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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * drivers/net/ethernet/freescale/gianfar_ethtool.c
4 *
5 * Gianfar Ethernet Driver
6 * Ethtool support for Gianfar Enet
7 * Based on e1000 ethtool support
8 *
9 * Author: Andy Fleming
10 * Maintainer: Kumar Gala
11 * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
12 *
13 * Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc.
14 */
15
16#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
17
18#include <linux/kernel.h>
19#include <linux/string.h>
20#include <linux/errno.h>
21#include <linux/interrupt.h>
22#include <linux/delay.h>
23#include <linux/netdevice.h>
24#include <linux/etherdevice.h>
25#include <linux/net_tstamp.h>
26#include <linux/skbuff.h>
27#include <linux/spinlock.h>
28#include <linux/mm.h>
29
30#include <asm/io.h>
31#include <asm/irq.h>
32#include <linux/uaccess.h>
33#include <linux/module.h>
34#include <linux/crc32.h>
35#include <asm/types.h>
36#include <linux/ethtool.h>
37#include <linux/mii.h>
38#include <linux/phy.h>
39#include <linux/sort.h>
40#include <linux/if_vlan.h>
41#include <linux/of.h>
42#include <linux/of_platform.h>
43#include <linux/platform_device.h>
44#include <linux/fsl/ptp_qoriq.h>
45
46#include "gianfar.h"
47
48#define GFAR_MAX_COAL_USECS 0xffff
49#define GFAR_MAX_COAL_FRAMES 0xff
50
51static const char stat_gstrings[][ETH_GSTRING_LEN] = {
52 /* extra stats */
53 "rx-allocation-errors",
54 "rx-large-frame-errors",
55 "rx-short-frame-errors",
56 "rx-non-octet-errors",
57 "rx-crc-errors",
58 "rx-overrun-errors",
59 "rx-busy-errors",
60 "rx-babbling-errors",
61 "rx-truncated-frames",
62 "ethernet-bus-error",
63 "tx-babbling-errors",
64 "tx-underrun-errors",
65 "tx-timeout-errors",
66 /* rmon stats */
67 "tx-rx-64-frames",
68 "tx-rx-65-127-frames",
69 "tx-rx-128-255-frames",
70 "tx-rx-256-511-frames",
71 "tx-rx-512-1023-frames",
72 "tx-rx-1024-1518-frames",
73 "tx-rx-1519-1522-good-vlan",
74 "rx-bytes",
75 "rx-packets",
76 "rx-fcs-errors",
77 "receive-multicast-packet",
78 "receive-broadcast-packet",
79 "rx-control-frame-packets",
80 "rx-pause-frame-packets",
81 "rx-unknown-op-code",
82 "rx-alignment-error",
83 "rx-frame-length-error",
84 "rx-code-error",
85 "rx-carrier-sense-error",
86 "rx-undersize-packets",
87 "rx-oversize-packets",
88 "rx-fragmented-frames",
89 "rx-jabber-frames",
90 "rx-dropped-frames",
91 "tx-byte-counter",
92 "tx-packets",
93 "tx-multicast-packets",
94 "tx-broadcast-packets",
95 "tx-pause-control-frames",
96 "tx-deferral-packets",
97 "tx-excessive-deferral-packets",
98 "tx-single-collision-packets",
99 "tx-multiple-collision-packets",
100 "tx-late-collision-packets",
101 "tx-excessive-collision-packets",
102 "tx-total-collision",
103 "reserved",
104 "tx-dropped-frames",
105 "tx-jabber-frames",
106 "tx-fcs-errors",
107 "tx-control-frames",
108 "tx-oversize-frames",
109 "tx-undersize-frames",
110 "tx-fragmented-frames",
111};
112
113/* Fill in a buffer with the strings which correspond to the
114 * stats */
115static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
116{
117 struct gfar_private *priv = netdev_priv(dev);
118
119 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
120 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
121 else
122 memcpy(buf, stat_gstrings,
123 GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
124}
125
126/* Fill in an array of 64-bit statistics from various sources.
127 * This array will be appended to the end of the ethtool_stats
128 * structure, and returned to user space
129 */
130static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
131 u64 *buf)
132{
133 int i;
134 struct gfar_private *priv = netdev_priv(dev);
135 struct gfar __iomem *regs = priv->gfargrp[0].regs;
136 atomic64_t *extra = (atomic64_t *)&priv->extra_stats;
137
138 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
139 buf[i] = atomic64_read(&extra[i]);
140
141 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
142 u32 __iomem *rmon = (u32 __iomem *) ®s->rmon;
143
144 for (; i < GFAR_STATS_LEN; i++, rmon++)
145 buf[i] = (u64) gfar_read(rmon);
146 }
147}
148
149static int gfar_sset_count(struct net_device *dev, int sset)
150{
151 struct gfar_private *priv = netdev_priv(dev);
152
153 switch (sset) {
154 case ETH_SS_STATS:
155 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
156 return GFAR_STATS_LEN;
157 else
158 return GFAR_EXTRA_STATS_LEN;
159 default:
160 return -EOPNOTSUPP;
161 }
162}
163
164/* Fills in the drvinfo structure with some basic info */
165static void gfar_gdrvinfo(struct net_device *dev,
166 struct ethtool_drvinfo *drvinfo)
167{
168 strscpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
169}
170
171/* Return the length of the register structure */
172static int gfar_reglen(struct net_device *dev)
173{
174 return sizeof (struct gfar);
175}
176
177/* Return a dump of the GFAR register space */
178static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
179 void *regbuf)
180{
181 int i;
182 struct gfar_private *priv = netdev_priv(dev);
183 u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
184 u32 *buf = (u32 *) regbuf;
185
186 for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
187 buf[i] = gfar_read(&theregs[i]);
188}
189
190/* Convert microseconds to ethernet clock ticks, which changes
191 * depending on what speed the controller is running at */
192static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
193 unsigned int usecs)
194{
195 struct net_device *ndev = priv->ndev;
196 struct phy_device *phydev = ndev->phydev;
197 unsigned int count;
198
199 /* The timer is different, depending on the interface speed */
200 switch (phydev->speed) {
201 case SPEED_1000:
202 count = GFAR_GBIT_TIME;
203 break;
204 case SPEED_100:
205 count = GFAR_100_TIME;
206 break;
207 case SPEED_10:
208 default:
209 count = GFAR_10_TIME;
210 break;
211 }
212
213 /* Make sure we return a number greater than 0
214 * if usecs > 0 */
215 return DIV_ROUND_UP(usecs * 1000, count);
216}
217
218/* Convert ethernet clock ticks to microseconds */
219static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
220 unsigned int ticks)
221{
222 struct net_device *ndev = priv->ndev;
223 struct phy_device *phydev = ndev->phydev;
224 unsigned int count;
225
226 /* The timer is different, depending on the interface speed */
227 switch (phydev->speed) {
228 case SPEED_1000:
229 count = GFAR_GBIT_TIME;
230 break;
231 case SPEED_100:
232 count = GFAR_100_TIME;
233 break;
234 case SPEED_10:
235 default:
236 count = GFAR_10_TIME;
237 break;
238 }
239
240 /* Make sure we return a number greater than 0 */
241 /* if ticks is > 0 */
242 return (ticks * count) / 1000;
243}
244
245/* Get the coalescing parameters, and put them in the cvals
246 * structure. */
247static int gfar_gcoalesce(struct net_device *dev,
248 struct ethtool_coalesce *cvals,
249 struct kernel_ethtool_coalesce *kernel_coal,
250 struct netlink_ext_ack *extack)
251{
252 struct gfar_private *priv = netdev_priv(dev);
253 struct gfar_priv_rx_q *rx_queue = NULL;
254 struct gfar_priv_tx_q *tx_queue = NULL;
255 unsigned long rxtime;
256 unsigned long rxcount;
257 unsigned long txtime;
258 unsigned long txcount;
259
260 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
261 return -EOPNOTSUPP;
262
263 if (!dev->phydev)
264 return -ENODEV;
265
266 rx_queue = priv->rx_queue[0];
267 tx_queue = priv->tx_queue[0];
268
269 rxtime = get_ictt_value(rx_queue->rxic);
270 rxcount = get_icft_value(rx_queue->rxic);
271 txtime = get_ictt_value(tx_queue->txic);
272 txcount = get_icft_value(tx_queue->txic);
273 cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
274 cvals->rx_max_coalesced_frames = rxcount;
275
276 cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
277 cvals->tx_max_coalesced_frames = txcount;
278
279 return 0;
280}
281
282/* Change the coalescing values.
283 * Both cvals->*_usecs and cvals->*_frames have to be > 0
284 * in order for coalescing to be active
285 */
286static int gfar_scoalesce(struct net_device *dev,
287 struct ethtool_coalesce *cvals,
288 struct kernel_ethtool_coalesce *kernel_coal,
289 struct netlink_ext_ack *extack)
290{
291 struct gfar_private *priv = netdev_priv(dev);
292 int i, err = 0;
293
294 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
295 return -EOPNOTSUPP;
296
297 if (!dev->phydev)
298 return -ENODEV;
299
300 /* Check the bounds of the values */
301 if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
302 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
303 GFAR_MAX_COAL_USECS);
304 return -EINVAL;
305 }
306
307 if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
308 netdev_info(dev, "Coalescing is limited to %d frames\n",
309 GFAR_MAX_COAL_FRAMES);
310 return -EINVAL;
311 }
312
313 /* Check the bounds of the values */
314 if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
315 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
316 GFAR_MAX_COAL_USECS);
317 return -EINVAL;
318 }
319
320 if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
321 netdev_info(dev, "Coalescing is limited to %d frames\n",
322 GFAR_MAX_COAL_FRAMES);
323 return -EINVAL;
324 }
325
326 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
327 cpu_relax();
328
329 /* Set up rx coalescing */
330 if ((cvals->rx_coalesce_usecs == 0) ||
331 (cvals->rx_max_coalesced_frames == 0)) {
332 for (i = 0; i < priv->num_rx_queues; i++)
333 priv->rx_queue[i]->rxcoalescing = 0;
334 } else {
335 for (i = 0; i < priv->num_rx_queues; i++)
336 priv->rx_queue[i]->rxcoalescing = 1;
337 }
338
339 for (i = 0; i < priv->num_rx_queues; i++) {
340 priv->rx_queue[i]->rxic = mk_ic_value(
341 cvals->rx_max_coalesced_frames,
342 gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
343 }
344
345 /* Set up tx coalescing */
346 if ((cvals->tx_coalesce_usecs == 0) ||
347 (cvals->tx_max_coalesced_frames == 0)) {
348 for (i = 0; i < priv->num_tx_queues; i++)
349 priv->tx_queue[i]->txcoalescing = 0;
350 } else {
351 for (i = 0; i < priv->num_tx_queues; i++)
352 priv->tx_queue[i]->txcoalescing = 1;
353 }
354
355 for (i = 0; i < priv->num_tx_queues; i++) {
356 priv->tx_queue[i]->txic = mk_ic_value(
357 cvals->tx_max_coalesced_frames,
358 gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
359 }
360
361 if (dev->flags & IFF_UP) {
362 stop_gfar(dev);
363 err = startup_gfar(dev);
364 } else {
365 gfar_mac_reset(priv);
366 }
367
368 clear_bit_unlock(GFAR_RESETTING, &priv->state);
369
370 return err;
371}
372
373/* Fills in rvals with the current ring parameters. Currently,
374 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
375 * jumbo are ignored by the driver */
376static void gfar_gringparam(struct net_device *dev,
377 struct ethtool_ringparam *rvals,
378 struct kernel_ethtool_ringparam *kernel_rvals,
379 struct netlink_ext_ack *extack)
380{
381 struct gfar_private *priv = netdev_priv(dev);
382 struct gfar_priv_tx_q *tx_queue = NULL;
383 struct gfar_priv_rx_q *rx_queue = NULL;
384
385 tx_queue = priv->tx_queue[0];
386 rx_queue = priv->rx_queue[0];
387
388 rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
389 rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
390 rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
391 rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
392
393 /* Values changeable by the user. The valid values are
394 * in the range 1 to the "*_max_pending" counterpart above.
395 */
396 rvals->rx_pending = rx_queue->rx_ring_size;
397 rvals->rx_mini_pending = rx_queue->rx_ring_size;
398 rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
399 rvals->tx_pending = tx_queue->tx_ring_size;
400}
401
402/* Change the current ring parameters, stopping the controller if
403 * necessary so that we don't mess things up while we're in motion.
404 */
405static int gfar_sringparam(struct net_device *dev,
406 struct ethtool_ringparam *rvals,
407 struct kernel_ethtool_ringparam *kernel_rvals,
408 struct netlink_ext_ack *extack)
409{
410 struct gfar_private *priv = netdev_priv(dev);
411 int err = 0, i;
412
413 if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
414 return -EINVAL;
415
416 if (!is_power_of_2(rvals->rx_pending)) {
417 netdev_err(dev, "Ring sizes must be a power of 2\n");
418 return -EINVAL;
419 }
420
421 if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
422 return -EINVAL;
423
424 if (!is_power_of_2(rvals->tx_pending)) {
425 netdev_err(dev, "Ring sizes must be a power of 2\n");
426 return -EINVAL;
427 }
428
429 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
430 cpu_relax();
431
432 if (dev->flags & IFF_UP)
433 stop_gfar(dev);
434
435 /* Change the sizes */
436 for (i = 0; i < priv->num_rx_queues; i++)
437 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
438
439 for (i = 0; i < priv->num_tx_queues; i++)
440 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
441
442 /* Rebuild the rings with the new size */
443 if (dev->flags & IFF_UP)
444 err = startup_gfar(dev);
445
446 clear_bit_unlock(GFAR_RESETTING, &priv->state);
447
448 return err;
449}
450
451static void gfar_gpauseparam(struct net_device *dev,
452 struct ethtool_pauseparam *epause)
453{
454 struct gfar_private *priv = netdev_priv(dev);
455
456 epause->autoneg = !!priv->pause_aneg_en;
457 epause->rx_pause = !!priv->rx_pause_en;
458 epause->tx_pause = !!priv->tx_pause_en;
459}
460
461static int gfar_spauseparam(struct net_device *dev,
462 struct ethtool_pauseparam *epause)
463{
464 struct gfar_private *priv = netdev_priv(dev);
465 struct phy_device *phydev = dev->phydev;
466 struct gfar __iomem *regs = priv->gfargrp[0].regs;
467
468 if (!phydev)
469 return -ENODEV;
470
471 if (!phy_validate_pause(phydev, epause))
472 return -EINVAL;
473
474 priv->rx_pause_en = priv->tx_pause_en = 0;
475 phy_set_asym_pause(phydev, epause->rx_pause, epause->tx_pause);
476 if (epause->rx_pause) {
477 priv->rx_pause_en = 1;
478
479 if (epause->tx_pause) {
480 priv->tx_pause_en = 1;
481 }
482 } else if (epause->tx_pause) {
483 priv->tx_pause_en = 1;
484 }
485
486 if (epause->autoneg)
487 priv->pause_aneg_en = 1;
488 else
489 priv->pause_aneg_en = 0;
490
491 if (!epause->autoneg) {
492 u32 tempval = gfar_read(®s->maccfg1);
493
494 tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
495
496 priv->tx_actual_en = 0;
497 if (priv->tx_pause_en) {
498 priv->tx_actual_en = 1;
499 tempval |= MACCFG1_TX_FLOW;
500 }
501
502 if (priv->rx_pause_en)
503 tempval |= MACCFG1_RX_FLOW;
504 gfar_write(®s->maccfg1, tempval);
505 }
506
507 return 0;
508}
509
510int gfar_set_features(struct net_device *dev, netdev_features_t features)
511{
512 netdev_features_t changed = dev->features ^ features;
513 struct gfar_private *priv = netdev_priv(dev);
514 int err = 0;
515
516 if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
517 NETIF_F_RXCSUM)))
518 return 0;
519
520 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
521 cpu_relax();
522
523 dev->features = features;
524
525 if (dev->flags & IFF_UP) {
526 /* Now we take down the rings to rebuild them */
527 stop_gfar(dev);
528 err = startup_gfar(dev);
529 } else {
530 gfar_mac_reset(priv);
531 }
532
533 clear_bit_unlock(GFAR_RESETTING, &priv->state);
534
535 return err;
536}
537
538static uint32_t gfar_get_msglevel(struct net_device *dev)
539{
540 struct gfar_private *priv = netdev_priv(dev);
541
542 return priv->msg_enable;
543}
544
545static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
546{
547 struct gfar_private *priv = netdev_priv(dev);
548
549 priv->msg_enable = data;
550}
551
552#ifdef CONFIG_PM
553static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
554{
555 struct gfar_private *priv = netdev_priv(dev);
556
557 wol->supported = 0;
558 wol->wolopts = 0;
559
560 if (priv->wol_supported & GFAR_WOL_MAGIC)
561 wol->supported |= WAKE_MAGIC;
562
563 if (priv->wol_supported & GFAR_WOL_FILER_UCAST)
564 wol->supported |= WAKE_UCAST;
565
566 if (priv->wol_opts & GFAR_WOL_MAGIC)
567 wol->wolopts |= WAKE_MAGIC;
568
569 if (priv->wol_opts & GFAR_WOL_FILER_UCAST)
570 wol->wolopts |= WAKE_UCAST;
571}
572
573static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
574{
575 struct gfar_private *priv = netdev_priv(dev);
576 u16 wol_opts = 0;
577 int err;
578
579 if (!priv->wol_supported && wol->wolopts)
580 return -EINVAL;
581
582 if (wol->wolopts & ~(WAKE_MAGIC | WAKE_UCAST))
583 return -EINVAL;
584
585 if (wol->wolopts & WAKE_MAGIC) {
586 wol_opts |= GFAR_WOL_MAGIC;
587 } else {
588 if (wol->wolopts & WAKE_UCAST)
589 wol_opts |= GFAR_WOL_FILER_UCAST;
590 }
591
592 wol_opts &= priv->wol_supported;
593 priv->wol_opts = 0;
594
595 err = device_set_wakeup_enable(priv->dev, wol_opts);
596 if (err)
597 return err;
598
599 priv->wol_opts = wol_opts;
600
601 return 0;
602}
603#endif
604
605static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
606{
607 u32 fcr = 0x0, fpr = FPR_FILER_MASK;
608
609 if (ethflow & RXH_L2DA) {
610 fcr = RQFCR_PID_DAH | RQFCR_CMP_NOMATCH |
611 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
612 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
613 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
614 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
615 priv->cur_filer_idx = priv->cur_filer_idx - 1;
616
617 fcr = RQFCR_PID_DAL | RQFCR_CMP_NOMATCH |
618 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
619 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
620 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
621 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
622 priv->cur_filer_idx = priv->cur_filer_idx - 1;
623 }
624
625 if (ethflow & RXH_VLAN) {
626 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
627 RQFCR_AND | RQFCR_HASHTBL_0;
628 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
629 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
630 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
631 priv->cur_filer_idx = priv->cur_filer_idx - 1;
632 }
633
634 if (ethflow & RXH_IP_SRC) {
635 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
636 RQFCR_AND | RQFCR_HASHTBL_0;
637 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
638 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
639 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
640 priv->cur_filer_idx = priv->cur_filer_idx - 1;
641 }
642
643 if (ethflow & (RXH_IP_DST)) {
644 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
645 RQFCR_AND | RQFCR_HASHTBL_0;
646 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
647 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
648 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
649 priv->cur_filer_idx = priv->cur_filer_idx - 1;
650 }
651
652 if (ethflow & RXH_L3_PROTO) {
653 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
654 RQFCR_AND | RQFCR_HASHTBL_0;
655 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
656 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
657 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
658 priv->cur_filer_idx = priv->cur_filer_idx - 1;
659 }
660
661 if (ethflow & RXH_L4_B_0_1) {
662 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
663 RQFCR_AND | RQFCR_HASHTBL_0;
664 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
665 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
666 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
667 priv->cur_filer_idx = priv->cur_filer_idx - 1;
668 }
669
670 if (ethflow & RXH_L4_B_2_3) {
671 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
672 RQFCR_AND | RQFCR_HASHTBL_0;
673 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
674 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
675 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
676 priv->cur_filer_idx = priv->cur_filer_idx - 1;
677 }
678}
679
680static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
681 u64 class)
682{
683 unsigned int cmp_rqfpr;
684 unsigned int *local_rqfpr;
685 unsigned int *local_rqfcr;
686 int i = 0x0, k = 0x0;
687 int j = MAX_FILER_IDX, l = 0x0;
688 int ret = 1;
689
690 local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
691 GFP_KERNEL);
692 local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
693 GFP_KERNEL);
694 if (!local_rqfpr || !local_rqfcr) {
695 ret = 0;
696 goto err;
697 }
698
699 switch (class) {
700 case TCP_V4_FLOW:
701 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
702 break;
703 case UDP_V4_FLOW:
704 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
705 break;
706 case TCP_V6_FLOW:
707 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
708 break;
709 case UDP_V6_FLOW:
710 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
711 break;
712 default:
713 netdev_err(priv->ndev,
714 "Right now this class is not supported\n");
715 ret = 0;
716 goto err;
717 }
718
719 for (i = 0; i < MAX_FILER_IDX + 1; i++) {
720 local_rqfpr[j] = priv->ftp_rqfpr[i];
721 local_rqfcr[j] = priv->ftp_rqfcr[i];
722 j--;
723 if ((priv->ftp_rqfcr[i] ==
724 (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
725 (priv->ftp_rqfpr[i] == cmp_rqfpr))
726 break;
727 }
728
729 if (i == MAX_FILER_IDX + 1) {
730 netdev_err(priv->ndev,
731 "No parse rule found, can't create hash rules\n");
732 ret = 0;
733 goto err;
734 }
735
736 /* If a match was found, then it begins the starting of a cluster rule
737 * if it was already programmed, we need to overwrite these rules
738 */
739 for (l = i+1; l < MAX_FILER_IDX; l++) {
740 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
741 !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
742 priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
743 RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
744 priv->ftp_rqfpr[l] = FPR_FILER_MASK;
745 gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
746 priv->ftp_rqfpr[l]);
747 break;
748 }
749
750 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
751 (priv->ftp_rqfcr[l] & RQFCR_AND))
752 continue;
753 else {
754 local_rqfpr[j] = priv->ftp_rqfpr[l];
755 local_rqfcr[j] = priv->ftp_rqfcr[l];
756 j--;
757 }
758 }
759
760 priv->cur_filer_idx = l - 1;
761
762 /* hash rules */
763 ethflow_to_filer_rules(priv, ethflow);
764
765 /* Write back the popped out rules again */
766 for (k = j+1; k < MAX_FILER_IDX; k++) {
767 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
768 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
769 gfar_write_filer(priv, priv->cur_filer_idx,
770 local_rqfcr[k], local_rqfpr[k]);
771 if (!priv->cur_filer_idx)
772 break;
773 priv->cur_filer_idx = priv->cur_filer_idx - 1;
774 }
775
776err:
777 kfree(local_rqfcr);
778 kfree(local_rqfpr);
779 return ret;
780}
781
782static int gfar_set_hash_opts(struct gfar_private *priv,
783 struct ethtool_rxnfc *cmd)
784{
785 /* write the filer rules here */
786 if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
787 return -EINVAL;
788
789 return 0;
790}
791
792static int gfar_check_filer_hardware(struct gfar_private *priv)
793{
794 struct gfar __iomem *regs = priv->gfargrp[0].regs;
795 u32 i;
796
797 /* Check if we are in FIFO mode */
798 i = gfar_read(®s->ecntrl);
799 i &= ECNTRL_FIFM;
800 if (i == ECNTRL_FIFM) {
801 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
802 i = gfar_read(®s->rctrl);
803 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
804 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
805 netdev_info(priv->ndev,
806 "Receive Queue Filtering enabled\n");
807 } else {
808 netdev_warn(priv->ndev,
809 "Receive Queue Filtering disabled\n");
810 return -EOPNOTSUPP;
811 }
812 }
813 /* Or in standard mode */
814 else {
815 i = gfar_read(®s->rctrl);
816 i &= RCTRL_PRSDEP_MASK;
817 if (i == RCTRL_PRSDEP_MASK) {
818 netdev_info(priv->ndev,
819 "Receive Queue Filtering enabled\n");
820 } else {
821 netdev_warn(priv->ndev,
822 "Receive Queue Filtering disabled\n");
823 return -EOPNOTSUPP;
824 }
825 }
826
827 /* Sets the properties for arbitrary filer rule
828 * to the first 4 Layer 4 Bytes
829 */
830 gfar_write(®s->rbifx, 0xC0C1C2C3);
831 return 0;
832}
833
834/* Write a mask to filer cache */
835static void gfar_set_mask(u32 mask, struct filer_table *tab)
836{
837 tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
838 tab->fe[tab->index].prop = mask;
839 tab->index++;
840}
841
842/* Sets parse bits (e.g. IP or TCP) */
843static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
844{
845 gfar_set_mask(mask, tab);
846 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
847 RQFCR_AND;
848 tab->fe[tab->index].prop = value;
849 tab->index++;
850}
851
852static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
853 struct filer_table *tab)
854{
855 gfar_set_mask(mask, tab);
856 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
857 tab->fe[tab->index].prop = value;
858 tab->index++;
859}
860
861/* For setting a tuple of value and mask of type flag
862 * Example:
863 * IP-Src = 10.0.0.0/255.0.0.0
864 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
865 *
866 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
867 * For a don't care mask it gives us a 0
868 *
869 * The check if don't care and the mask adjustment if mask=0 is done for VLAN
870 * and MAC stuff on an upper level (due to missing information on this level).
871 * For these guys we can discard them if they are value=0 and mask=0.
872 *
873 * Further the all masks are one-padded for better hardware efficiency.
874 */
875static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
876 struct filer_table *tab)
877{
878 switch (flag) {
879 /* 3bit */
880 case RQFCR_PID_PRI:
881 if (!(value | mask))
882 return;
883 mask |= RQFCR_PID_PRI_MASK;
884 break;
885 /* 8bit */
886 case RQFCR_PID_L4P:
887 case RQFCR_PID_TOS:
888 if (!~(mask | RQFCR_PID_L4P_MASK))
889 return;
890 if (!mask)
891 mask = ~0;
892 else
893 mask |= RQFCR_PID_L4P_MASK;
894 break;
895 /* 12bit */
896 case RQFCR_PID_VID:
897 if (!(value | mask))
898 return;
899 mask |= RQFCR_PID_VID_MASK;
900 break;
901 /* 16bit */
902 case RQFCR_PID_DPT:
903 case RQFCR_PID_SPT:
904 case RQFCR_PID_ETY:
905 if (!~(mask | RQFCR_PID_PORT_MASK))
906 return;
907 if (!mask)
908 mask = ~0;
909 else
910 mask |= RQFCR_PID_PORT_MASK;
911 break;
912 /* 24bit */
913 case RQFCR_PID_DAH:
914 case RQFCR_PID_DAL:
915 case RQFCR_PID_SAH:
916 case RQFCR_PID_SAL:
917 if (!(value | mask))
918 return;
919 mask |= RQFCR_PID_MAC_MASK;
920 break;
921 /* for all real 32bit masks */
922 default:
923 if (!~mask)
924 return;
925 if (!mask)
926 mask = ~0;
927 break;
928 }
929 gfar_set_general_attribute(value, mask, flag, tab);
930}
931
932/* Translates value and mask for UDP, TCP or SCTP */
933static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
934 struct ethtool_tcpip4_spec *mask,
935 struct filer_table *tab)
936{
937 gfar_set_attribute(be32_to_cpu(value->ip4src),
938 be32_to_cpu(mask->ip4src),
939 RQFCR_PID_SIA, tab);
940 gfar_set_attribute(be32_to_cpu(value->ip4dst),
941 be32_to_cpu(mask->ip4dst),
942 RQFCR_PID_DIA, tab);
943 gfar_set_attribute(be16_to_cpu(value->pdst),
944 be16_to_cpu(mask->pdst),
945 RQFCR_PID_DPT, tab);
946 gfar_set_attribute(be16_to_cpu(value->psrc),
947 be16_to_cpu(mask->psrc),
948 RQFCR_PID_SPT, tab);
949 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
950}
951
952/* Translates value and mask for RAW-IP4 */
953static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
954 struct ethtool_usrip4_spec *mask,
955 struct filer_table *tab)
956{
957 gfar_set_attribute(be32_to_cpu(value->ip4src),
958 be32_to_cpu(mask->ip4src),
959 RQFCR_PID_SIA, tab);
960 gfar_set_attribute(be32_to_cpu(value->ip4dst),
961 be32_to_cpu(mask->ip4dst),
962 RQFCR_PID_DIA, tab);
963 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
964 gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
965 gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
966 be32_to_cpu(mask->l4_4_bytes),
967 RQFCR_PID_ARB, tab);
968
969}
970
971/* Translates value and mask for ETHER spec */
972static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
973 struct filer_table *tab)
974{
975 u32 upper_temp_mask = 0;
976 u32 lower_temp_mask = 0;
977
978 /* Source address */
979 if (!is_broadcast_ether_addr(mask->h_source)) {
980 if (is_zero_ether_addr(mask->h_source)) {
981 upper_temp_mask = 0xFFFFFFFF;
982 lower_temp_mask = 0xFFFFFFFF;
983 } else {
984 upper_temp_mask = mask->h_source[0] << 16 |
985 mask->h_source[1] << 8 |
986 mask->h_source[2];
987 lower_temp_mask = mask->h_source[3] << 16 |
988 mask->h_source[4] << 8 |
989 mask->h_source[5];
990 }
991 /* Upper 24bit */
992 gfar_set_attribute(value->h_source[0] << 16 |
993 value->h_source[1] << 8 |
994 value->h_source[2],
995 upper_temp_mask, RQFCR_PID_SAH, tab);
996 /* And the same for the lower part */
997 gfar_set_attribute(value->h_source[3] << 16 |
998 value->h_source[4] << 8 |
999 value->h_source[5],
1000 lower_temp_mask, RQFCR_PID_SAL, tab);
1001 }
1002 /* Destination address */
1003 if (!is_broadcast_ether_addr(mask->h_dest)) {
1004 /* Special for destination is limited broadcast */
1005 if ((is_broadcast_ether_addr(value->h_dest) &&
1006 is_zero_ether_addr(mask->h_dest))) {
1007 gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1008 } else {
1009 if (is_zero_ether_addr(mask->h_dest)) {
1010 upper_temp_mask = 0xFFFFFFFF;
1011 lower_temp_mask = 0xFFFFFFFF;
1012 } else {
1013 upper_temp_mask = mask->h_dest[0] << 16 |
1014 mask->h_dest[1] << 8 |
1015 mask->h_dest[2];
1016 lower_temp_mask = mask->h_dest[3] << 16 |
1017 mask->h_dest[4] << 8 |
1018 mask->h_dest[5];
1019 }
1020
1021 /* Upper 24bit */
1022 gfar_set_attribute(value->h_dest[0] << 16 |
1023 value->h_dest[1] << 8 |
1024 value->h_dest[2],
1025 upper_temp_mask, RQFCR_PID_DAH, tab);
1026 /* And the same for the lower part */
1027 gfar_set_attribute(value->h_dest[3] << 16 |
1028 value->h_dest[4] << 8 |
1029 value->h_dest[5],
1030 lower_temp_mask, RQFCR_PID_DAL, tab);
1031 }
1032 }
1033
1034 gfar_set_attribute(be16_to_cpu(value->h_proto),
1035 be16_to_cpu(mask->h_proto),
1036 RQFCR_PID_ETY, tab);
1037}
1038
1039static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1040{
1041 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1042}
1043
1044static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1045{
1046 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1047}
1048
1049static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1050{
1051 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1052}
1053
1054static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1055{
1056 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1057}
1058
1059static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1060{
1061 return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1062 VLAN_PRIO_SHIFT;
1063}
1064
1065static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1066{
1067 return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1068 VLAN_PRIO_SHIFT;
1069}
1070
1071/* Convert a rule to binary filter format of gianfar */
1072static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1073 struct filer_table *tab)
1074{
1075 u32 vlan = 0, vlan_mask = 0;
1076 u32 id = 0, id_mask = 0;
1077 u32 cfi = 0, cfi_mask = 0;
1078 u32 prio = 0, prio_mask = 0;
1079 u32 old_index = tab->index;
1080
1081 /* Check if vlan is wanted */
1082 if ((rule->flow_type & FLOW_EXT) &&
1083 (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1084 if (!rule->m_ext.vlan_tci)
1085 rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1086
1087 vlan = RQFPR_VLN;
1088 vlan_mask = RQFPR_VLN;
1089
1090 /* Separate the fields */
1091 id = vlan_tci_vid(rule);
1092 id_mask = vlan_tci_vidm(rule);
1093 cfi = vlan_tci_cfi(rule);
1094 cfi_mask = vlan_tci_cfim(rule);
1095 prio = vlan_tci_prio(rule);
1096 prio_mask = vlan_tci_priom(rule);
1097
1098 if (cfi_mask) {
1099 if (cfi)
1100 vlan |= RQFPR_CFI;
1101 vlan_mask |= RQFPR_CFI;
1102 }
1103 }
1104
1105 switch (rule->flow_type & ~FLOW_EXT) {
1106 case TCP_V4_FLOW:
1107 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1108 RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1109 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1110 &rule->m_u.tcp_ip4_spec, tab);
1111 break;
1112 case UDP_V4_FLOW:
1113 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1114 RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1115 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1116 &rule->m_u.udp_ip4_spec, tab);
1117 break;
1118 case SCTP_V4_FLOW:
1119 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1120 tab);
1121 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1122 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1123 (struct ethtool_tcpip4_spec *)&rule->m_u,
1124 tab);
1125 break;
1126 case IP_USER_FLOW:
1127 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1128 tab);
1129 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1130 (struct ethtool_usrip4_spec *) &rule->m_u,
1131 tab);
1132 break;
1133 case ETHER_FLOW:
1134 if (vlan)
1135 gfar_set_parse_bits(vlan, vlan_mask, tab);
1136 gfar_set_ether((struct ethhdr *) &rule->h_u,
1137 (struct ethhdr *) &rule->m_u, tab);
1138 break;
1139 default:
1140 return -1;
1141 }
1142
1143 /* Set the vlan attributes in the end */
1144 if (vlan) {
1145 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1146 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1147 }
1148
1149 /* If there has been nothing written till now, it must be a default */
1150 if (tab->index == old_index) {
1151 gfar_set_mask(0xFFFFFFFF, tab);
1152 tab->fe[tab->index].ctrl = 0x20;
1153 tab->fe[tab->index].prop = 0x0;
1154 tab->index++;
1155 }
1156
1157 /* Remove last AND */
1158 tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1159
1160 /* Specify which queue to use or to drop */
1161 if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1162 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1163 else
1164 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1165
1166 /* Only big enough entries can be clustered */
1167 if (tab->index > (old_index + 2)) {
1168 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1169 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1170 }
1171
1172 /* In rare cases the cache can be full while there is
1173 * free space in hw
1174 */
1175 if (tab->index > MAX_FILER_CACHE_IDX - 1)
1176 return -EBUSY;
1177
1178 return 0;
1179}
1180
1181/* Write the bit-pattern from software's buffer to hardware registers */
1182static int gfar_write_filer_table(struct gfar_private *priv,
1183 struct filer_table *tab)
1184{
1185 u32 i = 0;
1186 if (tab->index > MAX_FILER_IDX - 1)
1187 return -EBUSY;
1188
1189 /* Fill regular entries */
1190 for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
1191 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1192 /* Fill the rest with fall-troughs */
1193 for (; i < MAX_FILER_IDX; i++)
1194 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1195 /* Last entry must be default accept
1196 * because that's what people expect
1197 */
1198 gfar_write_filer(priv, i, 0x20, 0x0);
1199
1200 return 0;
1201}
1202
1203static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1204 struct gfar_private *priv)
1205{
1206
1207 if (flow->flow_type & FLOW_EXT) {
1208 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1209 netdev_warn(priv->ndev,
1210 "User-specific data not supported!\n");
1211 if (~flow->m_ext.vlan_etype)
1212 netdev_warn(priv->ndev,
1213 "VLAN-etype not supported!\n");
1214 }
1215 if (flow->flow_type == IP_USER_FLOW)
1216 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1217 netdev_warn(priv->ndev,
1218 "IP-Version differing from IPv4 not supported!\n");
1219
1220 return 0;
1221}
1222
1223static int gfar_process_filer_changes(struct gfar_private *priv)
1224{
1225 struct ethtool_flow_spec_container *j;
1226 struct filer_table *tab;
1227 s32 ret = 0;
1228
1229 /* So index is set to zero, too! */
1230 tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1231 if (tab == NULL)
1232 return -ENOMEM;
1233
1234 /* Now convert the existing filer data from flow_spec into
1235 * filer tables binary format
1236 */
1237 list_for_each_entry(j, &priv->rx_list.list, list) {
1238 ret = gfar_convert_to_filer(&j->fs, tab);
1239 if (ret == -EBUSY) {
1240 netdev_err(priv->ndev,
1241 "Rule not added: No free space!\n");
1242 goto end;
1243 }
1244 if (ret == -1) {
1245 netdev_err(priv->ndev,
1246 "Rule not added: Unsupported Flow-type!\n");
1247 goto end;
1248 }
1249 }
1250
1251 /* Write everything to hardware */
1252 ret = gfar_write_filer_table(priv, tab);
1253 if (ret == -EBUSY) {
1254 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1255 goto end;
1256 }
1257
1258end:
1259 kfree(tab);
1260 return ret;
1261}
1262
1263static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1264{
1265 u32 i = 0;
1266
1267 for (i = 0; i < sizeof(flow->m_u); i++)
1268 flow->m_u.hdata[i] ^= 0xFF;
1269
1270 flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1271 flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1272 flow->m_ext.data[0] ^= cpu_to_be32(~0);
1273 flow->m_ext.data[1] ^= cpu_to_be32(~0);
1274}
1275
1276static int gfar_add_cls(struct gfar_private *priv,
1277 struct ethtool_rx_flow_spec *flow)
1278{
1279 struct ethtool_flow_spec_container *temp, *comp;
1280 int ret = 0;
1281
1282 temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1283 if (temp == NULL)
1284 return -ENOMEM;
1285 memcpy(&temp->fs, flow, sizeof(temp->fs));
1286
1287 gfar_invert_masks(&temp->fs);
1288 ret = gfar_check_capability(&temp->fs, priv);
1289 if (ret)
1290 goto clean_mem;
1291 /* Link in the new element at the right @location */
1292 if (list_empty(&priv->rx_list.list)) {
1293 ret = gfar_check_filer_hardware(priv);
1294 if (ret != 0)
1295 goto clean_mem;
1296 list_add(&temp->list, &priv->rx_list.list);
1297 goto process;
1298 } else {
1299 list_for_each_entry(comp, &priv->rx_list.list, list) {
1300 if (comp->fs.location > flow->location) {
1301 list_add_tail(&temp->list, &comp->list);
1302 goto process;
1303 }
1304 if (comp->fs.location == flow->location) {
1305 netdev_err(priv->ndev,
1306 "Rule not added: ID %d not free!\n",
1307 flow->location);
1308 ret = -EBUSY;
1309 goto clean_mem;
1310 }
1311 }
1312 list_add_tail(&temp->list, &priv->rx_list.list);
1313 }
1314
1315process:
1316 priv->rx_list.count++;
1317 ret = gfar_process_filer_changes(priv);
1318 if (ret)
1319 goto clean_list;
1320 return ret;
1321
1322clean_list:
1323 priv->rx_list.count--;
1324 list_del(&temp->list);
1325clean_mem:
1326 kfree(temp);
1327 return ret;
1328}
1329
1330static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1331{
1332 struct ethtool_flow_spec_container *comp;
1333 u32 ret = -EINVAL;
1334
1335 if (list_empty(&priv->rx_list.list))
1336 return ret;
1337
1338 list_for_each_entry(comp, &priv->rx_list.list, list) {
1339 if (comp->fs.location == loc) {
1340 list_del(&comp->list);
1341 kfree(comp);
1342 priv->rx_list.count--;
1343 gfar_process_filer_changes(priv);
1344 ret = 0;
1345 break;
1346 }
1347 }
1348
1349 return ret;
1350}
1351
1352static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1353{
1354 struct ethtool_flow_spec_container *comp;
1355 u32 ret = -EINVAL;
1356
1357 list_for_each_entry(comp, &priv->rx_list.list, list) {
1358 if (comp->fs.location == cmd->fs.location) {
1359 memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1360 gfar_invert_masks(&cmd->fs);
1361 ret = 0;
1362 break;
1363 }
1364 }
1365
1366 return ret;
1367}
1368
1369static int gfar_get_cls_all(struct gfar_private *priv,
1370 struct ethtool_rxnfc *cmd, u32 *rule_locs)
1371{
1372 struct ethtool_flow_spec_container *comp;
1373 u32 i = 0;
1374
1375 list_for_each_entry(comp, &priv->rx_list.list, list) {
1376 if (i == cmd->rule_cnt)
1377 return -EMSGSIZE;
1378 rule_locs[i] = comp->fs.location;
1379 i++;
1380 }
1381
1382 cmd->data = MAX_FILER_IDX;
1383 cmd->rule_cnt = i;
1384
1385 return 0;
1386}
1387
1388static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1389{
1390 struct gfar_private *priv = netdev_priv(dev);
1391 int ret = 0;
1392
1393 if (test_bit(GFAR_RESETTING, &priv->state))
1394 return -EBUSY;
1395
1396 mutex_lock(&priv->rx_queue_access);
1397
1398 switch (cmd->cmd) {
1399 case ETHTOOL_SRXFH:
1400 ret = gfar_set_hash_opts(priv, cmd);
1401 break;
1402 case ETHTOOL_SRXCLSRLINS:
1403 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1404 cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1405 cmd->fs.location >= MAX_FILER_IDX) {
1406 ret = -EINVAL;
1407 break;
1408 }
1409 ret = gfar_add_cls(priv, &cmd->fs);
1410 break;
1411 case ETHTOOL_SRXCLSRLDEL:
1412 ret = gfar_del_cls(priv, cmd->fs.location);
1413 break;
1414 default:
1415 ret = -EINVAL;
1416 }
1417
1418 mutex_unlock(&priv->rx_queue_access);
1419
1420 return ret;
1421}
1422
1423static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1424 u32 *rule_locs)
1425{
1426 struct gfar_private *priv = netdev_priv(dev);
1427 int ret = 0;
1428
1429 switch (cmd->cmd) {
1430 case ETHTOOL_GRXRINGS:
1431 cmd->data = priv->num_rx_queues;
1432 break;
1433 case ETHTOOL_GRXCLSRLCNT:
1434 cmd->rule_cnt = priv->rx_list.count;
1435 break;
1436 case ETHTOOL_GRXCLSRULE:
1437 ret = gfar_get_cls(priv, cmd);
1438 break;
1439 case ETHTOOL_GRXCLSRLALL:
1440 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1441 break;
1442 default:
1443 ret = -EINVAL;
1444 break;
1445 }
1446
1447 return ret;
1448}
1449
1450static int gfar_get_ts_info(struct net_device *dev,
1451 struct ethtool_ts_info *info)
1452{
1453 struct gfar_private *priv = netdev_priv(dev);
1454 struct platform_device *ptp_dev;
1455 struct device_node *ptp_node;
1456 struct ptp_qoriq *ptp = NULL;
1457
1458 info->phc_index = -1;
1459
1460 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1461 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1462 SOF_TIMESTAMPING_TX_SOFTWARE |
1463 SOF_TIMESTAMPING_SOFTWARE;
1464 return 0;
1465 }
1466
1467 ptp_node = of_find_compatible_node(NULL, NULL, "fsl,etsec-ptp");
1468 if (ptp_node) {
1469 ptp_dev = of_find_device_by_node(ptp_node);
1470 of_node_put(ptp_node);
1471 if (ptp_dev)
1472 ptp = platform_get_drvdata(ptp_dev);
1473 }
1474
1475 if (ptp)
1476 info->phc_index = ptp->phc_index;
1477
1478 info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1479 SOF_TIMESTAMPING_RX_HARDWARE |
1480 SOF_TIMESTAMPING_RAW_HARDWARE |
1481 SOF_TIMESTAMPING_RX_SOFTWARE |
1482 SOF_TIMESTAMPING_TX_SOFTWARE |
1483 SOF_TIMESTAMPING_SOFTWARE;
1484 info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1485 (1 << HWTSTAMP_TX_ON);
1486 info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1487 (1 << HWTSTAMP_FILTER_ALL);
1488 return 0;
1489}
1490
1491const struct ethtool_ops gfar_ethtool_ops = {
1492 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1493 ETHTOOL_COALESCE_MAX_FRAMES,
1494 .get_drvinfo = gfar_gdrvinfo,
1495 .get_regs_len = gfar_reglen,
1496 .get_regs = gfar_get_regs,
1497 .get_link = ethtool_op_get_link,
1498 .get_coalesce = gfar_gcoalesce,
1499 .set_coalesce = gfar_scoalesce,
1500 .get_ringparam = gfar_gringparam,
1501 .set_ringparam = gfar_sringparam,
1502 .get_pauseparam = gfar_gpauseparam,
1503 .set_pauseparam = gfar_spauseparam,
1504 .get_strings = gfar_gstrings,
1505 .get_sset_count = gfar_sset_count,
1506 .get_ethtool_stats = gfar_fill_stats,
1507 .get_msglevel = gfar_get_msglevel,
1508 .set_msglevel = gfar_set_msglevel,
1509#ifdef CONFIG_PM
1510 .get_wol = gfar_get_wol,
1511 .set_wol = gfar_set_wol,
1512#endif
1513 .set_rxnfc = gfar_set_nfc,
1514 .get_rxnfc = gfar_get_nfc,
1515 .get_ts_info = gfar_get_ts_info,
1516 .get_link_ksettings = phy_ethtool_get_link_ksettings,
1517 .set_link_ksettings = phy_ethtool_set_link_ksettings,
1518};
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};