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7fa28443c7bc8537da5129ebe63e230a8d73f684
[deliverable/linux.git] / drivers / net / sfc / ethtool.c
1 /****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2005-2006 Fen Systems Ltd.
4 * Copyright 2006-2008 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 "ethtool.h"
19 #include "falcon.h"
20 #include "spi.h"
21 #include "mdio_10g.h"
22
23 const char *efx_loopback_mode_names[] = {
24 [LOOPBACK_NONE] = "NONE",
25 [LOOPBACK_GMAC] = "GMAC",
26 [LOOPBACK_XGMII] = "XGMII",
27 [LOOPBACK_XGXS] = "XGXS",
28 [LOOPBACK_XAUI] = "XAUI",
29 [LOOPBACK_GPHY] = "GPHY",
30 [LOOPBACK_PHYXS] = "PHYXS",
31 [LOOPBACK_PCS] = "PCS",
32 [LOOPBACK_PMAPMD] = "PMA/PMD",
33 [LOOPBACK_NETWORK] = "NETWORK",
34 };
35
36 struct ethtool_string {
37 char name[ETH_GSTRING_LEN];
38 };
39
40 struct efx_ethtool_stat {
41 const char *name;
42 enum {
43 EFX_ETHTOOL_STAT_SOURCE_mac_stats,
44 EFX_ETHTOOL_STAT_SOURCE_nic,
45 EFX_ETHTOOL_STAT_SOURCE_channel
46 } source;
47 unsigned offset;
48 u64(*get_stat) (void *field); /* Reader function */
49 };
50
51 /* Initialiser for a struct #efx_ethtool_stat with type-checking */
52 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
53 get_stat_function) { \
54 .name = #stat_name, \
55 .source = EFX_ETHTOOL_STAT_SOURCE_##source_name, \
56 .offset = ((((field_type *) 0) == \
57 &((struct efx_##source_name *)0)->field) ? \
58 offsetof(struct efx_##source_name, field) : \
59 offsetof(struct efx_##source_name, field)), \
60 .get_stat = get_stat_function, \
61 }
62
63 static u64 efx_get_uint_stat(void *field)
64 {
65 return *(unsigned int *)field;
66 }
67
68 static u64 efx_get_ulong_stat(void *field)
69 {
70 return *(unsigned long *)field;
71 }
72
73 static u64 efx_get_u64_stat(void *field)
74 {
75 return *(u64 *) field;
76 }
77
78 static u64 efx_get_atomic_stat(void *field)
79 {
80 return atomic_read((atomic_t *) field);
81 }
82
83 #define EFX_ETHTOOL_ULONG_MAC_STAT(field) \
84 EFX_ETHTOOL_STAT(field, mac_stats, field, \
85 unsigned long, efx_get_ulong_stat)
86
87 #define EFX_ETHTOOL_U64_MAC_STAT(field) \
88 EFX_ETHTOOL_STAT(field, mac_stats, field, \
89 u64, efx_get_u64_stat)
90
91 #define EFX_ETHTOOL_UINT_NIC_STAT(name) \
92 EFX_ETHTOOL_STAT(name, nic, n_##name, \
93 unsigned int, efx_get_uint_stat)
94
95 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field) \
96 EFX_ETHTOOL_STAT(field, nic, field, \
97 atomic_t, efx_get_atomic_stat)
98
99 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field) \
100 EFX_ETHTOOL_STAT(field, channel, n_##field, \
101 unsigned int, efx_get_uint_stat)
102
103 static struct efx_ethtool_stat efx_ethtool_stats[] = {
104 EFX_ETHTOOL_U64_MAC_STAT(tx_bytes),
105 EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes),
106 EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes),
107 EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets),
108 EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad),
109 EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause),
110 EFX_ETHTOOL_ULONG_MAC_STAT(tx_control),
111 EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast),
112 EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast),
113 EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast),
114 EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64),
115 EFX_ETHTOOL_ULONG_MAC_STAT(tx_64),
116 EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127),
117 EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255),
118 EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511),
119 EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023),
120 EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx),
121 EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo),
122 EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo),
123 EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision),
124 EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision),
125 EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision),
126 EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision),
127 EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred),
128 EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision),
129 EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred),
130 EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp),
131 EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error),
132 EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error),
133 EFX_ETHTOOL_U64_MAC_STAT(rx_bytes),
134 EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes),
135 EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes),
136 EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets),
137 EFX_ETHTOOL_ULONG_MAC_STAT(rx_good),
138 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad),
139 EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause),
140 EFX_ETHTOOL_ULONG_MAC_STAT(rx_control),
141 EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast),
142 EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast),
143 EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast),
144 EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64),
145 EFX_ETHTOOL_ULONG_MAC_STAT(rx_64),
146 EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127),
147 EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255),
148 EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511),
149 EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023),
150 EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx),
151 EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo),
152 EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo),
153 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64),
154 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx),
155 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo),
156 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo),
157 EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow),
158 EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed),
159 EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier),
160 EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error),
161 EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error),
162 EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error),
163 EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error),
164 EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt),
165 EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
166 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
167 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
168 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
169 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
170 };
171
172 /* Number of ethtool statistics */
173 #define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
174
175 #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
176
177 /**************************************************************************
178 *
179 * Ethtool operations
180 *
181 **************************************************************************
182 */
183
184 /* Identify device by flashing LEDs */
185 static int efx_ethtool_phys_id(struct net_device *net_dev, u32 count)
186 {
187 struct efx_nic *efx = netdev_priv(net_dev);
188
189 efx->board_info.blink(efx, 1);
190 set_current_state(TASK_INTERRUPTIBLE);
191 if (count)
192 schedule_timeout(count * HZ);
193 else
194 schedule();
195 efx->board_info.blink(efx, 0);
196 return 0;
197 }
198
199 /* This must be called with rtnl_lock held. */
200 int efx_ethtool_get_settings(struct net_device *net_dev,
201 struct ethtool_cmd *ecmd)
202 {
203 struct efx_nic *efx = netdev_priv(net_dev);
204
205 mutex_lock(&efx->mac_lock);
206 efx->phy_op->get_settings(efx, ecmd);
207 mutex_unlock(&efx->mac_lock);
208
209 /* Falcon GMAC does not support 1000Mbps HD */
210 ecmd->supported &= ~SUPPORTED_1000baseT_Half;
211
212 return 0;
213 }
214
215 /* This must be called with rtnl_lock held. */
216 int efx_ethtool_set_settings(struct net_device *net_dev,
217 struct ethtool_cmd *ecmd)
218 {
219 struct efx_nic *efx = netdev_priv(net_dev);
220 int rc;
221
222 if (EFX_WORKAROUND_13963(efx) && !ecmd->autoneg)
223 return -EINVAL;
224
225 /* Falcon GMAC does not support 1000Mbps HD */
226 if (ecmd->speed == SPEED_1000 && ecmd->duplex != DUPLEX_FULL) {
227 EFX_LOG(efx, "rejecting unsupported 1000Mbps HD"
228 " setting\n");
229 return -EINVAL;
230 }
231
232 mutex_lock(&efx->mac_lock);
233 rc = efx->phy_op->set_settings(efx, ecmd);
234 mutex_unlock(&efx->mac_lock);
235 if (!rc)
236 efx_reconfigure_port(efx);
237
238 return rc;
239 }
240
241 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
242 struct ethtool_drvinfo *info)
243 {
244 struct efx_nic *efx = netdev_priv(net_dev);
245
246 strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver));
247 strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
248 strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
249 }
250
251 /**
252 * efx_fill_test - fill in an individual self-test entry
253 * @test_index: Index of the test
254 * @strings: Ethtool strings, or %NULL
255 * @data: Ethtool test results, or %NULL
256 * @test: Pointer to test result (used only if data != %NULL)
257 * @unit_format: Unit name format (e.g. "chan\%d")
258 * @unit_id: Unit id (e.g. 0 for "chan0")
259 * @test_format: Test name format (e.g. "loopback.\%s.tx.sent")
260 * @test_id: Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
261 *
262 * Fill in an individual self-test entry.
263 */
264 static void efx_fill_test(unsigned int test_index,
265 struct ethtool_string *strings, u64 *data,
266 int *test, const char *unit_format, int unit_id,
267 const char *test_format, const char *test_id)
268 {
269 struct ethtool_string unit_str, test_str;
270
271 /* Fill data value, if applicable */
272 if (data)
273 data[test_index] = *test;
274
275 /* Fill string, if applicable */
276 if (strings) {
277 if (strchr(unit_format, '%'))
278 snprintf(unit_str.name, sizeof(unit_str.name),
279 unit_format, unit_id);
280 else
281 strcpy(unit_str.name, unit_format);
282 snprintf(test_str.name, sizeof(test_str.name),
283 test_format, test_id);
284 snprintf(strings[test_index].name,
285 sizeof(strings[test_index].name),
286 "%-6s %-24s", unit_str.name, test_str.name);
287 }
288 }
289
290 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
291 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
292 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
293 #define EFX_LOOPBACK_NAME(_mode, _counter) \
294 "loopback.%s." _counter, LOOPBACK_MODE_NAME(mode)
295
296 /**
297 * efx_fill_loopback_test - fill in a block of loopback self-test entries
298 * @efx: Efx NIC
299 * @lb_tests: Efx loopback self-test results structure
300 * @mode: Loopback test mode
301 * @test_index: Starting index of the test
302 * @strings: Ethtool strings, or %NULL
303 * @data: Ethtool test results, or %NULL
304 */
305 static int efx_fill_loopback_test(struct efx_nic *efx,
306 struct efx_loopback_self_tests *lb_tests,
307 enum efx_loopback_mode mode,
308 unsigned int test_index,
309 struct ethtool_string *strings, u64 *data)
310 {
311 struct efx_tx_queue *tx_queue;
312
313 efx_for_each_tx_queue(tx_queue, efx) {
314 efx_fill_test(test_index++, strings, data,
315 &lb_tests->tx_sent[tx_queue->queue],
316 EFX_TX_QUEUE_NAME(tx_queue),
317 EFX_LOOPBACK_NAME(mode, "tx_sent"));
318 efx_fill_test(test_index++, strings, data,
319 &lb_tests->tx_done[tx_queue->queue],
320 EFX_TX_QUEUE_NAME(tx_queue),
321 EFX_LOOPBACK_NAME(mode, "tx_done"));
322 }
323 efx_fill_test(test_index++, strings, data,
324 &lb_tests->rx_good,
325 "rx", 0,
326 EFX_LOOPBACK_NAME(mode, "rx_good"));
327 efx_fill_test(test_index++, strings, data,
328 &lb_tests->rx_bad,
329 "rx", 0,
330 EFX_LOOPBACK_NAME(mode, "rx_bad"));
331
332 return test_index;
333 }
334
335 /**
336 * efx_ethtool_fill_self_tests - get self-test details
337 * @efx: Efx NIC
338 * @tests: Efx self-test results structure, or %NULL
339 * @strings: Ethtool strings, or %NULL
340 * @data: Ethtool test results, or %NULL
341 */
342 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
343 struct efx_self_tests *tests,
344 struct ethtool_string *strings,
345 u64 *data)
346 {
347 struct efx_channel *channel;
348 unsigned int n = 0;
349 enum efx_loopback_mode mode;
350
351 efx_fill_test(n++, strings, data, &tests->mii,
352 "core", 0, "mii", NULL);
353 efx_fill_test(n++, strings, data, &tests->nvram,
354 "core", 0, "nvram", NULL);
355 efx_fill_test(n++, strings, data, &tests->interrupt,
356 "core", 0, "interrupt", NULL);
357
358 /* Event queues */
359 efx_for_each_channel(channel, efx) {
360 efx_fill_test(n++, strings, data,
361 &tests->eventq_dma[channel->channel],
362 EFX_CHANNEL_NAME(channel),
363 "eventq.dma", NULL);
364 efx_fill_test(n++, strings, data,
365 &tests->eventq_int[channel->channel],
366 EFX_CHANNEL_NAME(channel),
367 "eventq.int", NULL);
368 efx_fill_test(n++, strings, data,
369 &tests->eventq_poll[channel->channel],
370 EFX_CHANNEL_NAME(channel),
371 "eventq.poll", NULL);
372 }
373
374 efx_fill_test(n++, strings, data, &tests->registers,
375 "core", 0, "registers", NULL);
376 efx_fill_test(n++, strings, data, &tests->phy,
377 "phy", 0, "bist", NULL);
378
379 /* Loopback tests */
380 for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
381 if (!(efx->loopback_modes & (1 << mode)))
382 continue;
383 n = efx_fill_loopback_test(efx,
384 &tests->loopback[mode], mode, n,
385 strings, data);
386 }
387
388 return n;
389 }
390
391 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
392 int string_set)
393 {
394 switch (string_set) {
395 case ETH_SS_STATS:
396 return EFX_ETHTOOL_NUM_STATS;
397 case ETH_SS_TEST:
398 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
399 NULL, NULL, NULL);
400 default:
401 return -EINVAL;
402 }
403 }
404
405 static void efx_ethtool_get_strings(struct net_device *net_dev,
406 u32 string_set, u8 *strings)
407 {
408 struct efx_nic *efx = netdev_priv(net_dev);
409 struct ethtool_string *ethtool_strings =
410 (struct ethtool_string *)strings;
411 int i;
412
413 switch (string_set) {
414 case ETH_SS_STATS:
415 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
416 strncpy(ethtool_strings[i].name,
417 efx_ethtool_stats[i].name,
418 sizeof(ethtool_strings[i].name));
419 break;
420 case ETH_SS_TEST:
421 efx_ethtool_fill_self_tests(efx, NULL,
422 ethtool_strings, NULL);
423 break;
424 default:
425 /* No other string sets */
426 break;
427 }
428 }
429
430 static void efx_ethtool_get_stats(struct net_device *net_dev,
431 struct ethtool_stats *stats,
432 u64 *data)
433 {
434 struct efx_nic *efx = netdev_priv(net_dev);
435 struct efx_mac_stats *mac_stats = &efx->mac_stats;
436 struct efx_ethtool_stat *stat;
437 struct efx_channel *channel;
438 int i;
439
440 EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
441
442 /* Update MAC and NIC statistics */
443 dev_get_stats(net_dev);
444
445 /* Fill detailed statistics buffer */
446 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
447 stat = &efx_ethtool_stats[i];
448 switch (stat->source) {
449 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
450 data[i] = stat->get_stat((void *)mac_stats +
451 stat->offset);
452 break;
453 case EFX_ETHTOOL_STAT_SOURCE_nic:
454 data[i] = stat->get_stat((void *)efx + stat->offset);
455 break;
456 case EFX_ETHTOOL_STAT_SOURCE_channel:
457 data[i] = 0;
458 efx_for_each_channel(channel, efx)
459 data[i] += stat->get_stat((void *)channel +
460 stat->offset);
461 break;
462 }
463 }
464 }
465
466 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
467 {
468 struct efx_nic *efx = netdev_priv(net_dev);
469
470 /* No way to stop the hardware doing the checks; we just
471 * ignore the result.
472 */
473 efx->rx_checksum_enabled = !!enable;
474
475 return 0;
476 }
477
478 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
479 {
480 struct efx_nic *efx = netdev_priv(net_dev);
481
482 return efx->rx_checksum_enabled;
483 }
484
485 static void efx_ethtool_self_test(struct net_device *net_dev,
486 struct ethtool_test *test, u64 *data)
487 {
488 struct efx_nic *efx = netdev_priv(net_dev);
489 struct efx_self_tests efx_tests;
490 int already_up;
491 int rc;
492
493 ASSERT_RTNL();
494 if (efx->state != STATE_RUNNING) {
495 rc = -EIO;
496 goto fail1;
497 }
498
499 /* We need rx buffers and interrupts. */
500 already_up = (efx->net_dev->flags & IFF_UP);
501 if (!already_up) {
502 rc = dev_open(efx->net_dev);
503 if (rc) {
504 EFX_ERR(efx, "failed opening device.\n");
505 goto fail2;
506 }
507 }
508
509 memset(&efx_tests, 0, sizeof(efx_tests));
510
511 rc = efx_selftest(efx, &efx_tests, test->flags);
512
513 if (!already_up)
514 dev_close(efx->net_dev);
515
516 EFX_LOG(efx, "%s %sline self-tests\n",
517 rc == 0 ? "passed" : "failed",
518 (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
519
520 fail2:
521 fail1:
522 /* Fill ethtool results structures */
523 efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
524 if (rc)
525 test->flags |= ETH_TEST_FL_FAILED;
526 }
527
528 /* Restart autonegotiation */
529 static int efx_ethtool_nway_reset(struct net_device *net_dev)
530 {
531 struct efx_nic *efx = netdev_priv(net_dev);
532
533 return mii_nway_restart(&efx->mii);
534 }
535
536 static u32 efx_ethtool_get_link(struct net_device *net_dev)
537 {
538 struct efx_nic *efx = netdev_priv(net_dev);
539
540 return efx->link_up;
541 }
542
543 static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
544 {
545 struct efx_nic *efx = netdev_priv(net_dev);
546 struct efx_spi_device *spi = efx->spi_eeprom;
547
548 if (!spi)
549 return 0;
550 return min(spi->size, EFX_EEPROM_BOOTCONFIG_END) -
551 min(spi->size, EFX_EEPROM_BOOTCONFIG_START);
552 }
553
554 static int efx_ethtool_get_eeprom(struct net_device *net_dev,
555 struct ethtool_eeprom *eeprom, u8 *buf)
556 {
557 struct efx_nic *efx = netdev_priv(net_dev);
558 struct efx_spi_device *spi = efx->spi_eeprom;
559 size_t len;
560 int rc;
561
562 rc = mutex_lock_interruptible(&efx->spi_lock);
563 if (rc)
564 return rc;
565 rc = falcon_spi_read(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
566 eeprom->len, &len, buf);
567 mutex_unlock(&efx->spi_lock);
568
569 eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC;
570 eeprom->len = len;
571 return rc;
572 }
573
574 static int efx_ethtool_set_eeprom(struct net_device *net_dev,
575 struct ethtool_eeprom *eeprom, u8 *buf)
576 {
577 struct efx_nic *efx = netdev_priv(net_dev);
578 struct efx_spi_device *spi = efx->spi_eeprom;
579 size_t len;
580 int rc;
581
582 if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC)
583 return -EINVAL;
584
585 rc = mutex_lock_interruptible(&efx->spi_lock);
586 if (rc)
587 return rc;
588 rc = falcon_spi_write(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
589 eeprom->len, &len, buf);
590 mutex_unlock(&efx->spi_lock);
591
592 eeprom->len = len;
593 return rc;
594 }
595
596 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
597 struct ethtool_coalesce *coalesce)
598 {
599 struct efx_nic *efx = netdev_priv(net_dev);
600 struct efx_tx_queue *tx_queue;
601 struct efx_rx_queue *rx_queue;
602 struct efx_channel *channel;
603
604 memset(coalesce, 0, sizeof(*coalesce));
605
606 /* Find lowest IRQ moderation across all used TX queues */
607 coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
608 efx_for_each_tx_queue(tx_queue, efx) {
609 channel = tx_queue->channel;
610 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
611 if (channel->used_flags != EFX_USED_BY_RX_TX)
612 coalesce->tx_coalesce_usecs_irq =
613 channel->irq_moderation;
614 else
615 coalesce->tx_coalesce_usecs_irq = 0;
616 }
617 }
618
619 /* Find lowest IRQ moderation across all used RX queues */
620 coalesce->rx_coalesce_usecs_irq = ~((u32) 0);
621 efx_for_each_rx_queue(rx_queue, efx) {
622 channel = rx_queue->channel;
623 if (channel->irq_moderation < coalesce->rx_coalesce_usecs_irq)
624 coalesce->rx_coalesce_usecs_irq =
625 channel->irq_moderation;
626 }
627
628 return 0;
629 }
630
631 /* Set coalescing parameters
632 * The difficulties occur for shared channels
633 */
634 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
635 struct ethtool_coalesce *coalesce)
636 {
637 struct efx_nic *efx = netdev_priv(net_dev);
638 struct efx_channel *channel;
639 struct efx_tx_queue *tx_queue;
640 unsigned tx_usecs, rx_usecs;
641
642 if (coalesce->use_adaptive_rx_coalesce ||
643 coalesce->use_adaptive_tx_coalesce)
644 return -EOPNOTSUPP;
645
646 if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
647 EFX_ERR(efx, "invalid coalescing setting. "
648 "Only rx/tx_coalesce_usecs_irq are supported\n");
649 return -EOPNOTSUPP;
650 }
651
652 rx_usecs = coalesce->rx_coalesce_usecs_irq;
653 tx_usecs = coalesce->tx_coalesce_usecs_irq;
654
655 /* If the channel is shared only allow RX parameters to be set */
656 efx_for_each_tx_queue(tx_queue, efx) {
657 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
658 tx_usecs) {
659 EFX_ERR(efx, "Channel is shared. "
660 "Only RX coalescing may be set\n");
661 return -EOPNOTSUPP;
662 }
663 }
664
665 efx_init_irq_moderation(efx, tx_usecs, rx_usecs);
666
667 /* Reset channel to pick up new moderation value. Note that
668 * this may change the value of the irq_moderation field
669 * (e.g. to allow for hardware timer granularity).
670 */
671 efx_for_each_channel(channel, efx)
672 falcon_set_int_moderation(channel);
673
674 return 0;
675 }
676
677 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
678 struct ethtool_pauseparam *pause)
679 {
680 struct efx_nic *efx = netdev_priv(net_dev);
681 enum efx_fc_type wanted_fc;
682 bool reset;
683
684 wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
685 (pause->tx_pause ? EFX_FC_TX : 0) |
686 (pause->autoneg ? EFX_FC_AUTO : 0));
687
688 if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
689 EFX_LOG(efx, "Flow control unsupported: tx ON rx OFF\n");
690 return -EINVAL;
691 }
692
693 if (!(efx->phy_op->mmds & DEV_PRESENT_BIT(MDIO_MMD_AN)) &&
694 (wanted_fc & EFX_FC_AUTO)) {
695 EFX_LOG(efx, "PHY does not support flow control "
696 "autonegotiation\n");
697 return -EINVAL;
698 }
699
700 /* TX flow control may automatically turn itself off if the
701 * link partner (intermittently) stops responding to pause
702 * frames. There isn't any indication that this has happened,
703 * so the best we do is leave it up to the user to spot this
704 * and fix it be cycling transmit flow control on this end. */
705 reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
706 if (EFX_WORKAROUND_11482(efx) && reset) {
707 if (falcon_rev(efx) >= FALCON_REV_B0) {
708 /* Recover by resetting the EM block */
709 if (efx->link_up)
710 falcon_drain_tx_fifo(efx);
711 } else {
712 /* Schedule a reset to recover */
713 efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
714 }
715 }
716
717 /* Try to push the pause parameters */
718 mutex_lock(&efx->mac_lock);
719
720 efx->wanted_fc = wanted_fc;
721 mdio_clause45_set_pause(efx);
722 __efx_reconfigure_port(efx);
723
724 mutex_unlock(&efx->mac_lock);
725
726 return 0;
727 }
728
729 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
730 struct ethtool_pauseparam *pause)
731 {
732 struct efx_nic *efx = netdev_priv(net_dev);
733
734 pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
735 pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
736 pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
737 }
738
739
740 struct ethtool_ops efx_ethtool_ops = {
741 .get_settings = efx_ethtool_get_settings,
742 .set_settings = efx_ethtool_set_settings,
743 .get_drvinfo = efx_ethtool_get_drvinfo,
744 .nway_reset = efx_ethtool_nway_reset,
745 .get_link = efx_ethtool_get_link,
746 .get_eeprom_len = efx_ethtool_get_eeprom_len,
747 .get_eeprom = efx_ethtool_get_eeprom,
748 .set_eeprom = efx_ethtool_set_eeprom,
749 .get_coalesce = efx_ethtool_get_coalesce,
750 .set_coalesce = efx_ethtool_set_coalesce,
751 .get_pauseparam = efx_ethtool_get_pauseparam,
752 .set_pauseparam = efx_ethtool_set_pauseparam,
753 .get_rx_csum = efx_ethtool_get_rx_csum,
754 .set_rx_csum = efx_ethtool_set_rx_csum,
755 .get_tx_csum = ethtool_op_get_tx_csum,
756 .set_tx_csum = ethtool_op_set_tx_csum,
757 .get_sg = ethtool_op_get_sg,
758 .set_sg = ethtool_op_set_sg,
759 .get_tso = ethtool_op_get_tso,
760 .set_tso = ethtool_op_set_tso,
761 .get_flags = ethtool_op_get_flags,
762 .set_flags = ethtool_op_set_flags,
763 .get_sset_count = efx_ethtool_get_sset_count,
764 .self_test = efx_ethtool_self_test,
765 .get_strings = efx_ethtool_get_strings,
766 .phys_id = efx_ethtool_phys_id,
767 .get_ethtool_stats = efx_ethtool_get_stats,
768 };
Linux kernel - Deliverables
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