Loading...
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 <linux/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
49static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
50 u64 *buf);
51static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
52static int gfar_gcoalesce(struct net_device *dev,
53 struct ethtool_coalesce *cvals);
54static int gfar_scoalesce(struct net_device *dev,
55 struct ethtool_coalesce *cvals);
56static void gfar_gringparam(struct net_device *dev,
57 struct ethtool_ringparam *rvals);
58static int gfar_sringparam(struct net_device *dev,
59 struct ethtool_ringparam *rvals);
60static void gfar_gdrvinfo(struct net_device *dev,
61 struct ethtool_drvinfo *drvinfo);
62
63static const char stat_gstrings[][ETH_GSTRING_LEN] = {
64 /* extra stats */
65 "rx-allocation-errors",
66 "rx-large-frame-errors",
67 "rx-short-frame-errors",
68 "rx-non-octet-errors",
69 "rx-crc-errors",
70 "rx-overrun-errors",
71 "rx-busy-errors",
72 "rx-babbling-errors",
73 "rx-truncated-frames",
74 "ethernet-bus-error",
75 "tx-babbling-errors",
76 "tx-underrun-errors",
77 "tx-timeout-errors",
78 /* rmon stats */
79 "tx-rx-64-frames",
80 "tx-rx-65-127-frames",
81 "tx-rx-128-255-frames",
82 "tx-rx-256-511-frames",
83 "tx-rx-512-1023-frames",
84 "tx-rx-1024-1518-frames",
85 "tx-rx-1519-1522-good-vlan",
86 "rx-bytes",
87 "rx-packets",
88 "rx-fcs-errors",
89 "receive-multicast-packet",
90 "receive-broadcast-packet",
91 "rx-control-frame-packets",
92 "rx-pause-frame-packets",
93 "rx-unknown-op-code",
94 "rx-alignment-error",
95 "rx-frame-length-error",
96 "rx-code-error",
97 "rx-carrier-sense-error",
98 "rx-undersize-packets",
99 "rx-oversize-packets",
100 "rx-fragmented-frames",
101 "rx-jabber-frames",
102 "rx-dropped-frames",
103 "tx-byte-counter",
104 "tx-packets",
105 "tx-multicast-packets",
106 "tx-broadcast-packets",
107 "tx-pause-control-frames",
108 "tx-deferral-packets",
109 "tx-excessive-deferral-packets",
110 "tx-single-collision-packets",
111 "tx-multiple-collision-packets",
112 "tx-late-collision-packets",
113 "tx-excessive-collision-packets",
114 "tx-total-collision",
115 "reserved",
116 "tx-dropped-frames",
117 "tx-jabber-frames",
118 "tx-fcs-errors",
119 "tx-control-frames",
120 "tx-oversize-frames",
121 "tx-undersize-frames",
122 "tx-fragmented-frames",
123};
124
125/* Fill in a buffer with the strings which correspond to the
126 * stats */
127static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
128{
129 struct gfar_private *priv = netdev_priv(dev);
130
131 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
132 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
133 else
134 memcpy(buf, stat_gstrings,
135 GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
136}
137
138/* Fill in an array of 64-bit statistics from various sources.
139 * This array will be appended to the end of the ethtool_stats
140 * structure, and returned to user space
141 */
142static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
143 u64 *buf)
144{
145 int i;
146 struct gfar_private *priv = netdev_priv(dev);
147 struct gfar __iomem *regs = priv->gfargrp[0].regs;
148 atomic64_t *extra = (atomic64_t *)&priv->extra_stats;
149
150 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
151 buf[i] = atomic64_read(&extra[i]);
152
153 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
154 u32 __iomem *rmon = (u32 __iomem *) ®s->rmon;
155
156 for (; i < GFAR_STATS_LEN; i++, rmon++)
157 buf[i] = (u64) gfar_read(rmon);
158 }
159}
160
161static int gfar_sset_count(struct net_device *dev, int sset)
162{
163 struct gfar_private *priv = netdev_priv(dev);
164
165 switch (sset) {
166 case ETH_SS_STATS:
167 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
168 return GFAR_STATS_LEN;
169 else
170 return GFAR_EXTRA_STATS_LEN;
171 default:
172 return -EOPNOTSUPP;
173 }
174}
175
176/* Fills in the drvinfo structure with some basic info */
177static void gfar_gdrvinfo(struct net_device *dev,
178 struct ethtool_drvinfo *drvinfo)
179{
180 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
181 strlcpy(drvinfo->version, gfar_driver_version,
182 sizeof(drvinfo->version));
183 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
184 strlcpy(drvinfo->bus_info, "N/A", sizeof(drvinfo->bus_info));
185}
186
187/* Return the length of the register structure */
188static int gfar_reglen(struct net_device *dev)
189{
190 return sizeof (struct gfar);
191}
192
193/* Return a dump of the GFAR register space */
194static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
195 void *regbuf)
196{
197 int i;
198 struct gfar_private *priv = netdev_priv(dev);
199 u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
200 u32 *buf = (u32 *) regbuf;
201
202 for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
203 buf[i] = gfar_read(&theregs[i]);
204}
205
206/* Convert microseconds to ethernet clock ticks, which changes
207 * depending on what speed the controller is running at */
208static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
209 unsigned int usecs)
210{
211 struct net_device *ndev = priv->ndev;
212 struct phy_device *phydev = ndev->phydev;
213 unsigned int count;
214
215 /* The timer is different, depending on the interface speed */
216 switch (phydev->speed) {
217 case SPEED_1000:
218 count = GFAR_GBIT_TIME;
219 break;
220 case SPEED_100:
221 count = GFAR_100_TIME;
222 break;
223 case SPEED_10:
224 default:
225 count = GFAR_10_TIME;
226 break;
227 }
228
229 /* Make sure we return a number greater than 0
230 * if usecs > 0 */
231 return (usecs * 1000 + count - 1) / count;
232}
233
234/* Convert ethernet clock ticks to microseconds */
235static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
236 unsigned int ticks)
237{
238 struct net_device *ndev = priv->ndev;
239 struct phy_device *phydev = ndev->phydev;
240 unsigned int count;
241
242 /* The timer is different, depending on the interface speed */
243 switch (phydev->speed) {
244 case SPEED_1000:
245 count = GFAR_GBIT_TIME;
246 break;
247 case SPEED_100:
248 count = GFAR_100_TIME;
249 break;
250 case SPEED_10:
251 default:
252 count = GFAR_10_TIME;
253 break;
254 }
255
256 /* Make sure we return a number greater than 0 */
257 /* if ticks is > 0 */
258 return (ticks * count) / 1000;
259}
260
261/* Get the coalescing parameters, and put them in the cvals
262 * structure. */
263static int gfar_gcoalesce(struct net_device *dev,
264 struct ethtool_coalesce *cvals)
265{
266 struct gfar_private *priv = netdev_priv(dev);
267 struct gfar_priv_rx_q *rx_queue = NULL;
268 struct gfar_priv_tx_q *tx_queue = NULL;
269 unsigned long rxtime;
270 unsigned long rxcount;
271 unsigned long txtime;
272 unsigned long txcount;
273
274 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
275 return -EOPNOTSUPP;
276
277 if (!dev->phydev)
278 return -ENODEV;
279
280 rx_queue = priv->rx_queue[0];
281 tx_queue = priv->tx_queue[0];
282
283 rxtime = get_ictt_value(rx_queue->rxic);
284 rxcount = get_icft_value(rx_queue->rxic);
285 txtime = get_ictt_value(tx_queue->txic);
286 txcount = get_icft_value(tx_queue->txic);
287 cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
288 cvals->rx_max_coalesced_frames = rxcount;
289
290 cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
291 cvals->tx_max_coalesced_frames = txcount;
292
293 cvals->use_adaptive_rx_coalesce = 0;
294 cvals->use_adaptive_tx_coalesce = 0;
295
296 cvals->pkt_rate_low = 0;
297 cvals->rx_coalesce_usecs_low = 0;
298 cvals->rx_max_coalesced_frames_low = 0;
299 cvals->tx_coalesce_usecs_low = 0;
300 cvals->tx_max_coalesced_frames_low = 0;
301
302 /* When the packet rate is below pkt_rate_high but above
303 * pkt_rate_low (both measured in packets per second) the
304 * normal {rx,tx}_* coalescing parameters are used.
305 */
306
307 /* When the packet rate is (measured in packets per second)
308 * is above pkt_rate_high, the {rx,tx}_*_high parameters are
309 * used.
310 */
311 cvals->pkt_rate_high = 0;
312 cvals->rx_coalesce_usecs_high = 0;
313 cvals->rx_max_coalesced_frames_high = 0;
314 cvals->tx_coalesce_usecs_high = 0;
315 cvals->tx_max_coalesced_frames_high = 0;
316
317 /* How often to do adaptive coalescing packet rate sampling,
318 * measured in seconds. Must not be zero.
319 */
320 cvals->rate_sample_interval = 0;
321
322 return 0;
323}
324
325/* Change the coalescing values.
326 * Both cvals->*_usecs and cvals->*_frames have to be > 0
327 * in order for coalescing to be active
328 */
329static int gfar_scoalesce(struct net_device *dev,
330 struct ethtool_coalesce *cvals)
331{
332 struct gfar_private *priv = netdev_priv(dev);
333 int i, err = 0;
334
335 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
336 return -EOPNOTSUPP;
337
338 if (!dev->phydev)
339 return -ENODEV;
340
341 /* Check the bounds of the values */
342 if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
343 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
344 GFAR_MAX_COAL_USECS);
345 return -EINVAL;
346 }
347
348 if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
349 netdev_info(dev, "Coalescing is limited to %d frames\n",
350 GFAR_MAX_COAL_FRAMES);
351 return -EINVAL;
352 }
353
354 /* Check the bounds of the values */
355 if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
356 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
357 GFAR_MAX_COAL_USECS);
358 return -EINVAL;
359 }
360
361 if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
362 netdev_info(dev, "Coalescing is limited to %d frames\n",
363 GFAR_MAX_COAL_FRAMES);
364 return -EINVAL;
365 }
366
367 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
368 cpu_relax();
369
370 /* Set up rx coalescing */
371 if ((cvals->rx_coalesce_usecs == 0) ||
372 (cvals->rx_max_coalesced_frames == 0)) {
373 for (i = 0; i < priv->num_rx_queues; i++)
374 priv->rx_queue[i]->rxcoalescing = 0;
375 } else {
376 for (i = 0; i < priv->num_rx_queues; i++)
377 priv->rx_queue[i]->rxcoalescing = 1;
378 }
379
380 for (i = 0; i < priv->num_rx_queues; i++) {
381 priv->rx_queue[i]->rxic = mk_ic_value(
382 cvals->rx_max_coalesced_frames,
383 gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
384 }
385
386 /* Set up tx coalescing */
387 if ((cvals->tx_coalesce_usecs == 0) ||
388 (cvals->tx_max_coalesced_frames == 0)) {
389 for (i = 0; i < priv->num_tx_queues; i++)
390 priv->tx_queue[i]->txcoalescing = 0;
391 } else {
392 for (i = 0; i < priv->num_tx_queues; i++)
393 priv->tx_queue[i]->txcoalescing = 1;
394 }
395
396 for (i = 0; i < priv->num_tx_queues; i++) {
397 priv->tx_queue[i]->txic = mk_ic_value(
398 cvals->tx_max_coalesced_frames,
399 gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
400 }
401
402 if (dev->flags & IFF_UP) {
403 stop_gfar(dev);
404 err = startup_gfar(dev);
405 } else {
406 gfar_mac_reset(priv);
407 }
408
409 clear_bit_unlock(GFAR_RESETTING, &priv->state);
410
411 return err;
412}
413
414/* Fills in rvals with the current ring parameters. Currently,
415 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
416 * jumbo are ignored by the driver */
417static void gfar_gringparam(struct net_device *dev,
418 struct ethtool_ringparam *rvals)
419{
420 struct gfar_private *priv = netdev_priv(dev);
421 struct gfar_priv_tx_q *tx_queue = NULL;
422 struct gfar_priv_rx_q *rx_queue = NULL;
423
424 tx_queue = priv->tx_queue[0];
425 rx_queue = priv->rx_queue[0];
426
427 rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
428 rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
429 rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
430 rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
431
432 /* Values changeable by the user. The valid values are
433 * in the range 1 to the "*_max_pending" counterpart above.
434 */
435 rvals->rx_pending = rx_queue->rx_ring_size;
436 rvals->rx_mini_pending = rx_queue->rx_ring_size;
437 rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
438 rvals->tx_pending = tx_queue->tx_ring_size;
439}
440
441/* Change the current ring parameters, stopping the controller if
442 * necessary so that we don't mess things up while we're in motion.
443 */
444static int gfar_sringparam(struct net_device *dev,
445 struct ethtool_ringparam *rvals)
446{
447 struct gfar_private *priv = netdev_priv(dev);
448 int err = 0, i;
449
450 if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
451 return -EINVAL;
452
453 if (!is_power_of_2(rvals->rx_pending)) {
454 netdev_err(dev, "Ring sizes must be a power of 2\n");
455 return -EINVAL;
456 }
457
458 if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
459 return -EINVAL;
460
461 if (!is_power_of_2(rvals->tx_pending)) {
462 netdev_err(dev, "Ring sizes must be a power of 2\n");
463 return -EINVAL;
464 }
465
466 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
467 cpu_relax();
468
469 if (dev->flags & IFF_UP)
470 stop_gfar(dev);
471
472 /* Change the sizes */
473 for (i = 0; i < priv->num_rx_queues; i++)
474 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
475
476 for (i = 0; i < priv->num_tx_queues; i++)
477 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
478
479 /* Rebuild the rings with the new size */
480 if (dev->flags & IFF_UP)
481 err = startup_gfar(dev);
482
483 clear_bit_unlock(GFAR_RESETTING, &priv->state);
484
485 return err;
486}
487
488static void gfar_gpauseparam(struct net_device *dev,
489 struct ethtool_pauseparam *epause)
490{
491 struct gfar_private *priv = netdev_priv(dev);
492
493 epause->autoneg = !!priv->pause_aneg_en;
494 epause->rx_pause = !!priv->rx_pause_en;
495 epause->tx_pause = !!priv->tx_pause_en;
496}
497
498static int gfar_spauseparam(struct net_device *dev,
499 struct ethtool_pauseparam *epause)
500{
501 struct gfar_private *priv = netdev_priv(dev);
502 struct phy_device *phydev = dev->phydev;
503 struct gfar __iomem *regs = priv->gfargrp[0].regs;
504 u32 oldadv, newadv;
505
506 if (!phydev)
507 return -ENODEV;
508
509 if (!(phydev->supported & SUPPORTED_Pause) ||
510 (!(phydev->supported & SUPPORTED_Asym_Pause) &&
511 (epause->rx_pause != epause->tx_pause)))
512 return -EINVAL;
513
514 priv->rx_pause_en = priv->tx_pause_en = 0;
515 if (epause->rx_pause) {
516 priv->rx_pause_en = 1;
517
518 if (epause->tx_pause) {
519 priv->tx_pause_en = 1;
520 /* FLOW_CTRL_RX & TX */
521 newadv = ADVERTISED_Pause;
522 } else /* FLOW_CTLR_RX */
523 newadv = ADVERTISED_Pause | ADVERTISED_Asym_Pause;
524 } else if (epause->tx_pause) {
525 priv->tx_pause_en = 1;
526 /* FLOW_CTLR_TX */
527 newadv = ADVERTISED_Asym_Pause;
528 } else
529 newadv = 0;
530
531 if (epause->autoneg)
532 priv->pause_aneg_en = 1;
533 else
534 priv->pause_aneg_en = 0;
535
536 oldadv = phydev->advertising &
537 (ADVERTISED_Pause | ADVERTISED_Asym_Pause);
538 if (oldadv != newadv) {
539 phydev->advertising &=
540 ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
541 phydev->advertising |= newadv;
542 if (phydev->autoneg)
543 /* inform link partner of our
544 * new flow ctrl settings
545 */
546 return phy_start_aneg(phydev);
547
548 if (!epause->autoneg) {
549 u32 tempval;
550 tempval = gfar_read(®s->maccfg1);
551 tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
552
553 priv->tx_actual_en = 0;
554 if (priv->tx_pause_en) {
555 priv->tx_actual_en = 1;
556 tempval |= MACCFG1_TX_FLOW;
557 }
558
559 if (priv->rx_pause_en)
560 tempval |= MACCFG1_RX_FLOW;
561 gfar_write(®s->maccfg1, tempval);
562 }
563 }
564
565 return 0;
566}
567
568int gfar_set_features(struct net_device *dev, netdev_features_t features)
569{
570 netdev_features_t changed = dev->features ^ features;
571 struct gfar_private *priv = netdev_priv(dev);
572 int err = 0;
573
574 if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
575 NETIF_F_RXCSUM)))
576 return 0;
577
578 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
579 cpu_relax();
580
581 dev->features = features;
582
583 if (dev->flags & IFF_UP) {
584 /* Now we take down the rings to rebuild them */
585 stop_gfar(dev);
586 err = startup_gfar(dev);
587 } else {
588 gfar_mac_reset(priv);
589 }
590
591 clear_bit_unlock(GFAR_RESETTING, &priv->state);
592
593 return err;
594}
595
596static uint32_t gfar_get_msglevel(struct net_device *dev)
597{
598 struct gfar_private *priv = netdev_priv(dev);
599
600 return priv->msg_enable;
601}
602
603static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
604{
605 struct gfar_private *priv = netdev_priv(dev);
606
607 priv->msg_enable = data;
608}
609
610#ifdef CONFIG_PM
611static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
612{
613 struct gfar_private *priv = netdev_priv(dev);
614
615 wol->supported = 0;
616 wol->wolopts = 0;
617
618 if (priv->wol_supported & GFAR_WOL_MAGIC)
619 wol->supported |= WAKE_MAGIC;
620
621 if (priv->wol_supported & GFAR_WOL_FILER_UCAST)
622 wol->supported |= WAKE_UCAST;
623
624 if (priv->wol_opts & GFAR_WOL_MAGIC)
625 wol->wolopts |= WAKE_MAGIC;
626
627 if (priv->wol_opts & GFAR_WOL_FILER_UCAST)
628 wol->wolopts |= WAKE_UCAST;
629}
630
631static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
632{
633 struct gfar_private *priv = netdev_priv(dev);
634 u16 wol_opts = 0;
635 int err;
636
637 if (!priv->wol_supported && wol->wolopts)
638 return -EINVAL;
639
640 if (wol->wolopts & ~(WAKE_MAGIC | WAKE_UCAST))
641 return -EINVAL;
642
643 if (wol->wolopts & WAKE_MAGIC) {
644 wol_opts |= GFAR_WOL_MAGIC;
645 } else {
646 if (wol->wolopts & WAKE_UCAST)
647 wol_opts |= GFAR_WOL_FILER_UCAST;
648 }
649
650 wol_opts &= priv->wol_supported;
651 priv->wol_opts = 0;
652
653 err = device_set_wakeup_enable(priv->dev, wol_opts);
654 if (err)
655 return err;
656
657 priv->wol_opts = wol_opts;
658
659 return 0;
660}
661#endif
662
663static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
664{
665 u32 fcr = 0x0, fpr = FPR_FILER_MASK;
666
667 if (ethflow & RXH_L2DA) {
668 fcr = RQFCR_PID_DAH | RQFCR_CMP_NOMATCH |
669 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
670 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
671 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
672 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
673 priv->cur_filer_idx = priv->cur_filer_idx - 1;
674
675 fcr = RQFCR_PID_DAL | RQFCR_CMP_NOMATCH |
676 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
677 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
678 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
679 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
680 priv->cur_filer_idx = priv->cur_filer_idx - 1;
681 }
682
683 if (ethflow & RXH_VLAN) {
684 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
685 RQFCR_AND | RQFCR_HASHTBL_0;
686 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
687 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
688 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
689 priv->cur_filer_idx = priv->cur_filer_idx - 1;
690 }
691
692 if (ethflow & RXH_IP_SRC) {
693 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
694 RQFCR_AND | RQFCR_HASHTBL_0;
695 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
696 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
697 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
698 priv->cur_filer_idx = priv->cur_filer_idx - 1;
699 }
700
701 if (ethflow & (RXH_IP_DST)) {
702 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
703 RQFCR_AND | RQFCR_HASHTBL_0;
704 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
705 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
706 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
707 priv->cur_filer_idx = priv->cur_filer_idx - 1;
708 }
709
710 if (ethflow & RXH_L3_PROTO) {
711 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
712 RQFCR_AND | RQFCR_HASHTBL_0;
713 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
714 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
715 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
716 priv->cur_filer_idx = priv->cur_filer_idx - 1;
717 }
718
719 if (ethflow & RXH_L4_B_0_1) {
720 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
721 RQFCR_AND | RQFCR_HASHTBL_0;
722 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
723 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
724 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
725 priv->cur_filer_idx = priv->cur_filer_idx - 1;
726 }
727
728 if (ethflow & RXH_L4_B_2_3) {
729 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
730 RQFCR_AND | RQFCR_HASHTBL_0;
731 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
732 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
733 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
734 priv->cur_filer_idx = priv->cur_filer_idx - 1;
735 }
736}
737
738static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
739 u64 class)
740{
741 unsigned int last_rule_idx = priv->cur_filer_idx;
742 unsigned int cmp_rqfpr;
743 unsigned int *local_rqfpr;
744 unsigned int *local_rqfcr;
745 int i = 0x0, k = 0x0;
746 int j = MAX_FILER_IDX, l = 0x0;
747 int ret = 1;
748
749 local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
750 GFP_KERNEL);
751 local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
752 GFP_KERNEL);
753 if (!local_rqfpr || !local_rqfcr) {
754 ret = 0;
755 goto err;
756 }
757
758 switch (class) {
759 case TCP_V4_FLOW:
760 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
761 break;
762 case UDP_V4_FLOW:
763 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
764 break;
765 case TCP_V6_FLOW:
766 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
767 break;
768 case UDP_V6_FLOW:
769 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
770 break;
771 default:
772 netdev_err(priv->ndev,
773 "Right now this class is not supported\n");
774 ret = 0;
775 goto err;
776 }
777
778 for (i = 0; i < MAX_FILER_IDX + 1; i++) {
779 local_rqfpr[j] = priv->ftp_rqfpr[i];
780 local_rqfcr[j] = priv->ftp_rqfcr[i];
781 j--;
782 if ((priv->ftp_rqfcr[i] ==
783 (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
784 (priv->ftp_rqfpr[i] == cmp_rqfpr))
785 break;
786 }
787
788 if (i == MAX_FILER_IDX + 1) {
789 netdev_err(priv->ndev,
790 "No parse rule found, can't create hash rules\n");
791 ret = 0;
792 goto err;
793 }
794
795 /* If a match was found, then it begins the starting of a cluster rule
796 * if it was already programmed, we need to overwrite these rules
797 */
798 for (l = i+1; l < MAX_FILER_IDX; l++) {
799 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
800 !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
801 priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
802 RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
803 priv->ftp_rqfpr[l] = FPR_FILER_MASK;
804 gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
805 priv->ftp_rqfpr[l]);
806 break;
807 }
808
809 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
810 (priv->ftp_rqfcr[l] & RQFCR_AND))
811 continue;
812 else {
813 local_rqfpr[j] = priv->ftp_rqfpr[l];
814 local_rqfcr[j] = priv->ftp_rqfcr[l];
815 j--;
816 }
817 }
818
819 priv->cur_filer_idx = l - 1;
820 last_rule_idx = l;
821
822 /* hash rules */
823 ethflow_to_filer_rules(priv, ethflow);
824
825 /* Write back the popped out rules again */
826 for (k = j+1; k < MAX_FILER_IDX; k++) {
827 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
828 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
829 gfar_write_filer(priv, priv->cur_filer_idx,
830 local_rqfcr[k], local_rqfpr[k]);
831 if (!priv->cur_filer_idx)
832 break;
833 priv->cur_filer_idx = priv->cur_filer_idx - 1;
834 }
835
836err:
837 kfree(local_rqfcr);
838 kfree(local_rqfpr);
839 return ret;
840}
841
842static int gfar_set_hash_opts(struct gfar_private *priv,
843 struct ethtool_rxnfc *cmd)
844{
845 /* write the filer rules here */
846 if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
847 return -EINVAL;
848
849 return 0;
850}
851
852static int gfar_check_filer_hardware(struct gfar_private *priv)
853{
854 struct gfar __iomem *regs = priv->gfargrp[0].regs;
855 u32 i;
856
857 /* Check if we are in FIFO mode */
858 i = gfar_read(®s->ecntrl);
859 i &= ECNTRL_FIFM;
860 if (i == ECNTRL_FIFM) {
861 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
862 i = gfar_read(®s->rctrl);
863 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
864 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
865 netdev_info(priv->ndev,
866 "Receive Queue Filtering enabled\n");
867 } else {
868 netdev_warn(priv->ndev,
869 "Receive Queue Filtering disabled\n");
870 return -EOPNOTSUPP;
871 }
872 }
873 /* Or in standard mode */
874 else {
875 i = gfar_read(®s->rctrl);
876 i &= RCTRL_PRSDEP_MASK;
877 if (i == RCTRL_PRSDEP_MASK) {
878 netdev_info(priv->ndev,
879 "Receive Queue Filtering enabled\n");
880 } else {
881 netdev_warn(priv->ndev,
882 "Receive Queue Filtering disabled\n");
883 return -EOPNOTSUPP;
884 }
885 }
886
887 /* Sets the properties for arbitrary filer rule
888 * to the first 4 Layer 4 Bytes
889 */
890 gfar_write(®s->rbifx, 0xC0C1C2C3);
891 return 0;
892}
893
894/* Write a mask to filer cache */
895static void gfar_set_mask(u32 mask, struct filer_table *tab)
896{
897 tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
898 tab->fe[tab->index].prop = mask;
899 tab->index++;
900}
901
902/* Sets parse bits (e.g. IP or TCP) */
903static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
904{
905 gfar_set_mask(mask, tab);
906 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
907 RQFCR_AND;
908 tab->fe[tab->index].prop = value;
909 tab->index++;
910}
911
912static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
913 struct filer_table *tab)
914{
915 gfar_set_mask(mask, tab);
916 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
917 tab->fe[tab->index].prop = value;
918 tab->index++;
919}
920
921/* For setting a tuple of value and mask of type flag
922 * Example:
923 * IP-Src = 10.0.0.0/255.0.0.0
924 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
925 *
926 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
927 * For a don't care mask it gives us a 0
928 *
929 * The check if don't care and the mask adjustment if mask=0 is done for VLAN
930 * and MAC stuff on an upper level (due to missing information on this level).
931 * For these guys we can discard them if they are value=0 and mask=0.
932 *
933 * Further the all masks are one-padded for better hardware efficiency.
934 */
935static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
936 struct filer_table *tab)
937{
938 switch (flag) {
939 /* 3bit */
940 case RQFCR_PID_PRI:
941 if (!(value | mask))
942 return;
943 mask |= RQFCR_PID_PRI_MASK;
944 break;
945 /* 8bit */
946 case RQFCR_PID_L4P:
947 case RQFCR_PID_TOS:
948 if (!~(mask | RQFCR_PID_L4P_MASK))
949 return;
950 if (!mask)
951 mask = ~0;
952 else
953 mask |= RQFCR_PID_L4P_MASK;
954 break;
955 /* 12bit */
956 case RQFCR_PID_VID:
957 if (!(value | mask))
958 return;
959 mask |= RQFCR_PID_VID_MASK;
960 break;
961 /* 16bit */
962 case RQFCR_PID_DPT:
963 case RQFCR_PID_SPT:
964 case RQFCR_PID_ETY:
965 if (!~(mask | RQFCR_PID_PORT_MASK))
966 return;
967 if (!mask)
968 mask = ~0;
969 else
970 mask |= RQFCR_PID_PORT_MASK;
971 break;
972 /* 24bit */
973 case RQFCR_PID_DAH:
974 case RQFCR_PID_DAL:
975 case RQFCR_PID_SAH:
976 case RQFCR_PID_SAL:
977 if (!(value | mask))
978 return;
979 mask |= RQFCR_PID_MAC_MASK;
980 break;
981 /* for all real 32bit masks */
982 default:
983 if (!~mask)
984 return;
985 if (!mask)
986 mask = ~0;
987 break;
988 }
989 gfar_set_general_attribute(value, mask, flag, tab);
990}
991
992/* Translates value and mask for UDP, TCP or SCTP */
993static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
994 struct ethtool_tcpip4_spec *mask,
995 struct filer_table *tab)
996{
997 gfar_set_attribute(be32_to_cpu(value->ip4src),
998 be32_to_cpu(mask->ip4src),
999 RQFCR_PID_SIA, tab);
1000 gfar_set_attribute(be32_to_cpu(value->ip4dst),
1001 be32_to_cpu(mask->ip4dst),
1002 RQFCR_PID_DIA, tab);
1003 gfar_set_attribute(be16_to_cpu(value->pdst),
1004 be16_to_cpu(mask->pdst),
1005 RQFCR_PID_DPT, tab);
1006 gfar_set_attribute(be16_to_cpu(value->psrc),
1007 be16_to_cpu(mask->psrc),
1008 RQFCR_PID_SPT, tab);
1009 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1010}
1011
1012/* Translates value and mask for RAW-IP4 */
1013static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
1014 struct ethtool_usrip4_spec *mask,
1015 struct filer_table *tab)
1016{
1017 gfar_set_attribute(be32_to_cpu(value->ip4src),
1018 be32_to_cpu(mask->ip4src),
1019 RQFCR_PID_SIA, tab);
1020 gfar_set_attribute(be32_to_cpu(value->ip4dst),
1021 be32_to_cpu(mask->ip4dst),
1022 RQFCR_PID_DIA, tab);
1023 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1024 gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
1025 gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
1026 be32_to_cpu(mask->l4_4_bytes),
1027 RQFCR_PID_ARB, tab);
1028
1029}
1030
1031/* Translates value and mask for ETHER spec */
1032static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
1033 struct filer_table *tab)
1034{
1035 u32 upper_temp_mask = 0;
1036 u32 lower_temp_mask = 0;
1037
1038 /* Source address */
1039 if (!is_broadcast_ether_addr(mask->h_source)) {
1040 if (is_zero_ether_addr(mask->h_source)) {
1041 upper_temp_mask = 0xFFFFFFFF;
1042 lower_temp_mask = 0xFFFFFFFF;
1043 } else {
1044 upper_temp_mask = mask->h_source[0] << 16 |
1045 mask->h_source[1] << 8 |
1046 mask->h_source[2];
1047 lower_temp_mask = mask->h_source[3] << 16 |
1048 mask->h_source[4] << 8 |
1049 mask->h_source[5];
1050 }
1051 /* Upper 24bit */
1052 gfar_set_attribute(value->h_source[0] << 16 |
1053 value->h_source[1] << 8 |
1054 value->h_source[2],
1055 upper_temp_mask, RQFCR_PID_SAH, tab);
1056 /* And the same for the lower part */
1057 gfar_set_attribute(value->h_source[3] << 16 |
1058 value->h_source[4] << 8 |
1059 value->h_source[5],
1060 lower_temp_mask, RQFCR_PID_SAL, tab);
1061 }
1062 /* Destination address */
1063 if (!is_broadcast_ether_addr(mask->h_dest)) {
1064 /* Special for destination is limited broadcast */
1065 if ((is_broadcast_ether_addr(value->h_dest) &&
1066 is_zero_ether_addr(mask->h_dest))) {
1067 gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1068 } else {
1069 if (is_zero_ether_addr(mask->h_dest)) {
1070 upper_temp_mask = 0xFFFFFFFF;
1071 lower_temp_mask = 0xFFFFFFFF;
1072 } else {
1073 upper_temp_mask = mask->h_dest[0] << 16 |
1074 mask->h_dest[1] << 8 |
1075 mask->h_dest[2];
1076 lower_temp_mask = mask->h_dest[3] << 16 |
1077 mask->h_dest[4] << 8 |
1078 mask->h_dest[5];
1079 }
1080
1081 /* Upper 24bit */
1082 gfar_set_attribute(value->h_dest[0] << 16 |
1083 value->h_dest[1] << 8 |
1084 value->h_dest[2],
1085 upper_temp_mask, RQFCR_PID_DAH, tab);
1086 /* And the same for the lower part */
1087 gfar_set_attribute(value->h_dest[3] << 16 |
1088 value->h_dest[4] << 8 |
1089 value->h_dest[5],
1090 lower_temp_mask, RQFCR_PID_DAL, tab);
1091 }
1092 }
1093
1094 gfar_set_attribute(be16_to_cpu(value->h_proto),
1095 be16_to_cpu(mask->h_proto),
1096 RQFCR_PID_ETY, tab);
1097}
1098
1099static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1100{
1101 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1102}
1103
1104static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1105{
1106 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1107}
1108
1109static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1110{
1111 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1112}
1113
1114static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1115{
1116 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1117}
1118
1119static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1120{
1121 return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1122 VLAN_PRIO_SHIFT;
1123}
1124
1125static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1126{
1127 return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1128 VLAN_PRIO_SHIFT;
1129}
1130
1131/* Convert a rule to binary filter format of gianfar */
1132static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1133 struct filer_table *tab)
1134{
1135 u32 vlan = 0, vlan_mask = 0;
1136 u32 id = 0, id_mask = 0;
1137 u32 cfi = 0, cfi_mask = 0;
1138 u32 prio = 0, prio_mask = 0;
1139 u32 old_index = tab->index;
1140
1141 /* Check if vlan is wanted */
1142 if ((rule->flow_type & FLOW_EXT) &&
1143 (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1144 if (!rule->m_ext.vlan_tci)
1145 rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1146
1147 vlan = RQFPR_VLN;
1148 vlan_mask = RQFPR_VLN;
1149
1150 /* Separate the fields */
1151 id = vlan_tci_vid(rule);
1152 id_mask = vlan_tci_vidm(rule);
1153 cfi = vlan_tci_cfi(rule);
1154 cfi_mask = vlan_tci_cfim(rule);
1155 prio = vlan_tci_prio(rule);
1156 prio_mask = vlan_tci_priom(rule);
1157
1158 if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
1159 vlan |= RQFPR_CFI;
1160 vlan_mask |= RQFPR_CFI;
1161 } else if (cfi != VLAN_TAG_PRESENT &&
1162 cfi_mask == VLAN_TAG_PRESENT) {
1163 vlan_mask |= RQFPR_CFI;
1164 }
1165 }
1166
1167 switch (rule->flow_type & ~FLOW_EXT) {
1168 case TCP_V4_FLOW:
1169 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1170 RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1171 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1172 &rule->m_u.tcp_ip4_spec, tab);
1173 break;
1174 case UDP_V4_FLOW:
1175 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1176 RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1177 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1178 &rule->m_u.udp_ip4_spec, tab);
1179 break;
1180 case SCTP_V4_FLOW:
1181 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1182 tab);
1183 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1184 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1185 (struct ethtool_tcpip4_spec *)&rule->m_u,
1186 tab);
1187 break;
1188 case IP_USER_FLOW:
1189 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1190 tab);
1191 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1192 (struct ethtool_usrip4_spec *) &rule->m_u,
1193 tab);
1194 break;
1195 case ETHER_FLOW:
1196 if (vlan)
1197 gfar_set_parse_bits(vlan, vlan_mask, tab);
1198 gfar_set_ether((struct ethhdr *) &rule->h_u,
1199 (struct ethhdr *) &rule->m_u, tab);
1200 break;
1201 default:
1202 return -1;
1203 }
1204
1205 /* Set the vlan attributes in the end */
1206 if (vlan) {
1207 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1208 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1209 }
1210
1211 /* If there has been nothing written till now, it must be a default */
1212 if (tab->index == old_index) {
1213 gfar_set_mask(0xFFFFFFFF, tab);
1214 tab->fe[tab->index].ctrl = 0x20;
1215 tab->fe[tab->index].prop = 0x0;
1216 tab->index++;
1217 }
1218
1219 /* Remove last AND */
1220 tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1221
1222 /* Specify which queue to use or to drop */
1223 if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1224 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1225 else
1226 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1227
1228 /* Only big enough entries can be clustered */
1229 if (tab->index > (old_index + 2)) {
1230 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1231 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1232 }
1233
1234 /* In rare cases the cache can be full while there is
1235 * free space in hw
1236 */
1237 if (tab->index > MAX_FILER_CACHE_IDX - 1)
1238 return -EBUSY;
1239
1240 return 0;
1241}
1242
1243/* Write the bit-pattern from software's buffer to hardware registers */
1244static int gfar_write_filer_table(struct gfar_private *priv,
1245 struct filer_table *tab)
1246{
1247 u32 i = 0;
1248 if (tab->index > MAX_FILER_IDX - 1)
1249 return -EBUSY;
1250
1251 /* Fill regular entries */
1252 for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
1253 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1254 /* Fill the rest with fall-troughs */
1255 for (; i < MAX_FILER_IDX; i++)
1256 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1257 /* Last entry must be default accept
1258 * because that's what people expect
1259 */
1260 gfar_write_filer(priv, i, 0x20, 0x0);
1261
1262 return 0;
1263}
1264
1265static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1266 struct gfar_private *priv)
1267{
1268
1269 if (flow->flow_type & FLOW_EXT) {
1270 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1271 netdev_warn(priv->ndev,
1272 "User-specific data not supported!\n");
1273 if (~flow->m_ext.vlan_etype)
1274 netdev_warn(priv->ndev,
1275 "VLAN-etype not supported!\n");
1276 }
1277 if (flow->flow_type == IP_USER_FLOW)
1278 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1279 netdev_warn(priv->ndev,
1280 "IP-Version differing from IPv4 not supported!\n");
1281
1282 return 0;
1283}
1284
1285static int gfar_process_filer_changes(struct gfar_private *priv)
1286{
1287 struct ethtool_flow_spec_container *j;
1288 struct filer_table *tab;
1289 s32 ret = 0;
1290
1291 /* So index is set to zero, too! */
1292 tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1293 if (tab == NULL)
1294 return -ENOMEM;
1295
1296 /* Now convert the existing filer data from flow_spec into
1297 * filer tables binary format
1298 */
1299 list_for_each_entry(j, &priv->rx_list.list, list) {
1300 ret = gfar_convert_to_filer(&j->fs, tab);
1301 if (ret == -EBUSY) {
1302 netdev_err(priv->ndev,
1303 "Rule not added: No free space!\n");
1304 goto end;
1305 }
1306 if (ret == -1) {
1307 netdev_err(priv->ndev,
1308 "Rule not added: Unsupported Flow-type!\n");
1309 goto end;
1310 }
1311 }
1312
1313 /* Write everything to hardware */
1314 ret = gfar_write_filer_table(priv, tab);
1315 if (ret == -EBUSY) {
1316 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1317 goto end;
1318 }
1319
1320end:
1321 kfree(tab);
1322 return ret;
1323}
1324
1325static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1326{
1327 u32 i = 0;
1328
1329 for (i = 0; i < sizeof(flow->m_u); i++)
1330 flow->m_u.hdata[i] ^= 0xFF;
1331
1332 flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1333 flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1334 flow->m_ext.data[0] ^= cpu_to_be32(~0);
1335 flow->m_ext.data[1] ^= cpu_to_be32(~0);
1336}
1337
1338static int gfar_add_cls(struct gfar_private *priv,
1339 struct ethtool_rx_flow_spec *flow)
1340{
1341 struct ethtool_flow_spec_container *temp, *comp;
1342 int ret = 0;
1343
1344 temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1345 if (temp == NULL)
1346 return -ENOMEM;
1347 memcpy(&temp->fs, flow, sizeof(temp->fs));
1348
1349 gfar_invert_masks(&temp->fs);
1350 ret = gfar_check_capability(&temp->fs, priv);
1351 if (ret)
1352 goto clean_mem;
1353 /* Link in the new element at the right @location */
1354 if (list_empty(&priv->rx_list.list)) {
1355 ret = gfar_check_filer_hardware(priv);
1356 if (ret != 0)
1357 goto clean_mem;
1358 list_add(&temp->list, &priv->rx_list.list);
1359 goto process;
1360 } else {
1361 list_for_each_entry(comp, &priv->rx_list.list, list) {
1362 if (comp->fs.location > flow->location) {
1363 list_add_tail(&temp->list, &comp->list);
1364 goto process;
1365 }
1366 if (comp->fs.location == flow->location) {
1367 netdev_err(priv->ndev,
1368 "Rule not added: ID %d not free!\n",
1369 flow->location);
1370 ret = -EBUSY;
1371 goto clean_mem;
1372 }
1373 }
1374 list_add_tail(&temp->list, &priv->rx_list.list);
1375 }
1376
1377process:
1378 priv->rx_list.count++;
1379 ret = gfar_process_filer_changes(priv);
1380 if (ret)
1381 goto clean_list;
1382 return ret;
1383
1384clean_list:
1385 priv->rx_list.count--;
1386 list_del(&temp->list);
1387clean_mem:
1388 kfree(temp);
1389 return ret;
1390}
1391
1392static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1393{
1394 struct ethtool_flow_spec_container *comp;
1395 u32 ret = -EINVAL;
1396
1397 if (list_empty(&priv->rx_list.list))
1398 return ret;
1399
1400 list_for_each_entry(comp, &priv->rx_list.list, list) {
1401 if (comp->fs.location == loc) {
1402 list_del(&comp->list);
1403 kfree(comp);
1404 priv->rx_list.count--;
1405 gfar_process_filer_changes(priv);
1406 ret = 0;
1407 break;
1408 }
1409 }
1410
1411 return ret;
1412}
1413
1414static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1415{
1416 struct ethtool_flow_spec_container *comp;
1417 u32 ret = -EINVAL;
1418
1419 list_for_each_entry(comp, &priv->rx_list.list, list) {
1420 if (comp->fs.location == cmd->fs.location) {
1421 memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1422 gfar_invert_masks(&cmd->fs);
1423 ret = 0;
1424 break;
1425 }
1426 }
1427
1428 return ret;
1429}
1430
1431static int gfar_get_cls_all(struct gfar_private *priv,
1432 struct ethtool_rxnfc *cmd, u32 *rule_locs)
1433{
1434 struct ethtool_flow_spec_container *comp;
1435 u32 i = 0;
1436
1437 list_for_each_entry(comp, &priv->rx_list.list, list) {
1438 if (i == cmd->rule_cnt)
1439 return -EMSGSIZE;
1440 rule_locs[i] = comp->fs.location;
1441 i++;
1442 }
1443
1444 cmd->data = MAX_FILER_IDX;
1445 cmd->rule_cnt = i;
1446
1447 return 0;
1448}
1449
1450static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1451{
1452 struct gfar_private *priv = netdev_priv(dev);
1453 int ret = 0;
1454
1455 if (test_bit(GFAR_RESETTING, &priv->state))
1456 return -EBUSY;
1457
1458 mutex_lock(&priv->rx_queue_access);
1459
1460 switch (cmd->cmd) {
1461 case ETHTOOL_SRXFH:
1462 ret = gfar_set_hash_opts(priv, cmd);
1463 break;
1464 case ETHTOOL_SRXCLSRLINS:
1465 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1466 cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1467 cmd->fs.location >= MAX_FILER_IDX) {
1468 ret = -EINVAL;
1469 break;
1470 }
1471 ret = gfar_add_cls(priv, &cmd->fs);
1472 break;
1473 case ETHTOOL_SRXCLSRLDEL:
1474 ret = gfar_del_cls(priv, cmd->fs.location);
1475 break;
1476 default:
1477 ret = -EINVAL;
1478 }
1479
1480 mutex_unlock(&priv->rx_queue_access);
1481
1482 return ret;
1483}
1484
1485static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1486 u32 *rule_locs)
1487{
1488 struct gfar_private *priv = netdev_priv(dev);
1489 int ret = 0;
1490
1491 switch (cmd->cmd) {
1492 case ETHTOOL_GRXRINGS:
1493 cmd->data = priv->num_rx_queues;
1494 break;
1495 case ETHTOOL_GRXCLSRLCNT:
1496 cmd->rule_cnt = priv->rx_list.count;
1497 break;
1498 case ETHTOOL_GRXCLSRULE:
1499 ret = gfar_get_cls(priv, cmd);
1500 break;
1501 case ETHTOOL_GRXCLSRLALL:
1502 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1503 break;
1504 default:
1505 ret = -EINVAL;
1506 break;
1507 }
1508
1509 return ret;
1510}
1511
1512int gfar_phc_index = -1;
1513EXPORT_SYMBOL(gfar_phc_index);
1514
1515static int gfar_get_ts_info(struct net_device *dev,
1516 struct ethtool_ts_info *info)
1517{
1518 struct gfar_private *priv = netdev_priv(dev);
1519
1520 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1521 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1522 SOF_TIMESTAMPING_SOFTWARE;
1523 info->phc_index = -1;
1524 return 0;
1525 }
1526 info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1527 SOF_TIMESTAMPING_RX_HARDWARE |
1528 SOF_TIMESTAMPING_RAW_HARDWARE;
1529 info->phc_index = gfar_phc_index;
1530 info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1531 (1 << HWTSTAMP_TX_ON);
1532 info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1533 (1 << HWTSTAMP_FILTER_ALL);
1534 return 0;
1535}
1536
1537const struct ethtool_ops gfar_ethtool_ops = {
1538 .get_drvinfo = gfar_gdrvinfo,
1539 .get_regs_len = gfar_reglen,
1540 .get_regs = gfar_get_regs,
1541 .get_link = ethtool_op_get_link,
1542 .get_coalesce = gfar_gcoalesce,
1543 .set_coalesce = gfar_scoalesce,
1544 .get_ringparam = gfar_gringparam,
1545 .set_ringparam = gfar_sringparam,
1546 .get_pauseparam = gfar_gpauseparam,
1547 .set_pauseparam = gfar_spauseparam,
1548 .get_strings = gfar_gstrings,
1549 .get_sset_count = gfar_sset_count,
1550 .get_ethtool_stats = gfar_fill_stats,
1551 .get_msglevel = gfar_get_msglevel,
1552 .set_msglevel = gfar_set_msglevel,
1553#ifdef CONFIG_PM
1554 .get_wol = gfar_get_wol,
1555 .set_wol = gfar_set_wol,
1556#endif
1557 .set_rxnfc = gfar_set_nfc,
1558 .get_rxnfc = gfar_get_nfc,
1559 .get_ts_info = gfar_get_ts_info,
1560 .get_link_ksettings = phy_ethtool_get_link_ksettings,
1561 .set_link_ksettings = phy_ethtool_set_link_ksettings,
1562};
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/init.h>
26#include <linux/delay.h>
27#include <linux/netdevice.h>
28#include <linux/etherdevice.h>
29#include <linux/net_tstamp.h>
30#include <linux/skbuff.h>
31#include <linux/spinlock.h>
32#include <linux/mm.h>
33
34#include <asm/io.h>
35#include <asm/irq.h>
36#include <asm/uaccess.h>
37#include <linux/module.h>
38#include <linux/crc32.h>
39#include <asm/types.h>
40#include <linux/ethtool.h>
41#include <linux/mii.h>
42#include <linux/phy.h>
43#include <linux/sort.h>
44#include <linux/if_vlan.h>
45
46#include "gianfar.h"
47
48extern void gfar_start(struct net_device *dev);
49extern int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit);
50
51#define GFAR_MAX_COAL_USECS 0xffff
52#define GFAR_MAX_COAL_FRAMES 0xff
53static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
54 u64 * buf);
55static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
56static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals);
57static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals);
58static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals);
59static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals);
60static void gfar_gdrvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo);
61
62static const char stat_gstrings[][ETH_GSTRING_LEN] = {
63 "rx-dropped-by-kernel",
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 */
125static 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 */
140static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy, u64 * buf)
141{
142 int i;
143 struct gfar_private *priv = netdev_priv(dev);
144 struct gfar __iomem *regs = priv->gfargrp[0].regs;
145 u64 *extra = (u64 *) & priv->extra_stats;
146
147 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
148 u32 __iomem *rmon = (u32 __iomem *) ®s->rmon;
149 struct gfar_stats *stats = (struct gfar_stats *) buf;
150
151 for (i = 0; i < GFAR_RMON_LEN; i++)
152 stats->rmon[i] = (u64) gfar_read(&rmon[i]);
153
154 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
155 stats->extra[i] = extra[i];
156 } else
157 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
158 buf[i] = extra[i];
159}
160
161static int gfar_sset_count(struct net_device *dev, int sset)
162{
163 struct gfar_private *priv = netdev_priv(dev);
164
165 switch (sset) {
166 case ETH_SS_STATS:
167 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
168 return GFAR_STATS_LEN;
169 else
170 return GFAR_EXTRA_STATS_LEN;
171 default:
172 return -EOPNOTSUPP;
173 }
174}
175
176/* Fills in the drvinfo structure with some basic info */
177static void gfar_gdrvinfo(struct net_device *dev, struct
178 ethtool_drvinfo *drvinfo)
179{
180 strncpy(drvinfo->driver, DRV_NAME, GFAR_INFOSTR_LEN);
181 strncpy(drvinfo->version, gfar_driver_version, GFAR_INFOSTR_LEN);
182 strncpy(drvinfo->fw_version, "N/A", GFAR_INFOSTR_LEN);
183 strncpy(drvinfo->bus_info, "N/A", GFAR_INFOSTR_LEN);
184 drvinfo->regdump_len = 0;
185 drvinfo->eedump_len = 0;
186}
187
188
189static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
190{
191 struct gfar_private *priv = netdev_priv(dev);
192 struct phy_device *phydev = priv->phydev;
193
194 if (NULL == phydev)
195 return -ENODEV;
196
197 return phy_ethtool_sset(phydev, cmd);
198}
199
200
201/* Return the current settings in the ethtool_cmd structure */
202static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
203{
204 struct gfar_private *priv = netdev_priv(dev);
205 struct phy_device *phydev = priv->phydev;
206 struct gfar_priv_rx_q *rx_queue = NULL;
207 struct gfar_priv_tx_q *tx_queue = NULL;
208
209 if (NULL == phydev)
210 return -ENODEV;
211 tx_queue = priv->tx_queue[0];
212 rx_queue = priv->rx_queue[0];
213
214 /* etsec-1.7 and older versions have only one txic
215 * and rxic regs although they support multiple queues */
216 cmd->maxtxpkt = get_icft_value(tx_queue->txic);
217 cmd->maxrxpkt = get_icft_value(rx_queue->rxic);
218
219 return phy_ethtool_gset(phydev, cmd);
220}
221
222/* Return the length of the register structure */
223static int gfar_reglen(struct net_device *dev)
224{
225 return sizeof (struct gfar);
226}
227
228/* Return a dump of the GFAR register space */
229static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs, 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 */
242static unsigned int gfar_usecs2ticks(struct gfar_private *priv, unsigned int usecs)
243{
244 unsigned int count;
245
246 /* The timer is different, depending on the interface speed */
247 switch (priv->phydev->speed) {
248 case SPEED_1000:
249 count = GFAR_GBIT_TIME;
250 break;
251 case SPEED_100:
252 count = GFAR_100_TIME;
253 break;
254 case SPEED_10:
255 default:
256 count = GFAR_10_TIME;
257 break;
258 }
259
260 /* Make sure we return a number greater than 0
261 * if usecs > 0 */
262 return (usecs * 1000 + count - 1) / count;
263}
264
265/* Convert ethernet clock ticks to microseconds */
266static unsigned int gfar_ticks2usecs(struct gfar_private *priv, unsigned int ticks)
267{
268 unsigned int count;
269
270 /* The timer is different, depending on the interface speed */
271 switch (priv->phydev->speed) {
272 case SPEED_1000:
273 count = GFAR_GBIT_TIME;
274 break;
275 case SPEED_100:
276 count = GFAR_100_TIME;
277 break;
278 case SPEED_10:
279 default:
280 count = GFAR_10_TIME;
281 break;
282 }
283
284 /* Make sure we return a number greater than 0 */
285 /* if ticks is > 0 */
286 return (ticks * count) / 1000;
287}
288
289/* Get the coalescing parameters, and put them in the cvals
290 * structure. */
291static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals)
292{
293 struct gfar_private *priv = netdev_priv(dev);
294 struct gfar_priv_rx_q *rx_queue = NULL;
295 struct gfar_priv_tx_q *tx_queue = NULL;
296 unsigned long rxtime;
297 unsigned long rxcount;
298 unsigned long txtime;
299 unsigned long txcount;
300
301 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
302 return -EOPNOTSUPP;
303
304 if (NULL == priv->phydev)
305 return -ENODEV;
306
307 rx_queue = priv->rx_queue[0];
308 tx_queue = priv->tx_queue[0];
309
310 rxtime = get_ictt_value(rx_queue->rxic);
311 rxcount = get_icft_value(rx_queue->rxic);
312 txtime = get_ictt_value(tx_queue->txic);
313 txcount = get_icft_value(tx_queue->txic);
314 cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
315 cvals->rx_max_coalesced_frames = rxcount;
316
317 cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
318 cvals->tx_max_coalesced_frames = txcount;
319
320 cvals->use_adaptive_rx_coalesce = 0;
321 cvals->use_adaptive_tx_coalesce = 0;
322
323 cvals->pkt_rate_low = 0;
324 cvals->rx_coalesce_usecs_low = 0;
325 cvals->rx_max_coalesced_frames_low = 0;
326 cvals->tx_coalesce_usecs_low = 0;
327 cvals->tx_max_coalesced_frames_low = 0;
328
329 /* When the packet rate is below pkt_rate_high but above
330 * pkt_rate_low (both measured in packets per second) the
331 * normal {rx,tx}_* coalescing parameters are used.
332 */
333
334 /* When the packet rate is (measured in packets per second)
335 * is above pkt_rate_high, the {rx,tx}_*_high parameters are
336 * used.
337 */
338 cvals->pkt_rate_high = 0;
339 cvals->rx_coalesce_usecs_high = 0;
340 cvals->rx_max_coalesced_frames_high = 0;
341 cvals->tx_coalesce_usecs_high = 0;
342 cvals->tx_max_coalesced_frames_high = 0;
343
344 /* How often to do adaptive coalescing packet rate sampling,
345 * measured in seconds. Must not be zero.
346 */
347 cvals->rate_sample_interval = 0;
348
349 return 0;
350}
351
352/* Change the coalescing values.
353 * Both cvals->*_usecs and cvals->*_frames have to be > 0
354 * in order for coalescing to be active
355 */
356static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals)
357{
358 struct gfar_private *priv = netdev_priv(dev);
359 int i = 0;
360
361 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
362 return -EOPNOTSUPP;
363
364 /* Set up rx coalescing */
365 /* As of now, we will enable/disable coalescing for all
366 * queues together in case of eTSEC2, this will be modified
367 * along with the ethtool interface */
368 if ((cvals->rx_coalesce_usecs == 0) ||
369 (cvals->rx_max_coalesced_frames == 0)) {
370 for (i = 0; i < priv->num_rx_queues; i++)
371 priv->rx_queue[i]->rxcoalescing = 0;
372 } else {
373 for (i = 0; i < priv->num_rx_queues; i++)
374 priv->rx_queue[i]->rxcoalescing = 1;
375 }
376
377 if (NULL == priv->phydev)
378 return -ENODEV;
379
380 /* Check the bounds of the values */
381 if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
382 pr_info("Coalescing is limited to %d microseconds\n",
383 GFAR_MAX_COAL_USECS);
384 return -EINVAL;
385 }
386
387 if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
388 pr_info("Coalescing is limited to %d frames\n",
389 GFAR_MAX_COAL_FRAMES);
390 return -EINVAL;
391 }
392
393 for (i = 0; i < priv->num_rx_queues; i++) {
394 priv->rx_queue[i]->rxic = mk_ic_value(
395 cvals->rx_max_coalesced_frames,
396 gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
397 }
398
399 /* Set up tx coalescing */
400 if ((cvals->tx_coalesce_usecs == 0) ||
401 (cvals->tx_max_coalesced_frames == 0)) {
402 for (i = 0; i < priv->num_tx_queues; i++)
403 priv->tx_queue[i]->txcoalescing = 0;
404 } else {
405 for (i = 0; i < priv->num_tx_queues; i++)
406 priv->tx_queue[i]->txcoalescing = 1;
407 }
408
409 /* Check the bounds of the values */
410 if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
411 pr_info("Coalescing is limited to %d microseconds\n",
412 GFAR_MAX_COAL_USECS);
413 return -EINVAL;
414 }
415
416 if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
417 pr_info("Coalescing is limited to %d frames\n",
418 GFAR_MAX_COAL_FRAMES);
419 return -EINVAL;
420 }
421
422 for (i = 0; i < priv->num_tx_queues; i++) {
423 priv->tx_queue[i]->txic = mk_ic_value(
424 cvals->tx_max_coalesced_frames,
425 gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
426 }
427
428 gfar_configure_coalescing(priv, 0xFF, 0xFF);
429
430 return 0;
431}
432
433/* Fills in rvals with the current ring parameters. Currently,
434 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
435 * jumbo are ignored by the driver */
436static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals)
437{
438 struct gfar_private *priv = netdev_priv(dev);
439 struct gfar_priv_tx_q *tx_queue = NULL;
440 struct gfar_priv_rx_q *rx_queue = NULL;
441
442 tx_queue = priv->tx_queue[0];
443 rx_queue = priv->rx_queue[0];
444
445 rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
446 rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
447 rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
448 rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
449
450 /* Values changeable by the user. The valid values are
451 * in the range 1 to the "*_max_pending" counterpart above.
452 */
453 rvals->rx_pending = rx_queue->rx_ring_size;
454 rvals->rx_mini_pending = rx_queue->rx_ring_size;
455 rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
456 rvals->tx_pending = tx_queue->tx_ring_size;
457}
458
459/* Change the current ring parameters, stopping the controller if
460 * necessary so that we don't mess things up while we're in
461 * motion. We wait for the ring to be clean before reallocating
462 * the rings. */
463static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals)
464{
465 struct gfar_private *priv = netdev_priv(dev);
466 int err = 0, i = 0;
467
468 if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
469 return -EINVAL;
470
471 if (!is_power_of_2(rvals->rx_pending)) {
472 netdev_err(dev, "Ring sizes must be a power of 2\n");
473 return -EINVAL;
474 }
475
476 if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
477 return -EINVAL;
478
479 if (!is_power_of_2(rvals->tx_pending)) {
480 netdev_err(dev, "Ring sizes must be a power of 2\n");
481 return -EINVAL;
482 }
483
484
485 if (dev->flags & IFF_UP) {
486 unsigned long flags;
487
488 /* Halt TX and RX, and process the frames which
489 * have already been received */
490 local_irq_save(flags);
491 lock_tx_qs(priv);
492 lock_rx_qs(priv);
493
494 gfar_halt(dev);
495
496 unlock_rx_qs(priv);
497 unlock_tx_qs(priv);
498 local_irq_restore(flags);
499
500 for (i = 0; i < priv->num_rx_queues; i++)
501 gfar_clean_rx_ring(priv->rx_queue[i],
502 priv->rx_queue[i]->rx_ring_size);
503
504 /* Now we take down the rings to rebuild them */
505 stop_gfar(dev);
506 }
507
508 /* Change the size */
509 for (i = 0; i < priv->num_rx_queues; i++) {
510 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
511 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
512 priv->tx_queue[i]->num_txbdfree = priv->tx_queue[i]->tx_ring_size;
513 }
514
515 /* Rebuild the rings with the new size */
516 if (dev->flags & IFF_UP) {
517 err = startup_gfar(dev);
518 netif_tx_wake_all_queues(dev);
519 }
520 return err;
521}
522
523int gfar_set_features(struct net_device *dev, netdev_features_t features)
524{
525 struct gfar_private *priv = netdev_priv(dev);
526 unsigned long flags;
527 int err = 0, i = 0;
528 netdev_features_t changed = dev->features ^ features;
529
530 if (changed & (NETIF_F_HW_VLAN_TX|NETIF_F_HW_VLAN_RX))
531 gfar_vlan_mode(dev, features);
532
533 if (!(changed & NETIF_F_RXCSUM))
534 return 0;
535
536 if (dev->flags & IFF_UP) {
537 /* Halt TX and RX, and process the frames which
538 * have already been received */
539 local_irq_save(flags);
540 lock_tx_qs(priv);
541 lock_rx_qs(priv);
542
543 gfar_halt(dev);
544
545 unlock_tx_qs(priv);
546 unlock_rx_qs(priv);
547 local_irq_restore(flags);
548
549 for (i = 0; i < priv->num_rx_queues; i++)
550 gfar_clean_rx_ring(priv->rx_queue[i],
551 priv->rx_queue[i]->rx_ring_size);
552
553 /* Now we take down the rings to rebuild them */
554 stop_gfar(dev);
555
556 dev->features = features;
557
558 err = startup_gfar(dev);
559 netif_tx_wake_all_queues(dev);
560 }
561 return err;
562}
563
564static uint32_t gfar_get_msglevel(struct net_device *dev)
565{
566 struct gfar_private *priv = netdev_priv(dev);
567 return priv->msg_enable;
568}
569
570static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
571{
572 struct gfar_private *priv = netdev_priv(dev);
573 priv->msg_enable = data;
574}
575
576#ifdef CONFIG_PM
577static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
578{
579 struct gfar_private *priv = netdev_priv(dev);
580
581 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) {
582 wol->supported = WAKE_MAGIC;
583 wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0;
584 } else {
585 wol->supported = wol->wolopts = 0;
586 }
587}
588
589static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
590{
591 struct gfar_private *priv = netdev_priv(dev);
592 unsigned long flags;
593
594 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
595 wol->wolopts != 0)
596 return -EINVAL;
597
598 if (wol->wolopts & ~WAKE_MAGIC)
599 return -EINVAL;
600
601 device_set_wakeup_enable(&dev->dev, wol->wolopts & WAKE_MAGIC);
602
603 spin_lock_irqsave(&priv->bflock, flags);
604 priv->wol_en = !!device_may_wakeup(&dev->dev);
605 spin_unlock_irqrestore(&priv->bflock, flags);
606
607 return 0;
608}
609#endif
610
611static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
612{
613 u32 fcr = 0x0, fpr = FPR_FILER_MASK;
614
615 if (ethflow & RXH_L2DA) {
616 fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH |
617 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
618 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
619 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
620 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
621 priv->cur_filer_idx = priv->cur_filer_idx - 1;
622
623 fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
624 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
625 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
626 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
627 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
628 priv->cur_filer_idx = priv->cur_filer_idx - 1;
629 }
630
631 if (ethflow & RXH_VLAN) {
632 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
633 RQFCR_AND | RQFCR_HASHTBL_0;
634 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
635 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
636 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
637 priv->cur_filer_idx = priv->cur_filer_idx - 1;
638 }
639
640 if (ethflow & RXH_IP_SRC) {
641 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
642 RQFCR_AND | RQFCR_HASHTBL_0;
643 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
644 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
645 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
646 priv->cur_filer_idx = priv->cur_filer_idx - 1;
647 }
648
649 if (ethflow & (RXH_IP_DST)) {
650 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
651 RQFCR_AND | RQFCR_HASHTBL_0;
652 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
653 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
654 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
655 priv->cur_filer_idx = priv->cur_filer_idx - 1;
656 }
657
658 if (ethflow & RXH_L3_PROTO) {
659 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
660 RQFCR_AND | RQFCR_HASHTBL_0;
661 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
662 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
663 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
664 priv->cur_filer_idx = priv->cur_filer_idx - 1;
665 }
666
667 if (ethflow & RXH_L4_B_0_1) {
668 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
669 RQFCR_AND | RQFCR_HASHTBL_0;
670 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
671 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
672 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
673 priv->cur_filer_idx = priv->cur_filer_idx - 1;
674 }
675
676 if (ethflow & RXH_L4_B_2_3) {
677 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
678 RQFCR_AND | RQFCR_HASHTBL_0;
679 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
680 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
681 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
682 priv->cur_filer_idx = priv->cur_filer_idx - 1;
683 }
684}
685
686static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow, u64 class)
687{
688 unsigned int last_rule_idx = priv->cur_filer_idx;
689 unsigned int cmp_rqfpr;
690 unsigned int *local_rqfpr;
691 unsigned int *local_rqfcr;
692 int i = 0x0, k = 0x0;
693 int j = MAX_FILER_IDX, l = 0x0;
694 int ret = 1;
695
696 local_rqfpr = kmalloc(sizeof(unsigned int) * (MAX_FILER_IDX + 1),
697 GFP_KERNEL);
698 local_rqfcr = kmalloc(sizeof(unsigned int) * (MAX_FILER_IDX + 1),
699 GFP_KERNEL);
700 if (!local_rqfpr || !local_rqfcr) {
701 pr_err("Out of memory\n");
702 ret = 0;
703 goto err;
704 }
705
706 switch (class) {
707 case TCP_V4_FLOW:
708 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
709 break;
710 case UDP_V4_FLOW:
711 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
712 break;
713 case TCP_V6_FLOW:
714 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
715 break;
716 case UDP_V6_FLOW:
717 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
718 break;
719 default:
720 pr_err("Right now this class is not supported\n");
721 ret = 0;
722 goto err;
723 }
724
725 for (i = 0; i < MAX_FILER_IDX + 1; i++) {
726 local_rqfpr[j] = priv->ftp_rqfpr[i];
727 local_rqfcr[j] = priv->ftp_rqfcr[i];
728 j--;
729 if ((priv->ftp_rqfcr[i] == (RQFCR_PID_PARSE |
730 RQFCR_CLE |RQFCR_AND)) &&
731 (priv->ftp_rqfpr[i] == cmp_rqfpr))
732 break;
733 }
734
735 if (i == MAX_FILER_IDX + 1) {
736 pr_err("No parse rule found, can't create hash rules\n");
737 ret = 0;
738 goto err;
739 }
740
741 /* If a match was found, then it begins the starting of a cluster rule
742 * if it was already programmed, we need to overwrite these rules
743 */
744 for (l = i+1; l < MAX_FILER_IDX; l++) {
745 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
746 !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
747 priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
748 RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
749 priv->ftp_rqfpr[l] = FPR_FILER_MASK;
750 gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
751 priv->ftp_rqfpr[l]);
752 break;
753 }
754
755 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
756 (priv->ftp_rqfcr[l] & RQFCR_AND))
757 continue;
758 else {
759 local_rqfpr[j] = priv->ftp_rqfpr[l];
760 local_rqfcr[j] = priv->ftp_rqfcr[l];
761 j--;
762 }
763 }
764
765 priv->cur_filer_idx = l - 1;
766 last_rule_idx = l;
767
768 /* hash rules */
769 ethflow_to_filer_rules(priv, ethflow);
770
771 /* Write back the popped out rules again */
772 for (k = j+1; k < MAX_FILER_IDX; k++) {
773 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
774 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
775 gfar_write_filer(priv, priv->cur_filer_idx,
776 local_rqfcr[k], local_rqfpr[k]);
777 if (!priv->cur_filer_idx)
778 break;
779 priv->cur_filer_idx = priv->cur_filer_idx - 1;
780 }
781
782err:
783 kfree(local_rqfcr);
784 kfree(local_rqfpr);
785 return ret;
786}
787
788static int gfar_set_hash_opts(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
789{
790 /* write the filer rules here */
791 if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
792 return -EINVAL;
793
794 return 0;
795}
796
797static int gfar_check_filer_hardware(struct gfar_private *priv)
798{
799 struct gfar __iomem *regs = NULL;
800 u32 i;
801
802 regs = priv->gfargrp[0].regs;
803
804 /* Check if we are in FIFO mode */
805 i = gfar_read(®s->ecntrl);
806 i &= ECNTRL_FIFM;
807 if (i == ECNTRL_FIFM) {
808 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
809 i = gfar_read(®s->rctrl);
810 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
811 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
812 netdev_info(priv->ndev,
813 "Receive Queue Filtering enabled\n");
814 } else {
815 netdev_warn(priv->ndev,
816 "Receive Queue Filtering disabled\n");
817 return -EOPNOTSUPP;
818 }
819 }
820 /* Or in standard mode */
821 else {
822 i = gfar_read(®s->rctrl);
823 i &= RCTRL_PRSDEP_MASK;
824 if (i == RCTRL_PRSDEP_MASK) {
825 netdev_info(priv->ndev,
826 "Receive Queue Filtering enabled\n");
827 } else {
828 netdev_warn(priv->ndev,
829 "Receive Queue Filtering disabled\n");
830 return -EOPNOTSUPP;
831 }
832 }
833
834 /* Sets the properties for arbitrary filer rule
835 * to the first 4 Layer 4 Bytes */
836 regs->rbifx = 0xC0C1C2C3;
837 return 0;
838}
839
840static int gfar_comp_asc(const void *a, const void *b)
841{
842 return memcmp(a, b, 4);
843}
844
845static int gfar_comp_desc(const void *a, const void *b)
846{
847 return -memcmp(a, b, 4);
848}
849
850static void gfar_swap(void *a, void *b, int size)
851{
852 u32 *_a = a;
853 u32 *_b = b;
854
855 swap(_a[0], _b[0]);
856 swap(_a[1], _b[1]);
857 swap(_a[2], _b[2]);
858 swap(_a[3], _b[3]);
859}
860
861/* Write a mask to filer cache */
862static void gfar_set_mask(u32 mask, struct filer_table *tab)
863{
864 tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
865 tab->fe[tab->index].prop = mask;
866 tab->index++;
867}
868
869/* Sets parse bits (e.g. IP or TCP) */
870static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
871{
872 gfar_set_mask(mask, tab);
873 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE
874 | RQFCR_AND;
875 tab->fe[tab->index].prop = value;
876 tab->index++;
877}
878
879static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
880 struct filer_table *tab)
881{
882 gfar_set_mask(mask, tab);
883 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
884 tab->fe[tab->index].prop = value;
885 tab->index++;
886}
887
888/*
889 * For setting a tuple of value and mask of type flag
890 * Example:
891 * IP-Src = 10.0.0.0/255.0.0.0
892 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
893 *
894 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
895 * For a don't care mask it gives us a 0
896 *
897 * The check if don't care and the mask adjustment if mask=0 is done for VLAN
898 * and MAC stuff on an upper level (due to missing information on this level).
899 * For these guys we can discard them if they are value=0 and mask=0.
900 *
901 * Further the all masks are one-padded for better hardware efficiency.
902 */
903static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
904 struct filer_table *tab)
905{
906 switch (flag) {
907 /* 3bit */
908 case RQFCR_PID_PRI:
909 if (!(value | mask))
910 return;
911 mask |= RQFCR_PID_PRI_MASK;
912 break;
913 /* 8bit */
914 case RQFCR_PID_L4P:
915 case RQFCR_PID_TOS:
916 if (!~(mask | RQFCR_PID_L4P_MASK))
917 return;
918 if (!mask)
919 mask = ~0;
920 else
921 mask |= RQFCR_PID_L4P_MASK;
922 break;
923 /* 12bit */
924 case RQFCR_PID_VID:
925 if (!(value | mask))
926 return;
927 mask |= RQFCR_PID_VID_MASK;
928 break;
929 /* 16bit */
930 case RQFCR_PID_DPT:
931 case RQFCR_PID_SPT:
932 case RQFCR_PID_ETY:
933 if (!~(mask | RQFCR_PID_PORT_MASK))
934 return;
935 if (!mask)
936 mask = ~0;
937 else
938 mask |= RQFCR_PID_PORT_MASK;
939 break;
940 /* 24bit */
941 case RQFCR_PID_DAH:
942 case RQFCR_PID_DAL:
943 case RQFCR_PID_SAH:
944 case RQFCR_PID_SAL:
945 if (!(value | mask))
946 return;
947 mask |= RQFCR_PID_MAC_MASK;
948 break;
949 /* for all real 32bit masks */
950 default:
951 if (!~mask)
952 return;
953 if (!mask)
954 mask = ~0;
955 break;
956 }
957 gfar_set_general_attribute(value, mask, flag, tab);
958}
959
960/* Translates value and mask for UDP, TCP or SCTP */
961static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
962 struct ethtool_tcpip4_spec *mask, struct filer_table *tab)
963{
964 gfar_set_attribute(value->ip4src, mask->ip4src, RQFCR_PID_SIA, tab);
965 gfar_set_attribute(value->ip4dst, mask->ip4dst, RQFCR_PID_DIA, tab);
966 gfar_set_attribute(value->pdst, mask->pdst, RQFCR_PID_DPT, tab);
967 gfar_set_attribute(value->psrc, mask->psrc, RQFCR_PID_SPT, tab);
968 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
969}
970
971/* Translates value and mask for RAW-IP4 */
972static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
973 struct ethtool_usrip4_spec *mask, struct filer_table *tab)
974{
975 gfar_set_attribute(value->ip4src, mask->ip4src, RQFCR_PID_SIA, tab);
976 gfar_set_attribute(value->ip4dst, mask->ip4dst, RQFCR_PID_DIA, tab);
977 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
978 gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
979 gfar_set_attribute(value->l4_4_bytes, mask->l4_4_bytes, RQFCR_PID_ARB,
980 tab);
981
982}
983
984/* Translates value and mask for ETHER spec */
985static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
986 struct filer_table *tab)
987{
988 u32 upper_temp_mask = 0;
989 u32 lower_temp_mask = 0;
990 /* Source address */
991 if (!is_broadcast_ether_addr(mask->h_source)) {
992
993 if (is_zero_ether_addr(mask->h_source)) {
994 upper_temp_mask = 0xFFFFFFFF;
995 lower_temp_mask = 0xFFFFFFFF;
996 } else {
997 upper_temp_mask = mask->h_source[0] << 16
998 | mask->h_source[1] << 8
999 | mask->h_source[2];
1000 lower_temp_mask = mask->h_source[3] << 16
1001 | mask->h_source[4] << 8
1002 | mask->h_source[5];
1003 }
1004 /* Upper 24bit */
1005 gfar_set_attribute(
1006 value->h_source[0] << 16 | value->h_source[1]
1007 << 8 | value->h_source[2],
1008 upper_temp_mask, RQFCR_PID_SAH, tab);
1009 /* And the same for the lower part */
1010 gfar_set_attribute(
1011 value->h_source[3] << 16 | value->h_source[4]
1012 << 8 | value->h_source[5],
1013 lower_temp_mask, RQFCR_PID_SAL, tab);
1014 }
1015 /* Destination address */
1016 if (!is_broadcast_ether_addr(mask->h_dest)) {
1017
1018 /* Special for destination is limited broadcast */
1019 if ((is_broadcast_ether_addr(value->h_dest)
1020 && is_zero_ether_addr(mask->h_dest))) {
1021 gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1022 } else {
1023
1024 if (is_zero_ether_addr(mask->h_dest)) {
1025 upper_temp_mask = 0xFFFFFFFF;
1026 lower_temp_mask = 0xFFFFFFFF;
1027 } else {
1028 upper_temp_mask = mask->h_dest[0] << 16
1029 | mask->h_dest[1] << 8
1030 | mask->h_dest[2];
1031 lower_temp_mask = mask->h_dest[3] << 16
1032 | mask->h_dest[4] << 8
1033 | mask->h_dest[5];
1034 }
1035
1036 /* Upper 24bit */
1037 gfar_set_attribute(
1038 value->h_dest[0] << 16
1039 | value->h_dest[1] << 8
1040 | value->h_dest[2],
1041 upper_temp_mask, RQFCR_PID_DAH, tab);
1042 /* And the same for the lower part */
1043 gfar_set_attribute(
1044 value->h_dest[3] << 16
1045 | value->h_dest[4] << 8
1046 | value->h_dest[5],
1047 lower_temp_mask, RQFCR_PID_DAL, tab);
1048 }
1049 }
1050
1051 gfar_set_attribute(value->h_proto, mask->h_proto, RQFCR_PID_ETY, tab);
1052
1053}
1054
1055/* Convert a rule to binary filter format of gianfar */
1056static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1057 struct filer_table *tab)
1058{
1059 u32 vlan = 0, vlan_mask = 0;
1060 u32 id = 0, id_mask = 0;
1061 u32 cfi = 0, cfi_mask = 0;
1062 u32 prio = 0, prio_mask = 0;
1063
1064 u32 old_index = tab->index;
1065
1066 /* Check if vlan is wanted */
1067 if ((rule->flow_type & FLOW_EXT) && (rule->m_ext.vlan_tci != 0xFFFF)) {
1068 if (!rule->m_ext.vlan_tci)
1069 rule->m_ext.vlan_tci = 0xFFFF;
1070
1071 vlan = RQFPR_VLN;
1072 vlan_mask = RQFPR_VLN;
1073
1074 /* Separate the fields */
1075 id = rule->h_ext.vlan_tci & VLAN_VID_MASK;
1076 id_mask = rule->m_ext.vlan_tci & VLAN_VID_MASK;
1077 cfi = rule->h_ext.vlan_tci & VLAN_CFI_MASK;
1078 cfi_mask = rule->m_ext.vlan_tci & VLAN_CFI_MASK;
1079 prio = (rule->h_ext.vlan_tci & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;
1080 prio_mask = (rule->m_ext.vlan_tci & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;
1081
1082 if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
1083 vlan |= RQFPR_CFI;
1084 vlan_mask |= RQFPR_CFI;
1085 } else if (cfi != VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
1086 vlan_mask |= RQFPR_CFI;
1087 }
1088 }
1089
1090 switch (rule->flow_type & ~FLOW_EXT) {
1091 case TCP_V4_FLOW:
1092 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1093 RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1094 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1095 &rule->m_u.tcp_ip4_spec, tab);
1096 break;
1097 case UDP_V4_FLOW:
1098 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1099 RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1100 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1101 &rule->m_u.udp_ip4_spec, tab);
1102 break;
1103 case SCTP_V4_FLOW:
1104 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1105 tab);
1106 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1107 gfar_set_basic_ip((struct ethtool_tcpip4_spec *) &rule->h_u,
1108 (struct ethtool_tcpip4_spec *) &rule->m_u, tab);
1109 break;
1110 case IP_USER_FLOW:
1111 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1112 tab);
1113 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1114 (struct ethtool_usrip4_spec *) &rule->m_u, tab);
1115 break;
1116 case ETHER_FLOW:
1117 if (vlan)
1118 gfar_set_parse_bits(vlan, vlan_mask, tab);
1119 gfar_set_ether((struct ethhdr *) &rule->h_u,
1120 (struct ethhdr *) &rule->m_u, tab);
1121 break;
1122 default:
1123 return -1;
1124 }
1125
1126 /* Set the vlan attributes in the end */
1127 if (vlan) {
1128 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1129 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1130 }
1131
1132 /* If there has been nothing written till now, it must be a default */
1133 if (tab->index == old_index) {
1134 gfar_set_mask(0xFFFFFFFF, tab);
1135 tab->fe[tab->index].ctrl = 0x20;
1136 tab->fe[tab->index].prop = 0x0;
1137 tab->index++;
1138 }
1139
1140 /* Remove last AND */
1141 tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1142
1143 /* Specify which queue to use or to drop */
1144 if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1145 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1146 else
1147 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1148
1149 /* Only big enough entries can be clustered */
1150 if (tab->index > (old_index + 2)) {
1151 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1152 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1153 }
1154
1155 /* In rare cases the cache can be full while there is free space in hw */
1156 if (tab->index > MAX_FILER_CACHE_IDX - 1)
1157 return -EBUSY;
1158
1159 return 0;
1160}
1161
1162/* Copy size filer entries */
1163static void gfar_copy_filer_entries(struct gfar_filer_entry dst[0],
1164 struct gfar_filer_entry src[0], s32 size)
1165{
1166 while (size > 0) {
1167 size--;
1168 dst[size].ctrl = src[size].ctrl;
1169 dst[size].prop = src[size].prop;
1170 }
1171}
1172
1173/* Delete the contents of the filer-table between start and end
1174 * and collapse them */
1175static int gfar_trim_filer_entries(u32 begin, u32 end, struct filer_table *tab)
1176{
1177 int length;
1178 if (end > MAX_FILER_CACHE_IDX || end < begin)
1179 return -EINVAL;
1180
1181 end++;
1182 length = end - begin;
1183
1184 /* Copy */
1185 while (end < tab->index) {
1186 tab->fe[begin].ctrl = tab->fe[end].ctrl;
1187 tab->fe[begin++].prop = tab->fe[end++].prop;
1188
1189 }
1190 /* Fill up with don't cares */
1191 while (begin < tab->index) {
1192 tab->fe[begin].ctrl = 0x60;
1193 tab->fe[begin].prop = 0xFFFFFFFF;
1194 begin++;
1195 }
1196
1197 tab->index -= length;
1198 return 0;
1199}
1200
1201/* Make space on the wanted location */
1202static int gfar_expand_filer_entries(u32 begin, u32 length,
1203 struct filer_table *tab)
1204{
1205 if (length == 0 || length + tab->index > MAX_FILER_CACHE_IDX || begin
1206 > MAX_FILER_CACHE_IDX)
1207 return -EINVAL;
1208
1209 gfar_copy_filer_entries(&(tab->fe[begin + length]), &(tab->fe[begin]),
1210 tab->index - length + 1);
1211
1212 tab->index += length;
1213 return 0;
1214}
1215
1216static int gfar_get_next_cluster_start(int start, struct filer_table *tab)
1217{
1218 for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1); start++) {
1219 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE))
1220 == (RQFCR_AND | RQFCR_CLE))
1221 return start;
1222 }
1223 return -1;
1224}
1225
1226static int gfar_get_next_cluster_end(int start, struct filer_table *tab)
1227{
1228 for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1); start++) {
1229 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE))
1230 == (RQFCR_CLE))
1231 return start;
1232 }
1233 return -1;
1234}
1235
1236/*
1237 * Uses hardwares clustering option to reduce
1238 * the number of filer table entries
1239 */
1240static void gfar_cluster_filer(struct filer_table *tab)
1241{
1242 s32 i = -1, j, iend, jend;
1243
1244 while ((i = gfar_get_next_cluster_start(++i, tab)) != -1) {
1245 j = i;
1246 while ((j = gfar_get_next_cluster_start(++j, tab)) != -1) {
1247 /*
1248 * The cluster entries self and the previous one
1249 * (a mask) must be identical!
1250 */
1251 if (tab->fe[i].ctrl != tab->fe[j].ctrl)
1252 break;
1253 if (tab->fe[i].prop != tab->fe[j].prop)
1254 break;
1255 if (tab->fe[i - 1].ctrl != tab->fe[j - 1].ctrl)
1256 break;
1257 if (tab->fe[i - 1].prop != tab->fe[j - 1].prop)
1258 break;
1259 iend = gfar_get_next_cluster_end(i, tab);
1260 jend = gfar_get_next_cluster_end(j, tab);
1261 if (jend == -1 || iend == -1)
1262 break;
1263 /*
1264 * First we make some free space, where our cluster
1265 * element should be. Then we copy it there and finally
1266 * delete in from its old location.
1267 */
1268
1269 if (gfar_expand_filer_entries(iend, (jend - j), tab)
1270 == -EINVAL)
1271 break;
1272
1273 gfar_copy_filer_entries(&(tab->fe[iend + 1]),
1274 &(tab->fe[jend + 1]), jend - j);
1275
1276 if (gfar_trim_filer_entries(jend - 1,
1277 jend + (jend - j), tab) == -EINVAL)
1278 return;
1279
1280 /* Mask out cluster bit */
1281 tab->fe[iend].ctrl &= ~(RQFCR_CLE);
1282 }
1283 }
1284}
1285
1286/* Swaps the masked bits of a1<>a2 and b1<>b2 */
1287static void gfar_swap_bits(struct gfar_filer_entry *a1,
1288 struct gfar_filer_entry *a2, struct gfar_filer_entry *b1,
1289 struct gfar_filer_entry *b2, u32 mask)
1290{
1291 u32 temp[4];
1292 temp[0] = a1->ctrl & mask;
1293 temp[1] = a2->ctrl & mask;
1294 temp[2] = b1->ctrl & mask;
1295 temp[3] = b2->ctrl & mask;
1296
1297 a1->ctrl &= ~mask;
1298 a2->ctrl &= ~mask;
1299 b1->ctrl &= ~mask;
1300 b2->ctrl &= ~mask;
1301
1302 a1->ctrl |= temp[1];
1303 a2->ctrl |= temp[0];
1304 b1->ctrl |= temp[3];
1305 b2->ctrl |= temp[2];
1306}
1307
1308/*
1309 * Generate a list consisting of masks values with their start and
1310 * end of validity and block as indicator for parts belonging
1311 * together (glued by ANDs) in mask_table
1312 */
1313static u32 gfar_generate_mask_table(struct gfar_mask_entry *mask_table,
1314 struct filer_table *tab)
1315{
1316 u32 i, and_index = 0, block_index = 1;
1317
1318 for (i = 0; i < tab->index; i++) {
1319
1320 /* LSByte of control = 0 sets a mask */
1321 if (!(tab->fe[i].ctrl & 0xF)) {
1322 mask_table[and_index].mask = tab->fe[i].prop;
1323 mask_table[and_index].start = i;
1324 mask_table[and_index].block = block_index;
1325 if (and_index >= 1)
1326 mask_table[and_index - 1].end = i - 1;
1327 and_index++;
1328 }
1329 /* cluster starts and ends will be separated because they should
1330 * hold their position */
1331 if (tab->fe[i].ctrl & RQFCR_CLE)
1332 block_index++;
1333 /* A not set AND indicates the end of a depended block */
1334 if (!(tab->fe[i].ctrl & RQFCR_AND))
1335 block_index++;
1336
1337 }
1338
1339 mask_table[and_index - 1].end = i - 1;
1340
1341 return and_index;
1342}
1343
1344/*
1345 * Sorts the entries of mask_table by the values of the masks.
1346 * Important: The 0xFF80 flags of the first and last entry of a
1347 * block must hold their position (which queue, CLusterEnable, ReJEct,
1348 * AND)
1349 */
1350static void gfar_sort_mask_table(struct gfar_mask_entry *mask_table,
1351 struct filer_table *temp_table, u32 and_index)
1352{
1353 /* Pointer to compare function (_asc or _desc) */
1354 int (*gfar_comp)(const void *, const void *);
1355
1356 u32 i, size = 0, start = 0, prev = 1;
1357 u32 old_first, old_last, new_first, new_last;
1358
1359 gfar_comp = &gfar_comp_desc;
1360
1361 for (i = 0; i < and_index; i++) {
1362
1363 if (prev != mask_table[i].block) {
1364 old_first = mask_table[start].start + 1;
1365 old_last = mask_table[i - 1].end;
1366 sort(mask_table + start, size,
1367 sizeof(struct gfar_mask_entry),
1368 gfar_comp, &gfar_swap);
1369
1370 /* Toggle order for every block. This makes the
1371 * thing more efficient! */
1372 if (gfar_comp == gfar_comp_desc)
1373 gfar_comp = &gfar_comp_asc;
1374 else
1375 gfar_comp = &gfar_comp_desc;
1376
1377 new_first = mask_table[start].start + 1;
1378 new_last = mask_table[i - 1].end;
1379
1380 gfar_swap_bits(&temp_table->fe[new_first],
1381 &temp_table->fe[old_first],
1382 &temp_table->fe[new_last],
1383 &temp_table->fe[old_last],
1384 RQFCR_QUEUE | RQFCR_CLE |
1385 RQFCR_RJE | RQFCR_AND
1386 );
1387
1388 start = i;
1389 size = 0;
1390 }
1391 size++;
1392 prev = mask_table[i].block;
1393 }
1394
1395}
1396
1397/*
1398 * Reduces the number of masks needed in the filer table to save entries
1399 * This is done by sorting the masks of a depended block. A depended block is
1400 * identified by gluing ANDs or CLE. The sorting order toggles after every
1401 * block. Of course entries in scope of a mask must change their location with
1402 * it.
1403 */
1404static int gfar_optimize_filer_masks(struct filer_table *tab)
1405{
1406 struct filer_table *temp_table;
1407 struct gfar_mask_entry *mask_table;
1408
1409 u32 and_index = 0, previous_mask = 0, i = 0, j = 0, size = 0;
1410 s32 ret = 0;
1411
1412 /* We need a copy of the filer table because
1413 * we want to change its order */
1414 temp_table = kmemdup(tab, sizeof(*temp_table), GFP_KERNEL);
1415 if (temp_table == NULL)
1416 return -ENOMEM;
1417
1418 mask_table = kcalloc(MAX_FILER_CACHE_IDX / 2 + 1,
1419 sizeof(struct gfar_mask_entry), GFP_KERNEL);
1420
1421 if (mask_table == NULL) {
1422 ret = -ENOMEM;
1423 goto end;
1424 }
1425
1426 and_index = gfar_generate_mask_table(mask_table, tab);
1427
1428 gfar_sort_mask_table(mask_table, temp_table, and_index);
1429
1430 /* Now we can copy the data from our duplicated filer table to
1431 * the real one in the order the mask table says */
1432 for (i = 0; i < and_index; i++) {
1433 size = mask_table[i].end - mask_table[i].start + 1;
1434 gfar_copy_filer_entries(&(tab->fe[j]),
1435 &(temp_table->fe[mask_table[i].start]), size);
1436 j += size;
1437 }
1438
1439 /* And finally we just have to check for duplicated masks and drop the
1440 * second ones */
1441 for (i = 0; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1442 if (tab->fe[i].ctrl == 0x80) {
1443 previous_mask = i++;
1444 break;
1445 }
1446 }
1447 for (; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1448 if (tab->fe[i].ctrl == 0x80) {
1449 if (tab->fe[i].prop == tab->fe[previous_mask].prop) {
1450 /* Two identical ones found!
1451 * So drop the second one! */
1452 gfar_trim_filer_entries(i, i, tab);
1453 } else
1454 /* Not identical! */
1455 previous_mask = i;
1456 }
1457 }
1458
1459 kfree(mask_table);
1460end: kfree(temp_table);
1461 return ret;
1462}
1463
1464/* Write the bit-pattern from software's buffer to hardware registers */
1465static int gfar_write_filer_table(struct gfar_private *priv,
1466 struct filer_table *tab)
1467{
1468 u32 i = 0;
1469 if (tab->index > MAX_FILER_IDX - 1)
1470 return -EBUSY;
1471
1472 /* Avoid inconsistent filer table to be processed */
1473 lock_rx_qs(priv);
1474
1475 /* Fill regular entries */
1476 for (; i < MAX_FILER_IDX - 1 && (tab->fe[i].ctrl | tab->fe[i].ctrl); i++)
1477 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1478 /* Fill the rest with fall-troughs */
1479 for (; i < MAX_FILER_IDX - 1; i++)
1480 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1481 /* Last entry must be default accept
1482 * because that's what people expect */
1483 gfar_write_filer(priv, i, 0x20, 0x0);
1484
1485 unlock_rx_qs(priv);
1486
1487 return 0;
1488}
1489
1490static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1491 struct gfar_private *priv)
1492{
1493
1494 if (flow->flow_type & FLOW_EXT) {
1495 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1496 netdev_warn(priv->ndev,
1497 "User-specific data not supported!\n");
1498 if (~flow->m_ext.vlan_etype)
1499 netdev_warn(priv->ndev,
1500 "VLAN-etype not supported!\n");
1501 }
1502 if (flow->flow_type == IP_USER_FLOW)
1503 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1504 netdev_warn(priv->ndev,
1505 "IP-Version differing from IPv4 not supported!\n");
1506
1507 return 0;
1508}
1509
1510static int gfar_process_filer_changes(struct gfar_private *priv)
1511{
1512 struct ethtool_flow_spec_container *j;
1513 struct filer_table *tab;
1514 s32 i = 0;
1515 s32 ret = 0;
1516
1517 /* So index is set to zero, too! */
1518 tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1519 if (tab == NULL)
1520 return -ENOMEM;
1521
1522 /* Now convert the existing filer data from flow_spec into
1523 * filer tables binary format */
1524 list_for_each_entry(j, &priv->rx_list.list, list) {
1525 ret = gfar_convert_to_filer(&j->fs, tab);
1526 if (ret == -EBUSY) {
1527 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1528 goto end;
1529 }
1530 if (ret == -1) {
1531 netdev_err(priv->ndev, "Rule not added: Unsupported Flow-type!\n");
1532 goto end;
1533 }
1534 }
1535
1536 i = tab->index;
1537
1538 /* Optimizations to save entries */
1539 gfar_cluster_filer(tab);
1540 gfar_optimize_filer_masks(tab);
1541
1542 pr_debug("\n\tSummary:\n"
1543 "\tData on hardware: %d\n"
1544 "\tCompression rate: %d%%\n",
1545 tab->index, 100 - (100 * tab->index) / i);
1546
1547 /* Write everything to hardware */
1548 ret = gfar_write_filer_table(priv, tab);
1549 if (ret == -EBUSY) {
1550 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1551 goto end;
1552 }
1553
1554end: kfree(tab);
1555 return ret;
1556}
1557
1558static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1559{
1560 u32 i = 0;
1561
1562 for (i = 0; i < sizeof(flow->m_u); i++)
1563 flow->m_u.hdata[i] ^= 0xFF;
1564
1565 flow->m_ext.vlan_etype ^= 0xFFFF;
1566 flow->m_ext.vlan_tci ^= 0xFFFF;
1567 flow->m_ext.data[0] ^= ~0;
1568 flow->m_ext.data[1] ^= ~0;
1569}
1570
1571static int gfar_add_cls(struct gfar_private *priv,
1572 struct ethtool_rx_flow_spec *flow)
1573{
1574 struct ethtool_flow_spec_container *temp, *comp;
1575 int ret = 0;
1576
1577 temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1578 if (temp == NULL)
1579 return -ENOMEM;
1580 memcpy(&temp->fs, flow, sizeof(temp->fs));
1581
1582 gfar_invert_masks(&temp->fs);
1583 ret = gfar_check_capability(&temp->fs, priv);
1584 if (ret)
1585 goto clean_mem;
1586 /* Link in the new element at the right @location */
1587 if (list_empty(&priv->rx_list.list)) {
1588 ret = gfar_check_filer_hardware(priv);
1589 if (ret != 0)
1590 goto clean_mem;
1591 list_add(&temp->list, &priv->rx_list.list);
1592 goto process;
1593 } else {
1594
1595 list_for_each_entry(comp, &priv->rx_list.list, list) {
1596 if (comp->fs.location > flow->location) {
1597 list_add_tail(&temp->list, &comp->list);
1598 goto process;
1599 }
1600 if (comp->fs.location == flow->location) {
1601 netdev_err(priv->ndev,
1602 "Rule not added: ID %d not free!\n",
1603 flow->location);
1604 ret = -EBUSY;
1605 goto clean_mem;
1606 }
1607 }
1608 list_add_tail(&temp->list, &priv->rx_list.list);
1609 }
1610
1611process:
1612 ret = gfar_process_filer_changes(priv);
1613 if (ret)
1614 goto clean_list;
1615 priv->rx_list.count++;
1616 return ret;
1617
1618clean_list:
1619 list_del(&temp->list);
1620clean_mem:
1621 kfree(temp);
1622 return ret;
1623}
1624
1625static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1626{
1627 struct ethtool_flow_spec_container *comp;
1628 u32 ret = -EINVAL;
1629
1630 if (list_empty(&priv->rx_list.list))
1631 return ret;
1632
1633 list_for_each_entry(comp, &priv->rx_list.list, list) {
1634 if (comp->fs.location == loc) {
1635 list_del(&comp->list);
1636 kfree(comp);
1637 priv->rx_list.count--;
1638 gfar_process_filer_changes(priv);
1639 ret = 0;
1640 break;
1641 }
1642 }
1643
1644 return ret;
1645
1646}
1647
1648static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1649{
1650 struct ethtool_flow_spec_container *comp;
1651 u32 ret = -EINVAL;
1652
1653 list_for_each_entry(comp, &priv->rx_list.list, list) {
1654 if (comp->fs.location == cmd->fs.location) {
1655 memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1656 gfar_invert_masks(&cmd->fs);
1657 ret = 0;
1658 break;
1659 }
1660 }
1661
1662 return ret;
1663}
1664
1665static int gfar_get_cls_all(struct gfar_private *priv,
1666 struct ethtool_rxnfc *cmd, u32 *rule_locs)
1667{
1668 struct ethtool_flow_spec_container *comp;
1669 u32 i = 0;
1670
1671 list_for_each_entry(comp, &priv->rx_list.list, list) {
1672 if (i == cmd->rule_cnt)
1673 return -EMSGSIZE;
1674 rule_locs[i] = comp->fs.location;
1675 i++;
1676 }
1677
1678 cmd->data = MAX_FILER_IDX;
1679 cmd->rule_cnt = i;
1680
1681 return 0;
1682}
1683
1684static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1685{
1686 struct gfar_private *priv = netdev_priv(dev);
1687 int ret = 0;
1688
1689 mutex_lock(&priv->rx_queue_access);
1690
1691 switch (cmd->cmd) {
1692 case ETHTOOL_SRXFH:
1693 ret = gfar_set_hash_opts(priv, cmd);
1694 break;
1695 case ETHTOOL_SRXCLSRLINS:
1696 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1697 cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1698 cmd->fs.location >= MAX_FILER_IDX) {
1699 ret = -EINVAL;
1700 break;
1701 }
1702 ret = gfar_add_cls(priv, &cmd->fs);
1703 break;
1704 case ETHTOOL_SRXCLSRLDEL:
1705 ret = gfar_del_cls(priv, cmd->fs.location);
1706 break;
1707 default:
1708 ret = -EINVAL;
1709 }
1710
1711 mutex_unlock(&priv->rx_queue_access);
1712
1713 return ret;
1714}
1715
1716static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1717 u32 *rule_locs)
1718{
1719 struct gfar_private *priv = netdev_priv(dev);
1720 int ret = 0;
1721
1722 switch (cmd->cmd) {
1723 case ETHTOOL_GRXRINGS:
1724 cmd->data = priv->num_rx_queues;
1725 break;
1726 case ETHTOOL_GRXCLSRLCNT:
1727 cmd->rule_cnt = priv->rx_list.count;
1728 break;
1729 case ETHTOOL_GRXCLSRULE:
1730 ret = gfar_get_cls(priv, cmd);
1731 break;
1732 case ETHTOOL_GRXCLSRLALL:
1733 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1734 break;
1735 default:
1736 ret = -EINVAL;
1737 break;
1738 }
1739
1740 return ret;
1741}
1742
1743int gfar_phc_index = -1;
1744EXPORT_SYMBOL(gfar_phc_index);
1745
1746static int gfar_get_ts_info(struct net_device *dev,
1747 struct ethtool_ts_info *info)
1748{
1749 struct gfar_private *priv = netdev_priv(dev);
1750
1751 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1752 info->so_timestamping =
1753 SOF_TIMESTAMPING_RX_SOFTWARE |
1754 SOF_TIMESTAMPING_SOFTWARE;
1755 info->phc_index = -1;
1756 return 0;
1757 }
1758 info->so_timestamping =
1759 SOF_TIMESTAMPING_TX_HARDWARE |
1760 SOF_TIMESTAMPING_RX_HARDWARE |
1761 SOF_TIMESTAMPING_RAW_HARDWARE;
1762 info->phc_index = gfar_phc_index;
1763 info->tx_types =
1764 (1 << HWTSTAMP_TX_OFF) |
1765 (1 << HWTSTAMP_TX_ON);
1766 info->rx_filters =
1767 (1 << HWTSTAMP_FILTER_NONE) |
1768 (1 << HWTSTAMP_FILTER_ALL);
1769 return 0;
1770}
1771
1772const struct ethtool_ops gfar_ethtool_ops = {
1773 .get_settings = gfar_gsettings,
1774 .set_settings = gfar_ssettings,
1775 .get_drvinfo = gfar_gdrvinfo,
1776 .get_regs_len = gfar_reglen,
1777 .get_regs = gfar_get_regs,
1778 .get_link = ethtool_op_get_link,
1779 .get_coalesce = gfar_gcoalesce,
1780 .set_coalesce = gfar_scoalesce,
1781 .get_ringparam = gfar_gringparam,
1782 .set_ringparam = gfar_sringparam,
1783 .get_strings = gfar_gstrings,
1784 .get_sset_count = gfar_sset_count,
1785 .get_ethtool_stats = gfar_fill_stats,
1786 .get_msglevel = gfar_get_msglevel,
1787 .set_msglevel = gfar_set_msglevel,
1788#ifdef CONFIG_PM
1789 .get_wol = gfar_get_wol,
1790 .set_wol = gfar_set_wol,
1791#endif
1792 .set_rxnfc = gfar_set_nfc,
1793 .get_rxnfc = gfar_get_nfc,
1794 .get_ts_info = gfar_get_ts_info,
1795};