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classmate-laptop: Added some keys present in other devices
[linux-kbuild.git] / drivers / net / gianfar_ethtool.c
blob1010367695e46c7659704080eb067e90a9784b47
1 /*
2 * drivers/net/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 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 #include <linux/kernel.h>
20 #include <linux/string.h>
21 #include <linux/errno.h>
22 #include <linux/slab.h>
23 #include <linux/interrupt.h>
24 #include <linux/init.h>
25 #include <linux/delay.h>
26 #include <linux/netdevice.h>
27 #include <linux/etherdevice.h>
28 #include <linux/skbuff.h>
29 #include <linux/spinlock.h>
30 #include <linux/mm.h>
31
32 #include <asm/io.h>
33 #include <asm/irq.h>
34 #include <asm/uaccess.h>
35 #include <linux/module.h>
36 #include <linux/crc32.h>
37 #include <asm/types.h>
38 #include <linux/ethtool.h>
39 #include <linux/mii.h>
40 #include <linux/phy.h>
41
42 #include "gianfar.h"
43
44 extern void gfar_start(struct net_device *dev);
45 extern int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit);
46
47 #define GFAR_MAX_COAL_USECS 0xffff
48 #define GFAR_MAX_COAL_FRAMES 0xff
49 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
50 u64 * buf);
51 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
52 static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals);
53 static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals);
54 static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals);
55 static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals);
56 static void gfar_gdrvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo);
57
58 static char stat_gstrings[][ETH_GSTRING_LEN] = {
59 "rx-dropped-by-kernel",
60 "rx-large-frame-errors",
61 "rx-short-frame-errors",
62 "rx-non-octet-errors",
63 "rx-crc-errors",
64 "rx-overrun-errors",
65 "rx-busy-errors",
66 "rx-babbling-errors",
67 "rx-truncated-frames",
68 "ethernet-bus-error",
69 "tx-babbling-errors",
70 "tx-underrun-errors",
71 "rx-skb-missing-errors",
72 "tx-timeout-errors",
73 "tx-rx-64-frames",
74 "tx-rx-65-127-frames",
75 "tx-rx-128-255-frames",
76 "tx-rx-256-511-frames",
77 "tx-rx-512-1023-frames",
78 "tx-rx-1024-1518-frames",
79 "tx-rx-1519-1522-good-vlan",
80 "rx-bytes",
81 "rx-packets",
82 "rx-fcs-errors",
83 "receive-multicast-packet",
84 "receive-broadcast-packet",
85 "rx-control-frame-packets",
86 "rx-pause-frame-packets",
87 "rx-unknown-op-code",
88 "rx-alignment-error",
89 "rx-frame-length-error",
90 "rx-code-error",
91 "rx-carrier-sense-error",
92 "rx-undersize-packets",
93 "rx-oversize-packets",
94 "rx-fragmented-frames",
95 "rx-jabber-frames",
96 "rx-dropped-frames",
97 "tx-byte-counter",
98 "tx-packets",
99 "tx-multicast-packets",
100 "tx-broadcast-packets",
101 "tx-pause-control-frames",
102 "tx-deferral-packets",
103 "tx-excessive-deferral-packets",
104 "tx-single-collision-packets",
105 "tx-multiple-collision-packets",
106 "tx-late-collision-packets",
107 "tx-excessive-collision-packets",
108 "tx-total-collision",
109 "reserved",
110 "tx-dropped-frames",
111 "tx-jabber-frames",
112 "tx-fcs-errors",
113 "tx-control-frames",
114 "tx-oversize-frames",
115 "tx-undersize-frames",
116 "tx-fragmented-frames",
117 };
118
119 /* Fill in a buffer with the strings which correspond to the
120 * stats */
121 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
122 {
123 struct gfar_private *priv = netdev_priv(dev);
124
125 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
126 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
127 else
128 memcpy(buf, stat_gstrings,
129 GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
130 }
131
132 /* Fill in an array of 64-bit statistics from various sources.
133 * This array will be appended to the end of the ethtool_stats
134 * structure, and returned to user space
135 */
136 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy, u64 * buf)
137 {
138 int i;
139 struct gfar_private *priv = netdev_priv(dev);
140 struct gfar __iomem *regs = priv->gfargrp[0].regs;
141 u64 *extra = (u64 *) & priv->extra_stats;
142
143 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
144 u32 __iomem *rmon = (u32 __iomem *) &regs->rmon;
145 struct gfar_stats *stats = (struct gfar_stats *) buf;
146
147 for (i = 0; i < GFAR_RMON_LEN; i++)
148 stats->rmon[i] = (u64) gfar_read(&rmon[i]);
149
150 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
151 stats->extra[i] = extra[i];
152 } else
153 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
154 buf[i] = extra[i];
155 }
156
157 static int gfar_sset_count(struct net_device *dev, int sset)
158 {
159 struct gfar_private *priv = netdev_priv(dev);
160
161 switch (sset) {
162 case ETH_SS_STATS:
163 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
164 return GFAR_STATS_LEN;
165 else
166 return GFAR_EXTRA_STATS_LEN;
167 default:
168 return -EOPNOTSUPP;
169 }
170 }
171
172 /* Fills in the drvinfo structure with some basic info */
173 static void gfar_gdrvinfo(struct net_device *dev, struct
174 ethtool_drvinfo *drvinfo)
175 {
176 strncpy(drvinfo->driver, DRV_NAME, GFAR_INFOSTR_LEN);
177 strncpy(drvinfo->version, gfar_driver_version, GFAR_INFOSTR_LEN);
178 strncpy(drvinfo->fw_version, "N/A", GFAR_INFOSTR_LEN);
179 strncpy(drvinfo->bus_info, "N/A", GFAR_INFOSTR_LEN);
180 drvinfo->regdump_len = 0;
181 drvinfo->eedump_len = 0;
182 }
183
184
185 static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
186 {
187 struct gfar_private *priv = netdev_priv(dev);
188 struct phy_device *phydev = priv->phydev;
189
190 if (NULL == phydev)
191 return -ENODEV;
192
193 return phy_ethtool_sset(phydev, cmd);
194 }
195
196
197 /* Return the current settings in the ethtool_cmd structure */
198 static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
199 {
200 struct gfar_private *priv = netdev_priv(dev);
201 struct phy_device *phydev = priv->phydev;
202 struct gfar_priv_rx_q *rx_queue = NULL;
203 struct gfar_priv_tx_q *tx_queue = NULL;
204
205 if (NULL == phydev)
206 return -ENODEV;
207 tx_queue = priv->tx_queue[0];
208 rx_queue = priv->rx_queue[0];
209
210 /* etsec-1.7 and older versions have only one txic
211 * and rxic regs although they support multiple queues */
212 cmd->maxtxpkt = get_icft_value(tx_queue->txic);
213 cmd->maxrxpkt = get_icft_value(rx_queue->rxic);
214
215 return phy_ethtool_gset(phydev, cmd);
216 }
217
218 /* Return the length of the register structure */
219 static int gfar_reglen(struct net_device *dev)
220 {
221 return sizeof (struct gfar);
222 }
223
224 /* Return a dump of the GFAR register space */
225 static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf)
226 {
227 int i;
228 struct gfar_private *priv = netdev_priv(dev);
229 u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
230 u32 *buf = (u32 *) regbuf;
231
232 for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
233 buf[i] = gfar_read(&theregs[i]);
234 }
235
236 /* Convert microseconds to ethernet clock ticks, which changes
237 * depending on what speed the controller is running at */
238 static unsigned int gfar_usecs2ticks(struct gfar_private *priv, unsigned int usecs)
239 {
240 unsigned int count;
241
242 /* The timer is different, depending on the interface speed */
243 switch (priv->phydev->speed) {
244 case SPEED_1000:
245 count = GFAR_GBIT_TIME;
246 break;
247 case SPEED_100:
248 count = GFAR_100_TIME;
249 break;
250 case SPEED_10:
251 default:
252 count = GFAR_10_TIME;
253 break;
254 }
255
256 /* Make sure we return a number greater than 0
257 * if usecs > 0 */
258 return ((usecs * 1000 + count - 1) / count);
259 }
260
261 /* Convert ethernet clock ticks to microseconds */
262 static unsigned int gfar_ticks2usecs(struct gfar_private *priv, unsigned int ticks)
263 {
264 unsigned int count;
265
266 /* The timer is different, depending on the interface speed */
267 switch (priv->phydev->speed) {
268 case SPEED_1000:
269 count = GFAR_GBIT_TIME;
270 break;
271 case SPEED_100:
272 count = GFAR_100_TIME;
273 break;
274 case SPEED_10:
275 default:
276 count = GFAR_10_TIME;
277 break;
278 }
279
280 /* Make sure we return a number greater than 0 */
281 /* if ticks is > 0 */
282 return ((ticks * count) / 1000);
283 }
284
285 /* Get the coalescing parameters, and put them in the cvals
286 * structure. */
287 static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals)
288 {
289 struct gfar_private *priv = netdev_priv(dev);
290 struct gfar_priv_rx_q *rx_queue = NULL;
291 struct gfar_priv_tx_q *tx_queue = NULL;
292 unsigned long rxtime;
293 unsigned long rxcount;
294 unsigned long txtime;
295 unsigned long txcount;
296
297 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
298 return -EOPNOTSUPP;
299
300 if (NULL == priv->phydev)
301 return -ENODEV;
302
303 rx_queue = priv->rx_queue[0];
304 tx_queue = priv->tx_queue[0];
305
306 rxtime = get_ictt_value(rx_queue->rxic);
307 rxcount = get_icft_value(rx_queue->rxic);
308 txtime = get_ictt_value(tx_queue->txic);
309 txcount = get_icft_value(tx_queue->txic);
310 cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
311 cvals->rx_max_coalesced_frames = rxcount;
312
313 cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
314 cvals->tx_max_coalesced_frames = txcount;
315
316 cvals->use_adaptive_rx_coalesce = 0;
317 cvals->use_adaptive_tx_coalesce = 0;
318
319 cvals->pkt_rate_low = 0;
320 cvals->rx_coalesce_usecs_low = 0;
321 cvals->rx_max_coalesced_frames_low = 0;
322 cvals->tx_coalesce_usecs_low = 0;
323 cvals->tx_max_coalesced_frames_low = 0;
324
325 /* When the packet rate is below pkt_rate_high but above
326 * pkt_rate_low (both measured in packets per second) the
327 * normal {rx,tx}_* coalescing parameters are used.
328 */
329
330 /* When the packet rate is (measured in packets per second)
331 * is above pkt_rate_high, the {rx,tx}_*_high parameters are
332 * used.
333 */
334 cvals->pkt_rate_high = 0;
335 cvals->rx_coalesce_usecs_high = 0;
336 cvals->rx_max_coalesced_frames_high = 0;
337 cvals->tx_coalesce_usecs_high = 0;
338 cvals->tx_max_coalesced_frames_high = 0;
339
340 /* How often to do adaptive coalescing packet rate sampling,
341 * measured in seconds. Must not be zero.
342 */
343 cvals->rate_sample_interval = 0;
344
345 return 0;
346 }
347
348 /* Change the coalescing values.
349 * Both cvals->*_usecs and cvals->*_frames have to be > 0
350 * in order for coalescing to be active
351 */
352 static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals)
353 {
354 struct gfar_private *priv = netdev_priv(dev);
355 int i = 0;
356
357 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
358 return -EOPNOTSUPP;
359
360 /* Set up rx coalescing */
361 /* As of now, we will enable/disable coalescing for all
362 * queues together in case of eTSEC2, this will be modified
363 * along with the ethtool interface */
364 if ((cvals->rx_coalesce_usecs == 0) ||
365 (cvals->rx_max_coalesced_frames == 0)) {
366 for (i = 0; i < priv->num_rx_queues; i++)
367 priv->rx_queue[i]->rxcoalescing = 0;
368 } else {
369 for (i = 0; i < priv->num_rx_queues; i++)
370 priv->rx_queue[i]->rxcoalescing = 1;
371 }
372
373 if (NULL == priv->phydev)
374 return -ENODEV;
375
376 /* Check the bounds of the values */
377 if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
378 pr_info("Coalescing is limited to %d microseconds\n",
379 GFAR_MAX_COAL_USECS);
380 return -EINVAL;
381 }
382
383 if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
384 pr_info("Coalescing is limited to %d frames\n",
385 GFAR_MAX_COAL_FRAMES);
386 return -EINVAL;
387 }
388
389 for (i = 0; i < priv->num_rx_queues; i++) {
390 priv->rx_queue[i]->rxic = mk_ic_value(
391 cvals->rx_max_coalesced_frames,
392 gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
393 }
394
395 /* Set up tx coalescing */
396 if ((cvals->tx_coalesce_usecs == 0) ||
397 (cvals->tx_max_coalesced_frames == 0)) {
398 for (i = 0; i < priv->num_tx_queues; i++)
399 priv->tx_queue[i]->txcoalescing = 0;
400 } else {
401 for (i = 0; i < priv->num_tx_queues; i++)
402 priv->tx_queue[i]->txcoalescing = 1;
403 }
404
405 /* Check the bounds of the values */
406 if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
407 pr_info("Coalescing is limited to %d microseconds\n",
408 GFAR_MAX_COAL_USECS);
409 return -EINVAL;
410 }
411
412 if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
413 pr_info("Coalescing is limited to %d frames\n",
414 GFAR_MAX_COAL_FRAMES);
415 return -EINVAL;
416 }
417
418 for (i = 0; i < priv->num_tx_queues; i++) {
419 priv->tx_queue[i]->txic = mk_ic_value(
420 cvals->tx_max_coalesced_frames,
421 gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
422 }
423
424 gfar_configure_coalescing(priv, 0xFF, 0xFF);
425
426 return 0;
427 }
428
429 /* Fills in rvals with the current ring parameters. Currently,
430 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
431 * jumbo are ignored by the driver */
432 static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals)
433 {
434 struct gfar_private *priv = netdev_priv(dev);
435 struct gfar_priv_tx_q *tx_queue = NULL;
436 struct gfar_priv_rx_q *rx_queue = NULL;
437
438 tx_queue = priv->tx_queue[0];
439 rx_queue = priv->rx_queue[0];
440
441 rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
442 rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
443 rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
444 rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
445
446 /* Values changeable by the user. The valid values are
447 * in the range 1 to the "*_max_pending" counterpart above.
448 */
449 rvals->rx_pending = rx_queue->rx_ring_size;
450 rvals->rx_mini_pending = rx_queue->rx_ring_size;
451 rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
452 rvals->tx_pending = tx_queue->tx_ring_size;
453 }
454
455 /* Change the current ring parameters, stopping the controller if
456 * necessary so that we don't mess things up while we're in
457 * motion. We wait for the ring to be clean before reallocating
458 * the rings. */
459 static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals)
460 {
461 struct gfar_private *priv = netdev_priv(dev);
462 int err = 0, i = 0;
463
464 if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
465 return -EINVAL;
466
467 if (!is_power_of_2(rvals->rx_pending)) {
468 printk("%s: Ring sizes must be a power of 2\n",
469 dev->name);
470 return -EINVAL;
471 }
472
473 if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
474 return -EINVAL;
475
476 if (!is_power_of_2(rvals->tx_pending)) {
477 printk("%s: Ring sizes must be a power of 2\n",
478 dev->name);
479 return -EINVAL;
480 }
481
482
483 if (dev->flags & IFF_UP) {
484 unsigned long flags;
485
486 /* Halt TX and RX, and process the frames which
487 * have already been received */
488 local_irq_save(flags);
489 lock_tx_qs(priv);
490 lock_rx_qs(priv);
491
492 gfar_halt(dev);
493
494 unlock_rx_qs(priv);
495 unlock_tx_qs(priv);
496 local_irq_restore(flags);
497
498 for (i = 0; i < priv->num_rx_queues; i++)
499 gfar_clean_rx_ring(priv->rx_queue[i],
500 priv->rx_queue[i]->rx_ring_size);
501
502 /* Now we take down the rings to rebuild them */
503 stop_gfar(dev);
504 }
505
506 /* Change the size */
507 for (i = 0; i < priv->num_rx_queues; i++) {
508 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
509 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
510 priv->tx_queue[i]->num_txbdfree = priv->tx_queue[i]->tx_ring_size;
511 }
512
513 /* Rebuild the rings with the new size */
514 if (dev->flags & IFF_UP) {
515 err = startup_gfar(dev);
516 netif_tx_wake_all_queues(dev);
517 }
518 return err;
519 }
520
521 static int gfar_set_rx_csum(struct net_device *dev, uint32_t data)
522 {
523 struct gfar_private *priv = netdev_priv(dev);
524 unsigned long flags;
525 int err = 0, i = 0;
526
527 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
528 return -EOPNOTSUPP;
529
530
531 if (dev->flags & IFF_UP) {
532 /* Halt TX and RX, and process the frames which
533 * have already been received */
534 local_irq_save(flags);
535 lock_tx_qs(priv);
536 lock_rx_qs(priv);
537
538 gfar_halt(dev);
539
540 unlock_tx_qs(priv);
541 unlock_rx_qs(priv);
542 local_irq_save(flags);
543
544 for (i = 0; i < priv->num_rx_queues; i++)
545 gfar_clean_rx_ring(priv->rx_queue[i],
546 priv->rx_queue[i]->rx_ring_size);
547
548 /* Now we take down the rings to rebuild them */
549 stop_gfar(dev);
550 }
551
552 spin_lock_irqsave(&priv->bflock, flags);
553 priv->rx_csum_enable = data;
554 spin_unlock_irqrestore(&priv->bflock, flags);
555
556 if (dev->flags & IFF_UP) {
557 err = startup_gfar(dev);
558 netif_tx_wake_all_queues(dev);
559 }
560 return err;
561 }
562
563 static uint32_t gfar_get_rx_csum(struct net_device *dev)
564 {
565 struct gfar_private *priv = netdev_priv(dev);
566
567 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
568 return 0;
569
570 return priv->rx_csum_enable;
571 }
572
573 static int gfar_set_tx_csum(struct net_device *dev, uint32_t data)
574 {
575 struct gfar_private *priv = netdev_priv(dev);
576
577 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
578 return -EOPNOTSUPP;
579
580 netif_tx_lock_bh(dev);
581
582 if (data)
583 dev->features |= NETIF_F_IP_CSUM;
584 else
585 dev->features &= ~NETIF_F_IP_CSUM;
586
587 netif_tx_unlock_bh(dev);
588
589 return 0;
590 }
591
592 static uint32_t gfar_get_tx_csum(struct net_device *dev)
593 {
594 struct gfar_private *priv = netdev_priv(dev);
595
596 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
597 return 0;
598
599 return (dev->features & NETIF_F_IP_CSUM) != 0;
600 }
601
602 static uint32_t gfar_get_msglevel(struct net_device *dev)
603 {
604 struct gfar_private *priv = netdev_priv(dev);
605 return priv->msg_enable;
606 }
607
608 static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
609 {
610 struct gfar_private *priv = netdev_priv(dev);
611 priv->msg_enable = data;
612 }
613
614 #ifdef CONFIG_PM
615 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
616 {
617 struct gfar_private *priv = netdev_priv(dev);
618
619 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) {
620 wol->supported = WAKE_MAGIC;
621 wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0;
622 } else {
623 wol->supported = wol->wolopts = 0;
624 }
625 }
626
627 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
628 {
629 struct gfar_private *priv = netdev_priv(dev);
630 unsigned long flags;
631
632 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
633 wol->wolopts != 0)
634 return -EINVAL;
635
636 if (wol->wolopts & ~WAKE_MAGIC)
637 return -EINVAL;
638
639 spin_lock_irqsave(&priv->bflock, flags);
640 priv->wol_en = wol->wolopts & WAKE_MAGIC ? 1 : 0;
641 device_set_wakeup_enable(&dev->dev, priv->wol_en);
642 spin_unlock_irqrestore(&priv->bflock, flags);
643
644 return 0;
645 }
646 #endif
647
648 static int gfar_ethflow_to_class(int flow_type, u64 *class)
649 {
650 switch (flow_type) {
651 case TCP_V4_FLOW:
652 *class = CLASS_CODE_TCP_IPV4;
653 break;
654 case UDP_V4_FLOW:
655 *class = CLASS_CODE_UDP_IPV4;
656 break;
657 case AH_V4_FLOW:
658 case ESP_V4_FLOW:
659 *class = CLASS_CODE_AH_ESP_IPV4;
660 break;
661 case SCTP_V4_FLOW:
662 *class = CLASS_CODE_SCTP_IPV4;
663 break;
664 case TCP_V6_FLOW:
665 *class = CLASS_CODE_TCP_IPV6;
666 break;
667 case UDP_V6_FLOW:
668 *class = CLASS_CODE_UDP_IPV6;
669 break;
670 case AH_V6_FLOW:
671 case ESP_V6_FLOW:
672 *class = CLASS_CODE_AH_ESP_IPV6;
673 break;
674 case SCTP_V6_FLOW:
675 *class = CLASS_CODE_SCTP_IPV6;
676 break;
677 default:
678 return 0;
679 }
680
681 return 1;
682 }
683
684 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
685 {
686 u32 fcr = 0x0, fpr = FPR_FILER_MASK;
687
688 if (ethflow & RXH_L2DA) {
689 fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH |
690 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
691 ftp_rqfpr[priv->cur_filer_idx] = fpr;
692 ftp_rqfcr[priv->cur_filer_idx] = fcr;
693 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
694 priv->cur_filer_idx = priv->cur_filer_idx - 1;
695
696 fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
697 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
698 ftp_rqfpr[priv->cur_filer_idx] = fpr;
699 ftp_rqfcr[priv->cur_filer_idx] = fcr;
700 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
701 priv->cur_filer_idx = priv->cur_filer_idx - 1;
702 }
703
704 if (ethflow & RXH_VLAN) {
705 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
706 RQFCR_AND | RQFCR_HASHTBL_0;
707 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
708 ftp_rqfpr[priv->cur_filer_idx] = fpr;
709 ftp_rqfcr[priv->cur_filer_idx] = fcr;
710 priv->cur_filer_idx = priv->cur_filer_idx - 1;
711 }
712
713 if (ethflow & RXH_IP_SRC) {
714 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
715 RQFCR_AND | RQFCR_HASHTBL_0;
716 ftp_rqfpr[priv->cur_filer_idx] = fpr;
717 ftp_rqfcr[priv->cur_filer_idx] = fcr;
718 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
719 priv->cur_filer_idx = priv->cur_filer_idx - 1;
720 }
721
722 if (ethflow & (RXH_IP_DST)) {
723 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
724 RQFCR_AND | RQFCR_HASHTBL_0;
725 ftp_rqfpr[priv->cur_filer_idx] = fpr;
726 ftp_rqfcr[priv->cur_filer_idx] = fcr;
727 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
728 priv->cur_filer_idx = priv->cur_filer_idx - 1;
729 }
730
731 if (ethflow & RXH_L3_PROTO) {
732 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
733 RQFCR_AND | RQFCR_HASHTBL_0;
734 ftp_rqfpr[priv->cur_filer_idx] = fpr;
735 ftp_rqfcr[priv->cur_filer_idx] = fcr;
736 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
737 priv->cur_filer_idx = priv->cur_filer_idx - 1;
738 }
739
740 if (ethflow & RXH_L4_B_0_1) {
741 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
742 RQFCR_AND | RQFCR_HASHTBL_0;
743 ftp_rqfpr[priv->cur_filer_idx] = fpr;
744 ftp_rqfcr[priv->cur_filer_idx] = fcr;
745 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
746 priv->cur_filer_idx = priv->cur_filer_idx - 1;
747 }
748
749 if (ethflow & RXH_L4_B_2_3) {
750 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
751 RQFCR_AND | RQFCR_HASHTBL_0;
752 ftp_rqfpr[priv->cur_filer_idx] = fpr;
753 ftp_rqfcr[priv->cur_filer_idx] = fcr;
754 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
755 priv->cur_filer_idx = priv->cur_filer_idx - 1;
756 }
757 }
758
759 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow, u64 class)
760 {
761 unsigned int last_rule_idx = priv->cur_filer_idx;
762 unsigned int cmp_rqfpr;
763 unsigned int local_rqfpr[MAX_FILER_IDX + 1];
764 unsigned int local_rqfcr[MAX_FILER_IDX + 1];
765 int i = 0x0, k = 0x0;
766 int j = MAX_FILER_IDX, l = 0x0;
767
768 switch (class) {
769 case TCP_V4_FLOW:
770 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
771 break;
772 case UDP_V4_FLOW:
773 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
774 break;
775 case TCP_V6_FLOW:
776 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
777 break;
778 case UDP_V6_FLOW:
779 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
780 break;
781 case IPV4_FLOW:
782 cmp_rqfpr = RQFPR_IPV4;
783 case IPV6_FLOW:
784 cmp_rqfpr = RQFPR_IPV6;
785 break;
786 default:
787 printk(KERN_ERR "Right now this class is not supported\n");
788 return 0;
789 }
790
791 for (i = 0; i < MAX_FILER_IDX + 1; i++) {
792 local_rqfpr[j] = ftp_rqfpr[i];
793 local_rqfcr[j] = ftp_rqfcr[i];
794 j--;
795 if ((ftp_rqfcr[i] == (RQFCR_PID_PARSE |
796 RQFCR_CLE |RQFCR_AND)) &&
797 (ftp_rqfpr[i] == cmp_rqfpr))
798 break;
799 }
800
801 if (i == MAX_FILER_IDX + 1) {
802 printk(KERN_ERR "No parse rule found, ");
803 printk(KERN_ERR "can't create hash rules\n");
804 return 0;
805 }
806
807 /* If a match was found, then it begins the starting of a cluster rule
808 * if it was already programmed, we need to overwrite these rules
809 */
810 for (l = i+1; l < MAX_FILER_IDX; l++) {
811 if ((ftp_rqfcr[l] & RQFCR_CLE) &&
812 !(ftp_rqfcr[l] & RQFCR_AND)) {
813 ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
814 RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
815 ftp_rqfpr[l] = FPR_FILER_MASK;
816 gfar_write_filer(priv, l, ftp_rqfcr[l], ftp_rqfpr[l]);
817 break;
818 }
819
820 if (!(ftp_rqfcr[l] & RQFCR_CLE) && (ftp_rqfcr[l] & RQFCR_AND))
821 continue;
822 else {
823 local_rqfpr[j] = ftp_rqfpr[l];
824 local_rqfcr[j] = ftp_rqfcr[l];
825 j--;
826 }
827 }
828
829 priv->cur_filer_idx = l - 1;
830 last_rule_idx = l;
831
832 /* hash rules */
833 ethflow_to_filer_rules(priv, ethflow);
834
835 /* Write back the popped out rules again */
836 for (k = j+1; k < MAX_FILER_IDX; k++) {
837 ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
838 ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
839 gfar_write_filer(priv, priv->cur_filer_idx,
840 local_rqfcr[k], local_rqfpr[k]);
841 if (!priv->cur_filer_idx)
842 break;
843 priv->cur_filer_idx = priv->cur_filer_idx - 1;
844 }
845
846 return 1;
847 }
848
849 static int gfar_set_hash_opts(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
850 {
851 u64 class;
852
853 if (!gfar_ethflow_to_class(cmd->flow_type, &class))
854 return -EINVAL;
855
856 if (class < CLASS_CODE_USER_PROG1 ||
857 class > CLASS_CODE_SCTP_IPV6)
858 return -EINVAL;
859
860 /* write the filer rules here */
861 if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
862 return -1;
863
864 return 0;
865 }
866
867 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
868 {
869 struct gfar_private *priv = netdev_priv(dev);
870 int ret = 0;
871
872 switch(cmd->cmd) {
873 case ETHTOOL_SRXFH:
874 ret = gfar_set_hash_opts(priv, cmd);
875 break;
876 default:
877 ret = -EINVAL;
878 }
879
880 return ret;
881 }
882
883 const struct ethtool_ops gfar_ethtool_ops = {
884 .get_settings = gfar_gsettings,
885 .set_settings = gfar_ssettings,
886 .get_drvinfo = gfar_gdrvinfo,
887 .get_regs_len = gfar_reglen,
888 .get_regs = gfar_get_regs,
889 .get_link = ethtool_op_get_link,
890 .get_coalesce = gfar_gcoalesce,
891 .set_coalesce = gfar_scoalesce,
892 .get_ringparam = gfar_gringparam,
893 .set_ringparam = gfar_sringparam,
894 .get_strings = gfar_gstrings,
895 .get_sset_count = gfar_sset_count,
896 .get_ethtool_stats = gfar_fill_stats,
897 .get_rx_csum = gfar_get_rx_csum,
898 .get_tx_csum = gfar_get_tx_csum,
899 .set_rx_csum = gfar_set_rx_csum,
900 .set_tx_csum = gfar_set_tx_csum,
901 .set_sg = ethtool_op_set_sg,
902 .get_msglevel = gfar_get_msglevel,
903 .set_msglevel = gfar_set_msglevel,
904 #ifdef CONFIG_PM
905 .get_wol = gfar_get_wol,
906 .set_wol = gfar_set_wol,
907 #endif
908 .set_rxnfc = gfar_set_nfc,
909 };
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