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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * drivers/net/ethernet/freescale/gianfar_ethtool.c
4 *
5 * Gianfar Ethernet Driver
6 * Ethtool support for Gianfar Enet
7 * Based on e1000 ethtool support
8 *
9 * Author: Andy Fleming
10 * Maintainer: Kumar Gala
11 * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
12 *
13 * Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc.
14 */
15
16#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
17
18#include <linux/kernel.h>
19#include <linux/string.h>
20#include <linux/errno.h>
21#include <linux/interrupt.h>
22#include <linux/delay.h>
23#include <linux/netdevice.h>
24#include <linux/etherdevice.h>
25#include <linux/net_tstamp.h>
26#include <linux/skbuff.h>
27#include <linux/spinlock.h>
28#include <linux/mm.h>
29
30#include <asm/io.h>
31#include <asm/irq.h>
32#include <linux/uaccess.h>
33#include <linux/module.h>
34#include <linux/crc32.h>
35#include <asm/types.h>
36#include <linux/ethtool.h>
37#include <linux/mii.h>
38#include <linux/phy.h>
39#include <linux/sort.h>
40#include <linux/if_vlan.h>
41#include <linux/of.h>
42#include <linux/of_platform.h>
43#include <linux/platform_device.h>
44#include <linux/fsl/ptp_qoriq.h>
45
46#include "gianfar.h"
47
48#define GFAR_MAX_COAL_USECS 0xffff
49#define GFAR_MAX_COAL_FRAMES 0xff
50
51static const char stat_gstrings[][ETH_GSTRING_LEN] = {
52 /* extra stats */
53 "rx-allocation-errors",
54 "rx-large-frame-errors",
55 "rx-short-frame-errors",
56 "rx-non-octet-errors",
57 "rx-crc-errors",
58 "rx-overrun-errors",
59 "rx-busy-errors",
60 "rx-babbling-errors",
61 "rx-truncated-frames",
62 "ethernet-bus-error",
63 "tx-babbling-errors",
64 "tx-underrun-errors",
65 "tx-timeout-errors",
66 /* rmon stats */
67 "tx-rx-64-frames",
68 "tx-rx-65-127-frames",
69 "tx-rx-128-255-frames",
70 "tx-rx-256-511-frames",
71 "tx-rx-512-1023-frames",
72 "tx-rx-1024-1518-frames",
73 "tx-rx-1519-1522-good-vlan",
74 "rx-bytes",
75 "rx-packets",
76 "rx-fcs-errors",
77 "receive-multicast-packet",
78 "receive-broadcast-packet",
79 "rx-control-frame-packets",
80 "rx-pause-frame-packets",
81 "rx-unknown-op-code",
82 "rx-alignment-error",
83 "rx-frame-length-error",
84 "rx-code-error",
85 "rx-carrier-sense-error",
86 "rx-undersize-packets",
87 "rx-oversize-packets",
88 "rx-fragmented-frames",
89 "rx-jabber-frames",
90 "rx-dropped-frames",
91 "tx-byte-counter",
92 "tx-packets",
93 "tx-multicast-packets",
94 "tx-broadcast-packets",
95 "tx-pause-control-frames",
96 "tx-deferral-packets",
97 "tx-excessive-deferral-packets",
98 "tx-single-collision-packets",
99 "tx-multiple-collision-packets",
100 "tx-late-collision-packets",
101 "tx-excessive-collision-packets",
102 "tx-total-collision",
103 "reserved",
104 "tx-dropped-frames",
105 "tx-jabber-frames",
106 "tx-fcs-errors",
107 "tx-control-frames",
108 "tx-oversize-frames",
109 "tx-undersize-frames",
110 "tx-fragmented-frames",
111};
112
113/* Fill in a buffer with the strings which correspond to the
114 * stats */
115static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
116{
117 struct gfar_private *priv = netdev_priv(dev);
118
119 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
120 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
121 else
122 memcpy(buf, stat_gstrings,
123 GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
124}
125
126/* Fill in an array of 64-bit statistics from various sources.
127 * This array will be appended to the end of the ethtool_stats
128 * structure, and returned to user space
129 */
130static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
131 u64 *buf)
132{
133 int i;
134 struct gfar_private *priv = netdev_priv(dev);
135 struct gfar __iomem *regs = priv->gfargrp[0].regs;
136 atomic64_t *extra = (atomic64_t *)&priv->extra_stats;
137
138 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
139 buf[i] = atomic64_read(&extra[i]);
140
141 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
142 u32 __iomem *rmon = (u32 __iomem *) ®s->rmon;
143
144 for (; i < GFAR_STATS_LEN; i++, rmon++)
145 buf[i] = (u64) gfar_read(rmon);
146 }
147}
148
149static int gfar_sset_count(struct net_device *dev, int sset)
150{
151 struct gfar_private *priv = netdev_priv(dev);
152
153 switch (sset) {
154 case ETH_SS_STATS:
155 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
156 return GFAR_STATS_LEN;
157 else
158 return GFAR_EXTRA_STATS_LEN;
159 default:
160 return -EOPNOTSUPP;
161 }
162}
163
164/* Fills in the drvinfo structure with some basic info */
165static void gfar_gdrvinfo(struct net_device *dev,
166 struct ethtool_drvinfo *drvinfo)
167{
168 strscpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
169}
170
171/* Return the length of the register structure */
172static int gfar_reglen(struct net_device *dev)
173{
174 return sizeof (struct gfar);
175}
176
177/* Return a dump of the GFAR register space */
178static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
179 void *regbuf)
180{
181 int i;
182 struct gfar_private *priv = netdev_priv(dev);
183 u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
184 u32 *buf = (u32 *) regbuf;
185
186 for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
187 buf[i] = gfar_read(&theregs[i]);
188}
189
190/* Convert microseconds to ethernet clock ticks, which changes
191 * depending on what speed the controller is running at */
192static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
193 unsigned int usecs)
194{
195 struct net_device *ndev = priv->ndev;
196 struct phy_device *phydev = ndev->phydev;
197 unsigned int count;
198
199 /* The timer is different, depending on the interface speed */
200 switch (phydev->speed) {
201 case SPEED_1000:
202 count = GFAR_GBIT_TIME;
203 break;
204 case SPEED_100:
205 count = GFAR_100_TIME;
206 break;
207 case SPEED_10:
208 default:
209 count = GFAR_10_TIME;
210 break;
211 }
212
213 /* Make sure we return a number greater than 0
214 * if usecs > 0 */
215 return DIV_ROUND_UP(usecs * 1000, count);
216}
217
218/* Convert ethernet clock ticks to microseconds */
219static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
220 unsigned int ticks)
221{
222 struct net_device *ndev = priv->ndev;
223 struct phy_device *phydev = ndev->phydev;
224 unsigned int count;
225
226 /* The timer is different, depending on the interface speed */
227 switch (phydev->speed) {
228 case SPEED_1000:
229 count = GFAR_GBIT_TIME;
230 break;
231 case SPEED_100:
232 count = GFAR_100_TIME;
233 break;
234 case SPEED_10:
235 default:
236 count = GFAR_10_TIME;
237 break;
238 }
239
240 /* Make sure we return a number greater than 0 */
241 /* if ticks is > 0 */
242 return (ticks * count) / 1000;
243}
244
245/* Get the coalescing parameters, and put them in the cvals
246 * structure. */
247static int gfar_gcoalesce(struct net_device *dev,
248 struct ethtool_coalesce *cvals,
249 struct kernel_ethtool_coalesce *kernel_coal,
250 struct netlink_ext_ack *extack)
251{
252 struct gfar_private *priv = netdev_priv(dev);
253 struct gfar_priv_rx_q *rx_queue = NULL;
254 struct gfar_priv_tx_q *tx_queue = NULL;
255 unsigned long rxtime;
256 unsigned long rxcount;
257 unsigned long txtime;
258 unsigned long txcount;
259
260 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
261 return -EOPNOTSUPP;
262
263 if (!dev->phydev)
264 return -ENODEV;
265
266 rx_queue = priv->rx_queue[0];
267 tx_queue = priv->tx_queue[0];
268
269 rxtime = get_ictt_value(rx_queue->rxic);
270 rxcount = get_icft_value(rx_queue->rxic);
271 txtime = get_ictt_value(tx_queue->txic);
272 txcount = get_icft_value(tx_queue->txic);
273 cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
274 cvals->rx_max_coalesced_frames = rxcount;
275
276 cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
277 cvals->tx_max_coalesced_frames = txcount;
278
279 return 0;
280}
281
282/* Change the coalescing values.
283 * Both cvals->*_usecs and cvals->*_frames have to be > 0
284 * in order for coalescing to be active
285 */
286static int gfar_scoalesce(struct net_device *dev,
287 struct ethtool_coalesce *cvals,
288 struct kernel_ethtool_coalesce *kernel_coal,
289 struct netlink_ext_ack *extack)
290{
291 struct gfar_private *priv = netdev_priv(dev);
292 int i, err = 0;
293
294 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
295 return -EOPNOTSUPP;
296
297 if (!dev->phydev)
298 return -ENODEV;
299
300 /* Check the bounds of the values */
301 if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
302 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
303 GFAR_MAX_COAL_USECS);
304 return -EINVAL;
305 }
306
307 if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
308 netdev_info(dev, "Coalescing is limited to %d frames\n",
309 GFAR_MAX_COAL_FRAMES);
310 return -EINVAL;
311 }
312
313 /* Check the bounds of the values */
314 if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
315 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
316 GFAR_MAX_COAL_USECS);
317 return -EINVAL;
318 }
319
320 if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
321 netdev_info(dev, "Coalescing is limited to %d frames\n",
322 GFAR_MAX_COAL_FRAMES);
323 return -EINVAL;
324 }
325
326 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
327 cpu_relax();
328
329 /* Set up rx coalescing */
330 if ((cvals->rx_coalesce_usecs == 0) ||
331 (cvals->rx_max_coalesced_frames == 0)) {
332 for (i = 0; i < priv->num_rx_queues; i++)
333 priv->rx_queue[i]->rxcoalescing = 0;
334 } else {
335 for (i = 0; i < priv->num_rx_queues; i++)
336 priv->rx_queue[i]->rxcoalescing = 1;
337 }
338
339 for (i = 0; i < priv->num_rx_queues; i++) {
340 priv->rx_queue[i]->rxic = mk_ic_value(
341 cvals->rx_max_coalesced_frames,
342 gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
343 }
344
345 /* Set up tx coalescing */
346 if ((cvals->tx_coalesce_usecs == 0) ||
347 (cvals->tx_max_coalesced_frames == 0)) {
348 for (i = 0; i < priv->num_tx_queues; i++)
349 priv->tx_queue[i]->txcoalescing = 0;
350 } else {
351 for (i = 0; i < priv->num_tx_queues; i++)
352 priv->tx_queue[i]->txcoalescing = 1;
353 }
354
355 for (i = 0; i < priv->num_tx_queues; i++) {
356 priv->tx_queue[i]->txic = mk_ic_value(
357 cvals->tx_max_coalesced_frames,
358 gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
359 }
360
361 if (dev->flags & IFF_UP) {
362 stop_gfar(dev);
363 err = startup_gfar(dev);
364 } else {
365 gfar_mac_reset(priv);
366 }
367
368 clear_bit_unlock(GFAR_RESETTING, &priv->state);
369
370 return err;
371}
372
373/* Fills in rvals with the current ring parameters. Currently,
374 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
375 * jumbo are ignored by the driver */
376static void gfar_gringparam(struct net_device *dev,
377 struct ethtool_ringparam *rvals,
378 struct kernel_ethtool_ringparam *kernel_rvals,
379 struct netlink_ext_ack *extack)
380{
381 struct gfar_private *priv = netdev_priv(dev);
382 struct gfar_priv_tx_q *tx_queue = NULL;
383 struct gfar_priv_rx_q *rx_queue = NULL;
384
385 tx_queue = priv->tx_queue[0];
386 rx_queue = priv->rx_queue[0];
387
388 rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
389 rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
390 rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
391 rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
392
393 /* Values changeable by the user. The valid values are
394 * in the range 1 to the "*_max_pending" counterpart above.
395 */
396 rvals->rx_pending = rx_queue->rx_ring_size;
397 rvals->rx_mini_pending = rx_queue->rx_ring_size;
398 rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
399 rvals->tx_pending = tx_queue->tx_ring_size;
400}
401
402/* Change the current ring parameters, stopping the controller if
403 * necessary so that we don't mess things up while we're in motion.
404 */
405static int gfar_sringparam(struct net_device *dev,
406 struct ethtool_ringparam *rvals,
407 struct kernel_ethtool_ringparam *kernel_rvals,
408 struct netlink_ext_ack *extack)
409{
410 struct gfar_private *priv = netdev_priv(dev);
411 int err = 0, i;
412
413 if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
414 return -EINVAL;
415
416 if (!is_power_of_2(rvals->rx_pending)) {
417 netdev_err(dev, "Ring sizes must be a power of 2\n");
418 return -EINVAL;
419 }
420
421 if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
422 return -EINVAL;
423
424 if (!is_power_of_2(rvals->tx_pending)) {
425 netdev_err(dev, "Ring sizes must be a power of 2\n");
426 return -EINVAL;
427 }
428
429 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
430 cpu_relax();
431
432 if (dev->flags & IFF_UP)
433 stop_gfar(dev);
434
435 /* Change the sizes */
436 for (i = 0; i < priv->num_rx_queues; i++)
437 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
438
439 for (i = 0; i < priv->num_tx_queues; i++)
440 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
441
442 /* Rebuild the rings with the new size */
443 if (dev->flags & IFF_UP)
444 err = startup_gfar(dev);
445
446 clear_bit_unlock(GFAR_RESETTING, &priv->state);
447
448 return err;
449}
450
451static void gfar_gpauseparam(struct net_device *dev,
452 struct ethtool_pauseparam *epause)
453{
454 struct gfar_private *priv = netdev_priv(dev);
455
456 epause->autoneg = !!priv->pause_aneg_en;
457 epause->rx_pause = !!priv->rx_pause_en;
458 epause->tx_pause = !!priv->tx_pause_en;
459}
460
461static int gfar_spauseparam(struct net_device *dev,
462 struct ethtool_pauseparam *epause)
463{
464 struct gfar_private *priv = netdev_priv(dev);
465 struct phy_device *phydev = dev->phydev;
466 struct gfar __iomem *regs = priv->gfargrp[0].regs;
467
468 if (!phydev)
469 return -ENODEV;
470
471 if (!phy_validate_pause(phydev, epause))
472 return -EINVAL;
473
474 priv->rx_pause_en = priv->tx_pause_en = 0;
475 phy_set_asym_pause(phydev, epause->rx_pause, epause->tx_pause);
476 if (epause->rx_pause) {
477 priv->rx_pause_en = 1;
478
479 if (epause->tx_pause) {
480 priv->tx_pause_en = 1;
481 }
482 } else if (epause->tx_pause) {
483 priv->tx_pause_en = 1;
484 }
485
486 if (epause->autoneg)
487 priv->pause_aneg_en = 1;
488 else
489 priv->pause_aneg_en = 0;
490
491 if (!epause->autoneg) {
492 u32 tempval = gfar_read(®s->maccfg1);
493
494 tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
495
496 priv->tx_actual_en = 0;
497 if (priv->tx_pause_en) {
498 priv->tx_actual_en = 1;
499 tempval |= MACCFG1_TX_FLOW;
500 }
501
502 if (priv->rx_pause_en)
503 tempval |= MACCFG1_RX_FLOW;
504 gfar_write(®s->maccfg1, tempval);
505 }
506
507 return 0;
508}
509
510int gfar_set_features(struct net_device *dev, netdev_features_t features)
511{
512 netdev_features_t changed = dev->features ^ features;
513 struct gfar_private *priv = netdev_priv(dev);
514 int err = 0;
515
516 if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
517 NETIF_F_RXCSUM)))
518 return 0;
519
520 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
521 cpu_relax();
522
523 dev->features = features;
524
525 if (dev->flags & IFF_UP) {
526 /* Now we take down the rings to rebuild them */
527 stop_gfar(dev);
528 err = startup_gfar(dev);
529 } else {
530 gfar_mac_reset(priv);
531 }
532
533 clear_bit_unlock(GFAR_RESETTING, &priv->state);
534
535 return err;
536}
537
538static uint32_t gfar_get_msglevel(struct net_device *dev)
539{
540 struct gfar_private *priv = netdev_priv(dev);
541
542 return priv->msg_enable;
543}
544
545static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
546{
547 struct gfar_private *priv = netdev_priv(dev);
548
549 priv->msg_enable = data;
550}
551
552#ifdef CONFIG_PM
553static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
554{
555 struct gfar_private *priv = netdev_priv(dev);
556
557 wol->supported = 0;
558 wol->wolopts = 0;
559
560 if (priv->wol_supported & GFAR_WOL_MAGIC)
561 wol->supported |= WAKE_MAGIC;
562
563 if (priv->wol_supported & GFAR_WOL_FILER_UCAST)
564 wol->supported |= WAKE_UCAST;
565
566 if (priv->wol_opts & GFAR_WOL_MAGIC)
567 wol->wolopts |= WAKE_MAGIC;
568
569 if (priv->wol_opts & GFAR_WOL_FILER_UCAST)
570 wol->wolopts |= WAKE_UCAST;
571}
572
573static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
574{
575 struct gfar_private *priv = netdev_priv(dev);
576 u16 wol_opts = 0;
577 int err;
578
579 if (!priv->wol_supported && wol->wolopts)
580 return -EINVAL;
581
582 if (wol->wolopts & ~(WAKE_MAGIC | WAKE_UCAST))
583 return -EINVAL;
584
585 if (wol->wolopts & WAKE_MAGIC) {
586 wol_opts |= GFAR_WOL_MAGIC;
587 } else {
588 if (wol->wolopts & WAKE_UCAST)
589 wol_opts |= GFAR_WOL_FILER_UCAST;
590 }
591
592 wol_opts &= priv->wol_supported;
593 priv->wol_opts = 0;
594
595 err = device_set_wakeup_enable(priv->dev, wol_opts);
596 if (err)
597 return err;
598
599 priv->wol_opts = wol_opts;
600
601 return 0;
602}
603#endif
604
605static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
606{
607 u32 fcr = 0x0, fpr = FPR_FILER_MASK;
608
609 if (ethflow & RXH_L2DA) {
610 fcr = RQFCR_PID_DAH | RQFCR_CMP_NOMATCH |
611 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
612 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
613 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
614 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
615 priv->cur_filer_idx = priv->cur_filer_idx - 1;
616
617 fcr = RQFCR_PID_DAL | RQFCR_CMP_NOMATCH |
618 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
619 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
620 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
621 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
622 priv->cur_filer_idx = priv->cur_filer_idx - 1;
623 }
624
625 if (ethflow & RXH_VLAN) {
626 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
627 RQFCR_AND | RQFCR_HASHTBL_0;
628 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
629 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
630 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
631 priv->cur_filer_idx = priv->cur_filer_idx - 1;
632 }
633
634 if (ethflow & RXH_IP_SRC) {
635 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
636 RQFCR_AND | RQFCR_HASHTBL_0;
637 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
638 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
639 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
640 priv->cur_filer_idx = priv->cur_filer_idx - 1;
641 }
642
643 if (ethflow & (RXH_IP_DST)) {
644 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
645 RQFCR_AND | RQFCR_HASHTBL_0;
646 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
647 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
648 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
649 priv->cur_filer_idx = priv->cur_filer_idx - 1;
650 }
651
652 if (ethflow & RXH_L3_PROTO) {
653 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
654 RQFCR_AND | RQFCR_HASHTBL_0;
655 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
656 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
657 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
658 priv->cur_filer_idx = priv->cur_filer_idx - 1;
659 }
660
661 if (ethflow & RXH_L4_B_0_1) {
662 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
663 RQFCR_AND | RQFCR_HASHTBL_0;
664 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
665 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
666 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
667 priv->cur_filer_idx = priv->cur_filer_idx - 1;
668 }
669
670 if (ethflow & RXH_L4_B_2_3) {
671 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
672 RQFCR_AND | RQFCR_HASHTBL_0;
673 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
674 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
675 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
676 priv->cur_filer_idx = priv->cur_filer_idx - 1;
677 }
678}
679
680static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
681 u64 class)
682{
683 unsigned int cmp_rqfpr;
684 unsigned int *local_rqfpr;
685 unsigned int *local_rqfcr;
686 int i = 0x0, k = 0x0;
687 int j = MAX_FILER_IDX, l = 0x0;
688 int ret = 1;
689
690 local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
691 GFP_KERNEL);
692 local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
693 GFP_KERNEL);
694 if (!local_rqfpr || !local_rqfcr) {
695 ret = 0;
696 goto err;
697 }
698
699 switch (class) {
700 case TCP_V4_FLOW:
701 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
702 break;
703 case UDP_V4_FLOW:
704 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
705 break;
706 case TCP_V6_FLOW:
707 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
708 break;
709 case UDP_V6_FLOW:
710 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
711 break;
712 default:
713 netdev_err(priv->ndev,
714 "Right now this class is not supported\n");
715 ret = 0;
716 goto err;
717 }
718
719 for (i = 0; i < MAX_FILER_IDX + 1; i++) {
720 local_rqfpr[j] = priv->ftp_rqfpr[i];
721 local_rqfcr[j] = priv->ftp_rqfcr[i];
722 j--;
723 if ((priv->ftp_rqfcr[i] ==
724 (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
725 (priv->ftp_rqfpr[i] == cmp_rqfpr))
726 break;
727 }
728
729 if (i == MAX_FILER_IDX + 1) {
730 netdev_err(priv->ndev,
731 "No parse rule found, can't create hash rules\n");
732 ret = 0;
733 goto err;
734 }
735
736 /* If a match was found, then it begins the starting of a cluster rule
737 * if it was already programmed, we need to overwrite these rules
738 */
739 for (l = i+1; l < MAX_FILER_IDX; l++) {
740 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
741 !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
742 priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
743 RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
744 priv->ftp_rqfpr[l] = FPR_FILER_MASK;
745 gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
746 priv->ftp_rqfpr[l]);
747 break;
748 }
749
750 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
751 (priv->ftp_rqfcr[l] & RQFCR_AND))
752 continue;
753 else {
754 local_rqfpr[j] = priv->ftp_rqfpr[l];
755 local_rqfcr[j] = priv->ftp_rqfcr[l];
756 j--;
757 }
758 }
759
760 priv->cur_filer_idx = l - 1;
761
762 /* hash rules */
763 ethflow_to_filer_rules(priv, ethflow);
764
765 /* Write back the popped out rules again */
766 for (k = j+1; k < MAX_FILER_IDX; k++) {
767 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
768 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
769 gfar_write_filer(priv, priv->cur_filer_idx,
770 local_rqfcr[k], local_rqfpr[k]);
771 if (!priv->cur_filer_idx)
772 break;
773 priv->cur_filer_idx = priv->cur_filer_idx - 1;
774 }
775
776err:
777 kfree(local_rqfcr);
778 kfree(local_rqfpr);
779 return ret;
780}
781
782static int gfar_set_hash_opts(struct gfar_private *priv,
783 struct ethtool_rxnfc *cmd)
784{
785 /* write the filer rules here */
786 if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
787 return -EINVAL;
788
789 return 0;
790}
791
792static int gfar_check_filer_hardware(struct gfar_private *priv)
793{
794 struct gfar __iomem *regs = priv->gfargrp[0].regs;
795 u32 i;
796
797 /* Check if we are in FIFO mode */
798 i = gfar_read(®s->ecntrl);
799 i &= ECNTRL_FIFM;
800 if (i == ECNTRL_FIFM) {
801 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
802 i = gfar_read(®s->rctrl);
803 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
804 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
805 netdev_info(priv->ndev,
806 "Receive Queue Filtering enabled\n");
807 } else {
808 netdev_warn(priv->ndev,
809 "Receive Queue Filtering disabled\n");
810 return -EOPNOTSUPP;
811 }
812 }
813 /* Or in standard mode */
814 else {
815 i = gfar_read(®s->rctrl);
816 i &= RCTRL_PRSDEP_MASK;
817 if (i == RCTRL_PRSDEP_MASK) {
818 netdev_info(priv->ndev,
819 "Receive Queue Filtering enabled\n");
820 } else {
821 netdev_warn(priv->ndev,
822 "Receive Queue Filtering disabled\n");
823 return -EOPNOTSUPP;
824 }
825 }
826
827 /* Sets the properties for arbitrary filer rule
828 * to the first 4 Layer 4 Bytes
829 */
830 gfar_write(®s->rbifx, 0xC0C1C2C3);
831 return 0;
832}
833
834/* Write a mask to filer cache */
835static void gfar_set_mask(u32 mask, struct filer_table *tab)
836{
837 tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
838 tab->fe[tab->index].prop = mask;
839 tab->index++;
840}
841
842/* Sets parse bits (e.g. IP or TCP) */
843static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
844{
845 gfar_set_mask(mask, tab);
846 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
847 RQFCR_AND;
848 tab->fe[tab->index].prop = value;
849 tab->index++;
850}
851
852static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
853 struct filer_table *tab)
854{
855 gfar_set_mask(mask, tab);
856 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
857 tab->fe[tab->index].prop = value;
858 tab->index++;
859}
860
861/* For setting a tuple of value and mask of type flag
862 * Example:
863 * IP-Src = 10.0.0.0/255.0.0.0
864 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
865 *
866 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
867 * For a don't care mask it gives us a 0
868 *
869 * The check if don't care and the mask adjustment if mask=0 is done for VLAN
870 * and MAC stuff on an upper level (due to missing information on this level).
871 * For these guys we can discard them if they are value=0 and mask=0.
872 *
873 * Further the all masks are one-padded for better hardware efficiency.
874 */
875static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
876 struct filer_table *tab)
877{
878 switch (flag) {
879 /* 3bit */
880 case RQFCR_PID_PRI:
881 if (!(value | mask))
882 return;
883 mask |= RQFCR_PID_PRI_MASK;
884 break;
885 /* 8bit */
886 case RQFCR_PID_L4P:
887 case RQFCR_PID_TOS:
888 if (!~(mask | RQFCR_PID_L4P_MASK))
889 return;
890 if (!mask)
891 mask = ~0;
892 else
893 mask |= RQFCR_PID_L4P_MASK;
894 break;
895 /* 12bit */
896 case RQFCR_PID_VID:
897 if (!(value | mask))
898 return;
899 mask |= RQFCR_PID_VID_MASK;
900 break;
901 /* 16bit */
902 case RQFCR_PID_DPT:
903 case RQFCR_PID_SPT:
904 case RQFCR_PID_ETY:
905 if (!~(mask | RQFCR_PID_PORT_MASK))
906 return;
907 if (!mask)
908 mask = ~0;
909 else
910 mask |= RQFCR_PID_PORT_MASK;
911 break;
912 /* 24bit */
913 case RQFCR_PID_DAH:
914 case RQFCR_PID_DAL:
915 case RQFCR_PID_SAH:
916 case RQFCR_PID_SAL:
917 if (!(value | mask))
918 return;
919 mask |= RQFCR_PID_MAC_MASK;
920 break;
921 /* for all real 32bit masks */
922 default:
923 if (!~mask)
924 return;
925 if (!mask)
926 mask = ~0;
927 break;
928 }
929 gfar_set_general_attribute(value, mask, flag, tab);
930}
931
932/* Translates value and mask for UDP, TCP or SCTP */
933static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
934 struct ethtool_tcpip4_spec *mask,
935 struct filer_table *tab)
936{
937 gfar_set_attribute(be32_to_cpu(value->ip4src),
938 be32_to_cpu(mask->ip4src),
939 RQFCR_PID_SIA, tab);
940 gfar_set_attribute(be32_to_cpu(value->ip4dst),
941 be32_to_cpu(mask->ip4dst),
942 RQFCR_PID_DIA, tab);
943 gfar_set_attribute(be16_to_cpu(value->pdst),
944 be16_to_cpu(mask->pdst),
945 RQFCR_PID_DPT, tab);
946 gfar_set_attribute(be16_to_cpu(value->psrc),
947 be16_to_cpu(mask->psrc),
948 RQFCR_PID_SPT, tab);
949 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
950}
951
952/* Translates value and mask for RAW-IP4 */
953static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
954 struct ethtool_usrip4_spec *mask,
955 struct filer_table *tab)
956{
957 gfar_set_attribute(be32_to_cpu(value->ip4src),
958 be32_to_cpu(mask->ip4src),
959 RQFCR_PID_SIA, tab);
960 gfar_set_attribute(be32_to_cpu(value->ip4dst),
961 be32_to_cpu(mask->ip4dst),
962 RQFCR_PID_DIA, tab);
963 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
964 gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
965 gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
966 be32_to_cpu(mask->l4_4_bytes),
967 RQFCR_PID_ARB, tab);
968
969}
970
971/* Translates value and mask for ETHER spec */
972static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
973 struct filer_table *tab)
974{
975 u32 upper_temp_mask = 0;
976 u32 lower_temp_mask = 0;
977
978 /* Source address */
979 if (!is_broadcast_ether_addr(mask->h_source)) {
980 if (is_zero_ether_addr(mask->h_source)) {
981 upper_temp_mask = 0xFFFFFFFF;
982 lower_temp_mask = 0xFFFFFFFF;
983 } else {
984 upper_temp_mask = mask->h_source[0] << 16 |
985 mask->h_source[1] << 8 |
986 mask->h_source[2];
987 lower_temp_mask = mask->h_source[3] << 16 |
988 mask->h_source[4] << 8 |
989 mask->h_source[5];
990 }
991 /* Upper 24bit */
992 gfar_set_attribute(value->h_source[0] << 16 |
993 value->h_source[1] << 8 |
994 value->h_source[2],
995 upper_temp_mask, RQFCR_PID_SAH, tab);
996 /* And the same for the lower part */
997 gfar_set_attribute(value->h_source[3] << 16 |
998 value->h_source[4] << 8 |
999 value->h_source[5],
1000 lower_temp_mask, RQFCR_PID_SAL, tab);
1001 }
1002 /* Destination address */
1003 if (!is_broadcast_ether_addr(mask->h_dest)) {
1004 /* Special for destination is limited broadcast */
1005 if ((is_broadcast_ether_addr(value->h_dest) &&
1006 is_zero_ether_addr(mask->h_dest))) {
1007 gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1008 } else {
1009 if (is_zero_ether_addr(mask->h_dest)) {
1010 upper_temp_mask = 0xFFFFFFFF;
1011 lower_temp_mask = 0xFFFFFFFF;
1012 } else {
1013 upper_temp_mask = mask->h_dest[0] << 16 |
1014 mask->h_dest[1] << 8 |
1015 mask->h_dest[2];
1016 lower_temp_mask = mask->h_dest[3] << 16 |
1017 mask->h_dest[4] << 8 |
1018 mask->h_dest[5];
1019 }
1020
1021 /* Upper 24bit */
1022 gfar_set_attribute(value->h_dest[0] << 16 |
1023 value->h_dest[1] << 8 |
1024 value->h_dest[2],
1025 upper_temp_mask, RQFCR_PID_DAH, tab);
1026 /* And the same for the lower part */
1027 gfar_set_attribute(value->h_dest[3] << 16 |
1028 value->h_dest[4] << 8 |
1029 value->h_dest[5],
1030 lower_temp_mask, RQFCR_PID_DAL, tab);
1031 }
1032 }
1033
1034 gfar_set_attribute(be16_to_cpu(value->h_proto),
1035 be16_to_cpu(mask->h_proto),
1036 RQFCR_PID_ETY, tab);
1037}
1038
1039static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1040{
1041 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1042}
1043
1044static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1045{
1046 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1047}
1048
1049static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1050{
1051 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1052}
1053
1054static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1055{
1056 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1057}
1058
1059static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1060{
1061 return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1062 VLAN_PRIO_SHIFT;
1063}
1064
1065static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1066{
1067 return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1068 VLAN_PRIO_SHIFT;
1069}
1070
1071/* Convert a rule to binary filter format of gianfar */
1072static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1073 struct filer_table *tab)
1074{
1075 u32 vlan = 0, vlan_mask = 0;
1076 u32 id = 0, id_mask = 0;
1077 u32 cfi = 0, cfi_mask = 0;
1078 u32 prio = 0, prio_mask = 0;
1079 u32 old_index = tab->index;
1080
1081 /* Check if vlan is wanted */
1082 if ((rule->flow_type & FLOW_EXT) &&
1083 (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1084 if (!rule->m_ext.vlan_tci)
1085 rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1086
1087 vlan = RQFPR_VLN;
1088 vlan_mask = RQFPR_VLN;
1089
1090 /* Separate the fields */
1091 id = vlan_tci_vid(rule);
1092 id_mask = vlan_tci_vidm(rule);
1093 cfi = vlan_tci_cfi(rule);
1094 cfi_mask = vlan_tci_cfim(rule);
1095 prio = vlan_tci_prio(rule);
1096 prio_mask = vlan_tci_priom(rule);
1097
1098 if (cfi_mask) {
1099 if (cfi)
1100 vlan |= RQFPR_CFI;
1101 vlan_mask |= RQFPR_CFI;
1102 }
1103 }
1104
1105 switch (rule->flow_type & ~FLOW_EXT) {
1106 case TCP_V4_FLOW:
1107 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1108 RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1109 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1110 &rule->m_u.tcp_ip4_spec, tab);
1111 break;
1112 case UDP_V4_FLOW:
1113 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1114 RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1115 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1116 &rule->m_u.udp_ip4_spec, tab);
1117 break;
1118 case SCTP_V4_FLOW:
1119 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1120 tab);
1121 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1122 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1123 (struct ethtool_tcpip4_spec *)&rule->m_u,
1124 tab);
1125 break;
1126 case IP_USER_FLOW:
1127 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1128 tab);
1129 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1130 (struct ethtool_usrip4_spec *) &rule->m_u,
1131 tab);
1132 break;
1133 case ETHER_FLOW:
1134 if (vlan)
1135 gfar_set_parse_bits(vlan, vlan_mask, tab);
1136 gfar_set_ether((struct ethhdr *) &rule->h_u,
1137 (struct ethhdr *) &rule->m_u, tab);
1138 break;
1139 default:
1140 return -1;
1141 }
1142
1143 /* Set the vlan attributes in the end */
1144 if (vlan) {
1145 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1146 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1147 }
1148
1149 /* If there has been nothing written till now, it must be a default */
1150 if (tab->index == old_index) {
1151 gfar_set_mask(0xFFFFFFFF, tab);
1152 tab->fe[tab->index].ctrl = 0x20;
1153 tab->fe[tab->index].prop = 0x0;
1154 tab->index++;
1155 }
1156
1157 /* Remove last AND */
1158 tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1159
1160 /* Specify which queue to use or to drop */
1161 if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1162 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1163 else
1164 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1165
1166 /* Only big enough entries can be clustered */
1167 if (tab->index > (old_index + 2)) {
1168 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1169 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1170 }
1171
1172 /* In rare cases the cache can be full while there is
1173 * free space in hw
1174 */
1175 if (tab->index > MAX_FILER_CACHE_IDX - 1)
1176 return -EBUSY;
1177
1178 return 0;
1179}
1180
1181/* Write the bit-pattern from software's buffer to hardware registers */
1182static int gfar_write_filer_table(struct gfar_private *priv,
1183 struct filer_table *tab)
1184{
1185 u32 i = 0;
1186 if (tab->index > MAX_FILER_IDX - 1)
1187 return -EBUSY;
1188
1189 /* Fill regular entries */
1190 for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
1191 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1192 /* Fill the rest with fall-troughs */
1193 for (; i < MAX_FILER_IDX; i++)
1194 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1195 /* Last entry must be default accept
1196 * because that's what people expect
1197 */
1198 gfar_write_filer(priv, i, 0x20, 0x0);
1199
1200 return 0;
1201}
1202
1203static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1204 struct gfar_private *priv)
1205{
1206
1207 if (flow->flow_type & FLOW_EXT) {
1208 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1209 netdev_warn(priv->ndev,
1210 "User-specific data not supported!\n");
1211 if (~flow->m_ext.vlan_etype)
1212 netdev_warn(priv->ndev,
1213 "VLAN-etype not supported!\n");
1214 }
1215 if (flow->flow_type == IP_USER_FLOW)
1216 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1217 netdev_warn(priv->ndev,
1218 "IP-Version differing from IPv4 not supported!\n");
1219
1220 return 0;
1221}
1222
1223static int gfar_process_filer_changes(struct gfar_private *priv)
1224{
1225 struct ethtool_flow_spec_container *j;
1226 struct filer_table *tab;
1227 s32 ret = 0;
1228
1229 /* So index is set to zero, too! */
1230 tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1231 if (tab == NULL)
1232 return -ENOMEM;
1233
1234 /* Now convert the existing filer data from flow_spec into
1235 * filer tables binary format
1236 */
1237 list_for_each_entry(j, &priv->rx_list.list, list) {
1238 ret = gfar_convert_to_filer(&j->fs, tab);
1239 if (ret == -EBUSY) {
1240 netdev_err(priv->ndev,
1241 "Rule not added: No free space!\n");
1242 goto end;
1243 }
1244 if (ret == -1) {
1245 netdev_err(priv->ndev,
1246 "Rule not added: Unsupported Flow-type!\n");
1247 goto end;
1248 }
1249 }
1250
1251 /* Write everything to hardware */
1252 ret = gfar_write_filer_table(priv, tab);
1253 if (ret == -EBUSY) {
1254 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1255 goto end;
1256 }
1257
1258end:
1259 kfree(tab);
1260 return ret;
1261}
1262
1263static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1264{
1265 u32 i = 0;
1266
1267 for (i = 0; i < sizeof(flow->m_u); i++)
1268 flow->m_u.hdata[i] ^= 0xFF;
1269
1270 flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1271 flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1272 flow->m_ext.data[0] ^= cpu_to_be32(~0);
1273 flow->m_ext.data[1] ^= cpu_to_be32(~0);
1274}
1275
1276static int gfar_add_cls(struct gfar_private *priv,
1277 struct ethtool_rx_flow_spec *flow)
1278{
1279 struct ethtool_flow_spec_container *temp, *comp;
1280 int ret = 0;
1281
1282 temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1283 if (temp == NULL)
1284 return -ENOMEM;
1285 memcpy(&temp->fs, flow, sizeof(temp->fs));
1286
1287 gfar_invert_masks(&temp->fs);
1288 ret = gfar_check_capability(&temp->fs, priv);
1289 if (ret)
1290 goto clean_mem;
1291 /* Link in the new element at the right @location */
1292 if (list_empty(&priv->rx_list.list)) {
1293 ret = gfar_check_filer_hardware(priv);
1294 if (ret != 0)
1295 goto clean_mem;
1296 list_add(&temp->list, &priv->rx_list.list);
1297 goto process;
1298 } else {
1299 list_for_each_entry(comp, &priv->rx_list.list, list) {
1300 if (comp->fs.location > flow->location) {
1301 list_add_tail(&temp->list, &comp->list);
1302 goto process;
1303 }
1304 if (comp->fs.location == flow->location) {
1305 netdev_err(priv->ndev,
1306 "Rule not added: ID %d not free!\n",
1307 flow->location);
1308 ret = -EBUSY;
1309 goto clean_mem;
1310 }
1311 }
1312 list_add_tail(&temp->list, &priv->rx_list.list);
1313 }
1314
1315process:
1316 priv->rx_list.count++;
1317 ret = gfar_process_filer_changes(priv);
1318 if (ret)
1319 goto clean_list;
1320 return ret;
1321
1322clean_list:
1323 priv->rx_list.count--;
1324 list_del(&temp->list);
1325clean_mem:
1326 kfree(temp);
1327 return ret;
1328}
1329
1330static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1331{
1332 struct ethtool_flow_spec_container *comp;
1333 u32 ret = -EINVAL;
1334
1335 if (list_empty(&priv->rx_list.list))
1336 return ret;
1337
1338 list_for_each_entry(comp, &priv->rx_list.list, list) {
1339 if (comp->fs.location == loc) {
1340 list_del(&comp->list);
1341 kfree(comp);
1342 priv->rx_list.count--;
1343 gfar_process_filer_changes(priv);
1344 ret = 0;
1345 break;
1346 }
1347 }
1348
1349 return ret;
1350}
1351
1352static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1353{
1354 struct ethtool_flow_spec_container *comp;
1355 u32 ret = -EINVAL;
1356
1357 list_for_each_entry(comp, &priv->rx_list.list, list) {
1358 if (comp->fs.location == cmd->fs.location) {
1359 memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1360 gfar_invert_masks(&cmd->fs);
1361 ret = 0;
1362 break;
1363 }
1364 }
1365
1366 return ret;
1367}
1368
1369static int gfar_get_cls_all(struct gfar_private *priv,
1370 struct ethtool_rxnfc *cmd, u32 *rule_locs)
1371{
1372 struct ethtool_flow_spec_container *comp;
1373 u32 i = 0;
1374
1375 list_for_each_entry(comp, &priv->rx_list.list, list) {
1376 if (i == cmd->rule_cnt)
1377 return -EMSGSIZE;
1378 rule_locs[i] = comp->fs.location;
1379 i++;
1380 }
1381
1382 cmd->data = MAX_FILER_IDX;
1383 cmd->rule_cnt = i;
1384
1385 return 0;
1386}
1387
1388static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1389{
1390 struct gfar_private *priv = netdev_priv(dev);
1391 int ret = 0;
1392
1393 if (test_bit(GFAR_RESETTING, &priv->state))
1394 return -EBUSY;
1395
1396 mutex_lock(&priv->rx_queue_access);
1397
1398 switch (cmd->cmd) {
1399 case ETHTOOL_SRXFH:
1400 ret = gfar_set_hash_opts(priv, cmd);
1401 break;
1402 case ETHTOOL_SRXCLSRLINS:
1403 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1404 cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1405 cmd->fs.location >= MAX_FILER_IDX) {
1406 ret = -EINVAL;
1407 break;
1408 }
1409 ret = gfar_add_cls(priv, &cmd->fs);
1410 break;
1411 case ETHTOOL_SRXCLSRLDEL:
1412 ret = gfar_del_cls(priv, cmd->fs.location);
1413 break;
1414 default:
1415 ret = -EINVAL;
1416 }
1417
1418 mutex_unlock(&priv->rx_queue_access);
1419
1420 return ret;
1421}
1422
1423static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1424 u32 *rule_locs)
1425{
1426 struct gfar_private *priv = netdev_priv(dev);
1427 int ret = 0;
1428
1429 switch (cmd->cmd) {
1430 case ETHTOOL_GRXRINGS:
1431 cmd->data = priv->num_rx_queues;
1432 break;
1433 case ETHTOOL_GRXCLSRLCNT:
1434 cmd->rule_cnt = priv->rx_list.count;
1435 break;
1436 case ETHTOOL_GRXCLSRULE:
1437 ret = gfar_get_cls(priv, cmd);
1438 break;
1439 case ETHTOOL_GRXCLSRLALL:
1440 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1441 break;
1442 default:
1443 ret = -EINVAL;
1444 break;
1445 }
1446
1447 return ret;
1448}
1449
1450static int gfar_get_ts_info(struct net_device *dev,
1451 struct ethtool_ts_info *info)
1452{
1453 struct gfar_private *priv = netdev_priv(dev);
1454 struct platform_device *ptp_dev;
1455 struct device_node *ptp_node;
1456 struct ptp_qoriq *ptp = NULL;
1457
1458 info->phc_index = -1;
1459
1460 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1461 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1462 SOF_TIMESTAMPING_TX_SOFTWARE |
1463 SOF_TIMESTAMPING_SOFTWARE;
1464 return 0;
1465 }
1466
1467 ptp_node = of_find_compatible_node(NULL, NULL, "fsl,etsec-ptp");
1468 if (ptp_node) {
1469 ptp_dev = of_find_device_by_node(ptp_node);
1470 of_node_put(ptp_node);
1471 if (ptp_dev)
1472 ptp = platform_get_drvdata(ptp_dev);
1473 }
1474
1475 if (ptp)
1476 info->phc_index = ptp->phc_index;
1477
1478 info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1479 SOF_TIMESTAMPING_RX_HARDWARE |
1480 SOF_TIMESTAMPING_RAW_HARDWARE |
1481 SOF_TIMESTAMPING_RX_SOFTWARE |
1482 SOF_TIMESTAMPING_TX_SOFTWARE |
1483 SOF_TIMESTAMPING_SOFTWARE;
1484 info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1485 (1 << HWTSTAMP_TX_ON);
1486 info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1487 (1 << HWTSTAMP_FILTER_ALL);
1488 return 0;
1489}
1490
1491const struct ethtool_ops gfar_ethtool_ops = {
1492 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1493 ETHTOOL_COALESCE_MAX_FRAMES,
1494 .get_drvinfo = gfar_gdrvinfo,
1495 .get_regs_len = gfar_reglen,
1496 .get_regs = gfar_get_regs,
1497 .get_link = ethtool_op_get_link,
1498 .get_coalesce = gfar_gcoalesce,
1499 .set_coalesce = gfar_scoalesce,
1500 .get_ringparam = gfar_gringparam,
1501 .set_ringparam = gfar_sringparam,
1502 .get_pauseparam = gfar_gpauseparam,
1503 .set_pauseparam = gfar_spauseparam,
1504 .get_strings = gfar_gstrings,
1505 .get_sset_count = gfar_sset_count,
1506 .get_ethtool_stats = gfar_fill_stats,
1507 .get_msglevel = gfar_get_msglevel,
1508 .set_msglevel = gfar_set_msglevel,
1509#ifdef CONFIG_PM
1510 .get_wol = gfar_get_wol,
1511 .set_wol = gfar_set_wol,
1512#endif
1513 .set_rxnfc = gfar_set_nfc,
1514 .get_rxnfc = gfar_get_nfc,
1515 .get_ts_info = gfar_get_ts_info,
1516 .get_link_ksettings = phy_ethtool_get_link_ksettings,
1517 .set_link_ksettings = phy_ethtool_set_link_ksettings,
1518};
1// 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 *) ®s->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 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
167 strlcpy(drvinfo->version, gfar_driver_version,
168 sizeof(drvinfo->version));
169 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
170 strlcpy(drvinfo->bus_info, "N/A", sizeof(drvinfo->bus_info));
171}
172
173/* Return the length of the register structure */
174static int gfar_reglen(struct net_device *dev)
175{
176 return sizeof (struct gfar);
177}
178
179/* Return a dump of the GFAR register space */
180static 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 */
194static 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 */
221static 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. */
249static int gfar_gcoalesce(struct net_device *dev,
250 struct ethtool_coalesce *cvals)
251{
252 struct gfar_private *priv = netdev_priv(dev);
253 struct gfar_priv_rx_q *rx_queue = NULL;
254 struct gfar_priv_tx_q *tx_queue = NULL;
255 unsigned long rxtime;
256 unsigned long rxcount;
257 unsigned long txtime;
258 unsigned long txcount;
259
260 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
261 return -EOPNOTSUPP;
262
263 if (!dev->phydev)
264 return -ENODEV;
265
266 rx_queue = priv->rx_queue[0];
267 tx_queue = priv->tx_queue[0];
268
269 rxtime = get_ictt_value(rx_queue->rxic);
270 rxcount = get_icft_value(rx_queue->rxic);
271 txtime = get_ictt_value(tx_queue->txic);
272 txcount = get_icft_value(tx_queue->txic);
273 cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
274 cvals->rx_max_coalesced_frames = rxcount;
275
276 cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
277 cvals->tx_max_coalesced_frames = txcount;
278
279 cvals->use_adaptive_rx_coalesce = 0;
280 cvals->use_adaptive_tx_coalesce = 0;
281
282 cvals->pkt_rate_low = 0;
283 cvals->rx_coalesce_usecs_low = 0;
284 cvals->rx_max_coalesced_frames_low = 0;
285 cvals->tx_coalesce_usecs_low = 0;
286 cvals->tx_max_coalesced_frames_low = 0;
287
288 /* When the packet rate is below pkt_rate_high but above
289 * pkt_rate_low (both measured in packets per second) the
290 * normal {rx,tx}_* coalescing parameters are used.
291 */
292
293 /* When the packet rate is (measured in packets per second)
294 * is above pkt_rate_high, the {rx,tx}_*_high parameters are
295 * used.
296 */
297 cvals->pkt_rate_high = 0;
298 cvals->rx_coalesce_usecs_high = 0;
299 cvals->rx_max_coalesced_frames_high = 0;
300 cvals->tx_coalesce_usecs_high = 0;
301 cvals->tx_max_coalesced_frames_high = 0;
302
303 /* How often to do adaptive coalescing packet rate sampling,
304 * measured in seconds. Must not be zero.
305 */
306 cvals->rate_sample_interval = 0;
307
308 return 0;
309}
310
311/* Change the coalescing values.
312 * Both cvals->*_usecs and cvals->*_frames have to be > 0
313 * in order for coalescing to be active
314 */
315static int gfar_scoalesce(struct net_device *dev,
316 struct ethtool_coalesce *cvals)
317{
318 struct gfar_private *priv = netdev_priv(dev);
319 int i, err = 0;
320
321 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
322 return -EOPNOTSUPP;
323
324 if (!dev->phydev)
325 return -ENODEV;
326
327 /* Check the bounds of the values */
328 if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
329 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
330 GFAR_MAX_COAL_USECS);
331 return -EINVAL;
332 }
333
334 if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
335 netdev_info(dev, "Coalescing is limited to %d frames\n",
336 GFAR_MAX_COAL_FRAMES);
337 return -EINVAL;
338 }
339
340 /* Check the bounds of the values */
341 if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
342 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
343 GFAR_MAX_COAL_USECS);
344 return -EINVAL;
345 }
346
347 if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
348 netdev_info(dev, "Coalescing is limited to %d frames\n",
349 GFAR_MAX_COAL_FRAMES);
350 return -EINVAL;
351 }
352
353 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
354 cpu_relax();
355
356 /* Set up rx coalescing */
357 if ((cvals->rx_coalesce_usecs == 0) ||
358 (cvals->rx_max_coalesced_frames == 0)) {
359 for (i = 0; i < priv->num_rx_queues; i++)
360 priv->rx_queue[i]->rxcoalescing = 0;
361 } else {
362 for (i = 0; i < priv->num_rx_queues; i++)
363 priv->rx_queue[i]->rxcoalescing = 1;
364 }
365
366 for (i = 0; i < priv->num_rx_queues; i++) {
367 priv->rx_queue[i]->rxic = mk_ic_value(
368 cvals->rx_max_coalesced_frames,
369 gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
370 }
371
372 /* Set up tx coalescing */
373 if ((cvals->tx_coalesce_usecs == 0) ||
374 (cvals->tx_max_coalesced_frames == 0)) {
375 for (i = 0; i < priv->num_tx_queues; i++)
376 priv->tx_queue[i]->txcoalescing = 0;
377 } else {
378 for (i = 0; i < priv->num_tx_queues; i++)
379 priv->tx_queue[i]->txcoalescing = 1;
380 }
381
382 for (i = 0; i < priv->num_tx_queues; i++) {
383 priv->tx_queue[i]->txic = mk_ic_value(
384 cvals->tx_max_coalesced_frames,
385 gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
386 }
387
388 if (dev->flags & IFF_UP) {
389 stop_gfar(dev);
390 err = startup_gfar(dev);
391 } else {
392 gfar_mac_reset(priv);
393 }
394
395 clear_bit_unlock(GFAR_RESETTING, &priv->state);
396
397 return err;
398}
399
400/* Fills in rvals with the current ring parameters. Currently,
401 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
402 * jumbo are ignored by the driver */
403static void gfar_gringparam(struct net_device *dev,
404 struct ethtool_ringparam *rvals)
405{
406 struct gfar_private *priv = netdev_priv(dev);
407 struct gfar_priv_tx_q *tx_queue = NULL;
408 struct gfar_priv_rx_q *rx_queue = NULL;
409
410 tx_queue = priv->tx_queue[0];
411 rx_queue = priv->rx_queue[0];
412
413 rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
414 rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
415 rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
416 rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
417
418 /* Values changeable by the user. The valid values are
419 * in the range 1 to the "*_max_pending" counterpart above.
420 */
421 rvals->rx_pending = rx_queue->rx_ring_size;
422 rvals->rx_mini_pending = rx_queue->rx_ring_size;
423 rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
424 rvals->tx_pending = tx_queue->tx_ring_size;
425}
426
427/* Change the current ring parameters, stopping the controller if
428 * necessary so that we don't mess things up while we're in motion.
429 */
430static int gfar_sringparam(struct net_device *dev,
431 struct ethtool_ringparam *rvals)
432{
433 struct gfar_private *priv = netdev_priv(dev);
434 int err = 0, i;
435
436 if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
437 return -EINVAL;
438
439 if (!is_power_of_2(rvals->rx_pending)) {
440 netdev_err(dev, "Ring sizes must be a power of 2\n");
441 return -EINVAL;
442 }
443
444 if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
445 return -EINVAL;
446
447 if (!is_power_of_2(rvals->tx_pending)) {
448 netdev_err(dev, "Ring sizes must be a power of 2\n");
449 return -EINVAL;
450 }
451
452 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
453 cpu_relax();
454
455 if (dev->flags & IFF_UP)
456 stop_gfar(dev);
457
458 /* Change the sizes */
459 for (i = 0; i < priv->num_rx_queues; i++)
460 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
461
462 for (i = 0; i < priv->num_tx_queues; i++)
463 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
464
465 /* Rebuild the rings with the new size */
466 if (dev->flags & IFF_UP)
467 err = startup_gfar(dev);
468
469 clear_bit_unlock(GFAR_RESETTING, &priv->state);
470
471 return err;
472}
473
474static void gfar_gpauseparam(struct net_device *dev,
475 struct ethtool_pauseparam *epause)
476{
477 struct gfar_private *priv = netdev_priv(dev);
478
479 epause->autoneg = !!priv->pause_aneg_en;
480 epause->rx_pause = !!priv->rx_pause_en;
481 epause->tx_pause = !!priv->tx_pause_en;
482}
483
484static int gfar_spauseparam(struct net_device *dev,
485 struct ethtool_pauseparam *epause)
486{
487 struct gfar_private *priv = netdev_priv(dev);
488 struct phy_device *phydev = dev->phydev;
489 struct gfar __iomem *regs = priv->gfargrp[0].regs;
490
491 if (!phydev)
492 return -ENODEV;
493
494 if (!phy_validate_pause(phydev, epause))
495 return -EINVAL;
496
497 priv->rx_pause_en = priv->tx_pause_en = 0;
498 phy_set_asym_pause(phydev, epause->rx_pause, epause->tx_pause);
499 if (epause->rx_pause) {
500 priv->rx_pause_en = 1;
501
502 if (epause->tx_pause) {
503 priv->tx_pause_en = 1;
504 }
505 } else if (epause->tx_pause) {
506 priv->tx_pause_en = 1;
507 }
508
509 if (epause->autoneg)
510 priv->pause_aneg_en = 1;
511 else
512 priv->pause_aneg_en = 0;
513
514 if (!epause->autoneg) {
515 u32 tempval = gfar_read(®s->maccfg1);
516
517 tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
518
519 priv->tx_actual_en = 0;
520 if (priv->tx_pause_en) {
521 priv->tx_actual_en = 1;
522 tempval |= MACCFG1_TX_FLOW;
523 }
524
525 if (priv->rx_pause_en)
526 tempval |= MACCFG1_RX_FLOW;
527 gfar_write(®s->maccfg1, tempval);
528 }
529
530 return 0;
531}
532
533int gfar_set_features(struct net_device *dev, netdev_features_t features)
534{
535 netdev_features_t changed = dev->features ^ features;
536 struct gfar_private *priv = netdev_priv(dev);
537 int err = 0;
538
539 if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
540 NETIF_F_RXCSUM)))
541 return 0;
542
543 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
544 cpu_relax();
545
546 dev->features = features;
547
548 if (dev->flags & IFF_UP) {
549 /* Now we take down the rings to rebuild them */
550 stop_gfar(dev);
551 err = startup_gfar(dev);
552 } else {
553 gfar_mac_reset(priv);
554 }
555
556 clear_bit_unlock(GFAR_RESETTING, &priv->state);
557
558 return err;
559}
560
561static uint32_t gfar_get_msglevel(struct net_device *dev)
562{
563 struct gfar_private *priv = netdev_priv(dev);
564
565 return priv->msg_enable;
566}
567
568static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
569{
570 struct gfar_private *priv = netdev_priv(dev);
571
572 priv->msg_enable = data;
573}
574
575#ifdef CONFIG_PM
576static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
577{
578 struct gfar_private *priv = netdev_priv(dev);
579
580 wol->supported = 0;
581 wol->wolopts = 0;
582
583 if (priv->wol_supported & GFAR_WOL_MAGIC)
584 wol->supported |= WAKE_MAGIC;
585
586 if (priv->wol_supported & GFAR_WOL_FILER_UCAST)
587 wol->supported |= WAKE_UCAST;
588
589 if (priv->wol_opts & GFAR_WOL_MAGIC)
590 wol->wolopts |= WAKE_MAGIC;
591
592 if (priv->wol_opts & GFAR_WOL_FILER_UCAST)
593 wol->wolopts |= WAKE_UCAST;
594}
595
596static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
597{
598 struct gfar_private *priv = netdev_priv(dev);
599 u16 wol_opts = 0;
600 int err;
601
602 if (!priv->wol_supported && wol->wolopts)
603 return -EINVAL;
604
605 if (wol->wolopts & ~(WAKE_MAGIC | WAKE_UCAST))
606 return -EINVAL;
607
608 if (wol->wolopts & WAKE_MAGIC) {
609 wol_opts |= GFAR_WOL_MAGIC;
610 } else {
611 if (wol->wolopts & WAKE_UCAST)
612 wol_opts |= GFAR_WOL_FILER_UCAST;
613 }
614
615 wol_opts &= priv->wol_supported;
616 priv->wol_opts = 0;
617
618 err = device_set_wakeup_enable(priv->dev, wol_opts);
619 if (err)
620 return err;
621
622 priv->wol_opts = wol_opts;
623
624 return 0;
625}
626#endif
627
628static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
629{
630 u32 fcr = 0x0, fpr = FPR_FILER_MASK;
631
632 if (ethflow & RXH_L2DA) {
633 fcr = RQFCR_PID_DAH | RQFCR_CMP_NOMATCH |
634 RQFCR_HASH | 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 fcr = RQFCR_PID_DAL | RQFCR_CMP_NOMATCH |
641 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
642 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
643 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
644 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
645 priv->cur_filer_idx = priv->cur_filer_idx - 1;
646 }
647
648 if (ethflow & RXH_VLAN) {
649 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
650 RQFCR_AND | RQFCR_HASHTBL_0;
651 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
652 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
653 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
654 priv->cur_filer_idx = priv->cur_filer_idx - 1;
655 }
656
657 if (ethflow & RXH_IP_SRC) {
658 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
659 RQFCR_AND | RQFCR_HASHTBL_0;
660 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
661 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
662 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
663 priv->cur_filer_idx = priv->cur_filer_idx - 1;
664 }
665
666 if (ethflow & (RXH_IP_DST)) {
667 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
668 RQFCR_AND | RQFCR_HASHTBL_0;
669 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
670 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
671 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
672 priv->cur_filer_idx = priv->cur_filer_idx - 1;
673 }
674
675 if (ethflow & RXH_L3_PROTO) {
676 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
677 RQFCR_AND | RQFCR_HASHTBL_0;
678 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
679 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
680 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
681 priv->cur_filer_idx = priv->cur_filer_idx - 1;
682 }
683
684 if (ethflow & RXH_L4_B_0_1) {
685 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
686 RQFCR_AND | RQFCR_HASHTBL_0;
687 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
688 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
689 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
690 priv->cur_filer_idx = priv->cur_filer_idx - 1;
691 }
692
693 if (ethflow & RXH_L4_B_2_3) {
694 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
695 RQFCR_AND | RQFCR_HASHTBL_0;
696 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
697 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
698 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
699 priv->cur_filer_idx = priv->cur_filer_idx - 1;
700 }
701}
702
703static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
704 u64 class)
705{
706 unsigned int cmp_rqfpr;
707 unsigned int *local_rqfpr;
708 unsigned int *local_rqfcr;
709 int i = 0x0, k = 0x0;
710 int j = MAX_FILER_IDX, l = 0x0;
711 int ret = 1;
712
713 local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
714 GFP_KERNEL);
715 local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
716 GFP_KERNEL);
717 if (!local_rqfpr || !local_rqfcr) {
718 ret = 0;
719 goto err;
720 }
721
722 switch (class) {
723 case TCP_V4_FLOW:
724 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
725 break;
726 case UDP_V4_FLOW:
727 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
728 break;
729 case TCP_V6_FLOW:
730 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
731 break;
732 case UDP_V6_FLOW:
733 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
734 break;
735 default:
736 netdev_err(priv->ndev,
737 "Right now this class is not supported\n");
738 ret = 0;
739 goto err;
740 }
741
742 for (i = 0; i < MAX_FILER_IDX + 1; i++) {
743 local_rqfpr[j] = priv->ftp_rqfpr[i];
744 local_rqfcr[j] = priv->ftp_rqfcr[i];
745 j--;
746 if ((priv->ftp_rqfcr[i] ==
747 (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
748 (priv->ftp_rqfpr[i] == cmp_rqfpr))
749 break;
750 }
751
752 if (i == MAX_FILER_IDX + 1) {
753 netdev_err(priv->ndev,
754 "No parse rule found, can't create hash rules\n");
755 ret = 0;
756 goto err;
757 }
758
759 /* If a match was found, then it begins the starting of a cluster rule
760 * if it was already programmed, we need to overwrite these rules
761 */
762 for (l = i+1; l < MAX_FILER_IDX; l++) {
763 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
764 !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
765 priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
766 RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
767 priv->ftp_rqfpr[l] = FPR_FILER_MASK;
768 gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
769 priv->ftp_rqfpr[l]);
770 break;
771 }
772
773 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
774 (priv->ftp_rqfcr[l] & RQFCR_AND))
775 continue;
776 else {
777 local_rqfpr[j] = priv->ftp_rqfpr[l];
778 local_rqfcr[j] = priv->ftp_rqfcr[l];
779 j--;
780 }
781 }
782
783 priv->cur_filer_idx = l - 1;
784
785 /* hash rules */
786 ethflow_to_filer_rules(priv, ethflow);
787
788 /* Write back the popped out rules again */
789 for (k = j+1; k < MAX_FILER_IDX; k++) {
790 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
791 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
792 gfar_write_filer(priv, priv->cur_filer_idx,
793 local_rqfcr[k], local_rqfpr[k]);
794 if (!priv->cur_filer_idx)
795 break;
796 priv->cur_filer_idx = priv->cur_filer_idx - 1;
797 }
798
799err:
800 kfree(local_rqfcr);
801 kfree(local_rqfpr);
802 return ret;
803}
804
805static int gfar_set_hash_opts(struct gfar_private *priv,
806 struct ethtool_rxnfc *cmd)
807{
808 /* write the filer rules here */
809 if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
810 return -EINVAL;
811
812 return 0;
813}
814
815static int gfar_check_filer_hardware(struct gfar_private *priv)
816{
817 struct gfar __iomem *regs = priv->gfargrp[0].regs;
818 u32 i;
819
820 /* Check if we are in FIFO mode */
821 i = gfar_read(®s->ecntrl);
822 i &= ECNTRL_FIFM;
823 if (i == ECNTRL_FIFM) {
824 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
825 i = gfar_read(®s->rctrl);
826 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
827 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
828 netdev_info(priv->ndev,
829 "Receive Queue Filtering enabled\n");
830 } else {
831 netdev_warn(priv->ndev,
832 "Receive Queue Filtering disabled\n");
833 return -EOPNOTSUPP;
834 }
835 }
836 /* Or in standard mode */
837 else {
838 i = gfar_read(®s->rctrl);
839 i &= RCTRL_PRSDEP_MASK;
840 if (i == RCTRL_PRSDEP_MASK) {
841 netdev_info(priv->ndev,
842 "Receive Queue Filtering enabled\n");
843 } else {
844 netdev_warn(priv->ndev,
845 "Receive Queue Filtering disabled\n");
846 return -EOPNOTSUPP;
847 }
848 }
849
850 /* Sets the properties for arbitrary filer rule
851 * to the first 4 Layer 4 Bytes
852 */
853 gfar_write(®s->rbifx, 0xC0C1C2C3);
854 return 0;
855}
856
857/* Write a mask to filer cache */
858static void gfar_set_mask(u32 mask, struct filer_table *tab)
859{
860 tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
861 tab->fe[tab->index].prop = mask;
862 tab->index++;
863}
864
865/* Sets parse bits (e.g. IP or TCP) */
866static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
867{
868 gfar_set_mask(mask, tab);
869 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
870 RQFCR_AND;
871 tab->fe[tab->index].prop = value;
872 tab->index++;
873}
874
875static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
876 struct filer_table *tab)
877{
878 gfar_set_mask(mask, tab);
879 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
880 tab->fe[tab->index].prop = value;
881 tab->index++;
882}
883
884/* For setting a tuple of value and mask of type flag
885 * Example:
886 * IP-Src = 10.0.0.0/255.0.0.0
887 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
888 *
889 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
890 * For a don't care mask it gives us a 0
891 *
892 * The check if don't care and the mask adjustment if mask=0 is done for VLAN
893 * and MAC stuff on an upper level (due to missing information on this level).
894 * For these guys we can discard them if they are value=0 and mask=0.
895 *
896 * Further the all masks are one-padded for better hardware efficiency.
897 */
898static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
899 struct filer_table *tab)
900{
901 switch (flag) {
902 /* 3bit */
903 case RQFCR_PID_PRI:
904 if (!(value | mask))
905 return;
906 mask |= RQFCR_PID_PRI_MASK;
907 break;
908 /* 8bit */
909 case RQFCR_PID_L4P:
910 case RQFCR_PID_TOS:
911 if (!~(mask | RQFCR_PID_L4P_MASK))
912 return;
913 if (!mask)
914 mask = ~0;
915 else
916 mask |= RQFCR_PID_L4P_MASK;
917 break;
918 /* 12bit */
919 case RQFCR_PID_VID:
920 if (!(value | mask))
921 return;
922 mask |= RQFCR_PID_VID_MASK;
923 break;
924 /* 16bit */
925 case RQFCR_PID_DPT:
926 case RQFCR_PID_SPT:
927 case RQFCR_PID_ETY:
928 if (!~(mask | RQFCR_PID_PORT_MASK))
929 return;
930 if (!mask)
931 mask = ~0;
932 else
933 mask |= RQFCR_PID_PORT_MASK;
934 break;
935 /* 24bit */
936 case RQFCR_PID_DAH:
937 case RQFCR_PID_DAL:
938 case RQFCR_PID_SAH:
939 case RQFCR_PID_SAL:
940 if (!(value | mask))
941 return;
942 mask |= RQFCR_PID_MAC_MASK;
943 break;
944 /* for all real 32bit masks */
945 default:
946 if (!~mask)
947 return;
948 if (!mask)
949 mask = ~0;
950 break;
951 }
952 gfar_set_general_attribute(value, mask, flag, tab);
953}
954
955/* Translates value and mask for UDP, TCP or SCTP */
956static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
957 struct ethtool_tcpip4_spec *mask,
958 struct filer_table *tab)
959{
960 gfar_set_attribute(be32_to_cpu(value->ip4src),
961 be32_to_cpu(mask->ip4src),
962 RQFCR_PID_SIA, tab);
963 gfar_set_attribute(be32_to_cpu(value->ip4dst),
964 be32_to_cpu(mask->ip4dst),
965 RQFCR_PID_DIA, tab);
966 gfar_set_attribute(be16_to_cpu(value->pdst),
967 be16_to_cpu(mask->pdst),
968 RQFCR_PID_DPT, tab);
969 gfar_set_attribute(be16_to_cpu(value->psrc),
970 be16_to_cpu(mask->psrc),
971 RQFCR_PID_SPT, tab);
972 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
973}
974
975/* Translates value and mask for RAW-IP4 */
976static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
977 struct ethtool_usrip4_spec *mask,
978 struct filer_table *tab)
979{
980 gfar_set_attribute(be32_to_cpu(value->ip4src),
981 be32_to_cpu(mask->ip4src),
982 RQFCR_PID_SIA, tab);
983 gfar_set_attribute(be32_to_cpu(value->ip4dst),
984 be32_to_cpu(mask->ip4dst),
985 RQFCR_PID_DIA, tab);
986 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
987 gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
988 gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
989 be32_to_cpu(mask->l4_4_bytes),
990 RQFCR_PID_ARB, tab);
991
992}
993
994/* Translates value and mask for ETHER spec */
995static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
996 struct filer_table *tab)
997{
998 u32 upper_temp_mask = 0;
999 u32 lower_temp_mask = 0;
1000
1001 /* Source address */
1002 if (!is_broadcast_ether_addr(mask->h_source)) {
1003 if (is_zero_ether_addr(mask->h_source)) {
1004 upper_temp_mask = 0xFFFFFFFF;
1005 lower_temp_mask = 0xFFFFFFFF;
1006 } else {
1007 upper_temp_mask = mask->h_source[0] << 16 |
1008 mask->h_source[1] << 8 |
1009 mask->h_source[2];
1010 lower_temp_mask = mask->h_source[3] << 16 |
1011 mask->h_source[4] << 8 |
1012 mask->h_source[5];
1013 }
1014 /* Upper 24bit */
1015 gfar_set_attribute(value->h_source[0] << 16 |
1016 value->h_source[1] << 8 |
1017 value->h_source[2],
1018 upper_temp_mask, RQFCR_PID_SAH, tab);
1019 /* And the same for the lower part */
1020 gfar_set_attribute(value->h_source[3] << 16 |
1021 value->h_source[4] << 8 |
1022 value->h_source[5],
1023 lower_temp_mask, RQFCR_PID_SAL, tab);
1024 }
1025 /* Destination address */
1026 if (!is_broadcast_ether_addr(mask->h_dest)) {
1027 /* Special for destination is limited broadcast */
1028 if ((is_broadcast_ether_addr(value->h_dest) &&
1029 is_zero_ether_addr(mask->h_dest))) {
1030 gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1031 } else {
1032 if (is_zero_ether_addr(mask->h_dest)) {
1033 upper_temp_mask = 0xFFFFFFFF;
1034 lower_temp_mask = 0xFFFFFFFF;
1035 } else {
1036 upper_temp_mask = mask->h_dest[0] << 16 |
1037 mask->h_dest[1] << 8 |
1038 mask->h_dest[2];
1039 lower_temp_mask = mask->h_dest[3] << 16 |
1040 mask->h_dest[4] << 8 |
1041 mask->h_dest[5];
1042 }
1043
1044 /* Upper 24bit */
1045 gfar_set_attribute(value->h_dest[0] << 16 |
1046 value->h_dest[1] << 8 |
1047 value->h_dest[2],
1048 upper_temp_mask, RQFCR_PID_DAH, tab);
1049 /* And the same for the lower part */
1050 gfar_set_attribute(value->h_dest[3] << 16 |
1051 value->h_dest[4] << 8 |
1052 value->h_dest[5],
1053 lower_temp_mask, RQFCR_PID_DAL, tab);
1054 }
1055 }
1056
1057 gfar_set_attribute(be16_to_cpu(value->h_proto),
1058 be16_to_cpu(mask->h_proto),
1059 RQFCR_PID_ETY, tab);
1060}
1061
1062static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1063{
1064 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1065}
1066
1067static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1068{
1069 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1070}
1071
1072static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1073{
1074 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1075}
1076
1077static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1078{
1079 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1080}
1081
1082static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1083{
1084 return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1085 VLAN_PRIO_SHIFT;
1086}
1087
1088static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1089{
1090 return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1091 VLAN_PRIO_SHIFT;
1092}
1093
1094/* Convert a rule to binary filter format of gianfar */
1095static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1096 struct filer_table *tab)
1097{
1098 u32 vlan = 0, vlan_mask = 0;
1099 u32 id = 0, id_mask = 0;
1100 u32 cfi = 0, cfi_mask = 0;
1101 u32 prio = 0, prio_mask = 0;
1102 u32 old_index = tab->index;
1103
1104 /* Check if vlan is wanted */
1105 if ((rule->flow_type & FLOW_EXT) &&
1106 (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1107 if (!rule->m_ext.vlan_tci)
1108 rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1109
1110 vlan = RQFPR_VLN;
1111 vlan_mask = RQFPR_VLN;
1112
1113 /* Separate the fields */
1114 id = vlan_tci_vid(rule);
1115 id_mask = vlan_tci_vidm(rule);
1116 cfi = vlan_tci_cfi(rule);
1117 cfi_mask = vlan_tci_cfim(rule);
1118 prio = vlan_tci_prio(rule);
1119 prio_mask = vlan_tci_priom(rule);
1120
1121 if (cfi_mask) {
1122 if (cfi)
1123 vlan |= RQFPR_CFI;
1124 vlan_mask |= RQFPR_CFI;
1125 }
1126 }
1127
1128 switch (rule->flow_type & ~FLOW_EXT) {
1129 case TCP_V4_FLOW:
1130 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1131 RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1132 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1133 &rule->m_u.tcp_ip4_spec, tab);
1134 break;
1135 case UDP_V4_FLOW:
1136 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1137 RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1138 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1139 &rule->m_u.udp_ip4_spec, tab);
1140 break;
1141 case SCTP_V4_FLOW:
1142 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1143 tab);
1144 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1145 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1146 (struct ethtool_tcpip4_spec *)&rule->m_u,
1147 tab);
1148 break;
1149 case IP_USER_FLOW:
1150 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1151 tab);
1152 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1153 (struct ethtool_usrip4_spec *) &rule->m_u,
1154 tab);
1155 break;
1156 case ETHER_FLOW:
1157 if (vlan)
1158 gfar_set_parse_bits(vlan, vlan_mask, tab);
1159 gfar_set_ether((struct ethhdr *) &rule->h_u,
1160 (struct ethhdr *) &rule->m_u, tab);
1161 break;
1162 default:
1163 return -1;
1164 }
1165
1166 /* Set the vlan attributes in the end */
1167 if (vlan) {
1168 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1169 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1170 }
1171
1172 /* If there has been nothing written till now, it must be a default */
1173 if (tab->index == old_index) {
1174 gfar_set_mask(0xFFFFFFFF, tab);
1175 tab->fe[tab->index].ctrl = 0x20;
1176 tab->fe[tab->index].prop = 0x0;
1177 tab->index++;
1178 }
1179
1180 /* Remove last AND */
1181 tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1182
1183 /* Specify which queue to use or to drop */
1184 if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1185 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1186 else
1187 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1188
1189 /* Only big enough entries can be clustered */
1190 if (tab->index > (old_index + 2)) {
1191 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1192 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1193 }
1194
1195 /* In rare cases the cache can be full while there is
1196 * free space in hw
1197 */
1198 if (tab->index > MAX_FILER_CACHE_IDX - 1)
1199 return -EBUSY;
1200
1201 return 0;
1202}
1203
1204/* Write the bit-pattern from software's buffer to hardware registers */
1205static int gfar_write_filer_table(struct gfar_private *priv,
1206 struct filer_table *tab)
1207{
1208 u32 i = 0;
1209 if (tab->index > MAX_FILER_IDX - 1)
1210 return -EBUSY;
1211
1212 /* Fill regular entries */
1213 for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
1214 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1215 /* Fill the rest with fall-troughs */
1216 for (; i < MAX_FILER_IDX; i++)
1217 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1218 /* Last entry must be default accept
1219 * because that's what people expect
1220 */
1221 gfar_write_filer(priv, i, 0x20, 0x0);
1222
1223 return 0;
1224}
1225
1226static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1227 struct gfar_private *priv)
1228{
1229
1230 if (flow->flow_type & FLOW_EXT) {
1231 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1232 netdev_warn(priv->ndev,
1233 "User-specific data not supported!\n");
1234 if (~flow->m_ext.vlan_etype)
1235 netdev_warn(priv->ndev,
1236 "VLAN-etype not supported!\n");
1237 }
1238 if (flow->flow_type == IP_USER_FLOW)
1239 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1240 netdev_warn(priv->ndev,
1241 "IP-Version differing from IPv4 not supported!\n");
1242
1243 return 0;
1244}
1245
1246static int gfar_process_filer_changes(struct gfar_private *priv)
1247{
1248 struct ethtool_flow_spec_container *j;
1249 struct filer_table *tab;
1250 s32 ret = 0;
1251
1252 /* So index is set to zero, too! */
1253 tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1254 if (tab == NULL)
1255 return -ENOMEM;
1256
1257 /* Now convert the existing filer data from flow_spec into
1258 * filer tables binary format
1259 */
1260 list_for_each_entry(j, &priv->rx_list.list, list) {
1261 ret = gfar_convert_to_filer(&j->fs, tab);
1262 if (ret == -EBUSY) {
1263 netdev_err(priv->ndev,
1264 "Rule not added: No free space!\n");
1265 goto end;
1266 }
1267 if (ret == -1) {
1268 netdev_err(priv->ndev,
1269 "Rule not added: Unsupported Flow-type!\n");
1270 goto end;
1271 }
1272 }
1273
1274 /* Write everything to hardware */
1275 ret = gfar_write_filer_table(priv, tab);
1276 if (ret == -EBUSY) {
1277 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1278 goto end;
1279 }
1280
1281end:
1282 kfree(tab);
1283 return ret;
1284}
1285
1286static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1287{
1288 u32 i = 0;
1289
1290 for (i = 0; i < sizeof(flow->m_u); i++)
1291 flow->m_u.hdata[i] ^= 0xFF;
1292
1293 flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1294 flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1295 flow->m_ext.data[0] ^= cpu_to_be32(~0);
1296 flow->m_ext.data[1] ^= cpu_to_be32(~0);
1297}
1298
1299static int gfar_add_cls(struct gfar_private *priv,
1300 struct ethtool_rx_flow_spec *flow)
1301{
1302 struct ethtool_flow_spec_container *temp, *comp;
1303 int ret = 0;
1304
1305 temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1306 if (temp == NULL)
1307 return -ENOMEM;
1308 memcpy(&temp->fs, flow, sizeof(temp->fs));
1309
1310 gfar_invert_masks(&temp->fs);
1311 ret = gfar_check_capability(&temp->fs, priv);
1312 if (ret)
1313 goto clean_mem;
1314 /* Link in the new element at the right @location */
1315 if (list_empty(&priv->rx_list.list)) {
1316 ret = gfar_check_filer_hardware(priv);
1317 if (ret != 0)
1318 goto clean_mem;
1319 list_add(&temp->list, &priv->rx_list.list);
1320 goto process;
1321 } else {
1322 list_for_each_entry(comp, &priv->rx_list.list, list) {
1323 if (comp->fs.location > flow->location) {
1324 list_add_tail(&temp->list, &comp->list);
1325 goto process;
1326 }
1327 if (comp->fs.location == flow->location) {
1328 netdev_err(priv->ndev,
1329 "Rule not added: ID %d not free!\n",
1330 flow->location);
1331 ret = -EBUSY;
1332 goto clean_mem;
1333 }
1334 }
1335 list_add_tail(&temp->list, &priv->rx_list.list);
1336 }
1337
1338process:
1339 priv->rx_list.count++;
1340 ret = gfar_process_filer_changes(priv);
1341 if (ret)
1342 goto clean_list;
1343 return ret;
1344
1345clean_list:
1346 priv->rx_list.count--;
1347 list_del(&temp->list);
1348clean_mem:
1349 kfree(temp);
1350 return ret;
1351}
1352
1353static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1354{
1355 struct ethtool_flow_spec_container *comp;
1356 u32 ret = -EINVAL;
1357
1358 if (list_empty(&priv->rx_list.list))
1359 return ret;
1360
1361 list_for_each_entry(comp, &priv->rx_list.list, list) {
1362 if (comp->fs.location == loc) {
1363 list_del(&comp->list);
1364 kfree(comp);
1365 priv->rx_list.count--;
1366 gfar_process_filer_changes(priv);
1367 ret = 0;
1368 break;
1369 }
1370 }
1371
1372 return ret;
1373}
1374
1375static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1376{
1377 struct ethtool_flow_spec_container *comp;
1378 u32 ret = -EINVAL;
1379
1380 list_for_each_entry(comp, &priv->rx_list.list, list) {
1381 if (comp->fs.location == cmd->fs.location) {
1382 memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1383 gfar_invert_masks(&cmd->fs);
1384 ret = 0;
1385 break;
1386 }
1387 }
1388
1389 return ret;
1390}
1391
1392static int gfar_get_cls_all(struct gfar_private *priv,
1393 struct ethtool_rxnfc *cmd, u32 *rule_locs)
1394{
1395 struct ethtool_flow_spec_container *comp;
1396 u32 i = 0;
1397
1398 list_for_each_entry(comp, &priv->rx_list.list, list) {
1399 if (i == cmd->rule_cnt)
1400 return -EMSGSIZE;
1401 rule_locs[i] = comp->fs.location;
1402 i++;
1403 }
1404
1405 cmd->data = MAX_FILER_IDX;
1406 cmd->rule_cnt = i;
1407
1408 return 0;
1409}
1410
1411static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1412{
1413 struct gfar_private *priv = netdev_priv(dev);
1414 int ret = 0;
1415
1416 if (test_bit(GFAR_RESETTING, &priv->state))
1417 return -EBUSY;
1418
1419 mutex_lock(&priv->rx_queue_access);
1420
1421 switch (cmd->cmd) {
1422 case ETHTOOL_SRXFH:
1423 ret = gfar_set_hash_opts(priv, cmd);
1424 break;
1425 case ETHTOOL_SRXCLSRLINS:
1426 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1427 cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1428 cmd->fs.location >= MAX_FILER_IDX) {
1429 ret = -EINVAL;
1430 break;
1431 }
1432 ret = gfar_add_cls(priv, &cmd->fs);
1433 break;
1434 case ETHTOOL_SRXCLSRLDEL:
1435 ret = gfar_del_cls(priv, cmd->fs.location);
1436 break;
1437 default:
1438 ret = -EINVAL;
1439 }
1440
1441 mutex_unlock(&priv->rx_queue_access);
1442
1443 return ret;
1444}
1445
1446static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1447 u32 *rule_locs)
1448{
1449 struct gfar_private *priv = netdev_priv(dev);
1450 int ret = 0;
1451
1452 switch (cmd->cmd) {
1453 case ETHTOOL_GRXRINGS:
1454 cmd->data = priv->num_rx_queues;
1455 break;
1456 case ETHTOOL_GRXCLSRLCNT:
1457 cmd->rule_cnt = priv->rx_list.count;
1458 break;
1459 case ETHTOOL_GRXCLSRULE:
1460 ret = gfar_get_cls(priv, cmd);
1461 break;
1462 case ETHTOOL_GRXCLSRLALL:
1463 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1464 break;
1465 default:
1466 ret = -EINVAL;
1467 break;
1468 }
1469
1470 return ret;
1471}
1472
1473static int gfar_get_ts_info(struct net_device *dev,
1474 struct ethtool_ts_info *info)
1475{
1476 struct gfar_private *priv = netdev_priv(dev);
1477 struct platform_device *ptp_dev;
1478 struct device_node *ptp_node;
1479 struct ptp_qoriq *ptp = NULL;
1480
1481 info->phc_index = -1;
1482
1483 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1484 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1485 SOF_TIMESTAMPING_SOFTWARE;
1486 return 0;
1487 }
1488
1489 ptp_node = of_find_compatible_node(NULL, NULL, "fsl,etsec-ptp");
1490 if (ptp_node) {
1491 ptp_dev = of_find_device_by_node(ptp_node);
1492 if (ptp_dev)
1493 ptp = platform_get_drvdata(ptp_dev);
1494 }
1495
1496 if (ptp)
1497 info->phc_index = ptp->phc_index;
1498
1499 info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1500 SOF_TIMESTAMPING_RX_HARDWARE |
1501 SOF_TIMESTAMPING_RAW_HARDWARE;
1502 info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1503 (1 << HWTSTAMP_TX_ON);
1504 info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1505 (1 << HWTSTAMP_FILTER_ALL);
1506 return 0;
1507}
1508
1509const struct ethtool_ops gfar_ethtool_ops = {
1510 .get_drvinfo = gfar_gdrvinfo,
1511 .get_regs_len = gfar_reglen,
1512 .get_regs = gfar_get_regs,
1513 .get_link = ethtool_op_get_link,
1514 .get_coalesce = gfar_gcoalesce,
1515 .set_coalesce = gfar_scoalesce,
1516 .get_ringparam = gfar_gringparam,
1517 .set_ringparam = gfar_sringparam,
1518 .get_pauseparam = gfar_gpauseparam,
1519 .set_pauseparam = gfar_spauseparam,
1520 .get_strings = gfar_gstrings,
1521 .get_sset_count = gfar_sset_count,
1522 .get_ethtool_stats = gfar_fill_stats,
1523 .get_msglevel = gfar_get_msglevel,
1524 .set_msglevel = gfar_set_msglevel,
1525#ifdef CONFIG_PM
1526 .get_wol = gfar_get_wol,
1527 .set_wol = gfar_set_wol,
1528#endif
1529 .set_rxnfc = gfar_set_nfc,
1530 .get_rxnfc = gfar_get_nfc,
1531 .get_ts_info = gfar_get_ts_info,
1532 .get_link_ksettings = phy_ethtool_get_link_ksettings,
1533 .set_link_ksettings = phy_ethtool_set_link_ksettings,
1534};