netdev: change name dropping error codes
[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 "spi.h"
21 #include "mac.h"
22
23 const 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
36 struct ethtool_string {
37         char name[ETH_GSTRING_LEN];
38 };
39
40 struct efx_ethtool_stat {
41         const char *name;
42         enum {
43                 EFX_ETHTOOL_STAT_SOURCE_mac_stats,
44                 EFX_ETHTOOL_STAT_SOURCE_nic,
45                 EFX_ETHTOOL_STAT_SOURCE_channel
46         } source;
47         unsigned offset;
48         u64(*get_stat) (void *field); /* Reader function */
49 };
50
51 /* Initialiser for a struct #efx_ethtool_stat with type-checking */
52 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
53                                 get_stat_function) {                    \
54         .name = #stat_name,                                             \
55         .source = EFX_ETHTOOL_STAT_SOURCE_##source_name,                \
56         .offset = ((((field_type *) 0) ==                               \
57                       &((struct efx_##source_name *)0)->field) ?        \
58                     offsetof(struct efx_##source_name, field) :         \
59                     offsetof(struct efx_##source_name, field)),         \
60         .get_stat = get_stat_function,                                  \
61 }
62
63 static u64 efx_get_uint_stat(void *field)
64 {
65         return *(unsigned int *)field;
66 }
67
68 static u64 efx_get_ulong_stat(void *field)
69 {
70         return *(unsigned long *)field;
71 }
72
73 static u64 efx_get_u64_stat(void *field)
74 {
75         return *(u64 *) field;
76 }
77
78 static u64 efx_get_atomic_stat(void *field)
79 {
80         return atomic_read((atomic_t *) field);
81 }
82
83 #define EFX_ETHTOOL_ULONG_MAC_STAT(field)                       \
84         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
85                           unsigned long, efx_get_ulong_stat)
86
87 #define EFX_ETHTOOL_U64_MAC_STAT(field)                         \
88         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
89                           u64, efx_get_u64_stat)
90
91 #define EFX_ETHTOOL_UINT_NIC_STAT(name)                         \
92         EFX_ETHTOOL_STAT(name, nic, n_##name,                   \
93                          unsigned int, efx_get_uint_stat)
94
95 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field)                \
96         EFX_ETHTOOL_STAT(field, nic, field,                     \
97                          atomic_t, efx_get_atomic_stat)
98
99 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field)                    \
100         EFX_ETHTOOL_STAT(field, channel, n_##field,             \
101                          unsigned int, efx_get_uint_stat)
102
103 static struct efx_ethtool_stat efx_ethtool_stats[] = {
104         EFX_ETHTOOL_U64_MAC_STAT(tx_bytes),
105         EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes),
106         EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes),
107         EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets),
108         EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad),
109         EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause),
110         EFX_ETHTOOL_ULONG_MAC_STAT(tx_control),
111         EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast),
112         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast),
113         EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast),
114         EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64),
115         EFX_ETHTOOL_ULONG_MAC_STAT(tx_64),
116         EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127),
117         EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255),
118         EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511),
119         EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023),
120         EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx),
121         EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo),
122         EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo),
123         EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision),
124         EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision),
125         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision),
126         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision),
127         EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred),
128         EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision),
129         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred),
130         EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp),
131         EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error),
132         EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error),
133         EFX_ETHTOOL_U64_MAC_STAT(rx_bytes),
134         EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes),
135         EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes),
136         EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets),
137         EFX_ETHTOOL_ULONG_MAC_STAT(rx_good),
138         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad),
139         EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause),
140         EFX_ETHTOOL_ULONG_MAC_STAT(rx_control),
141         EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast),
142         EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast),
143         EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast),
144         EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64),
145         EFX_ETHTOOL_ULONG_MAC_STAT(rx_64),
146         EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127),
147         EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255),
148         EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511),
149         EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023),
150         EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx),
151         EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo),
152         EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo),
153         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64),
154         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx),
155         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo),
156         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo),
157         EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow),
158         EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed),
159         EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier),
160         EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error),
161         EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error),
162         EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error),
163         EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error),
164         EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt),
165         EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
166         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
167         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
168         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
169         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
170 };
171
172 /* Number of ethtool statistics */
173 #define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
174
175 /* 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
180 /**************************************************************************
181  *
182  * Ethtool operations
183  *
184  **************************************************************************
185  */
186
187 /* Identify device by flashing LEDs */
188 static int efx_ethtool_phys_id(struct net_device *net_dev, u32 seconds)
189 {
190         struct efx_nic *efx = netdev_priv(net_dev);
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. */
199 int efx_ethtool_get_settings(struct net_device *net_dev,
200                              struct ethtool_cmd *ecmd)
201 {
202         struct efx_nic *efx = netdev_priv(net_dev);
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. */
213 int efx_ethtool_set_settings(struct net_device *net_dev,
214                              struct ethtool_cmd *ecmd)
215 {
216         struct efx_nic *efx = netdev_priv(net_dev);
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
228 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
229                                     struct ethtool_drvinfo *info)
230 {
231         struct efx_nic *efx = netdev_priv(net_dev);
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
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  */
251 static 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  */
290 static 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  */
327 static 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         efx_fill_test(n++, strings, data, &tests->mii,
337                       "core", 0, "mii", NULL);
338         efx_fill_test(n++, strings, data, &tests->nvram,
339                       "core", 0, "nvram", NULL);
340         efx_fill_test(n++, strings, data, &tests->interrupt,
341                       "core", 0, "interrupt", NULL);
342
343         /* Event queues */
344         efx_for_each_channel(channel, efx) {
345                 efx_fill_test(n++, strings, data,
346                               &tests->eventq_dma[channel->channel],
347                               EFX_CHANNEL_NAME(channel),
348                               "eventq.dma", NULL);
349                 efx_fill_test(n++, strings, data,
350                               &tests->eventq_int[channel->channel],
351                               EFX_CHANNEL_NAME(channel),
352                               "eventq.int", NULL);
353                 efx_fill_test(n++, strings, data,
354                               &tests->eventq_poll[channel->channel],
355                               EFX_CHANNEL_NAME(channel),
356                               "eventq.poll", NULL);
357         }
358
359         efx_fill_test(n++, strings, data, &tests->registers,
360                       "core", 0, "registers", NULL);
361         efx_fill_test(n++, strings, data, &tests->phy,
362                       EFX_PORT_NAME, "phy", NULL);
363
364         /* Loopback tests */
365         efx_fill_test(n++, strings, data, &tests->loopback_speed,
366                       EFX_PORT_NAME, "loopback.speed", NULL);
367         efx_fill_test(n++, strings, data, &tests->loopback_full_duplex,
368                       EFX_PORT_NAME, "loopback.full_duplex", NULL);
369         for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
370                 if (!(efx->loopback_modes & (1 << mode)))
371                         continue;
372                 n = efx_fill_loopback_test(efx,
373                                            &tests->loopback[mode], mode, n,
374                                            strings, data);
375         }
376
377         return n;
378 }
379
380 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
381                                       int string_set)
382 {
383         switch (string_set) {
384         case ETH_SS_STATS:
385                 return EFX_ETHTOOL_NUM_STATS;
386         case ETH_SS_TEST:
387                 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
388                                                    NULL, NULL, NULL);
389         default:
390                 return -EINVAL;
391         }
392 }
393
394 static void efx_ethtool_get_strings(struct net_device *net_dev,
395                                     u32 string_set, u8 *strings)
396 {
397         struct efx_nic *efx = netdev_priv(net_dev);
398         struct ethtool_string *ethtool_strings =
399                 (struct ethtool_string *)strings;
400         int i;
401
402         switch (string_set) {
403         case ETH_SS_STATS:
404                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
405                         strncpy(ethtool_strings[i].name,
406                                 efx_ethtool_stats[i].name,
407                                 sizeof(ethtool_strings[i].name));
408                 break;
409         case ETH_SS_TEST:
410                 efx_ethtool_fill_self_tests(efx, NULL,
411                                             ethtool_strings, NULL);
412                 break;
413         default:
414                 /* No other string sets */
415                 break;
416         }
417 }
418
419 static void efx_ethtool_get_stats(struct net_device *net_dev,
420                                   struct ethtool_stats *stats,
421                                   u64 *data)
422 {
423         struct efx_nic *efx = netdev_priv(net_dev);
424         struct efx_mac_stats *mac_stats = &efx->mac_stats;
425         struct efx_ethtool_stat *stat;
426         struct efx_channel *channel;
427         int i;
428
429         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
430
431         /* Update MAC and NIC statistics */
432         net_dev->get_stats(net_dev);
433
434         /* Fill detailed statistics buffer */
435         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
436                 stat = &efx_ethtool_stats[i];
437                 switch (stat->source) {
438                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
439                         data[i] = stat->get_stat((void *)mac_stats +
440                                                  stat->offset);
441                         break;
442                 case EFX_ETHTOOL_STAT_SOURCE_nic:
443                         data[i] = stat->get_stat((void *)efx + stat->offset);
444                         break;
445                 case EFX_ETHTOOL_STAT_SOURCE_channel:
446                         data[i] = 0;
447                         efx_for_each_channel(channel, efx)
448                                 data[i] += stat->get_stat((void *)channel +
449                                                           stat->offset);
450                         break;
451                 }
452         }
453 }
454
455 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
456 {
457         struct efx_nic *efx = netdev_priv(net_dev);
458
459         /* No way to stop the hardware doing the checks; we just
460          * ignore the result.
461          */
462         efx->rx_checksum_enabled = !!enable;
463
464         return 0;
465 }
466
467 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
468 {
469         struct efx_nic *efx = netdev_priv(net_dev);
470
471         return efx->rx_checksum_enabled;
472 }
473
474 static void efx_ethtool_self_test(struct net_device *net_dev,
475                                   struct ethtool_test *test, u64 *data)
476 {
477         struct efx_nic *efx = netdev_priv(net_dev);
478         struct efx_self_tests efx_tests;
479         int offline, already_up;
480         int rc;
481
482         ASSERT_RTNL();
483         if (efx->state != STATE_RUNNING) {
484                 rc = -EIO;
485                 goto fail1;
486         }
487
488         /* We need rx buffers and interrupts. */
489         already_up = (efx->net_dev->flags & IFF_UP);
490         if (!already_up) {
491                 rc = dev_open(efx->net_dev);
492                 if (rc) {
493                         EFX_ERR(efx, "failed opening device.\n");
494                         goto fail2;
495                 }
496         }
497
498         memset(&efx_tests, 0, sizeof(efx_tests));
499         offline = (test->flags & ETH_TEST_FL_OFFLINE);
500
501         /* Perform online self tests first */
502         rc = efx_online_test(efx, &efx_tests);
503         if (rc)
504                 goto out;
505
506         /* Perform offline tests only if online tests passed */
507         if (offline)
508                 rc = efx_offline_test(efx, &efx_tests,
509                                       efx->loopback_modes);
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
526 /* Restart autonegotiation */
527 static int efx_ethtool_nway_reset(struct net_device *net_dev)
528 {
529         struct efx_nic *efx = netdev_priv(net_dev);
530
531         return mii_nway_restart(&efx->mii);
532 }
533
534 static u32 efx_ethtool_get_link(struct net_device *net_dev)
535 {
536         struct efx_nic *efx = netdev_priv(net_dev);
537
538         return efx->link_up;
539 }
540
541 static 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
552 static 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
567 static 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
584 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
585                                     struct ethtool_coalesce *coalesce)
586 {
587         struct efx_nic *efx = netdev_priv(net_dev);
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  */
622 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
623                                     struct ethtool_coalesce *coalesce)
624 {
625         struct efx_nic *efx = netdev_priv(net_dev);
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
665 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
666                                       struct ethtool_pauseparam *pause)
667 {
668         struct efx_nic *efx = netdev_priv(net_dev);
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
688 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
689                                        struct ethtool_pauseparam *pause)
690 {
691         struct efx_nic *efx = netdev_priv(net_dev);
692
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);
696 }
697
698
699 struct 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,
705         .get_eeprom_len         = efx_ethtool_get_eeprom_len,
706         .get_eeprom             = efx_ethtool_get_eeprom,
707         .set_eeprom             = efx_ethtool_set_eeprom,
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,
715         .set_tx_csum            = ethtool_op_set_tx_csum,
716         .get_sg                 = ethtool_op_get_sg,
717         .set_sg                 = ethtool_op_set_sg,
718         .get_tso                = ethtool_op_get_tso,
719         .set_tso                = ethtool_op_set_tso,
720         .get_flags              = ethtool_op_get_flags,
721         .set_flags              = ethtool_op_set_flags,
722         .get_sset_count         = efx_ethtool_get_sset_count,
723         .self_test              = efx_ethtool_self_test,
724         .get_strings            = efx_ethtool_get_strings,
725         .phys_id                = efx_ethtool_phys_id,
726         .get_ethtool_stats      = efx_ethtool_get_stats,
727 };