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sfc: Cleanup RX event processing
[linux-block.git] / drivers / net / sfc / ethtool.c
CommitLineData
8ceee660
BH		 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"
3273c2e8 15#include "selftest.h"
8ceee660
BH		 16#include "efx.h"
17#include "ethtool.h"
18#include "falcon.h"
19#include "gmii.h"
4a5b504d 20#include "spi.h"
8ceee660
BH		 21#include "mac.h"
22
3273c2e8
BH		 23const char *efx_loopback_mode_names[] = {
24 [LOOPBACK_NONE] = "NONE",
25 [LOOPBACK_MAC] = "MAC",
26 [LOOPBACK_XGMII] = "XGMII",
27 [LOOPBACK_XGXS] = "XGXS",
28 [LOOPBACK_XAUI] = "XAUI",
29 [LOOPBACK_PHY] = "PHY",
30 [LOOPBACK_PHYXS] = "PHY(XS)",
31 [LOOPBACK_PCS] = "PHY(PCS)",
32 [LOOPBACK_PMAPMD] = "PHY(PMAPMD)",
33 [LOOPBACK_NETWORK] = "NETWORK",
34};
35
8ceee660
BH		 36struct ethtool_string {
37 char name[ETH_GSTRING_LEN];
38};
39
40struct 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
63static u64 efx_get_uint_stat(void *field)
64{
65 return *(unsigned int *)field;
66}
67
68static u64 efx_get_ulong_stat(void *field)
69{
70 return *(unsigned long *)field;
71}
72
73static u64 efx_get_u64_stat(void *field)
74{
75 return *(u64 *) field;
76}
77
78static 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
103static 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
4a5b504d
BH		 175/* EEPROM range with gPXE configuration */
176#define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
177#define EFX_ETHTOOL_EEPROM_MIN 0x100U
178#define EFX_ETHTOOL_EEPROM_MAX 0x400U
179
8ceee660
BH		 180/**************************************************************************
181 *
182 * Ethtool operations
183 *
184 **************************************************************************
185 */
186
187/* Identify device by flashing LEDs */
188static int efx_ethtool_phys_id(struct net_device *net_dev, u32 seconds)
189{
767e468c 190 struct efx_nic *efx = netdev_priv(net_dev);
8ceee660
BH		 191
192 efx->board_info.blink(efx, 1);
193 schedule_timeout_interruptible(seconds * HZ);
194 efx->board_info.blink(efx, 0);
195 return 0;
196}
197
198/* This must be called with rtnl_lock held. */
199int efx_ethtool_get_settings(struct net_device *net_dev,
200 struct ethtool_cmd *ecmd)
201{
767e468c 202 struct efx_nic *efx = netdev_priv(net_dev);
8ceee660
BH		 203 int rc;
204
205 mutex_lock(&efx->mac_lock);
206 rc = falcon_xmac_get_settings(efx, ecmd);
207 mutex_unlock(&efx->mac_lock);
208
209 return rc;
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{
767e468c 216 struct efx_nic *efx = netdev_priv(net_dev);
8ceee660
BH		 217 int rc;
218
219 mutex_lock(&efx->mac_lock);
220 rc = falcon_xmac_set_settings(efx, ecmd);
221 mutex_unlock(&efx->mac_lock);
222 if (!rc)
223 efx_reconfigure_port(efx);
224
225 return rc;
226}
227
228static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
229 struct ethtool_drvinfo *info)
230{
767e468c 231 struct efx_nic *efx = netdev_priv(net_dev);
8ceee660
BH		 232
233 strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver));
234 strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
235 strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
236}
237
3273c2e8
BH		 238/**
239 * efx_fill_test - fill in an individual self-test entry
240 * @test_index: Index of the test
241 * @strings: Ethtool strings, or %NULL
242 * @data: Ethtool test results, or %NULL
243 * @test: Pointer to test result (used only if data != %NULL)
244 * @unit_format: Unit name format (e.g. "channel\%d")
245 * @unit_id: Unit id (e.g. 0 for "channel0")
246 * @test_format: Test name format (e.g. "loopback.\%s.tx.sent")
247 * @test_id: Test id (e.g. "PHY" for "loopback.PHY.tx_sent")
248 *
249 * Fill in an individual self-test entry.
250 */
251static void efx_fill_test(unsigned int test_index,
252 struct ethtool_string *strings, u64 *data,
253 int *test, const char *unit_format, int unit_id,
254 const char *test_format, const char *test_id)
255{
256 struct ethtool_string unit_str, test_str;
257
258 /* Fill data value, if applicable */
259 if (data)
260 data[test_index] = *test;
261
262 /* Fill string, if applicable */
263 if (strings) {
264 snprintf(unit_str.name, sizeof(unit_str.name),
265 unit_format, unit_id);
266 snprintf(test_str.name, sizeof(test_str.name),
267 test_format, test_id);
268 snprintf(strings[test_index].name,
269 sizeof(strings[test_index].name),
270 "%-9s%-17s", unit_str.name, test_str.name);
271 }
272}
273
274#define EFX_PORT_NAME "port%d", 0
275#define EFX_CHANNEL_NAME(_channel) "channel%d", _channel->channel
276#define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
277#define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
278#define EFX_LOOPBACK_NAME(_mode, _counter) \
279 "loopback.%s." _counter, LOOPBACK_MODE_NAME(mode)
280
281/**
282 * efx_fill_loopback_test - fill in a block of loopback self-test entries
283 * @efx: Efx NIC
284 * @lb_tests: Efx loopback self-test results structure
285 * @mode: Loopback test mode
286 * @test_index: Starting index of the test
287 * @strings: Ethtool strings, or %NULL
288 * @data: Ethtool test results, or %NULL
289 */
290static int efx_fill_loopback_test(struct efx_nic *efx,
291 struct efx_loopback_self_tests *lb_tests,
292 enum efx_loopback_mode mode,
293 unsigned int test_index,
294 struct ethtool_string *strings, u64 *data)
295{
296 struct efx_tx_queue *tx_queue;
297
298 efx_for_each_tx_queue(tx_queue, efx) {
299 efx_fill_test(test_index++, strings, data,
300 &lb_tests->tx_sent[tx_queue->queue],
301 EFX_TX_QUEUE_NAME(tx_queue),
302 EFX_LOOPBACK_NAME(mode, "tx_sent"));
303 efx_fill_test(test_index++, strings, data,
304 &lb_tests->tx_done[tx_queue->queue],
305 EFX_TX_QUEUE_NAME(tx_queue),
306 EFX_LOOPBACK_NAME(mode, "tx_done"));
307 }
308 efx_fill_test(test_index++, strings, data,
309 &lb_tests->rx_good,
310 EFX_PORT_NAME,
311 EFX_LOOPBACK_NAME(mode, "rx_good"));
312 efx_fill_test(test_index++, strings, data,
313 &lb_tests->rx_bad,
314 EFX_PORT_NAME,
315 EFX_LOOPBACK_NAME(mode, "rx_bad"));
316
317 return test_index;
318}
319
320/**
321 * efx_ethtool_fill_self_tests - get self-test details
322 * @efx: Efx NIC
323 * @tests: Efx self-test results structure, or %NULL
324 * @strings: Ethtool strings, or %NULL
325 * @data: Ethtool test results, or %NULL
326 */
327static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
328 struct efx_self_tests *tests,
329 struct ethtool_string *strings,
330 u64 *data)
331{
332 struct efx_channel *channel;
333 unsigned int n = 0;
334 enum efx_loopback_mode mode;
335
336 /* Interrupt */
337 efx_fill_test(n++, strings, data, &tests->interrupt,
338 "core", 0, "interrupt", NULL);
339
340 /* Event queues */
341 efx_for_each_channel(channel, efx) {
342 efx_fill_test(n++, strings, data,
343 &tests->eventq_dma[channel->channel],
344 EFX_CHANNEL_NAME(channel),
345 "eventq.dma", NULL);
346 efx_fill_test(n++, strings, data,
347 &tests->eventq_int[channel->channel],
348 EFX_CHANNEL_NAME(channel),
349 "eventq.int", NULL);
350 efx_fill_test(n++, strings, data,
351 &tests->eventq_poll[channel->channel],
352 EFX_CHANNEL_NAME(channel),
353 "eventq.poll", NULL);
354 }
355
356 /* PHY presence */
357 efx_fill_test(n++, strings, data, &tests->phy_ok,
358 EFX_PORT_NAME, "phy_ok", NULL);
359
360 /* Loopback tests */
361 efx_fill_test(n++, strings, data, &tests->loopback_speed,
362 EFX_PORT_NAME, "loopback.speed", NULL);
363 efx_fill_test(n++, strings, data, &tests->loopback_full_duplex,
364 EFX_PORT_NAME, "loopback.full_duplex", NULL);
365 for (mode = LOOPBACK_NONE; mode < LOOPBACK_TEST_MAX; mode++) {
366 if (!(efx->loopback_modes & (1 << mode)))
367 continue;
368 n = efx_fill_loopback_test(efx,
369 &tests->loopback[mode], mode, n,
370 strings, data);
371 }
372
373 return n;
374}
375
8ceee660
BH		 376static int efx_ethtool_get_stats_count(struct net_device *net_dev)
377{
378 return EFX_ETHTOOL_NUM_STATS;
379}
380
3273c2e8
BH		 381static int efx_ethtool_self_test_count(struct net_device *net_dev)
382{
767e468c 383 struct efx_nic *efx = netdev_priv(net_dev);
3273c2e8
BH		 384
385 return efx_ethtool_fill_self_tests(efx, NULL, NULL, NULL);
386}
387
8ceee660
BH		 388static void efx_ethtool_get_strings(struct net_device *net_dev,
389 u32 string_set, u8 *strings)
390{
767e468c 391 struct efx_nic *efx = netdev_priv(net_dev);
8ceee660
BH		 392 struct ethtool_string *ethtool_strings =
393 (struct ethtool_string *)strings;
394 int i;
395
3273c2e8
BH		 396 switch (string_set) {
397 case ETH_SS_STATS:
8ceee660
BH		 398 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
399 strncpy(ethtool_strings[i].name,
400 efx_ethtool_stats[i].name,
401 sizeof(ethtool_strings[i].name));
3273c2e8
BH		 402 break;
403 case ETH_SS_TEST:
404 efx_ethtool_fill_self_tests(efx, NULL,
405 ethtool_strings, NULL);
406 break;
407 default:
408 /* No other string sets */
409 break;
410 }
8ceee660
BH		 411}
412
413static void efx_ethtool_get_stats(struct net_device *net_dev,
414 struct ethtool_stats *stats,
415 u64 *data)
416{
767e468c 417 struct efx_nic *efx = netdev_priv(net_dev);
8ceee660
BH		 418 struct efx_mac_stats *mac_stats = &efx->mac_stats;
419 struct efx_ethtool_stat *stat;
420 struct efx_channel *channel;
421 int i;
422
423 EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
424
425 /* Update MAC and NIC statistics */
426 net_dev->get_stats(net_dev);
427
428 /* Fill detailed statistics buffer */
429 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
430 stat = &efx_ethtool_stats[i];
431 switch (stat->source) {
432 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
433 data[i] = stat->get_stat((void *)mac_stats +
434 stat->offset);
435 break;
436 case EFX_ETHTOOL_STAT_SOURCE_nic:
437 data[i] = stat->get_stat((void *)efx + stat->offset);
438 break;
439 case EFX_ETHTOOL_STAT_SOURCE_channel:
440 data[i] = 0;
441 efx_for_each_channel(channel, efx)
442 data[i] += stat->get_stat((void *)channel +
443 stat->offset);
444 break;
445 }
446 }
447}
448
8ceee660
BH		 449static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
450{
767e468c 451 struct efx_nic *efx = netdev_priv(net_dev);
8ceee660
BH		 452
453 /* No way to stop the hardware doing the checks; we just
454 * ignore the result.
455 */
dc8cfa55 456 efx->rx_checksum_enabled = !!enable;
8ceee660
BH		 457
458 return 0;
459}
460
461static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
462{
767e468c 463 struct efx_nic *efx = netdev_priv(net_dev);
8ceee660
BH		 464
465 return efx->rx_checksum_enabled;
466}
467
3273c2e8
BH		 468static void efx_ethtool_self_test(struct net_device *net_dev,
469 struct ethtool_test *test, u64 *data)
470{
767e468c 471 struct efx_nic *efx = netdev_priv(net_dev);
3273c2e8
BH		 472 struct efx_self_tests efx_tests;
473 int offline, already_up;
474 int rc;
475
476 ASSERT_RTNL();
477 if (efx->state != STATE_RUNNING) {
478 rc = -EIO;
479 goto fail1;
480 }
481
482 /* We need rx buffers and interrupts. */
483 already_up = (efx->net_dev->flags & IFF_UP);
484 if (!already_up) {
485 rc = dev_open(efx->net_dev);
486 if (rc) {
487 EFX_ERR(efx, "failed opening device.\n");
488 goto fail2;
489 }
490 }
491
492 memset(&efx_tests, 0, sizeof(efx_tests));
493 offline = (test->flags & ETH_TEST_FL_OFFLINE);
494
495 /* Perform online self tests first */
496 rc = efx_online_test(efx, &efx_tests);
497 if (rc)
498 goto out;
499
500 /* Perform offline tests only if online tests passed */
501 if (offline) {
502 /* Stop the kernel from sending packets during the test. */
503 efx_stop_queue(efx);
504 rc = efx_flush_queues(efx);
505 if (!rc)
506 rc = efx_offline_test(efx, &efx_tests,
507 efx->loopback_modes);
508 efx_wake_queue(efx);
509 }
510
511 out:
512 if (!already_up)
513 dev_close(efx->net_dev);
514
515 EFX_LOG(efx, "%s all %sline self-tests\n",
516 rc == 0 ? "passed" : "failed", offline ? "off" : "on");
517
518 fail2:
519 fail1:
520 /* Fill ethtool results structures */
521 efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
522 if (rc)
523 test->flags |= ETH_TEST_FL_FAILED;
524}
525
8ceee660
BH		 526/* Restart autonegotiation */
527static int efx_ethtool_nway_reset(struct net_device *net_dev)
528{
767e468c 529 struct efx_nic *efx = netdev_priv(net_dev);
8ceee660
BH		 530
531 return mii_nway_restart(&efx->mii);
532}
533
534static u32 efx_ethtool_get_link(struct net_device *net_dev)
535{
767e468c 536 struct efx_nic *efx = netdev_priv(net_dev);
8ceee660
BH		 537
538 return efx->link_up;
539}
540
4a5b504d
BH		 541static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
542{
543 struct efx_nic *efx = netdev_priv(net_dev);
544 struct efx_spi_device *spi = efx->spi_eeprom;
545
546 if (!spi)
547 return 0;
548 return min(spi->size, EFX_ETHTOOL_EEPROM_MAX) -
549 min(spi->size, EFX_ETHTOOL_EEPROM_MIN);
550}
551
552static int efx_ethtool_get_eeprom(struct net_device *net_dev,
553 struct ethtool_eeprom *eeprom, u8 *buf)
554{
555 struct efx_nic *efx = netdev_priv(net_dev);
556 struct efx_spi_device *spi = efx->spi_eeprom;
557 size_t len;
558 int rc;
559
560 rc = falcon_spi_read(spi, eeprom->offset + EFX_ETHTOOL_EEPROM_MIN,
561 eeprom->len, &len, buf);
562 eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC;
563 eeprom->len = len;
564 return rc;
565}
566
567static int efx_ethtool_set_eeprom(struct net_device *net_dev,
568 struct ethtool_eeprom *eeprom, u8 *buf)
569{
570 struct efx_nic *efx = netdev_priv(net_dev);
571 struct efx_spi_device *spi = efx->spi_eeprom;
572 size_t len;
573 int rc;
574
575 if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC)
576 return -EINVAL;
577
578 rc = falcon_spi_write(spi, eeprom->offset + EFX_ETHTOOL_EEPROM_MIN,
579 eeprom->len, &len, buf);
580 eeprom->len = len;
581 return rc;
582}
583
8ceee660
BH		 584static int efx_ethtool_get_coalesce(struct net_device *net_dev,
585 struct ethtool_coalesce *coalesce)
586{
767e468c 587 struct efx_nic *efx = netdev_priv(net_dev);
8ceee660
BH		 588 struct efx_tx_queue *tx_queue;
589 struct efx_rx_queue *rx_queue;
590 struct efx_channel *channel;
591
592 memset(coalesce, 0, sizeof(*coalesce));
593
594 /* Find lowest IRQ moderation across all used TX queues */
595 coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
596 efx_for_each_tx_queue(tx_queue, efx) {
597 channel = tx_queue->channel;
598 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
599 if (channel->used_flags != EFX_USED_BY_RX_TX)
600 coalesce->tx_coalesce_usecs_irq =
601 channel->irq_moderation;
602 else
603 coalesce->tx_coalesce_usecs_irq = 0;
604 }
605 }
606
607 /* Find lowest IRQ moderation across all used RX queues */
608 coalesce->rx_coalesce_usecs_irq = ~((u32) 0);
609 efx_for_each_rx_queue(rx_queue, efx) {
610 channel = rx_queue->channel;
611 if (channel->irq_moderation < coalesce->rx_coalesce_usecs_irq)
612 coalesce->rx_coalesce_usecs_irq =
613 channel->irq_moderation;
614 }
615
616 return 0;
617}
618
619/* Set coalescing parameters
620 * The difficulties occur for shared channels
621 */
622static int efx_ethtool_set_coalesce(struct net_device *net_dev,
623 struct ethtool_coalesce *coalesce)
624{
767e468c 625 struct efx_nic *efx = netdev_priv(net_dev);
8ceee660
BH		 626 struct efx_channel *channel;
627 struct efx_tx_queue *tx_queue;
628 unsigned tx_usecs, rx_usecs;
629
630 if (coalesce->use_adaptive_rx_coalesce ||
631 coalesce->use_adaptive_tx_coalesce)
632 return -EOPNOTSUPP;
633
634 if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
635 EFX_ERR(efx, "invalid coalescing setting. "
636 "Only rx/tx_coalesce_usecs_irq are supported\n");
637 return -EOPNOTSUPP;
638 }
639
640 rx_usecs = coalesce->rx_coalesce_usecs_irq;
641 tx_usecs = coalesce->tx_coalesce_usecs_irq;
642
643 /* If the channel is shared only allow RX parameters to be set */
644 efx_for_each_tx_queue(tx_queue, efx) {
645 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
646 tx_usecs) {
647 EFX_ERR(efx, "Channel is shared. "
648 "Only RX coalescing may be set\n");
649 return -EOPNOTSUPP;
650 }
651 }
652
653 efx_init_irq_moderation(efx, tx_usecs, rx_usecs);
654
655 /* Reset channel to pick up new moderation value. Note that
656 * this may change the value of the irq_moderation field
657 * (e.g. to allow for hardware timer granularity).
658 */
659 efx_for_each_channel(channel, efx)
660 falcon_set_int_moderation(channel);
661
662 return 0;
663}
664
665static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
666 struct ethtool_pauseparam *pause)
667{
767e468c 668 struct efx_nic *efx = netdev_priv(net_dev);
8ceee660
BH		 669 enum efx_fc_type flow_control = efx->flow_control;
670 int rc;
671
672 flow_control &= ~(EFX_FC_RX | EFX_FC_TX | EFX_FC_AUTO);
673 flow_control |= pause->rx_pause ? EFX_FC_RX : 0;
674 flow_control |= pause->tx_pause ? EFX_FC_TX : 0;
675 flow_control |= pause->autoneg ? EFX_FC_AUTO : 0;
676
677 /* Try to push the pause parameters */
678 mutex_lock(&efx->mac_lock);
679 rc = falcon_xmac_set_pause(efx, flow_control);
680 mutex_unlock(&efx->mac_lock);
681
682 if (!rc)
683 efx_reconfigure_port(efx);
684
685 return rc;
686}
687
688static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
689 struct ethtool_pauseparam *pause)
690{
767e468c 691 struct efx_nic *efx = netdev_priv(net_dev);
8ceee660 692
dc8cfa55
BH		 693 pause->rx_pause = !!(efx->flow_control & EFX_FC_RX);
694 pause->tx_pause = !!(efx->flow_control & EFX_FC_TX);
695 pause->autoneg = !!(efx->flow_control & EFX_FC_AUTO);
8ceee660
BH		 696}
697
698
699struct ethtool_ops efx_ethtool_ops = {
700 .get_settings = efx_ethtool_get_settings,
701 .set_settings = efx_ethtool_set_settings,
702 .get_drvinfo = efx_ethtool_get_drvinfo,
703 .nway_reset = efx_ethtool_nway_reset,
704 .get_link = efx_ethtool_get_link,
4a5b504d
BH		 705 .get_eeprom_len = efx_ethtool_get_eeprom_len,
706 .get_eeprom = efx_ethtool_get_eeprom,
707 .set_eeprom = efx_ethtool_set_eeprom,
8ceee660
BH		 708 .get_coalesce = efx_ethtool_get_coalesce,
709 .set_coalesce = efx_ethtool_set_coalesce,
710 .get_pauseparam = efx_ethtool_get_pauseparam,
711 .set_pauseparam = efx_ethtool_set_pauseparam,
712 .get_rx_csum = efx_ethtool_get_rx_csum,
713 .set_rx_csum = efx_ethtool_set_rx_csum,
714 .get_tx_csum = ethtool_op_get_tx_csum,
60ac1065 715 .set_tx_csum = ethtool_op_set_tx_csum,
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BH		 716 .get_sg = ethtool_op_get_sg,
717 .set_sg = ethtool_op_set_sg,
b9b39b62 718 .get_tso = ethtool_op_get_tso,
60ac1065 719 .set_tso = ethtool_op_set_tso,
8ceee660
BH		 720 .get_flags = ethtool_op_get_flags,
721 .set_flags = ethtool_op_set_flags,
3273c2e8
BH		 722 .self_test_count = efx_ethtool_self_test_count,
723 .self_test = efx_ethtool_self_test,
8ceee660
BH		 724 .get_strings = efx_ethtool_get_strings,
725 .phys_id = efx_ethtool_phys_id,
726 .get_stats_count = efx_ethtool_get_stats_count,
727 .get_ethtool_stats = efx_ethtool_get_stats,
728};
Linux 6.x block layer and io_uring tree(s)