e1000e: remove inapplicable test for ioport
[linux-2.6] / 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 "selftest.h"
16 #include "efx.h"
17 #include "ethtool.h"
18 #include "falcon.h"
19 #include "gmii.h"
20 #include "mac.h"
21
22 const char *efx_loopback_mode_names[] = {
23         [LOOPBACK_NONE]         = "NONE",
24         [LOOPBACK_MAC]          = "MAC",
25         [LOOPBACK_XGMII]        = "XGMII",
26         [LOOPBACK_XGXS]         = "XGXS",
27         [LOOPBACK_XAUI]         = "XAUI",
28         [LOOPBACK_PHY]          = "PHY",
29         [LOOPBACK_PHYXS]        = "PHY(XS)",
30         [LOOPBACK_PCS]          = "PHY(PCS)",
31         [LOOPBACK_PMAPMD]       = "PHY(PMAPMD)",
32         [LOOPBACK_NETWORK]      = "NETWORK",
33 };
34
35 static int efx_ethtool_set_tx_csum(struct net_device *net_dev, u32 enable);
36
37 struct ethtool_string {
38         char name[ETH_GSTRING_LEN];
39 };
40
41 struct 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
64 static u64 efx_get_uint_stat(void *field)
65 {
66         return *(unsigned int *)field;
67 }
68
69 static u64 efx_get_ulong_stat(void *field)
70 {
71         return *(unsigned long *)field;
72 }
73
74 static u64 efx_get_u64_stat(void *field)
75 {
76         return *(u64 *) field;
77 }
78
79 static 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
104 static 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 /**************************************************************************
177  *
178  * Ethtool operations
179  *
180  **************************************************************************
181  */
182
183 /* Identify device by flashing LEDs */
184 static int efx_ethtool_phys_id(struct net_device *net_dev, u32 seconds)
185 {
186         struct efx_nic *efx = net_dev->priv;
187
188         efx->board_info.blink(efx, 1);
189         schedule_timeout_interruptible(seconds * HZ);
190         efx->board_info.blink(efx, 0);
191         return 0;
192 }
193
194 /* This must be called with rtnl_lock held. */
195 int efx_ethtool_get_settings(struct net_device *net_dev,
196                              struct ethtool_cmd *ecmd)
197 {
198         struct efx_nic *efx = net_dev->priv;
199         int rc;
200
201         mutex_lock(&efx->mac_lock);
202         rc = falcon_xmac_get_settings(efx, ecmd);
203         mutex_unlock(&efx->mac_lock);
204
205         return rc;
206 }
207
208 /* This must be called with rtnl_lock held. */
209 int efx_ethtool_set_settings(struct net_device *net_dev,
210                              struct ethtool_cmd *ecmd)
211 {
212         struct efx_nic *efx = net_dev->priv;
213         int rc;
214
215         mutex_lock(&efx->mac_lock);
216         rc = falcon_xmac_set_settings(efx, ecmd);
217         mutex_unlock(&efx->mac_lock);
218         if (!rc)
219                 efx_reconfigure_port(efx);
220
221         return rc;
222 }
223
224 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
225                                     struct ethtool_drvinfo *info)
226 {
227         struct efx_nic *efx = net_dev->priv;
228
229         strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver));
230         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
231         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
232 }
233
234 /**
235  * efx_fill_test - fill in an individual self-test entry
236  * @test_index:         Index of the test
237  * @strings:            Ethtool strings, or %NULL
238  * @data:               Ethtool test results, or %NULL
239  * @test:               Pointer to test result (used only if data != %NULL)
240  * @unit_format:        Unit name format (e.g. "channel\%d")
241  * @unit_id:            Unit id (e.g. 0 for "channel0")
242  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
243  * @test_id:            Test id (e.g. "PHY" for "loopback.PHY.tx_sent")
244  *
245  * Fill in an individual self-test entry.
246  */
247 static void efx_fill_test(unsigned int test_index,
248                           struct ethtool_string *strings, u64 *data,
249                           int *test, const char *unit_format, int unit_id,
250                           const char *test_format, const char *test_id)
251 {
252         struct ethtool_string unit_str, test_str;
253
254         /* Fill data value, if applicable */
255         if (data)
256                 data[test_index] = *test;
257
258         /* Fill string, if applicable */
259         if (strings) {
260                 snprintf(unit_str.name, sizeof(unit_str.name),
261                          unit_format, unit_id);
262                 snprintf(test_str.name, sizeof(test_str.name),
263                          test_format, test_id);
264                 snprintf(strings[test_index].name,
265                          sizeof(strings[test_index].name),
266                          "%-9s%-17s", unit_str.name, test_str.name);
267         }
268 }
269
270 #define EFX_PORT_NAME "port%d", 0
271 #define EFX_CHANNEL_NAME(_channel) "channel%d", _channel->channel
272 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
273 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
274 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
275         "loopback.%s." _counter, LOOPBACK_MODE_NAME(mode)
276
277 /**
278  * efx_fill_loopback_test - fill in a block of loopback self-test entries
279  * @efx:                Efx NIC
280  * @lb_tests:           Efx loopback self-test results structure
281  * @mode:               Loopback test mode
282  * @test_index:         Starting index of the test
283  * @strings:            Ethtool strings, or %NULL
284  * @data:               Ethtool test results, or %NULL
285  */
286 static int efx_fill_loopback_test(struct efx_nic *efx,
287                                   struct efx_loopback_self_tests *lb_tests,
288                                   enum efx_loopback_mode mode,
289                                   unsigned int test_index,
290                                   struct ethtool_string *strings, u64 *data)
291 {
292         struct efx_tx_queue *tx_queue;
293
294         efx_for_each_tx_queue(tx_queue, efx) {
295                 efx_fill_test(test_index++, strings, data,
296                               &lb_tests->tx_sent[tx_queue->queue],
297                               EFX_TX_QUEUE_NAME(tx_queue),
298                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
299                 efx_fill_test(test_index++, strings, data,
300                               &lb_tests->tx_done[tx_queue->queue],
301                               EFX_TX_QUEUE_NAME(tx_queue),
302                               EFX_LOOPBACK_NAME(mode, "tx_done"));
303         }
304         efx_fill_test(test_index++, strings, data,
305                       &lb_tests->rx_good,
306                       EFX_PORT_NAME,
307                       EFX_LOOPBACK_NAME(mode, "rx_good"));
308         efx_fill_test(test_index++, strings, data,
309                       &lb_tests->rx_bad,
310                       EFX_PORT_NAME,
311                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
312
313         return test_index;
314 }
315
316 /**
317  * efx_ethtool_fill_self_tests - get self-test details
318  * @efx:                Efx NIC
319  * @tests:              Efx self-test results structure, or %NULL
320  * @strings:            Ethtool strings, or %NULL
321  * @data:               Ethtool test results, or %NULL
322  */
323 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
324                                        struct efx_self_tests *tests,
325                                        struct ethtool_string *strings,
326                                        u64 *data)
327 {
328         struct efx_channel *channel;
329         unsigned int n = 0;
330         enum efx_loopback_mode mode;
331
332         /* Interrupt */
333         efx_fill_test(n++, strings, data, &tests->interrupt,
334                       "core", 0, "interrupt", NULL);
335
336         /* Event queues */
337         efx_for_each_channel(channel, efx) {
338                 efx_fill_test(n++, strings, data,
339                               &tests->eventq_dma[channel->channel],
340                               EFX_CHANNEL_NAME(channel),
341                               "eventq.dma", NULL);
342                 efx_fill_test(n++, strings, data,
343                               &tests->eventq_int[channel->channel],
344                               EFX_CHANNEL_NAME(channel),
345                               "eventq.int", NULL);
346                 efx_fill_test(n++, strings, data,
347                               &tests->eventq_poll[channel->channel],
348                               EFX_CHANNEL_NAME(channel),
349                               "eventq.poll", NULL);
350         }
351
352         /* PHY presence */
353         efx_fill_test(n++, strings, data, &tests->phy_ok,
354                       EFX_PORT_NAME, "phy_ok", NULL);
355
356         /* Loopback tests */
357         efx_fill_test(n++, strings, data, &tests->loopback_speed,
358                       EFX_PORT_NAME, "loopback.speed", NULL);
359         efx_fill_test(n++, strings, data, &tests->loopback_full_duplex,
360                       EFX_PORT_NAME, "loopback.full_duplex", NULL);
361         for (mode = LOOPBACK_NONE; mode < LOOPBACK_TEST_MAX; mode++) {
362                 if (!(efx->loopback_modes & (1 << mode)))
363                         continue;
364                 n = efx_fill_loopback_test(efx,
365                                            &tests->loopback[mode], mode, n,
366                                            strings, data);
367         }
368
369         return n;
370 }
371
372 static int efx_ethtool_get_stats_count(struct net_device *net_dev)
373 {
374         return EFX_ETHTOOL_NUM_STATS;
375 }
376
377 static int efx_ethtool_self_test_count(struct net_device *net_dev)
378 {
379         struct efx_nic *efx = net_dev->priv;
380
381         return efx_ethtool_fill_self_tests(efx, NULL, NULL, NULL);
382 }
383
384 static void efx_ethtool_get_strings(struct net_device *net_dev,
385                                     u32 string_set, u8 *strings)
386 {
387         struct efx_nic *efx = net_dev->priv;
388         struct ethtool_string *ethtool_strings =
389                 (struct ethtool_string *)strings;
390         int i;
391
392         switch (string_set) {
393         case ETH_SS_STATS:
394                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
395                         strncpy(ethtool_strings[i].name,
396                                 efx_ethtool_stats[i].name,
397                                 sizeof(ethtool_strings[i].name));
398                 break;
399         case ETH_SS_TEST:
400                 efx_ethtool_fill_self_tests(efx, NULL,
401                                             ethtool_strings, NULL);
402                 break;
403         default:
404                 /* No other string sets */
405                 break;
406         }
407 }
408
409 static void efx_ethtool_get_stats(struct net_device *net_dev,
410                                   struct ethtool_stats *stats,
411                                   u64 *data)
412 {
413         struct efx_nic *efx = net_dev->priv;
414         struct efx_mac_stats *mac_stats = &efx->mac_stats;
415         struct efx_ethtool_stat *stat;
416         struct efx_channel *channel;
417         int i;
418
419         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
420
421         /* Update MAC and NIC statistics */
422         net_dev->get_stats(net_dev);
423
424         /* Fill detailed statistics buffer */
425         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
426                 stat = &efx_ethtool_stats[i];
427                 switch (stat->source) {
428                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
429                         data[i] = stat->get_stat((void *)mac_stats +
430                                                  stat->offset);
431                         break;
432                 case EFX_ETHTOOL_STAT_SOURCE_nic:
433                         data[i] = stat->get_stat((void *)efx + stat->offset);
434                         break;
435                 case EFX_ETHTOOL_STAT_SOURCE_channel:
436                         data[i] = 0;
437                         efx_for_each_channel(channel, efx)
438                                 data[i] += stat->get_stat((void *)channel +
439                                                           stat->offset);
440                         break;
441                 }
442         }
443 }
444
445 static int efx_ethtool_set_tso(struct net_device *net_dev, u32 enable)
446 {
447         int rc;
448
449         /* Our TSO requires TX checksumming, so force TX checksumming
450          * on when TSO is enabled.
451          */
452         if (enable) {
453                 rc = efx_ethtool_set_tx_csum(net_dev, 1);
454                 if (rc)
455                         return rc;
456         }
457
458         return ethtool_op_set_tso(net_dev, enable);
459 }
460
461 static int efx_ethtool_set_tx_csum(struct net_device *net_dev, u32 enable)
462 {
463         struct efx_nic *efx = net_dev->priv;
464         int rc;
465
466         rc = ethtool_op_set_tx_csum(net_dev, enable);
467         if (rc)
468                 return rc;
469
470         efx_flush_queues(efx);
471
472         /* Our TSO requires TX checksumming, so disable TSO when
473          * checksumming is disabled
474          */
475         if (!enable) {
476                 rc = efx_ethtool_set_tso(net_dev, 0);
477                 if (rc)
478                         return rc;
479         }
480
481         return 0;
482 }
483
484 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
485 {
486         struct efx_nic *efx = net_dev->priv;
487
488         /* No way to stop the hardware doing the checks; we just
489          * ignore the result.
490          */
491         efx->rx_checksum_enabled = (enable ? 1 : 0);
492
493         return 0;
494 }
495
496 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
497 {
498         struct efx_nic *efx = net_dev->priv;
499
500         return efx->rx_checksum_enabled;
501 }
502
503 static void efx_ethtool_self_test(struct net_device *net_dev,
504                                   struct ethtool_test *test, u64 *data)
505 {
506         struct efx_nic *efx = net_dev->priv;
507         struct efx_self_tests efx_tests;
508         int offline, already_up;
509         int rc;
510
511         ASSERT_RTNL();
512         if (efx->state != STATE_RUNNING) {
513                 rc = -EIO;
514                 goto fail1;
515         }
516
517         /* We need rx buffers and interrupts. */
518         already_up = (efx->net_dev->flags & IFF_UP);
519         if (!already_up) {
520                 rc = dev_open(efx->net_dev);
521                 if (rc) {
522                         EFX_ERR(efx, "failed opening device.\n");
523                         goto fail2;
524                 }
525         }
526
527         memset(&efx_tests, 0, sizeof(efx_tests));
528         offline = (test->flags & ETH_TEST_FL_OFFLINE);
529
530         /* Perform online self tests first */
531         rc = efx_online_test(efx, &efx_tests);
532         if (rc)
533                 goto out;
534
535         /* Perform offline tests only if online tests passed */
536         if (offline) {
537                 /* Stop the kernel from sending packets during the test. */
538                 efx_stop_queue(efx);
539                 rc = efx_flush_queues(efx);
540                 if (!rc)
541                         rc = efx_offline_test(efx, &efx_tests,
542                                               efx->loopback_modes);
543                 efx_wake_queue(efx);
544         }
545
546  out:
547         if (!already_up)
548                 dev_close(efx->net_dev);
549
550         EFX_LOG(efx, "%s all %sline self-tests\n",
551                 rc == 0 ? "passed" : "failed", offline ? "off" : "on");
552
553  fail2:
554  fail1:
555         /* Fill ethtool results structures */
556         efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
557         if (rc)
558                 test->flags |= ETH_TEST_FL_FAILED;
559 }
560
561 /* Restart autonegotiation */
562 static int efx_ethtool_nway_reset(struct net_device *net_dev)
563 {
564         struct efx_nic *efx = net_dev->priv;
565
566         return mii_nway_restart(&efx->mii);
567 }
568
569 static u32 efx_ethtool_get_link(struct net_device *net_dev)
570 {
571         struct efx_nic *efx = net_dev->priv;
572
573         return efx->link_up;
574 }
575
576 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
577                                     struct ethtool_coalesce *coalesce)
578 {
579         struct efx_nic *efx = net_dev->priv;
580         struct efx_tx_queue *tx_queue;
581         struct efx_rx_queue *rx_queue;
582         struct efx_channel *channel;
583
584         memset(coalesce, 0, sizeof(*coalesce));
585
586         /* Find lowest IRQ moderation across all used TX queues */
587         coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
588         efx_for_each_tx_queue(tx_queue, efx) {
589                 channel = tx_queue->channel;
590                 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
591                         if (channel->used_flags != EFX_USED_BY_RX_TX)
592                                 coalesce->tx_coalesce_usecs_irq =
593                                         channel->irq_moderation;
594                         else
595                                 coalesce->tx_coalesce_usecs_irq = 0;
596                 }
597         }
598
599         /* Find lowest IRQ moderation across all used RX queues */
600         coalesce->rx_coalesce_usecs_irq = ~((u32) 0);
601         efx_for_each_rx_queue(rx_queue, efx) {
602                 channel = rx_queue->channel;
603                 if (channel->irq_moderation < coalesce->rx_coalesce_usecs_irq)
604                         coalesce->rx_coalesce_usecs_irq =
605                                 channel->irq_moderation;
606         }
607
608         return 0;
609 }
610
611 /* Set coalescing parameters
612  * The difficulties occur for shared channels
613  */
614 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
615                                     struct ethtool_coalesce *coalesce)
616 {
617         struct efx_nic *efx = net_dev->priv;
618         struct efx_channel *channel;
619         struct efx_tx_queue *tx_queue;
620         unsigned tx_usecs, rx_usecs;
621
622         if (coalesce->use_adaptive_rx_coalesce ||
623             coalesce->use_adaptive_tx_coalesce)
624                 return -EOPNOTSUPP;
625
626         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
627                 EFX_ERR(efx, "invalid coalescing setting. "
628                         "Only rx/tx_coalesce_usecs_irq are supported\n");
629                 return -EOPNOTSUPP;
630         }
631
632         rx_usecs = coalesce->rx_coalesce_usecs_irq;
633         tx_usecs = coalesce->tx_coalesce_usecs_irq;
634
635         /* If the channel is shared only allow RX parameters to be set */
636         efx_for_each_tx_queue(tx_queue, efx) {
637                 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
638                     tx_usecs) {
639                         EFX_ERR(efx, "Channel is shared. "
640                                 "Only RX coalescing may be set\n");
641                         return -EOPNOTSUPP;
642                 }
643         }
644
645         efx_init_irq_moderation(efx, tx_usecs, rx_usecs);
646
647         /* Reset channel to pick up new moderation value.  Note that
648          * this may change the value of the irq_moderation field
649          * (e.g. to allow for hardware timer granularity).
650          */
651         efx_for_each_channel(channel, efx)
652                 falcon_set_int_moderation(channel);
653
654         return 0;
655 }
656
657 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
658                                       struct ethtool_pauseparam *pause)
659 {
660         struct efx_nic *efx = net_dev->priv;
661         enum efx_fc_type flow_control = efx->flow_control;
662         int rc;
663
664         flow_control &= ~(EFX_FC_RX | EFX_FC_TX | EFX_FC_AUTO);
665         flow_control |= pause->rx_pause ? EFX_FC_RX : 0;
666         flow_control |= pause->tx_pause ? EFX_FC_TX : 0;
667         flow_control |= pause->autoneg ? EFX_FC_AUTO : 0;
668
669         /* Try to push the pause parameters */
670         mutex_lock(&efx->mac_lock);
671         rc = falcon_xmac_set_pause(efx, flow_control);
672         mutex_unlock(&efx->mac_lock);
673
674         if (!rc)
675                 efx_reconfigure_port(efx);
676
677         return rc;
678 }
679
680 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
681                                        struct ethtool_pauseparam *pause)
682 {
683         struct efx_nic *efx = net_dev->priv;
684
685         pause->rx_pause = (efx->flow_control & EFX_FC_RX) ? 1 : 0;
686         pause->tx_pause = (efx->flow_control & EFX_FC_TX) ? 1 : 0;
687         pause->autoneg = (efx->flow_control & EFX_FC_AUTO) ? 1 : 0;
688 }
689
690
691 struct ethtool_ops efx_ethtool_ops = {
692         .get_settings           = efx_ethtool_get_settings,
693         .set_settings           = efx_ethtool_set_settings,
694         .get_drvinfo            = efx_ethtool_get_drvinfo,
695         .nway_reset             = efx_ethtool_nway_reset,
696         .get_link               = efx_ethtool_get_link,
697         .get_coalesce           = efx_ethtool_get_coalesce,
698         .set_coalesce           = efx_ethtool_set_coalesce,
699         .get_pauseparam         = efx_ethtool_get_pauseparam,
700         .set_pauseparam         = efx_ethtool_set_pauseparam,
701         .get_rx_csum            = efx_ethtool_get_rx_csum,
702         .set_rx_csum            = efx_ethtool_set_rx_csum,
703         .get_tx_csum            = ethtool_op_get_tx_csum,
704         .set_tx_csum            = efx_ethtool_set_tx_csum,
705         .get_sg                 = ethtool_op_get_sg,
706         .set_sg                 = ethtool_op_set_sg,
707         .get_tso                = ethtool_op_get_tso,
708         .set_tso                = efx_ethtool_set_tso,
709         .get_flags              = ethtool_op_get_flags,
710         .set_flags              = ethtool_op_set_flags,
711         .self_test_count        = efx_ethtool_self_test_count,
712         .self_test              = efx_ethtool_self_test,
713         .get_strings            = efx_ethtool_get_strings,
714         .phys_id                = efx_ethtool_phys_id,
715         .get_stats_count        = efx_ethtool_get_stats_count,
716         .get_ethtool_stats      = efx_ethtool_get_stats,
717 };