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Merge branch 'topic/midi20' into for-linus
[linux-block.git] / drivers / net / ethernet / freescale / gianfar_ethtool.c
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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * drivers/net/ethernet/freescale/gianfar_ethtool.c
4 *
5 * Gianfar Ethernet Driver
6 * Ethtool support for Gianfar Enet
7 * Based on e1000 ethtool support
8 *
9 * Author: Andy Fleming
10 * Maintainer: Kumar Gala
11 * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
12 *
13 * Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc.
14 */
15
16#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
17
18#include <linux/kernel.h>
19#include <linux/string.h>
20#include <linux/errno.h>
21#include <linux/interrupt.h>
22#include <linux/delay.h>
23#include <linux/netdevice.h>
24#include <linux/etherdevice.h>
25#include <linux/net_tstamp.h>
26#include <linux/skbuff.h>
27#include <linux/spinlock.h>
28#include <linux/mm.h>
29
30#include <asm/io.h>
31#include <asm/irq.h>
32#include <linux/uaccess.h>
33#include <linux/module.h>
34#include <linux/crc32.h>
35#include <asm/types.h>
36#include <linux/ethtool.h>
37#include <linux/mii.h>
38#include <linux/phy.h>
39#include <linux/sort.h>
40#include <linux/if_vlan.h>
41#include <linux/of_platform.h>
42#include <linux/fsl/ptp_qoriq.h>
43
44#include "gianfar.h"
45
46#define GFAR_MAX_COAL_USECS 0xffff
47#define GFAR_MAX_COAL_FRAMES 0xff
48
49static const char stat_gstrings[][ETH_GSTRING_LEN] = {
50 /* extra stats */
51 "rx-allocation-errors",
52 "rx-large-frame-errors",
53 "rx-short-frame-errors",
54 "rx-non-octet-errors",
55 "rx-crc-errors",
56 "rx-overrun-errors",
57 "rx-busy-errors",
58 "rx-babbling-errors",
59 "rx-truncated-frames",
60 "ethernet-bus-error",
61 "tx-babbling-errors",
62 "tx-underrun-errors",
63 "tx-timeout-errors",
64 /* rmon stats */
65 "tx-rx-64-frames",
66 "tx-rx-65-127-frames",
67 "tx-rx-128-255-frames",
68 "tx-rx-256-511-frames",
69 "tx-rx-512-1023-frames",
70 "tx-rx-1024-1518-frames",
71 "tx-rx-1519-1522-good-vlan",
72 "rx-bytes",
73 "rx-packets",
74 "rx-fcs-errors",
75 "receive-multicast-packet",
76 "receive-broadcast-packet",
77 "rx-control-frame-packets",
78 "rx-pause-frame-packets",
79 "rx-unknown-op-code",
80 "rx-alignment-error",
81 "rx-frame-length-error",
82 "rx-code-error",
83 "rx-carrier-sense-error",
84 "rx-undersize-packets",
85 "rx-oversize-packets",
86 "rx-fragmented-frames",
87 "rx-jabber-frames",
88 "rx-dropped-frames",
89 "tx-byte-counter",
90 "tx-packets",
91 "tx-multicast-packets",
92 "tx-broadcast-packets",
93 "tx-pause-control-frames",
94 "tx-deferral-packets",
95 "tx-excessive-deferral-packets",
96 "tx-single-collision-packets",
97 "tx-multiple-collision-packets",
98 "tx-late-collision-packets",
99 "tx-excessive-collision-packets",
100 "tx-total-collision",
101 "reserved",
102 "tx-dropped-frames",
103 "tx-jabber-frames",
104 "tx-fcs-errors",
105 "tx-control-frames",
106 "tx-oversize-frames",
107 "tx-undersize-frames",
108 "tx-fragmented-frames",
109};
110
111/* Fill in a buffer with the strings which correspond to the
112 * stats */
113static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
114{
115 struct gfar_private *priv = netdev_priv(dev);
116
117 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
118 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
119 else
120 memcpy(buf, stat_gstrings,
121 GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
122}
123
124/* Fill in an array of 64-bit statistics from various sources.
125 * This array will be appended to the end of the ethtool_stats
126 * structure, and returned to user space
127 */
128static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
129 u64 *buf)
130{
131 int i;
132 struct gfar_private *priv = netdev_priv(dev);
133 struct gfar __iomem *regs = priv->gfargrp[0].regs;
134 atomic64_t *extra = (atomic64_t *)&priv->extra_stats;
135
136 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
137 buf[i] = atomic64_read(&extra[i]);
138
139 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
140 u32 __iomem *rmon = (u32 __iomem *) &regs->rmon;
141
142 for (; i < GFAR_STATS_LEN; i++, rmon++)
143 buf[i] = (u64) gfar_read(rmon);
144 }
145}
146
147static int gfar_sset_count(struct net_device *dev, int sset)
148{
149 struct gfar_private *priv = netdev_priv(dev);
150
151 switch (sset) {
152 case ETH_SS_STATS:
153 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
154 return GFAR_STATS_LEN;
155 else
156 return GFAR_EXTRA_STATS_LEN;
157 default:
158 return -EOPNOTSUPP;
159 }
160}
161
162/* Fills in the drvinfo structure with some basic info */
163static void gfar_gdrvinfo(struct net_device *dev,
164 struct ethtool_drvinfo *drvinfo)
165{
166 strscpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
167}
168
169/* Return the length of the register structure */
170static int gfar_reglen(struct net_device *dev)
171{
172 return sizeof (struct gfar);
173}
174
175/* Return a dump of the GFAR register space */
176static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
177 void *regbuf)
178{
179 int i;
180 struct gfar_private *priv = netdev_priv(dev);
181 u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
182 u32 *buf = (u32 *) regbuf;
183
184 for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
185 buf[i] = gfar_read(&theregs[i]);
186}
187
188/* Convert microseconds to ethernet clock ticks, which changes
189 * depending on what speed the controller is running at */
190static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
191 unsigned int usecs)
192{
193 struct net_device *ndev = priv->ndev;
194 struct phy_device *phydev = ndev->phydev;
195 unsigned int count;
196
197 /* The timer is different, depending on the interface speed */
198 switch (phydev->speed) {
199 case SPEED_1000:
200 count = GFAR_GBIT_TIME;
201 break;
202 case SPEED_100:
203 count = GFAR_100_TIME;
204 break;
205 case SPEED_10:
206 default:
207 count = GFAR_10_TIME;
208 break;
209 }
210
211 /* Make sure we return a number greater than 0
212 * if usecs > 0 */
213 return DIV_ROUND_UP(usecs * 1000, count);
214}
215
216/* Convert ethernet clock ticks to microseconds */
217static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
218 unsigned int ticks)
219{
220 struct net_device *ndev = priv->ndev;
221 struct phy_device *phydev = ndev->phydev;
222 unsigned int count;
223
224 /* The timer is different, depending on the interface speed */
225 switch (phydev->speed) {
226 case SPEED_1000:
227 count = GFAR_GBIT_TIME;
228 break;
229 case SPEED_100:
230 count = GFAR_100_TIME;
231 break;
232 case SPEED_10:
233 default:
234 count = GFAR_10_TIME;
235 break;
236 }
237
238 /* Make sure we return a number greater than 0 */
239 /* if ticks is > 0 */
240 return (ticks * count) / 1000;
241}
242
243/* Get the coalescing parameters, and put them in the cvals
244 * structure. */
245static int gfar_gcoalesce(struct net_device *dev,
246 struct ethtool_coalesce *cvals,
247 struct kernel_ethtool_coalesce *kernel_coal,
248 struct netlink_ext_ack *extack)
249{
250 struct gfar_private *priv = netdev_priv(dev);
251 struct gfar_priv_rx_q *rx_queue = NULL;
252 struct gfar_priv_tx_q *tx_queue = NULL;
253 unsigned long rxtime;
254 unsigned long rxcount;
255 unsigned long txtime;
256 unsigned long txcount;
257
258 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
259 return -EOPNOTSUPP;
260
261 if (!dev->phydev)
262 return -ENODEV;
263
264 rx_queue = priv->rx_queue[0];
265 tx_queue = priv->tx_queue[0];
266
267 rxtime = get_ictt_value(rx_queue->rxic);
268 rxcount = get_icft_value(rx_queue->rxic);
269 txtime = get_ictt_value(tx_queue->txic);
270 txcount = get_icft_value(tx_queue->txic);
271 cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
272 cvals->rx_max_coalesced_frames = rxcount;
273
274 cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
275 cvals->tx_max_coalesced_frames = txcount;
276
277 return 0;
278}
279
280/* Change the coalescing values.
281 * Both cvals->*_usecs and cvals->*_frames have to be > 0
282 * in order for coalescing to be active
283 */
284static int gfar_scoalesce(struct net_device *dev,
285 struct ethtool_coalesce *cvals,
286 struct kernel_ethtool_coalesce *kernel_coal,
287 struct netlink_ext_ack *extack)
288{
289 struct gfar_private *priv = netdev_priv(dev);
290 int i, err = 0;
291
292 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
293 return -EOPNOTSUPP;
294
295 if (!dev->phydev)
296 return -ENODEV;
297
298 /* Check the bounds of the values */
299 if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
300 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
301 GFAR_MAX_COAL_USECS);
302 return -EINVAL;
303 }
304
305 if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
306 netdev_info(dev, "Coalescing is limited to %d frames\n",
307 GFAR_MAX_COAL_FRAMES);
308 return -EINVAL;
309 }
310
311 /* Check the bounds of the values */
312 if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
313 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
314 GFAR_MAX_COAL_USECS);
315 return -EINVAL;
316 }
317
318 if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
319 netdev_info(dev, "Coalescing is limited to %d frames\n",
320 GFAR_MAX_COAL_FRAMES);
321 return -EINVAL;
322 }
323
324 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
325 cpu_relax();
326
327 /* Set up rx coalescing */
328 if ((cvals->rx_coalesce_usecs == 0) ||
329 (cvals->rx_max_coalesced_frames == 0)) {
330 for (i = 0; i < priv->num_rx_queues; i++)
331 priv->rx_queue[i]->rxcoalescing = 0;
332 } else {
333 for (i = 0; i < priv->num_rx_queues; i++)
334 priv->rx_queue[i]->rxcoalescing = 1;
335 }
336
337 for (i = 0; i < priv->num_rx_queues; i++) {
338 priv->rx_queue[i]->rxic = mk_ic_value(
339 cvals->rx_max_coalesced_frames,
340 gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
341 }
342
343 /* Set up tx coalescing */
344 if ((cvals->tx_coalesce_usecs == 0) ||
345 (cvals->tx_max_coalesced_frames == 0)) {
346 for (i = 0; i < priv->num_tx_queues; i++)
347 priv->tx_queue[i]->txcoalescing = 0;
348 } else {
349 for (i = 0; i < priv->num_tx_queues; i++)
350 priv->tx_queue[i]->txcoalescing = 1;
351 }
352
353 for (i = 0; i < priv->num_tx_queues; i++) {
354 priv->tx_queue[i]->txic = mk_ic_value(
355 cvals->tx_max_coalesced_frames,
356 gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
357 }
358
359 if (dev->flags & IFF_UP) {
360 stop_gfar(dev);
361 err = startup_gfar(dev);
362 } else {
363 gfar_mac_reset(priv);
364 }
365
366 clear_bit_unlock(GFAR_RESETTING, &priv->state);
367
368 return err;
369}
370
371/* Fills in rvals with the current ring parameters. Currently,
372 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
373 * jumbo are ignored by the driver */
374static void gfar_gringparam(struct net_device *dev,
375 struct ethtool_ringparam *rvals,
376 struct kernel_ethtool_ringparam *kernel_rvals,
377 struct netlink_ext_ack *extack)
378{
379 struct gfar_private *priv = netdev_priv(dev);
380 struct gfar_priv_tx_q *tx_queue = NULL;
381 struct gfar_priv_rx_q *rx_queue = NULL;
382
383 tx_queue = priv->tx_queue[0];
384 rx_queue = priv->rx_queue[0];
385
386 rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
387 rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
388 rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
389 rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
390
391 /* Values changeable by the user. The valid values are
392 * in the range 1 to the "*_max_pending" counterpart above.
393 */
394 rvals->rx_pending = rx_queue->rx_ring_size;
395 rvals->rx_mini_pending = rx_queue->rx_ring_size;
396 rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
397 rvals->tx_pending = tx_queue->tx_ring_size;
398}
399
400/* Change the current ring parameters, stopping the controller if
401 * necessary so that we don't mess things up while we're in motion.
402 */
403static int gfar_sringparam(struct net_device *dev,
404 struct ethtool_ringparam *rvals,
405 struct kernel_ethtool_ringparam *kernel_rvals,
406 struct netlink_ext_ack *extack)
407{
408 struct gfar_private *priv = netdev_priv(dev);
409 int err = 0, i;
410
411 if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
412 return -EINVAL;
413
414 if (!is_power_of_2(rvals->rx_pending)) {
415 netdev_err(dev, "Ring sizes must be a power of 2\n");
416 return -EINVAL;
417 }
418
419 if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
420 return -EINVAL;
421
422 if (!is_power_of_2(rvals->tx_pending)) {
423 netdev_err(dev, "Ring sizes must be a power of 2\n");
424 return -EINVAL;
425 }
426
427 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
428 cpu_relax();
429
430 if (dev->flags & IFF_UP)
431 stop_gfar(dev);
432
433 /* Change the sizes */
434 for (i = 0; i < priv->num_rx_queues; i++)
435 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
436
437 for (i = 0; i < priv->num_tx_queues; i++)
438 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
439
440 /* Rebuild the rings with the new size */
441 if (dev->flags & IFF_UP)
442 err = startup_gfar(dev);
443
444 clear_bit_unlock(GFAR_RESETTING, &priv->state);
445
446 return err;
447}
448
449static void gfar_gpauseparam(struct net_device *dev,
450 struct ethtool_pauseparam *epause)
451{
452 struct gfar_private *priv = netdev_priv(dev);
453
454 epause->autoneg = !!priv->pause_aneg_en;
455 epause->rx_pause = !!priv->rx_pause_en;
456 epause->tx_pause = !!priv->tx_pause_en;
457}
458
459static int gfar_spauseparam(struct net_device *dev,
460 struct ethtool_pauseparam *epause)
461{
462 struct gfar_private *priv = netdev_priv(dev);
463 struct phy_device *phydev = dev->phydev;
464 struct gfar __iomem *regs = priv->gfargrp[0].regs;
465
466 if (!phydev)
467 return -ENODEV;
468
469 if (!phy_validate_pause(phydev, epause))
470 return -EINVAL;
471
472 priv->rx_pause_en = priv->tx_pause_en = 0;
473 phy_set_asym_pause(phydev, epause->rx_pause, epause->tx_pause);
474 if (epause->rx_pause) {
475 priv->rx_pause_en = 1;
476
477 if (epause->tx_pause) {
478 priv->tx_pause_en = 1;
479 }
480 } else if (epause->tx_pause) {
481 priv->tx_pause_en = 1;
482 }
483
484 if (epause->autoneg)
485 priv->pause_aneg_en = 1;
486 else
487 priv->pause_aneg_en = 0;
488
489 if (!epause->autoneg) {
490 u32 tempval = gfar_read(&regs->maccfg1);
491
492 tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
493
494 priv->tx_actual_en = 0;
495 if (priv->tx_pause_en) {
496 priv->tx_actual_en = 1;
497 tempval |= MACCFG1_TX_FLOW;
498 }
499
500 if (priv->rx_pause_en)
501 tempval |= MACCFG1_RX_FLOW;
502 gfar_write(&regs->maccfg1, tempval);
503 }
504
505 return 0;
506}
507
508int gfar_set_features(struct net_device *dev, netdev_features_t features)
509{
510 netdev_features_t changed = dev->features ^ features;
511 struct gfar_private *priv = netdev_priv(dev);
512 int err = 0;
513
514 if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
515 NETIF_F_RXCSUM)))
516 return 0;
517
518 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
519 cpu_relax();
520
521 dev->features = features;
522
523 if (dev->flags & IFF_UP) {
524 /* Now we take down the rings to rebuild them */
525 stop_gfar(dev);
526 err = startup_gfar(dev);
527 } else {
528 gfar_mac_reset(priv);
529 }
530
531 clear_bit_unlock(GFAR_RESETTING, &priv->state);
532
533 return err;
534}
535
536static uint32_t gfar_get_msglevel(struct net_device *dev)
537{
538 struct gfar_private *priv = netdev_priv(dev);
539
540 return priv->msg_enable;
541}
542
543static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
544{
545 struct gfar_private *priv = netdev_priv(dev);
546
547 priv->msg_enable = data;
548}
549
550#ifdef CONFIG_PM
551static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
552{
553 struct gfar_private *priv = netdev_priv(dev);
554
555 wol->supported = 0;
556 wol->wolopts = 0;
557
558 if (priv->wol_supported & GFAR_WOL_MAGIC)
559 wol->supported |= WAKE_MAGIC;
560
561 if (priv->wol_supported & GFAR_WOL_FILER_UCAST)
562 wol->supported |= WAKE_UCAST;
563
564 if (priv->wol_opts & GFAR_WOL_MAGIC)
565 wol->wolopts |= WAKE_MAGIC;
566
567 if (priv->wol_opts & GFAR_WOL_FILER_UCAST)
568 wol->wolopts |= WAKE_UCAST;
569}
570
571static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
572{
573 struct gfar_private *priv = netdev_priv(dev);
574 u16 wol_opts = 0;
575 int err;
576
577 if (!priv->wol_supported && wol->wolopts)
578 return -EINVAL;
579
580 if (wol->wolopts & ~(WAKE_MAGIC | WAKE_UCAST))
581 return -EINVAL;
582
583 if (wol->wolopts & WAKE_MAGIC) {
584 wol_opts |= GFAR_WOL_MAGIC;
585 } else {
586 if (wol->wolopts & WAKE_UCAST)
587 wol_opts |= GFAR_WOL_FILER_UCAST;
588 }
589
590 wol_opts &= priv->wol_supported;
591 priv->wol_opts = 0;
592
593 err = device_set_wakeup_enable(priv->dev, wol_opts);
594 if (err)
595 return err;
596
597 priv->wol_opts = wol_opts;
598
599 return 0;
600}
601#endif
602
603static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
604{
605 u32 fcr = 0x0, fpr = FPR_FILER_MASK;
606
607 if (ethflow & RXH_L2DA) {
608 fcr = RQFCR_PID_DAH | RQFCR_CMP_NOMATCH |
609 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
610 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
611 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
612 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
613 priv->cur_filer_idx = priv->cur_filer_idx - 1;
614
615 fcr = RQFCR_PID_DAL | RQFCR_CMP_NOMATCH |
616 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
617 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
618 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
619 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
620 priv->cur_filer_idx = priv->cur_filer_idx - 1;
621 }
622
623 if (ethflow & RXH_VLAN) {
624 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
625 RQFCR_AND | RQFCR_HASHTBL_0;
626 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
627 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
628 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
629 priv->cur_filer_idx = priv->cur_filer_idx - 1;
630 }
631
632 if (ethflow & RXH_IP_SRC) {
633 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
634 RQFCR_AND | RQFCR_HASHTBL_0;
635 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
636 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
637 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
638 priv->cur_filer_idx = priv->cur_filer_idx - 1;
639 }
640
641 if (ethflow & (RXH_IP_DST)) {
642 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
643 RQFCR_AND | RQFCR_HASHTBL_0;
644 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
645 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
646 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
647 priv->cur_filer_idx = priv->cur_filer_idx - 1;
648 }
649
650 if (ethflow & RXH_L3_PROTO) {
651 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
652 RQFCR_AND | RQFCR_HASHTBL_0;
653 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
654 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
655 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
656 priv->cur_filer_idx = priv->cur_filer_idx - 1;
657 }
658
659 if (ethflow & RXH_L4_B_0_1) {
660 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
661 RQFCR_AND | RQFCR_HASHTBL_0;
662 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
663 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
664 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
665 priv->cur_filer_idx = priv->cur_filer_idx - 1;
666 }
667
668 if (ethflow & RXH_L4_B_2_3) {
669 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
670 RQFCR_AND | RQFCR_HASHTBL_0;
671 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
672 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
673 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
674 priv->cur_filer_idx = priv->cur_filer_idx - 1;
675 }
676}
677
678static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
679 u64 class)
680{
681 unsigned int cmp_rqfpr;
682 unsigned int *local_rqfpr;
683 unsigned int *local_rqfcr;
684 int i = 0x0, k = 0x0;
685 int j = MAX_FILER_IDX, l = 0x0;
686 int ret = 1;
687
688 local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
689 GFP_KERNEL);
690 local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
691 GFP_KERNEL);
692 if (!local_rqfpr || !local_rqfcr) {
693 ret = 0;
694 goto err;
695 }
696
697 switch (class) {
698 case TCP_V4_FLOW:
699 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
700 break;
701 case UDP_V4_FLOW:
702 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
703 break;
704 case TCP_V6_FLOW:
705 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
706 break;
707 case UDP_V6_FLOW:
708 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
709 break;
710 default:
711 netdev_err(priv->ndev,
712 "Right now this class is not supported\n");
713 ret = 0;
714 goto err;
715 }
716
717 for (i = 0; i < MAX_FILER_IDX + 1; i++) {
718 local_rqfpr[j] = priv->ftp_rqfpr[i];
719 local_rqfcr[j] = priv->ftp_rqfcr[i];
720 j--;
721 if ((priv->ftp_rqfcr[i] ==
722 (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
723 (priv->ftp_rqfpr[i] == cmp_rqfpr))
724 break;
725 }
726
727 if (i == MAX_FILER_IDX + 1) {
728 netdev_err(priv->ndev,
729 "No parse rule found, can't create hash rules\n");
730 ret = 0;
731 goto err;
732 }
733
734 /* If a match was found, then it begins the starting of a cluster rule
735 * if it was already programmed, we need to overwrite these rules
736 */
737 for (l = i+1; l < MAX_FILER_IDX; l++) {
738 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
739 !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
740 priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
741 RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
742 priv->ftp_rqfpr[l] = FPR_FILER_MASK;
743 gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
744 priv->ftp_rqfpr[l]);
745 break;
746 }
747
748 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
749 (priv->ftp_rqfcr[l] & RQFCR_AND))
750 continue;
751 else {
752 local_rqfpr[j] = priv->ftp_rqfpr[l];
753 local_rqfcr[j] = priv->ftp_rqfcr[l];
754 j--;
755 }
756 }
757
758 priv->cur_filer_idx = l - 1;
759
760 /* hash rules */
761 ethflow_to_filer_rules(priv, ethflow);
762
763 /* Write back the popped out rules again */
764 for (k = j+1; k < MAX_FILER_IDX; k++) {
765 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
766 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
767 gfar_write_filer(priv, priv->cur_filer_idx,
768 local_rqfcr[k], local_rqfpr[k]);
769 if (!priv->cur_filer_idx)
770 break;
771 priv->cur_filer_idx = priv->cur_filer_idx - 1;
772 }
773
774err:
775 kfree(local_rqfcr);
776 kfree(local_rqfpr);
777 return ret;
778}
779
780static int gfar_set_hash_opts(struct gfar_private *priv,
781 struct ethtool_rxnfc *cmd)
782{
783 /* write the filer rules here */
784 if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
785 return -EINVAL;
786
787 return 0;
788}
789
790static int gfar_check_filer_hardware(struct gfar_private *priv)
791{
792 struct gfar __iomem *regs = priv->gfargrp[0].regs;
793 u32 i;
794
795 /* Check if we are in FIFO mode */
796 i = gfar_read(&regs->ecntrl);
797 i &= ECNTRL_FIFM;
798 if (i == ECNTRL_FIFM) {
799 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
800 i = gfar_read(&regs->rctrl);
801 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
802 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
803 netdev_info(priv->ndev,
804 "Receive Queue Filtering enabled\n");
805 } else {
806 netdev_warn(priv->ndev,
807 "Receive Queue Filtering disabled\n");
808 return -EOPNOTSUPP;
809 }
810 }
811 /* Or in standard mode */
812 else {
813 i = gfar_read(&regs->rctrl);
814 i &= RCTRL_PRSDEP_MASK;
815 if (i == RCTRL_PRSDEP_MASK) {
816 netdev_info(priv->ndev,
817 "Receive Queue Filtering enabled\n");
818 } else {
819 netdev_warn(priv->ndev,
820 "Receive Queue Filtering disabled\n");
821 return -EOPNOTSUPP;
822 }
823 }
824
825 /* Sets the properties for arbitrary filer rule
826 * to the first 4 Layer 4 Bytes
827 */
828 gfar_write(&regs->rbifx, 0xC0C1C2C3);
829 return 0;
830}
831
832/* Write a mask to filer cache */
833static void gfar_set_mask(u32 mask, struct filer_table *tab)
834{
835 tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
836 tab->fe[tab->index].prop = mask;
837 tab->index++;
838}
839
840/* Sets parse bits (e.g. IP or TCP) */
841static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
842{
843 gfar_set_mask(mask, tab);
844 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
845 RQFCR_AND;
846 tab->fe[tab->index].prop = value;
847 tab->index++;
848}
849
850static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
851 struct filer_table *tab)
852{
853 gfar_set_mask(mask, tab);
854 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
855 tab->fe[tab->index].prop = value;
856 tab->index++;
857}
858
859/* For setting a tuple of value and mask of type flag
860 * Example:
861 * IP-Src = 10.0.0.0/255.0.0.0
862 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
863 *
864 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
865 * For a don't care mask it gives us a 0
866 *
867 * The check if don't care and the mask adjustment if mask=0 is done for VLAN
868 * and MAC stuff on an upper level (due to missing information on this level).
869 * For these guys we can discard them if they are value=0 and mask=0.
870 *
871 * Further the all masks are one-padded for better hardware efficiency.
872 */
873static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
874 struct filer_table *tab)
875{
876 switch (flag) {
877 /* 3bit */
878 case RQFCR_PID_PRI:
879 if (!(value | mask))
880 return;
881 mask |= RQFCR_PID_PRI_MASK;
882 break;
883 /* 8bit */
884 case RQFCR_PID_L4P:
885 case RQFCR_PID_TOS:
886 if (!~(mask | RQFCR_PID_L4P_MASK))
887 return;
888 if (!mask)
889 mask = ~0;
890 else
891 mask |= RQFCR_PID_L4P_MASK;
892 break;
893 /* 12bit */
894 case RQFCR_PID_VID:
895 if (!(value | mask))
896 return;
897 mask |= RQFCR_PID_VID_MASK;
898 break;
899 /* 16bit */
900 case RQFCR_PID_DPT:
901 case RQFCR_PID_SPT:
902 case RQFCR_PID_ETY:
903 if (!~(mask | RQFCR_PID_PORT_MASK))
904 return;
905 if (!mask)
906 mask = ~0;
907 else
908 mask |= RQFCR_PID_PORT_MASK;
909 break;
910 /* 24bit */
911 case RQFCR_PID_DAH:
912 case RQFCR_PID_DAL:
913 case RQFCR_PID_SAH:
914 case RQFCR_PID_SAL:
915 if (!(value | mask))
916 return;
917 mask |= RQFCR_PID_MAC_MASK;
918 break;
919 /* for all real 32bit masks */
920 default:
921 if (!~mask)
922 return;
923 if (!mask)
924 mask = ~0;
925 break;
926 }
927 gfar_set_general_attribute(value, mask, flag, tab);
928}
929
930/* Translates value and mask for UDP, TCP or SCTP */
931static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
932 struct ethtool_tcpip4_spec *mask,
933 struct filer_table *tab)
934{
935 gfar_set_attribute(be32_to_cpu(value->ip4src),
936 be32_to_cpu(mask->ip4src),
937 RQFCR_PID_SIA, tab);
938 gfar_set_attribute(be32_to_cpu(value->ip4dst),
939 be32_to_cpu(mask->ip4dst),
940 RQFCR_PID_DIA, tab);
941 gfar_set_attribute(be16_to_cpu(value->pdst),
942 be16_to_cpu(mask->pdst),
943 RQFCR_PID_DPT, tab);
944 gfar_set_attribute(be16_to_cpu(value->psrc),
945 be16_to_cpu(mask->psrc),
946 RQFCR_PID_SPT, tab);
947 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
948}
949
950/* Translates value and mask for RAW-IP4 */
951static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
952 struct ethtool_usrip4_spec *mask,
953 struct filer_table *tab)
954{
955 gfar_set_attribute(be32_to_cpu(value->ip4src),
956 be32_to_cpu(mask->ip4src),
957 RQFCR_PID_SIA, tab);
958 gfar_set_attribute(be32_to_cpu(value->ip4dst),
959 be32_to_cpu(mask->ip4dst),
960 RQFCR_PID_DIA, tab);
961 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
962 gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
963 gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
964 be32_to_cpu(mask->l4_4_bytes),
965 RQFCR_PID_ARB, tab);
966
967}
968
969/* Translates value and mask for ETHER spec */
970static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
971 struct filer_table *tab)
972{
973 u32 upper_temp_mask = 0;
974 u32 lower_temp_mask = 0;
975
976 /* Source address */
977 if (!is_broadcast_ether_addr(mask->h_source)) {
978 if (is_zero_ether_addr(mask->h_source)) {
979 upper_temp_mask = 0xFFFFFFFF;
980 lower_temp_mask = 0xFFFFFFFF;
981 } else {
982 upper_temp_mask = mask->h_source[0] << 16 |
983 mask->h_source[1] << 8 |
984 mask->h_source[2];
985 lower_temp_mask = mask->h_source[3] << 16 |
986 mask->h_source[4] << 8 |
987 mask->h_source[5];
988 }
989 /* Upper 24bit */
990 gfar_set_attribute(value->h_source[0] << 16 |
991 value->h_source[1] << 8 |
992 value->h_source[2],
993 upper_temp_mask, RQFCR_PID_SAH, tab);
994 /* And the same for the lower part */
995 gfar_set_attribute(value->h_source[3] << 16 |
996 value->h_source[4] << 8 |
997 value->h_source[5],
998 lower_temp_mask, RQFCR_PID_SAL, tab);
999 }
1000 /* Destination address */
1001 if (!is_broadcast_ether_addr(mask->h_dest)) {
1002 /* Special for destination is limited broadcast */
1003 if ((is_broadcast_ether_addr(value->h_dest) &&
1004 is_zero_ether_addr(mask->h_dest))) {
1005 gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1006 } else {
1007 if (is_zero_ether_addr(mask->h_dest)) {
1008 upper_temp_mask = 0xFFFFFFFF;
1009 lower_temp_mask = 0xFFFFFFFF;
1010 } else {
1011 upper_temp_mask = mask->h_dest[0] << 16 |
1012 mask->h_dest[1] << 8 |
1013 mask->h_dest[2];
1014 lower_temp_mask = mask->h_dest[3] << 16 |
1015 mask->h_dest[4] << 8 |
1016 mask->h_dest[5];
1017 }
1018
1019 /* Upper 24bit */
1020 gfar_set_attribute(value->h_dest[0] << 16 |
1021 value->h_dest[1] << 8 |
1022 value->h_dest[2],
1023 upper_temp_mask, RQFCR_PID_DAH, tab);
1024 /* And the same for the lower part */
1025 gfar_set_attribute(value->h_dest[3] << 16 |
1026 value->h_dest[4] << 8 |
1027 value->h_dest[5],
1028 lower_temp_mask, RQFCR_PID_DAL, tab);
1029 }
1030 }
1031
1032 gfar_set_attribute(be16_to_cpu(value->h_proto),
1033 be16_to_cpu(mask->h_proto),
1034 RQFCR_PID_ETY, tab);
1035}
1036
1037static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1038{
1039 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1040}
1041
1042static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1043{
1044 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1045}
1046
1047static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1048{
1049 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1050}
1051
1052static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1053{
1054 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1055}
1056
1057static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1058{
1059 return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1060 VLAN_PRIO_SHIFT;
1061}
1062
1063static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1064{
1065 return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1066 VLAN_PRIO_SHIFT;
1067}
1068
1069/* Convert a rule to binary filter format of gianfar */
1070static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1071 struct filer_table *tab)
1072{
1073 u32 vlan = 0, vlan_mask = 0;
1074 u32 id = 0, id_mask = 0;
1075 u32 cfi = 0, cfi_mask = 0;
1076 u32 prio = 0, prio_mask = 0;
1077 u32 old_index = tab->index;
1078
1079 /* Check if vlan is wanted */
1080 if ((rule->flow_type & FLOW_EXT) &&
1081 (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1082 if (!rule->m_ext.vlan_tci)
1083 rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1084
1085 vlan = RQFPR_VLN;
1086 vlan_mask = RQFPR_VLN;
1087
1088 /* Separate the fields */
1089 id = vlan_tci_vid(rule);
1090 id_mask = vlan_tci_vidm(rule);
1091 cfi = vlan_tci_cfi(rule);
1092 cfi_mask = vlan_tci_cfim(rule);
1093 prio = vlan_tci_prio(rule);
1094 prio_mask = vlan_tci_priom(rule);
1095
1096 if (cfi_mask) {
1097 if (cfi)
1098 vlan |= RQFPR_CFI;
1099 vlan_mask |= RQFPR_CFI;
1100 }
1101 }
1102
1103 switch (rule->flow_type & ~FLOW_EXT) {
1104 case TCP_V4_FLOW:
1105 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1106 RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1107 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1108 &rule->m_u.tcp_ip4_spec, tab);
1109 break;
1110 case UDP_V4_FLOW:
1111 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1112 RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1113 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1114 &rule->m_u.udp_ip4_spec, tab);
1115 break;
1116 case SCTP_V4_FLOW:
1117 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1118 tab);
1119 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1120 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1121 (struct ethtool_tcpip4_spec *)&rule->m_u,
1122 tab);
1123 break;
1124 case IP_USER_FLOW:
1125 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1126 tab);
1127 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1128 (struct ethtool_usrip4_spec *) &rule->m_u,
1129 tab);
1130 break;
1131 case ETHER_FLOW:
1132 if (vlan)
1133 gfar_set_parse_bits(vlan, vlan_mask, tab);
1134 gfar_set_ether((struct ethhdr *) &rule->h_u,
1135 (struct ethhdr *) &rule->m_u, tab);
1136 break;
1137 default:
1138 return -1;
1139 }
1140
1141 /* Set the vlan attributes in the end */
1142 if (vlan) {
1143 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1144 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1145 }
1146
1147 /* If there has been nothing written till now, it must be a default */
1148 if (tab->index == old_index) {
1149 gfar_set_mask(0xFFFFFFFF, tab);
1150 tab->fe[tab->index].ctrl = 0x20;
1151 tab->fe[tab->index].prop = 0x0;
1152 tab->index++;
1153 }
1154
1155 /* Remove last AND */
1156 tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1157
1158 /* Specify which queue to use or to drop */
1159 if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1160 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1161 else
1162 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1163
1164 /* Only big enough entries can be clustered */
1165 if (tab->index > (old_index + 2)) {
1166 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1167 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1168 }
1169
1170 /* In rare cases the cache can be full while there is
1171 * free space in hw
1172 */
1173 if (tab->index > MAX_FILER_CACHE_IDX - 1)
1174 return -EBUSY;
1175
1176 return 0;
1177}
1178
1179/* Write the bit-pattern from software's buffer to hardware registers */
1180static int gfar_write_filer_table(struct gfar_private *priv,
1181 struct filer_table *tab)
1182{
1183 u32 i = 0;
1184 if (tab->index > MAX_FILER_IDX - 1)
1185 return -EBUSY;
1186
1187 /* Fill regular entries */
1188 for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
1189 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1190 /* Fill the rest with fall-troughs */
1191 for (; i < MAX_FILER_IDX; i++)
1192 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1193 /* Last entry must be default accept
1194 * because that's what people expect
1195 */
1196 gfar_write_filer(priv, i, 0x20, 0x0);
1197
1198 return 0;
1199}
1200
1201static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1202 struct gfar_private *priv)
1203{
1204
1205 if (flow->flow_type & FLOW_EXT) {
1206 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1207 netdev_warn(priv->ndev,
1208 "User-specific data not supported!\n");
1209 if (~flow->m_ext.vlan_etype)
1210 netdev_warn(priv->ndev,
1211 "VLAN-etype not supported!\n");
1212 }
1213 if (flow->flow_type == IP_USER_FLOW)
1214 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1215 netdev_warn(priv->ndev,
1216 "IP-Version differing from IPv4 not supported!\n");
1217
1218 return 0;
1219}
1220
1221static int gfar_process_filer_changes(struct gfar_private *priv)
1222{
1223 struct ethtool_flow_spec_container *j;
1224 struct filer_table *tab;
1225 s32 ret = 0;
1226
1227 /* So index is set to zero, too! */
1228 tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1229 if (tab == NULL)
1230 return -ENOMEM;
1231
1232 /* Now convert the existing filer data from flow_spec into
1233 * filer tables binary format
1234 */
1235 list_for_each_entry(j, &priv->rx_list.list, list) {
1236 ret = gfar_convert_to_filer(&j->fs, tab);
1237 if (ret == -EBUSY) {
1238 netdev_err(priv->ndev,
1239 "Rule not added: No free space!\n");
1240 goto end;
1241 }
1242 if (ret == -1) {
1243 netdev_err(priv->ndev,
1244 "Rule not added: Unsupported Flow-type!\n");
1245 goto end;
1246 }
1247 }
1248
1249 /* Write everything to hardware */
1250 ret = gfar_write_filer_table(priv, tab);
1251 if (ret == -EBUSY) {
1252 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1253 goto end;
1254 }
1255
1256end:
1257 kfree(tab);
1258 return ret;
1259}
1260
1261static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1262{
1263 u32 i = 0;
1264
1265 for (i = 0; i < sizeof(flow->m_u); i++)
1266 flow->m_u.hdata[i] ^= 0xFF;
1267
1268 flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1269 flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1270 flow->m_ext.data[0] ^= cpu_to_be32(~0);
1271 flow->m_ext.data[1] ^= cpu_to_be32(~0);
1272}
1273
1274static int gfar_add_cls(struct gfar_private *priv,
1275 struct ethtool_rx_flow_spec *flow)
1276{
1277 struct ethtool_flow_spec_container *temp, *comp;
1278 int ret = 0;
1279
1280 temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1281 if (temp == NULL)
1282 return -ENOMEM;
1283 memcpy(&temp->fs, flow, sizeof(temp->fs));
1284
1285 gfar_invert_masks(&temp->fs);
1286 ret = gfar_check_capability(&temp->fs, priv);
1287 if (ret)
1288 goto clean_mem;
1289 /* Link in the new element at the right @location */
1290 if (list_empty(&priv->rx_list.list)) {
1291 ret = gfar_check_filer_hardware(priv);
1292 if (ret != 0)
1293 goto clean_mem;
1294 list_add(&temp->list, &priv->rx_list.list);
1295 goto process;
1296 } else {
1297 list_for_each_entry(comp, &priv->rx_list.list, list) {
1298 if (comp->fs.location > flow->location) {
1299 list_add_tail(&temp->list, &comp->list);
1300 goto process;
1301 }
1302 if (comp->fs.location == flow->location) {
1303 netdev_err(priv->ndev,
1304 "Rule not added: ID %d not free!\n",
1305 flow->location);
1306 ret = -EBUSY;
1307 goto clean_mem;
1308 }
1309 }
1310 list_add_tail(&temp->list, &priv->rx_list.list);
1311 }
1312
1313process:
1314 priv->rx_list.count++;
1315 ret = gfar_process_filer_changes(priv);
1316 if (ret)
1317 goto clean_list;
1318 return ret;
1319
1320clean_list:
1321 priv->rx_list.count--;
1322 list_del(&temp->list);
1323clean_mem:
1324 kfree(temp);
1325 return ret;
1326}
1327
1328static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1329{
1330 struct ethtool_flow_spec_container *comp;
1331 u32 ret = -EINVAL;
1332
1333 if (list_empty(&priv->rx_list.list))
1334 return ret;
1335
1336 list_for_each_entry(comp, &priv->rx_list.list, list) {
1337 if (comp->fs.location == loc) {
1338 list_del(&comp->list);
1339 kfree(comp);
1340 priv->rx_list.count--;
1341 gfar_process_filer_changes(priv);
1342 ret = 0;
1343 break;
1344 }
1345 }
1346
1347 return ret;
1348}
1349
1350static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1351{
1352 struct ethtool_flow_spec_container *comp;
1353 u32 ret = -EINVAL;
1354
1355 list_for_each_entry(comp, &priv->rx_list.list, list) {
1356 if (comp->fs.location == cmd->fs.location) {
1357 memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1358 gfar_invert_masks(&cmd->fs);
1359 ret = 0;
1360 break;
1361 }
1362 }
1363
1364 return ret;
1365}
1366
1367static int gfar_get_cls_all(struct gfar_private *priv,
1368 struct ethtool_rxnfc *cmd, u32 *rule_locs)
1369{
1370 struct ethtool_flow_spec_container *comp;
1371 u32 i = 0;
1372
1373 list_for_each_entry(comp, &priv->rx_list.list, list) {
1374 if (i == cmd->rule_cnt)
1375 return -EMSGSIZE;
1376 rule_locs[i] = comp->fs.location;
1377 i++;
1378 }
1379
1380 cmd->data = MAX_FILER_IDX;
1381 cmd->rule_cnt = i;
1382
1383 return 0;
1384}
1385
1386static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1387{
1388 struct gfar_private *priv = netdev_priv(dev);
1389 int ret = 0;
1390
1391 if (test_bit(GFAR_RESETTING, &priv->state))
1392 return -EBUSY;
1393
1394 mutex_lock(&priv->rx_queue_access);
1395
1396 switch (cmd->cmd) {
1397 case ETHTOOL_SRXFH:
1398 ret = gfar_set_hash_opts(priv, cmd);
1399 break;
1400 case ETHTOOL_SRXCLSRLINS:
1401 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1402 cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1403 cmd->fs.location >= MAX_FILER_IDX) {
1404 ret = -EINVAL;
1405 break;
1406 }
1407 ret = gfar_add_cls(priv, &cmd->fs);
1408 break;
1409 case ETHTOOL_SRXCLSRLDEL:
1410 ret = gfar_del_cls(priv, cmd->fs.location);
1411 break;
1412 default:
1413 ret = -EINVAL;
1414 }
1415
1416 mutex_unlock(&priv->rx_queue_access);
1417
1418 return ret;
1419}
1420
1421static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1422 u32 *rule_locs)
1423{
1424 struct gfar_private *priv = netdev_priv(dev);
1425 int ret = 0;
1426
1427 switch (cmd->cmd) {
1428 case ETHTOOL_GRXRINGS:
1429 cmd->data = priv->num_rx_queues;
1430 break;
1431 case ETHTOOL_GRXCLSRLCNT:
1432 cmd->rule_cnt = priv->rx_list.count;
1433 break;
1434 case ETHTOOL_GRXCLSRULE:
1435 ret = gfar_get_cls(priv, cmd);
1436 break;
1437 case ETHTOOL_GRXCLSRLALL:
1438 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1439 break;
1440 default:
1441 ret = -EINVAL;
1442 break;
1443 }
1444
1445 return ret;
1446}
1447
1448static int gfar_get_ts_info(struct net_device *dev,
1449 struct ethtool_ts_info *info)
1450{
1451 struct gfar_private *priv = netdev_priv(dev);
1452 struct platform_device *ptp_dev;
1453 struct device_node *ptp_node;
1454 struct ptp_qoriq *ptp = NULL;
1455
1456 info->phc_index = -1;
1457
1458 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1459 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1460 SOF_TIMESTAMPING_TX_SOFTWARE |
1461 SOF_TIMESTAMPING_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_RX_SOFTWARE |
1480 SOF_TIMESTAMPING_TX_SOFTWARE |
1481 SOF_TIMESTAMPING_SOFTWARE;
1482 info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1483 (1 << HWTSTAMP_TX_ON);
1484 info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1485 (1 << HWTSTAMP_FILTER_ALL);
1486 return 0;
1487}
1488
1489const struct ethtool_ops gfar_ethtool_ops = {
1490 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1491 ETHTOOL_COALESCE_MAX_FRAMES,
1492 .get_drvinfo = gfar_gdrvinfo,
1493 .get_regs_len = gfar_reglen,
1494 .get_regs = gfar_get_regs,
1495 .get_link = ethtool_op_get_link,
1496 .get_coalesce = gfar_gcoalesce,
1497 .set_coalesce = gfar_scoalesce,
1498 .get_ringparam = gfar_gringparam,
1499 .set_ringparam = gfar_sringparam,
1500 .get_pauseparam = gfar_gpauseparam,
1501 .set_pauseparam = gfar_spauseparam,
1502 .get_strings = gfar_gstrings,
1503 .get_sset_count = gfar_sset_count,
1504 .get_ethtool_stats = gfar_fill_stats,
1505 .get_msglevel = gfar_get_msglevel,
1506 .set_msglevel = gfar_set_msglevel,
1507#ifdef CONFIG_PM
1508 .get_wol = gfar_get_wol,
1509 .set_wol = gfar_set_wol,
1510#endif
1511 .set_rxnfc = gfar_set_nfc,
1512 .get_rxnfc = gfar_get_nfc,
1513 .get_ts_info = gfar_get_ts_info,
1514 .get_link_ksettings = phy_ethtool_get_link_ksettings,
1515 .set_link_ksettings = phy_ethtool_set_link_ksettings,
1516};
Linux 6.x block layer and io_uring tree(s)