 		break;
280 	case SPEED_10:
281 	default:
282 		count = GFAR_10_TIME;
283 		break;
284 	}
285 
286 	/* Make sure we return a number greater than 0 */
287 	/* if ticks is > 0 */
288 	return (ticks * count) / 1000;
289 }
290 
291 /* Get the coalescing parameters, and put them in the cvals
292  * structure.  */
293 static int gfar_gcoalesce(struct net_device *dev,
294 			  struct ethtool_coalesce *cvals)
295 {
296 	struct gfar_private *priv = netdev_priv(dev);
297 	struct gfar_priv_rx_q *rx_queue = NULL;
298 	struct gfar_priv_tx_q *tx_queue = NULL;
299 	unsigned long rxtime;
300 	unsigned long rxcount;
301 	unsigned long txtime;
302 	unsigned long txcount;
303 
304 	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
305 		return -EOPNOTSUPP;
306 
307 	if (NULL == priv->phydev)
308 		return -ENODEV;
309 
310 	rx_queue = priv->rx_queue[0];
311 	tx_queue = priv->tx_queue[0];
312 
313 	rxtime  = get_ictt_value(rx_queue->rxic);
314 	rxcount = get_icft_value(rx_queue->rxic);
315 	txtime  = get_ictt_value(tx_queue->txic);
316 	txcount = get_icft_value(tx_queue->txic);
317 	cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
318 	cvals->rx_max_coalesced_frames = rxcount;
319 
320 	cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
321 	cvals->tx_max_coalesced_frames = txcount;
322 
323 	cvals->use_adaptive_rx_coalesce = 0;
324 	cvals->use_adaptive_tx_coalesce = 0;
325 
326 	cvals->pkt_rate_low = 0;
327 	cvals->rx_coalesce_usecs_low = 0;
328 	cvals->rx_max_coalesced_frames_low = 0;
329 	cvals->tx_coalesce_usecs_low = 0;
330 	cvals->tx_max_coalesced_frames_low = 0;
331 
332 	/* When the packet rate is below pkt_rate_high but above
333 	 * pkt_rate_low (both measured in packets per second) the
334 	 * normal {rx,tx}_* coalescing parameters are used.
335 	 */
336 
337 	/* When the packet rate is (measured in packets per second)
338 	 * is above pkt_rate_high, the {rx,tx}_*_high parameters are
339 	 * used.
340 	 */
341 	cvals->pkt_rate_high = 0;
342 	cvals->rx_coalesce_usecs_high = 0;
343 	cvals->rx_max_coalesced_frames_high = 0;
344 	cvals->tx_coalesce_usecs_high = 0;
345 	cvals->tx_max_coalesced_frames_high = 0;
346 
347 	/* How often to do adaptive coalescing packet rate sampling,
348 	 * measured in seconds.  Must not be zero.
349 	 */
350 	cvals->rate_sample_interval = 0;
351 
352 	return 0;
353 }
354 
355 /* Change the coalescing values.
356  * Both cvals->*_usecs and cvals->*_frames have to be > 0
357  * in order for coalescing to be active
358  */
359 static int gfar_scoalesce(struct net_device *dev,
360 			  struct ethtool_coalesce *cvals)
361 {
362 	struct gfar_private *priv = netdev_priv(dev);
363 	int i, err = 0;
364 
365 	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
366 		return -EOPNOTSUPP;
367 
368 	if (NULL == priv->phydev)
369 		return -ENODEV;
370 
371 	/* Check the bounds of the values */
372 	if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
373 		netdev_info(dev, "Coalescing is limited to %d microseconds\n",
374 			    GFAR_MAX_COAL_USECS);
375 		return -EINVAL;
376 	}
377 
378 	if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
379 		netdev_info(dev, "Coalescing is limited to %d frames\n",
380 			    GFAR_MAX_COAL_FRAMES);
381 		return -EINVAL;
382 	}
383 
384 	/* Check the bounds of the values */
385 	if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
386 		netdev_info(dev, "Coalescing is limited to %d microseconds\n",
387 			    GFAR_MAX_COAL_USECS);
388 		return -EINVAL;
389 	}
390 
391 	if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
392 		netdev_info(dev, "Coalescing is limited to %d frames\n",
393 			    GFAR_MAX_COAL_FRAMES);
394 		return -EINVAL;
395 	}
396 
397 	while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
398 		cpu_relax();
399 
400 	/* Set up rx coalescing */
401 	if ((cvals->rx_coalesce_usecs == 0) ||
402 	    (cvals->rx_max_coalesced_frames == 0)) {
403 		for (i = 0; i < priv->num_rx_queues; i++)
404 			priv->rx_queue[i]->rxcoalescing = 0;
405 	} else {
406 		for (i = 0; i < priv->num_rx_queues; i++)
407 			priv->rx_queue[i]->rxcoalescing = 1;
408 	}
409 
410 	for (i = 0; i < priv->num_rx_queues; i++) {
411 		priv->rx_queue[i]->rxic = mk_ic_value(
412 			cvals->rx_max_coalesced_frames,
413 			gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
414 	}
415 
416 	/* Set up tx coalescing */
417 	if ((cvals->tx_coalesce_usecs == 0) ||
418 	    (cvals->tx_max_coalesced_frames == 0)) {
419 		for (i = 0; i < priv->num_tx_queues; i++)
420 			priv->tx_queue[i]->txcoalescing = 0;
421 	} else {
422 		for (i = 0; i < priv->num_tx_queues; i++)
423 			priv->tx_queue[i]->txcoalescing = 1;
424 	}
425 
426 	for (i = 0; i < priv->num_tx_queues; i++) {
427 		priv->tx_queue[i]->txic = mk_ic_value(
428 			cvals->tx_max_coalesced_frames,
429 			gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
430 	}
431 
432 	if (dev->flags & IFF_UP) {
433 		stop_gfar(dev);
434 		err = startup_gfar(dev);
435 	} else {
436 		gfar_mac_reset(priv);
437 	}
438 
439 	clear_bit_unlock(GFAR_RESETTING, &priv->state);
440 
441 	return err;
442 }
443 
444 /* Fills in rvals with the current ring parameters.  Currently,
445  * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
446  * jumbo are ignored by the driver */
447 static void gfar_gringparam(struct net_device *dev,
448 			    struct ethtool_ringparam *rvals)
449 {
450 	struct gfar_private *priv = netdev_priv(dev);
451 	struct gfar_priv_tx_q *tx_queue = NULL;
452 	struct gfar_priv_rx_q *rx_queue = NULL;
453 
454 	tx_queue = priv->tx_queue[0];
455 	rx_queue = priv->rx_queue[0];
456 
457 	rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
458 	rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
459 	rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
460 	rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
461 
462 	/* Values changeable by the user.  The valid values are
463 	 * in the range 1 to the "*_max_pending" counterpart above.
464 	 */
465 	rvals->rx_pending = rx_queue->rx_ring_size;
466 	rvals->rx_mini_pending = rx_queue->rx_ring_size;
467 	rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
468 	rvals->tx_pending = tx_queue->tx_ring_size;
469 }
470 
471 /* Change the current ring parameters, stopping the controller if
472  * necessary so that we don't mess things up while we're in motion.
473  */
474 static int gfar_sringparam(struct net_device *dev,
475 			   struct ethtool_ringparam *rvals)
476 {
477 	struct gfar_private *priv = netdev_priv(dev);
478 	int err = 0, i;
479 
480 	if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
481 		return -EINVAL;
482 
483 	if (!is_power_of_2(rvals->rx_pending)) {
484 		netdev_err(dev, "Ring sizes must be a power of 2\n");
485 		return -EINVAL;
486 	}
487 
488 	if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
489 		return -EINVAL;
490 
491 	if (!is_power_of_2(rvals->tx_pending)) {
492 		netdev_err(dev, "Ring sizes must be a power of 2\n");
493 		return -EINVAL;
494 	}
495 
496 	while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
497 		cpu_relax();
498 
499 	if (dev->flags & IFF_UP)
500 		stop_gfar(dev);
501 
502 	/* Change the sizes */
503 	for (i = 0; i < priv->num_rx_queues; i++)
504 		priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
505 
506 	for (i = 0; i < priv->num_tx_queues; i++)
507 		priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
508 
509 	/* Rebuild the rings with the new size */
510 	if (dev->flags & IFF_UP)
511 		err = startup_gfar(dev);
512 
513 	clear_bit_unlock(GFAR_RESETTING, &priv->state);
514 
515 	return err;
516 }
517 
518 static void gfar_gpauseparam(struct net_device *dev,
519 			     struct ethtool_pauseparam *epause)
520 {
521 	struct gfar_private *priv = netdev_priv(dev);
522 
523 	epause->autoneg = !!priv->pause_aneg_en;
524 	epause->rx_pause = !!priv->rx_pause_en;
525 	epause->tx_pause = !!priv->tx_pause_en;
526 }
527 
528 static int gfar_spauseparam(struct net_device *dev,
529 			    struct ethtool_pauseparam *epause)
530 {
531 	struct gfar_private *priv = netdev_priv(dev);
532 	struct phy_device *phydev = priv->phydev;
533 	struct gfar __iomem *regs = priv->gfargrp[0].regs;
534 	u32 oldadv, newadv;
535 
536 	if (!phydev)
537 		return -ENODEV;
538 
539 	if (!(phydev->supported & SUPPORTED_Pause) ||
540 	    (!(phydev->supported & SUPPORTED_Asym_Pause) &&
541 	     (epause->rx_pause != epause->tx_pause)))
542 		return -EINVAL;
543 
544 	priv->rx_pause_en = priv->tx_pause_en = 0;
545 	if (epause->rx_pause) {
546 		priv->rx_pause_en = 1;
547 
548 		if (epause->tx_pause) {
549 			priv->tx_pause_en = 1;
550 			/* FLOW_CTRL_RX & TX */
551 			newadv = ADVERTISED_Pause;
552 		} else  /* FLOW_CTLR_RX */
553 			newadv = ADVERTISED_Pause | ADVERTISED_Asym_Pause;
554 	} else if (epause->tx_pause) {
555 		priv->tx_pause_en = 1;
556 		/* FLOW_CTLR_TX */
557 		newadv = ADVERTISED_Asym_Pause;
558 	} else
559 		newadv = 0;
560 
561 	if (epause->autoneg)
562 		priv->pause_aneg_en = 1;
563 	else
564 		priv->pause_aneg_en = 0;
565 
566 	oldadv = phydev->advertising &
567 		(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
568 	if (oldadv != newadv) {
569 		phydev->advertising &=
570 			~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
571 		phydev->advertising |= newadv;
572 		if (phydev->autoneg)
573 			/* inform link partner of our
574 			 * new flow ctrl settings
575 			 */
576 			return phy_start_aneg(phydev);
577 
578 		if (!epause->autoneg) {
579 			u32 tempval;
580 			tempval = gfar_read(&regs->maccfg1);
581 			tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
582 
583 			priv->tx_actual_en = 0;
584 			if (priv->tx_pause_en) {
585 				priv->tx_actual_en = 1;
586 				tempval |= MACCFG1_TX_FLOW;
587 			}
588 
589 			if (priv->rx_pause_en)
590 				tempval |= MACCFG1_RX_FLOW;
591 			gfar_write(&regs->maccfg1, tempval);
592 		}
593 	}
594 
595 	return 0;
596 }
597 
598 int gfar_set_features(struct net_device *dev, netdev_features_t features)
599 {
600 	netdev_features_t changed = dev->features ^ features;
601 	struct gfar_private *priv = netdev_priv(dev);
602 	int err = 0;
603 
604 	if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
605 			 NETIF_F_RXCSUM)))
606 		return 0;
607 
608 	while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
609 		cpu_relax();
610 
611 	dev->features = features;
612 
613 	if (dev->flags & IFF_UP) {
614 		/* Now we take down the rings to rebuild them */
615 		stop_gfar(dev);
616 		err = startup_gfar(dev);
617 	} else {
618 		gfar_mac_reset(priv);
619 	}
620 
621 	clear_bit_unlock(GFAR_RESETTING, &priv->state);
622 
623 	return err;
624 }
625 
626 static uint32_t gfar_get_msglevel(struct net_device *dev)
627 {
628 	struct gfar_private *priv = netdev_priv(dev);
629 
630 	return priv->msg_enable;
631 }
632 
633 static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
634 {
635 	struct gfar_private *priv = netdev_priv(dev);
636 
637 	priv->msg_enable = data;
638 }
639 
640 #ifdef CONFIG_PM
641 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
642 {
643 	struct gfar_private *priv = netdev_priv(dev);
644 
645 	if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) {
646 		wol->supported = WAKE_MAGIC;
647 		wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0;
648 	} else {
649 		wol->supported = wol->wolopts = 0;
650 	}
651 }
652 
653 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
654 {
655 	struct gfar_private *priv = netdev_priv(dev);
656 	unsigned long flags;
657 
658 	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
659 	    wol->wolopts != 0)
660 		return -EINVAL;
661 
662 	if (wol->wolopts & ~WAKE_MAGIC)
663 		return -EINVAL;
664 
665 	device_set_wakeup_enable(&dev->dev, wol->wolopts & WAKE_MAGIC);
666 
667 	spin_lock_irqsave(&priv->bflock, flags);
668 	priv->wol_en =  !!device_may_wakeup(&dev->dev);
669 	spin_unlock_irqrestore(&priv->bflock, flags);
670 
671 	return 0;
672 }
673 #endif
674 
675 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
676 {
677 	u32 fcr = 0x0, fpr = FPR_FILER_MASK;
678 
679 	if (ethflow & RXH_L2DA) {
680 		fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH |
681 		      RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
682 		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
683 		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
684 		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
685 		priv->cur_filer_idx = priv->cur_filer_idx - 1;
686 
687 		fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
688 		      RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
689 		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
690 		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
691 		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
692 		priv->cur_filer_idx = priv->cur_filer_idx - 1;
693 	}
694 
695 	if (ethflow & RXH_VLAN) {
696 		fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
697 		      RQFCR_AND | RQFCR_HASHTBL_0;
698 		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
699 		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
700 		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
701 		priv->cur_filer_idx = priv->cur_filer_idx - 1;
702 	}
703 
704 	if (ethflow & RXH_IP_SRC) {
705 		fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
706 		      RQFCR_AND | RQFCR_HASHTBL_0;
707 		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
708 		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
709 		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
710 		priv->cur_filer_idx = priv->cur_filer_idx - 1;
711 	}
712 
713 	if (ethflow & (RXH_IP_DST)) {
714 		fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
715 		      RQFCR_AND | RQFCR_HASHTBL_0;
716 		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
717 		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
718 		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
719 		priv->cur_filer_idx = priv->cur_filer_idx - 1;
720 	}
721 
722 	if (ethflow & RXH_L3_PROTO) {
723 		fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
724 		      RQFCR_AND | RQFCR_HASHTBL_0;
725 		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
726 		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
727 		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
728 		priv->cur_filer_idx = priv->cur_filer_idx - 1;
729 	}
730 
731 	if (ethflow & RXH_L4_B_0_1) {
732 		fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
733 		      RQFCR_AND | RQFCR_HASHTBL_0;
734 		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
735 		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
736 		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
737 		priv->cur_filer_idx = priv->cur_filer_idx - 1;
738 	}
739 
740 	if (ethflow & RXH_L4_B_2_3) {
741 		fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
742 		      RQFCR_AND | RQFCR_HASHTBL_0;
743 		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
744 		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
745 		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
746 		priv->cur_filer_idx = priv->cur_filer_idx - 1;
747 	}
748 }
749 
750 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
751 				       u64 class)
752 {
753 	unsigned int last_rule_idx = priv->cur_filer_idx;
754 	unsigned int cmp_rqfpr;
755 	unsigned int *local_rqfpr;
756 	unsigned int *local_rqfcr;
757 	int i = 0x0, k = 0x0;
758 	int j = MAX_FILER_IDX, l = 0x0;
759 	int ret = 1;
760 
761 	local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
762 				    GFP_KERNEL);
763 	local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
764 				    GFP_KERNEL);
765 	if (!local_rqfpr || !local_rqfcr) {
766 		ret = 0;
767 		goto err;
768 	}
769 
770 	switch (class) {
771 	case TCP_V4_FLOW:
772 		cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
773 		break;
774 	case UDP_V4_FLOW:
775 		cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
776 		break;
777 	case TCP_V6_FLOW:
778 		cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
779 		break;
780 	case UDP_V6_FLOW:
781 		cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
782 		break;
783 	default:
784 		netdev_err(priv->ndev,
785 			   "Right now this class is not supported\n");
786 		ret = 0;
787 		goto err;
788 	}
789 
790 	for (i = 0; i < MAX_FILER_IDX + 1; i++) {
791 		local_rqfpr[j] = priv->ftp_rqfpr[i];
792 		local_rqfcr[j] = priv->ftp_rqfcr[i];
793 		j--;
794 		if ((priv->ftp_rqfcr[i] ==
795 		     (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
796 		    (priv->ftp_rqfpr[i] == cmp_rqfpr))
797 			break;
798 	}
799 
800 	if (i == MAX_FILER_IDX + 1) {
801 		netdev_err(priv->ndev,
802 			   "No parse rule found, can't create hash rules\n");
803 		ret = 0;
804 		goto err;
805 	}
806 
807 	/* If a match was found, then it begins the starting of a cluster rule
808 	 * if it was already programmed, we need to overwrite these rules
809 	 */
810 	for (l = i+1; l < MAX_FILER_IDX; l++) {
811 		if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
812 		    !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
813 			priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
814 					     RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
815 			priv->ftp_rqfpr[l] = FPR_FILER_MASK;
816 			gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
817 					 priv->ftp_rqfpr[l]);
818 			break;
819 		}
820 
821 		if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
822 			(priv->ftp_rqfcr[l] & RQFCR_AND))
823 			continue;
824 		else {
825 			local_rqfpr[j] = priv->ftp_rqfpr[l];
826 			local_rqfcr[j] = priv->ftp_rqfcr[l];
827 			j--;
828 		}
829 	}
830 
831 	priv->cur_filer_idx = l - 1;
832 	last_rule_idx = l;
833 
834 	/* hash rules */
835 	ethflow_to_filer_rules(priv, ethflow);
836 
837 	/* Write back the popped out rules again */
838 	for (k = j+1; k < MAX_FILER_IDX; k++) {
839 		priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
840 		priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
841 		gfar_write_filer(priv, priv->cur_filer_idx,
842 				 local_rqfcr[k], local_rqfpr[k]);
843 		if (!priv->cur_filer_idx)
844 			break;
845 		priv->cur_filer_idx = priv->cur_filer_idx - 1;
846 	}
847 
848 err:
849 	kfree(local_rqfcr);
850 	kfree(local_rqfpr);
851 	return ret;
852 }
853 
854 static int gfar_set_hash_opts(struct gfar_private *priv,
855 			      struct ethtool_rxnfc *cmd)
856 {
857 	/* write the filer rules here */
858 	if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
859 		return -EINVAL;
860 
861 	return 0;
862 }
863 
864 static int gfar_check_filer_hardware(struct gfar_private *priv)
865 {
866 	struct gfar __iomem *regs = priv->gfargrp[0].regs;
867 	u32 i;
868 
869 	/* Check if we are in FIFO mode */
870 	i = gfar_read(&regs->ecntrl);
871 	i &= ECNTRL_FIFM;
872 	if (i == ECNTRL_FIFM) {
873 		netdev_notice(priv->ndev, "Interface in FIFO mode\n");
874 		i = gfar_read(&regs->rctrl);
875 		i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
876 		if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
877 			netdev_info(priv->ndev,
878 				    "Receive Queue Filtering enabled\n");
879 		} else {
880 			netdev_warn(priv->ndev,
881 				    "Receive Queue Filtering disabled\n");
882 			return -EOPNOTSUPP;
883 		}
884 	}
885 	/* Or in standard mode */
886 	else {
887 		i = gfar_read(&regs->rctrl);
888 		i &= RCTRL_PRSDEP_MASK;
889 		if (i == RCTRL_PRSDEP_MASK) {
890 			netdev_info(priv->ndev,
891 				    "Receive Queue Filtering enabled\n");
892 		} else {
893 			netdev_warn(priv->ndev,
894 				    "Receive Queue Filtering disabled\n");
895 			return -EOPNOTSUPP;
896 		}
897 	}
898 
899 	/* Sets the properties for arbitrary filer rule
900 	 * to the first 4 Layer 4 Bytes
901 	 */
902 	gfar_write(&regs->rbifx, 0xC0C1C2C3);
903 	return 0;
904 }
905 
906 static int gfar_comp_asc(const void *a, const void *b)
907 {
908 	return memcmp(a, b, 4);
909 }
910 
911 static int gfar_comp_desc(const void *a, const void *b)
912 {
913 	return -memcmp(a, b, 4);
914 }
915 
916 static void gfar_swap(void *a, void *b, int size)
917 {
918 	u32 *_a = a;
919 	u32 *_b = b;
920 
921 	swap(_a[0], _b[0]);
922 	swap(_a[1], _b[1]);
923 	swap(_a[2], _b[2]);
924 	swap(_a[3], _b[3]);
925 }
926 
927 /* Write a mask to filer cache */
928 static void gfar_set_mask(u32 mask, struct filer_table *tab)
929 {
930 	tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
931 	tab->fe[tab->index].prop = mask;
932 	tab->index++;
933 }
934 
935 /* Sets parse bits (e.g. IP or TCP) */
936 static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
937 {
938 	gfar_set_mask(mask, tab);
939 	tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
940 				   RQFCR_AND;
941 	tab->fe[tab->index].prop = value;
942 	tab->index++;
943 }
944 
945 static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
946 				       struct filer_table *tab)
947 {
948 	gfar_set_mask(mask, tab);
949 	tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
950 	tab->fe[tab->index].prop = value;
951 	tab->index++;
952 }
953 
954 /* For setting a tuple of value and mask of type flag
955  * Example:
956  * IP-Src = 10.0.0.0/255.0.0.0
957  * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
958  *
959  * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
960  * For a don't care mask it gives us a 0
961  *
962  * The check if don't care and the mask adjustment if mask=0 is done for VLAN
963  * and MAC stuff on an upper level (due to missing information on this level).
964  * For these guys we can discard them if they are value=0 and mask=0.
965  *
966  * Further the all masks are one-padded for better hardware efficiency.
967  */
968 static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
969 			       struct filer_table *tab)
970 {
971 	switch (flag) {
972 		/* 3bit */
973 	case RQFCR_PID_PRI:
974 		if (!(value | mask))
975 			return;
976 		mask |= RQFCR_PID_PRI_MASK;
977 		break;
978 		/* 8bit */
979 	case RQFCR_PID_L4P:
980 	case RQFCR_PID_TOS:
981 		if (!~(mask | RQFCR_PID_L4P_MASK))
982 			return;
983 		if (!mask)
984 			mask = ~0;
985 		else
986 			mask |= RQFCR_PID_L4P_MASK;
987 		break;
988 		/* 12bit */
989 	case RQFCR_PID_VID:
990 		if (!(value | mask))
991 			return;
992 		mask |= RQFCR_PID_VID_MASK;
993 		break;
994 		/* 16bit */
995 	case RQFCR_PID_DPT:
996 	case RQFCR_PID_SPT:
997 	case RQFCR_PID_ETY:
998 		if (!~(mask | RQFCR_PID_PORT_MASK))
999 			return;
1000 		if (!mask)
1001 			mask = ~0;
1002 		else
1003 			mask |= RQFCR_PID_PORT_MASK;
1004 		break;
1005 		/* 24bit */
1006 	case RQFCR_PID_DAH:
1007 	case RQFCR_PID_DAL:
1008 	case RQFCR_PID_SAH:
1009 	case RQFCR_PID_SAL:
1010 		if (!(value | mask))
1011 			return;
1012 		mask |= RQFCR_PID_MAC_MASK;
1013 		break;
1014 		/* for all real 32bit masks */
1015 	default:
1016 		if (!~mask)
1017 			return;
1018 		if (!mask)
1019 			mask = ~0;
1020 		break;
1021 	}
1022 	gfar_set_general_attribute(value, mask, flag, tab);
1023 }
1024 
1025 /* Translates value and mask for UDP, TCP or SCTP */
1026 static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
1027 			      struct ethtool_tcpip4_spec *mask,
1028 			      struct filer_table *tab)
1029 {
1030 	gfar_set_attribute(be32_to_cpu(value->ip4src),
1031 			   be32_to_cpu(mask->ip4src),
1032 			   RQFCR_PID_SIA, tab);
1033 	gfar_set_attribute(be32_to_cpu(value->ip4dst),
1034 			   be32_to_cpu(mask->ip4dst),
1035 			   RQFCR_PID_DIA, tab);
1036 	gfar_set_attribute(be16_to_cpu(value->pdst),
1037 			   be16_to_cpu(mask->pdst),
1038 			   RQFCR_PID_DPT, tab);
1039 	gfar_set_attribute(be16_to_cpu(value->psrc),
1040 			   be16_to_cpu(mask->psrc),
1041 			   RQFCR_PID_SPT, tab);
1042 	gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1043 }
1044 
1045 /* Translates value and mask for RAW-IP4 */
1046 static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
1047 			     struct ethtool_usrip4_spec *mask,
1048 			     struct filer_table *tab)
1049 {
1050 	gfar_set_attribute(be32_to_cpu(value->ip4src),
1051 			   be32_to_cpu(mask->ip4src),
1052 			   RQFCR_PID_SIA, tab);
1053 	gfar_set_attribute(be32_to_cpu(value->ip4dst),
1054 			   be32_to_cpu(mask->ip4dst),
1055 			   RQFCR_PID_DIA, tab);
1056 	gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1057 	gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
1058 	gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
1059 			   be32_to_cpu(mask->l4_4_bytes),
1060 			   RQFCR_PID_ARB, tab);
1061 
1062 }
1063 
1064 /* Translates value and mask for ETHER spec */
1065 static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
1066 			   struct filer_table *tab)
1067 {
1068 	u32 upper_temp_mask = 0;
1069 	u32 lower_temp_mask = 0;
1070 
1071 	/* Source address */
1072 	if (!is_broadcast_ether_addr(mask->h_source)) {
1073 		if (is_zero_ether_addr(mask->h_source)) {
1074 			upper_temp_mask = 0xFFFFFFFF;
1075 			lower_temp_mask = 0xFFFFFFFF;
1076 		} else {
1077 			upper_temp_mask = mask->h_source[0] << 16 |
1078 					  mask->h_source[1] << 8  |
1079 					  mask->h_source[2];
1080 			lower_temp_mask = mask->h_source[3] << 16 |
1081 					  mask->h_source[4] << 8  |
1082 					  mask->h_source[5];
1083 		}
1084 		/* Upper 24bit */
1085 		gfar_set_attribute(value->h_source[0] << 16 |
1086 				   value->h_source[1] << 8  |
1087 				   value->h_source[2],
1088 				   upper_temp_mask, RQFCR_PID_SAH, tab);
1089 		/* And the same for the lower part */
1090 		gfar_set_attribute(value->h_source[3] << 16 |
1091 				   value->h_source[4] << 8  |
1092 				   value->h_source[5],
1093 				   lower_temp_mask, RQFCR_PID_SAL, tab);
1094 	}
1095 	/* Destination address */
1096 	if (!is_broadcast_ether_addr(mask->h_dest)) {
1097 		/* Special for destination is limited broadcast */
1098 		if ((is_broadcast_ether_addr(value->h_dest) &&
1099 		    is_zero_ether_addr(mask->h_dest))) {
1100 			gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1101 		} else {
1102 			if (is_zero_ether_addr(mask->h_dest)) {
1103 				upper_temp_mask = 0xFFFFFFFF;
1104 				lower_temp_mask = 0xFFFFFFFF;
1105 			} else {
1106 				upper_temp_mask = mask->h_dest[0] << 16 |
1107 						  mask->h_dest[1] << 8  |
1108 						  mask->h_dest[2];
1109 				lower_temp_mask = mask->h_dest[3] << 16 |
1110 						  mask->h_dest[4] << 8  |
1111 						  mask->h_dest[5];
1112 			}
1113 
1114 			/* Upper 24bit */
1115 			gfar_set_attribute(value->h_dest[0] << 16 |
1116 					   value->h_dest[1] << 8  |
1117 					   value->h_dest[2],
1118 					   upper_temp_mask, RQFCR_PID_DAH, tab);
1119 			/* And the same for the lower part */
1120 			gfar_set_attribute(value->h_dest[3] << 16 |
1121 					   value->h_dest[4] << 8  |
1122 					   value->h_dest[5],
1123 					   lower_temp_mask, RQFCR_PID_DAL, tab);
1124 		}
1125 	}
1126 
1127 	gfar_set_attribute(be16_to_cpu(value->h_proto),
1128 			   be16_to_cpu(mask->h_proto),
1129 			   RQFCR_PID_ETY, tab);
1130 }
1131 
1132 static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1133 {
1134 	return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1135 }
1136 
1137 static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1138 {
1139 	return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1140 }
1141 
1142 static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1143 {
1144 	return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1145 }
1146 
1147 static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1148 {
1149 	return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1150 }
1151 
1152 static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1153 {
1154 	return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1155 		VLAN_PRIO_SHIFT;
1156 }
1157 
1158 static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1159 {
1160 	return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1161 		VLAN_PRIO_SHIFT;
1162 }
1163 
1164 /* Convert a rule to binary filter format of gianfar */
1165 static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1166 				 struct filer_table *tab)
1167 {
1168 	u32 vlan = 0, vlan_mask = 0;
1169 	u32 id = 0, id_mask = 0;
1170 	u32 cfi = 0, cfi_mask = 0;
1171 	u32 prio = 0, prio_mask = 0;
1172 	u32 old_index = tab->index;
1173 
1174 	/* Check if vlan is wanted */
1175 	if ((rule->flow_type & FLOW_EXT) &&
1176 	    (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1177 		if (!rule->m_ext.vlan_tci)
1178 			rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1179 
1180 		vlan = RQFPR_VLN;
1181 		vlan_mask = RQFPR_VLN;
1182 
1183 		/* Separate the fields */
1184 		id = vlan_tci_vid(rule);
1185 		id_mask = vlan_tci_vidm(rule);
1186 		cfi = vlan_tci_cfi(rule);
1187 		cfi_mask = vlan_tci_cfim(rule);
1188 		prio = vlan_tci_prio(rule);
1189 		prio_mask = vlan_tci_priom(rule);
1190 
1191 		if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
1192 			vlan |= RQFPR_CFI;
1193 			vlan_mask |= RQFPR_CFI;
1194 		} else if (cfi != VLAN_TAG_PRESENT &&
1195 			   cfi_mask == VLAN_TAG_PRESENT) {
1196 			vlan_mask |= RQFPR_CFI;
1197 		}
1198 	}
1199 
1200 	switch (rule->flow_type & ~FLOW_EXT) {
1201 	case TCP_V4_FLOW:
1202 		gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1203 				    RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1204 		gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1205 				  &rule->m_u.tcp_ip4_spec, tab);
1206 		break;
1207 	case UDP_V4_FLOW:
1208 		gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1209 				    RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1210 		gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1211 				  &rule->m_u.udp_ip4_spec, tab);
1212 		break;
1213 	case SCTP_V4_FLOW:
1214 		gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1215 				    tab);
1216 		gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1217 		gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1218 				  (struct ethtool_tcpip4_spec *)&rule->m_u,
1219 				  tab);
1220 		break;
1221 	case IP_USER_FLOW:
1222 		gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1223 				    tab);
1224 		gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1225 				 (struct ethtool_usrip4_spec *) &rule->m_u,
1226 				 tab);
1227 		break;
1228 	case ETHER_FLOW:
1229 		if (vlan)
1230 			gfar_set_parse_bits(vlan, vlan_mask, tab);
1231 		gfar_set_ether((struct ethhdr *) &rule->h_u,
1232 			       (struct ethhdr *) &rule->m_u, tab);
1233 		break;
1234 	default:
1235 		return -1;
1236 	}
1237 
1238 	/* Set the vlan attributes in the end */
1239 	if (vlan) {
1240 		gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1241 		gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1242 	}
1243 
1244 	/* If there has been nothing written till now, it must be a default */
1245 	if (tab->index == old_index) {
1246 		gfar_set_mask(0xFFFFFFFF, tab);
1247 		tab->fe[tab->index].ctrl = 0x20;
1248 		tab->fe[tab->index].prop = 0x0;
1249 		tab->index++;
1250 	}
1251 
1252 	/* Remove last AND */
1253 	tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1254 
1255 	/* Specify which queue to use or to drop */
1256 	if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1257 		tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1258 	else
1259 		tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1260 
1261 	/* Only big enough entries can be clustered */
1262 	if (tab->index > (old_index + 2)) {
1263 		tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1264 		tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1265 	}
1266 
1267 	/* In rare cases the cache can be full while there is
1268 	 * free space in hw
1269 	 */
1270 	if (tab->index > MAX_FILER_CACHE_IDX - 1)
1271 		return -EBUSY;
1272 
1273 	return 0;
1274 }
1275 
1276 /* Copy size filer entries */
1277 static void gfar_copy_filer_entries(struct gfar_filer_entry dst[0],
1278 				    struct gfar_filer_entry src[0], s32 size)
1279 {
1280 	while (size > 0) {
1281 		size--;
1282 		dst[size].ctrl = src[size].ctrl;
1283 		dst[size].prop = src[size].prop;
1284 	}
1285 }
1286 
1287 /* Delete the contents of the filer-table between start and end
1288  * and collapse them
1289  */
1290 static int gfar_trim_filer_entries(u32 begin, u32 end, struct filer_table *tab)
1291 {
1292 	int length;
1293 
1294 	if (end > MAX_FILER_CACHE_IDX || end < begin)
1295 		return -EINVAL;
1296 
1297 	end++;
1298 	length = end - begin;
1299 
1300 	/* Copy */
1301 	while (end < tab->index) {
1302 		tab->fe[begin].ctrl = tab->fe[end].ctrl;
1303 		tab->fe[begin++].prop = tab->fe[end++].prop;
1304 
1305 	}
1306 	/* Fill up with don't cares */
1307 	while (begin < tab->index) {
1308 		tab->fe[begin].ctrl = 0x60;
1309 		tab->fe[begin].prop = 0xFFFFFFFF;
1310 		begin++;
1311 	}
1312 
1313 	tab->index -= length;
1314 	return 0;
1315 }
1316 
1317 /* Make space on the wanted location */
1318 static int gfar_expand_filer_entries(u32 begin, u32 length,
1319 				     struct filer_table *tab)
1320 {
1321 	if (length == 0 || length + tab->index > MAX_FILER_CACHE_IDX ||
1322 	    begin > MAX_FILER_CACHE_IDX)
1323 		return -EINVAL;
1324 
1325 	gfar_copy_filer_entries(&(tab->fe[begin + length]), &(tab->fe[begin]),
1326 				tab->index - length + 1);
1327 
1328 	tab->index += length;
1329 	return 0;
1330 }
1331 
1332 static int gfar_get_next_cluster_start(int start, struct filer_table *tab)
1333 {
1334 	for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
1335 	     start++) {
1336 		if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
1337 		    (RQFCR_AND | RQFCR_CLE))
1338 			return start;
1339 	}
1340 	return -1;
1341 }
1342 
1343 static int gfar_get_next_cluster_end(int start, struct filer_table *tab)
1344 {
1345 	for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
1346 	     start++) {
1347 		if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
1348 		    (RQFCR_CLE))
1349 			return start;
1350 	}
1351 	return -1;
1352 }
1353 
1354 /* Uses hardwares clustering option to reduce
1355  * the number of filer table entries
1356  */
1357 static void gfar_cluster_filer(struct filer_table *tab)
1358 {
1359 	s32 i = -1, j, iend, jend;
1360 
1361 	while ((i = gfar_get_next_cluster_start(++i, tab)) != -1) {
1362 		j = i;
1363 		while ((j = gfar_get_next_cluster_start(++j, tab)) != -1) {
1364 			/* The cluster entries self and the previous one
1365 			 * (a mask) must be identical!
1366 			 */
1367 			if (tab->fe[i].ctrl != tab->fe[j].ctrl)
1368 				break;
1369 			if (tab->fe[i].prop != tab->fe[j].prop)
1370 				break;
1371 			if (tab->fe[i - 1].ctrl != tab->fe[j - 1].ctrl)
1372 				break;
1373 			if (tab->fe[i - 1].prop != tab->fe[j - 1].prop)
1374 				break;
1375 			iend = gfar_get_next_cluster_end(i, tab);
1376 			jend = gfar_get_next_cluster_end(j, tab);
1377 			if (jend == -1 || iend == -1)
1378 				break;
1379 
1380 			/* First we make some free space, where our cluster
1381 			 * element should be. Then we copy it there and finally
1382 			 * delete in from its old location.
1383 			 */
1384 			if (gfar_expand_filer_entries(iend, (jend - j), tab) ==
1385 			    -EINVAL)
1386 				break;
1387 
1388 			gfar_copy_filer_entries(&(tab->fe[iend + 1]),
1389 						&(tab->fe[jend + 1]), jend - j);
1390 
1391 			if (gfar_trim_filer_entries(jend - 1,
1392 						    jend + (jend - j),
1393 						    tab) == -EINVAL)
1394 				return;
1395 
1396 			/* Mask out cluster bit */
1397 			tab->fe[iend].ctrl &= ~(RQFCR_CLE);
1398 		}
1399 	}
1400 }
1401 
1402 /* Swaps the masked bits of a1<>a2 and b1<>b2 */
1403 static void gfar_swap_bits(struct gfar_filer_entry *a1,
1404 			   struct gfar_filer_entry *a2,
1405 			   struct gfar_filer_entry *b1,
1406 			   struct gfar_filer_entry *b2, u32 mask)
1407 {
1408 	u32 temp[4];
1409 	temp[0] = a1->ctrl & mask;
1410 	temp[1] = a2->ctrl & mask;
1411 	temp[2] = b1->ctrl & mask;
1412 	temp[3] = b2->ctrl & mask;
1413 
1414 	a1->ctrl &= ~mask;
1415 	a2->ctrl &= ~mask;
1416 	b1->ctrl &= ~mask;
1417 	b2->ctrl &= ~mask;
1418 
1419 	a1->ctrl |= temp[1];
1420 	a2->ctrl |= temp[0];
1421 	b1->ctrl |= temp[3];
1422 	b2->ctrl |= temp[2];
1423 }
1424 
1425 /* Generate a list consisting of masks values with their start and
1426  * end of validity and block as indicator for parts belonging
1427  * together (glued by ANDs) in mask_table
1428  */
1429 static u32 gfar_generate_mask_table(struct gfar_mask_entry *mask_table,
1430 				    struct filer_table *tab)
1431 {
1432 	u32 i, and_index = 0, block_index = 1;
1433 
1434 	for (i = 0; i < tab->index; i++) {
1435 
1436 		/* LSByte of control = 0 sets a mask */
1437 		if (!(tab->fe[i].ctrl & 0xF)) {
1438 			mask_table[and_index].mask = tab->fe[i].prop;
1439 			mask_table[and_index].start = i;
1440 			mask_table[and_index].block = block_index;
1441 			if (and_index >= 1)
1442 				mask_table[and_index - 1].end = i - 1;
1443 			and_index++;
1444 		}
1445 		/* cluster starts and ends will be separated because they should
1446 		 * hold their position
1447 		 */
1448 		if (tab->fe[i].ctrl & RQFCR_CLE)
1449 			block_index++;
1450 		/* A not set AND indicates the end of a depended block */
1451 		if (!(tab->fe[i].ctrl & RQFCR_AND))
1452 			block_index++;
1453 	}
1454 
1455 	mask_table[and_index - 1].end = i - 1;
1456 
1457 	return and_index;
1458 }
1459 
1460 /* Sorts the entries of mask_table by the values of the masks.
1461  * Important: The 0xFF80 flags of the first and last entry of a
1462  * block must hold their position (which queue, CLusterEnable, ReJEct,
1463  * AND)
1464  */
1465 static void gfar_sort_mask_table(struct gfar_mask_entry *mask_table,
1466 				 struct filer_table *temp_table, u32 and_index)
1467 {
1468 	/* Pointer to compare function (_asc or _desc) */
1469 	int (*gfar_comp)(const void *, const void *);
1470 
1471 	u32 i, size = 0, start = 0, prev = 1;
1472 	u32 old_first, old_last, new_first, new_last;
1473 
1474 	gfar_comp = &gfar_comp_desc;
1475 
1476 	for (i = 0; i < and_index; i++) {
1477 		if (prev != mask_table[i].block) {
1478 			old_first = mask_table[start].start + 1;
1479 			old_last = mask_table[i - 1].end;
1480 			sort(mask_table + start, size,
1481 			     sizeof(struct gfar_mask_entry),
1482 			     gfar_comp, &gfar_swap);
1483 
1484 			/* Toggle order for every block. This makes the
1485 			 * thing more efficient!
1486 			 */
1487 			if (gfar_comp == gfar_comp_desc)
1488 				gfar_comp = &gfar_comp_asc;
1489 			else
1490 				gfar_comp = &gfar_comp_desc;
1491 
1492 			new_first = mask_table[start].start + 1;
1493 			new_last = mask_table[i - 1].end;
1494 
1495 			gfar_swap_bits(&temp_table->fe[new_first],
1496 				       &temp_table->fe[old_first],
1497 				       &temp_table->fe[new_last],
1498 				       &temp_table->fe[old_last],
1499 				       RQFCR_QUEUE | RQFCR_CLE |
1500 				       RQFCR_RJE | RQFCR_AND);
1501 
1502 			start = i;
1503 			size = 0;
1504 		}
1505 		size++;
1506 		prev = mask_table[i].block;
1507 	}
1508 }
1509 
1510 /* Reduces the number of masks needed in the filer table to save entries
1511  * This is done by sorting the masks of a depended block. A depended block is
1512  * identified by gluing ANDs or CLE. The sorting order toggles after every
1513  * block. Of course entries in scope of a mask must change their location with
1514  * it.
1515  */
1516 static int gfar_optimize_filer_masks(struct filer_table *tab)
1517 {
1518 	struct filer_table *temp_table;
1519 	struct gfar_mask_entry *mask_table;
1520 
1521 	u32 and_index = 0, previous_mask = 0, i = 0, j = 0, size = 0;
1522 	s32 ret = 0;
1523 
1524 	/* We need a copy of the filer table because
1525 	 * we want to change its order
1526 	 */
1527 	temp_table = kmemdup(tab, sizeof(*temp_table), GFP_KERNEL);
1528 	if (temp_table == NULL)
1529 		return -ENOMEM;
1530 
1531 	mask_table = kcalloc(MAX_FILER_CACHE_IDX / 2 + 1,
1532 			     sizeof(struct gfar_mask_entry), GFP_KERNEL);
1533 
1534 	if (mask_table == NULL) {
1535 		ret = -ENOMEM;
1536 		goto end;
1537 	}
1538 
1539 	and_index = gfar_generate_mask_table(mask_table, tab);
1540 
1541 	gfar_sort_mask_table(mask_table, temp_table, and_index);
1542 
1543 	/* Now we can copy the data from our duplicated filer table to
1544 	 * the real one in the order the mask table says
1545 	 */
1546 	for (i = 0; i < and_index; i++) {
1547 		size = mask_table[i].end - mask_table[i].start + 1;
1548 		gfar_copy_filer_entries(&(tab->fe[j]),
1549 				&(temp_table->fe[mask_table[i].start]), size);
1550 		j += size;
1551 	}
1552 
1553 	/* And finally we just have to check for duplicated masks and drop the
1554 	 * second ones
1555 	 */
1556 	for (i = 0; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1557 		if (tab->fe[i].ctrl == 0x80) {
1558 			previous_mask = i++;
1559 			break;
1560 		}
1561 	}
1562 	for (; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1563 		if (tab->fe[i].ctrl == 0x80) {
1564 			if (tab->fe[i].prop == tab->fe[previous_mask].prop) {
1565 				/* Two identical ones found!
1566 				 * So drop the second one!
1567 				 */
1568 				gfar_trim_filer_entries(i, i, tab);
1569 			} else
1570 				/* Not identical! */
1571 				previous_mask = i;
1572 		}
1573 	}
1574 
1575 	kfree(mask_table);
1576 end:	kfree(temp_table);
1577 	return ret;
1578 }
1579 
1580 /* Write the bit-pattern from software's buffer to hardware registers */
1581 static int gfar_write_filer_table(struct gfar_private *priv,
1582 				  struct filer_table *tab)
1583 {
1584 	u32 i = 0;
1585 	if (tab->index > MAX_FILER_IDX - 1)
1586 		return -EBUSY;
1587 
1588 	/* Fill regular entries */
1589 	for (; i < MAX_FILER_IDX - 1 && (tab->fe[i].ctrl | tab->fe[i].prop);
1590 	     i++)
1591 		gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1592 	/* Fill the rest with fall-troughs */
1593 	for (; i < MAX_FILER_IDX - 1; i++)
1594 		gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1595 	/* Last entry must be default accept
1596 	 * because that's what people expect
1597 	 */
1598 	gfar_write_filer(priv, i, 0x20, 0x0);
1599 
1600 	return 0;
1601 }
1602 
1603 static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1604 				 struct gfar_private *priv)
1605 {
1606 
1607 	if (flow->flow_type & FLOW_EXT)	{
1608 		if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1609 			netdev_warn(priv->ndev,
1610 				    "User-specific data not supported!\n");
1611 		if (~flow->m_ext.vlan_etype)
1612 			netdev_warn(priv->ndev,
1613 				    "VLAN-etype not supported!\n");
1614 	}
1615 	if (flow->flow_type == IP_USER_FLOW)
1616 		if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1617 			netdev_warn(priv->ndev,
1618 				    "IP-Version differing from IPv4 not supported!\n");
1619 
1620 	return 0;
1621 }
1622 
1623 static int gfar_process_filer_changes(struct gfar_private *priv)
1624 {
1625 	struct ethtool_flow_spec_container *j;
1626 	struct filer_table *tab;
1627 	s32 i = 0;
1628 	s32 ret = 0;
1629 
1630 	/* So index is set to zero, too! */
1631 	tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1632 	if (tab == NULL)
1633 		return -ENOMEM;
1634 
1635 	/* Now convert the existing filer data from flow_spec into
1636 	 * filer tables binary format
1637 	 */
1638 	list_for_each_entry(j, &priv->rx_list.list, list) {
1639 		ret = gfar_convert_to_filer(&j->fs, tab);
1640 		if (ret == -EBUSY) {
1641 			netdev_err(priv->ndev,
1642 				   "Rule not added: No free space!\n");
1643 			goto end;
1644 		}
1645 		if (ret == -1) {
1646 			netdev_err(priv->ndev,
1647 				   "Rule not added: Unsupported Flow-type!\n");
1648 			goto end;
1649 		}
1650 	}
1651 
1652 	i = tab->index;
1653 
1654 	/* Optimizations to save entries */
1655 	gfar_cluster_filer(tab);
1656 	gfar_optimize_filer_masks(tab);
1657 
1658 	pr_debug("\tSummary:\n"
1659 		 "\tData on hardware: %d\n"
1660 		 "\tCompression rate: %d%%\n",
1661 		 tab->index, 100 - (100 * tab->index) / i);
1662 
1663 	/* Write everything to hardware */
1664 	ret = gfar_write_filer_table(priv, tab);
1665 	if (ret == -EBUSY) {
1666 		netdev_err(priv->ndev, "Rule not added: No free space!\n");
1667 		goto end;
1668 	}
1669 
1670 end:
1671 	kfree(tab);
1672 	return ret;
1673 }
1674 
1675 static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1676 {
1677 	u32 i = 0;
1678 
1679 	for (i = 0; i < sizeof(flow->m_u); i++)
1680 		flow->m_u.hdata[i] ^= 0xFF;
1681 
1682 	flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1683 	flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1684 	flow->m_ext.data[0] ^= cpu_to_be32(~0);
1685 	flow->m_ext.data[1] ^= cpu_to_be32(~0);
1686 }
1687 
1688 static int gfar_add_cls(struct gfar_private *priv,
1689 			struct ethtool_rx_flow_spec *flow)
1690 {
1691 	struct ethtool_flow_spec_container *temp, *comp;
1692 	int ret = 0;
1693 
1694 	temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1695 	if (temp == NULL)
1696 		return -ENOMEM;
1697 	memcpy(&temp->fs, flow, sizeof(temp->fs));
1698 
1699 	gfar_invert_masks(&temp->fs);
1700 	ret = gfar_check_capability(&temp->fs, priv);
1701 	if (ret)
1702 		goto clean_mem;
1703 	/* Link in the new element at the right @location */
1704 	if (list_empty(&priv->rx_list.list)) {
1705 		ret = gfar_check_filer_hardware(priv);
1706 		if (ret != 0)
1707 			goto clean_mem;
1708 		list_add(&temp->list, &priv->rx_list.list);
1709 		goto process;
1710 	} else {
1711 		list_for_each_entry(comp, &priv->rx_list.list, list) {
1712 			if (comp->fs.location > flow->location) {
1713 				list_add_tail(&temp->list, &comp->list);
1714 				goto process;
1715 			}
1716 			if (comp->fs.location == flow->location) {
1717 				netdev_err(priv->ndev,
1718 					   "Rule not added: ID %d not free!\n",
1719 					   flow->location);
1720 				ret = -EBUSY;
1721 				goto clean_mem;
1722 			}
1723 		}
1724 		list_add_tail(&temp->list, &priv->rx_list.list);
1725 	}
1726 
1727 process:
1728 	ret = gfar_process_filer_changes(priv);
1729 	if (ret)
1730 		goto clean_list;
1731 	priv->rx_list.count++;
1732 	return ret;
1733 
1734 clean_list:
1735 	list_del(&temp->list);
1736 clean_mem:
1737 	kfree(temp);
1738 	return ret;
1739 }
1740 
1741 static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1742 {
1743 	struct ethtool_flow_spec_container *comp;
1744 	u32 ret = -EINVAL;
1745 
1746 	if (list_empty(&priv->rx_list.list))
1747 		return ret;
1748 
1749 	list_for_each_entry(comp, &priv->rx_list.list, list) {
1750 		if (comp->fs.location == loc) {
1751 			list_del(&comp->list);
1752 			kfree(comp);
1753 			priv->rx_list.count--;
1754 			gfar_process_filer_changes(priv);
1755 			ret = 0;
1756 			break;
1757 		}
1758 	}
1759 
1760 	return ret;
1761 }
1762 
1763 static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1764 {
1765 	struct ethtool_flow_spec_container *comp;
1766 	u32 ret = -EINVAL;
1767 
1768 	list_for_each_entry(comp, &priv->rx_list.list, list) {
1769 		if (comp->fs.location == cmd->fs.location) {
1770 			memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1771 			gfar_invert_masks(&cmd->fs);
1772 			ret = 0;
1773 			break;
1774 		}
1775 	}
1776 
1777 	return ret;
1778 }
1779 
1780 static int gfar_get_cls_all(struct gfar_private *priv,
1781 			    struct ethtool_rxnfc *cmd, u32 *rule_locs)
1782 {
1783 	struct ethtool_flow_spec_container *comp;
1784 	u32 i = 0;
1785 
1786 	list_for_each_entry(comp, &priv->rx_list.list, list) {
1787 		if (i == cmd->rule_cnt)
1788 			return -EMSGSIZE;
1789 		rule_locs[i] = comp->fs.location;
1790 		i++;
1791 	}
1792 
1793 	cmd->data = MAX_FILER_IDX;
1794 	cmd->rule_cnt = i;
1795 
1796 	return 0;
1797 }
1798 
1799 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1800 {
1801 	struct gfar_private *priv = netdev_priv(dev);
1802 	int ret = 0;
1803 
1804 	if (test_bit(GFAR_RESETTING, &priv->state))
1805 		return -EBUSY;
1806 
1807 	mutex_lock(&priv->rx_queue_access);
1808 
1809 	switch (cmd->cmd) {
1810 	case ETHTOOL_SRXFH:
1811 		ret = gfar_set_hash_opts(priv, cmd);
1812 		break;
1813 	case ETHTOOL_SRXCLSRLINS:
1814 		if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1815 		     cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1816 		    cmd->fs.location >= MAX_FILER_IDX) {
1817 			ret = -EINVAL;
1818 			break;
1819 		}
1820 		ret = gfar_add_cls(priv, &cmd->fs);
1821 		break;
1822 	case ETHTOOL_SRXCLSRLDEL:
1823 		ret = gfar_del_cls(priv, cmd->fs.location);
1824 		break;
1825 	default:
1826 		ret = -EINVAL;
1827 	}
1828 
1829 	mutex_unlock(&priv->rx_queue_access);
1830 
1831 	return ret;
1832 }
1833 
1834 static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1835 			u32 *rule_locs)
1836 {
1837 	struct gfar_private *priv = netdev_priv(dev);
1838 	int ret = 0;
1839 
1840 	switch (cmd->cmd) {
1841 	case ETHTOOL_GRXRINGS:
1842 		cmd->data = priv->num_rx_queues;
1843 		break;
1844 	case ETHTOOL_GRXCLSRLCNT:
1845 		cmd->rule_cnt = priv->rx_list.count;
1846 		break;
1847 	case ETHTOOL_GRXCLSRULE:
1848 		ret = gfar_get_cls(priv, cmd);
1849 		break;
1850 	case ETHTOOL_GRXCLSRLALL:
1851 		ret = gfar_get_cls_all(priv, cmd, rule_locs);
1852 		break;
1853 	default:
1854 		ret = -EINVAL;
1855 		break;
1856 	}
1857 
1858 	return ret;
1859 }
1860 
1861 int gfar_phc_index = -1;
1862 EXPORT_SYMBOL(gfar_phc_index);
1863 
1864 static int gfar_get_ts_info(struct net_device *dev,
1865 			    struct ethtool_ts_info *info)
1866 {
1867 	struct gfar_private *priv = netdev_priv(dev);
1868 
1869 	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1870 		info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1871 					SOF_TIMESTAMPING_SOFTWARE;
1872 		info->phc_index = -1;
1873 		return 0;
1874 	}
1875 	info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1876 				SOF_TIMESTAMPING_RX_HARDWARE |
1877 				SOF_TIMESTAMPING_RAW_HARDWARE;
1878 	info->phc_index = gfar_phc_index;
1879 	info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1880 			 (1 << HWTSTAMP_TX_ON);
1881 	info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1882 			   (1 << HWTSTAMP_FILTER_ALL);
1883 	return 0;
1884 }
1885 
1886 const struct ethtool_ops gfar_ethtool_ops = {
1887 	.get_settings = gfar_gsettings,
1888 	.set_settings = gfar_ssettings,
1889 	.get_drvinfo = gfar_gdrvinfo,
1890 	.get_regs_len = gfar_reglen,
1891 	.get_regs = gfar_get_regs,
1892 	.get_link = ethtool_op_get_link,
1893 	.get_coalesce = gfar_gcoalesce,
1894 	.set_coalesce = gfar_scoalesce,
1895 	.get_ringparam = gfar_gringparam,
1896 	.set_ringparam = gfar_sringparam,
1897 	.get_pauseparam = gfar_gpauseparam,
1898 	.set_pauseparam = gfar_spauseparam,
1899 	.get_strings = gfar_gstrings,
1900 	.get_sset_count = gfar_sset_count,
1901 	.get_ethtool_stats = gfar_fill_stats,
1902 	.get_msglevel = gfar_get_msglevel,
1903 	.set_msglevel = gfar_set_msglevel,
1904 #ifdef CONFIG_PM
1905 	.get_wol = gfar_get_wol,
1906 	.set_wol = gfar_set_wol,
1907 #endif
1908 	.set_rxnfc = gfar_set_nfc,
1909 	.get_rxnfc = gfar_get_nfc,
1910 	.get_ts_info = gfar_get_ts_info,
1911 };
1912