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net: vlan: rename NETIF_F_HW_VLAN_* feature flags to NETIF_F_HW_VLAN_CTAG_*
[deliverable/linux.git] / drivers / net / ethernet / freescale / gianfar_ethtool.c
1 /*
2 * drivers/net/ethernet/freescale/gianfar_ethtool.c
3 *
4 * Gianfar Ethernet Driver
5 * Ethtool support for Gianfar Enet
6 * Based on e1000 ethtool support
7 *
8 * Author: Andy Fleming
9 * Maintainer: Kumar Gala
10 * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
11 *
12 * Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc.
13 *
14 * This software may be used and distributed according to
15 * the terms of the GNU Public License, Version 2, incorporated herein
16 * by reference.
17 */
18
19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
20
21 #include <linux/kernel.h>
22 #include <linux/string.h>
23 #include <linux/errno.h>
24 #include <linux/interrupt.h>
25 #include <linux/init.h>
26 #include <linux/delay.h>
27 #include <linux/netdevice.h>
28 #include <linux/etherdevice.h>
29 #include <linux/net_tstamp.h>
30 #include <linux/skbuff.h>
31 #include <linux/spinlock.h>
32 #include <linux/mm.h>
33
34 #include <asm/io.h>
35 #include <asm/irq.h>
36 #include <asm/uaccess.h>
37 #include <linux/module.h>
38 #include <linux/crc32.h>
39 #include <asm/types.h>
40 #include <linux/ethtool.h>
41 #include <linux/mii.h>
42 #include <linux/phy.h>
43 #include <linux/sort.h>
44 #include <linux/if_vlan.h>
45
46 #include "gianfar.h"
47
48 extern void gfar_start(struct net_device *dev);
49 extern int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue,
50 int rx_work_limit);
51
52 #define GFAR_MAX_COAL_USECS 0xffff
53 #define GFAR_MAX_COAL_FRAMES 0xff
54 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
55 u64 *buf);
56 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
57 static int gfar_gcoalesce(struct net_device *dev,
58 struct ethtool_coalesce *cvals);
59 static int gfar_scoalesce(struct net_device *dev,
60 struct ethtool_coalesce *cvals);
61 static void gfar_gringparam(struct net_device *dev,
62 struct ethtool_ringparam *rvals);
63 static int gfar_sringparam(struct net_device *dev,
64 struct ethtool_ringparam *rvals);
65 static void gfar_gdrvinfo(struct net_device *dev,
66 struct ethtool_drvinfo *drvinfo);
67
68 static const char stat_gstrings[][ETH_GSTRING_LEN] = {
69 "rx-large-frame-errors",
70 "rx-short-frame-errors",
71 "rx-non-octet-errors",
72 "rx-crc-errors",
73 "rx-overrun-errors",
74 "rx-busy-errors",
75 "rx-babbling-errors",
76 "rx-truncated-frames",
77 "ethernet-bus-error",
78 "tx-babbling-errors",
79 "tx-underrun-errors",
80 "rx-skb-missing-errors",
81 "tx-timeout-errors",
82 "tx-rx-64-frames",
83 "tx-rx-65-127-frames",
84 "tx-rx-128-255-frames",
85 "tx-rx-256-511-frames",
86 "tx-rx-512-1023-frames",
87 "tx-rx-1024-1518-frames",
88 "tx-rx-1519-1522-good-vlan",
89 "rx-bytes",
90 "rx-packets",
91 "rx-fcs-errors",
92 "receive-multicast-packet",
93 "receive-broadcast-packet",
94 "rx-control-frame-packets",
95 "rx-pause-frame-packets",
96 "rx-unknown-op-code",
97 "rx-alignment-error",
98 "rx-frame-length-error",
99 "rx-code-error",
100 "rx-carrier-sense-error",
101 "rx-undersize-packets",
102 "rx-oversize-packets",
103 "rx-fragmented-frames",
104 "rx-jabber-frames",
105 "rx-dropped-frames",
106 "tx-byte-counter",
107 "tx-packets",
108 "tx-multicast-packets",
109 "tx-broadcast-packets",
110 "tx-pause-control-frames",
111 "tx-deferral-packets",
112 "tx-excessive-deferral-packets",
113 "tx-single-collision-packets",
114 "tx-multiple-collision-packets",
115 "tx-late-collision-packets",
116 "tx-excessive-collision-packets",
117 "tx-total-collision",
118 "reserved",
119 "tx-dropped-frames",
120 "tx-jabber-frames",
121 "tx-fcs-errors",
122 "tx-control-frames",
123 "tx-oversize-frames",
124 "tx-undersize-frames",
125 "tx-fragmented-frames",
126 };
127
128 /* Fill in a buffer with the strings which correspond to the
129 * stats */
130 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
131 {
132 struct gfar_private *priv = netdev_priv(dev);
133
134 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
135 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
136 else
137 memcpy(buf, stat_gstrings,
138 GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
139 }
140
141 /* Fill in an array of 64-bit statistics from various sources.
142 * This array will be appended to the end of the ethtool_stats
143 * structure, and returned to user space
144 */
145 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
146 u64 *buf)
147 {
148 int i;
149 struct gfar_private *priv = netdev_priv(dev);
150 struct gfar __iomem *regs = priv->gfargrp[0].regs;
151 atomic64_t *extra = (atomic64_t *)&priv->extra_stats;
152
153 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
154 buf[i] = atomic64_read(&extra[i]);
155
156 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
157 u32 __iomem *rmon = (u32 __iomem *) &regs->rmon;
158
159 for (; i < GFAR_STATS_LEN; i++, rmon++)
160 buf[i] = (u64) gfar_read(rmon);
161 }
162 }
163
164 static int gfar_sset_count(struct net_device *dev, int sset)
165 {
166 struct gfar_private *priv = netdev_priv(dev);
167
168 switch (sset) {
169 case ETH_SS_STATS:
170 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
171 return GFAR_STATS_LEN;
172 else
173 return GFAR_EXTRA_STATS_LEN;
174 default:
175 return -EOPNOTSUPP;
176 }
177 }
178
179 /* Fills in the drvinfo structure with some basic info */
180 static void gfar_gdrvinfo(struct net_device *dev,
181 struct ethtool_drvinfo *drvinfo)
182 {
183 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
184 strlcpy(drvinfo->version, gfar_driver_version,
185 sizeof(drvinfo->version));
186 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
187 strlcpy(drvinfo->bus_info, "N/A", sizeof(drvinfo->bus_info));
188 drvinfo->regdump_len = 0;
189 drvinfo->eedump_len = 0;
190 }
191
192
193 static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
194 {
195 struct gfar_private *priv = netdev_priv(dev);
196 struct phy_device *phydev = priv->phydev;
197
198 if (NULL == phydev)
199 return -ENODEV;
200
201 return phy_ethtool_sset(phydev, cmd);
202 }
203
204
205 /* Return the current settings in the ethtool_cmd structure */
206 static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
207 {
208 struct gfar_private *priv = netdev_priv(dev);
209 struct phy_device *phydev = priv->phydev;
210 struct gfar_priv_rx_q *rx_queue = NULL;
211 struct gfar_priv_tx_q *tx_queue = NULL;
212
213 if (NULL == phydev)
214 return -ENODEV;
215 tx_queue = priv->tx_queue[0];
216 rx_queue = priv->rx_queue[0];
217
218 /* etsec-1.7 and older versions have only one txic
219 * and rxic regs although they support multiple queues */
220 cmd->maxtxpkt = get_icft_value(tx_queue->txic);
221 cmd->maxrxpkt = get_icft_value(rx_queue->rxic);
222
223 return phy_ethtool_gset(phydev, cmd);
224 }
225
226 /* Return the length of the register structure */
227 static int gfar_reglen(struct net_device *dev)
228 {
229 return sizeof (struct gfar);
230 }
231
232 /* Return a dump of the GFAR register space */
233 static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
234 void *regbuf)
235 {
236 int i;
237 struct gfar_private *priv = netdev_priv(dev);
238 u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
239 u32 *buf = (u32 *) regbuf;
240
241 for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
242 buf[i] = gfar_read(&theregs[i]);
243 }
244
245 /* Convert microseconds to ethernet clock ticks, which changes
246 * depending on what speed the controller is running at */
247 static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
248 unsigned int usecs)
249 {
250 unsigned int count;
251
252 /* The timer is different, depending on the interface speed */
253 switch (priv->phydev->speed) {
254 case SPEED_1000:
255 count = GFAR_GBIT_TIME;
256 break;
257 case SPEED_100:
258 count = GFAR_100_TIME;
259 break;
260 case SPEED_10:
261 default:
262 count = GFAR_10_TIME;
263 break;
264 }
265
266 /* Make sure we return a number greater than 0
267 * if usecs > 0 */
268 return (usecs * 1000 + count - 1) / count;
269 }
270
271 /* Convert ethernet clock ticks to microseconds */
272 static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
273 unsigned int ticks)
274 {
275 unsigned int count;
276
277 /* The timer is different, depending on the interface speed */
278 switch (priv->phydev->speed) {
279 case SPEED_1000:
280 count = GFAR_GBIT_TIME;
281 break;
282 case SPEED_100:
283 count = GFAR_100_TIME;
284 break;
285 case SPEED_10:
286 default:
287 count = GFAR_10_TIME;
288 break;
289 }
290
291 /* Make sure we return a number greater than 0 */
292 /* if ticks is > 0 */
293 return (ticks * count) / 1000;
294 }
295
296 /* Get the coalescing parameters, and put them in the cvals
297 * structure. */
298 static int gfar_gcoalesce(struct net_device *dev,
299 struct ethtool_coalesce *cvals)
300 {
301 struct gfar_private *priv = netdev_priv(dev);
302 struct gfar_priv_rx_q *rx_queue = NULL;
303 struct gfar_priv_tx_q *tx_queue = NULL;
304 unsigned long rxtime;
305 unsigned long rxcount;
306 unsigned long txtime;
307 unsigned long txcount;
308
309 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
310 return -EOPNOTSUPP;
311
312 if (NULL == priv->phydev)
313 return -ENODEV;
314
315 rx_queue = priv->rx_queue[0];
316 tx_queue = priv->tx_queue[0];
317
318 rxtime = get_ictt_value(rx_queue->rxic);
319 rxcount = get_icft_value(rx_queue->rxic);
320 txtime = get_ictt_value(tx_queue->txic);
321 txcount = get_icft_value(tx_queue->txic);
322 cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
323 cvals->rx_max_coalesced_frames = rxcount;
324
325 cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
326 cvals->tx_max_coalesced_frames = txcount;
327
328 cvals->use_adaptive_rx_coalesce = 0;
329 cvals->use_adaptive_tx_coalesce = 0;
330
331 cvals->pkt_rate_low = 0;
332 cvals->rx_coalesce_usecs_low = 0;
333 cvals->rx_max_coalesced_frames_low = 0;
334 cvals->tx_coalesce_usecs_low = 0;
335 cvals->tx_max_coalesced_frames_low = 0;
336
337 /* When the packet rate is below pkt_rate_high but above
338 * pkt_rate_low (both measured in packets per second) the
339 * normal {rx,tx}_* coalescing parameters are used.
340 */
341
342 /* When the packet rate is (measured in packets per second)
343 * is above pkt_rate_high, the {rx,tx}_*_high parameters are
344 * used.
345 */
346 cvals->pkt_rate_high = 0;
347 cvals->rx_coalesce_usecs_high = 0;
348 cvals->rx_max_coalesced_frames_high = 0;
349 cvals->tx_coalesce_usecs_high = 0;
350 cvals->tx_max_coalesced_frames_high = 0;
351
352 /* How often to do adaptive coalescing packet rate sampling,
353 * measured in seconds. Must not be zero.
354 */
355 cvals->rate_sample_interval = 0;
356
357 return 0;
358 }
359
360 /* Change the coalescing values.
361 * Both cvals->*_usecs and cvals->*_frames have to be > 0
362 * in order for coalescing to be active
363 */
364 static int gfar_scoalesce(struct net_device *dev,
365 struct ethtool_coalesce *cvals)
366 {
367 struct gfar_private *priv = netdev_priv(dev);
368 int i = 0;
369
370 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
371 return -EOPNOTSUPP;
372
373 /* Set up rx coalescing */
374 /* As of now, we will enable/disable coalescing for all
375 * queues together in case of eTSEC2, this will be modified
376 * along with the ethtool interface
377 */
378 if ((cvals->rx_coalesce_usecs == 0) ||
379 (cvals->rx_max_coalesced_frames == 0)) {
380 for (i = 0; i < priv->num_rx_queues; i++)
381 priv->rx_queue[i]->rxcoalescing = 0;
382 } else {
383 for (i = 0; i < priv->num_rx_queues; i++)
384 priv->rx_queue[i]->rxcoalescing = 1;
385 }
386
387 if (NULL == priv->phydev)
388 return -ENODEV;
389
390 /* Check the bounds of the values */
391 if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
392 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
393 GFAR_MAX_COAL_USECS);
394 return -EINVAL;
395 }
396
397 if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
398 netdev_info(dev, "Coalescing is limited to %d frames\n",
399 GFAR_MAX_COAL_FRAMES);
400 return -EINVAL;
401 }
402
403 for (i = 0; i < priv->num_rx_queues; i++) {
404 priv->rx_queue[i]->rxic = mk_ic_value(
405 cvals->rx_max_coalesced_frames,
406 gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
407 }
408
409 /* Set up tx coalescing */
410 if ((cvals->tx_coalesce_usecs == 0) ||
411 (cvals->tx_max_coalesced_frames == 0)) {
412 for (i = 0; i < priv->num_tx_queues; i++)
413 priv->tx_queue[i]->txcoalescing = 0;
414 } else {
415 for (i = 0; i < priv->num_tx_queues; i++)
416 priv->tx_queue[i]->txcoalescing = 1;
417 }
418
419 /* Check the bounds of the values */
420 if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
421 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
422 GFAR_MAX_COAL_USECS);
423 return -EINVAL;
424 }
425
426 if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
427 netdev_info(dev, "Coalescing is limited to %d frames\n",
428 GFAR_MAX_COAL_FRAMES);
429 return -EINVAL;
430 }
431
432 for (i = 0; i < priv->num_tx_queues; i++) {
433 priv->tx_queue[i]->txic = mk_ic_value(
434 cvals->tx_max_coalesced_frames,
435 gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
436 }
437
438 gfar_configure_coalescing_all(priv);
439
440 return 0;
441 }
442
443 /* Fills in rvals with the current ring parameters. Currently,
444 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
445 * jumbo are ignored by the driver */
446 static void gfar_gringparam(struct net_device *dev,
447 struct ethtool_ringparam *rvals)
448 {
449 struct gfar_private *priv = netdev_priv(dev);
450 struct gfar_priv_tx_q *tx_queue = NULL;
451 struct gfar_priv_rx_q *rx_queue = NULL;
452
453 tx_queue = priv->tx_queue[0];
454 rx_queue = priv->rx_queue[0];
455
456 rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
457 rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
458 rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
459 rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
460
461 /* Values changeable by the user. The valid values are
462 * in the range 1 to the "*_max_pending" counterpart above.
463 */
464 rvals->rx_pending = rx_queue->rx_ring_size;
465 rvals->rx_mini_pending = rx_queue->rx_ring_size;
466 rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
467 rvals->tx_pending = tx_queue->tx_ring_size;
468 }
469
470 /* Change the current ring parameters, stopping the controller if
471 * necessary so that we don't mess things up while we're in
472 * motion. We wait for the ring to be clean before reallocating
473 * the rings.
474 */
475 static int gfar_sringparam(struct net_device *dev,
476 struct ethtool_ringparam *rvals)
477 {
478 struct gfar_private *priv = netdev_priv(dev);
479 int err = 0, i = 0;
480
481 if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
482 return -EINVAL;
483
484 if (!is_power_of_2(rvals->rx_pending)) {
485 netdev_err(dev, "Ring sizes must be a power of 2\n");
486 return -EINVAL;
487 }
488
489 if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
490 return -EINVAL;
491
492 if (!is_power_of_2(rvals->tx_pending)) {
493 netdev_err(dev, "Ring sizes must be a power of 2\n");
494 return -EINVAL;
495 }
496
497
498 if (dev->flags & IFF_UP) {
499 unsigned long flags;
500
501 /* Halt TX and RX, and process the frames which
502 * have already been received
503 */
504 local_irq_save(flags);
505 lock_tx_qs(priv);
506 lock_rx_qs(priv);
507
508 gfar_halt(dev);
509
510 unlock_rx_qs(priv);
511 unlock_tx_qs(priv);
512 local_irq_restore(flags);
513
514 for (i = 0; i < priv->num_rx_queues; i++)
515 gfar_clean_rx_ring(priv->rx_queue[i],
516 priv->rx_queue[i]->rx_ring_size);
517
518 /* Now we take down the rings to rebuild them */
519 stop_gfar(dev);
520 }
521
522 /* Change the size */
523 for (i = 0; i < priv->num_rx_queues; i++) {
524 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
525 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
526 priv->tx_queue[i]->num_txbdfree =
527 priv->tx_queue[i]->tx_ring_size;
528 }
529
530 /* Rebuild the rings with the new size */
531 if (dev->flags & IFF_UP) {
532 err = startup_gfar(dev);
533 netif_tx_wake_all_queues(dev);
534 }
535 return err;
536 }
537
538 int gfar_set_features(struct net_device *dev, netdev_features_t features)
539 {
540 struct gfar_private *priv = netdev_priv(dev);
541 unsigned long flags;
542 int err = 0, i = 0;
543 netdev_features_t changed = dev->features ^ features;
544
545 if (changed & (NETIF_F_HW_VLAN_CTAG_TX|NETIF_F_HW_VLAN_CTAG_RX))
546 gfar_vlan_mode(dev, features);
547
548 if (!(changed & NETIF_F_RXCSUM))
549 return 0;
550
551 if (dev->flags & IFF_UP) {
552 /* Halt TX and RX, and process the frames which
553 * have already been received
554 */
555 local_irq_save(flags);
556 lock_tx_qs(priv);
557 lock_rx_qs(priv);
558
559 gfar_halt(dev);
560
561 unlock_tx_qs(priv);
562 unlock_rx_qs(priv);
563 local_irq_restore(flags);
564
565 for (i = 0; i < priv->num_rx_queues; i++)
566 gfar_clean_rx_ring(priv->rx_queue[i],
567 priv->rx_queue[i]->rx_ring_size);
568
569 /* Now we take down the rings to rebuild them */
570 stop_gfar(dev);
571
572 dev->features = features;
573
574 err = startup_gfar(dev);
575 netif_tx_wake_all_queues(dev);
576 }
577 return err;
578 }
579
580 static uint32_t gfar_get_msglevel(struct net_device *dev)
581 {
582 struct gfar_private *priv = netdev_priv(dev);
583
584 return priv->msg_enable;
585 }
586
587 static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
588 {
589 struct gfar_private *priv = netdev_priv(dev);
590
591 priv->msg_enable = data;
592 }
593
594 #ifdef CONFIG_PM
595 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
596 {
597 struct gfar_private *priv = netdev_priv(dev);
598
599 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) {
600 wol->supported = WAKE_MAGIC;
601 wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0;
602 } else {
603 wol->supported = wol->wolopts = 0;
604 }
605 }
606
607 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
608 {
609 struct gfar_private *priv = netdev_priv(dev);
610 unsigned long flags;
611
612 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
613 wol->wolopts != 0)
614 return -EINVAL;
615
616 if (wol->wolopts & ~WAKE_MAGIC)
617 return -EINVAL;
618
619 device_set_wakeup_enable(&dev->dev, wol->wolopts & WAKE_MAGIC);
620
621 spin_lock_irqsave(&priv->bflock, flags);
622 priv->wol_en = !!device_may_wakeup(&dev->dev);
623 spin_unlock_irqrestore(&priv->bflock, flags);
624
625 return 0;
626 }
627 #endif
628
629 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
630 {
631 u32 fcr = 0x0, fpr = FPR_FILER_MASK;
632
633 if (ethflow & RXH_L2DA) {
634 fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH |
635 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
636 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
637 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
638 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
639 priv->cur_filer_idx = priv->cur_filer_idx - 1;
640
641 fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
642 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
643 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
644 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
645 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
646 priv->cur_filer_idx = priv->cur_filer_idx - 1;
647 }
648
649 if (ethflow & RXH_VLAN) {
650 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
651 RQFCR_AND | RQFCR_HASHTBL_0;
652 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
653 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
654 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
655 priv->cur_filer_idx = priv->cur_filer_idx - 1;
656 }
657
658 if (ethflow & RXH_IP_SRC) {
659 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
660 RQFCR_AND | RQFCR_HASHTBL_0;
661 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
662 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
663 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
664 priv->cur_filer_idx = priv->cur_filer_idx - 1;
665 }
666
667 if (ethflow & (RXH_IP_DST)) {
668 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
669 RQFCR_AND | RQFCR_HASHTBL_0;
670 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
671 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
672 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
673 priv->cur_filer_idx = priv->cur_filer_idx - 1;
674 }
675
676 if (ethflow & RXH_L3_PROTO) {
677 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
678 RQFCR_AND | RQFCR_HASHTBL_0;
679 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
680 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
681 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
682 priv->cur_filer_idx = priv->cur_filer_idx - 1;
683 }
684
685 if (ethflow & RXH_L4_B_0_1) {
686 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
687 RQFCR_AND | RQFCR_HASHTBL_0;
688 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
689 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
690 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
691 priv->cur_filer_idx = priv->cur_filer_idx - 1;
692 }
693
694 if (ethflow & RXH_L4_B_2_3) {
695 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
696 RQFCR_AND | RQFCR_HASHTBL_0;
697 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
698 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
699 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
700 priv->cur_filer_idx = priv->cur_filer_idx - 1;
701 }
702 }
703
704 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
705 u64 class)
706 {
707 unsigned int last_rule_idx = priv->cur_filer_idx;
708 unsigned int cmp_rqfpr;
709 unsigned int *local_rqfpr;
710 unsigned int *local_rqfcr;
711 int i = 0x0, k = 0x0;
712 int j = MAX_FILER_IDX, l = 0x0;
713 int ret = 1;
714
715 local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
716 GFP_KERNEL);
717 local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
718 GFP_KERNEL);
719 if (!local_rqfpr || !local_rqfcr) {
720 ret = 0;
721 goto err;
722 }
723
724 switch (class) {
725 case TCP_V4_FLOW:
726 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
727 break;
728 case UDP_V4_FLOW:
729 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
730 break;
731 case TCP_V6_FLOW:
732 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
733 break;
734 case UDP_V6_FLOW:
735 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
736 break;
737 default:
738 netdev_err(priv->ndev,
739 "Right now this class is not supported\n");
740 ret = 0;
741 goto err;
742 }
743
744 for (i = 0; i < MAX_FILER_IDX + 1; i++) {
745 local_rqfpr[j] = priv->ftp_rqfpr[i];
746 local_rqfcr[j] = priv->ftp_rqfcr[i];
747 j--;
748 if ((priv->ftp_rqfcr[i] ==
749 (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
750 (priv->ftp_rqfpr[i] == cmp_rqfpr))
751 break;
752 }
753
754 if (i == MAX_FILER_IDX + 1) {
755 netdev_err(priv->ndev,
756 "No parse rule found, can't create hash rules\n");
757 ret = 0;
758 goto err;
759 }
760
761 /* If a match was found, then it begins the starting of a cluster rule
762 * if it was already programmed, we need to overwrite these rules
763 */
764 for (l = i+1; l < MAX_FILER_IDX; l++) {
765 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
766 !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
767 priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
768 RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
769 priv->ftp_rqfpr[l] = FPR_FILER_MASK;
770 gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
771 priv->ftp_rqfpr[l]);
772 break;
773 }
774
775 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
776 (priv->ftp_rqfcr[l] & RQFCR_AND))
777 continue;
778 else {
779 local_rqfpr[j] = priv->ftp_rqfpr[l];
780 local_rqfcr[j] = priv->ftp_rqfcr[l];
781 j--;
782 }
783 }
784
785 priv->cur_filer_idx = l - 1;
786 last_rule_idx = l;
787
788 /* hash rules */
789 ethflow_to_filer_rules(priv, ethflow);
790
791 /* Write back the popped out rules again */
792 for (k = j+1; k < MAX_FILER_IDX; k++) {
793 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
794 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
795 gfar_write_filer(priv, priv->cur_filer_idx,
796 local_rqfcr[k], local_rqfpr[k]);
797 if (!priv->cur_filer_idx)
798 break;
799 priv->cur_filer_idx = priv->cur_filer_idx - 1;
800 }
801
802 err:
803 kfree(local_rqfcr);
804 kfree(local_rqfpr);
805 return ret;
806 }
807
808 static int gfar_set_hash_opts(struct gfar_private *priv,
809 struct ethtool_rxnfc *cmd)
810 {
811 /* write the filer rules here */
812 if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
813 return -EINVAL;
814
815 return 0;
816 }
817
818 static int gfar_check_filer_hardware(struct gfar_private *priv)
819 {
820 struct gfar __iomem *regs = NULL;
821 u32 i;
822
823 regs = priv->gfargrp[0].regs;
824
825 /* Check if we are in FIFO mode */
826 i = gfar_read(&regs->ecntrl);
827 i &= ECNTRL_FIFM;
828 if (i == ECNTRL_FIFM) {
829 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
830 i = gfar_read(&regs->rctrl);
831 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
832 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
833 netdev_info(priv->ndev,
834 "Receive Queue Filtering enabled\n");
835 } else {
836 netdev_warn(priv->ndev,
837 "Receive Queue Filtering disabled\n");
838 return -EOPNOTSUPP;
839 }
840 }
841 /* Or in standard mode */
842 else {
843 i = gfar_read(&regs->rctrl);
844 i &= RCTRL_PRSDEP_MASK;
845 if (i == RCTRL_PRSDEP_MASK) {
846 netdev_info(priv->ndev,
847 "Receive Queue Filtering enabled\n");
848 } else {
849 netdev_warn(priv->ndev,
850 "Receive Queue Filtering disabled\n");
851 return -EOPNOTSUPP;
852 }
853 }
854
855 /* Sets the properties for arbitrary filer rule
856 * to the first 4 Layer 4 Bytes
857 */
858 regs->rbifx = 0xC0C1C2C3;
859 return 0;
860 }
861
862 static int gfar_comp_asc(const void *a, const void *b)
863 {
864 return memcmp(a, b, 4);
865 }
866
867 static int gfar_comp_desc(const void *a, const void *b)
868 {
869 return -memcmp(a, b, 4);
870 }
871
872 static void gfar_swap(void *a, void *b, int size)
873 {
874 u32 *_a = a;
875 u32 *_b = b;
876
877 swap(_a[0], _b[0]);
878 swap(_a[1], _b[1]);
879 swap(_a[2], _b[2]);
880 swap(_a[3], _b[3]);
881 }
882
883 /* Write a mask to filer cache */
884 static void gfar_set_mask(u32 mask, struct filer_table *tab)
885 {
886 tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
887 tab->fe[tab->index].prop = mask;
888 tab->index++;
889 }
890
891 /* Sets parse bits (e.g. IP or TCP) */
892 static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
893 {
894 gfar_set_mask(mask, tab);
895 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
896 RQFCR_AND;
897 tab->fe[tab->index].prop = value;
898 tab->index++;
899 }
900
901 static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
902 struct filer_table *tab)
903 {
904 gfar_set_mask(mask, tab);
905 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
906 tab->fe[tab->index].prop = value;
907 tab->index++;
908 }
909
910 /* For setting a tuple of value and mask of type flag
911 * Example:
912 * IP-Src = 10.0.0.0/255.0.0.0
913 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
914 *
915 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
916 * For a don't care mask it gives us a 0
917 *
918 * The check if don't care and the mask adjustment if mask=0 is done for VLAN
919 * and MAC stuff on an upper level (due to missing information on this level).
920 * For these guys we can discard them if they are value=0 and mask=0.
921 *
922 * Further the all masks are one-padded for better hardware efficiency.
923 */
924 static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
925 struct filer_table *tab)
926 {
927 switch (flag) {
928 /* 3bit */
929 case RQFCR_PID_PRI:
930 if (!(value | mask))
931 return;
932 mask |= RQFCR_PID_PRI_MASK;
933 break;
934 /* 8bit */
935 case RQFCR_PID_L4P:
936 case RQFCR_PID_TOS:
937 if (!~(mask | RQFCR_PID_L4P_MASK))
938 return;
939 if (!mask)
940 mask = ~0;
941 else
942 mask |= RQFCR_PID_L4P_MASK;
943 break;
944 /* 12bit */
945 case RQFCR_PID_VID:
946 if (!(value | mask))
947 return;
948 mask |= RQFCR_PID_VID_MASK;
949 break;
950 /* 16bit */
951 case RQFCR_PID_DPT:
952 case RQFCR_PID_SPT:
953 case RQFCR_PID_ETY:
954 if (!~(mask | RQFCR_PID_PORT_MASK))
955 return;
956 if (!mask)
957 mask = ~0;
958 else
959 mask |= RQFCR_PID_PORT_MASK;
960 break;
961 /* 24bit */
962 case RQFCR_PID_DAH:
963 case RQFCR_PID_DAL:
964 case RQFCR_PID_SAH:
965 case RQFCR_PID_SAL:
966 if (!(value | mask))
967 return;
968 mask |= RQFCR_PID_MAC_MASK;
969 break;
970 /* for all real 32bit masks */
971 default:
972 if (!~mask)
973 return;
974 if (!mask)
975 mask = ~0;
976 break;
977 }
978 gfar_set_general_attribute(value, mask, flag, tab);
979 }
980
981 /* Translates value and mask for UDP, TCP or SCTP */
982 static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
983 struct ethtool_tcpip4_spec *mask,
984 struct filer_table *tab)
985 {
986 gfar_set_attribute(value->ip4src, mask->ip4src, RQFCR_PID_SIA, tab);
987 gfar_set_attribute(value->ip4dst, mask->ip4dst, RQFCR_PID_DIA, tab);
988 gfar_set_attribute(value->pdst, mask->pdst, RQFCR_PID_DPT, tab);
989 gfar_set_attribute(value->psrc, mask->psrc, RQFCR_PID_SPT, tab);
990 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
991 }
992
993 /* Translates value and mask for RAW-IP4 */
994 static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
995 struct ethtool_usrip4_spec *mask,
996 struct filer_table *tab)
997 {
998 gfar_set_attribute(value->ip4src, mask->ip4src, RQFCR_PID_SIA, tab);
999 gfar_set_attribute(value->ip4dst, mask->ip4dst, RQFCR_PID_DIA, tab);
1000 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1001 gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
1002 gfar_set_attribute(value->l4_4_bytes, mask->l4_4_bytes, RQFCR_PID_ARB,
1003 tab);
1004
1005 }
1006
1007 /* Translates value and mask for ETHER spec */
1008 static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
1009 struct filer_table *tab)
1010 {
1011 u32 upper_temp_mask = 0;
1012 u32 lower_temp_mask = 0;
1013
1014 /* Source address */
1015 if (!is_broadcast_ether_addr(mask->h_source)) {
1016 if (is_zero_ether_addr(mask->h_source)) {
1017 upper_temp_mask = 0xFFFFFFFF;
1018 lower_temp_mask = 0xFFFFFFFF;
1019 } else {
1020 upper_temp_mask = mask->h_source[0] << 16 |
1021 mask->h_source[1] << 8 |
1022 mask->h_source[2];
1023 lower_temp_mask = mask->h_source[3] << 16 |
1024 mask->h_source[4] << 8 |
1025 mask->h_source[5];
1026 }
1027 /* Upper 24bit */
1028 gfar_set_attribute(value->h_source[0] << 16 |
1029 value->h_source[1] << 8 |
1030 value->h_source[2],
1031 upper_temp_mask, RQFCR_PID_SAH, tab);
1032 /* And the same for the lower part */
1033 gfar_set_attribute(value->h_source[3] << 16 |
1034 value->h_source[4] << 8 |
1035 value->h_source[5],
1036 lower_temp_mask, RQFCR_PID_SAL, tab);
1037 }
1038 /* Destination address */
1039 if (!is_broadcast_ether_addr(mask->h_dest)) {
1040 /* Special for destination is limited broadcast */
1041 if ((is_broadcast_ether_addr(value->h_dest) &&
1042 is_zero_ether_addr(mask->h_dest))) {
1043 gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1044 } else {
1045 if (is_zero_ether_addr(mask->h_dest)) {
1046 upper_temp_mask = 0xFFFFFFFF;
1047 lower_temp_mask = 0xFFFFFFFF;
1048 } else {
1049 upper_temp_mask = mask->h_dest[0] << 16 |
1050 mask->h_dest[1] << 8 |
1051 mask->h_dest[2];
1052 lower_temp_mask = mask->h_dest[3] << 16 |
1053 mask->h_dest[4] << 8 |
1054 mask->h_dest[5];
1055 }
1056
1057 /* Upper 24bit */
1058 gfar_set_attribute(value->h_dest[0] << 16 |
1059 value->h_dest[1] << 8 |
1060 value->h_dest[2],
1061 upper_temp_mask, RQFCR_PID_DAH, tab);
1062 /* And the same for the lower part */
1063 gfar_set_attribute(value->h_dest[3] << 16 |
1064 value->h_dest[4] << 8 |
1065 value->h_dest[5],
1066 lower_temp_mask, RQFCR_PID_DAL, tab);
1067 }
1068 }
1069
1070 gfar_set_attribute(value->h_proto, mask->h_proto, RQFCR_PID_ETY, tab);
1071 }
1072
1073 /* Convert a rule to binary filter format of gianfar */
1074 static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1075 struct filer_table *tab)
1076 {
1077 u32 vlan = 0, vlan_mask = 0;
1078 u32 id = 0, id_mask = 0;
1079 u32 cfi = 0, cfi_mask = 0;
1080 u32 prio = 0, prio_mask = 0;
1081 u32 old_index = tab->index;
1082
1083 /* Check if vlan is wanted */
1084 if ((rule->flow_type & FLOW_EXT) && (rule->m_ext.vlan_tci != 0xFFFF)) {
1085 if (!rule->m_ext.vlan_tci)
1086 rule->m_ext.vlan_tci = 0xFFFF;
1087
1088 vlan = RQFPR_VLN;
1089 vlan_mask = RQFPR_VLN;
1090
1091 /* Separate the fields */
1092 id = rule->h_ext.vlan_tci & VLAN_VID_MASK;
1093 id_mask = rule->m_ext.vlan_tci & VLAN_VID_MASK;
1094 cfi = rule->h_ext.vlan_tci & VLAN_CFI_MASK;
1095 cfi_mask = rule->m_ext.vlan_tci & VLAN_CFI_MASK;
1096 prio = (rule->h_ext.vlan_tci & VLAN_PRIO_MASK) >>
1097 VLAN_PRIO_SHIFT;
1098 prio_mask = (rule->m_ext.vlan_tci & VLAN_PRIO_MASK) >>
1099 VLAN_PRIO_SHIFT;
1100
1101 if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
1102 vlan |= RQFPR_CFI;
1103 vlan_mask |= RQFPR_CFI;
1104 } else if (cfi != VLAN_TAG_PRESENT &&
1105 cfi_mask == VLAN_TAG_PRESENT) {
1106 vlan_mask |= RQFPR_CFI;
1107 }
1108 }
1109
1110 switch (rule->flow_type & ~FLOW_EXT) {
1111 case TCP_V4_FLOW:
1112 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1113 RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1114 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1115 &rule->m_u.tcp_ip4_spec, tab);
1116 break;
1117 case UDP_V4_FLOW:
1118 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1119 RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1120 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1121 &rule->m_u.udp_ip4_spec, tab);
1122 break;
1123 case SCTP_V4_FLOW:
1124 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1125 tab);
1126 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1127 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1128 (struct ethtool_tcpip4_spec *)&rule->m_u,
1129 tab);
1130 break;
1131 case IP_USER_FLOW:
1132 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1133 tab);
1134 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1135 (struct ethtool_usrip4_spec *) &rule->m_u,
1136 tab);
1137 break;
1138 case ETHER_FLOW:
1139 if (vlan)
1140 gfar_set_parse_bits(vlan, vlan_mask, tab);
1141 gfar_set_ether((struct ethhdr *) &rule->h_u,
1142 (struct ethhdr *) &rule->m_u, tab);
1143 break;
1144 default:
1145 return -1;
1146 }
1147
1148 /* Set the vlan attributes in the end */
1149 if (vlan) {
1150 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1151 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1152 }
1153
1154 /* If there has been nothing written till now, it must be a default */
1155 if (tab->index == old_index) {
1156 gfar_set_mask(0xFFFFFFFF, tab);
1157 tab->fe[tab->index].ctrl = 0x20;
1158 tab->fe[tab->index].prop = 0x0;
1159 tab->index++;
1160 }
1161
1162 /* Remove last AND */
1163 tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1164
1165 /* Specify which queue to use or to drop */
1166 if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1167 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1168 else
1169 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1170
1171 /* Only big enough entries can be clustered */
1172 if (tab->index > (old_index + 2)) {
1173 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1174 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1175 }
1176
1177 /* In rare cases the cache can be full while there is
1178 * free space in hw
1179 */
1180 if (tab->index > MAX_FILER_CACHE_IDX - 1)
1181 return -EBUSY;
1182
1183 return 0;
1184 }
1185
1186 /* Copy size filer entries */
1187 static void gfar_copy_filer_entries(struct gfar_filer_entry dst[0],
1188 struct gfar_filer_entry src[0], s32 size)
1189 {
1190 while (size > 0) {
1191 size--;
1192 dst[size].ctrl = src[size].ctrl;
1193 dst[size].prop = src[size].prop;
1194 }
1195 }
1196
1197 /* Delete the contents of the filer-table between start and end
1198 * and collapse them
1199 */
1200 static int gfar_trim_filer_entries(u32 begin, u32 end, struct filer_table *tab)
1201 {
1202 int length;
1203
1204 if (end > MAX_FILER_CACHE_IDX || end < begin)
1205 return -EINVAL;
1206
1207 end++;
1208 length = end - begin;
1209
1210 /* Copy */
1211 while (end < tab->index) {
1212 tab->fe[begin].ctrl = tab->fe[end].ctrl;
1213 tab->fe[begin++].prop = tab->fe[end++].prop;
1214
1215 }
1216 /* Fill up with don't cares */
1217 while (begin < tab->index) {
1218 tab->fe[begin].ctrl = 0x60;
1219 tab->fe[begin].prop = 0xFFFFFFFF;
1220 begin++;
1221 }
1222
1223 tab->index -= length;
1224 return 0;
1225 }
1226
1227 /* Make space on the wanted location */
1228 static int gfar_expand_filer_entries(u32 begin, u32 length,
1229 struct filer_table *tab)
1230 {
1231 if (length == 0 || length + tab->index > MAX_FILER_CACHE_IDX ||
1232 begin > MAX_FILER_CACHE_IDX)
1233 return -EINVAL;
1234
1235 gfar_copy_filer_entries(&(tab->fe[begin + length]), &(tab->fe[begin]),
1236 tab->index - length + 1);
1237
1238 tab->index += length;
1239 return 0;
1240 }
1241
1242 static int gfar_get_next_cluster_start(int start, struct filer_table *tab)
1243 {
1244 for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
1245 start++) {
1246 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
1247 (RQFCR_AND | RQFCR_CLE))
1248 return start;
1249 }
1250 return -1;
1251 }
1252
1253 static int gfar_get_next_cluster_end(int start, struct filer_table *tab)
1254 {
1255 for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
1256 start++) {
1257 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
1258 (RQFCR_CLE))
1259 return start;
1260 }
1261 return -1;
1262 }
1263
1264 /* Uses hardwares clustering option to reduce
1265 * the number of filer table entries
1266 */
1267 static void gfar_cluster_filer(struct filer_table *tab)
1268 {
1269 s32 i = -1, j, iend, jend;
1270
1271 while ((i = gfar_get_next_cluster_start(++i, tab)) != -1) {
1272 j = i;
1273 while ((j = gfar_get_next_cluster_start(++j, tab)) != -1) {
1274 /* The cluster entries self and the previous one
1275 * (a mask) must be identical!
1276 */
1277 if (tab->fe[i].ctrl != tab->fe[j].ctrl)
1278 break;
1279 if (tab->fe[i].prop != tab->fe[j].prop)
1280 break;
1281 if (tab->fe[i - 1].ctrl != tab->fe[j - 1].ctrl)
1282 break;
1283 if (tab->fe[i - 1].prop != tab->fe[j - 1].prop)
1284 break;
1285 iend = gfar_get_next_cluster_end(i, tab);
1286 jend = gfar_get_next_cluster_end(j, tab);
1287 if (jend == -1 || iend == -1)
1288 break;
1289
1290 /* First we make some free space, where our cluster
1291 * element should be. Then we copy it there and finally
1292 * delete in from its old location.
1293 */
1294 if (gfar_expand_filer_entries(iend, (jend - j), tab) ==
1295 -EINVAL)
1296 break;
1297
1298 gfar_copy_filer_entries(&(tab->fe[iend + 1]),
1299 &(tab->fe[jend + 1]), jend - j);
1300
1301 if (gfar_trim_filer_entries(jend - 1,
1302 jend + (jend - j),
1303 tab) == -EINVAL)
1304 return;
1305
1306 /* Mask out cluster bit */
1307 tab->fe[iend].ctrl &= ~(RQFCR_CLE);
1308 }
1309 }
1310 }
1311
1312 /* Swaps the masked bits of a1<>a2 and b1<>b2 */
1313 static void gfar_swap_bits(struct gfar_filer_entry *a1,
1314 struct gfar_filer_entry *a2,
1315 struct gfar_filer_entry *b1,
1316 struct gfar_filer_entry *b2, u32 mask)
1317 {
1318 u32 temp[4];
1319 temp[0] = a1->ctrl & mask;
1320 temp[1] = a2->ctrl & mask;
1321 temp[2] = b1->ctrl & mask;
1322 temp[3] = b2->ctrl & mask;
1323
1324 a1->ctrl &= ~mask;
1325 a2->ctrl &= ~mask;
1326 b1->ctrl &= ~mask;
1327 b2->ctrl &= ~mask;
1328
1329 a1->ctrl |= temp[1];
1330 a2->ctrl |= temp[0];
1331 b1->ctrl |= temp[3];
1332 b2->ctrl |= temp[2];
1333 }
1334
1335 /* Generate a list consisting of masks values with their start and
1336 * end of validity and block as indicator for parts belonging
1337 * together (glued by ANDs) in mask_table
1338 */
1339 static u32 gfar_generate_mask_table(struct gfar_mask_entry *mask_table,
1340 struct filer_table *tab)
1341 {
1342 u32 i, and_index = 0, block_index = 1;
1343
1344 for (i = 0; i < tab->index; i++) {
1345
1346 /* LSByte of control = 0 sets a mask */
1347 if (!(tab->fe[i].ctrl & 0xF)) {
1348 mask_table[and_index].mask = tab->fe[i].prop;
1349 mask_table[and_index].start = i;
1350 mask_table[and_index].block = block_index;
1351 if (and_index >= 1)
1352 mask_table[and_index - 1].end = i - 1;
1353 and_index++;
1354 }
1355 /* cluster starts and ends will be separated because they should
1356 * hold their position
1357 */
1358 if (tab->fe[i].ctrl & RQFCR_CLE)
1359 block_index++;
1360 /* A not set AND indicates the end of a depended block */
1361 if (!(tab->fe[i].ctrl & RQFCR_AND))
1362 block_index++;
1363 }
1364
1365 mask_table[and_index - 1].end = i - 1;
1366
1367 return and_index;
1368 }
1369
1370 /* Sorts the entries of mask_table by the values of the masks.
1371 * Important: The 0xFF80 flags of the first and last entry of a
1372 * block must hold their position (which queue, CLusterEnable, ReJEct,
1373 * AND)
1374 */
1375 static void gfar_sort_mask_table(struct gfar_mask_entry *mask_table,
1376 struct filer_table *temp_table, u32 and_index)
1377 {
1378 /* Pointer to compare function (_asc or _desc) */
1379 int (*gfar_comp)(const void *, const void *);
1380
1381 u32 i, size = 0, start = 0, prev = 1;
1382 u32 old_first, old_last, new_first, new_last;
1383
1384 gfar_comp = &gfar_comp_desc;
1385
1386 for (i = 0; i < and_index; i++) {
1387 if (prev != mask_table[i].block) {
1388 old_first = mask_table[start].start + 1;
1389 old_last = mask_table[i - 1].end;
1390 sort(mask_table + start, size,
1391 sizeof(struct gfar_mask_entry),
1392 gfar_comp, &gfar_swap);
1393
1394 /* Toggle order for every block. This makes the
1395 * thing more efficient!
1396 */
1397 if (gfar_comp == gfar_comp_desc)
1398 gfar_comp = &gfar_comp_asc;
1399 else
1400 gfar_comp = &gfar_comp_desc;
1401
1402 new_first = mask_table[start].start + 1;
1403 new_last = mask_table[i - 1].end;
1404
1405 gfar_swap_bits(&temp_table->fe[new_first],
1406 &temp_table->fe[old_first],
1407 &temp_table->fe[new_last],
1408 &temp_table->fe[old_last],
1409 RQFCR_QUEUE | RQFCR_CLE |
1410 RQFCR_RJE | RQFCR_AND);
1411
1412 start = i;
1413 size = 0;
1414 }
1415 size++;
1416 prev = mask_table[i].block;
1417 }
1418 }
1419
1420 /* Reduces the number of masks needed in the filer table to save entries
1421 * This is done by sorting the masks of a depended block. A depended block is
1422 * identified by gluing ANDs or CLE. The sorting order toggles after every
1423 * block. Of course entries in scope of a mask must change their location with
1424 * it.
1425 */
1426 static int gfar_optimize_filer_masks(struct filer_table *tab)
1427 {
1428 struct filer_table *temp_table;
1429 struct gfar_mask_entry *mask_table;
1430
1431 u32 and_index = 0, previous_mask = 0, i = 0, j = 0, size = 0;
1432 s32 ret = 0;
1433
1434 /* We need a copy of the filer table because
1435 * we want to change its order
1436 */
1437 temp_table = kmemdup(tab, sizeof(*temp_table), GFP_KERNEL);
1438 if (temp_table == NULL)
1439 return -ENOMEM;
1440
1441 mask_table = kcalloc(MAX_FILER_CACHE_IDX / 2 + 1,
1442 sizeof(struct gfar_mask_entry), GFP_KERNEL);
1443
1444 if (mask_table == NULL) {
1445 ret = -ENOMEM;
1446 goto end;
1447 }
1448
1449 and_index = gfar_generate_mask_table(mask_table, tab);
1450
1451 gfar_sort_mask_table(mask_table, temp_table, and_index);
1452
1453 /* Now we can copy the data from our duplicated filer table to
1454 * the real one in the order the mask table says
1455 */
1456 for (i = 0; i < and_index; i++) {
1457 size = mask_table[i].end - mask_table[i].start + 1;
1458 gfar_copy_filer_entries(&(tab->fe[j]),
1459 &(temp_table->fe[mask_table[i].start]), size);
1460 j += size;
1461 }
1462
1463 /* And finally we just have to check for duplicated masks and drop the
1464 * second ones
1465 */
1466 for (i = 0; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1467 if (tab->fe[i].ctrl == 0x80) {
1468 previous_mask = i++;
1469 break;
1470 }
1471 }
1472 for (; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1473 if (tab->fe[i].ctrl == 0x80) {
1474 if (tab->fe[i].prop == tab->fe[previous_mask].prop) {
1475 /* Two identical ones found!
1476 * So drop the second one!
1477 */
1478 gfar_trim_filer_entries(i, i, tab);
1479 } else
1480 /* Not identical! */
1481 previous_mask = i;
1482 }
1483 }
1484
1485 kfree(mask_table);
1486 end: kfree(temp_table);
1487 return ret;
1488 }
1489
1490 /* Write the bit-pattern from software's buffer to hardware registers */
1491 static int gfar_write_filer_table(struct gfar_private *priv,
1492 struct filer_table *tab)
1493 {
1494 u32 i = 0;
1495 if (tab->index > MAX_FILER_IDX - 1)
1496 return -EBUSY;
1497
1498 /* Avoid inconsistent filer table to be processed */
1499 lock_rx_qs(priv);
1500
1501 /* Fill regular entries */
1502 for (; i < MAX_FILER_IDX - 1 && (tab->fe[i].ctrl | tab->fe[i].ctrl);
1503 i++)
1504 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1505 /* Fill the rest with fall-troughs */
1506 for (; i < MAX_FILER_IDX - 1; i++)
1507 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1508 /* Last entry must be default accept
1509 * because that's what people expect
1510 */
1511 gfar_write_filer(priv, i, 0x20, 0x0);
1512
1513 unlock_rx_qs(priv);
1514
1515 return 0;
1516 }
1517
1518 static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1519 struct gfar_private *priv)
1520 {
1521
1522 if (flow->flow_type & FLOW_EXT) {
1523 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1524 netdev_warn(priv->ndev,
1525 "User-specific data not supported!\n");
1526 if (~flow->m_ext.vlan_etype)
1527 netdev_warn(priv->ndev,
1528 "VLAN-etype not supported!\n");
1529 }
1530 if (flow->flow_type == IP_USER_FLOW)
1531 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1532 netdev_warn(priv->ndev,
1533 "IP-Version differing from IPv4 not supported!\n");
1534
1535 return 0;
1536 }
1537
1538 static int gfar_process_filer_changes(struct gfar_private *priv)
1539 {
1540 struct ethtool_flow_spec_container *j;
1541 struct filer_table *tab;
1542 s32 i = 0;
1543 s32 ret = 0;
1544
1545 /* So index is set to zero, too! */
1546 tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1547 if (tab == NULL)
1548 return -ENOMEM;
1549
1550 /* Now convert the existing filer data from flow_spec into
1551 * filer tables binary format
1552 */
1553 list_for_each_entry(j, &priv->rx_list.list, list) {
1554 ret = gfar_convert_to_filer(&j->fs, tab);
1555 if (ret == -EBUSY) {
1556 netdev_err(priv->ndev,
1557 "Rule not added: No free space!\n");
1558 goto end;
1559 }
1560 if (ret == -1) {
1561 netdev_err(priv->ndev,
1562 "Rule not added: Unsupported Flow-type!\n");
1563 goto end;
1564 }
1565 }
1566
1567 i = tab->index;
1568
1569 /* Optimizations to save entries */
1570 gfar_cluster_filer(tab);
1571 gfar_optimize_filer_masks(tab);
1572
1573 pr_debug("\tSummary:\n"
1574 "\tData on hardware: %d\n"
1575 "\tCompression rate: %d%%\n",
1576 tab->index, 100 - (100 * tab->index) / i);
1577
1578 /* Write everything to hardware */
1579 ret = gfar_write_filer_table(priv, tab);
1580 if (ret == -EBUSY) {
1581 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1582 goto end;
1583 }
1584
1585 end:
1586 kfree(tab);
1587 return ret;
1588 }
1589
1590 static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1591 {
1592 u32 i = 0;
1593
1594 for (i = 0; i < sizeof(flow->m_u); i++)
1595 flow->m_u.hdata[i] ^= 0xFF;
1596
1597 flow->m_ext.vlan_etype ^= 0xFFFF;
1598 flow->m_ext.vlan_tci ^= 0xFFFF;
1599 flow->m_ext.data[0] ^= ~0;
1600 flow->m_ext.data[1] ^= ~0;
1601 }
1602
1603 static int gfar_add_cls(struct gfar_private *priv,
1604 struct ethtool_rx_flow_spec *flow)
1605 {
1606 struct ethtool_flow_spec_container *temp, *comp;
1607 int ret = 0;
1608
1609 temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1610 if (temp == NULL)
1611 return -ENOMEM;
1612 memcpy(&temp->fs, flow, sizeof(temp->fs));
1613
1614 gfar_invert_masks(&temp->fs);
1615 ret = gfar_check_capability(&temp->fs, priv);
1616 if (ret)
1617 goto clean_mem;
1618 /* Link in the new element at the right @location */
1619 if (list_empty(&priv->rx_list.list)) {
1620 ret = gfar_check_filer_hardware(priv);
1621 if (ret != 0)
1622 goto clean_mem;
1623 list_add(&temp->list, &priv->rx_list.list);
1624 goto process;
1625 } else {
1626 list_for_each_entry(comp, &priv->rx_list.list, list) {
1627 if (comp->fs.location > flow->location) {
1628 list_add_tail(&temp->list, &comp->list);
1629 goto process;
1630 }
1631 if (comp->fs.location == flow->location) {
1632 netdev_err(priv->ndev,
1633 "Rule not added: ID %d not free!\n",
1634 flow->location);
1635 ret = -EBUSY;
1636 goto clean_mem;
1637 }
1638 }
1639 list_add_tail(&temp->list, &priv->rx_list.list);
1640 }
1641
1642 process:
1643 ret = gfar_process_filer_changes(priv);
1644 if (ret)
1645 goto clean_list;
1646 priv->rx_list.count++;
1647 return ret;
1648
1649 clean_list:
1650 list_del(&temp->list);
1651 clean_mem:
1652 kfree(temp);
1653 return ret;
1654 }
1655
1656 static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1657 {
1658 struct ethtool_flow_spec_container *comp;
1659 u32 ret = -EINVAL;
1660
1661 if (list_empty(&priv->rx_list.list))
1662 return ret;
1663
1664 list_for_each_entry(comp, &priv->rx_list.list, list) {
1665 if (comp->fs.location == loc) {
1666 list_del(&comp->list);
1667 kfree(comp);
1668 priv->rx_list.count--;
1669 gfar_process_filer_changes(priv);
1670 ret = 0;
1671 break;
1672 }
1673 }
1674
1675 return ret;
1676 }
1677
1678 static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1679 {
1680 struct ethtool_flow_spec_container *comp;
1681 u32 ret = -EINVAL;
1682
1683 list_for_each_entry(comp, &priv->rx_list.list, list) {
1684 if (comp->fs.location == cmd->fs.location) {
1685 memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1686 gfar_invert_masks(&cmd->fs);
1687 ret = 0;
1688 break;
1689 }
1690 }
1691
1692 return ret;
1693 }
1694
1695 static int gfar_get_cls_all(struct gfar_private *priv,
1696 struct ethtool_rxnfc *cmd, u32 *rule_locs)
1697 {
1698 struct ethtool_flow_spec_container *comp;
1699 u32 i = 0;
1700
1701 list_for_each_entry(comp, &priv->rx_list.list, list) {
1702 if (i == cmd->rule_cnt)
1703 return -EMSGSIZE;
1704 rule_locs[i] = comp->fs.location;
1705 i++;
1706 }
1707
1708 cmd->data = MAX_FILER_IDX;
1709 cmd->rule_cnt = i;
1710
1711 return 0;
1712 }
1713
1714 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1715 {
1716 struct gfar_private *priv = netdev_priv(dev);
1717 int ret = 0;
1718
1719 mutex_lock(&priv->rx_queue_access);
1720
1721 switch (cmd->cmd) {
1722 case ETHTOOL_SRXFH:
1723 ret = gfar_set_hash_opts(priv, cmd);
1724 break;
1725 case ETHTOOL_SRXCLSRLINS:
1726 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1727 cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1728 cmd->fs.location >= MAX_FILER_IDX) {
1729 ret = -EINVAL;
1730 break;
1731 }
1732 ret = gfar_add_cls(priv, &cmd->fs);
1733 break;
1734 case ETHTOOL_SRXCLSRLDEL:
1735 ret = gfar_del_cls(priv, cmd->fs.location);
1736 break;
1737 default:
1738 ret = -EINVAL;
1739 }
1740
1741 mutex_unlock(&priv->rx_queue_access);
1742
1743 return ret;
1744 }
1745
1746 static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1747 u32 *rule_locs)
1748 {
1749 struct gfar_private *priv = netdev_priv(dev);
1750 int ret = 0;
1751
1752 switch (cmd->cmd) {
1753 case ETHTOOL_GRXRINGS:
1754 cmd->data = priv->num_rx_queues;
1755 break;
1756 case ETHTOOL_GRXCLSRLCNT:
1757 cmd->rule_cnt = priv->rx_list.count;
1758 break;
1759 case ETHTOOL_GRXCLSRULE:
1760 ret = gfar_get_cls(priv, cmd);
1761 break;
1762 case ETHTOOL_GRXCLSRLALL:
1763 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1764 break;
1765 default:
1766 ret = -EINVAL;
1767 break;
1768 }
1769
1770 return ret;
1771 }
1772
1773 int gfar_phc_index = -1;
1774 EXPORT_SYMBOL(gfar_phc_index);
1775
1776 static int gfar_get_ts_info(struct net_device *dev,
1777 struct ethtool_ts_info *info)
1778 {
1779 struct gfar_private *priv = netdev_priv(dev);
1780
1781 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1782 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1783 SOF_TIMESTAMPING_SOFTWARE;
1784 info->phc_index = -1;
1785 return 0;
1786 }
1787 info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1788 SOF_TIMESTAMPING_RX_HARDWARE |
1789 SOF_TIMESTAMPING_RAW_HARDWARE;
1790 info->phc_index = gfar_phc_index;
1791 info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1792 (1 << HWTSTAMP_TX_ON);
1793 info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1794 (1 << HWTSTAMP_FILTER_ALL);
1795 return 0;
1796 }
1797
1798 const struct ethtool_ops gfar_ethtool_ops = {
1799 .get_settings = gfar_gsettings,
1800 .set_settings = gfar_ssettings,
1801 .get_drvinfo = gfar_gdrvinfo,
1802 .get_regs_len = gfar_reglen,
1803 .get_regs = gfar_get_regs,
1804 .get_link = ethtool_op_get_link,
1805 .get_coalesce = gfar_gcoalesce,
1806 .set_coalesce = gfar_scoalesce,
1807 .get_ringparam = gfar_gringparam,
1808 .set_ringparam = gfar_sringparam,
1809 .get_strings = gfar_gstrings,
1810 .get_sset_count = gfar_sset_count,
1811 .get_ethtool_stats = gfar_fill_stats,
1812 .get_msglevel = gfar_get_msglevel,
1813 .set_msglevel = gfar_set_msglevel,
1814 #ifdef CONFIG_PM
1815 .get_wol = gfar_get_wol,
1816 .set_wol = gfar_set_wol,
1817 #endif
1818 .set_rxnfc = gfar_set_nfc,
1819 .get_rxnfc = gfar_get_nfc,
1820 .get_ts_info = gfar_get_ts_info,
1821 };
Linux kernel - Deliverables
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