?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
ethernet: Remove unnecessary alloc/OOM messages, alloc cleanups
[linux-2.6/btrfs-unstable.git] / drivers / net / ethernet / freescale / gianfar_ethtool.c
blob45e59d5c071f33ba0685d45683f4474293229d7f
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-dropped-by-kernel",
70 "rx-large-frame-errors",
71 "rx-short-frame-errors",
72 "rx-non-octet-errors",
73 "rx-crc-errors",
74 "rx-overrun-errors",
75 "rx-busy-errors",
76 "rx-babbling-errors",
77 "rx-truncated-frames",
78 "ethernet-bus-error",
79 "tx-babbling-errors",
80 "tx-underrun-errors",
81 "rx-skb-missing-errors",
82 "tx-timeout-errors",
83 "tx-rx-64-frames",
84 "tx-rx-65-127-frames",
85 "tx-rx-128-255-frames",
86 "tx-rx-256-511-frames",
87 "tx-rx-512-1023-frames",
88 "tx-rx-1024-1518-frames",
89 "tx-rx-1519-1522-good-vlan",
90 "rx-bytes",
91 "rx-packets",
92 "rx-fcs-errors",
93 "receive-multicast-packet",
94 "receive-broadcast-packet",
95 "rx-control-frame-packets",
96 "rx-pause-frame-packets",
97 "rx-unknown-op-code",
98 "rx-alignment-error",
99 "rx-frame-length-error",
100 "rx-code-error",
101 "rx-carrier-sense-error",
102 "rx-undersize-packets",
103 "rx-oversize-packets",
104 "rx-fragmented-frames",
105 "rx-jabber-frames",
106 "rx-dropped-frames",
107 "tx-byte-counter",
108 "tx-packets",
109 "tx-multicast-packets",
110 "tx-broadcast-packets",
111 "tx-pause-control-frames",
112 "tx-deferral-packets",
113 "tx-excessive-deferral-packets",
114 "tx-single-collision-packets",
115 "tx-multiple-collision-packets",
116 "tx-late-collision-packets",
117 "tx-excessive-collision-packets",
118 "tx-total-collision",
119 "reserved",
120 "tx-dropped-frames",
121 "tx-jabber-frames",
122 "tx-fcs-errors",
123 "tx-control-frames",
124 "tx-oversize-frames",
125 "tx-undersize-frames",
126 "tx-fragmented-frames",
127 };
128
129 /* Fill in a buffer with the strings which correspond to the
130 * stats */
131 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
132 {
133 struct gfar_private *priv = netdev_priv(dev);
134
135 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
136 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
137 else
138 memcpy(buf, stat_gstrings,
139 GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
140 }
141
142 /* Fill in an array of 64-bit statistics from various sources.
143 * This array will be appended to the end of the ethtool_stats
144 * structure, and returned to user space
145 */
146 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
147 u64 *buf)
148 {
149 int i;
150 struct gfar_private *priv = netdev_priv(dev);
151 struct gfar __iomem *regs = priv->gfargrp[0].regs;
152 u64 *extra = (u64 *) & priv->extra_stats;
153
154 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
155 u32 __iomem *rmon = (u32 __iomem *) &regs->rmon;
156 struct gfar_stats *stats = (struct gfar_stats *) buf;
157
158 for (i = 0; i < GFAR_RMON_LEN; i++)
159 stats->rmon[i] = (u64) gfar_read(&rmon[i]);
160
161 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
162 stats->extra[i] = extra[i];
163 } else
164 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
165 buf[i] = extra[i];
166 }
167
168 static int gfar_sset_count(struct net_device *dev, int sset)
169 {
170 struct gfar_private *priv = netdev_priv(dev);
171
172 switch (sset) {
173 case ETH_SS_STATS:
174 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
175 return GFAR_STATS_LEN;
176 else
177 return GFAR_EXTRA_STATS_LEN;
178 default:
179 return -EOPNOTSUPP;
180 }
181 }
182
183 /* Fills in the drvinfo structure with some basic info */
184 static void gfar_gdrvinfo(struct net_device *dev,
185 struct ethtool_drvinfo *drvinfo)
186 {
187 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
188 strlcpy(drvinfo->version, gfar_driver_version,
189 sizeof(drvinfo->version));
190 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
191 strlcpy(drvinfo->bus_info, "N/A", sizeof(drvinfo->bus_info));
192 drvinfo->regdump_len = 0;
193 drvinfo->eedump_len = 0;
194 }
195
196
197 static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
198 {
199 struct gfar_private *priv = netdev_priv(dev);
200 struct phy_device *phydev = priv->phydev;
201
202 if (NULL == phydev)
203 return -ENODEV;
204
205 return phy_ethtool_sset(phydev, cmd);
206 }
207
208
209 /* Return the current settings in the ethtool_cmd structure */
210 static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
211 {
212 struct gfar_private *priv = netdev_priv(dev);
213 struct phy_device *phydev = priv->phydev;
214 struct gfar_priv_rx_q *rx_queue = NULL;
215 struct gfar_priv_tx_q *tx_queue = NULL;
216
217 if (NULL == phydev)
218 return -ENODEV;
219 tx_queue = priv->tx_queue[0];
220 rx_queue = priv->rx_queue[0];
221
222 /* etsec-1.7 and older versions have only one txic
223 * and rxic regs although they support multiple queues */
224 cmd->maxtxpkt = get_icft_value(tx_queue->txic);
225 cmd->maxrxpkt = get_icft_value(rx_queue->rxic);
226
227 return phy_ethtool_gset(phydev, cmd);
228 }
229
230 /* Return the length of the register structure */
231 static int gfar_reglen(struct net_device *dev)
232 {
233 return sizeof (struct gfar);
234 }
235
236 /* Return a dump of the GFAR register space */
237 static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
238 void *regbuf)
239 {
240 int i;
241 struct gfar_private *priv = netdev_priv(dev);
242 u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
243 u32 *buf = (u32 *) regbuf;
244
245 for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
246 buf[i] = gfar_read(&theregs[i]);
247 }
248
249 /* Convert microseconds to ethernet clock ticks, which changes
250 * depending on what speed the controller is running at */
251 static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
252 unsigned int usecs)
253 {
254 unsigned int count;
255
256 /* The timer is different, depending on the interface speed */
257 switch (priv->phydev->speed) {
258 case SPEED_1000:
259 count = GFAR_GBIT_TIME;
260 break;
261 case SPEED_100:
262 count = GFAR_100_TIME;
263 break;
264 case SPEED_10:
265 default:
266 count = GFAR_10_TIME;
267 break;
268 }
269
270 /* Make sure we return a number greater than 0
271 * if usecs > 0 */
272 return (usecs * 1000 + count - 1) / count;
273 }
274
275 /* Convert ethernet clock ticks to microseconds */
276 static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
277 unsigned int ticks)
278 {
279 unsigned int count;
280
281 /* The timer is different, depending on the interface speed */
282 switch (priv->phydev->speed) {
283 case SPEED_1000:
284 count = GFAR_GBIT_TIME;
285 break;
286 case SPEED_100:
287 count = GFAR_100_TIME;
288 break;
289 case SPEED_10:
290 default:
291 count = GFAR_10_TIME;
292 break;
293 }
294
295 /* Make sure we return a number greater than 0 */
296 /* if ticks is > 0 */
297 return (ticks * count) / 1000;
298 }
299
300 /* Get the coalescing parameters, and put them in the cvals
301 * structure. */
302 static int gfar_gcoalesce(struct net_device *dev,
303 struct ethtool_coalesce *cvals)
304 {
305 struct gfar_private *priv = netdev_priv(dev);
306 struct gfar_priv_rx_q *rx_queue = NULL;
307 struct gfar_priv_tx_q *tx_queue = NULL;
308 unsigned long rxtime;
309 unsigned long rxcount;
310 unsigned long txtime;
311 unsigned long txcount;
312
313 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
314 return -EOPNOTSUPP;
315
316 if (NULL == priv->phydev)
317 return -ENODEV;
318
319 rx_queue = priv->rx_queue[0];
320 tx_queue = priv->tx_queue[0];
321
322 rxtime = get_ictt_value(rx_queue->rxic);
323 rxcount = get_icft_value(rx_queue->rxic);
324 txtime = get_ictt_value(tx_queue->txic);
325 txcount = get_icft_value(tx_queue->txic);
326 cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
327 cvals->rx_max_coalesced_frames = rxcount;
328
329 cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
330 cvals->tx_max_coalesced_frames = txcount;
331
332 cvals->use_adaptive_rx_coalesce = 0;
333 cvals->use_adaptive_tx_coalesce = 0;
334
335 cvals->pkt_rate_low = 0;
336 cvals->rx_coalesce_usecs_low = 0;
337 cvals->rx_max_coalesced_frames_low = 0;
338 cvals->tx_coalesce_usecs_low = 0;
339 cvals->tx_max_coalesced_frames_low = 0;
340
341 /* When the packet rate is below pkt_rate_high but above
342 * pkt_rate_low (both measured in packets per second) the
343 * normal {rx,tx}_* coalescing parameters are used.
344 */
345
346 /* When the packet rate is (measured in packets per second)
347 * is above pkt_rate_high, the {rx,tx}_*_high parameters are
348 * used.
349 */
350 cvals->pkt_rate_high = 0;
351 cvals->rx_coalesce_usecs_high = 0;
352 cvals->rx_max_coalesced_frames_high = 0;
353 cvals->tx_coalesce_usecs_high = 0;
354 cvals->tx_max_coalesced_frames_high = 0;
355
356 /* How often to do adaptive coalescing packet rate sampling,
357 * measured in seconds. Must not be zero.
358 */
359 cvals->rate_sample_interval = 0;
360
361 return 0;
362 }
363
364 /* Change the coalescing values.
365 * Both cvals->*_usecs and cvals->*_frames have to be > 0
366 * in order for coalescing to be active
367 */
368 static int gfar_scoalesce(struct net_device *dev,
369 struct ethtool_coalesce *cvals)
370 {
371 struct gfar_private *priv = netdev_priv(dev);
372 int i = 0;
373
374 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
375 return -EOPNOTSUPP;
376
377 /* Set up rx coalescing */
378 /* As of now, we will enable/disable coalescing for all
379 * queues together in case of eTSEC2, this will be modified
380 * along with the ethtool interface
381 */
382 if ((cvals->rx_coalesce_usecs == 0) ||
383 (cvals->rx_max_coalesced_frames == 0)) {
384 for (i = 0; i < priv->num_rx_queues; i++)
385 priv->rx_queue[i]->rxcoalescing = 0;
386 } else {
387 for (i = 0; i < priv->num_rx_queues; i++)
388 priv->rx_queue[i]->rxcoalescing = 1;
389 }
390
391 if (NULL == priv->phydev)
392 return -ENODEV;
393
394 /* Check the bounds of the values */
395 if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
396 pr_info("Coalescing is limited to %d microseconds\n",
397 GFAR_MAX_COAL_USECS);
398 return -EINVAL;
399 }
400
401 if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
402 pr_info("Coalescing is limited to %d frames\n",
403 GFAR_MAX_COAL_FRAMES);
404 return -EINVAL;
405 }
406
407 for (i = 0; i < priv->num_rx_queues; i++) {
408 priv->rx_queue[i]->rxic = mk_ic_value(
409 cvals->rx_max_coalesced_frames,
410 gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
411 }
412
413 /* Set up tx coalescing */
414 if ((cvals->tx_coalesce_usecs == 0) ||
415 (cvals->tx_max_coalesced_frames == 0)) {
416 for (i = 0; i < priv->num_tx_queues; i++)
417 priv->tx_queue[i]->txcoalescing = 0;
418 } else {
419 for (i = 0; i < priv->num_tx_queues; i++)
420 priv->tx_queue[i]->txcoalescing = 1;
421 }
422
423 /* Check the bounds of the values */
424 if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
425 pr_info("Coalescing is limited to %d microseconds\n",
426 GFAR_MAX_COAL_USECS);
427 return -EINVAL;
428 }
429
430 if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
431 pr_info("Coalescing is limited to %d frames\n",
432 GFAR_MAX_COAL_FRAMES);
433 return -EINVAL;
434 }
435
436 for (i = 0; i < priv->num_tx_queues; i++) {
437 priv->tx_queue[i]->txic = mk_ic_value(
438 cvals->tx_max_coalesced_frames,
439 gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
440 }
441
442 gfar_configure_coalescing(priv, 0xFF, 0xFF);
443
444 return 0;
445 }
446
447 /* Fills in rvals with the current ring parameters. Currently,
448 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
449 * jumbo are ignored by the driver */
450 static void gfar_gringparam(struct net_device *dev,
451 struct ethtool_ringparam *rvals)
452 {
453 struct gfar_private *priv = netdev_priv(dev);
454 struct gfar_priv_tx_q *tx_queue = NULL;
455 struct gfar_priv_rx_q *rx_queue = NULL;
456
457 tx_queue = priv->tx_queue[0];
458 rx_queue = priv->rx_queue[0];
459
460 rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
461 rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
462 rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
463 rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
464
465 /* Values changeable by the user. The valid values are
466 * in the range 1 to the "*_max_pending" counterpart above.
467 */
468 rvals->rx_pending = rx_queue->rx_ring_size;
469 rvals->rx_mini_pending = rx_queue->rx_ring_size;
470 rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
471 rvals->tx_pending = tx_queue->tx_ring_size;
472 }
473
474 /* Change the current ring parameters, stopping the controller if
475 * necessary so that we don't mess things up while we're in
476 * motion. We wait for the ring to be clean before reallocating
477 * the rings.
478 */
479 static int gfar_sringparam(struct net_device *dev,
480 struct ethtool_ringparam *rvals)
481 {
482 struct gfar_private *priv = netdev_priv(dev);
483 int err = 0, i = 0;
484
485 if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
486 return -EINVAL;
487
488 if (!is_power_of_2(rvals->rx_pending)) {
489 netdev_err(dev, "Ring sizes must be a power of 2\n");
490 return -EINVAL;
491 }
492
493 if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
494 return -EINVAL;
495
496 if (!is_power_of_2(rvals->tx_pending)) {
497 netdev_err(dev, "Ring sizes must be a power of 2\n");
498 return -EINVAL;
499 }
500
501
502 if (dev->flags & IFF_UP) {
503 unsigned long flags;
504
505 /* Halt TX and RX, and process the frames which
506 * have already been received
507 */
508 local_irq_save(flags);
509 lock_tx_qs(priv);
510 lock_rx_qs(priv);
511
512 gfar_halt(dev);
513
514 unlock_rx_qs(priv);
515 unlock_tx_qs(priv);
516 local_irq_restore(flags);
517
518 for (i = 0; i < priv->num_rx_queues; i++)
519 gfar_clean_rx_ring(priv->rx_queue[i],
520 priv->rx_queue[i]->rx_ring_size);
521
522 /* Now we take down the rings to rebuild them */
523 stop_gfar(dev);
524 }
525
526 /* Change the size */
527 for (i = 0; i < priv->num_rx_queues; i++) {
528 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
529 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
530 priv->tx_queue[i]->num_txbdfree =
531 priv->tx_queue[i]->tx_ring_size;
532 }
533
534 /* Rebuild the rings with the new size */
535 if (dev->flags & IFF_UP) {
536 err = startup_gfar(dev);
537 netif_tx_wake_all_queues(dev);
538 }
539 return err;
540 }
541
542 int gfar_set_features(struct net_device *dev, netdev_features_t features)
543 {
544 struct gfar_private *priv = netdev_priv(dev);
545 unsigned long flags;
546 int err = 0, i = 0;
547 netdev_features_t changed = dev->features ^ features;
548
549 if (changed & (NETIF_F_HW_VLAN_TX|NETIF_F_HW_VLAN_RX))
550 gfar_vlan_mode(dev, features);
551
552 if (!(changed & NETIF_F_RXCSUM))
553 return 0;
554
555 if (dev->flags & IFF_UP) {
556 /* Halt TX and RX, and process the frames which
557 * have already been received
558 */
559 local_irq_save(flags);
560 lock_tx_qs(priv);
561 lock_rx_qs(priv);
562
563 gfar_halt(dev);
564
565 unlock_tx_qs(priv);
566 unlock_rx_qs(priv);
567 local_irq_restore(flags);
568
569 for (i = 0; i < priv->num_rx_queues; i++)
570 gfar_clean_rx_ring(priv->rx_queue[i],
571 priv->rx_queue[i]->rx_ring_size);
572
573 /* Now we take down the rings to rebuild them */
574 stop_gfar(dev);
575
576 dev->features = features;
577
578 err = startup_gfar(dev);
579 netif_tx_wake_all_queues(dev);
580 }
581 return err;
582 }
583
584 static uint32_t gfar_get_msglevel(struct net_device *dev)
585 {
586 struct gfar_private *priv = netdev_priv(dev);
587
588 return priv->msg_enable;
589 }
590
591 static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
592 {
593 struct gfar_private *priv = netdev_priv(dev);
594
595 priv->msg_enable = data;
596 }
597
598 #ifdef CONFIG_PM
599 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
600 {
601 struct gfar_private *priv = netdev_priv(dev);
602
603 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) {
604 wol->supported = WAKE_MAGIC;
605 wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0;
606 } else {
607 wol->supported = wol->wolopts = 0;
608 }
609 }
610
611 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
612 {
613 struct gfar_private *priv = netdev_priv(dev);
614 unsigned long flags;
615
616 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
617 wol->wolopts != 0)
618 return -EINVAL;
619
620 if (wol->wolopts & ~WAKE_MAGIC)
621 return -EINVAL;
622
623 device_set_wakeup_enable(&dev->dev, wol->wolopts & WAKE_MAGIC);
624
625 spin_lock_irqsave(&priv->bflock, flags);
626 priv->wol_en = !!device_may_wakeup(&dev->dev);
627 spin_unlock_irqrestore(&priv->bflock, flags);
628
629 return 0;
630 }
631 #endif
632
633 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
634 {
635 u32 fcr = 0x0, fpr = FPR_FILER_MASK;
636
637 if (ethflow & RXH_L2DA) {
638 fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH |
639 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
640 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
641 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
642 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
643 priv->cur_filer_idx = priv->cur_filer_idx - 1;
644
645 fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
646 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
647 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
648 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
649 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
650 priv->cur_filer_idx = priv->cur_filer_idx - 1;
651 }
652
653 if (ethflow & RXH_VLAN) {
654 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
655 RQFCR_AND | RQFCR_HASHTBL_0;
656 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
657 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
658 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
659 priv->cur_filer_idx = priv->cur_filer_idx - 1;
660 }
661
662 if (ethflow & RXH_IP_SRC) {
663 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
664 RQFCR_AND | RQFCR_HASHTBL_0;
665 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
666 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
667 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
668 priv->cur_filer_idx = priv->cur_filer_idx - 1;
669 }
670
671 if (ethflow & (RXH_IP_DST)) {
672 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
673 RQFCR_AND | RQFCR_HASHTBL_0;
674 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
675 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
676 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
677 priv->cur_filer_idx = priv->cur_filer_idx - 1;
678 }
679
680 if (ethflow & RXH_L3_PROTO) {
681 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
682 RQFCR_AND | RQFCR_HASHTBL_0;
683 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
684 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
685 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
686 priv->cur_filer_idx = priv->cur_filer_idx - 1;
687 }
688
689 if (ethflow & RXH_L4_B_0_1) {
690 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
691 RQFCR_AND | RQFCR_HASHTBL_0;
692 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
693 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
694 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
695 priv->cur_filer_idx = priv->cur_filer_idx - 1;
696 }
697
698 if (ethflow & RXH_L4_B_2_3) {
699 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
700 RQFCR_AND | RQFCR_HASHTBL_0;
701 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
702 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
703 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
704 priv->cur_filer_idx = priv->cur_filer_idx - 1;
705 }
706 }
707
708 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
709 u64 class)
710 {
711 unsigned int last_rule_idx = priv->cur_filer_idx;
712 unsigned int cmp_rqfpr;
713 unsigned int *local_rqfpr;
714 unsigned int *local_rqfcr;
715 int i = 0x0, k = 0x0;
716 int j = MAX_FILER_IDX, l = 0x0;
717 int ret = 1;
718
719 local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
720 GFP_KERNEL);
721 local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
722 GFP_KERNEL);
723 if (!local_rqfpr || !local_rqfcr) {
724 ret = 0;
725 goto err;
726 }
727
728 switch (class) {
729 case TCP_V4_FLOW:
730 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
731 break;
732 case UDP_V4_FLOW:
733 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
734 break;
735 case TCP_V6_FLOW:
736 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
737 break;
738 case UDP_V6_FLOW:
739 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
740 break;
741 default:
742 pr_err("Right now this class is not supported\n");
743 ret = 0;
744 goto err;
745 }
746
747 for (i = 0; i < MAX_FILER_IDX + 1; i++) {
748 local_rqfpr[j] = priv->ftp_rqfpr[i];
749 local_rqfcr[j] = priv->ftp_rqfcr[i];
750 j--;
751 if ((priv->ftp_rqfcr[i] ==
752 (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
753 (priv->ftp_rqfpr[i] == cmp_rqfpr))
754 break;
755 }
756
757 if (i == MAX_FILER_IDX + 1) {
758 pr_err("No parse rule found, can't create hash rules\n");
759 ret = 0;
760 goto err;
761 }
762
763 /* If a match was found, then it begins the starting of a cluster rule
764 * if it was already programmed, we need to overwrite these rules
765 */
766 for (l = i+1; l < MAX_FILER_IDX; l++) {
767 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
768 !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
769 priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
770 RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
771 priv->ftp_rqfpr[l] = FPR_FILER_MASK;
772 gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
773 priv->ftp_rqfpr[l]);
774 break;
775 }
776
777 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
778 (priv->ftp_rqfcr[l] & RQFCR_AND))
779 continue;
780 else {
781 local_rqfpr[j] = priv->ftp_rqfpr[l];
782 local_rqfcr[j] = priv->ftp_rqfcr[l];
783 j--;
784 }
785 }
786
787 priv->cur_filer_idx = l - 1;
788 last_rule_idx = l;
789
790 /* hash rules */
791 ethflow_to_filer_rules(priv, ethflow);
792
793 /* Write back the popped out rules again */
794 for (k = j+1; k < MAX_FILER_IDX; k++) {
795 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
796 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
797 gfar_write_filer(priv, priv->cur_filer_idx,
798 local_rqfcr[k], local_rqfpr[k]);
799 if (!priv->cur_filer_idx)
800 break;
801 priv->cur_filer_idx = priv->cur_filer_idx - 1;
802 }
803
804 err:
805 kfree(local_rqfcr);
806 kfree(local_rqfpr);
807 return ret;
808 }
809
810 static int gfar_set_hash_opts(struct gfar_private *priv,
811 struct ethtool_rxnfc *cmd)
812 {
813 /* write the filer rules here */
814 if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
815 return -EINVAL;
816
817 return 0;
818 }
819
820 static int gfar_check_filer_hardware(struct gfar_private *priv)
821 {
822 struct gfar __iomem *regs = NULL;
823 u32 i;
824
825 regs = priv->gfargrp[0].regs;
826
827 /* Check if we are in FIFO mode */
828 i = gfar_read(&regs->ecntrl);
829 i &= ECNTRL_FIFM;
830 if (i == ECNTRL_FIFM) {
831 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
832 i = gfar_read(&regs->rctrl);
833 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
834 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
835 netdev_info(priv->ndev,
836 "Receive Queue Filtering enabled\n");
837 } else {
838 netdev_warn(priv->ndev,
839 "Receive Queue Filtering disabled\n");
840 return -EOPNOTSUPP;
841 }
842 }
843 /* Or in standard mode */
844 else {
845 i = gfar_read(&regs->rctrl);
846 i &= RCTRL_PRSDEP_MASK;
847 if (i == RCTRL_PRSDEP_MASK) {
848 netdev_info(priv->ndev,
849 "Receive Queue Filtering enabled\n");
850 } else {
851 netdev_warn(priv->ndev,
852 "Receive Queue Filtering disabled\n");
853 return -EOPNOTSUPP;
854 }
855 }
856
857 /* Sets the properties for arbitrary filer rule
858 * to the first 4 Layer 4 Bytes
859 */
860 regs->rbifx = 0xC0C1C2C3;
861 return 0;
862 }
863
864 static int gfar_comp_asc(const void *a, const void *b)
865 {
866 return memcmp(a, b, 4);
867 }
868
869 static int gfar_comp_desc(const void *a, const void *b)
870 {
871 return -memcmp(a, b, 4);
872 }
873
874 static void gfar_swap(void *a, void *b, int size)
875 {
876 u32 *_a = a;
877 u32 *_b = b;
878
879 swap(_a[0], _b[0]);
880 swap(_a[1], _b[1]);
881 swap(_a[2], _b[2]);
882 swap(_a[3], _b[3]);
883 }
884
885 /* Write a mask to filer cache */
886 static void gfar_set_mask(u32 mask, struct filer_table *tab)
887 {
888 tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
889 tab->fe[tab->index].prop = mask;
890 tab->index++;
891 }
892
893 /* Sets parse bits (e.g. IP or TCP) */
894 static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
895 {
896 gfar_set_mask(mask, tab);
897 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
898 RQFCR_AND;
899 tab->fe[tab->index].prop = value;
900 tab->index++;
901 }
902
903 static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
904 struct filer_table *tab)
905 {
906 gfar_set_mask(mask, tab);
907 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
908 tab->fe[tab->index].prop = value;
909 tab->index++;
910 }
911
912 /* For setting a tuple of value and mask of type flag
913 * Example:
914 * IP-Src = 10.0.0.0/255.0.0.0
915 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
916 *
917 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
918 * For a don't care mask it gives us a 0
919 *
920 * The check if don't care and the mask adjustment if mask=0 is done for VLAN
921 * and MAC stuff on an upper level (due to missing information on this level).
922 * For these guys we can discard them if they are value=0 and mask=0.
923 *
924 * Further the all masks are one-padded for better hardware efficiency.
925 */
926 static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
927 struct filer_table *tab)
928 {
929 switch (flag) {
930 /* 3bit */
931 case RQFCR_PID_PRI:
932 if (!(value | mask))
933 return;
934 mask |= RQFCR_PID_PRI_MASK;
935 break;
936 /* 8bit */
937 case RQFCR_PID_L4P:
938 case RQFCR_PID_TOS:
939 if (!~(mask | RQFCR_PID_L4P_MASK))
940 return;
941 if (!mask)
942 mask = ~0;
943 else
944 mask |= RQFCR_PID_L4P_MASK;
945 break;
946 /* 12bit */
947 case RQFCR_PID_VID:
948 if (!(value | mask))
949 return;
950 mask |= RQFCR_PID_VID_MASK;
951 break;
952 /* 16bit */
953 case RQFCR_PID_DPT:
954 case RQFCR_PID_SPT:
955 case RQFCR_PID_ETY:
956 if (!~(mask | RQFCR_PID_PORT_MASK))
957 return;
958 if (!mask)
959 mask = ~0;
960 else
961 mask |= RQFCR_PID_PORT_MASK;
962 break;
963 /* 24bit */
964 case RQFCR_PID_DAH:
965 case RQFCR_PID_DAL:
966 case RQFCR_PID_SAH:
967 case RQFCR_PID_SAL:
968 if (!(value | mask))
969 return;
970 mask |= RQFCR_PID_MAC_MASK;
971 break;
972 /* for all real 32bit masks */
973 default:
974 if (!~mask)
975 return;
976 if (!mask)
977 mask = ~0;
978 break;
979 }
980 gfar_set_general_attribute(value, mask, flag, tab);
981 }
982
983 /* Translates value and mask for UDP, TCP or SCTP */
984 static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
985 struct ethtool_tcpip4_spec *mask,
986 struct filer_table *tab)
987 {
988 gfar_set_attribute(value->ip4src, mask->ip4src, RQFCR_PID_SIA, tab);
989 gfar_set_attribute(value->ip4dst, mask->ip4dst, RQFCR_PID_DIA, tab);
990 gfar_set_attribute(value->pdst, mask->pdst, RQFCR_PID_DPT, tab);
991 gfar_set_attribute(value->psrc, mask->psrc, RQFCR_PID_SPT, tab);
992 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
993 }
994
995 /* Translates value and mask for RAW-IP4 */
996 static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
997 struct ethtool_usrip4_spec *mask,
998 struct filer_table *tab)
999 {
1000 gfar_set_attribute(value->ip4src, mask->ip4src, RQFCR_PID_SIA, tab);
1001 gfar_set_attribute(value->ip4dst, mask->ip4dst, RQFCR_PID_DIA, tab);
1002 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1003 gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
1004 gfar_set_attribute(value->l4_4_bytes, mask->l4_4_bytes, RQFCR_PID_ARB,
1005 tab);
1006
1007 }
1008
1009 /* Translates value and mask for ETHER spec */
1010 static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
1011 struct filer_table *tab)
1012 {
1013 u32 upper_temp_mask = 0;
1014 u32 lower_temp_mask = 0;
1015
1016 /* Source address */
1017 if (!is_broadcast_ether_addr(mask->h_source)) {
1018 if (is_zero_ether_addr(mask->h_source)) {
1019 upper_temp_mask = 0xFFFFFFFF;
1020 lower_temp_mask = 0xFFFFFFFF;
1021 } else {
1022 upper_temp_mask = mask->h_source[0] << 16 |
1023 mask->h_source[1] << 8 |
1024 mask->h_source[2];
1025 lower_temp_mask = mask->h_source[3] << 16 |
1026 mask->h_source[4] << 8 |
1027 mask->h_source[5];
1028 }
1029 /* Upper 24bit */
1030 gfar_set_attribute(value->h_source[0] << 16 |
1031 value->h_source[1] << 8 |
1032 value->h_source[2],
1033 upper_temp_mask, RQFCR_PID_SAH, tab);
1034 /* And the same for the lower part */
1035 gfar_set_attribute(value->h_source[3] << 16 |
1036 value->h_source[4] << 8 |
1037 value->h_source[5],
1038 lower_temp_mask, RQFCR_PID_SAL, tab);
1039 }
1040 /* Destination address */
1041 if (!is_broadcast_ether_addr(mask->h_dest)) {
1042 /* Special for destination is limited broadcast */
1043 if ((is_broadcast_ether_addr(value->h_dest) &&
1044 is_zero_ether_addr(mask->h_dest))) {
1045 gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1046 } else {
1047 if (is_zero_ether_addr(mask->h_dest)) {
1048 upper_temp_mask = 0xFFFFFFFF;
1049 lower_temp_mask = 0xFFFFFFFF;
1050 } else {
1051 upper_temp_mask = mask->h_dest[0] << 16 |
1052 mask->h_dest[1] << 8 |
1053 mask->h_dest[2];
1054 lower_temp_mask = mask->h_dest[3] << 16 |
1055 mask->h_dest[4] << 8 |
1056 mask->h_dest[5];
1057 }
1058
1059 /* Upper 24bit */
1060 gfar_set_attribute(value->h_dest[0] << 16 |
1061 value->h_dest[1] << 8 |
1062 value->h_dest[2],
1063 upper_temp_mask, RQFCR_PID_DAH, tab);
1064 /* And the same for the lower part */
1065 gfar_set_attribute(value->h_dest[3] << 16 |
1066 value->h_dest[4] << 8 |
1067 value->h_dest[5],
1068 lower_temp_mask, RQFCR_PID_DAL, tab);
1069 }
1070 }
1071
1072 gfar_set_attribute(value->h_proto, mask->h_proto, RQFCR_PID_ETY, tab);
1073 }
1074
1075 /* Convert a rule to binary filter format of gianfar */
1076 static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1077 struct filer_table *tab)
1078 {
1079 u32 vlan = 0, vlan_mask = 0;
1080 u32 id = 0, id_mask = 0;
1081 u32 cfi = 0, cfi_mask = 0;
1082 u32 prio = 0, prio_mask = 0;
1083 u32 old_index = tab->index;
1084
1085 /* Check if vlan is wanted */
1086 if ((rule->flow_type & FLOW_EXT) && (rule->m_ext.vlan_tci != 0xFFFF)) {
1087 if (!rule->m_ext.vlan_tci)
1088 rule->m_ext.vlan_tci = 0xFFFF;
1089
1090 vlan = RQFPR_VLN;
1091 vlan_mask = RQFPR_VLN;
1092
1093 /* Separate the fields */
1094 id = rule->h_ext.vlan_tci & VLAN_VID_MASK;
1095 id_mask = rule->m_ext.vlan_tci & VLAN_VID_MASK;
1096 cfi = rule->h_ext.vlan_tci & VLAN_CFI_MASK;
1097 cfi_mask = rule->m_ext.vlan_tci & VLAN_CFI_MASK;
1098 prio = (rule->h_ext.vlan_tci & VLAN_PRIO_MASK) >>
1099 VLAN_PRIO_SHIFT;
1100 prio_mask = (rule->m_ext.vlan_tci & VLAN_PRIO_MASK) >>
1101 VLAN_PRIO_SHIFT;
1102
1103 if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
1104 vlan |= RQFPR_CFI;
1105 vlan_mask |= RQFPR_CFI;
1106 } else if (cfi != VLAN_TAG_PRESENT &&
1107 cfi_mask == VLAN_TAG_PRESENT) {
1108 vlan_mask |= RQFPR_CFI;
1109 }
1110 }
1111
1112 switch (rule->flow_type & ~FLOW_EXT) {
1113 case TCP_V4_FLOW:
1114 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1115 RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1116 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1117 &rule->m_u.tcp_ip4_spec, tab);
1118 break;
1119 case UDP_V4_FLOW:
1120 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1121 RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1122 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1123 &rule->m_u.udp_ip4_spec, tab);
1124 break;
1125 case SCTP_V4_FLOW:
1126 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1127 tab);
1128 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1129 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1130 (struct ethtool_tcpip4_spec *)&rule->m_u,
1131 tab);
1132 break;
1133 case IP_USER_FLOW:
1134 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1135 tab);
1136 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1137 (struct ethtool_usrip4_spec *) &rule->m_u,
1138 tab);
1139 break;
1140 case ETHER_FLOW:
1141 if (vlan)
1142 gfar_set_parse_bits(vlan, vlan_mask, tab);
1143 gfar_set_ether((struct ethhdr *) &rule->h_u,
1144 (struct ethhdr *) &rule->m_u, tab);
1145 break;
1146 default:
1147 return -1;
1148 }
1149
1150 /* Set the vlan attributes in the end */
1151 if (vlan) {
1152 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1153 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1154 }
1155
1156 /* If there has been nothing written till now, it must be a default */
1157 if (tab->index == old_index) {
1158 gfar_set_mask(0xFFFFFFFF, tab);
1159 tab->fe[tab->index].ctrl = 0x20;
1160 tab->fe[tab->index].prop = 0x0;
1161 tab->index++;
1162 }
1163
1164 /* Remove last AND */
1165 tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1166
1167 /* Specify which queue to use or to drop */
1168 if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1169 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1170 else
1171 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1172
1173 /* Only big enough entries can be clustered */
1174 if (tab->index > (old_index + 2)) {
1175 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1176 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1177 }
1178
1179 /* In rare cases the cache can be full while there is
1180 * free space in hw
1181 */
1182 if (tab->index > MAX_FILER_CACHE_IDX - 1)
1183 return -EBUSY;
1184
1185 return 0;
1186 }
1187
1188 /* Copy size filer entries */
1189 static void gfar_copy_filer_entries(struct gfar_filer_entry dst[0],
1190 struct gfar_filer_entry src[0], s32 size)
1191 {
1192 while (size > 0) {
1193 size--;
1194 dst[size].ctrl = src[size].ctrl;
1195 dst[size].prop = src[size].prop;
1196 }
1197 }
1198
1199 /* Delete the contents of the filer-table between start and end
1200 * and collapse them
1201 */
1202 static int gfar_trim_filer_entries(u32 begin, u32 end, struct filer_table *tab)
1203 {
1204 int length;
1205
1206 if (end > MAX_FILER_CACHE_IDX || end < begin)
1207 return -EINVAL;
1208
1209 end++;
1210 length = end - begin;
1211
1212 /* Copy */
1213 while (end < tab->index) {
1214 tab->fe[begin].ctrl = tab->fe[end].ctrl;
1215 tab->fe[begin++].prop = tab->fe[end++].prop;
1216
1217 }
1218 /* Fill up with don't cares */
1219 while (begin < tab->index) {
1220 tab->fe[begin].ctrl = 0x60;
1221 tab->fe[begin].prop = 0xFFFFFFFF;
1222 begin++;
1223 }
1224
1225 tab->index -= length;
1226 return 0;
1227 }
1228
1229 /* Make space on the wanted location */
1230 static int gfar_expand_filer_entries(u32 begin, u32 length,
1231 struct filer_table *tab)
1232 {
1233 if (length == 0 || length + tab->index > MAX_FILER_CACHE_IDX ||
1234 begin > MAX_FILER_CACHE_IDX)
1235 return -EINVAL;
1236
1237 gfar_copy_filer_entries(&(tab->fe[begin + length]), &(tab->fe[begin]),
1238 tab->index - length + 1);
1239
1240 tab->index += length;
1241 return 0;
1242 }
1243
1244 static int gfar_get_next_cluster_start(int start, struct filer_table *tab)
1245 {
1246 for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
1247 start++) {
1248 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
1249 (RQFCR_AND | RQFCR_CLE))
1250 return start;
1251 }
1252 return -1;
1253 }
1254
1255 static int gfar_get_next_cluster_end(int start, struct filer_table *tab)
1256 {
1257 for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
1258 start++) {
1259 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
1260 (RQFCR_CLE))
1261 return start;
1262 }
1263 return -1;
1264 }
1265
1266 /* Uses hardwares clustering option to reduce
1267 * the number of filer table entries
1268 */
1269 static void gfar_cluster_filer(struct filer_table *tab)
1270 {
1271 s32 i = -1, j, iend, jend;
1272
1273 while ((i = gfar_get_next_cluster_start(++i, tab)) != -1) {
1274 j = i;
1275 while ((j = gfar_get_next_cluster_start(++j, tab)) != -1) {
1276 /* The cluster entries self and the previous one
1277 * (a mask) must be identical!
1278 */
1279 if (tab->fe[i].ctrl != tab->fe[j].ctrl)
1280 break;
1281 if (tab->fe[i].prop != tab->fe[j].prop)
1282 break;
1283 if (tab->fe[i - 1].ctrl != tab->fe[j - 1].ctrl)
1284 break;
1285 if (tab->fe[i - 1].prop != tab->fe[j - 1].prop)
1286 break;
1287 iend = gfar_get_next_cluster_end(i, tab);
1288 jend = gfar_get_next_cluster_end(j, tab);
1289 if (jend == -1 || iend == -1)
1290 break;
1291
1292 /* First we make some free space, where our cluster
1293 * element should be. Then we copy it there and finally
1294 * delete in from its old location.
1295 */
1296 if (gfar_expand_filer_entries(iend, (jend - j), tab) ==
1297 -EINVAL)
1298 break;
1299
1300 gfar_copy_filer_entries(&(tab->fe[iend + 1]),
1301 &(tab->fe[jend + 1]), jend - j);
1302
1303 if (gfar_trim_filer_entries(jend - 1,
1304 jend + (jend - j),
1305 tab) == -EINVAL)
1306 return;
1307
1308 /* Mask out cluster bit */
1309 tab->fe[iend].ctrl &= ~(RQFCR_CLE);
1310 }
1311 }
1312 }
1313
1314 /* Swaps the masked bits of a1<>a2 and b1<>b2 */
1315 static void gfar_swap_bits(struct gfar_filer_entry *a1,
1316 struct gfar_filer_entry *a2,
1317 struct gfar_filer_entry *b1,
1318 struct gfar_filer_entry *b2, u32 mask)
1319 {
1320 u32 temp[4];
1321 temp[0] = a1->ctrl & mask;
1322 temp[1] = a2->ctrl & mask;
1323 temp[2] = b1->ctrl & mask;
1324 temp[3] = b2->ctrl & mask;
1325
1326 a1->ctrl &= ~mask;
1327 a2->ctrl &= ~mask;
1328 b1->ctrl &= ~mask;
1329 b2->ctrl &= ~mask;
1330
1331 a1->ctrl |= temp[1];
1332 a2->ctrl |= temp[0];
1333 b1->ctrl |= temp[3];
1334 b2->ctrl |= temp[2];
1335 }
1336
1337 /* Generate a list consisting of masks values with their start and
1338 * end of validity and block as indicator for parts belonging
1339 * together (glued by ANDs) in mask_table
1340 */
1341 static u32 gfar_generate_mask_table(struct gfar_mask_entry *mask_table,
1342 struct filer_table *tab)
1343 {
1344 u32 i, and_index = 0, block_index = 1;
1345
1346 for (i = 0; i < tab->index; i++) {
1347
1348 /* LSByte of control = 0 sets a mask */
1349 if (!(tab->fe[i].ctrl & 0xF)) {
1350 mask_table[and_index].mask = tab->fe[i].prop;
1351 mask_table[and_index].start = i;
1352 mask_table[and_index].block = block_index;
1353 if (and_index >= 1)
1354 mask_table[and_index - 1].end = i - 1;
1355 and_index++;
1356 }
1357 /* cluster starts and ends will be separated because they should
1358 * hold their position
1359 */
1360 if (tab->fe[i].ctrl & RQFCR_CLE)
1361 block_index++;
1362 /* A not set AND indicates the end of a depended block */
1363 if (!(tab->fe[i].ctrl & RQFCR_AND))
1364 block_index++;
1365 }
1366
1367 mask_table[and_index - 1].end = i - 1;
1368
1369 return and_index;
1370 }
1371
1372 /* Sorts the entries of mask_table by the values of the masks.
1373 * Important: The 0xFF80 flags of the first and last entry of a
1374 * block must hold their position (which queue, CLusterEnable, ReJEct,
1375 * AND)
1376 */
1377 static void gfar_sort_mask_table(struct gfar_mask_entry *mask_table,
1378 struct filer_table *temp_table, u32 and_index)
1379 {
1380 /* Pointer to compare function (_asc or _desc) */
1381 int (*gfar_comp)(const void *, const void *);
1382
1383 u32 i, size = 0, start = 0, prev = 1;
1384 u32 old_first, old_last, new_first, new_last;
1385
1386 gfar_comp = &gfar_comp_desc;
1387
1388 for (i = 0; i < and_index; i++) {
1389 if (prev != mask_table[i].block) {
1390 old_first = mask_table[start].start + 1;
1391 old_last = mask_table[i - 1].end;
1392 sort(mask_table + start, size,
1393 sizeof(struct gfar_mask_entry),
1394 gfar_comp, &gfar_swap);
1395
1396 /* Toggle order for every block. This makes the
1397 * thing more efficient!
1398 */
1399 if (gfar_comp == gfar_comp_desc)
1400 gfar_comp = &gfar_comp_asc;
1401 else
1402 gfar_comp = &gfar_comp_desc;
1403
1404 new_first = mask_table[start].start + 1;
1405 new_last = mask_table[i - 1].end;
1406
1407 gfar_swap_bits(&temp_table->fe[new_first],
1408 &temp_table->fe[old_first],
1409 &temp_table->fe[new_last],
1410 &temp_table->fe[old_last],
1411 RQFCR_QUEUE | RQFCR_CLE |
1412 RQFCR_RJE | RQFCR_AND);
1413
1414 start = i;
1415 size = 0;
1416 }
1417 size++;
1418 prev = mask_table[i].block;
1419 }
1420 }
1421
1422 /* Reduces the number of masks needed in the filer table to save entries
1423 * This is done by sorting the masks of a depended block. A depended block is
1424 * identified by gluing ANDs or CLE. The sorting order toggles after every
1425 * block. Of course entries in scope of a mask must change their location with
1426 * it.
1427 */
1428 static int gfar_optimize_filer_masks(struct filer_table *tab)
1429 {
1430 struct filer_table *temp_table;
1431 struct gfar_mask_entry *mask_table;
1432
1433 u32 and_index = 0, previous_mask = 0, i = 0, j = 0, size = 0;
1434 s32 ret = 0;
1435
1436 /* We need a copy of the filer table because
1437 * we want to change its order
1438 */
1439 temp_table = kmemdup(tab, sizeof(*temp_table), GFP_KERNEL);
1440 if (temp_table == NULL)
1441 return -ENOMEM;
1442
1443 mask_table = kcalloc(MAX_FILER_CACHE_IDX / 2 + 1,
1444 sizeof(struct gfar_mask_entry), GFP_KERNEL);
1445
1446 if (mask_table == NULL) {
1447 ret = -ENOMEM;
1448 goto end;
1449 }
1450
1451 and_index = gfar_generate_mask_table(mask_table, tab);
1452
1453 gfar_sort_mask_table(mask_table, temp_table, and_index);
1454
1455 /* Now we can copy the data from our duplicated filer table to
1456 * the real one in the order the mask table says
1457 */
1458 for (i = 0; i < and_index; i++) {
1459 size = mask_table[i].end - mask_table[i].start + 1;
1460 gfar_copy_filer_entries(&(tab->fe[j]),
1461 &(temp_table->fe[mask_table[i].start]), size);
1462 j += size;
1463 }
1464
1465 /* And finally we just have to check for duplicated masks and drop the
1466 * second ones
1467 */
1468 for (i = 0; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1469 if (tab->fe[i].ctrl == 0x80) {
1470 previous_mask = i++;
1471 break;
1472 }
1473 }
1474 for (; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1475 if (tab->fe[i].ctrl == 0x80) {
1476 if (tab->fe[i].prop == tab->fe[previous_mask].prop) {
1477 /* Two identical ones found!
1478 * So drop the second one!
1479 */
1480 gfar_trim_filer_entries(i, i, tab);
1481 } else
1482 /* Not identical! */
1483 previous_mask = i;
1484 }
1485 }
1486
1487 kfree(mask_table);
1488 end: kfree(temp_table);
1489 return ret;
1490 }
1491
1492 /* Write the bit-pattern from software's buffer to hardware registers */
1493 static int gfar_write_filer_table(struct gfar_private *priv,
1494 struct filer_table *tab)
1495 {
1496 u32 i = 0;
1497 if (tab->index > MAX_FILER_IDX - 1)
1498 return -EBUSY;
1499
1500 /* Avoid inconsistent filer table to be processed */
1501 lock_rx_qs(priv);
1502
1503 /* Fill regular entries */
1504 for (; i < MAX_FILER_IDX - 1 && (tab->fe[i].ctrl | tab->fe[i].ctrl);
1505 i++)
1506 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1507 /* Fill the rest with fall-troughs */
1508 for (; i < MAX_FILER_IDX - 1; i++)
1509 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1510 /* Last entry must be default accept
1511 * because that's what people expect
1512 */
1513 gfar_write_filer(priv, i, 0x20, 0x0);
1514
1515 unlock_rx_qs(priv);
1516
1517 return 0;
1518 }
1519
1520 static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1521 struct gfar_private *priv)
1522 {
1523
1524 if (flow->flow_type & FLOW_EXT) {
1525 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1526 netdev_warn(priv->ndev,
1527 "User-specific data not supported!\n");
1528 if (~flow->m_ext.vlan_etype)
1529 netdev_warn(priv->ndev,
1530 "VLAN-etype not supported!\n");
1531 }
1532 if (flow->flow_type == IP_USER_FLOW)
1533 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1534 netdev_warn(priv->ndev,
1535 "IP-Version differing from IPv4 not supported!\n");
1536
1537 return 0;
1538 }
1539
1540 static int gfar_process_filer_changes(struct gfar_private *priv)
1541 {
1542 struct ethtool_flow_spec_container *j;
1543 struct filer_table *tab;
1544 s32 i = 0;
1545 s32 ret = 0;
1546
1547 /* So index is set to zero, too! */
1548 tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1549 if (tab == NULL)
1550 return -ENOMEM;
1551
1552 /* Now convert the existing filer data from flow_spec into
1553 * filer tables binary format
1554 */
1555 list_for_each_entry(j, &priv->rx_list.list, list) {
1556 ret = gfar_convert_to_filer(&j->fs, tab);
1557 if (ret == -EBUSY) {
1558 netdev_err(priv->ndev,
1559 "Rule not added: No free space!\n");
1560 goto end;
1561 }
1562 if (ret == -1) {
1563 netdev_err(priv->ndev,
1564 "Rule not added: Unsupported Flow-type!\n");
1565 goto end;
1566 }
1567 }
1568
1569 i = tab->index;
1570
1571 /* Optimizations to save entries */
1572 gfar_cluster_filer(tab);
1573 gfar_optimize_filer_masks(tab);
1574
1575 pr_debug("\n\tSummary:\n"
1576 "\tData on hardware: %d\n"
1577 "\tCompression rate: %d%%\n",
1578 tab->index, 100 - (100 * tab->index) / i);
1579
1580 /* Write everything to hardware */
1581 ret = gfar_write_filer_table(priv, tab);
1582 if (ret == -EBUSY) {
1583 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1584 goto end;
1585 }
1586
1587 end:
1588 kfree(tab);
1589 return ret;
1590 }
1591
1592 static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1593 {
1594 u32 i = 0;
1595
1596 for (i = 0; i < sizeof(flow->m_u); i++)
1597 flow->m_u.hdata[i] ^= 0xFF;
1598
1599 flow->m_ext.vlan_etype ^= 0xFFFF;
1600 flow->m_ext.vlan_tci ^= 0xFFFF;
1601 flow->m_ext.data[0] ^= ~0;
1602 flow->m_ext.data[1] ^= ~0;
1603 }
1604
1605 static int gfar_add_cls(struct gfar_private *priv,
1606 struct ethtool_rx_flow_spec *flow)
1607 {
1608 struct ethtool_flow_spec_container *temp, *comp;
1609 int ret = 0;
1610
1611 temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1612 if (temp == NULL)
1613 return -ENOMEM;
1614 memcpy(&temp->fs, flow, sizeof(temp->fs));
1615
1616 gfar_invert_masks(&temp->fs);
1617 ret = gfar_check_capability(&temp->fs, priv);
1618 if (ret)
1619 goto clean_mem;
1620 /* Link in the new element at the right @location */
1621 if (list_empty(&priv->rx_list.list)) {
1622 ret = gfar_check_filer_hardware(priv);
1623 if (ret != 0)
1624 goto clean_mem;
1625 list_add(&temp->list, &priv->rx_list.list);
1626 goto process;
1627 } else {
1628 list_for_each_entry(comp, &priv->rx_list.list, list) {
1629 if (comp->fs.location > flow->location) {
1630 list_add_tail(&temp->list, &comp->list);
1631 goto process;
1632 }
1633 if (comp->fs.location == flow->location) {
1634 netdev_err(priv->ndev,
1635 "Rule not added: ID %d not free!\n",
1636 flow->location);
1637 ret = -EBUSY;
1638 goto clean_mem;
1639 }
1640 }
1641 list_add_tail(&temp->list, &priv->rx_list.list);
1642 }
1643
1644 process:
1645 ret = gfar_process_filer_changes(priv);
1646 if (ret)
1647 goto clean_list;
1648 priv->rx_list.count++;
1649 return ret;
1650
1651 clean_list:
1652 list_del(&temp->list);
1653 clean_mem:
1654 kfree(temp);
1655 return ret;
1656 }
1657
1658 static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1659 {
1660 struct ethtool_flow_spec_container *comp;
1661 u32 ret = -EINVAL;
1662
1663 if (list_empty(&priv->rx_list.list))
1664 return ret;
1665
1666 list_for_each_entry(comp, &priv->rx_list.list, list) {
1667 if (comp->fs.location == loc) {
1668 list_del(&comp->list);
1669 kfree(comp);
1670 priv->rx_list.count--;
1671 gfar_process_filer_changes(priv);
1672 ret = 0;
1673 break;
1674 }
1675 }
1676
1677 return ret;
1678 }
1679
1680 static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1681 {
1682 struct ethtool_flow_spec_container *comp;
1683 u32 ret = -EINVAL;
1684
1685 list_for_each_entry(comp, &priv->rx_list.list, list) {
1686 if (comp->fs.location == cmd->fs.location) {
1687 memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1688 gfar_invert_masks(&cmd->fs);
1689 ret = 0;
1690 break;
1691 }
1692 }
1693
1694 return ret;
1695 }
1696
1697 static int gfar_get_cls_all(struct gfar_private *priv,
1698 struct ethtool_rxnfc *cmd, u32 *rule_locs)
1699 {
1700 struct ethtool_flow_spec_container *comp;
1701 u32 i = 0;
1702
1703 list_for_each_entry(comp, &priv->rx_list.list, list) {
1704 if (i == cmd->rule_cnt)
1705 return -EMSGSIZE;
1706 rule_locs[i] = comp->fs.location;
1707 i++;
1708 }
1709
1710 cmd->data = MAX_FILER_IDX;
1711 cmd->rule_cnt = i;
1712
1713 return 0;
1714 }
1715
1716 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1717 {
1718 struct gfar_private *priv = netdev_priv(dev);
1719 int ret = 0;
1720
1721 mutex_lock(&priv->rx_queue_access);
1722
1723 switch (cmd->cmd) {
1724 case ETHTOOL_SRXFH:
1725 ret = gfar_set_hash_opts(priv, cmd);
1726 break;
1727 case ETHTOOL_SRXCLSRLINS:
1728 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1729 cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1730 cmd->fs.location >= MAX_FILER_IDX) {
1731 ret = -EINVAL;
1732 break;
1733 }
1734 ret = gfar_add_cls(priv, &cmd->fs);
1735 break;
1736 case ETHTOOL_SRXCLSRLDEL:
1737 ret = gfar_del_cls(priv, cmd->fs.location);
1738 break;
1739 default:
1740 ret = -EINVAL;
1741 }
1742
1743 mutex_unlock(&priv->rx_queue_access);
1744
1745 return ret;
1746 }
1747
1748 static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1749 u32 *rule_locs)
1750 {
1751 struct gfar_private *priv = netdev_priv(dev);
1752 int ret = 0;
1753
1754 switch (cmd->cmd) {
1755 case ETHTOOL_GRXRINGS:
1756 cmd->data = priv->num_rx_queues;
1757 break;
1758 case ETHTOOL_GRXCLSRLCNT:
1759 cmd->rule_cnt = priv->rx_list.count;
1760 break;
1761 case ETHTOOL_GRXCLSRULE:
1762 ret = gfar_get_cls(priv, cmd);
1763 break;
1764 case ETHTOOL_GRXCLSRLALL:
1765 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1766 break;
1767 default:
1768 ret = -EINVAL;
1769 break;
1770 }
1771
1772 return ret;
1773 }
1774
1775 int gfar_phc_index = -1;
1776 EXPORT_SYMBOL(gfar_phc_index);
1777
1778 static int gfar_get_ts_info(struct net_device *dev,
1779 struct ethtool_ts_info *info)
1780 {
1781 struct gfar_private *priv = netdev_priv(dev);
1782
1783 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1784 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1785 SOF_TIMESTAMPING_SOFTWARE;
1786 info->phc_index = -1;
1787 return 0;
1788 }
1789 info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1790 SOF_TIMESTAMPING_RX_HARDWARE |
1791 SOF_TIMESTAMPING_RAW_HARDWARE;
1792 info->phc_index = gfar_phc_index;
1793 info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1794 (1 << HWTSTAMP_TX_ON);
1795 info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1796 (1 << HWTSTAMP_FILTER_ALL);
1797 return 0;
1798 }
1799
1800 const struct ethtool_ops gfar_ethtool_ops = {
1801 .get_settings = gfar_gsettings,
1802 .set_settings = gfar_ssettings,
1803 .get_drvinfo = gfar_gdrvinfo,
1804 .get_regs_len = gfar_reglen,
1805 .get_regs = gfar_get_regs,
1806 .get_link = ethtool_op_get_link,
1807 .get_coalesce = gfar_gcoalesce,
1808 .set_coalesce = gfar_scoalesce,
1809 .get_ringparam = gfar_gringparam,
1810 .set_ringparam = gfar_sringparam,
1811 .get_strings = gfar_gstrings,
1812 .get_sset_count = gfar_sset_count,
1813 .get_ethtool_stats = gfar_fill_stats,
1814 .get_msglevel = gfar_get_msglevel,
1815 .set_msglevel = gfar_set_msglevel,
1816 #ifdef CONFIG_PM
1817 .get_wol = gfar_get_wol,
1818 .set_wol = gfar_set_wol,
1819 #endif
1820 .set_rxnfc = gfar_set_nfc,
1821 .get_rxnfc = gfar_get_nfc,
1822 .get_ts_info = gfar_get_ts_info,
1823 };
(deprecated) Btrfs devel tree