1 /*
2 * drivers/net/ethernet/freescale/gianfar_ethtool.c
3 *
4 * Gianfar Ethernet Driver
5 * Ethtool support for Gianfar Enet
6 * Based on e1000 ethtool support
7 *
8 * Author: Andy Fleming
9 * Maintainer: Kumar Gala
10 * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
11 *
12 * Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc.
13 *
14 * This software may be used and distributed according to
15 * the terms of the GNU Public License, Version 2, incorporated herein
16 * by reference.
17 */
18
19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
20
21 #include <linux/kernel.h>
22 #include <linux/string.h>
23 #include <linux/errno.h>
24 #include <linux/interrupt.h>
25 #include <linux/delay.h>
26 #include <linux/netdevice.h>
27 #include <linux/etherdevice.h>
28 #include <linux/net_tstamp.h>
29 #include <linux/skbuff.h>
30 #include <linux/spinlock.h>
31 #include <linux/mm.h>
32
33 #include <asm/io.h>
34 #include <asm/irq.h>
35 #include <linux/uaccess.h>
36 #include <linux/module.h>
37 #include <linux/crc32.h>
38 #include <asm/types.h>
39 #include <linux/ethtool.h>
40 #include <linux/mii.h>
41 #include <linux/phy.h>
42 #include <linux/sort.h>
43 #include <linux/if_vlan.h>
44 #include <linux/of_platform.h>
45 #include <linux/fsl/ptp_qoriq.h>
46
47 #include "gianfar.h"
48
49 #define GFAR_MAX_COAL_USECS 0xffff
50 #define GFAR_MAX_COAL_FRAMES 0xff
51 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
52 u64 *buf);
53 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
54 static int gfar_gcoalesce(struct net_device *dev,
55 struct ethtool_coalesce *cvals);
56 static int gfar_scoalesce(struct net_device *dev,
57 struct ethtool_coalesce *cvals);
58 static void gfar_gringparam(struct net_device *dev,
59 struct ethtool_ringparam *rvals);
60 static int gfar_sringparam(struct net_device *dev,
61 struct ethtool_ringparam *rvals);
62 static void gfar_gdrvinfo(struct net_device *dev,
63 struct ethtool_drvinfo *drvinfo);
64
65 static const char stat_gstrings[][ETH_GSTRING_LEN] = {
66 /* extra stats */
67 "rx-allocation-errors",
68 "rx-large-frame-errors",
69 "rx-short-frame-errors",
70 "rx-non-octet-errors",
71 "rx-crc-errors",
72 "rx-overrun-errors",
73 "rx-busy-errors",
74 "rx-babbling-errors",
75 "rx-truncated-frames",
76 "ethernet-bus-error",
77 "tx-babbling-errors",
78 "tx-underrun-errors",
79 "tx-timeout-errors",
80 /* rmon stats */
81 "tx-rx-64-frames",
82 "tx-rx-65-127-frames",
83 "tx-rx-128-255-frames",
84 "tx-rx-256-511-frames",
85 "tx-rx-512-1023-frames",
86 "tx-rx-1024-1518-frames",
87 "tx-rx-1519-1522-good-vlan",
88 "rx-bytes",
89 "rx-packets",
90 "rx-fcs-errors",
91 "receive-multicast-packet",
92 "receive-broadcast-packet",
93 "rx-control-frame-packets",
94 "rx-pause-frame-packets",
95 "rx-unknown-op-code",
96 "rx-alignment-error",
97 "rx-frame-length-error",
98 "rx-code-error",
99 "rx-carrier-sense-error",
100 "rx-undersize-packets",
101 "rx-oversize-packets",
102 "rx-fragmented-frames",
103 "rx-jabber-frames",
104 "rx-dropped-frames",
105 "tx-byte-counter",
106 "tx-packets",
107 "tx-multicast-packets",
108 "tx-broadcast-packets",
109 "tx-pause-control-frames",
110 "tx-deferral-packets",
111 "tx-excessive-deferral-packets",
112 "tx-single-collision-packets",
113 "tx-multiple-collision-packets",
114 "tx-late-collision-packets",
115 "tx-excessive-collision-packets",
116 "tx-total-collision",
117 "reserved",
118 "tx-dropped-frames",
119 "tx-jabber-frames",
120 "tx-fcs-errors",
121 "tx-control-frames",
122 "tx-oversize-frames",
123 "tx-undersize-frames",
124 "tx-fragmented-frames",
125 };
126
127 /* Fill in a buffer with the strings which correspond to the
128 * stats */
gfar_gstrings(struct net_device * dev,u32 stringset,u8 * buf)129 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
130 {
131 struct gfar_private *priv = netdev_priv(dev);
132
133 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
134 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
135 else
136 memcpy(buf, stat_gstrings,
137 GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
138 }
139
140 /* Fill in an array of 64-bit statistics from various sources.
141 * This array will be appended to the end of the ethtool_stats
142 * structure, and returned to user space
143 */
gfar_fill_stats(struct net_device * dev,struct ethtool_stats * dummy,u64 * buf)144 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
145 u64 *buf)
146 {
147 int i;
148 struct gfar_private *priv = netdev_priv(dev);
149 struct gfar __iomem *regs = priv->gfargrp[0].regs;
150 atomic64_t *extra = (atomic64_t *)&priv->extra_stats;
151
152 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
153 buf[i] = atomic64_read(&extra[i]);
154
155 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
156 u32 __iomem *rmon = (u32 __iomem *) ®s->rmon;
157
158 for (; i < GFAR_STATS_LEN; i++, rmon++)
159 buf[i] = (u64) gfar_read(rmon);
160 }
161 }
162
gfar_sset_count(struct net_device * dev,int sset)163 static int gfar_sset_count(struct net_device *dev, int sset)
164 {
165 struct gfar_private *priv = netdev_priv(dev);
166
167 switch (sset) {
168 case ETH_SS_STATS:
169 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
170 return GFAR_STATS_LEN;
171 else
172 return GFAR_EXTRA_STATS_LEN;
173 default:
174 return -EOPNOTSUPP;
175 }
176 }
177
178 /* Fills in the drvinfo structure with some basic info */
gfar_gdrvinfo(struct net_device * dev,struct ethtool_drvinfo * drvinfo)179 static void gfar_gdrvinfo(struct net_device *dev,
180 struct ethtool_drvinfo *drvinfo)
181 {
182 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
183 strlcpy(drvinfo->version, gfar_driver_version,
184 sizeof(drvinfo->version));
185 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
186 strlcpy(drvinfo->bus_info, "N/A", sizeof(drvinfo->bus_info));
187 }
188
189 /* Return the length of the register structure */
gfar_reglen(struct net_device * dev)190 static int gfar_reglen(struct net_device *dev)
191 {
192 return sizeof (struct gfar);
193 }
194
195 /* Return a dump of the GFAR register space */
gfar_get_regs(struct net_device * dev,struct ethtool_regs * regs,void * regbuf)196 static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
197 void *regbuf)
198 {
199 int i;
200 struct gfar_private *priv = netdev_priv(dev);
201 u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
202 u32 *buf = (u32 *) regbuf;
203
204 for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
205 buf[i] = gfar_read(&theregs[i]);
206 }
207
208 /* Convert microseconds to ethernet clock ticks, which changes
209 * depending on what speed the controller is running at */
gfar_usecs2ticks(struct gfar_private * priv,unsigned int usecs)210 static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
211 unsigned int usecs)
212 {
213 struct net_device *ndev = priv->ndev;
214 struct phy_device *phydev = ndev->phydev;
215 unsigned int count;
216
217 /* The timer is different, depending on the interface speed */
218 switch (phydev->speed) {
219 case SPEED_1000:
220 count = GFAR_GBIT_TIME;
221 break;
222 case SPEED_100:
223 count = GFAR_100_TIME;
224 break;
225 case SPEED_10:
226 default:
227 count = GFAR_10_TIME;
228 break;
229 }
230
231 /* Make sure we return a number greater than 0
232 * if usecs > 0 */
233 return (usecs * 1000 + count - 1) / count;
234 }
235
236 /* Convert ethernet clock ticks to microseconds */
gfar_ticks2usecs(struct gfar_private * priv,unsigned int ticks)237 static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
238 unsigned int ticks)
239 {
240 struct net_device *ndev = priv->ndev;
241 struct phy_device *phydev = ndev->phydev;
242 unsigned int count;
243
244 /* The timer is different, depending on the interface speed */
245 switch (phydev->speed) {
246 case SPEED_1000:
247 count = GFAR_GBIT_TIME;
248 break;
249 case SPEED_100:
250 count = GFAR_100_TIME;
251 break;
252 case SPEED_10:
253 default:
254 count = GFAR_10_TIME;
255 break;
256 }
257
258 /* Make sure we return a number greater than 0 */
259 /* if ticks is > 0 */
260 return (ticks * count) / 1000;
261 }
262
263 /* Get the coalescing parameters, and put them in the cvals
264 * structure. */
gfar_gcoalesce(struct net_device * dev,struct ethtool_coalesce * cvals)265 static int gfar_gcoalesce(struct net_device *dev,
266 struct ethtool_coalesce *cvals)
267 {
268 struct gfar_private *priv = netdev_priv(dev);
269 struct gfar_priv_rx_q *rx_queue = NULL;
270 struct gfar_priv_tx_q *tx_queue = NULL;
271 unsigned long rxtime;
272 unsigned long rxcount;
273 unsigned long txtime;
274 unsigned long txcount;
275
276 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
277 return -EOPNOTSUPP;
278
279 if (!dev->phydev)
280 return -ENODEV;
281
282 rx_queue = priv->rx_queue[0];
283 tx_queue = priv->tx_queue[0];
284
285 rxtime = get_ictt_value(rx_queue->rxic);
286 rxcount = get_icft_value(rx_queue->rxic);
287 txtime = get_ictt_value(tx_queue->txic);
288 txcount = get_icft_value(tx_queue->txic);
289 cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
290 cvals->rx_max_coalesced_frames = rxcount;
291
292 cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
293 cvals->tx_max_coalesced_frames = txcount;
294
295 cvals->use_adaptive_rx_coalesce = 0;
296 cvals->use_adaptive_tx_coalesce = 0;
297
298 cvals->pkt_rate_low = 0;
299 cvals->rx_coalesce_usecs_low = 0;
300 cvals->rx_max_coalesced_frames_low = 0;
301 cvals->tx_coalesce_usecs_low = 0;
302 cvals->tx_max_coalesced_frames_low = 0;
303
304 /* When the packet rate is below pkt_rate_high but above
305 * pkt_rate_low (both measured in packets per second) the
306 * normal {rx,tx}_* coalescing parameters are used.
307 */
308
309 /* When the packet rate is (measured in packets per second)
310 * is above pkt_rate_high, the {rx,tx}_*_high parameters are
311 * used.
312 */
313 cvals->pkt_rate_high = 0;
314 cvals->rx_coalesce_usecs_high = 0;
315 cvals->rx_max_coalesced_frames_high = 0;
316 cvals->tx_coalesce_usecs_high = 0;
317 cvals->tx_max_coalesced_frames_high = 0;
318
319 /* How often to do adaptive coalescing packet rate sampling,
320 * measured in seconds. Must not be zero.
321 */
322 cvals->rate_sample_interval = 0;
323
324 return 0;
325 }
326
327 /* Change the coalescing values.
328 * Both cvals->*_usecs and cvals->*_frames have to be > 0
329 * in order for coalescing to be active
330 */
gfar_scoalesce(struct net_device * dev,struct ethtool_coalesce * cvals)331 static int gfar_scoalesce(struct net_device *dev,
332 struct ethtool_coalesce *cvals)
333 {
334 struct gfar_private *priv = netdev_priv(dev);
335 int i, err = 0;
336
337 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
338 return -EOPNOTSUPP;
339
340 if (!dev->phydev)
341 return -ENODEV;
342
343 /* Check the bounds of the values */
344 if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
345 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
346 GFAR_MAX_COAL_USECS);
347 return -EINVAL;
348 }
349
350 if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
351 netdev_info(dev, "Coalescing is limited to %d frames\n",
352 GFAR_MAX_COAL_FRAMES);
353 return -EINVAL;
354 }
355
356 /* Check the bounds of the values */
357 if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
358 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
359 GFAR_MAX_COAL_USECS);
360 return -EINVAL;
361 }
362
363 if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
364 netdev_info(dev, "Coalescing is limited to %d frames\n",
365 GFAR_MAX_COAL_FRAMES);
366 return -EINVAL;
367 }
368
369 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
370 cpu_relax();
371
372 /* Set up rx coalescing */
373 if ((cvals->rx_coalesce_usecs == 0) ||
374 (cvals->rx_max_coalesced_frames == 0)) {
375 for (i = 0; i < priv->num_rx_queues; i++)
376 priv->rx_queue[i]->rxcoalescing = 0;
377 } else {
378 for (i = 0; i < priv->num_rx_queues; i++)
379 priv->rx_queue[i]->rxcoalescing = 1;
380 }
381
382 for (i = 0; i < priv->num_rx_queues; i++) {
383 priv->rx_queue[i]->rxic = mk_ic_value(
384 cvals->rx_max_coalesced_frames,
385 gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
386 }
387
388 /* Set up tx coalescing */
389 if ((cvals->tx_coalesce_usecs == 0) ||
390 (cvals->tx_max_coalesced_frames == 0)) {
391 for (i = 0; i < priv->num_tx_queues; i++)
392 priv->tx_queue[i]->txcoalescing = 0;
393 } else {
394 for (i = 0; i < priv->num_tx_queues; i++)
395 priv->tx_queue[i]->txcoalescing = 1;
396 }
397
398 for (i = 0; i < priv->num_tx_queues; i++) {
399 priv->tx_queue[i]->txic = mk_ic_value(
400 cvals->tx_max_coalesced_frames,
401 gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
402 }
403
404 if (dev->flags & IFF_UP) {
405 stop_gfar(dev);
406 err = startup_gfar(dev);
407 } else {
408 gfar_mac_reset(priv);
409 }
410
411 clear_bit_unlock(GFAR_RESETTING, &priv->state);
412
413 return err;
414 }
415
416 /* Fills in rvals with the current ring parameters. Currently,
417 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
418 * jumbo are ignored by the driver */
gfar_gringparam(struct net_device * dev,struct ethtool_ringparam * rvals)419 static void gfar_gringparam(struct net_device *dev,
420 struct ethtool_ringparam *rvals)
421 {
422 struct gfar_private *priv = netdev_priv(dev);
423 struct gfar_priv_tx_q *tx_queue = NULL;
424 struct gfar_priv_rx_q *rx_queue = NULL;
425
426 tx_queue = priv->tx_queue[0];
427 rx_queue = priv->rx_queue[0];
428
429 rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
430 rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
431 rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
432 rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
433
434 /* Values changeable by the user. The valid values are
435 * in the range 1 to the "*_max_pending" counterpart above.
436 */
437 rvals->rx_pending = rx_queue->rx_ring_size;
438 rvals->rx_mini_pending = rx_queue->rx_ring_size;
439 rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
440 rvals->tx_pending = tx_queue->tx_ring_size;
441 }
442
443 /* Change the current ring parameters, stopping the controller if
444 * necessary so that we don't mess things up while we're in motion.
445 */
gfar_sringparam(struct net_device * dev,struct ethtool_ringparam * rvals)446 static int gfar_sringparam(struct net_device *dev,
447 struct ethtool_ringparam *rvals)
448 {
449 struct gfar_private *priv = netdev_priv(dev);
450 int err = 0, i;
451
452 if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
453 return -EINVAL;
454
455 if (!is_power_of_2(rvals->rx_pending)) {
456 netdev_err(dev, "Ring sizes must be a power of 2\n");
457 return -EINVAL;
458 }
459
460 if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
461 return -EINVAL;
462
463 if (!is_power_of_2(rvals->tx_pending)) {
464 netdev_err(dev, "Ring sizes must be a power of 2\n");
465 return -EINVAL;
466 }
467
468 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
469 cpu_relax();
470
471 if (dev->flags & IFF_UP)
472 stop_gfar(dev);
473
474 /* Change the sizes */
475 for (i = 0; i < priv->num_rx_queues; i++)
476 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
477
478 for (i = 0; i < priv->num_tx_queues; i++)
479 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
480
481 /* Rebuild the rings with the new size */
482 if (dev->flags & IFF_UP)
483 err = startup_gfar(dev);
484
485 clear_bit_unlock(GFAR_RESETTING, &priv->state);
486
487 return err;
488 }
489
gfar_gpauseparam(struct net_device * dev,struct ethtool_pauseparam * epause)490 static void gfar_gpauseparam(struct net_device *dev,
491 struct ethtool_pauseparam *epause)
492 {
493 struct gfar_private *priv = netdev_priv(dev);
494
495 epause->autoneg = !!priv->pause_aneg_en;
496 epause->rx_pause = !!priv->rx_pause_en;
497 epause->tx_pause = !!priv->tx_pause_en;
498 }
499
gfar_spauseparam(struct net_device * dev,struct ethtool_pauseparam * epause)500 static int gfar_spauseparam(struct net_device *dev,
501 struct ethtool_pauseparam *epause)
502 {
503 struct gfar_private *priv = netdev_priv(dev);
504 struct phy_device *phydev = dev->phydev;
505 struct gfar __iomem *regs = priv->gfargrp[0].regs;
506 u32 oldadv, newadv;
507
508 if (!phydev)
509 return -ENODEV;
510
511 if (!(phydev->supported & SUPPORTED_Pause) ||
512 (!(phydev->supported & SUPPORTED_Asym_Pause) &&
513 (epause->rx_pause != epause->tx_pause)))
514 return -EINVAL;
515
516 priv->rx_pause_en = priv->tx_pause_en = 0;
517 if (epause->rx_pause) {
518 priv->rx_pause_en = 1;
519
520 if (epause->tx_pause) {
521 priv->tx_pause_en = 1;
522 /* FLOW_CTRL_RX & TX */
523 newadv = ADVERTISED_Pause;
524 } else /* FLOW_CTLR_RX */
525 newadv = ADVERTISED_Pause | ADVERTISED_Asym_Pause;
526 } else if (epause->tx_pause) {
527 priv->tx_pause_en = 1;
528 /* FLOW_CTLR_TX */
529 newadv = ADVERTISED_Asym_Pause;
530 } else
531 newadv = 0;
532
533 if (epause->autoneg)
534 priv->pause_aneg_en = 1;
535 else
536 priv->pause_aneg_en = 0;
537
538 oldadv = phydev->advertising &
539 (ADVERTISED_Pause | ADVERTISED_Asym_Pause);
540 if (oldadv != newadv) {
541 phydev->advertising &=
542 ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
543 phydev->advertising |= newadv;
544 if (phydev->autoneg)
545 /* inform link partner of our
546 * new flow ctrl settings
547 */
548 return phy_start_aneg(phydev);
549
550 if (!epause->autoneg) {
551 u32 tempval;
552 tempval = gfar_read(®s->maccfg1);
553 tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
554
555 priv->tx_actual_en = 0;
556 if (priv->tx_pause_en) {
557 priv->tx_actual_en = 1;
558 tempval |= MACCFG1_TX_FLOW;
559 }
560
561 if (priv->rx_pause_en)
562 tempval |= MACCFG1_RX_FLOW;
563 gfar_write(®s->maccfg1, tempval);
564 }
565 }
566
567 return 0;
568 }
569
gfar_set_features(struct net_device * dev,netdev_features_t features)570 int gfar_set_features(struct net_device *dev, netdev_features_t features)
571 {
572 netdev_features_t changed = dev->features ^ features;
573 struct gfar_private *priv = netdev_priv(dev);
574 int err = 0;
575
576 if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
577 NETIF_F_RXCSUM)))
578 return 0;
579
580 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
581 cpu_relax();
582
583 dev->features = features;
584
585 if (dev->flags & IFF_UP) {
586 /* Now we take down the rings to rebuild them */
587 stop_gfar(dev);
588 err = startup_gfar(dev);
589 } else {
590 gfar_mac_reset(priv);
591 }
592
593 clear_bit_unlock(GFAR_RESETTING, &priv->state);
594
595 return err;
596 }
597
gfar_get_msglevel(struct net_device * dev)598 static uint32_t gfar_get_msglevel(struct net_device *dev)
599 {
600 struct gfar_private *priv = netdev_priv(dev);
601
602 return priv->msg_enable;
603 }
604
gfar_set_msglevel(struct net_device * dev,uint32_t data)605 static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
606 {
607 struct gfar_private *priv = netdev_priv(dev);
608
609 priv->msg_enable = data;
610 }
611
612 #ifdef CONFIG_PM
gfar_get_wol(struct net_device * dev,struct ethtool_wolinfo * wol)613 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
614 {
615 struct gfar_private *priv = netdev_priv(dev);
616
617 wol->supported = 0;
618 wol->wolopts = 0;
619
620 if (priv->wol_supported & GFAR_WOL_MAGIC)
621 wol->supported |= WAKE_MAGIC;
622
623 if (priv->wol_supported & GFAR_WOL_FILER_UCAST)
624 wol->supported |= WAKE_UCAST;
625
626 if (priv->wol_opts & GFAR_WOL_MAGIC)
627 wol->wolopts |= WAKE_MAGIC;
628
629 if (priv->wol_opts & GFAR_WOL_FILER_UCAST)
630 wol->wolopts |= WAKE_UCAST;
631 }
632
gfar_set_wol(struct net_device * dev,struct ethtool_wolinfo * wol)633 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
634 {
635 struct gfar_private *priv = netdev_priv(dev);
636 u16 wol_opts = 0;
637 int err;
638
639 if (!priv->wol_supported && wol->wolopts)
640 return -EINVAL;
641
642 if (wol->wolopts & ~(WAKE_MAGIC | WAKE_UCAST))
643 return -EINVAL;
644
645 if (wol->wolopts & WAKE_MAGIC) {
646 wol_opts |= GFAR_WOL_MAGIC;
647 } else {
648 if (wol->wolopts & WAKE_UCAST)
649 wol_opts |= GFAR_WOL_FILER_UCAST;
650 }
651
652 wol_opts &= priv->wol_supported;
653 priv->wol_opts = 0;
654
655 err = device_set_wakeup_enable(priv->dev, wol_opts);
656 if (err)
657 return err;
658
659 priv->wol_opts = wol_opts;
660
661 return 0;
662 }
663 #endif
664
ethflow_to_filer_rules(struct gfar_private * priv,u64 ethflow)665 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
666 {
667 u32 fcr = 0x0, fpr = FPR_FILER_MASK;
668
669 if (ethflow & RXH_L2DA) {
670 fcr = RQFCR_PID_DAH | RQFCR_CMP_NOMATCH |
671 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
672 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
673 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
674 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
675 priv->cur_filer_idx = priv->cur_filer_idx - 1;
676
677 fcr = RQFCR_PID_DAL | RQFCR_CMP_NOMATCH |
678 RQFCR_HASH | 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 if (ethflow & RXH_VLAN) {
686 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
687 RQFCR_AND | RQFCR_HASHTBL_0;
688 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
689 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
690 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
691 priv->cur_filer_idx = priv->cur_filer_idx - 1;
692 }
693
694 if (ethflow & RXH_IP_SRC) {
695 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
696 RQFCR_AND | RQFCR_HASHTBL_0;
697 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
698 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
699 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
700 priv->cur_filer_idx = priv->cur_filer_idx - 1;
701 }
702
703 if (ethflow & (RXH_IP_DST)) {
704 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
705 RQFCR_AND | RQFCR_HASHTBL_0;
706 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
707 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
708 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
709 priv->cur_filer_idx = priv->cur_filer_idx - 1;
710 }
711
712 if (ethflow & RXH_L3_PROTO) {
713 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
714 RQFCR_AND | RQFCR_HASHTBL_0;
715 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
716 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
717 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
718 priv->cur_filer_idx = priv->cur_filer_idx - 1;
719 }
720
721 if (ethflow & RXH_L4_B_0_1) {
722 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
723 RQFCR_AND | RQFCR_HASHTBL_0;
724 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
725 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
726 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
727 priv->cur_filer_idx = priv->cur_filer_idx - 1;
728 }
729
730 if (ethflow & RXH_L4_B_2_3) {
731 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
732 RQFCR_AND | RQFCR_HASHTBL_0;
733 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
734 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
735 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
736 priv->cur_filer_idx = priv->cur_filer_idx - 1;
737 }
738 }
739
gfar_ethflow_to_filer_table(struct gfar_private * priv,u64 ethflow,u64 class)740 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
741 u64 class)
742 {
743 unsigned int cmp_rqfpr;
744 unsigned int *local_rqfpr;
745 unsigned int *local_rqfcr;
746 int i = 0x0, k = 0x0;
747 int j = MAX_FILER_IDX, l = 0x0;
748 int ret = 1;
749
750 local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
751 GFP_KERNEL);
752 local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
753 GFP_KERNEL);
754 if (!local_rqfpr || !local_rqfcr) {
755 ret = 0;
756 goto err;
757 }
758
759 switch (class) {
760 case TCP_V4_FLOW:
761 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
762 break;
763 case UDP_V4_FLOW:
764 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
765 break;
766 case TCP_V6_FLOW:
767 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
768 break;
769 case UDP_V6_FLOW:
770 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
771 break;
772 default:
773 netdev_err(priv->ndev,
774 "Right now this class is not supported\n");
775 ret = 0;
776 goto err;
777 }
778
779 for (i = 0; i < MAX_FILER_IDX + 1; i++) {
780 local_rqfpr[j] = priv->ftp_rqfpr[i];
781 local_rqfcr[j] = priv->ftp_rqfcr[i];
782 j--;
783 if ((priv->ftp_rqfcr[i] ==
784 (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
785 (priv->ftp_rqfpr[i] == cmp_rqfpr))
786 break;
787 }
788
789 if (i == MAX_FILER_IDX + 1) {
790 netdev_err(priv->ndev,
791 "No parse rule found, can't create hash rules\n");
792 ret = 0;
793 goto err;
794 }
795
796 /* If a match was found, then it begins the starting of a cluster rule
797 * if it was already programmed, we need to overwrite these rules
798 */
799 for (l = i+1; l < MAX_FILER_IDX; l++) {
800 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
801 !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
802 priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
803 RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
804 priv->ftp_rqfpr[l] = FPR_FILER_MASK;
805 gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
806 priv->ftp_rqfpr[l]);
807 break;
808 }
809
810 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
811 (priv->ftp_rqfcr[l] & RQFCR_AND))
812 continue;
813 else {
814 local_rqfpr[j] = priv->ftp_rqfpr[l];
815 local_rqfcr[j] = priv->ftp_rqfcr[l];
816 j--;
817 }
818 }
819
820 priv->cur_filer_idx = l - 1;
821
822 /* hash rules */
823 ethflow_to_filer_rules(priv, ethflow);
824
825 /* Write back the popped out rules again */
826 for (k = j+1; k < MAX_FILER_IDX; k++) {
827 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
828 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
829 gfar_write_filer(priv, priv->cur_filer_idx,
830 local_rqfcr[k], local_rqfpr[k]);
831 if (!priv->cur_filer_idx)
832 break;
833 priv->cur_filer_idx = priv->cur_filer_idx - 1;
834 }
835
836 err:
837 kfree(local_rqfcr);
838 kfree(local_rqfpr);
839 return ret;
840 }
841
gfar_set_hash_opts(struct gfar_private * priv,struct ethtool_rxnfc * cmd)842 static int gfar_set_hash_opts(struct gfar_private *priv,
843 struct ethtool_rxnfc *cmd)
844 {
845 /* write the filer rules here */
846 if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
847 return -EINVAL;
848
849 return 0;
850 }
851
gfar_check_filer_hardware(struct gfar_private * priv)852 static int gfar_check_filer_hardware(struct gfar_private *priv)
853 {
854 struct gfar __iomem *regs = priv->gfargrp[0].regs;
855 u32 i;
856
857 /* Check if we are in FIFO mode */
858 i = gfar_read(®s->ecntrl);
859 i &= ECNTRL_FIFM;
860 if (i == ECNTRL_FIFM) {
861 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
862 i = gfar_read(®s->rctrl);
863 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
864 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
865 netdev_info(priv->ndev,
866 "Receive Queue Filtering enabled\n");
867 } else {
868 netdev_warn(priv->ndev,
869 "Receive Queue Filtering disabled\n");
870 return -EOPNOTSUPP;
871 }
872 }
873 /* Or in standard mode */
874 else {
875 i = gfar_read(®s->rctrl);
876 i &= RCTRL_PRSDEP_MASK;
877 if (i == RCTRL_PRSDEP_MASK) {
878 netdev_info(priv->ndev,
879 "Receive Queue Filtering enabled\n");
880 } else {
881 netdev_warn(priv->ndev,
882 "Receive Queue Filtering disabled\n");
883 return -EOPNOTSUPP;
884 }
885 }
886
887 /* Sets the properties for arbitrary filer rule
888 * to the first 4 Layer 4 Bytes
889 */
890 gfar_write(®s->rbifx, 0xC0C1C2C3);
891 return 0;
892 }
893
894 /* Write a mask to filer cache */
gfar_set_mask(u32 mask,struct filer_table * tab)895 static void gfar_set_mask(u32 mask, struct filer_table *tab)
896 {
897 tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
898 tab->fe[tab->index].prop = mask;
899 tab->index++;
900 }
901
902 /* Sets parse bits (e.g. IP or TCP) */
gfar_set_parse_bits(u32 value,u32 mask,struct filer_table * tab)903 static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
904 {
905 gfar_set_mask(mask, tab);
906 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
907 RQFCR_AND;
908 tab->fe[tab->index].prop = value;
909 tab->index++;
910 }
911
gfar_set_general_attribute(u32 value,u32 mask,u32 flag,struct filer_table * tab)912 static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
913 struct filer_table *tab)
914 {
915 gfar_set_mask(mask, tab);
916 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
917 tab->fe[tab->index].prop = value;
918 tab->index++;
919 }
920
921 /* For setting a tuple of value and mask of type flag
922 * Example:
923 * IP-Src = 10.0.0.0/255.0.0.0
924 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
925 *
926 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
927 * For a don't care mask it gives us a 0
928 *
929 * The check if don't care and the mask adjustment if mask=0 is done for VLAN
930 * and MAC stuff on an upper level (due to missing information on this level).
931 * For these guys we can discard them if they are value=0 and mask=0.
932 *
933 * Further the all masks are one-padded for better hardware efficiency.
934 */
gfar_set_attribute(u32 value,u32 mask,u32 flag,struct filer_table * tab)935 static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
936 struct filer_table *tab)
937 {
938 switch (flag) {
939 /* 3bit */
940 case RQFCR_PID_PRI:
941 if (!(value | mask))
942 return;
943 mask |= RQFCR_PID_PRI_MASK;
944 break;
945 /* 8bit */
946 case RQFCR_PID_L4P:
947 case RQFCR_PID_TOS:
948 if (!~(mask | RQFCR_PID_L4P_MASK))
949 return;
950 if (!mask)
951 mask = ~0;
952 else
953 mask |= RQFCR_PID_L4P_MASK;
954 break;
955 /* 12bit */
956 case RQFCR_PID_VID:
957 if (!(value | mask))
958 return;
959 mask |= RQFCR_PID_VID_MASK;
960 break;
961 /* 16bit */
962 case RQFCR_PID_DPT:
963 case RQFCR_PID_SPT:
964 case RQFCR_PID_ETY:
965 if (!~(mask | RQFCR_PID_PORT_MASK))
966 return;
967 if (!mask)
968 mask = ~0;
969 else
970 mask |= RQFCR_PID_PORT_MASK;
971 break;
972 /* 24bit */
973 case RQFCR_PID_DAH:
974 case RQFCR_PID_DAL:
975 case RQFCR_PID_SAH:
976 case RQFCR_PID_SAL:
977 if (!(value | mask))
978 return;
979 mask |= RQFCR_PID_MAC_MASK;
980 break;
981 /* for all real 32bit masks */
982 default:
983 if (!~mask)
984 return;
985 if (!mask)
986 mask = ~0;
987 break;
988 }
989 gfar_set_general_attribute(value, mask, flag, tab);
990 }
991
992 /* Translates value and mask for UDP, TCP or SCTP */
gfar_set_basic_ip(struct ethtool_tcpip4_spec * value,struct ethtool_tcpip4_spec * mask,struct filer_table * tab)993 static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
994 struct ethtool_tcpip4_spec *mask,
995 struct filer_table *tab)
996 {
997 gfar_set_attribute(be32_to_cpu(value->ip4src),
998 be32_to_cpu(mask->ip4src),
999 RQFCR_PID_SIA, tab);
1000 gfar_set_attribute(be32_to_cpu(value->ip4dst),
1001 be32_to_cpu(mask->ip4dst),
1002 RQFCR_PID_DIA, tab);
1003 gfar_set_attribute(be16_to_cpu(value->pdst),
1004 be16_to_cpu(mask->pdst),
1005 RQFCR_PID_DPT, tab);
1006 gfar_set_attribute(be16_to_cpu(value->psrc),
1007 be16_to_cpu(mask->psrc),
1008 RQFCR_PID_SPT, tab);
1009 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1010 }
1011
1012 /* Translates value and mask for RAW-IP4 */
gfar_set_user_ip(struct ethtool_usrip4_spec * value,struct ethtool_usrip4_spec * mask,struct filer_table * tab)1013 static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
1014 struct ethtool_usrip4_spec *mask,
1015 struct filer_table *tab)
1016 {
1017 gfar_set_attribute(be32_to_cpu(value->ip4src),
1018 be32_to_cpu(mask->ip4src),
1019 RQFCR_PID_SIA, tab);
1020 gfar_set_attribute(be32_to_cpu(value->ip4dst),
1021 be32_to_cpu(mask->ip4dst),
1022 RQFCR_PID_DIA, tab);
1023 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1024 gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
1025 gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
1026 be32_to_cpu(mask->l4_4_bytes),
1027 RQFCR_PID_ARB, tab);
1028
1029 }
1030
1031 /* Translates value and mask for ETHER spec */
gfar_set_ether(struct ethhdr * value,struct ethhdr * mask,struct filer_table * tab)1032 static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
1033 struct filer_table *tab)
1034 {
1035 u32 upper_temp_mask = 0;
1036 u32 lower_temp_mask = 0;
1037
1038 /* Source address */
1039 if (!is_broadcast_ether_addr(mask->h_source)) {
1040 if (is_zero_ether_addr(mask->h_source)) {
1041 upper_temp_mask = 0xFFFFFFFF;
1042 lower_temp_mask = 0xFFFFFFFF;
1043 } else {
1044 upper_temp_mask = mask->h_source[0] << 16 |
1045 mask->h_source[1] << 8 |
1046 mask->h_source[2];
1047 lower_temp_mask = mask->h_source[3] << 16 |
1048 mask->h_source[4] << 8 |
1049 mask->h_source[5];
1050 }
1051 /* Upper 24bit */
1052 gfar_set_attribute(value->h_source[0] << 16 |
1053 value->h_source[1] << 8 |
1054 value->h_source[2],
1055 upper_temp_mask, RQFCR_PID_SAH, tab);
1056 /* And the same for the lower part */
1057 gfar_set_attribute(value->h_source[3] << 16 |
1058 value->h_source[4] << 8 |
1059 value->h_source[5],
1060 lower_temp_mask, RQFCR_PID_SAL, tab);
1061 }
1062 /* Destination address */
1063 if (!is_broadcast_ether_addr(mask->h_dest)) {
1064 /* Special for destination is limited broadcast */
1065 if ((is_broadcast_ether_addr(value->h_dest) &&
1066 is_zero_ether_addr(mask->h_dest))) {
1067 gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1068 } else {
1069 if (is_zero_ether_addr(mask->h_dest)) {
1070 upper_temp_mask = 0xFFFFFFFF;
1071 lower_temp_mask = 0xFFFFFFFF;
1072 } else {
1073 upper_temp_mask = mask->h_dest[0] << 16 |
1074 mask->h_dest[1] << 8 |
1075 mask->h_dest[2];
1076 lower_temp_mask = mask->h_dest[3] << 16 |
1077 mask->h_dest[4] << 8 |
1078 mask->h_dest[5];
1079 }
1080
1081 /* Upper 24bit */
1082 gfar_set_attribute(value->h_dest[0] << 16 |
1083 value->h_dest[1] << 8 |
1084 value->h_dest[2],
1085 upper_temp_mask, RQFCR_PID_DAH, tab);
1086 /* And the same for the lower part */
1087 gfar_set_attribute(value->h_dest[3] << 16 |
1088 value->h_dest[4] << 8 |
1089 value->h_dest[5],
1090 lower_temp_mask, RQFCR_PID_DAL, tab);
1091 }
1092 }
1093
1094 gfar_set_attribute(be16_to_cpu(value->h_proto),
1095 be16_to_cpu(mask->h_proto),
1096 RQFCR_PID_ETY, tab);
1097 }
1098
vlan_tci_vid(struct ethtool_rx_flow_spec * rule)1099 static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1100 {
1101 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1102 }
1103
vlan_tci_vidm(struct ethtool_rx_flow_spec * rule)1104 static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1105 {
1106 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1107 }
1108
vlan_tci_cfi(struct ethtool_rx_flow_spec * rule)1109 static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1110 {
1111 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1112 }
1113
vlan_tci_cfim(struct ethtool_rx_flow_spec * rule)1114 static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1115 {
1116 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1117 }
1118
vlan_tci_prio(struct ethtool_rx_flow_spec * rule)1119 static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1120 {
1121 return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1122 VLAN_PRIO_SHIFT;
1123 }
1124
vlan_tci_priom(struct ethtool_rx_flow_spec * rule)1125 static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1126 {
1127 return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1128 VLAN_PRIO_SHIFT;
1129 }
1130
1131 /* Convert a rule to binary filter format of gianfar */
gfar_convert_to_filer(struct ethtool_rx_flow_spec * rule,struct filer_table * tab)1132 static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1133 struct filer_table *tab)
1134 {
1135 u32 vlan = 0, vlan_mask = 0;
1136 u32 id = 0, id_mask = 0;
1137 u32 cfi = 0, cfi_mask = 0;
1138 u32 prio = 0, prio_mask = 0;
1139 u32 old_index = tab->index;
1140
1141 /* Check if vlan is wanted */
1142 if ((rule->flow_type & FLOW_EXT) &&
1143 (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1144 if (!rule->m_ext.vlan_tci)
1145 rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1146
1147 vlan = RQFPR_VLN;
1148 vlan_mask = RQFPR_VLN;
1149
1150 /* Separate the fields */
1151 id = vlan_tci_vid(rule);
1152 id_mask = vlan_tci_vidm(rule);
1153 cfi = vlan_tci_cfi(rule);
1154 cfi_mask = vlan_tci_cfim(rule);
1155 prio = vlan_tci_prio(rule);
1156 prio_mask = vlan_tci_priom(rule);
1157
1158 if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
1159 vlan |= RQFPR_CFI;
1160 vlan_mask |= RQFPR_CFI;
1161 } else if (cfi != VLAN_TAG_PRESENT &&
1162 cfi_mask == VLAN_TAG_PRESENT) {
1163 vlan_mask |= RQFPR_CFI;
1164 }
1165 }
1166
1167 switch (rule->flow_type & ~FLOW_EXT) {
1168 case TCP_V4_FLOW:
1169 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1170 RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1171 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1172 &rule->m_u.tcp_ip4_spec, tab);
1173 break;
1174 case UDP_V4_FLOW:
1175 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1176 RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1177 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1178 &rule->m_u.udp_ip4_spec, tab);
1179 break;
1180 case SCTP_V4_FLOW:
1181 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1182 tab);
1183 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1184 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1185 (struct ethtool_tcpip4_spec *)&rule->m_u,
1186 tab);
1187 break;
1188 case IP_USER_FLOW:
1189 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1190 tab);
1191 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1192 (struct ethtool_usrip4_spec *) &rule->m_u,
1193 tab);
1194 break;
1195 case ETHER_FLOW:
1196 if (vlan)
1197 gfar_set_parse_bits(vlan, vlan_mask, tab);
1198 gfar_set_ether((struct ethhdr *) &rule->h_u,
1199 (struct ethhdr *) &rule->m_u, tab);
1200 break;
1201 default:
1202 return -1;
1203 }
1204
1205 /* Set the vlan attributes in the end */
1206 if (vlan) {
1207 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1208 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1209 }
1210
1211 /* If there has been nothing written till now, it must be a default */
1212 if (tab->index == old_index) {
1213 gfar_set_mask(0xFFFFFFFF, tab);
1214 tab->fe[tab->index].ctrl = 0x20;
1215 tab->fe[tab->index].prop = 0x0;
1216 tab->index++;
1217 }
1218
1219 /* Remove last AND */
1220 tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1221
1222 /* Specify which queue to use or to drop */
1223 if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1224 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1225 else
1226 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1227
1228 /* Only big enough entries can be clustered */
1229 if (tab->index > (old_index + 2)) {
1230 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1231 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1232 }
1233
1234 /* In rare cases the cache can be full while there is
1235 * free space in hw
1236 */
1237 if (tab->index > MAX_FILER_CACHE_IDX - 1)
1238 return -EBUSY;
1239
1240 return 0;
1241 }
1242
1243 /* Write the bit-pattern from software's buffer to hardware registers */
gfar_write_filer_table(struct gfar_private * priv,struct filer_table * tab)1244 static int gfar_write_filer_table(struct gfar_private *priv,
1245 struct filer_table *tab)
1246 {
1247 u32 i = 0;
1248 if (tab->index > MAX_FILER_IDX - 1)
1249 return -EBUSY;
1250
1251 /* Fill regular entries */
1252 for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
1253 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1254 /* Fill the rest with fall-troughs */
1255 for (; i < MAX_FILER_IDX; i++)
1256 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1257 /* Last entry must be default accept
1258 * because that's what people expect
1259 */
1260 gfar_write_filer(priv, i, 0x20, 0x0);
1261
1262 return 0;
1263 }
1264
gfar_check_capability(struct ethtool_rx_flow_spec * flow,struct gfar_private * priv)1265 static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1266 struct gfar_private *priv)
1267 {
1268
1269 if (flow->flow_type & FLOW_EXT) {
1270 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1271 netdev_warn(priv->ndev,
1272 "User-specific data not supported!\n");
1273 if (~flow->m_ext.vlan_etype)
1274 netdev_warn(priv->ndev,
1275 "VLAN-etype not supported!\n");
1276 }
1277 if (flow->flow_type == IP_USER_FLOW)
1278 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1279 netdev_warn(priv->ndev,
1280 "IP-Version differing from IPv4 not supported!\n");
1281
1282 return 0;
1283 }
1284
gfar_process_filer_changes(struct gfar_private * priv)1285 static int gfar_process_filer_changes(struct gfar_private *priv)
1286 {
1287 struct ethtool_flow_spec_container *j;
1288 struct filer_table *tab;
1289 s32 ret = 0;
1290
1291 /* So index is set to zero, too! */
1292 tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1293 if (tab == NULL)
1294 return -ENOMEM;
1295
1296 /* Now convert the existing filer data from flow_spec into
1297 * filer tables binary format
1298 */
1299 list_for_each_entry(j, &priv->rx_list.list, list) {
1300 ret = gfar_convert_to_filer(&j->fs, tab);
1301 if (ret == -EBUSY) {
1302 netdev_err(priv->ndev,
1303 "Rule not added: No free space!\n");
1304 goto end;
1305 }
1306 if (ret == -1) {
1307 netdev_err(priv->ndev,
1308 "Rule not added: Unsupported Flow-type!\n");
1309 goto end;
1310 }
1311 }
1312
1313 /* Write everything to hardware */
1314 ret = gfar_write_filer_table(priv, tab);
1315 if (ret == -EBUSY) {
1316 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1317 goto end;
1318 }
1319
1320 end:
1321 kfree(tab);
1322 return ret;
1323 }
1324
gfar_invert_masks(struct ethtool_rx_flow_spec * flow)1325 static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1326 {
1327 u32 i = 0;
1328
1329 for (i = 0; i < sizeof(flow->m_u); i++)
1330 flow->m_u.hdata[i] ^= 0xFF;
1331
1332 flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1333 flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1334 flow->m_ext.data[0] ^= cpu_to_be32(~0);
1335 flow->m_ext.data[1] ^= cpu_to_be32(~0);
1336 }
1337
gfar_add_cls(struct gfar_private * priv,struct ethtool_rx_flow_spec * flow)1338 static int gfar_add_cls(struct gfar_private *priv,
1339 struct ethtool_rx_flow_spec *flow)
1340 {
1341 struct ethtool_flow_spec_container *temp, *comp;
1342 int ret = 0;
1343
1344 temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1345 if (temp == NULL)
1346 return -ENOMEM;
1347 memcpy(&temp->fs, flow, sizeof(temp->fs));
1348
1349 gfar_invert_masks(&temp->fs);
1350 ret = gfar_check_capability(&temp->fs, priv);
1351 if (ret)
1352 goto clean_mem;
1353 /* Link in the new element at the right @location */
1354 if (list_empty(&priv->rx_list.list)) {
1355 ret = gfar_check_filer_hardware(priv);
1356 if (ret != 0)
1357 goto clean_mem;
1358 list_add(&temp->list, &priv->rx_list.list);
1359 goto process;
1360 } else {
1361 list_for_each_entry(comp, &priv->rx_list.list, list) {
1362 if (comp->fs.location > flow->location) {
1363 list_add_tail(&temp->list, &comp->list);
1364 goto process;
1365 }
1366 if (comp->fs.location == flow->location) {
1367 netdev_err(priv->ndev,
1368 "Rule not added: ID %d not free!\n",
1369 flow->location);
1370 ret = -EBUSY;
1371 goto clean_mem;
1372 }
1373 }
1374 list_add_tail(&temp->list, &priv->rx_list.list);
1375 }
1376
1377 process:
1378 priv->rx_list.count++;
1379 ret = gfar_process_filer_changes(priv);
1380 if (ret)
1381 goto clean_list;
1382 return ret;
1383
1384 clean_list:
1385 priv->rx_list.count--;
1386 list_del(&temp->list);
1387 clean_mem:
1388 kfree(temp);
1389 return ret;
1390 }
1391
gfar_del_cls(struct gfar_private * priv,u32 loc)1392 static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1393 {
1394 struct ethtool_flow_spec_container *comp;
1395 u32 ret = -EINVAL;
1396
1397 if (list_empty(&priv->rx_list.list))
1398 return ret;
1399
1400 list_for_each_entry(comp, &priv->rx_list.list, list) {
1401 if (comp->fs.location == loc) {
1402 list_del(&comp->list);
1403 kfree(comp);
1404 priv->rx_list.count--;
1405 gfar_process_filer_changes(priv);
1406 ret = 0;
1407 break;
1408 }
1409 }
1410
1411 return ret;
1412 }
1413
gfar_get_cls(struct gfar_private * priv,struct ethtool_rxnfc * cmd)1414 static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1415 {
1416 struct ethtool_flow_spec_container *comp;
1417 u32 ret = -EINVAL;
1418
1419 list_for_each_entry(comp, &priv->rx_list.list, list) {
1420 if (comp->fs.location == cmd->fs.location) {
1421 memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1422 gfar_invert_masks(&cmd->fs);
1423 ret = 0;
1424 break;
1425 }
1426 }
1427
1428 return ret;
1429 }
1430
gfar_get_cls_all(struct gfar_private * priv,struct ethtool_rxnfc * cmd,u32 * rule_locs)1431 static int gfar_get_cls_all(struct gfar_private *priv,
1432 struct ethtool_rxnfc *cmd, u32 *rule_locs)
1433 {
1434 struct ethtool_flow_spec_container *comp;
1435 u32 i = 0;
1436
1437 list_for_each_entry(comp, &priv->rx_list.list, list) {
1438 if (i == cmd->rule_cnt)
1439 return -EMSGSIZE;
1440 rule_locs[i] = comp->fs.location;
1441 i++;
1442 }
1443
1444 cmd->data = MAX_FILER_IDX;
1445 cmd->rule_cnt = i;
1446
1447 return 0;
1448 }
1449
gfar_set_nfc(struct net_device * dev,struct ethtool_rxnfc * cmd)1450 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1451 {
1452 struct gfar_private *priv = netdev_priv(dev);
1453 int ret = 0;
1454
1455 if (test_bit(GFAR_RESETTING, &priv->state))
1456 return -EBUSY;
1457
1458 mutex_lock(&priv->rx_queue_access);
1459
1460 switch (cmd->cmd) {
1461 case ETHTOOL_SRXFH:
1462 ret = gfar_set_hash_opts(priv, cmd);
1463 break;
1464 case ETHTOOL_SRXCLSRLINS:
1465 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1466 cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1467 cmd->fs.location >= MAX_FILER_IDX) {
1468 ret = -EINVAL;
1469 break;
1470 }
1471 ret = gfar_add_cls(priv, &cmd->fs);
1472 break;
1473 case ETHTOOL_SRXCLSRLDEL:
1474 ret = gfar_del_cls(priv, cmd->fs.location);
1475 break;
1476 default:
1477 ret = -EINVAL;
1478 }
1479
1480 mutex_unlock(&priv->rx_queue_access);
1481
1482 return ret;
1483 }
1484
gfar_get_nfc(struct net_device * dev,struct ethtool_rxnfc * cmd,u32 * rule_locs)1485 static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1486 u32 *rule_locs)
1487 {
1488 struct gfar_private *priv = netdev_priv(dev);
1489 int ret = 0;
1490
1491 switch (cmd->cmd) {
1492 case ETHTOOL_GRXRINGS:
1493 cmd->data = priv->num_rx_queues;
1494 break;
1495 case ETHTOOL_GRXCLSRLCNT:
1496 cmd->rule_cnt = priv->rx_list.count;
1497 break;
1498 case ETHTOOL_GRXCLSRULE:
1499 ret = gfar_get_cls(priv, cmd);
1500 break;
1501 case ETHTOOL_GRXCLSRLALL:
1502 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1503 break;
1504 default:
1505 ret = -EINVAL;
1506 break;
1507 }
1508
1509 return ret;
1510 }
1511
gfar_get_ts_info(struct net_device * dev,struct ethtool_ts_info * info)1512 static int gfar_get_ts_info(struct net_device *dev,
1513 struct ethtool_ts_info *info)
1514 {
1515 struct gfar_private *priv = netdev_priv(dev);
1516 struct platform_device *ptp_dev;
1517 struct device_node *ptp_node;
1518 struct qoriq_ptp *ptp = NULL;
1519
1520 info->phc_index = -1;
1521
1522 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1523 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1524 SOF_TIMESTAMPING_SOFTWARE;
1525 return 0;
1526 }
1527
1528 ptp_node = of_find_compatible_node(NULL, NULL, "fsl,etsec-ptp");
1529 if (ptp_node) {
1530 ptp_dev = of_find_device_by_node(ptp_node);
1531 if (ptp_dev)
1532 ptp = platform_get_drvdata(ptp_dev);
1533 }
1534
1535 if (ptp)
1536 info->phc_index = ptp->phc_index;
1537
1538 info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1539 SOF_TIMESTAMPING_RX_HARDWARE |
1540 SOF_TIMESTAMPING_RAW_HARDWARE;
1541 info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1542 (1 << HWTSTAMP_TX_ON);
1543 info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1544 (1 << HWTSTAMP_FILTER_ALL);
1545 return 0;
1546 }
1547
1548 const struct ethtool_ops gfar_ethtool_ops = {
1549 .get_drvinfo = gfar_gdrvinfo,
1550 .get_regs_len = gfar_reglen,
1551 .get_regs = gfar_get_regs,
1552 .get_link = ethtool_op_get_link,
1553 .get_coalesce = gfar_gcoalesce,
1554 .set_coalesce = gfar_scoalesce,
1555 .get_ringparam = gfar_gringparam,
1556 .set_ringparam = gfar_sringparam,
1557 .get_pauseparam = gfar_gpauseparam,
1558 .set_pauseparam = gfar_spauseparam,
1559 .get_strings = gfar_gstrings,
1560 .get_sset_count = gfar_sset_count,
1561 .get_ethtool_stats = gfar_fill_stats,
1562 .get_msglevel = gfar_get_msglevel,
1563 .set_msglevel = gfar_set_msglevel,
1564 #ifdef CONFIG_PM
1565 .get_wol = gfar_get_wol,
1566 .set_wol = gfar_set_wol,
1567 #endif
1568 .set_rxnfc = gfar_set_nfc,
1569 .get_rxnfc = gfar_get_nfc,
1570 .get_ts_info = gfar_get_ts_info,
1571 .get_link_ksettings = phy_ethtool_get_link_ksettings,
1572 .set_link_ksettings = phy_ethtool_set_link_ksettings,
1573 };
1574
