tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2005-2006 Fen Systems Ltd.
4 * Copyright 2006-2009 Solarflare Communications Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation, incorporated herein by reference.
9 */
10
11#include <linux/netdevice.h>
12#include <linux/ethtool.h>
13#include <linux/rtnetlink.h>
14#include "net_driver.h"
15#include "workarounds.h"
16#include "selftest.h"
17#include "efx.h"
18#include "nic.h"
19#include "spi.h"
20#include "mdio_10g.h"
21
22struct ethtool_string {
23 char name[ETH_GSTRING_LEN];
24};
25
26struct efx_ethtool_stat {
27 const char *name;
28 enum {
29 EFX_ETHTOOL_STAT_SOURCE_mac_stats,
30 EFX_ETHTOOL_STAT_SOURCE_nic,
31 EFX_ETHTOOL_STAT_SOURCE_channel
32 } source;
33 unsigned offset;
34 u64(*get_stat) (void *field); /* Reader function */
35};
36
37/* Initialiser for a struct #efx_ethtool_stat with type-checking */
38#define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
39 get_stat_function) { \
40 .name = #stat_name, \
41 .source = EFX_ETHTOOL_STAT_SOURCE_##source_name, \
42 .offset = ((((field_type *) 0) == \
43 &((struct efx_##source_name *)0)->field) ? \
44 offsetof(struct efx_##source_name, field) : \
45 offsetof(struct efx_##source_name, field)), \
46 .get_stat = get_stat_function, \
47}
48
49static u64 efx_get_uint_stat(void *field)
50{
51 return *(unsigned int *)field;
52}
53
54static u64 efx_get_ulong_stat(void *field)
55{
56 return *(unsigned long *)field;
57}
58
59static u64 efx_get_u64_stat(void *field)
60{
61 return *(u64 *) field;
62}
63
64static u64 efx_get_atomic_stat(void *field)
65{
66 return atomic_read((atomic_t *) field);
67}
68
69#define EFX_ETHTOOL_ULONG_MAC_STAT(field) \
70 EFX_ETHTOOL_STAT(field, mac_stats, field, \
71 unsigned long, efx_get_ulong_stat)
72
73#define EFX_ETHTOOL_U64_MAC_STAT(field) \
74 EFX_ETHTOOL_STAT(field, mac_stats, field, \
75 u64, efx_get_u64_stat)
76
77#define EFX_ETHTOOL_UINT_NIC_STAT(name) \
78 EFX_ETHTOOL_STAT(name, nic, n_##name, \
79 unsigned int, efx_get_uint_stat)
80
81#define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field) \
82 EFX_ETHTOOL_STAT(field, nic, field, \
83 atomic_t, efx_get_atomic_stat)
84
85#define EFX_ETHTOOL_UINT_CHANNEL_STAT(field) \
86 EFX_ETHTOOL_STAT(field, channel, n_##field, \
87 unsigned int, efx_get_uint_stat)
88
89static struct efx_ethtool_stat efx_ethtool_stats[] = {
90 EFX_ETHTOOL_U64_MAC_STAT(tx_bytes),
91 EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes),
92 EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes),
93 EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets),
94 EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad),
95 EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause),
96 EFX_ETHTOOL_ULONG_MAC_STAT(tx_control),
97 EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast),
98 EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast),
99 EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast),
100 EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64),
101 EFX_ETHTOOL_ULONG_MAC_STAT(tx_64),
102 EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127),
103 EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255),
104 EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511),
105 EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023),
106 EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx),
107 EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo),
108 EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo),
109 EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision),
110 EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision),
111 EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision),
112 EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision),
113 EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred),
114 EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision),
115 EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred),
116 EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp),
117 EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error),
118 EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error),
119 EFX_ETHTOOL_U64_MAC_STAT(rx_bytes),
120 EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes),
121 EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes),
122 EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets),
123 EFX_ETHTOOL_ULONG_MAC_STAT(rx_good),
124 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad),
125 EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause),
126 EFX_ETHTOOL_ULONG_MAC_STAT(rx_control),
127 EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast),
128 EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast),
129 EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast),
130 EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64),
131 EFX_ETHTOOL_ULONG_MAC_STAT(rx_64),
132 EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127),
133 EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255),
134 EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511),
135 EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023),
136 EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx),
137 EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo),
138 EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo),
139 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64),
140 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx),
141 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo),
142 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo),
143 EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow),
144 EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed),
145 EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier),
146 EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error),
147 EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error),
148 EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error),
149 EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error),
150 EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt),
151 EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
152 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
153 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
154 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
155 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_mcast_mismatch),
156 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
157};
158
159/* Number of ethtool statistics */
160#define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
161
162#define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
163
164/**************************************************************************
165 *
166 * Ethtool operations
167 *
168 **************************************************************************
169 */
170
171/* Identify device by flashing LEDs */
172static int efx_ethtool_phys_id(struct net_device *net_dev, u32 count)
173{
174 struct efx_nic *efx = netdev_priv(net_dev);
175
176 do {
177 efx->type->set_id_led(efx, EFX_LED_ON);
178 schedule_timeout_interruptible(HZ / 2);
179
180 efx->type->set_id_led(efx, EFX_LED_OFF);
181 schedule_timeout_interruptible(HZ / 2);
182 } while (!signal_pending(current) && --count != 0);
183
184 efx->type->set_id_led(efx, EFX_LED_DEFAULT);
185 return 0;
186}
187
188/* This must be called with rtnl_lock held. */
189int efx_ethtool_get_settings(struct net_device *net_dev,
190 struct ethtool_cmd *ecmd)
191{
192 struct efx_nic *efx = netdev_priv(net_dev);
193 struct efx_link_state *link_state = &efx->link_state;
194
195 mutex_lock(&efx->mac_lock);
196 efx->phy_op->get_settings(efx, ecmd);
197 mutex_unlock(&efx->mac_lock);
198
199 /* GMAC does not support 1000Mbps HD */
200 ecmd->supported &= ~SUPPORTED_1000baseT_Half;
201 /* Both MACs support pause frames (bidirectional and respond-only) */
202 ecmd->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
203
204 if (LOOPBACK_INTERNAL(efx)) {
205 ecmd->speed = link_state->speed;
206 ecmd->duplex = link_state->fd ? DUPLEX_FULL : DUPLEX_HALF;
207 }
208
209 return 0;
210}
211
212/* This must be called with rtnl_lock held. */
213int efx_ethtool_set_settings(struct net_device *net_dev,
214 struct ethtool_cmd *ecmd)
215{
216 struct efx_nic *efx = netdev_priv(net_dev);
217 int rc;
218
219 /* GMAC does not support 1000Mbps HD */
220 if (ecmd->speed == SPEED_1000 && ecmd->duplex != DUPLEX_FULL) {
221 EFX_LOG(efx, "rejecting unsupported 1000Mbps HD"
222 " setting\n");
223 return -EINVAL;
224 }
225
226 mutex_lock(&efx->mac_lock);
227 rc = efx->phy_op->set_settings(efx, ecmd);
228 mutex_unlock(&efx->mac_lock);
229 return rc;
230}
231
232static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
233 struct ethtool_drvinfo *info)
234{
235 struct efx_nic *efx = netdev_priv(net_dev);
236
237 strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver));
238 strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
239 if (efx_nic_rev(efx) >= EFX_REV_SIENA_A0)
240 siena_print_fwver(efx, info->fw_version,
241 sizeof(info->fw_version));
242 strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
243}
244
245/**
246 * efx_fill_test - fill in an individual self-test entry
247 * @test_index: Index of the test
248 * @strings: Ethtool strings, or %NULL
249 * @data: Ethtool test results, or %NULL
250 * @test: Pointer to test result (used only if data != %NULL)
251 * @unit_format: Unit name format (e.g. "chan\%d")
252 * @unit_id: Unit id (e.g. 0 for "chan0")
253 * @test_format: Test name format (e.g. "loopback.\%s.tx.sent")
254 * @test_id: Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
255 *
256 * Fill in an individual self-test entry.
257 */
258static void efx_fill_test(unsigned int test_index,
259 struct ethtool_string *strings, u64 *data,
260 int *test, const char *unit_format, int unit_id,
261 const char *test_format, const char *test_id)
262{
263 struct ethtool_string unit_str, test_str;
264
265 /* Fill data value, if applicable */
266 if (data)
267 data[test_index] = *test;
268
269 /* Fill string, if applicable */
270 if (strings) {
271 if (strchr(unit_format, '%'))
272 snprintf(unit_str.name, sizeof(unit_str.name),
273 unit_format, unit_id);
274 else
275 strcpy(unit_str.name, unit_format);
276 snprintf(test_str.name, sizeof(test_str.name),
277 test_format, test_id);
278 snprintf(strings[test_index].name,
279 sizeof(strings[test_index].name),
280 "%-6s %-24s", unit_str.name, test_str.name);
281 }
282}
283
284#define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
285#define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
286#define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
287#define EFX_LOOPBACK_NAME(_mode, _counter) \
288 "loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
289
290/**
291 * efx_fill_loopback_test - fill in a block of loopback self-test entries
292 * @efx: Efx NIC
293 * @lb_tests: Efx loopback self-test results structure
294 * @mode: Loopback test mode
295 * @test_index: Starting index of the test
296 * @strings: Ethtool strings, or %NULL
297 * @data: Ethtool test results, or %NULL
298 */
299static int efx_fill_loopback_test(struct efx_nic *efx,
300 struct efx_loopback_self_tests *lb_tests,
301 enum efx_loopback_mode mode,
302 unsigned int test_index,
303 struct ethtool_string *strings, u64 *data)
304{
305 struct efx_tx_queue *tx_queue;
306
307 efx_for_each_channel_tx_queue(tx_queue, &efx->channel[0]) {
308 efx_fill_test(test_index++, strings, data,
309 &lb_tests->tx_sent[tx_queue->queue],
310 EFX_TX_QUEUE_NAME(tx_queue),
311 EFX_LOOPBACK_NAME(mode, "tx_sent"));
312 efx_fill_test(test_index++, strings, data,
313 &lb_tests->tx_done[tx_queue->queue],
314 EFX_TX_QUEUE_NAME(tx_queue),
315 EFX_LOOPBACK_NAME(mode, "tx_done"));
316 }
317 efx_fill_test(test_index++, strings, data,
318 &lb_tests->rx_good,
319 "rx", 0,
320 EFX_LOOPBACK_NAME(mode, "rx_good"));
321 efx_fill_test(test_index++, strings, data,
322 &lb_tests->rx_bad,
323 "rx", 0,
324 EFX_LOOPBACK_NAME(mode, "rx_bad"));
325
326 return test_index;
327}
328
329/**
330 * efx_ethtool_fill_self_tests - get self-test details
331 * @efx: Efx NIC
332 * @tests: Efx self-test results structure, or %NULL
333 * @strings: Ethtool strings, or %NULL
334 * @data: Ethtool test results, or %NULL
335 */
336static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
337 struct efx_self_tests *tests,
338 struct ethtool_string *strings,
339 u64 *data)
340{
341 struct efx_channel *channel;
342 unsigned int n = 0, i;
343 enum efx_loopback_mode mode;
344
345 efx_fill_test(n++, strings, data, &tests->phy_alive,
346 "phy", 0, "alive", NULL);
347 efx_fill_test(n++, strings, data, &tests->nvram,
348 "core", 0, "nvram", NULL);
349 efx_fill_test(n++, strings, data, &tests->interrupt,
350 "core", 0, "interrupt", NULL);
351
352 /* Event queues */
353 efx_for_each_channel(channel, efx) {
354 efx_fill_test(n++, strings, data,
355 &tests->eventq_dma[channel->channel],
356 EFX_CHANNEL_NAME(channel),
357 "eventq.dma", NULL);
358 efx_fill_test(n++, strings, data,
359 &tests->eventq_int[channel->channel],
360 EFX_CHANNEL_NAME(channel),
361 "eventq.int", NULL);
362 efx_fill_test(n++, strings, data,
363 &tests->eventq_poll[channel->channel],
364 EFX_CHANNEL_NAME(channel),
365 "eventq.poll", NULL);
366 }
367
368 efx_fill_test(n++, strings, data, &tests->registers,
369 "core", 0, "registers", NULL);
370
371 if (efx->phy_op->run_tests != NULL) {
372 EFX_BUG_ON_PARANOID(efx->phy_op->test_name == NULL);
373
374 for (i = 0; true; ++i) {
375 const char *name;
376
377 EFX_BUG_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
378 name = efx->phy_op->test_name(efx, i);
379 if (name == NULL)
380 break;
381
382 efx_fill_test(n++, strings, data, &tests->phy_ext[i],
383 "phy", 0, name, NULL);
384 }
385 }
386
387 /* Loopback tests */
388 for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
389 if (!(efx->loopback_modes & (1 << mode)))
390 continue;
391 n = efx_fill_loopback_test(efx,
392 &tests->loopback[mode], mode, n,
393 strings, data);
394 }
395
396 return n;
397}
398
399static int efx_ethtool_get_sset_count(struct net_device *net_dev,
400 int string_set)
401{
402 switch (string_set) {
403 case ETH_SS_STATS:
404 return EFX_ETHTOOL_NUM_STATS;
405 case ETH_SS_TEST:
406 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
407 NULL, NULL, NULL);
408 default:
409 return -EINVAL;
410 }
411}
412
413static void efx_ethtool_get_strings(struct net_device *net_dev,
414 u32 string_set, u8 *strings)
415{
416 struct efx_nic *efx = netdev_priv(net_dev);
417 struct ethtool_string *ethtool_strings =
418 (struct ethtool_string *)strings;
419 int i;
420
421 switch (string_set) {
422 case ETH_SS_STATS:
423 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
424 strncpy(ethtool_strings[i].name,
425 efx_ethtool_stats[i].name,
426 sizeof(ethtool_strings[i].name));
427 break;
428 case ETH_SS_TEST:
429 efx_ethtool_fill_self_tests(efx, NULL,
430 ethtool_strings, NULL);
431 break;
432 default:
433 /* No other string sets */
434 break;
435 }
436}
437
438static void efx_ethtool_get_stats(struct net_device *net_dev,
439 struct ethtool_stats *stats,
440 u64 *data)
441{
442 struct efx_nic *efx = netdev_priv(net_dev);
443 struct efx_mac_stats *mac_stats = &efx->mac_stats;
444 struct efx_ethtool_stat *stat;
445 struct efx_channel *channel;
446 int i;
447
448 EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
449
450 /* Update MAC and NIC statistics */
451 dev_get_stats(net_dev);
452
453 /* Fill detailed statistics buffer */
454 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
455 stat = &efx_ethtool_stats[i];
456 switch (stat->source) {
457 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
458 data[i] = stat->get_stat((void *)mac_stats +
459 stat->offset);
460 break;
461 case EFX_ETHTOOL_STAT_SOURCE_nic:
462 data[i] = stat->get_stat((void *)efx + stat->offset);
463 break;
464 case EFX_ETHTOOL_STAT_SOURCE_channel:
465 data[i] = 0;
466 efx_for_each_channel(channel, efx)
467 data[i] += stat->get_stat((void *)channel +
468 stat->offset);
469 break;
470 }
471 }
472}
473
474static int efx_ethtool_set_tso(struct net_device *net_dev, u32 enable)
475{
476 struct efx_nic *efx __attribute__ ((unused)) = netdev_priv(net_dev);
477 unsigned long features;
478
479 features = NETIF_F_TSO;
480 if (efx->type->offload_features & NETIF_F_V6_CSUM)
481 features |= NETIF_F_TSO6;
482
483 if (enable)
484 net_dev->features |= features;
485 else
486 net_dev->features &= ~features;
487
488 return 0;
489}
490
491static int efx_ethtool_set_tx_csum(struct net_device *net_dev, u32 enable)
492{
493 struct efx_nic *efx = netdev_priv(net_dev);
494 unsigned long features = efx->type->offload_features & NETIF_F_ALL_CSUM;
495
496 if (enable)
497 net_dev->features |= features;
498 else
499 net_dev->features &= ~features;
500
501 return 0;
502}
503
504static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
505{
506 struct efx_nic *efx = netdev_priv(net_dev);
507
508 /* No way to stop the hardware doing the checks; we just
509 * ignore the result.
510 */
511 efx->rx_checksum_enabled = !!enable;
512
513 return 0;
514}
515
516static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
517{
518 struct efx_nic *efx = netdev_priv(net_dev);
519
520 return efx->rx_checksum_enabled;
521}
522
523static void efx_ethtool_self_test(struct net_device *net_dev,
524 struct ethtool_test *test, u64 *data)
525{
526 struct efx_nic *efx = netdev_priv(net_dev);
527 struct efx_self_tests efx_tests;
528 int already_up;
529 int rc;
530
531 ASSERT_RTNL();
532 if (efx->state != STATE_RUNNING) {
533 rc = -EIO;
534 goto fail1;
535 }
536
537 /* We need rx buffers and interrupts. */
538 already_up = (efx->net_dev->flags & IFF_UP);
539 if (!already_up) {
540 rc = dev_open(efx->net_dev);
541 if (rc) {
542 EFX_ERR(efx, "failed opening device.\n");
543 goto fail2;
544 }
545 }
546
547 memset(&efx_tests, 0, sizeof(efx_tests));
548
549 rc = efx_selftest(efx, &efx_tests, test->flags);
550
551 if (!already_up)
552 dev_close(efx->net_dev);
553
554 EFX_LOG(efx, "%s %sline self-tests\n",
555 rc == 0 ? "passed" : "failed",
556 (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
557
558 fail2:
559 fail1:
560 /* Fill ethtool results structures */
561 efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
562 if (rc)
563 test->flags |= ETH_TEST_FL_FAILED;
564}
565
566/* Restart autonegotiation */
567static int efx_ethtool_nway_reset(struct net_device *net_dev)
568{
569 struct efx_nic *efx = netdev_priv(net_dev);
570
571 return mdio45_nway_restart(&efx->mdio);
572}
573
574static u32 efx_ethtool_get_link(struct net_device *net_dev)
575{
576 struct efx_nic *efx = netdev_priv(net_dev);
577
578 return efx->link_state.up;
579}
580
581static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
582{
583 struct efx_nic *efx = netdev_priv(net_dev);
584 struct efx_spi_device *spi = efx->spi_eeprom;
585
586 if (!spi)
587 return 0;
588 return min(spi->size, EFX_EEPROM_BOOTCONFIG_END) -
589 min(spi->size, EFX_EEPROM_BOOTCONFIG_START);
590}
591
592static int efx_ethtool_get_eeprom(struct net_device *net_dev,
593 struct ethtool_eeprom *eeprom, u8 *buf)
594{
595 struct efx_nic *efx = netdev_priv(net_dev);
596 struct efx_spi_device *spi = efx->spi_eeprom;
597 size_t len;
598 int rc;
599
600 rc = mutex_lock_interruptible(&efx->spi_lock);
601 if (rc)
602 return rc;
603 rc = falcon_spi_read(efx, spi,
604 eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
605 eeprom->len, &len, buf);
606 mutex_unlock(&efx->spi_lock);
607
608 eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC;
609 eeprom->len = len;
610 return rc;
611}
612
613static int efx_ethtool_set_eeprom(struct net_device *net_dev,
614 struct ethtool_eeprom *eeprom, u8 *buf)
615{
616 struct efx_nic *efx = netdev_priv(net_dev);
617 struct efx_spi_device *spi = efx->spi_eeprom;
618 size_t len;
619 int rc;
620
621 if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC)
622 return -EINVAL;
623
624 rc = mutex_lock_interruptible(&efx->spi_lock);
625 if (rc)
626 return rc;
627 rc = falcon_spi_write(efx, spi,
628 eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
629 eeprom->len, &len, buf);
630 mutex_unlock(&efx->spi_lock);
631
632 eeprom->len = len;
633 return rc;
634}
635
636static int efx_ethtool_get_coalesce(struct net_device *net_dev,
637 struct ethtool_coalesce *coalesce)
638{
639 struct efx_nic *efx = netdev_priv(net_dev);
640 struct efx_tx_queue *tx_queue;
641 struct efx_channel *channel;
642
643 memset(coalesce, 0, sizeof(*coalesce));
644
645 /* Find lowest IRQ moderation across all used TX queues */
646 coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
647 efx_for_each_tx_queue(tx_queue, efx) {
648 channel = tx_queue->channel;
649 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
650 if (channel->channel < efx->n_rx_channels)
651 coalesce->tx_coalesce_usecs_irq =
652 channel->irq_moderation;
653 else
654 coalesce->tx_coalesce_usecs_irq = 0;
655 }
656 }
657
658 coalesce->use_adaptive_rx_coalesce = efx->irq_rx_adaptive;
659 coalesce->rx_coalesce_usecs_irq = efx->irq_rx_moderation;
660
661 coalesce->tx_coalesce_usecs_irq *= EFX_IRQ_MOD_RESOLUTION;
662 coalesce->rx_coalesce_usecs_irq *= EFX_IRQ_MOD_RESOLUTION;
663
664 return 0;
665}
666
667/* Set coalescing parameters
668 * The difficulties occur for shared channels
669 */
670static int efx_ethtool_set_coalesce(struct net_device *net_dev,
671 struct ethtool_coalesce *coalesce)
672{
673 struct efx_nic *efx = netdev_priv(net_dev);
674 struct efx_channel *channel;
675 struct efx_tx_queue *tx_queue;
676 unsigned tx_usecs, rx_usecs, adaptive;
677
678 if (coalesce->use_adaptive_tx_coalesce)
679 return -EOPNOTSUPP;
680
681 if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
682 EFX_ERR(efx, "invalid coalescing setting. "
683 "Only rx/tx_coalesce_usecs_irq are supported\n");
684 return -EOPNOTSUPP;
685 }
686
687 rx_usecs = coalesce->rx_coalesce_usecs_irq;
688 tx_usecs = coalesce->tx_coalesce_usecs_irq;
689 adaptive = coalesce->use_adaptive_rx_coalesce;
690
691 /* If the channel is shared only allow RX parameters to be set */
692 efx_for_each_tx_queue(tx_queue, efx) {
693 if ((tx_queue->channel->channel < efx->n_rx_channels) &&
694 tx_usecs) {
695 EFX_ERR(efx, "Channel is shared. "
696 "Only RX coalescing may be set\n");
697 return -EOPNOTSUPP;
698 }
699 }
700
701 efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive);
702 efx_for_each_channel(channel, efx)
703 efx->type->push_irq_moderation(channel);
704
705 return 0;
706}
707
708static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
709 struct ethtool_pauseparam *pause)
710{
711 struct efx_nic *efx = netdev_priv(net_dev);
712 enum efx_fc_type wanted_fc, old_fc;
713 u32 old_adv;
714 bool reset;
715 int rc = 0;
716
717 mutex_lock(&efx->mac_lock);
718
719 wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
720 (pause->tx_pause ? EFX_FC_TX : 0) |
721 (pause->autoneg ? EFX_FC_AUTO : 0));
722
723 if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
724 EFX_LOG(efx, "Flow control unsupported: tx ON rx OFF\n");
725 rc = -EINVAL;
726 goto out;
727 }
728
729 if ((wanted_fc & EFX_FC_AUTO) && !efx->link_advertising) {
730 EFX_LOG(efx, "Autonegotiation is disabled\n");
731 rc = -EINVAL;
732 goto out;
733 }
734
735 /* TX flow control may automatically turn itself off if the
736 * link partner (intermittently) stops responding to pause
737 * frames. There isn't any indication that this has happened,
738 * so the best we do is leave it up to the user to spot this
739 * and fix it be cycling transmit flow control on this end. */
740 reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
741 if (EFX_WORKAROUND_11482(efx) && reset) {
742 if (efx_nic_rev(efx) == EFX_REV_FALCON_B0) {
743 /* Recover by resetting the EM block */
744 falcon_stop_nic_stats(efx);
745 falcon_drain_tx_fifo(efx);
746 efx->mac_op->reconfigure(efx);
747 falcon_start_nic_stats(efx);
748 } else {
749 /* Schedule a reset to recover */
750 efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
751 }
752 }
753
754 old_adv = efx->link_advertising;
755 old_fc = efx->wanted_fc;
756 efx_link_set_wanted_fc(efx, wanted_fc);
757 if (efx->link_advertising != old_adv ||
758 (efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) {
759 rc = efx->phy_op->reconfigure(efx);
760 if (rc) {
761 EFX_ERR(efx, "Unable to advertise requested flow "
762 "control setting\n");
763 goto out;
764 }
765 }
766
767 /* Reconfigure the MAC. The PHY *may* generate a link state change event
768 * if the user just changed the advertised capabilities, but there's no
769 * harm doing this twice */
770 efx->mac_op->reconfigure(efx);
771
772out:
773 mutex_unlock(&efx->mac_lock);
774
775 return rc;
776}
777
778static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
779 struct ethtool_pauseparam *pause)
780{
781 struct efx_nic *efx = netdev_priv(net_dev);
782
783 pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
784 pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
785 pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
786}
787
788
789static void efx_ethtool_get_wol(struct net_device *net_dev,
790 struct ethtool_wolinfo *wol)
791{
792 struct efx_nic *efx = netdev_priv(net_dev);
793 return efx->type->get_wol(efx, wol);
794}
795
796
797static int efx_ethtool_set_wol(struct net_device *net_dev,
798 struct ethtool_wolinfo *wol)
799{
800 struct efx_nic *efx = netdev_priv(net_dev);
801 return efx->type->set_wol(efx, wol->wolopts);
802}
803
804extern int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
805{
806 struct efx_nic *efx = netdev_priv(net_dev);
807 enum reset_type method;
808 enum {
809 ETH_RESET_EFX_INVISIBLE = (ETH_RESET_DMA | ETH_RESET_FILTER |
810 ETH_RESET_OFFLOAD | ETH_RESET_MAC)
811 };
812
813 /* Check for minimal reset flags */
814 if ((*flags & ETH_RESET_EFX_INVISIBLE) != ETH_RESET_EFX_INVISIBLE)
815 return -EINVAL;
816 *flags ^= ETH_RESET_EFX_INVISIBLE;
817 method = RESET_TYPE_INVISIBLE;
818
819 if (*flags & ETH_RESET_PHY) {
820 *flags ^= ETH_RESET_PHY;
821 method = RESET_TYPE_ALL;
822 }
823
824 if ((*flags & efx->type->reset_world_flags) ==
825 efx->type->reset_world_flags) {
826 *flags ^= efx->type->reset_world_flags;
827 method = RESET_TYPE_WORLD;
828 }
829
830 return efx_reset(efx, method);
831}
832
833const struct ethtool_ops efx_ethtool_ops = {
834 .get_settings = efx_ethtool_get_settings,
835 .set_settings = efx_ethtool_set_settings,
836 .get_drvinfo = efx_ethtool_get_drvinfo,
837 .nway_reset = efx_ethtool_nway_reset,
838 .get_link = efx_ethtool_get_link,
839 .get_eeprom_len = efx_ethtool_get_eeprom_len,
840 .get_eeprom = efx_ethtool_get_eeprom,
841 .set_eeprom = efx_ethtool_set_eeprom,
842 .get_coalesce = efx_ethtool_get_coalesce,
843 .set_coalesce = efx_ethtool_set_coalesce,
844 .get_pauseparam = efx_ethtool_get_pauseparam,
845 .set_pauseparam = efx_ethtool_set_pauseparam,
846 .get_rx_csum = efx_ethtool_get_rx_csum,
847 .set_rx_csum = efx_ethtool_set_rx_csum,
848 .get_tx_csum = ethtool_op_get_tx_csum,
849 /* Need to enable/disable IPv6 too */
850 .set_tx_csum = efx_ethtool_set_tx_csum,
851 .get_sg = ethtool_op_get_sg,
852 .set_sg = ethtool_op_set_sg,
853 .get_tso = ethtool_op_get_tso,
854 /* Need to enable/disable TSO-IPv6 too */
855 .set_tso = efx_ethtool_set_tso,
856 .get_flags = ethtool_op_get_flags,
857 .set_flags = ethtool_op_set_flags,
858 .get_sset_count = efx_ethtool_get_sset_count,
859 .self_test = efx_ethtool_self_test,
860 .get_strings = efx_ethtool_get_strings,
861 .phys_id = efx_ethtool_phys_id,
862 .get_ethtool_stats = efx_ethtool_get_stats,
863 .get_wol = efx_ethtool_get_wol,
864 .set_wol = efx_ethtool_set_wol,
865 .reset = efx_ethtool_reset,
866};