sfc: Maintain interrupt moderation values in ticks, not microseconds
[linux-2.6.git] / 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/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
24 const 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
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 #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
177
178 /**************************************************************************
179  *
180  * Ethtool operations
181  *
182  **************************************************************************
183  */
184
185 /* Identify device by flashing LEDs */
186 static 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. */
201 int 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. */
217 int 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
239 static 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  */
262 static 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  */
303 static 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  */
340 static 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
391 static 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
405 static 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
430 static 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
466 static 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
478 static 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
485 static 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 */
529 static 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
536 static 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
543 static 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
554 static 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
574 static 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
596 static 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         coalesce->tx_coalesce_usecs_irq *= FALCON_IRQ_MOD_RESOLUTION;
622         coalesce->rx_coalesce_usecs_irq *= FALCON_IRQ_MOD_RESOLUTION;
623
624         return 0;
625 }
626
627 /* Set coalescing parameters
628  * The difficulties occur for shared channels
629  */
630 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
631                                     struct ethtool_coalesce *coalesce)
632 {
633         struct efx_nic *efx = netdev_priv(net_dev);
634         struct efx_channel *channel;
635         struct efx_tx_queue *tx_queue;
636         unsigned tx_usecs, rx_usecs, adaptive;
637
638         if (coalesce->use_adaptive_tx_coalesce)
639                 return -EOPNOTSUPP;
640
641         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
642                 EFX_ERR(efx, "invalid coalescing setting. "
643                         "Only rx/tx_coalesce_usecs_irq are supported\n");
644                 return -EOPNOTSUPP;
645         }
646
647         rx_usecs = coalesce->rx_coalesce_usecs_irq;
648         tx_usecs = coalesce->tx_coalesce_usecs_irq;
649         adaptive = coalesce->use_adaptive_rx_coalesce;
650
651         /* If the channel is shared only allow RX parameters to be set */
652         efx_for_each_tx_queue(tx_queue, efx) {
653                 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
654                     tx_usecs) {
655                         EFX_ERR(efx, "Channel is shared. "
656                                 "Only RX coalescing may be set\n");
657                         return -EOPNOTSUPP;
658                 }
659         }
660
661         efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive);
662         efx_for_each_channel(channel, efx)
663                 falcon_set_int_moderation(channel);
664
665         return 0;
666 }
667
668 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
669                                       struct ethtool_pauseparam *pause)
670 {
671         struct efx_nic *efx = netdev_priv(net_dev);
672         enum efx_fc_type wanted_fc;
673         bool reset;
674
675         wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
676                      (pause->tx_pause ? EFX_FC_TX : 0) |
677                      (pause->autoneg ? EFX_FC_AUTO : 0));
678
679         if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
680                 EFX_LOG(efx, "Flow control unsupported: tx ON rx OFF\n");
681                 return -EINVAL;
682         }
683
684         if (!(efx->phy_op->mmds & MDIO_DEVS_AN) &&
685             (wanted_fc & EFX_FC_AUTO)) {
686                 EFX_LOG(efx, "PHY does not support flow control "
687                         "autonegotiation\n");
688                 return -EINVAL;
689         }
690
691         /* TX flow control may automatically turn itself off if the
692          * link partner (intermittently) stops responding to pause
693          * frames. There isn't any indication that this has happened,
694          * so the best we do is leave it up to the user to spot this
695          * and fix it be cycling transmit flow control on this end. */
696         reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
697         if (EFX_WORKAROUND_11482(efx) && reset) {
698                 if (falcon_rev(efx) >= FALCON_REV_B0) {
699                         /* Recover by resetting the EM block */
700                         if (efx->link_up)
701                                 falcon_drain_tx_fifo(efx);
702                 } else {
703                         /* Schedule a reset to recover */
704                         efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
705                 }
706         }
707
708         /* Try to push the pause parameters */
709         mutex_lock(&efx->mac_lock);
710
711         efx->wanted_fc = wanted_fc;
712         if (efx->phy_op->mmds & MDIO_DEVS_AN)
713                 mdio45_ethtool_spauseparam_an(&efx->mdio, pause);
714         __efx_reconfigure_port(efx);
715
716         mutex_unlock(&efx->mac_lock);
717
718         return 0;
719 }
720
721 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
722                                        struct ethtool_pauseparam *pause)
723 {
724         struct efx_nic *efx = netdev_priv(net_dev);
725
726         pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
727         pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
728         pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
729 }
730
731
732 const struct ethtool_ops efx_ethtool_ops = {
733         .get_settings           = efx_ethtool_get_settings,
734         .set_settings           = efx_ethtool_set_settings,
735         .get_drvinfo            = efx_ethtool_get_drvinfo,
736         .nway_reset             = efx_ethtool_nway_reset,
737         .get_link               = efx_ethtool_get_link,
738         .get_eeprom_len         = efx_ethtool_get_eeprom_len,
739         .get_eeprom             = efx_ethtool_get_eeprom,
740         .set_eeprom             = efx_ethtool_set_eeprom,
741         .get_coalesce           = efx_ethtool_get_coalesce,
742         .set_coalesce           = efx_ethtool_set_coalesce,
743         .get_pauseparam         = efx_ethtool_get_pauseparam,
744         .set_pauseparam         = efx_ethtool_set_pauseparam,
745         .get_rx_csum            = efx_ethtool_get_rx_csum,
746         .set_rx_csum            = efx_ethtool_set_rx_csum,
747         .get_tx_csum            = ethtool_op_get_tx_csum,
748         .set_tx_csum            = ethtool_op_set_tx_csum,
749         .get_sg                 = ethtool_op_get_sg,
750         .set_sg                 = ethtool_op_set_sg,
751         .get_tso                = ethtool_op_get_tso,
752         .set_tso                = ethtool_op_set_tso,
753         .get_flags              = ethtool_op_get_flags,
754         .set_flags              = ethtool_op_set_flags,
755         .get_sset_count         = efx_ethtool_get_sset_count,
756         .self_test              = efx_ethtool_self_test,
757         .get_strings            = efx_ethtool_get_strings,
758         .phys_id                = efx_ethtool_phys_id,
759         .get_ethtool_stats      = efx_ethtool_get_stats,
760 };