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
efx_get_uint_stat(void * field)63 static u64 efx_get_uint_stat(void *field)
64 {
65 return *(unsigned int *)field;
66 }
67
efx_get_ulong_stat(void * field)68 static u64 efx_get_ulong_stat(void *field)
69 {
70 return *(unsigned long *)field;
71 }
72
efx_get_u64_stat(void * field)73 static u64 efx_get_u64_stat(void *field)
74 {
75 return *(u64 *) field;
76 }
77
efx_get_atomic_stat(void * field)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 */
efx_ethtool_phys_id(struct net_device * net_dev,u32 count)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. */
efx_ethtool_get_settings(struct net_device * net_dev,struct ethtool_cmd * ecmd)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. */
efx_ethtool_set_settings(struct net_device * net_dev,struct ethtool_cmd * ecmd)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 /* Falcon GMAC does not support 1000Mbps HD */
223 if (ecmd->speed == SPEED_1000 && ecmd->duplex != DUPLEX_FULL) {
224 EFX_LOG(efx, "rejecting unsupported 1000Mbps HD"
225 " setting\n");
226 return -EINVAL;
227 }
228
229 mutex_lock(&efx->mac_lock);
230 rc = efx->phy_op->set_settings(efx, ecmd);
231 mutex_unlock(&efx->mac_lock);
232 if (!rc)
233 efx_reconfigure_port(efx);
234
235 return rc;
236 }
237
efx_ethtool_get_drvinfo(struct net_device * net_dev,struct ethtool_drvinfo * info)238 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
239 struct ethtool_drvinfo *info)
240 {
241 struct efx_nic *efx = netdev_priv(net_dev);
242
243 strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver));
244 strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
245 strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
246 }
247
248 /**
249 * efx_fill_test - fill in an individual self-test entry
250 * @test_index: Index of the test
251 * @strings: Ethtool strings, or %NULL
252 * @data: Ethtool test results, or %NULL
253 * @test: Pointer to test result (used only if data != %NULL)
254 * @unit_format: Unit name format (e.g. "chan\%d")
255 * @unit_id: Unit id (e.g. 0 for "chan0")
256 * @test_format: Test name format (e.g. "loopback.\%s.tx.sent")
257 * @test_id: Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
258 *
259 * Fill in an individual self-test entry.
260 */
efx_fill_test(unsigned int test_index,struct ethtool_string * strings,u64 * data,int * test,const char * unit_format,int unit_id,const char * test_format,const char * test_id)261 static void efx_fill_test(unsigned int test_index,
262 struct ethtool_string *strings, u64 *data,
263 int *test, const char *unit_format, int unit_id,
264 const char *test_format, const char *test_id)
265 {
266 struct ethtool_string unit_str, test_str;
267
268 /* Fill data value, if applicable */
269 if (data)
270 data[test_index] = *test;
271
272 /* Fill string, if applicable */
273 if (strings) {
274 if (strchr(unit_format, '%'))
275 snprintf(unit_str.name, sizeof(unit_str.name),
276 unit_format, unit_id);
277 else
278 strcpy(unit_str.name, unit_format);
279 snprintf(test_str.name, sizeof(test_str.name),
280 test_format, test_id);
281 snprintf(strings[test_index].name,
282 sizeof(strings[test_index].name),
283 "%-6s %-24s", unit_str.name, test_str.name);
284 }
285 }
286
287 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
288 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
289 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
290 #define EFX_LOOPBACK_NAME(_mode, _counter) \
291 "loopback.%s." _counter, LOOPBACK_MODE_NAME(mode)
292
293 /**
294 * efx_fill_loopback_test - fill in a block of loopback self-test entries
295 * @efx: Efx NIC
296 * @lb_tests: Efx loopback self-test results structure
297 * @mode: Loopback test mode
298 * @test_index: Starting index of the test
299 * @strings: Ethtool strings, or %NULL
300 * @data: Ethtool test results, or %NULL
301 */
efx_fill_loopback_test(struct efx_nic * efx,struct efx_loopback_self_tests * lb_tests,enum efx_loopback_mode mode,unsigned int test_index,struct ethtool_string * strings,u64 * data)302 static int efx_fill_loopback_test(struct efx_nic *efx,
303 struct efx_loopback_self_tests *lb_tests,
304 enum efx_loopback_mode mode,
305 unsigned int test_index,
306 struct ethtool_string *strings, u64 *data)
307 {
308 struct efx_tx_queue *tx_queue;
309
310 efx_for_each_tx_queue(tx_queue, efx) {
311 efx_fill_test(test_index++, strings, data,
312 &lb_tests->tx_sent[tx_queue->queue],
313 EFX_TX_QUEUE_NAME(tx_queue),
314 EFX_LOOPBACK_NAME(mode, "tx_sent"));
315 efx_fill_test(test_index++, strings, data,
316 &lb_tests->tx_done[tx_queue->queue],
317 EFX_TX_QUEUE_NAME(tx_queue),
318 EFX_LOOPBACK_NAME(mode, "tx_done"));
319 }
320 efx_fill_test(test_index++, strings, data,
321 &lb_tests->rx_good,
322 "rx", 0,
323 EFX_LOOPBACK_NAME(mode, "rx_good"));
324 efx_fill_test(test_index++, strings, data,
325 &lb_tests->rx_bad,
326 "rx", 0,
327 EFX_LOOPBACK_NAME(mode, "rx_bad"));
328
329 return test_index;
330 }
331
332 /**
333 * efx_ethtool_fill_self_tests - get self-test details
334 * @efx: Efx NIC
335 * @tests: Efx self-test results structure, or %NULL
336 * @strings: Ethtool strings, or %NULL
337 * @data: Ethtool test results, or %NULL
338 */
efx_ethtool_fill_self_tests(struct efx_nic * efx,struct efx_self_tests * tests,struct ethtool_string * strings,u64 * data)339 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
340 struct efx_self_tests *tests,
341 struct ethtool_string *strings,
342 u64 *data)
343 {
344 struct efx_channel *channel;
345 unsigned int n = 0, i;
346 enum efx_loopback_mode mode;
347
348 efx_fill_test(n++, strings, data, &tests->mii,
349 "core", 0, "mii", NULL);
350 efx_fill_test(n++, strings, data, &tests->nvram,
351 "core", 0, "nvram", NULL);
352 efx_fill_test(n++, strings, data, &tests->interrupt,
353 "core", 0, "interrupt", NULL);
354
355 /* Event queues */
356 efx_for_each_channel(channel, efx) {
357 efx_fill_test(n++, strings, data,
358 &tests->eventq_dma[channel->channel],
359 EFX_CHANNEL_NAME(channel),
360 "eventq.dma", NULL);
361 efx_fill_test(n++, strings, data,
362 &tests->eventq_int[channel->channel],
363 EFX_CHANNEL_NAME(channel),
364 "eventq.int", NULL);
365 efx_fill_test(n++, strings, data,
366 &tests->eventq_poll[channel->channel],
367 EFX_CHANNEL_NAME(channel),
368 "eventq.poll", NULL);
369 }
370
371 efx_fill_test(n++, strings, data, &tests->registers,
372 "core", 0, "registers", NULL);
373
374 for (i = 0; i < efx->phy_op->num_tests; i++)
375 efx_fill_test(n++, strings, data, &tests->phy[i],
376 "phy", 0, efx->phy_op->test_names[i], NULL);
377
378 /* Loopback tests */
379 for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
380 if (!(efx->loopback_modes & (1 << mode)))
381 continue;
382 n = efx_fill_loopback_test(efx,
383 &tests->loopback[mode], mode, n,
384 strings, data);
385 }
386
387 return n;
388 }
389
efx_ethtool_get_sset_count(struct net_device * net_dev,int string_set)390 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
391 int string_set)
392 {
393 switch (string_set) {
394 case ETH_SS_STATS:
395 return EFX_ETHTOOL_NUM_STATS;
396 case ETH_SS_TEST:
397 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
398 NULL, NULL, NULL);
399 default:
400 return -EINVAL;
401 }
402 }
403
efx_ethtool_get_strings(struct net_device * net_dev,u32 string_set,u8 * strings)404 static void efx_ethtool_get_strings(struct net_device *net_dev,
405 u32 string_set, u8 *strings)
406 {
407 struct efx_nic *efx = netdev_priv(net_dev);
408 struct ethtool_string *ethtool_strings =
409 (struct ethtool_string *)strings;
410 int i;
411
412 switch (string_set) {
413 case ETH_SS_STATS:
414 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
415 strncpy(ethtool_strings[i].name,
416 efx_ethtool_stats[i].name,
417 sizeof(ethtool_strings[i].name));
418 break;
419 case ETH_SS_TEST:
420 efx_ethtool_fill_self_tests(efx, NULL,
421 ethtool_strings, NULL);
422 break;
423 default:
424 /* No other string sets */
425 break;
426 }
427 }
428
efx_ethtool_get_stats(struct net_device * net_dev,struct ethtool_stats * stats,u64 * data)429 static void efx_ethtool_get_stats(struct net_device *net_dev,
430 struct ethtool_stats *stats,
431 u64 *data)
432 {
433 struct efx_nic *efx = netdev_priv(net_dev);
434 struct efx_mac_stats *mac_stats = &efx->mac_stats;
435 struct efx_ethtool_stat *stat;
436 struct efx_channel *channel;
437 int i;
438
439 EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
440
441 /* Update MAC and NIC statistics */
442 dev_get_stats(net_dev);
443
444 /* Fill detailed statistics buffer */
445 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
446 stat = &efx_ethtool_stats[i];
447 switch (stat->source) {
448 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
449 data[i] = stat->get_stat((void *)mac_stats +
450 stat->offset);
451 break;
452 case EFX_ETHTOOL_STAT_SOURCE_nic:
453 data[i] = stat->get_stat((void *)efx + stat->offset);
454 break;
455 case EFX_ETHTOOL_STAT_SOURCE_channel:
456 data[i] = 0;
457 efx_for_each_channel(channel, efx)
458 data[i] += stat->get_stat((void *)channel +
459 stat->offset);
460 break;
461 }
462 }
463 }
464
efx_ethtool_set_rx_csum(struct net_device * net_dev,u32 enable)465 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
466 {
467 struct efx_nic *efx = netdev_priv(net_dev);
468
469 /* No way to stop the hardware doing the checks; we just
470 * ignore the result.
471 */
472 efx->rx_checksum_enabled = !!enable;
473
474 return 0;
475 }
476
efx_ethtool_get_rx_csum(struct net_device * net_dev)477 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
478 {
479 struct efx_nic *efx = netdev_priv(net_dev);
480
481 return efx->rx_checksum_enabled;
482 }
483
efx_ethtool_self_test(struct net_device * net_dev,struct ethtool_test * test,u64 * data)484 static void efx_ethtool_self_test(struct net_device *net_dev,
485 struct ethtool_test *test, u64 *data)
486 {
487 struct efx_nic *efx = netdev_priv(net_dev);
488 struct efx_self_tests efx_tests;
489 int already_up;
490 int rc;
491
492 ASSERT_RTNL();
493 if (efx->state != STATE_RUNNING) {
494 rc = -EIO;
495 goto fail1;
496 }
497
498 /* We need rx buffers and interrupts. */
499 already_up = (efx->net_dev->flags & IFF_UP);
500 if (!already_up) {
501 rc = dev_open(efx->net_dev);
502 if (rc) {
503 EFX_ERR(efx, "failed opening device.\n");
504 goto fail2;
505 }
506 }
507
508 memset(&efx_tests, 0, sizeof(efx_tests));
509
510 rc = efx_selftest(efx, &efx_tests, test->flags);
511
512 if (!already_up)
513 dev_close(efx->net_dev);
514
515 EFX_LOG(efx, "%s %sline self-tests\n",
516 rc == 0 ? "passed" : "failed",
517 (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
518
519 fail2:
520 fail1:
521 /* Fill ethtool results structures */
522 efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
523 if (rc)
524 test->flags |= ETH_TEST_FL_FAILED;
525 }
526
527 /* Restart autonegotiation */
efx_ethtool_nway_reset(struct net_device * net_dev)528 static int efx_ethtool_nway_reset(struct net_device *net_dev)
529 {
530 struct efx_nic *efx = netdev_priv(net_dev);
531
532 return mii_nway_restart(&efx->mii);
533 }
534
efx_ethtool_get_link(struct net_device * net_dev)535 static u32 efx_ethtool_get_link(struct net_device *net_dev)
536 {
537 struct efx_nic *efx = netdev_priv(net_dev);
538
539 return efx->link_up;
540 }
541
efx_ethtool_get_eeprom_len(struct net_device * net_dev)542 static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
543 {
544 struct efx_nic *efx = netdev_priv(net_dev);
545 struct efx_spi_device *spi = efx->spi_eeprom;
546
547 if (!spi)
548 return 0;
549 return min(spi->size, EFX_EEPROM_BOOTCONFIG_END) -
550 min(spi->size, EFX_EEPROM_BOOTCONFIG_START);
551 }
552
efx_ethtool_get_eeprom(struct net_device * net_dev,struct ethtool_eeprom * eeprom,u8 * buf)553 static int efx_ethtool_get_eeprom(struct net_device *net_dev,
554 struct ethtool_eeprom *eeprom, u8 *buf)
555 {
556 struct efx_nic *efx = netdev_priv(net_dev);
557 struct efx_spi_device *spi = efx->spi_eeprom;
558 size_t len;
559 int rc;
560
561 rc = mutex_lock_interruptible(&efx->spi_lock);
562 if (rc)
563 return rc;
564 rc = falcon_spi_read(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
565 eeprom->len, &len, buf);
566 mutex_unlock(&efx->spi_lock);
567
568 eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC;
569 eeprom->len = len;
570 return rc;
571 }
572
efx_ethtool_set_eeprom(struct net_device * net_dev,struct ethtool_eeprom * eeprom,u8 * buf)573 static int efx_ethtool_set_eeprom(struct net_device *net_dev,
574 struct ethtool_eeprom *eeprom, u8 *buf)
575 {
576 struct efx_nic *efx = netdev_priv(net_dev);
577 struct efx_spi_device *spi = efx->spi_eeprom;
578 size_t len;
579 int rc;
580
581 if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC)
582 return -EINVAL;
583
584 rc = mutex_lock_interruptible(&efx->spi_lock);
585 if (rc)
586 return rc;
587 rc = falcon_spi_write(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
588 eeprom->len, &len, buf);
589 mutex_unlock(&efx->spi_lock);
590
591 eeprom->len = len;
592 return rc;
593 }
594
efx_ethtool_get_coalesce(struct net_device * net_dev,struct ethtool_coalesce * coalesce)595 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
596 struct ethtool_coalesce *coalesce)
597 {
598 struct efx_nic *efx = netdev_priv(net_dev);
599 struct efx_tx_queue *tx_queue;
600 struct efx_rx_queue *rx_queue;
601 struct efx_channel *channel;
602
603 memset(coalesce, 0, sizeof(*coalesce));
604
605 /* Find lowest IRQ moderation across all used TX queues */
606 coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
607 efx_for_each_tx_queue(tx_queue, efx) {
608 channel = tx_queue->channel;
609 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
610 if (channel->used_flags != EFX_USED_BY_RX_TX)
611 coalesce->tx_coalesce_usecs_irq =
612 channel->irq_moderation;
613 else
614 coalesce->tx_coalesce_usecs_irq = 0;
615 }
616 }
617
618 /* Find lowest IRQ moderation across all used RX queues */
619 coalesce->rx_coalesce_usecs_irq = ~((u32) 0);
620 efx_for_each_rx_queue(rx_queue, efx) {
621 channel = rx_queue->channel;
622 if (channel->irq_moderation < coalesce->rx_coalesce_usecs_irq)
623 coalesce->rx_coalesce_usecs_irq =
624 channel->irq_moderation;
625 }
626
627 return 0;
628 }
629
630 /* Set coalescing parameters
631 * The difficulties occur for shared channels
632 */
efx_ethtool_set_coalesce(struct net_device * net_dev,struct ethtool_coalesce * coalesce)633 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
634 struct ethtool_coalesce *coalesce)
635 {
636 struct efx_nic *efx = netdev_priv(net_dev);
637 struct efx_channel *channel;
638 struct efx_tx_queue *tx_queue;
639 unsigned tx_usecs, rx_usecs;
640
641 if (coalesce->use_adaptive_rx_coalesce ||
642 coalesce->use_adaptive_tx_coalesce)
643 return -EOPNOTSUPP;
644
645 if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
646 EFX_ERR(efx, "invalid coalescing setting. "
647 "Only rx/tx_coalesce_usecs_irq are supported\n");
648 return -EOPNOTSUPP;
649 }
650
651 rx_usecs = coalesce->rx_coalesce_usecs_irq;
652 tx_usecs = coalesce->tx_coalesce_usecs_irq;
653
654 /* If the channel is shared only allow RX parameters to be set */
655 efx_for_each_tx_queue(tx_queue, efx) {
656 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
657 tx_usecs) {
658 EFX_ERR(efx, "Channel is shared. "
659 "Only RX coalescing may be set\n");
660 return -EOPNOTSUPP;
661 }
662 }
663
664 efx_init_irq_moderation(efx, tx_usecs, rx_usecs);
665
666 /* Reset channel to pick up new moderation value. Note that
667 * this may change the value of the irq_moderation field
668 * (e.g. to allow for hardware timer granularity).
669 */
670 efx_for_each_channel(channel, efx)
671 falcon_set_int_moderation(channel);
672
673 return 0;
674 }
675
efx_ethtool_set_pauseparam(struct net_device * net_dev,struct ethtool_pauseparam * pause)676 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
677 struct ethtool_pauseparam *pause)
678 {
679 struct efx_nic *efx = netdev_priv(net_dev);
680 enum efx_fc_type wanted_fc;
681 bool reset;
682
683 wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
684 (pause->tx_pause ? EFX_FC_TX : 0) |
685 (pause->autoneg ? EFX_FC_AUTO : 0));
686
687 if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
688 EFX_LOG(efx, "Flow control unsupported: tx ON rx OFF\n");
689 return -EINVAL;
690 }
691
692 if (!(efx->phy_op->mmds & DEV_PRESENT_BIT(MDIO_MMD_AN)) &&
693 (wanted_fc & EFX_FC_AUTO)) {
694 EFX_LOG(efx, "PHY does not support flow control "
695 "autonegotiation\n");
696 return -EINVAL;
697 }
698
699 /* TX flow control may automatically turn itself off if the
700 * link partner (intermittently) stops responding to pause
701 * frames. There isn't any indication that this has happened,
702 * so the best we do is leave it up to the user to spot this
703 * and fix it be cycling transmit flow control on this end. */
704 reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
705 if (EFX_WORKAROUND_11482(efx) && reset) {
706 if (falcon_rev(efx) >= FALCON_REV_B0) {
707 /* Recover by resetting the EM block */
708 if (efx->link_up)
709 falcon_drain_tx_fifo(efx);
710 } else {
711 /* Schedule a reset to recover */
712 efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
713 }
714 }
715
716 /* Try to push the pause parameters */
717 mutex_lock(&efx->mac_lock);
718
719 efx->wanted_fc = wanted_fc;
720 mdio_clause45_set_pause(efx);
721 __efx_reconfigure_port(efx);
722
723 mutex_unlock(&efx->mac_lock);
724
725 return 0;
726 }
727
efx_ethtool_get_pauseparam(struct net_device * net_dev,struct ethtool_pauseparam * pause)728 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
729 struct ethtool_pauseparam *pause)
730 {
731 struct efx_nic *efx = netdev_priv(net_dev);
732
733 pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
734 pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
735 pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
736 }
737
738
739 struct ethtool_ops efx_ethtool_ops = {
740 .get_settings = efx_ethtool_get_settings,
741 .set_settings = efx_ethtool_set_settings,
742 .get_drvinfo = efx_ethtool_get_drvinfo,
743 .nway_reset = efx_ethtool_nway_reset,
744 .get_link = efx_ethtool_get_link,
745 .get_eeprom_len = efx_ethtool_get_eeprom_len,
746 .get_eeprom = efx_ethtool_get_eeprom,
747 .set_eeprom = efx_ethtool_set_eeprom,
748 .get_coalesce = efx_ethtool_get_coalesce,
749 .set_coalesce = efx_ethtool_set_coalesce,
750 .get_pauseparam = efx_ethtool_get_pauseparam,
751 .set_pauseparam = efx_ethtool_set_pauseparam,
752 .get_rx_csum = efx_ethtool_get_rx_csum,
753 .set_rx_csum = efx_ethtool_set_rx_csum,
754 .get_tx_csum = ethtool_op_get_tx_csum,
755 .set_tx_csum = ethtool_op_set_tx_csum,
756 .get_sg = ethtool_op_get_sg,
757 .set_sg = ethtool_op_set_sg,
758 .get_tso = ethtool_op_get_tso,
759 .set_tso = ethtool_op_set_tso,
760 .get_flags = ethtool_op_get_flags,
761 .set_flags = ethtool_op_set_flags,
762 .get_sset_count = efx_ethtool_get_sset_count,
763 .self_test = efx_ethtool_self_test,
764 .get_strings = efx_ethtool_get_strings,
765 .phys_id = efx_ethtool_phys_id,
766 .get_ethtool_stats = efx_ethtool_get_stats,
767 };
768