Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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/mdio.h>
14#include <linux/rtnetlink.h>
15#include "net_driver.h"
16#include "workarounds.h"
17#include "selftest.h"
18#include "efx.h"
19#include "ethtool.h"
20#include "falcon.h"
21#include "spi.h"
22#include "mdio_10g.h"
23
24const char *efx_loopback_mode_names[] = {
25 [LOOPBACK_NONE] = "NONE",
26 [LOOPBACK_GMAC] = "GMAC",
27 [LOOPBACK_XGMII] = "XGMII",
28 [LOOPBACK_XGXS] = "XGXS",
29 [LOOPBACK_XAUI] = "XAUI",
30 [LOOPBACK_GPHY] = "GPHY",
31 [LOOPBACK_PHYXS] = "PHYXS",
32 [LOOPBACK_PCS] = "PCS",
33 [LOOPBACK_PMAPMD] = "PMA/PMD",
34 [LOOPBACK_NETWORK] = "NETWORK",
35};
36
37struct ethtool_string {
38 char name[ETH_GSTRING_LEN];
39};
40
41struct efx_ethtool_stat {
42 const char *name;
43 enum {
44 EFX_ETHTOOL_STAT_SOURCE_mac_stats,
45 EFX_ETHTOOL_STAT_SOURCE_nic,
46 EFX_ETHTOOL_STAT_SOURCE_channel
47 } source;
48 unsigned offset;
49 u64(*get_stat) (void *field); /* Reader function */
50};
51
52/* Initialiser for a struct #efx_ethtool_stat with type-checking */
53#define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
54 get_stat_function) { \
55 .name = #stat_name, \
56 .source = EFX_ETHTOOL_STAT_SOURCE_##source_name, \
57 .offset = ((((field_type *) 0) == \
58 &((struct efx_##source_name *)0)->field) ? \
59 offsetof(struct efx_##source_name, field) : \
60 offsetof(struct efx_##source_name, field)), \
61 .get_stat = get_stat_function, \
62}
63
64static u64 efx_get_uint_stat(void *field)
65{
66 return *(unsigned int *)field;
67}
68
69static u64 efx_get_ulong_stat(void *field)
70{
71 return *(unsigned long *)field;
72}
73
74static u64 efx_get_u64_stat(void *field)
75{
76 return *(u64 *) field;
77}
78
79static u64 efx_get_atomic_stat(void *field)
80{
81 return atomic_read((atomic_t *) field);
82}
83
84#define EFX_ETHTOOL_ULONG_MAC_STAT(field) \
85 EFX_ETHTOOL_STAT(field, mac_stats, field, \
86 unsigned long, efx_get_ulong_stat)
87
88#define EFX_ETHTOOL_U64_MAC_STAT(field) \
89 EFX_ETHTOOL_STAT(field, mac_stats, field, \
90 u64, efx_get_u64_stat)
91
92#define EFX_ETHTOOL_UINT_NIC_STAT(name) \
93 EFX_ETHTOOL_STAT(name, nic, n_##name, \
94 unsigned int, efx_get_uint_stat)
95
96#define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field) \
97 EFX_ETHTOOL_STAT(field, nic, field, \
98 atomic_t, efx_get_atomic_stat)
99
100#define EFX_ETHTOOL_UINT_CHANNEL_STAT(field) \
101 EFX_ETHTOOL_STAT(field, channel, n_##field, \
102 unsigned int, efx_get_uint_stat)
103
104static struct efx_ethtool_stat efx_ethtool_stats[] = {
105 EFX_ETHTOOL_U64_MAC_STAT(tx_bytes),
106 EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes),
107 EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes),
108 EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets),
109 EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad),
110 EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause),
111 EFX_ETHTOOL_ULONG_MAC_STAT(tx_control),
112 EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast),
113 EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast),
114 EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast),
115 EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64),
116 EFX_ETHTOOL_ULONG_MAC_STAT(tx_64),
117 EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127),
118 EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255),
119 EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511),
120 EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023),
121 EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx),
122 EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo),
123 EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo),
124 EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision),
125 EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision),
126 EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision),
127 EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision),
128 EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred),
129 EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision),
130 EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred),
131 EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp),
132 EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error),
133 EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error),
134 EFX_ETHTOOL_U64_MAC_STAT(rx_bytes),
135 EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes),
136 EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes),
137 EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets),
138 EFX_ETHTOOL_ULONG_MAC_STAT(rx_good),
139 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad),
140 EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause),
141 EFX_ETHTOOL_ULONG_MAC_STAT(rx_control),
142 EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast),
143 EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast),
144 EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast),
145 EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64),
146 EFX_ETHTOOL_ULONG_MAC_STAT(rx_64),
147 EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127),
148 EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255),
149 EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511),
150 EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023),
151 EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx),
152 EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo),
153 EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo),
154 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64),
155 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx),
156 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo),
157 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo),
158 EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow),
159 EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed),
160 EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier),
161 EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error),
162 EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error),
163 EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error),
164 EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error),
165 EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt),
166 EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
167 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
168 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
169 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
170 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
171};
172
173/* Number of ethtool statistics */
174#define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
175
176#define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
177
178/**************************************************************************
179 *
180 * Ethtool operations
181 *
182 **************************************************************************
183 */
184
185/* Identify device by flashing LEDs */
186static int efx_ethtool_phys_id(struct net_device *net_dev, u32 count)
187{
188 struct efx_nic *efx = netdev_priv(net_dev);
189
190 efx->board_info.blink(efx, 1);
191 set_current_state(TASK_INTERRUPTIBLE);
192 if (count)
193 schedule_timeout(count * HZ);
194 else
195 schedule();
196 efx->board_info.blink(efx, 0);
197 return 0;
198}
199
200/* This must be called with rtnl_lock held. */
201int efx_ethtool_get_settings(struct net_device *net_dev,
202 struct ethtool_cmd *ecmd)
203{
204 struct efx_nic *efx = netdev_priv(net_dev);
205
206 mutex_lock(&efx->mac_lock);
207 efx->phy_op->get_settings(efx, ecmd);
208 mutex_unlock(&efx->mac_lock);
209
210 /* Falcon GMAC does not support 1000Mbps HD */
211 ecmd->supported &= ~SUPPORTED_1000baseT_Half;
212
213 return 0;
214}
215
216/* This must be called with rtnl_lock held. */
217int efx_ethtool_set_settings(struct net_device *net_dev,
218 struct ethtool_cmd *ecmd)
219{
220 struct efx_nic *efx = netdev_priv(net_dev);
221 int rc;
222
223 /* Falcon GMAC does not support 1000Mbps HD */
224 if (ecmd->speed == SPEED_1000 && ecmd->duplex != DUPLEX_FULL) {
225 EFX_LOG(efx, "rejecting unsupported 1000Mbps HD"
226 " setting\n");
227 return -EINVAL;
228 }
229
230 mutex_lock(&efx->mac_lock);
231 rc = efx->phy_op->set_settings(efx, ecmd);
232 mutex_unlock(&efx->mac_lock);
233 if (!rc)
234 efx_reconfigure_port(efx);
235
236 return rc;
237}
238
239static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
240 struct ethtool_drvinfo *info)
241{
242 struct efx_nic *efx = netdev_priv(net_dev);
243
244 strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver));
245 strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
246 strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
247}
248
249/**
250 * efx_fill_test - fill in an individual self-test entry
251 * @test_index: Index of the test
252 * @strings: Ethtool strings, or %NULL
253 * @data: Ethtool test results, or %NULL
254 * @test: Pointer to test result (used only if data != %NULL)
255 * @unit_format: Unit name format (e.g. "chan\%d")
256 * @unit_id: Unit id (e.g. 0 for "chan0")
257 * @test_format: Test name format (e.g. "loopback.\%s.tx.sent")
258 * @test_id: Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
259 *
260 * Fill in an individual self-test entry.
261 */
262static void efx_fill_test(unsigned int test_index,
263 struct ethtool_string *strings, u64 *data,
264 int *test, const char *unit_format, int unit_id,
265 const char *test_format, const char *test_id)
266{
267 struct ethtool_string unit_str, test_str;
268
269 /* Fill data value, if applicable */
270 if (data)
271 data[test_index] = *test;
272
273 /* Fill string, if applicable */
274 if (strings) {
275 if (strchr(unit_format, '%'))
276 snprintf(unit_str.name, sizeof(unit_str.name),
277 unit_format, unit_id);
278 else
279 strcpy(unit_str.name, unit_format);
280 snprintf(test_str.name, sizeof(test_str.name),
281 test_format, test_id);
282 snprintf(strings[test_index].name,
283 sizeof(strings[test_index].name),
284 "%-6s %-24s", unit_str.name, test_str.name);
285 }
286}
287
288#define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
289#define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
290#define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
291#define EFX_LOOPBACK_NAME(_mode, _counter) \
292 "loopback.%s." _counter, LOOPBACK_MODE_NAME(mode)
293
294/**
295 * efx_fill_loopback_test - fill in a block of loopback self-test entries
296 * @efx: Efx NIC
297 * @lb_tests: Efx loopback self-test results structure
298 * @mode: Loopback test mode
299 * @test_index: Starting index of the test
300 * @strings: Ethtool strings, or %NULL
301 * @data: Ethtool test results, or %NULL
302 */
303static int efx_fill_loopback_test(struct efx_nic *efx,
304 struct efx_loopback_self_tests *lb_tests,
305 enum efx_loopback_mode mode,
306 unsigned int test_index,
307 struct ethtool_string *strings, u64 *data)
308{
309 struct efx_tx_queue *tx_queue;
310
311 efx_for_each_tx_queue(tx_queue, efx) {
312 efx_fill_test(test_index++, strings, data,
313 &lb_tests->tx_sent[tx_queue->queue],
314 EFX_TX_QUEUE_NAME(tx_queue),
315 EFX_LOOPBACK_NAME(mode, "tx_sent"));
316 efx_fill_test(test_index++, strings, data,
317 &lb_tests->tx_done[tx_queue->queue],
318 EFX_TX_QUEUE_NAME(tx_queue),
319 EFX_LOOPBACK_NAME(mode, "tx_done"));
320 }
321 efx_fill_test(test_index++, strings, data,
322 &lb_tests->rx_good,
323 "rx", 0,
324 EFX_LOOPBACK_NAME(mode, "rx_good"));
325 efx_fill_test(test_index++, strings, data,
326 &lb_tests->rx_bad,
327 "rx", 0,
328 EFX_LOOPBACK_NAME(mode, "rx_bad"));
329
330 return test_index;
331}
332
333/**
334 * efx_ethtool_fill_self_tests - get self-test details
335 * @efx: Efx NIC
336 * @tests: Efx self-test results structure, or %NULL
337 * @strings: Ethtool strings, or %NULL
338 * @data: Ethtool test results, or %NULL
339 */
340static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
341 struct efx_self_tests *tests,
342 struct ethtool_string *strings,
343 u64 *data)
344{
345 struct efx_channel *channel;
346 unsigned int n = 0, i;
347 enum efx_loopback_mode mode;
348
349 efx_fill_test(n++, strings, data, &tests->mdio,
350 "core", 0, "mdio", NULL);
351 efx_fill_test(n++, strings, data, &tests->nvram,
352 "core", 0, "nvram", NULL);
353 efx_fill_test(n++, strings, data, &tests->interrupt,
354 "core", 0, "interrupt", NULL);
355
356 /* Event queues */
357 efx_for_each_channel(channel, efx) {
358 efx_fill_test(n++, strings, data,
359 &tests->eventq_dma[channel->channel],
360 EFX_CHANNEL_NAME(channel),
361 "eventq.dma", NULL);
362 efx_fill_test(n++, strings, data,
363 &tests->eventq_int[channel->channel],
364 EFX_CHANNEL_NAME(channel),
365 "eventq.int", NULL);
366 efx_fill_test(n++, strings, data,
367 &tests->eventq_poll[channel->channel],
368 EFX_CHANNEL_NAME(channel),
369 "eventq.poll", NULL);
370 }
371
372 efx_fill_test(n++, strings, data, &tests->registers,
373 "core", 0, "registers", NULL);
374
375 for (i = 0; i < efx->phy_op->num_tests; i++)
376 efx_fill_test(n++, strings, data, &tests->phy[i],
377 "phy", 0, efx->phy_op->test_names[i], 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
391static 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
405static 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
430static 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
466static 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
478static 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
485static 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 */
529static int efx_ethtool_nway_reset(struct net_device *net_dev)
530{
531 struct efx_nic *efx = netdev_priv(net_dev);
532
533 return mdio45_nway_restart(&efx->mdio);
534}
535
536static 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
543static 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
554static 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
574static 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
596static 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_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 coalesce->use_adaptive_rx_coalesce = efx->irq_rx_adaptive;
619 coalesce->rx_coalesce_usecs_irq = efx->irq_rx_moderation;
620
621 return 0;
622}
623
624/* Set coalescing parameters
625 * The difficulties occur for shared channels
626 */
627static int efx_ethtool_set_coalesce(struct net_device *net_dev,
628 struct ethtool_coalesce *coalesce)
629{
630 struct efx_nic *efx = netdev_priv(net_dev);
631 struct efx_channel *channel;
632 struct efx_tx_queue *tx_queue;
633 unsigned tx_usecs, rx_usecs, adaptive;
634
635 if (coalesce->use_adaptive_tx_coalesce)
636 return -EOPNOTSUPP;
637
638 if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
639 EFX_ERR(efx, "invalid coalescing setting. "
640 "Only rx/tx_coalesce_usecs_irq are supported\n");
641 return -EOPNOTSUPP;
642 }
643
644 rx_usecs = coalesce->rx_coalesce_usecs_irq;
645 tx_usecs = coalesce->tx_coalesce_usecs_irq;
646 adaptive = coalesce->use_adaptive_rx_coalesce;
647
648 /* If the channel is shared only allow RX parameters to be set */
649 efx_for_each_tx_queue(tx_queue, efx) {
650 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
651 tx_usecs) {
652 EFX_ERR(efx, "Channel is shared. "
653 "Only RX coalescing may be set\n");
654 return -EOPNOTSUPP;
655 }
656 }
657
658 efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive);
659
660 /* Reset channel to pick up new moderation value. Note that
661 * this may change the value of the irq_moderation field
662 * (e.g. to allow for hardware timer granularity).
663 */
664 efx_for_each_channel(channel, efx)
665 falcon_set_int_moderation(channel);
666
667 return 0;
668}
669
670static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
671 struct ethtool_pauseparam *pause)
672{
673 struct efx_nic *efx = netdev_priv(net_dev);
674 enum efx_fc_type wanted_fc;
675 bool reset;
676
677 wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
678 (pause->tx_pause ? EFX_FC_TX : 0) |
679 (pause->autoneg ? EFX_FC_AUTO : 0));
680
681 if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
682 EFX_LOG(efx, "Flow control unsupported: tx ON rx OFF\n");
683 return -EINVAL;
684 }
685
686 if (!(efx->phy_op->mmds & MDIO_DEVS_AN) &&
687 (wanted_fc & EFX_FC_AUTO)) {
688 EFX_LOG(efx, "PHY does not support flow control "
689 "autonegotiation\n");
690 return -EINVAL;
691 }
692
693 /* TX flow control may automatically turn itself off if the
694 * link partner (intermittently) stops responding to pause
695 * frames. There isn't any indication that this has happened,
696 * so the best we do is leave it up to the user to spot this
697 * and fix it be cycling transmit flow control on this end. */
698 reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
699 if (EFX_WORKAROUND_11482(efx) && reset) {
700 if (falcon_rev(efx) >= FALCON_REV_B0) {
701 /* Recover by resetting the EM block */
702 if (efx->link_up)
703 falcon_drain_tx_fifo(efx);
704 } else {
705 /* Schedule a reset to recover */
706 efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
707 }
708 }
709
710 /* Try to push the pause parameters */
711 mutex_lock(&efx->mac_lock);
712
713 efx->wanted_fc = wanted_fc;
714 if (efx->phy_op->mmds & MDIO_DEVS_AN)
715 mdio45_ethtool_spauseparam_an(&efx->mdio, pause);
716 __efx_reconfigure_port(efx);
717
718 mutex_unlock(&efx->mac_lock);
719
720 return 0;
721}
722
723static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
724 struct ethtool_pauseparam *pause)
725{
726 struct efx_nic *efx = netdev_priv(net_dev);
727
728 pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
729 pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
730 pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
731}
732
733
734const struct ethtool_ops efx_ethtool_ops = {
735 .get_settings = efx_ethtool_get_settings,
736 .set_settings = efx_ethtool_set_settings,
737 .get_drvinfo = efx_ethtool_get_drvinfo,
738 .nway_reset = efx_ethtool_nway_reset,
739 .get_link = efx_ethtool_get_link,
740 .get_eeprom_len = efx_ethtool_get_eeprom_len,
741 .get_eeprom = efx_ethtool_get_eeprom,
742 .set_eeprom = efx_ethtool_set_eeprom,
743 .get_coalesce = efx_ethtool_get_coalesce,
744 .set_coalesce = efx_ethtool_set_coalesce,
745 .get_pauseparam = efx_ethtool_get_pauseparam,
746 .set_pauseparam = efx_ethtool_set_pauseparam,
747 .get_rx_csum = efx_ethtool_get_rx_csum,
748 .set_rx_csum = efx_ethtool_set_rx_csum,
749 .get_tx_csum = ethtool_op_get_tx_csum,
750 .set_tx_csum = ethtool_op_set_tx_csum,
751 .get_sg = ethtool_op_get_sg,
752 .set_sg = ethtool_op_set_sg,
753 .get_tso = ethtool_op_get_tso,
754 .set_tso = ethtool_op_set_tso,
755 .get_flags = ethtool_op_get_flags,
756 .set_flags = ethtool_op_set_flags,
757 .get_sset_count = efx_ethtool_get_sset_count,
758 .self_test = efx_ethtool_self_test,
759 .get_strings = efx_ethtool_get_strings,
760 .phys_id = efx_ethtool_phys_id,
761 .get_ethtool_stats = efx_ethtool_get_stats,
762};