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_hash_opts(struct gfar_private * priv,struct ethtool_rxnfc * cmd)784 static int gfar_set_hash_opts(struct gfar_private *priv,
785 struct ethtool_rxnfc *cmd)
786 {
787 /* write the filer rules here */
788 if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
789 return -EINVAL;
790
791 return 0;
792 }
793
gfar_check_filer_hardware(struct gfar_private * priv)794 static int gfar_check_filer_hardware(struct gfar_private *priv)
795 {
796 struct gfar __iomem *regs = priv->gfargrp[0].regs;
797 u32 i;
798
799 /* Check if we are in FIFO mode */
800 i = gfar_read(®s->ecntrl);
801 i &= ECNTRL_FIFM;
802 if (i == ECNTRL_FIFM) {
803 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
804 i = gfar_read(®s->rctrl);
805 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
806 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
807 netdev_info(priv->ndev,
808 "Receive Queue Filtering enabled\n");
809 } else {
810 netdev_warn(priv->ndev,
811 "Receive Queue Filtering disabled\n");
812 return -EOPNOTSUPP;
813 }
814 }
815 /* Or in standard mode */
816 else {
817 i = gfar_read(®s->rctrl);
818 i &= RCTRL_PRSDEP_MASK;
819 if (i == RCTRL_PRSDEP_MASK) {
820 netdev_info(priv->ndev,
821 "Receive Queue Filtering enabled\n");
822 } else {
823 netdev_warn(priv->ndev,
824 "Receive Queue Filtering disabled\n");
825 return -EOPNOTSUPP;
826 }
827 }
828
829 /* Sets the properties for arbitrary filer rule
830 * to the first 4 Layer 4 Bytes
831 */
832 gfar_write(®s->rbifx, 0xC0C1C2C3);
833 return 0;
834 }
835
836 /* Write a mask to filer cache */
gfar_set_mask(u32 mask,struct filer_table * tab)837 static void gfar_set_mask(u32 mask, struct filer_table *tab)
838 {
839 tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
840 tab->fe[tab->index].prop = mask;
841 tab->index++;
842 }
843
844 /* Sets parse bits (e.g. IP or TCP) */
gfar_set_parse_bits(u32 value,u32 mask,struct filer_table * tab)845 static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
846 {
847 gfar_set_mask(mask, tab);
848 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
849 RQFCR_AND;
850 tab->fe[tab->index].prop = value;
851 tab->index++;
852 }
853
gfar_set_general_attribute(u32 value,u32 mask,u32 flag,struct filer_table * tab)854 static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
855 struct filer_table *tab)
856 {
857 gfar_set_mask(mask, tab);
858 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
859 tab->fe[tab->index].prop = value;
860 tab->index++;
861 }
862
863 /* For setting a tuple of value and mask of type flag
864 * Example:
865 * IP-Src = 10.0.0.0/255.0.0.0
866 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
867 *
868 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
869 * For a don't care mask it gives us a 0
870 *
871 * The check if don't care and the mask adjustment if mask=0 is done for VLAN
872 * and MAC stuff on an upper level (due to missing information on this level).
873 * For these guys we can discard them if they are value=0 and mask=0.
874 *
875 * Further the all masks are one-padded for better hardware efficiency.
876 */
gfar_set_attribute(u32 value,u32 mask,u32 flag,struct filer_table * tab)877 static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
878 struct filer_table *tab)
879 {
880 switch (flag) {
881 /* 3bit */
882 case RQFCR_PID_PRI:
883 if (!(value | mask))
884 return;
885 mask |= RQFCR_PID_PRI_MASK;
886 break;
887 /* 8bit */
888 case RQFCR_PID_L4P:
889 case RQFCR_PID_TOS:
890 if (!~(mask | RQFCR_PID_L4P_MASK))
891 return;
892 if (!mask)
893 mask = ~0;
894 else
895 mask |= RQFCR_PID_L4P_MASK;
896 break;
897 /* 12bit */
898 case RQFCR_PID_VID:
899 if (!(value | mask))
900 return;
901 mask |= RQFCR_PID_VID_MASK;
902 break;
903 /* 16bit */
904 case RQFCR_PID_DPT:
905 case RQFCR_PID_SPT:
906 case RQFCR_PID_ETY:
907 if (!~(mask | RQFCR_PID_PORT_MASK))
908 return;
909 if (!mask)
910 mask = ~0;
911 else
912 mask |= RQFCR_PID_PORT_MASK;
913 break;
914 /* 24bit */
915 case RQFCR_PID_DAH:
916 case RQFCR_PID_DAL:
917 case RQFCR_PID_SAH:
918 case RQFCR_PID_SAL:
919 if (!(value | mask))
920 return;
921 mask |= RQFCR_PID_MAC_MASK;
922 break;
923 /* for all real 32bit masks */
924 default:
925 if (!~mask)
926 return;
927 if (!mask)
928 mask = ~0;
929 break;
930 }
931 gfar_set_general_attribute(value, mask, flag, tab);
932 }
933
934 /* 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)935 static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
936 struct ethtool_tcpip4_spec *mask,
937 struct filer_table *tab)
938 {
939 gfar_set_attribute(be32_to_cpu(value->ip4src),
940 be32_to_cpu(mask->ip4src),
941 RQFCR_PID_SIA, tab);
942 gfar_set_attribute(be32_to_cpu(value->ip4dst),
943 be32_to_cpu(mask->ip4dst),
944 RQFCR_PID_DIA, tab);
945 gfar_set_attribute(be16_to_cpu(value->pdst),
946 be16_to_cpu(mask->pdst),
947 RQFCR_PID_DPT, tab);
948 gfar_set_attribute(be16_to_cpu(value->psrc),
949 be16_to_cpu(mask->psrc),
950 RQFCR_PID_SPT, tab);
951 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
952 }
953
954 /* 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)955 static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
956 struct ethtool_usrip4_spec *mask,
957 struct filer_table *tab)
958 {
959 gfar_set_attribute(be32_to_cpu(value->ip4src),
960 be32_to_cpu(mask->ip4src),
961 RQFCR_PID_SIA, tab);
962 gfar_set_attribute(be32_to_cpu(value->ip4dst),
963 be32_to_cpu(mask->ip4dst),
964 RQFCR_PID_DIA, tab);
965 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
966 gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
967 gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
968 be32_to_cpu(mask->l4_4_bytes),
969 RQFCR_PID_ARB, tab);
970
971 }
972
973 /* Translates value and mask for ETHER spec */
gfar_set_ether(struct ethhdr * value,struct ethhdr * mask,struct filer_table * tab)974 static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
975 struct filer_table *tab)
976 {
977 u32 upper_temp_mask = 0;
978 u32 lower_temp_mask = 0;
979
980 /* Source address */
981 if (!is_broadcast_ether_addr(mask->h_source)) {
982 if (is_zero_ether_addr(mask->h_source)) {
983 upper_temp_mask = 0xFFFFFFFF;
984 lower_temp_mask = 0xFFFFFFFF;
985 } else {
986 upper_temp_mask = mask->h_source[0] << 16 |
987 mask->h_source[1] << 8 |
988 mask->h_source[2];
989 lower_temp_mask = mask->h_source[3] << 16 |
990 mask->h_source[4] << 8 |
991 mask->h_source[5];
992 }
993 /* Upper 24bit */
994 gfar_set_attribute(value->h_source[0] << 16 |
995 value->h_source[1] << 8 |
996 value->h_source[2],
997 upper_temp_mask, RQFCR_PID_SAH, tab);
998 /* And the same for the lower part */
999 gfar_set_attribute(value->h_source[3] << 16 |
1000 value->h_source[4] << 8 |
1001 value->h_source[5],
1002 lower_temp_mask, RQFCR_PID_SAL, tab);
1003 }
1004 /* Destination address */
1005 if (!is_broadcast_ether_addr(mask->h_dest)) {
1006 /* Special for destination is limited broadcast */
1007 if ((is_broadcast_ether_addr(value->h_dest) &&
1008 is_zero_ether_addr(mask->h_dest))) {
1009 gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1010 } else {
1011 if (is_zero_ether_addr(mask->h_dest)) {
1012 upper_temp_mask = 0xFFFFFFFF;
1013 lower_temp_mask = 0xFFFFFFFF;
1014 } else {
1015 upper_temp_mask = mask->h_dest[0] << 16 |
1016 mask->h_dest[1] << 8 |
1017 mask->h_dest[2];
1018 lower_temp_mask = mask->h_dest[3] << 16 |
1019 mask->h_dest[4] << 8 |
1020 mask->h_dest[5];
1021 }
1022
1023 /* Upper 24bit */
1024 gfar_set_attribute(value->h_dest[0] << 16 |
1025 value->h_dest[1] << 8 |
1026 value->h_dest[2],
1027 upper_temp_mask, RQFCR_PID_DAH, tab);
1028 /* And the same for the lower part */
1029 gfar_set_attribute(value->h_dest[3] << 16 |
1030 value->h_dest[4] << 8 |
1031 value->h_dest[5],
1032 lower_temp_mask, RQFCR_PID_DAL, tab);
1033 }
1034 }
1035
1036 gfar_set_attribute(be16_to_cpu(value->h_proto),
1037 be16_to_cpu(mask->h_proto),
1038 RQFCR_PID_ETY, tab);
1039 }
1040
vlan_tci_vid(struct ethtool_rx_flow_spec * rule)1041 static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1042 {
1043 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1044 }
1045
vlan_tci_vidm(struct ethtool_rx_flow_spec * rule)1046 static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1047 {
1048 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1049 }
1050
vlan_tci_cfi(struct ethtool_rx_flow_spec * rule)1051 static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1052 {
1053 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1054 }
1055
vlan_tci_cfim(struct ethtool_rx_flow_spec * rule)1056 static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1057 {
1058 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1059 }
1060
vlan_tci_prio(struct ethtool_rx_flow_spec * rule)1061 static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1062 {
1063 return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1064 VLAN_PRIO_SHIFT;
1065 }
1066
vlan_tci_priom(struct ethtool_rx_flow_spec * rule)1067 static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1068 {
1069 return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1070 VLAN_PRIO_SHIFT;
1071 }
1072
1073 /* Convert a rule to binary filter format of gianfar */
gfar_convert_to_filer(struct ethtool_rx_flow_spec * rule,struct filer_table * tab)1074 static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1075 struct filer_table *tab)
1076 {
1077 u32 vlan = 0, vlan_mask = 0;
1078 u32 id = 0, id_mask = 0;
1079 u32 cfi = 0, cfi_mask = 0;
1080 u32 prio = 0, prio_mask = 0;
1081 u32 old_index = tab->index;
1082
1083 /* Check if vlan is wanted */
1084 if ((rule->flow_type & FLOW_EXT) &&
1085 (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1086 if (!rule->m_ext.vlan_tci)
1087 rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1088
1089 vlan = RQFPR_VLN;
1090 vlan_mask = RQFPR_VLN;
1091
1092 /* Separate the fields */
1093 id = vlan_tci_vid(rule);
1094 id_mask = vlan_tci_vidm(rule);
1095 cfi = vlan_tci_cfi(rule);
1096 cfi_mask = vlan_tci_cfim(rule);
1097 prio = vlan_tci_prio(rule);
1098 prio_mask = vlan_tci_priom(rule);
1099
1100 if (cfi_mask) {
1101 if (cfi)
1102 vlan |= RQFPR_CFI;
1103 vlan_mask |= RQFPR_CFI;
1104 }
1105 }
1106
1107 switch (rule->flow_type & ~FLOW_EXT) {
1108 case TCP_V4_FLOW:
1109 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1110 RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1111 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1112 &rule->m_u.tcp_ip4_spec, tab);
1113 break;
1114 case UDP_V4_FLOW:
1115 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1116 RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1117 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1118 &rule->m_u.udp_ip4_spec, tab);
1119 break;
1120 case SCTP_V4_FLOW:
1121 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1122 tab);
1123 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1124 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1125 (struct ethtool_tcpip4_spec *)&rule->m_u,
1126 tab);
1127 break;
1128 case IP_USER_FLOW:
1129 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1130 tab);
1131 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1132 (struct ethtool_usrip4_spec *) &rule->m_u,
1133 tab);
1134 break;
1135 case ETHER_FLOW:
1136 if (vlan)
1137 gfar_set_parse_bits(vlan, vlan_mask, tab);
1138 gfar_set_ether((struct ethhdr *) &rule->h_u,
1139 (struct ethhdr *) &rule->m_u, tab);
1140 break;
1141 default:
1142 return -1;
1143 }
1144
1145 /* Set the vlan attributes in the end */
1146 if (vlan) {
1147 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1148 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1149 }
1150
1151 /* If there has been nothing written till now, it must be a default */
1152 if (tab->index == old_index) {
1153 gfar_set_mask(0xFFFFFFFF, tab);
1154 tab->fe[tab->index].ctrl = 0x20;
1155 tab->fe[tab->index].prop = 0x0;
1156 tab->index++;
1157 }
1158
1159 /* Remove last AND */
1160 tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1161
1162 /* Specify which queue to use or to drop */
1163 if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1164 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1165 else
1166 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1167
1168 /* Only big enough entries can be clustered */
1169 if (tab->index > (old_index + 2)) {
1170 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1171 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1172 }
1173
1174 /* In rare cases the cache can be full while there is
1175 * free space in hw
1176 */
1177 if (tab->index > MAX_FILER_CACHE_IDX - 1)
1178 return -EBUSY;
1179
1180 return 0;
1181 }
1182
1183 /* Write the bit-pattern from software's buffer to hardware registers */
gfar_write_filer_table(struct gfar_private * priv,struct filer_table * tab)1184 static int gfar_write_filer_table(struct gfar_private *priv,
1185 struct filer_table *tab)
1186 {
1187 u32 i = 0;
1188 if (tab->index > MAX_FILER_IDX - 1)
1189 return -EBUSY;
1190
1191 /* Fill regular entries */
1192 for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
1193 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1194 /* Fill the rest with fall-troughs */
1195 for (; i < MAX_FILER_IDX; i++)
1196 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1197 /* Last entry must be default accept
1198 * because that's what people expect
1199 */
1200 gfar_write_filer(priv, i, 0x20, 0x0);
1201
1202 return 0;
1203 }
1204
gfar_check_capability(struct ethtool_rx_flow_spec * flow,struct gfar_private * priv)1205 static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1206 struct gfar_private *priv)
1207 {
1208
1209 if (flow->flow_type & FLOW_EXT) {
1210 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1211 netdev_warn(priv->ndev,
1212 "User-specific data not supported!\n");
1213 if (~flow->m_ext.vlan_etype)
1214 netdev_warn(priv->ndev,
1215 "VLAN-etype not supported!\n");
1216 }
1217 if (flow->flow_type == IP_USER_FLOW)
1218 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1219 netdev_warn(priv->ndev,
1220 "IP-Version differing from IPv4 not supported!\n");
1221
1222 return 0;
1223 }
1224
gfar_process_filer_changes(struct gfar_private * priv)1225 static int gfar_process_filer_changes(struct gfar_private *priv)
1226 {
1227 struct ethtool_flow_spec_container *j;
1228 struct filer_table *tab;
1229 s32 ret = 0;
1230
1231 /* So index is set to zero, too! */
1232 tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1233 if (tab == NULL)
1234 return -ENOMEM;
1235
1236 /* Now convert the existing filer data from flow_spec into
1237 * filer tables binary format
1238 */
1239 list_for_each_entry(j, &priv->rx_list.list, list) {
1240 ret = gfar_convert_to_filer(&j->fs, tab);
1241 if (ret == -EBUSY) {
1242 netdev_err(priv->ndev,
1243 "Rule not added: No free space!\n");
1244 goto end;
1245 }
1246 if (ret == -1) {
1247 netdev_err(priv->ndev,
1248 "Rule not added: Unsupported Flow-type!\n");
1249 goto end;
1250 }
1251 }
1252
1253 /* Write everything to hardware */
1254 ret = gfar_write_filer_table(priv, tab);
1255 if (ret == -EBUSY) {
1256 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1257 goto end;
1258 }
1259
1260 end:
1261 kfree(tab);
1262 return ret;
1263 }
1264
gfar_invert_masks(struct ethtool_rx_flow_spec * flow)1265 static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1266 {
1267 u32 i = 0;
1268
1269 for (i = 0; i < sizeof(flow->m_u); i++)
1270 flow->m_u.hdata[i] ^= 0xFF;
1271
1272 flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1273 flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1274 flow->m_ext.data[0] ^= cpu_to_be32(~0);
1275 flow->m_ext.data[1] ^= cpu_to_be32(~0);
1276 }
1277
gfar_add_cls(struct gfar_private * priv,struct ethtool_rx_flow_spec * flow)1278 static int gfar_add_cls(struct gfar_private *priv,
1279 struct ethtool_rx_flow_spec *flow)
1280 {
1281 struct ethtool_flow_spec_container *temp, *comp;
1282 int ret = 0;
1283
1284 temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1285 if (temp == NULL)
1286 return -ENOMEM;
1287 memcpy(&temp->fs, flow, sizeof(temp->fs));
1288
1289 gfar_invert_masks(&temp->fs);
1290 ret = gfar_check_capability(&temp->fs, priv);
1291 if (ret)
1292 goto clean_mem;
1293 /* Link in the new element at the right @location */
1294 if (list_empty(&priv->rx_list.list)) {
1295 ret = gfar_check_filer_hardware(priv);
1296 if (ret != 0)
1297 goto clean_mem;
1298 list_add(&temp->list, &priv->rx_list.list);
1299 goto process;
1300 } else {
1301 list_for_each_entry(comp, &priv->rx_list.list, list) {
1302 if (comp->fs.location > flow->location) {
1303 list_add_tail(&temp->list, &comp->list);
1304 goto process;
1305 }
1306 if (comp->fs.location == flow->location) {
1307 netdev_err(priv->ndev,
1308 "Rule not added: ID %d not free!\n",
1309 flow->location);
1310 ret = -EBUSY;
1311 goto clean_mem;
1312 }
1313 }
1314 list_add_tail(&temp->list, &priv->rx_list.list);
1315 }
1316
1317 process:
1318 priv->rx_list.count++;
1319 ret = gfar_process_filer_changes(priv);
1320 if (ret)
1321 goto clean_list;
1322 return ret;
1323
1324 clean_list:
1325 priv->rx_list.count--;
1326 list_del(&temp->list);
1327 clean_mem:
1328 kfree(temp);
1329 return ret;
1330 }
1331
gfar_del_cls(struct gfar_private * priv,u32 loc)1332 static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1333 {
1334 struct ethtool_flow_spec_container *comp;
1335 u32 ret = -EINVAL;
1336
1337 if (list_empty(&priv->rx_list.list))
1338 return ret;
1339
1340 list_for_each_entry(comp, &priv->rx_list.list, list) {
1341 if (comp->fs.location == loc) {
1342 list_del(&comp->list);
1343 kfree(comp);
1344 priv->rx_list.count--;
1345 gfar_process_filer_changes(priv);
1346 ret = 0;
1347 break;
1348 }
1349 }
1350
1351 return ret;
1352 }
1353
gfar_get_cls(struct gfar_private * priv,struct ethtool_rxnfc * cmd)1354 static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1355 {
1356 struct ethtool_flow_spec_container *comp;
1357 u32 ret = -EINVAL;
1358
1359 list_for_each_entry(comp, &priv->rx_list.list, list) {
1360 if (comp->fs.location == cmd->fs.location) {
1361 memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1362 gfar_invert_masks(&cmd->fs);
1363 ret = 0;
1364 break;
1365 }
1366 }
1367
1368 return ret;
1369 }
1370
gfar_get_cls_all(struct gfar_private * priv,struct ethtool_rxnfc * cmd,u32 * rule_locs)1371 static int gfar_get_cls_all(struct gfar_private *priv,
1372 struct ethtool_rxnfc *cmd, u32 *rule_locs)
1373 {
1374 struct ethtool_flow_spec_container *comp;
1375 u32 i = 0;
1376
1377 list_for_each_entry(comp, &priv->rx_list.list, list) {
1378 if (i == cmd->rule_cnt)
1379 return -EMSGSIZE;
1380 rule_locs[i] = comp->fs.location;
1381 i++;
1382 }
1383
1384 cmd->data = MAX_FILER_IDX;
1385 cmd->rule_cnt = i;
1386
1387 return 0;
1388 }
1389
gfar_set_nfc(struct net_device * dev,struct ethtool_rxnfc * cmd)1390 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1391 {
1392 struct gfar_private *priv = netdev_priv(dev);
1393 int ret = 0;
1394
1395 if (test_bit(GFAR_RESETTING, &priv->state))
1396 return -EBUSY;
1397
1398 mutex_lock(&priv->rx_queue_access);
1399
1400 switch (cmd->cmd) {
1401 case ETHTOOL_SRXFH:
1402 ret = gfar_set_hash_opts(priv, cmd);
1403 break;
1404 case ETHTOOL_SRXCLSRLINS:
1405 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1406 cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1407 cmd->fs.location >= MAX_FILER_IDX) {
1408 ret = -EINVAL;
1409 break;
1410 }
1411 ret = gfar_add_cls(priv, &cmd->fs);
1412 break;
1413 case ETHTOOL_SRXCLSRLDEL:
1414 ret = gfar_del_cls(priv, cmd->fs.location);
1415 break;
1416 default:
1417 ret = -EINVAL;
1418 }
1419
1420 mutex_unlock(&priv->rx_queue_access);
1421
1422 return ret;
1423 }
1424
gfar_get_nfc(struct net_device * dev,struct ethtool_rxnfc * cmd,u32 * rule_locs)1425 static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1426 u32 *rule_locs)
1427 {
1428 struct gfar_private *priv = netdev_priv(dev);
1429 int ret = 0;
1430
1431 switch (cmd->cmd) {
1432 case ETHTOOL_GRXRINGS:
1433 cmd->data = priv->num_rx_queues;
1434 break;
1435 case ETHTOOL_GRXCLSRLCNT:
1436 cmd->rule_cnt = priv->rx_list.count;
1437 break;
1438 case ETHTOOL_GRXCLSRULE:
1439 ret = gfar_get_cls(priv, cmd);
1440 break;
1441 case ETHTOOL_GRXCLSRLALL:
1442 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1443 break;
1444 default:
1445 ret = -EINVAL;
1446 break;
1447 }
1448
1449 return ret;
1450 }
1451
gfar_get_ts_info(struct net_device * dev,struct kernel_ethtool_ts_info * info)1452 static int gfar_get_ts_info(struct net_device *dev,
1453 struct kernel_ethtool_ts_info *info)
1454 {
1455 struct gfar_private *priv = netdev_priv(dev);
1456 struct platform_device *ptp_dev;
1457 struct device_node *ptp_node;
1458 struct ptp_qoriq *ptp = NULL;
1459
1460 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1461 info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE;
1462 return 0;
1463 }
1464
1465 ptp_node = of_find_compatible_node(NULL, NULL, "fsl,etsec-ptp");
1466 if (ptp_node) {
1467 ptp_dev = of_find_device_by_node(ptp_node);
1468 of_node_put(ptp_node);
1469 if (ptp_dev)
1470 ptp = platform_get_drvdata(ptp_dev);
1471 }
1472
1473 if (ptp)
1474 info->phc_index = ptp->phc_index;
1475
1476 info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1477 SOF_TIMESTAMPING_RX_HARDWARE |
1478 SOF_TIMESTAMPING_RAW_HARDWARE |
1479 SOF_TIMESTAMPING_TX_SOFTWARE;
1480 info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1481 (1 << HWTSTAMP_TX_ON);
1482 info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1483 (1 << HWTSTAMP_FILTER_ALL);
1484 return 0;
1485 }
1486
1487 const struct ethtool_ops gfar_ethtool_ops = {
1488 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1489 ETHTOOL_COALESCE_MAX_FRAMES,
1490 .get_drvinfo = gfar_gdrvinfo,
1491 .get_regs_len = gfar_reglen,
1492 .get_regs = gfar_get_regs,
1493 .get_link = ethtool_op_get_link,
1494 .get_coalesce = gfar_gcoalesce,
1495 .set_coalesce = gfar_scoalesce,
1496 .get_ringparam = gfar_gringparam,
1497 .set_ringparam = gfar_sringparam,
1498 .get_pauseparam = gfar_gpauseparam,
1499 .set_pauseparam = gfar_spauseparam,
1500 .get_strings = gfar_gstrings,
1501 .get_sset_count = gfar_sset_count,
1502 .get_ethtool_stats = gfar_fill_stats,
1503 .get_msglevel = gfar_get_msglevel,
1504 .set_msglevel = gfar_set_msglevel,
1505 #ifdef CONFIG_PM
1506 .get_wol = gfar_get_wol,
1507 .set_wol = gfar_set_wol,
1508 #endif
1509 .set_rxnfc = gfar_set_nfc,
1510 .get_rxnfc = gfar_get_nfc,
1511 .get_ts_info = gfar_get_ts_info,
1512 .get_link_ksettings = phy_ethtool_get_link_ksettings,
1513 .set_link_ksettings = phy_ethtool_set_link_ksettings,
1514 };
1515