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
51 static 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 */
gfar_gstrings(struct net_device * dev,u32 stringset,u8 * buf)115 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
116 {
117 struct gfar_private *priv = netdev_priv(dev);
118 int i;
119
120 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
121 for (i = 0; i < GFAR_STATS_LEN; i++)
122 ethtool_puts(&buf, stat_gstrings[i]);
123 else
124 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
125 ethtool_puts(&buf, stat_gstrings[i]);
126 }
127
128 /* Fill in an array of 64-bit statistics from various sources.
129 * This array will be appended to the end of the ethtool_stats
130 * structure, and returned to user space
131 */
gfar_fill_stats(struct net_device * dev,struct ethtool_stats * dummy,u64 * buf)132 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
133 u64 *buf)
134 {
135 int i;
136 struct gfar_private *priv = netdev_priv(dev);
137 struct gfar __iomem *regs = priv->gfargrp[0].regs;
138 atomic64_t *extra = (atomic64_t *)&priv->extra_stats;
139
140 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
141 buf[i] = atomic64_read(&extra[i]);
142
143 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
144 u32 __iomem *rmon = (u32 __iomem *) ®s->rmon;
145
146 for (; i < GFAR_STATS_LEN; i++, rmon++)
147 buf[i] = (u64) gfar_read(rmon);
148 }
149 }
150
gfar_sset_count(struct net_device * dev,int sset)151 static int gfar_sset_count(struct net_device *dev, int sset)
152 {
153 struct gfar_private *priv = netdev_priv(dev);
154
155 switch (sset) {
156 case ETH_SS_STATS:
157 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
158 return GFAR_STATS_LEN;
159 else
160 return GFAR_EXTRA_STATS_LEN;
161 default:
162 return -EOPNOTSUPP;
163 }
164 }
165
166 /* Fills in the drvinfo structure with some basic info */
gfar_gdrvinfo(struct net_device * dev,struct ethtool_drvinfo * drvinfo)167 static void gfar_gdrvinfo(struct net_device *dev,
168 struct ethtool_drvinfo *drvinfo)
169 {
170 strscpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
171 }
172
173 /* Return the length of the register structure */
gfar_reglen(struct net_device * dev)174 static int gfar_reglen(struct net_device *dev)
175 {
176 return sizeof (struct gfar);
177 }
178
179 /* Return a dump of the GFAR register space */
gfar_get_regs(struct net_device * dev,struct ethtool_regs * regs,void * regbuf)180 static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
181 void *regbuf)
182 {
183 int i;
184 struct gfar_private *priv = netdev_priv(dev);
185 u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
186 u32 *buf = (u32 *) regbuf;
187
188 for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
189 buf[i] = gfar_read(&theregs[i]);
190 }
191
192 /* Convert microseconds to ethernet clock ticks, which changes
193 * depending on what speed the controller is running at */
gfar_usecs2ticks(struct gfar_private * priv,unsigned int usecs)194 static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
195 unsigned int usecs)
196 {
197 struct net_device *ndev = priv->ndev;
198 struct phy_device *phydev = ndev->phydev;
199 unsigned int count;
200
201 /* The timer is different, depending on the interface speed */
202 switch (phydev->speed) {
203 case SPEED_1000:
204 count = GFAR_GBIT_TIME;
205 break;
206 case SPEED_100:
207 count = GFAR_100_TIME;
208 break;
209 case SPEED_10:
210 default:
211 count = GFAR_10_TIME;
212 break;
213 }
214
215 /* Make sure we return a number greater than 0
216 * if usecs > 0 */
217 return DIV_ROUND_UP(usecs * 1000, count);
218 }
219
220 /* Convert ethernet clock ticks to microseconds */
gfar_ticks2usecs(struct gfar_private * priv,unsigned int ticks)221 static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
222 unsigned int ticks)
223 {
224 struct net_device *ndev = priv->ndev;
225 struct phy_device *phydev = ndev->phydev;
226 unsigned int count;
227
228 /* The timer is different, depending on the interface speed */
229 switch (phydev->speed) {
230 case SPEED_1000:
231 count = GFAR_GBIT_TIME;
232 break;
233 case SPEED_100:
234 count = GFAR_100_TIME;
235 break;
236 case SPEED_10:
237 default:
238 count = GFAR_10_TIME;
239 break;
240 }
241
242 /* Make sure we return a number greater than 0 */
243 /* if ticks is > 0 */
244 return (ticks * count) / 1000;
245 }
246
247 /* Get the coalescing parameters, and put them in the cvals
248 * structure. */
gfar_gcoalesce(struct net_device * dev,struct ethtool_coalesce * cvals,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)249 static int gfar_gcoalesce(struct net_device *dev,
250 struct ethtool_coalesce *cvals,
251 struct kernel_ethtool_coalesce *kernel_coal,
252 struct netlink_ext_ack *extack)
253 {
254 struct gfar_private *priv = netdev_priv(dev);
255 struct gfar_priv_rx_q *rx_queue = NULL;
256 struct gfar_priv_tx_q *tx_queue = NULL;
257 unsigned long rxtime;
258 unsigned long rxcount;
259 unsigned long txtime;
260 unsigned long txcount;
261
262 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
263 return -EOPNOTSUPP;
264
265 if (!dev->phydev)
266 return -ENODEV;
267
268 rx_queue = priv->rx_queue[0];
269 tx_queue = priv->tx_queue[0];
270
271 rxtime = get_ictt_value(rx_queue->rxic);
272 rxcount = get_icft_value(rx_queue->rxic);
273 txtime = get_ictt_value(tx_queue->txic);
274 txcount = get_icft_value(tx_queue->txic);
275 cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
276 cvals->rx_max_coalesced_frames = rxcount;
277
278 cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
279 cvals->tx_max_coalesced_frames = txcount;
280
281 return 0;
282 }
283
284 /* Change the coalescing values.
285 * Both cvals->*_usecs and cvals->*_frames have to be > 0
286 * in order for coalescing to be active
287 */
gfar_scoalesce(struct net_device * dev,struct ethtool_coalesce * cvals,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)288 static int gfar_scoalesce(struct net_device *dev,
289 struct ethtool_coalesce *cvals,
290 struct kernel_ethtool_coalesce *kernel_coal,
291 struct netlink_ext_ack *extack)
292 {
293 struct gfar_private *priv = netdev_priv(dev);
294 int i, err = 0;
295
296 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
297 return -EOPNOTSUPP;
298
299 if (!dev->phydev)
300 return -ENODEV;
301
302 /* Check the bounds of the values */
303 if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
304 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
305 GFAR_MAX_COAL_USECS);
306 return -EINVAL;
307 }
308
309 if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
310 netdev_info(dev, "Coalescing is limited to %d frames\n",
311 GFAR_MAX_COAL_FRAMES);
312 return -EINVAL;
313 }
314
315 /* Check the bounds of the values */
316 if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
317 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
318 GFAR_MAX_COAL_USECS);
319 return -EINVAL;
320 }
321
322 if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
323 netdev_info(dev, "Coalescing is limited to %d frames\n",
324 GFAR_MAX_COAL_FRAMES);
325 return -EINVAL;
326 }
327
328 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
329 cpu_relax();
330
331 /* Set up rx coalescing */
332 if ((cvals->rx_coalesce_usecs == 0) ||
333 (cvals->rx_max_coalesced_frames == 0)) {
334 for (i = 0; i < priv->num_rx_queues; i++)
335 priv->rx_queue[i]->rxcoalescing = 0;
336 } else {
337 for (i = 0; i < priv->num_rx_queues; i++)
338 priv->rx_queue[i]->rxcoalescing = 1;
339 }
340
341 for (i = 0; i < priv->num_rx_queues; i++) {
342 priv->rx_queue[i]->rxic = mk_ic_value(
343 cvals->rx_max_coalesced_frames,
344 gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
345 }
346
347 /* Set up tx coalescing */
348 if ((cvals->tx_coalesce_usecs == 0) ||
349 (cvals->tx_max_coalesced_frames == 0)) {
350 for (i = 0; i < priv->num_tx_queues; i++)
351 priv->tx_queue[i]->txcoalescing = 0;
352 } else {
353 for (i = 0; i < priv->num_tx_queues; i++)
354 priv->tx_queue[i]->txcoalescing = 1;
355 }
356
357 for (i = 0; i < priv->num_tx_queues; i++) {
358 priv->tx_queue[i]->txic = mk_ic_value(
359 cvals->tx_max_coalesced_frames,
360 gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
361 }
362
363 if (dev->flags & IFF_UP) {
364 stop_gfar(dev);
365 err = startup_gfar(dev);
366 } else {
367 gfar_mac_reset(priv);
368 }
369
370 clear_bit_unlock(GFAR_RESETTING, &priv->state);
371
372 return err;
373 }
374
375 /* Fills in rvals with the current ring parameters. Currently,
376 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
377 * jumbo are ignored by the driver */
gfar_gringparam(struct net_device * dev,struct ethtool_ringparam * rvals,struct kernel_ethtool_ringparam * kernel_rvals,struct netlink_ext_ack * extack)378 static void gfar_gringparam(struct net_device *dev,
379 struct ethtool_ringparam *rvals,
380 struct kernel_ethtool_ringparam *kernel_rvals,
381 struct netlink_ext_ack *extack)
382 {
383 struct gfar_private *priv = netdev_priv(dev);
384 struct gfar_priv_tx_q *tx_queue = NULL;
385 struct gfar_priv_rx_q *rx_queue = NULL;
386
387 tx_queue = priv->tx_queue[0];
388 rx_queue = priv->rx_queue[0];
389
390 rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
391 rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
392 rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
393 rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
394
395 /* Values changeable by the user. The valid values are
396 * in the range 1 to the "*_max_pending" counterpart above.
397 */
398 rvals->rx_pending = rx_queue->rx_ring_size;
399 rvals->rx_mini_pending = rx_queue->rx_ring_size;
400 rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
401 rvals->tx_pending = tx_queue->tx_ring_size;
402 }
403
404 /* Change the current ring parameters, stopping the controller if
405 * necessary so that we don't mess things up while we're in motion.
406 */
gfar_sringparam(struct net_device * dev,struct ethtool_ringparam * rvals,struct kernel_ethtool_ringparam * kernel_rvals,struct netlink_ext_ack * extack)407 static int gfar_sringparam(struct net_device *dev,
408 struct ethtool_ringparam *rvals,
409 struct kernel_ethtool_ringparam *kernel_rvals,
410 struct netlink_ext_ack *extack)
411 {
412 struct gfar_private *priv = netdev_priv(dev);
413 int err = 0, i;
414
415 if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
416 return -EINVAL;
417
418 if (!is_power_of_2(rvals->rx_pending)) {
419 netdev_err(dev, "Ring sizes must be a power of 2\n");
420 return -EINVAL;
421 }
422
423 if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
424 return -EINVAL;
425
426 if (!is_power_of_2(rvals->tx_pending)) {
427 netdev_err(dev, "Ring sizes must be a power of 2\n");
428 return -EINVAL;
429 }
430
431 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
432 cpu_relax();
433
434 if (dev->flags & IFF_UP)
435 stop_gfar(dev);
436
437 /* Change the sizes */
438 for (i = 0; i < priv->num_rx_queues; i++)
439 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
440
441 for (i = 0; i < priv->num_tx_queues; i++)
442 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
443
444 /* Rebuild the rings with the new size */
445 if (dev->flags & IFF_UP)
446 err = startup_gfar(dev);
447
448 clear_bit_unlock(GFAR_RESETTING, &priv->state);
449
450 return err;
451 }
452
gfar_gpauseparam(struct net_device * dev,struct ethtool_pauseparam * epause)453 static void gfar_gpauseparam(struct net_device *dev,
454 struct ethtool_pauseparam *epause)
455 {
456 struct gfar_private *priv = netdev_priv(dev);
457
458 epause->autoneg = !!priv->pause_aneg_en;
459 epause->rx_pause = !!priv->rx_pause_en;
460 epause->tx_pause = !!priv->tx_pause_en;
461 }
462
gfar_spauseparam(struct net_device * dev,struct ethtool_pauseparam * epause)463 static int gfar_spauseparam(struct net_device *dev,
464 struct ethtool_pauseparam *epause)
465 {
466 struct gfar_private *priv = netdev_priv(dev);
467 struct phy_device *phydev = dev->phydev;
468 struct gfar __iomem *regs = priv->gfargrp[0].regs;
469
470 if (!phydev)
471 return -ENODEV;
472
473 if (!phy_validate_pause(phydev, epause))
474 return -EINVAL;
475
476 priv->rx_pause_en = priv->tx_pause_en = 0;
477 phy_set_asym_pause(phydev, epause->rx_pause, epause->tx_pause);
478 if (epause->rx_pause) {
479 priv->rx_pause_en = 1;
480
481 if (epause->tx_pause) {
482 priv->tx_pause_en = 1;
483 }
484 } else if (epause->tx_pause) {
485 priv->tx_pause_en = 1;
486 }
487
488 if (epause->autoneg)
489 priv->pause_aneg_en = 1;
490 else
491 priv->pause_aneg_en = 0;
492
493 if (!epause->autoneg) {
494 u32 tempval = gfar_read(®s->maccfg1);
495
496 tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
497
498 priv->tx_actual_en = 0;
499 if (priv->tx_pause_en) {
500 priv->tx_actual_en = 1;
501 tempval |= MACCFG1_TX_FLOW;
502 }
503
504 if (priv->rx_pause_en)
505 tempval |= MACCFG1_RX_FLOW;
506 gfar_write(®s->maccfg1, tempval);
507 }
508
509 return 0;
510 }
511
gfar_set_features(struct net_device * dev,netdev_features_t features)512 int gfar_set_features(struct net_device *dev, netdev_features_t features)
513 {
514 netdev_features_t changed = dev->features ^ features;
515 struct gfar_private *priv = netdev_priv(dev);
516 int err = 0;
517
518 if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
519 NETIF_F_RXCSUM)))
520 return 0;
521
522 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
523 cpu_relax();
524
525 dev->features = features;
526
527 if (dev->flags & IFF_UP) {
528 /* Now we take down the rings to rebuild them */
529 stop_gfar(dev);
530 err = startup_gfar(dev);
531 } else {
532 gfar_mac_reset(priv);
533 }
534
535 clear_bit_unlock(GFAR_RESETTING, &priv->state);
536
537 return err;
538 }
539
gfar_get_msglevel(struct net_device * dev)540 static uint32_t gfar_get_msglevel(struct net_device *dev)
541 {
542 struct gfar_private *priv = netdev_priv(dev);
543
544 return priv->msg_enable;
545 }
546
gfar_set_msglevel(struct net_device * dev,uint32_t data)547 static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
548 {
549 struct gfar_private *priv = netdev_priv(dev);
550
551 priv->msg_enable = data;
552 }
553
554 #ifdef CONFIG_PM
gfar_get_wol(struct net_device * dev,struct ethtool_wolinfo * wol)555 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
556 {
557 struct gfar_private *priv = netdev_priv(dev);
558
559 wol->supported = 0;
560 wol->wolopts = 0;
561
562 if (priv->wol_supported & GFAR_WOL_MAGIC)
563 wol->supported |= WAKE_MAGIC;
564
565 if (priv->wol_supported & GFAR_WOL_FILER_UCAST)
566 wol->supported |= WAKE_UCAST;
567
568 if (priv->wol_opts & GFAR_WOL_MAGIC)
569 wol->wolopts |= WAKE_MAGIC;
570
571 if (priv->wol_opts & GFAR_WOL_FILER_UCAST)
572 wol->wolopts |= WAKE_UCAST;
573 }
574
gfar_set_wol(struct net_device * dev,struct ethtool_wolinfo * wol)575 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
576 {
577 struct gfar_private *priv = netdev_priv(dev);
578 u16 wol_opts = 0;
579 int err;
580
581 if (!priv->wol_supported && wol->wolopts)
582 return -EINVAL;
583
584 if (wol->wolopts & ~(WAKE_MAGIC | WAKE_UCAST))
585 return -EINVAL;
586
587 if (wol->wolopts & WAKE_MAGIC) {
588 wol_opts |= GFAR_WOL_MAGIC;
589 } else {
590 if (wol->wolopts & WAKE_UCAST)
591 wol_opts |= GFAR_WOL_FILER_UCAST;
592 }
593
594 wol_opts &= priv->wol_supported;
595 priv->wol_opts = 0;
596
597 err = device_set_wakeup_enable(priv->dev, wol_opts);
598 if (err)
599 return err;
600
601 priv->wol_opts = wol_opts;
602
603 return 0;
604 }
605 #endif
606
ethflow_to_filer_rules(struct gfar_private * priv,u64 ethflow)607 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
608 {
609 u32 fcr = 0x0, fpr = FPR_FILER_MASK;
610
611 if (ethflow & RXH_L2DA) {
612 fcr = RQFCR_PID_DAH | RQFCR_CMP_NOMATCH |
613 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
614 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
615 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
616 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
617 priv->cur_filer_idx = priv->cur_filer_idx - 1;
618
619 fcr = RQFCR_PID_DAL | RQFCR_CMP_NOMATCH |
620 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
621 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
622 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
623 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
624 priv->cur_filer_idx = priv->cur_filer_idx - 1;
625 }
626
627 if (ethflow & RXH_VLAN) {
628 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
629 RQFCR_AND | RQFCR_HASHTBL_0;
630 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
631 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
632 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
633 priv->cur_filer_idx = priv->cur_filer_idx - 1;
634 }
635
636 if (ethflow & RXH_IP_SRC) {
637 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
638 RQFCR_AND | RQFCR_HASHTBL_0;
639 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
640 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
641 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
642 priv->cur_filer_idx = priv->cur_filer_idx - 1;
643 }
644
645 if (ethflow & (RXH_IP_DST)) {
646 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
647 RQFCR_AND | RQFCR_HASHTBL_0;
648 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
649 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
650 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
651 priv->cur_filer_idx = priv->cur_filer_idx - 1;
652 }
653
654 if (ethflow & RXH_L3_PROTO) {
655 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
656 RQFCR_AND | RQFCR_HASHTBL_0;
657 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
658 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
659 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
660 priv->cur_filer_idx = priv->cur_filer_idx - 1;
661 }
662
663 if (ethflow & RXH_L4_B_0_1) {
664 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
665 RQFCR_AND | RQFCR_HASHTBL_0;
666 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
667 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
668 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
669 priv->cur_filer_idx = priv->cur_filer_idx - 1;
670 }
671
672 if (ethflow & RXH_L4_B_2_3) {
673 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
674 RQFCR_AND | RQFCR_HASHTBL_0;
675 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
676 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
677 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
678 priv->cur_filer_idx = priv->cur_filer_idx - 1;
679 }
680 }
681
gfar_ethflow_to_filer_table(struct gfar_private * priv,u64 ethflow,u64 class)682 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
683 u64 class)
684 {
685 unsigned int cmp_rqfpr;
686 unsigned int *local_rqfpr;
687 unsigned int *local_rqfcr;
688 int i = 0x0, k = 0x0;
689 int j = MAX_FILER_IDX, l = 0x0;
690 int ret = 1;
691
692 local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
693 GFP_KERNEL);
694 local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
695 GFP_KERNEL);
696 if (!local_rqfpr || !local_rqfcr) {
697 ret = 0;
698 goto err;
699 }
700
701 switch (class) {
702 case TCP_V4_FLOW:
703 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
704 break;
705 case UDP_V4_FLOW:
706 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
707 break;
708 case TCP_V6_FLOW:
709 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
710 break;
711 case UDP_V6_FLOW:
712 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
713 break;
714 default:
715 netdev_err(priv->ndev,
716 "Right now this class is not supported\n");
717 ret = 0;
718 goto err;
719 }
720
721 for (i = 0; i < MAX_FILER_IDX + 1; i++) {
722 local_rqfpr[j] = priv->ftp_rqfpr[i];
723 local_rqfcr[j] = priv->ftp_rqfcr[i];
724 j--;
725 if ((priv->ftp_rqfcr[i] ==
726 (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
727 (priv->ftp_rqfpr[i] == cmp_rqfpr))
728 break;
729 }
730
731 if (i == MAX_FILER_IDX + 1) {
732 netdev_err(priv->ndev,
733 "No parse rule found, can't create hash rules\n");
734 ret = 0;
735 goto err;
736 }
737
738 /* If a match was found, then it begins the starting of a cluster rule
739 * if it was already programmed, we need to overwrite these rules
740 */
741 for (l = i+1; l < MAX_FILER_IDX; l++) {
742 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
743 !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
744 priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
745 RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
746 priv->ftp_rqfpr[l] = FPR_FILER_MASK;
747 gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
748 priv->ftp_rqfpr[l]);
749 break;
750 }
751
752 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
753 (priv->ftp_rqfcr[l] & RQFCR_AND))
754 continue;
755 else {
756 local_rqfpr[j] = priv->ftp_rqfpr[l];
757 local_rqfcr[j] = priv->ftp_rqfcr[l];
758 j--;
759 }
760 }
761
762 priv->cur_filer_idx = l - 1;
763
764 /* hash rules */
765 ethflow_to_filer_rules(priv, ethflow);
766
767 /* Write back the popped out rules again */
768 for (k = j+1; k < MAX_FILER_IDX; k++) {
769 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
770 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
771 gfar_write_filer(priv, priv->cur_filer_idx,
772 local_rqfcr[k], local_rqfpr[k]);
773 if (!priv->cur_filer_idx)
774 break;
775 priv->cur_filer_idx = priv->cur_filer_idx - 1;
776 }
777
778 err:
779 kfree(local_rqfcr);
780 kfree(local_rqfpr);
781 return ret;
782 }
783
gfar_set_rxfh_fields(struct net_device * dev,const struct ethtool_rxfh_fields * cmd,struct netlink_ext_ack * extack)784 static int gfar_set_rxfh_fields(struct net_device *dev,
785 const struct ethtool_rxfh_fields *cmd,
786 struct netlink_ext_ack *extack)
787 {
788 struct gfar_private *priv = netdev_priv(dev);
789 int ret;
790
791 if (test_bit(GFAR_RESETTING, &priv->state))
792 return -EBUSY;
793
794 mutex_lock(&priv->rx_queue_access);
795
796 ret = 0;
797 /* write the filer rules here */
798 if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
799 ret = -EINVAL;
800
801 mutex_unlock(&priv->rx_queue_access);
802
803 return ret;
804 }
805
gfar_check_filer_hardware(struct gfar_private * priv)806 static int gfar_check_filer_hardware(struct gfar_private *priv)
807 {
808 struct gfar __iomem *regs = priv->gfargrp[0].regs;
809 u32 i;
810
811 /* Check if we are in FIFO mode */
812 i = gfar_read(®s->ecntrl);
813 i &= ECNTRL_FIFM;
814 if (i == ECNTRL_FIFM) {
815 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
816 i = gfar_read(®s->rctrl);
817 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
818 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
819 netdev_info(priv->ndev,
820 "Receive Queue Filtering enabled\n");
821 } else {
822 netdev_warn(priv->ndev,
823 "Receive Queue Filtering disabled\n");
824 return -EOPNOTSUPP;
825 }
826 }
827 /* Or in standard mode */
828 else {
829 i = gfar_read(®s->rctrl);
830 i &= RCTRL_PRSDEP_MASK;
831 if (i == RCTRL_PRSDEP_MASK) {
832 netdev_info(priv->ndev,
833 "Receive Queue Filtering enabled\n");
834 } else {
835 netdev_warn(priv->ndev,
836 "Receive Queue Filtering disabled\n");
837 return -EOPNOTSUPP;
838 }
839 }
840
841 /* Sets the properties for arbitrary filer rule
842 * to the first 4 Layer 4 Bytes
843 */
844 gfar_write(®s->rbifx, 0xC0C1C2C3);
845 return 0;
846 }
847
848 /* Write a mask to filer cache */
gfar_set_mask(u32 mask,struct filer_table * tab)849 static void gfar_set_mask(u32 mask, struct filer_table *tab)
850 {
851 tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
852 tab->fe[tab->index].prop = mask;
853 tab->index++;
854 }
855
856 /* Sets parse bits (e.g. IP or TCP) */
gfar_set_parse_bits(u32 value,u32 mask,struct filer_table * tab)857 static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
858 {
859 gfar_set_mask(mask, tab);
860 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
861 RQFCR_AND;
862 tab->fe[tab->index].prop = value;
863 tab->index++;
864 }
865
gfar_set_general_attribute(u32 value,u32 mask,u32 flag,struct filer_table * tab)866 static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
867 struct filer_table *tab)
868 {
869 gfar_set_mask(mask, tab);
870 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
871 tab->fe[tab->index].prop = value;
872 tab->index++;
873 }
874
875 /* For setting a tuple of value and mask of type flag
876 * Example:
877 * IP-Src = 10.0.0.0/255.0.0.0
878 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
879 *
880 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
881 * For a don't care mask it gives us a 0
882 *
883 * The check if don't care and the mask adjustment if mask=0 is done for VLAN
884 * and MAC stuff on an upper level (due to missing information on this level).
885 * For these guys we can discard them if they are value=0 and mask=0.
886 *
887 * Further the all masks are one-padded for better hardware efficiency.
888 */
gfar_set_attribute(u32 value,u32 mask,u32 flag,struct filer_table * tab)889 static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
890 struct filer_table *tab)
891 {
892 switch (flag) {
893 /* 3bit */
894 case RQFCR_PID_PRI:
895 if (!(value | mask))
896 return;
897 mask |= RQFCR_PID_PRI_MASK;
898 break;
899 /* 8bit */
900 case RQFCR_PID_L4P:
901 case RQFCR_PID_TOS:
902 if (!~(mask | RQFCR_PID_L4P_MASK))
903 return;
904 if (!mask)
905 mask = ~0;
906 else
907 mask |= RQFCR_PID_L4P_MASK;
908 break;
909 /* 12bit */
910 case RQFCR_PID_VID:
911 if (!(value | mask))
912 return;
913 mask |= RQFCR_PID_VID_MASK;
914 break;
915 /* 16bit */
916 case RQFCR_PID_DPT:
917 case RQFCR_PID_SPT:
918 case RQFCR_PID_ETY:
919 if (!~(mask | RQFCR_PID_PORT_MASK))
920 return;
921 if (!mask)
922 mask = ~0;
923 else
924 mask |= RQFCR_PID_PORT_MASK;
925 break;
926 /* 24bit */
927 case RQFCR_PID_DAH:
928 case RQFCR_PID_DAL:
929 case RQFCR_PID_SAH:
930 case RQFCR_PID_SAL:
931 if (!(value | mask))
932 return;
933 mask |= RQFCR_PID_MAC_MASK;
934 break;
935 /* for all real 32bit masks */
936 default:
937 if (!~mask)
938 return;
939 if (!mask)
940 mask = ~0;
941 break;
942 }
943 gfar_set_general_attribute(value, mask, flag, tab);
944 }
945
946 /* 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)947 static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
948 struct ethtool_tcpip4_spec *mask,
949 struct filer_table *tab)
950 {
951 gfar_set_attribute(be32_to_cpu(value->ip4src),
952 be32_to_cpu(mask->ip4src),
953 RQFCR_PID_SIA, tab);
954 gfar_set_attribute(be32_to_cpu(value->ip4dst),
955 be32_to_cpu(mask->ip4dst),
956 RQFCR_PID_DIA, tab);
957 gfar_set_attribute(be16_to_cpu(value->pdst),
958 be16_to_cpu(mask->pdst),
959 RQFCR_PID_DPT, tab);
960 gfar_set_attribute(be16_to_cpu(value->psrc),
961 be16_to_cpu(mask->psrc),
962 RQFCR_PID_SPT, tab);
963 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
964 }
965
966 /* 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)967 static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
968 struct ethtool_usrip4_spec *mask,
969 struct filer_table *tab)
970 {
971 gfar_set_attribute(be32_to_cpu(value->ip4src),
972 be32_to_cpu(mask->ip4src),
973 RQFCR_PID_SIA, tab);
974 gfar_set_attribute(be32_to_cpu(value->ip4dst),
975 be32_to_cpu(mask->ip4dst),
976 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(be32_to_cpu(value->l4_4_bytes),
980 be32_to_cpu(mask->l4_4_bytes),
981 RQFCR_PID_ARB, tab);
982
983 }
984
985 /* Translates value and mask for ETHER spec */
gfar_set_ether(struct ethhdr * value,struct ethhdr * mask,struct filer_table * tab)986 static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
987 struct filer_table *tab)
988 {
989 u32 upper_temp_mask = 0;
990 u32 lower_temp_mask = 0;
991
992 /* Source address */
993 if (!is_broadcast_ether_addr(mask->h_source)) {
994 if (is_zero_ether_addr(mask->h_source)) {
995 upper_temp_mask = 0xFFFFFFFF;
996 lower_temp_mask = 0xFFFFFFFF;
997 } else {
998 upper_temp_mask = mask->h_source[0] << 16 |
999 mask->h_source[1] << 8 |
1000 mask->h_source[2];
1001 lower_temp_mask = mask->h_source[3] << 16 |
1002 mask->h_source[4] << 8 |
1003 mask->h_source[5];
1004 }
1005 /* Upper 24bit */
1006 gfar_set_attribute(value->h_source[0] << 16 |
1007 value->h_source[1] << 8 |
1008 value->h_source[2],
1009 upper_temp_mask, RQFCR_PID_SAH, tab);
1010 /* And the same for the lower part */
1011 gfar_set_attribute(value->h_source[3] << 16 |
1012 value->h_source[4] << 8 |
1013 value->h_source[5],
1014 lower_temp_mask, RQFCR_PID_SAL, tab);
1015 }
1016 /* Destination address */
1017 if (!is_broadcast_ether_addr(mask->h_dest)) {
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 if (is_zero_ether_addr(mask->h_dest)) {
1024 upper_temp_mask = 0xFFFFFFFF;
1025 lower_temp_mask = 0xFFFFFFFF;
1026 } else {
1027 upper_temp_mask = mask->h_dest[0] << 16 |
1028 mask->h_dest[1] << 8 |
1029 mask->h_dest[2];
1030 lower_temp_mask = mask->h_dest[3] << 16 |
1031 mask->h_dest[4] << 8 |
1032 mask->h_dest[5];
1033 }
1034
1035 /* Upper 24bit */
1036 gfar_set_attribute(value->h_dest[0] << 16 |
1037 value->h_dest[1] << 8 |
1038 value->h_dest[2],
1039 upper_temp_mask, RQFCR_PID_DAH, tab);
1040 /* And the same for the lower part */
1041 gfar_set_attribute(value->h_dest[3] << 16 |
1042 value->h_dest[4] << 8 |
1043 value->h_dest[5],
1044 lower_temp_mask, RQFCR_PID_DAL, tab);
1045 }
1046 }
1047
1048 gfar_set_attribute(be16_to_cpu(value->h_proto),
1049 be16_to_cpu(mask->h_proto),
1050 RQFCR_PID_ETY, tab);
1051 }
1052
vlan_tci_vid(struct ethtool_rx_flow_spec * rule)1053 static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1054 {
1055 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1056 }
1057
vlan_tci_vidm(struct ethtool_rx_flow_spec * rule)1058 static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1059 {
1060 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1061 }
1062
vlan_tci_cfi(struct ethtool_rx_flow_spec * rule)1063 static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1064 {
1065 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1066 }
1067
vlan_tci_cfim(struct ethtool_rx_flow_spec * rule)1068 static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1069 {
1070 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1071 }
1072
vlan_tci_prio(struct ethtool_rx_flow_spec * rule)1073 static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1074 {
1075 return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1076 VLAN_PRIO_SHIFT;
1077 }
1078
vlan_tci_priom(struct ethtool_rx_flow_spec * rule)1079 static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1080 {
1081 return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1082 VLAN_PRIO_SHIFT;
1083 }
1084
1085 /* Convert a rule to binary filter format of gianfar */
gfar_convert_to_filer(struct ethtool_rx_flow_spec * rule,struct filer_table * tab)1086 static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1087 struct filer_table *tab)
1088 {
1089 u32 vlan = 0, vlan_mask = 0;
1090 u32 id = 0, id_mask = 0;
1091 u32 cfi = 0, cfi_mask = 0;
1092 u32 prio = 0, prio_mask = 0;
1093 u32 old_index = tab->index;
1094
1095 /* Check if vlan is wanted */
1096 if ((rule->flow_type & FLOW_EXT) &&
1097 (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1098 if (!rule->m_ext.vlan_tci)
1099 rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1100
1101 vlan = RQFPR_VLN;
1102 vlan_mask = RQFPR_VLN;
1103
1104 /* Separate the fields */
1105 id = vlan_tci_vid(rule);
1106 id_mask = vlan_tci_vidm(rule);
1107 cfi = vlan_tci_cfi(rule);
1108 cfi_mask = vlan_tci_cfim(rule);
1109 prio = vlan_tci_prio(rule);
1110 prio_mask = vlan_tci_priom(rule);
1111
1112 if (cfi_mask) {
1113 if (cfi)
1114 vlan |= RQFPR_CFI;
1115 vlan_mask |= RQFPR_CFI;
1116 }
1117 }
1118
1119 switch (rule->flow_type & ~FLOW_EXT) {
1120 case TCP_V4_FLOW:
1121 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1122 RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1123 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1124 &rule->m_u.tcp_ip4_spec, tab);
1125 break;
1126 case UDP_V4_FLOW:
1127 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1128 RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1129 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1130 &rule->m_u.udp_ip4_spec, tab);
1131 break;
1132 case SCTP_V4_FLOW:
1133 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1134 tab);
1135 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1136 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1137 (struct ethtool_tcpip4_spec *)&rule->m_u,
1138 tab);
1139 break;
1140 case IP_USER_FLOW:
1141 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1142 tab);
1143 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1144 (struct ethtool_usrip4_spec *) &rule->m_u,
1145 tab);
1146 break;
1147 case ETHER_FLOW:
1148 if (vlan)
1149 gfar_set_parse_bits(vlan, vlan_mask, tab);
1150 gfar_set_ether((struct ethhdr *) &rule->h_u,
1151 (struct ethhdr *) &rule->m_u, tab);
1152 break;
1153 default:
1154 return -1;
1155 }
1156
1157 /* Set the vlan attributes in the end */
1158 if (vlan) {
1159 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1160 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1161 }
1162
1163 /* If there has been nothing written till now, it must be a default */
1164 if (tab->index == old_index) {
1165 gfar_set_mask(0xFFFFFFFF, tab);
1166 tab->fe[tab->index].ctrl = 0x20;
1167 tab->fe[tab->index].prop = 0x0;
1168 tab->index++;
1169 }
1170
1171 /* Remove last AND */
1172 tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1173
1174 /* Specify which queue to use or to drop */
1175 if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1176 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1177 else
1178 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1179
1180 /* Only big enough entries can be clustered */
1181 if (tab->index > (old_index + 2)) {
1182 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1183 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1184 }
1185
1186 /* In rare cases the cache can be full while there is
1187 * free space in hw
1188 */
1189 if (tab->index > MAX_FILER_CACHE_IDX - 1)
1190 return -EBUSY;
1191
1192 return 0;
1193 }
1194
1195 /* Write the bit-pattern from software's buffer to hardware registers */
gfar_write_filer_table(struct gfar_private * priv,struct filer_table * tab)1196 static int gfar_write_filer_table(struct gfar_private *priv,
1197 struct filer_table *tab)
1198 {
1199 u32 i = 0;
1200 if (tab->index > MAX_FILER_IDX - 1)
1201 return -EBUSY;
1202
1203 /* Fill regular entries */
1204 for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
1205 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1206 /* Fill the rest with fall-troughs */
1207 for (; i < MAX_FILER_IDX; i++)
1208 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1209 /* Last entry must be default accept
1210 * because that's what people expect
1211 */
1212 gfar_write_filer(priv, i, 0x20, 0x0);
1213
1214 return 0;
1215 }
1216
gfar_check_capability(struct ethtool_rx_flow_spec * flow,struct gfar_private * priv)1217 static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1218 struct gfar_private *priv)
1219 {
1220
1221 if (flow->flow_type & FLOW_EXT) {
1222 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1223 netdev_warn(priv->ndev,
1224 "User-specific data not supported!\n");
1225 if (~flow->m_ext.vlan_etype)
1226 netdev_warn(priv->ndev,
1227 "VLAN-etype not supported!\n");
1228 }
1229 if (flow->flow_type == IP_USER_FLOW)
1230 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1231 netdev_warn(priv->ndev,
1232 "IP-Version differing from IPv4 not supported!\n");
1233
1234 return 0;
1235 }
1236
gfar_process_filer_changes(struct gfar_private * priv)1237 static int gfar_process_filer_changes(struct gfar_private *priv)
1238 {
1239 struct ethtool_flow_spec_container *j;
1240 struct filer_table *tab;
1241 s32 ret = 0;
1242
1243 /* So index is set to zero, too! */
1244 tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1245 if (tab == NULL)
1246 return -ENOMEM;
1247
1248 /* Now convert the existing filer data from flow_spec into
1249 * filer tables binary format
1250 */
1251 list_for_each_entry(j, &priv->rx_list.list, list) {
1252 ret = gfar_convert_to_filer(&j->fs, tab);
1253 if (ret == -EBUSY) {
1254 netdev_err(priv->ndev,
1255 "Rule not added: No free space!\n");
1256 goto end;
1257 }
1258 if (ret == -1) {
1259 netdev_err(priv->ndev,
1260 "Rule not added: Unsupported Flow-type!\n");
1261 goto end;
1262 }
1263 }
1264
1265 /* Write everything to hardware */
1266 ret = gfar_write_filer_table(priv, tab);
1267 if (ret == -EBUSY) {
1268 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1269 goto end;
1270 }
1271
1272 end:
1273 kfree(tab);
1274 return ret;
1275 }
1276
gfar_invert_masks(struct ethtool_rx_flow_spec * flow)1277 static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1278 {
1279 u32 i = 0;
1280
1281 for (i = 0; i < sizeof(flow->m_u); i++)
1282 flow->m_u.hdata[i] ^= 0xFF;
1283
1284 flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1285 flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1286 flow->m_ext.data[0] ^= cpu_to_be32(~0);
1287 flow->m_ext.data[1] ^= cpu_to_be32(~0);
1288 }
1289
gfar_add_cls(struct gfar_private * priv,struct ethtool_rx_flow_spec * flow)1290 static int gfar_add_cls(struct gfar_private *priv,
1291 struct ethtool_rx_flow_spec *flow)
1292 {
1293 struct ethtool_flow_spec_container *temp, *comp;
1294 int ret = 0;
1295
1296 temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1297 if (temp == NULL)
1298 return -ENOMEM;
1299 memcpy(&temp->fs, flow, sizeof(temp->fs));
1300
1301 gfar_invert_masks(&temp->fs);
1302 ret = gfar_check_capability(&temp->fs, priv);
1303 if (ret)
1304 goto clean_mem;
1305 /* Link in the new element at the right @location */
1306 if (list_empty(&priv->rx_list.list)) {
1307 ret = gfar_check_filer_hardware(priv);
1308 if (ret != 0)
1309 goto clean_mem;
1310 list_add(&temp->list, &priv->rx_list.list);
1311 goto process;
1312 } else {
1313 list_for_each_entry(comp, &priv->rx_list.list, list) {
1314 if (comp->fs.location > flow->location) {
1315 list_add_tail(&temp->list, &comp->list);
1316 goto process;
1317 }
1318 if (comp->fs.location == flow->location) {
1319 netdev_err(priv->ndev,
1320 "Rule not added: ID %d not free!\n",
1321 flow->location);
1322 ret = -EBUSY;
1323 goto clean_mem;
1324 }
1325 }
1326 list_add_tail(&temp->list, &priv->rx_list.list);
1327 }
1328
1329 process:
1330 priv->rx_list.count++;
1331 ret = gfar_process_filer_changes(priv);
1332 if (ret)
1333 goto clean_list;
1334 return ret;
1335
1336 clean_list:
1337 priv->rx_list.count--;
1338 list_del(&temp->list);
1339 clean_mem:
1340 kfree(temp);
1341 return ret;
1342 }
1343
gfar_del_cls(struct gfar_private * priv,u32 loc)1344 static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1345 {
1346 struct ethtool_flow_spec_container *comp;
1347 u32 ret = -EINVAL;
1348
1349 if (list_empty(&priv->rx_list.list))
1350 return ret;
1351
1352 list_for_each_entry(comp, &priv->rx_list.list, list) {
1353 if (comp->fs.location == loc) {
1354 list_del(&comp->list);
1355 kfree(comp);
1356 priv->rx_list.count--;
1357 gfar_process_filer_changes(priv);
1358 ret = 0;
1359 break;
1360 }
1361 }
1362
1363 return ret;
1364 }
1365
gfar_get_cls(struct gfar_private * priv,struct ethtool_rxnfc * cmd)1366 static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1367 {
1368 struct ethtool_flow_spec_container *comp;
1369 u32 ret = -EINVAL;
1370
1371 list_for_each_entry(comp, &priv->rx_list.list, list) {
1372 if (comp->fs.location == cmd->fs.location) {
1373 memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1374 gfar_invert_masks(&cmd->fs);
1375 ret = 0;
1376 break;
1377 }
1378 }
1379
1380 return ret;
1381 }
1382
gfar_get_cls_all(struct gfar_private * priv,struct ethtool_rxnfc * cmd,u32 * rule_locs)1383 static int gfar_get_cls_all(struct gfar_private *priv,
1384 struct ethtool_rxnfc *cmd, u32 *rule_locs)
1385 {
1386 struct ethtool_flow_spec_container *comp;
1387 u32 i = 0;
1388
1389 list_for_each_entry(comp, &priv->rx_list.list, list) {
1390 if (i == cmd->rule_cnt)
1391 return -EMSGSIZE;
1392 rule_locs[i] = comp->fs.location;
1393 i++;
1394 }
1395
1396 cmd->data = MAX_FILER_IDX;
1397 cmd->rule_cnt = i;
1398
1399 return 0;
1400 }
1401
gfar_set_nfc(struct net_device * dev,struct ethtool_rxnfc * cmd)1402 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1403 {
1404 struct gfar_private *priv = netdev_priv(dev);
1405 int ret = 0;
1406
1407 if (test_bit(GFAR_RESETTING, &priv->state))
1408 return -EBUSY;
1409
1410 mutex_lock(&priv->rx_queue_access);
1411
1412 switch (cmd->cmd) {
1413 case ETHTOOL_SRXCLSRLINS:
1414 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1415 cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1416 cmd->fs.location >= MAX_FILER_IDX) {
1417 ret = -EINVAL;
1418 break;
1419 }
1420 ret = gfar_add_cls(priv, &cmd->fs);
1421 break;
1422 case ETHTOOL_SRXCLSRLDEL:
1423 ret = gfar_del_cls(priv, cmd->fs.location);
1424 break;
1425 default:
1426 ret = -EINVAL;
1427 }
1428
1429 mutex_unlock(&priv->rx_queue_access);
1430
1431 return ret;
1432 }
1433
gfar_get_nfc(struct net_device * dev,struct ethtool_rxnfc * cmd,u32 * rule_locs)1434 static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1435 u32 *rule_locs)
1436 {
1437 struct gfar_private *priv = netdev_priv(dev);
1438 int ret = 0;
1439
1440 switch (cmd->cmd) {
1441 case ETHTOOL_GRXRINGS:
1442 cmd->data = priv->num_rx_queues;
1443 break;
1444 case ETHTOOL_GRXCLSRLCNT:
1445 cmd->rule_cnt = priv->rx_list.count;
1446 break;
1447 case ETHTOOL_GRXCLSRULE:
1448 ret = gfar_get_cls(priv, cmd);
1449 break;
1450 case ETHTOOL_GRXCLSRLALL:
1451 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1452 break;
1453 default:
1454 ret = -EINVAL;
1455 break;
1456 }
1457
1458 return ret;
1459 }
1460
gfar_get_ts_info(struct net_device * dev,struct kernel_ethtool_ts_info * info)1461 static int gfar_get_ts_info(struct net_device *dev,
1462 struct kernel_ethtool_ts_info *info)
1463 {
1464 struct gfar_private *priv = netdev_priv(dev);
1465 struct platform_device *ptp_dev;
1466 struct device_node *ptp_node;
1467 struct ptp_qoriq *ptp = NULL;
1468
1469 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1470 info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE;
1471 return 0;
1472 }
1473
1474 ptp_node = of_find_compatible_node(NULL, NULL, "fsl,etsec-ptp");
1475 if (ptp_node) {
1476 ptp_dev = of_find_device_by_node(ptp_node);
1477 of_node_put(ptp_node);
1478 if (ptp_dev)
1479 ptp = platform_get_drvdata(ptp_dev);
1480 }
1481
1482 if (ptp)
1483 info->phc_index = ptp->phc_index;
1484
1485 info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1486 SOF_TIMESTAMPING_RX_HARDWARE |
1487 SOF_TIMESTAMPING_RAW_HARDWARE |
1488 SOF_TIMESTAMPING_TX_SOFTWARE;
1489 info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1490 (1 << HWTSTAMP_TX_ON);
1491 info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1492 (1 << HWTSTAMP_FILTER_ALL);
1493 return 0;
1494 }
1495
1496 const struct ethtool_ops gfar_ethtool_ops = {
1497 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1498 ETHTOOL_COALESCE_MAX_FRAMES,
1499 .get_drvinfo = gfar_gdrvinfo,
1500 .get_regs_len = gfar_reglen,
1501 .get_regs = gfar_get_regs,
1502 .get_link = ethtool_op_get_link,
1503 .get_coalesce = gfar_gcoalesce,
1504 .set_coalesce = gfar_scoalesce,
1505 .get_ringparam = gfar_gringparam,
1506 .set_ringparam = gfar_sringparam,
1507 .get_pauseparam = gfar_gpauseparam,
1508 .set_pauseparam = gfar_spauseparam,
1509 .get_strings = gfar_gstrings,
1510 .get_sset_count = gfar_sset_count,
1511 .get_ethtool_stats = gfar_fill_stats,
1512 .get_msglevel = gfar_get_msglevel,
1513 .set_msglevel = gfar_set_msglevel,
1514 #ifdef CONFIG_PM
1515 .get_wol = gfar_get_wol,
1516 .set_wol = gfar_set_wol,
1517 #endif
1518 .set_rxnfc = gfar_set_nfc,
1519 .get_rxnfc = gfar_get_nfc,
1520 .set_rxfh_fields = gfar_set_rxfh_fields,
1521 .get_ts_info = gfar_get_ts_info,
1522 .get_link_ksettings = phy_ethtool_get_link_ksettings,
1523 .set_link_ksettings = phy_ethtool_set_link_ksettings,
1524 };
1525