Merge commit 'v2.6.29' into x86/setup-lzma
[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 "workarounds.h"
16 #include "selftest.h"
17 #include "efx.h"
18 #include "ethtool.h"
19 #include "falcon.h"
20 #include "spi.h"
21 #include "mdio_10g.h"
22
23 const char *efx_loopback_mode_names[] = {
24         [LOOPBACK_NONE]         = "NONE",
25         [LOOPBACK_GMAC]         = "GMAC",
26         [LOOPBACK_XGMII]        = "XGMII",
27         [LOOPBACK_XGXS]         = "XGXS",
28         [LOOPBACK_XAUI]         = "XAUI",
29         [LOOPBACK_GPHY]         = "GPHY",
30         [LOOPBACK_PHYXS]        = "PHYXS",
31         [LOOPBACK_PCS]          = "PCS",
32         [LOOPBACK_PMAPMD]       = "PMA/PMD",
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 #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
176
177 /**************************************************************************
178  *
179  * Ethtool operations
180  *
181  **************************************************************************
182  */
183
184 /* Identify device by flashing LEDs */
185 static int efx_ethtool_phys_id(struct net_device *net_dev, u32 count)
186 {
187         struct efx_nic *efx = netdev_priv(net_dev);
188
189         efx->board_info.blink(efx, 1);
190         set_current_state(TASK_INTERRUPTIBLE);
191         if (count)
192                 schedule_timeout(count * HZ);
193         else
194                 schedule();
195         efx->board_info.blink(efx, 0);
196         return 0;
197 }
198
199 /* This must be called with rtnl_lock held. */
200 int efx_ethtool_get_settings(struct net_device *net_dev,
201                              struct ethtool_cmd *ecmd)
202 {
203         struct efx_nic *efx = netdev_priv(net_dev);
204
205         mutex_lock(&efx->mac_lock);
206         efx->phy_op->get_settings(efx, ecmd);
207         mutex_unlock(&efx->mac_lock);
208
209         /* Falcon GMAC does not support 1000Mbps HD */
210         ecmd->supported &= ~SUPPORTED_1000baseT_Half;
211
212         return 0;
213 }
214
215 /* This must be called with rtnl_lock held. */
216 int efx_ethtool_set_settings(struct net_device *net_dev,
217                              struct ethtool_cmd *ecmd)
218 {
219         struct efx_nic *efx = netdev_priv(net_dev);
220         int rc;
221
222         /* Falcon GMAC does not support 1000Mbps HD */
223         if (ecmd->speed == SPEED_1000 && ecmd->duplex != DUPLEX_FULL) {
224                 EFX_LOG(efx, "rejecting unsupported 1000Mbps HD"
225                         " setting\n");
226                 return -EINVAL;
227         }
228
229         mutex_lock(&efx->mac_lock);
230         rc = efx->phy_op->set_settings(efx, ecmd);
231         mutex_unlock(&efx->mac_lock);
232         if (!rc)
233                 efx_reconfigure_port(efx);
234
235         return rc;
236 }
237
238 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
239                                     struct ethtool_drvinfo *info)
240 {
241         struct efx_nic *efx = netdev_priv(net_dev);
242
243         strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver));
244         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
245         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
246 }
247
248 /**
249  * efx_fill_test - fill in an individual self-test entry
250  * @test_index:         Index of the test
251  * @strings:            Ethtool strings, or %NULL
252  * @data:               Ethtool test results, or %NULL
253  * @test:               Pointer to test result (used only if data != %NULL)
254  * @unit_format:        Unit name format (e.g. "chan\%d")
255  * @unit_id:            Unit id (e.g. 0 for "chan0")
256  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
257  * @test_id:            Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
258  *
259  * Fill in an individual self-test entry.
260  */
261 static void efx_fill_test(unsigned int test_index,
262                           struct ethtool_string *strings, u64 *data,
263                           int *test, const char *unit_format, int unit_id,
264                           const char *test_format, const char *test_id)
265 {
266         struct ethtool_string unit_str, test_str;
267
268         /* Fill data value, if applicable */
269         if (data)
270                 data[test_index] = *test;
271
272         /* Fill string, if applicable */
273         if (strings) {
274                 if (strchr(unit_format, '%'))
275                         snprintf(unit_str.name, sizeof(unit_str.name),
276                                  unit_format, unit_id);
277                 else
278                         strcpy(unit_str.name, unit_format);
279                 snprintf(test_str.name, sizeof(test_str.name),
280                          test_format, test_id);
281                 snprintf(strings[test_index].name,
282                          sizeof(strings[test_index].name),
283                          "%-6s %-24s", unit_str.name, test_str.name);
284         }
285 }
286
287 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
288 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
289 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
290 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
291         "loopback.%s." _counter, LOOPBACK_MODE_NAME(mode)
292
293 /**
294  * efx_fill_loopback_test - fill in a block of loopback self-test entries
295  * @efx:                Efx NIC
296  * @lb_tests:           Efx loopback self-test results structure
297  * @mode:               Loopback test mode
298  * @test_index:         Starting index of the test
299  * @strings:            Ethtool strings, or %NULL
300  * @data:               Ethtool test results, or %NULL
301  */
302 static int efx_fill_loopback_test(struct efx_nic *efx,
303                                   struct efx_loopback_self_tests *lb_tests,
304                                   enum efx_loopback_mode mode,
305                                   unsigned int test_index,
306                                   struct ethtool_string *strings, u64 *data)
307 {
308         struct efx_tx_queue *tx_queue;
309
310         efx_for_each_tx_queue(tx_queue, efx) {
311                 efx_fill_test(test_index++, strings, data,
312                               &lb_tests->tx_sent[tx_queue->queue],
313                               EFX_TX_QUEUE_NAME(tx_queue),
314                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
315                 efx_fill_test(test_index++, strings, data,
316                               &lb_tests->tx_done[tx_queue->queue],
317                               EFX_TX_QUEUE_NAME(tx_queue),
318                               EFX_LOOPBACK_NAME(mode, "tx_done"));
319         }
320         efx_fill_test(test_index++, strings, data,
321                       &lb_tests->rx_good,
322                       "rx", 0,
323                       EFX_LOOPBACK_NAME(mode, "rx_good"));
324         efx_fill_test(test_index++, strings, data,
325                       &lb_tests->rx_bad,
326                       "rx", 0,
327                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
328
329         return test_index;
330 }
331
332 /**
333  * efx_ethtool_fill_self_tests - get self-test details
334  * @efx:                Efx NIC
335  * @tests:              Efx self-test results structure, or %NULL
336  * @strings:            Ethtool strings, or %NULL
337  * @data:               Ethtool test results, or %NULL
338  */
339 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
340                                        struct efx_self_tests *tests,
341                                        struct ethtool_string *strings,
342                                        u64 *data)
343 {
344         struct efx_channel *channel;
345         unsigned int n = 0, i;
346         enum efx_loopback_mode mode;
347
348         efx_fill_test(n++, strings, data, &tests->mii,
349                       "core", 0, "mii", NULL);
350         efx_fill_test(n++, strings, data, &tests->nvram,
351                       "core", 0, "nvram", NULL);
352         efx_fill_test(n++, strings, data, &tests->interrupt,
353                       "core", 0, "interrupt", NULL);
354
355         /* Event queues */
356         efx_for_each_channel(channel, efx) {
357                 efx_fill_test(n++, strings, data,
358                               &tests->eventq_dma[channel->channel],
359                               EFX_CHANNEL_NAME(channel),
360                               "eventq.dma", NULL);
361                 efx_fill_test(n++, strings, data,
362                               &tests->eventq_int[channel->channel],
363                               EFX_CHANNEL_NAME(channel),
364                               "eventq.int", NULL);
365                 efx_fill_test(n++, strings, data,
366                               &tests->eventq_poll[channel->channel],
367                               EFX_CHANNEL_NAME(channel),
368                               "eventq.poll", NULL);
369         }
370
371         efx_fill_test(n++, strings, data, &tests->registers,
372                       "core", 0, "registers", NULL);
373
374         for (i = 0; i < efx->phy_op->num_tests; i++)
375                 efx_fill_test(n++, strings, data, &tests->phy[i],
376                               "phy", 0, efx->phy_op->test_names[i], NULL);
377
378         /* Loopback tests */
379         for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
380                 if (!(efx->loopback_modes & (1 << mode)))
381                         continue;
382                 n = efx_fill_loopback_test(efx,
383                                            &tests->loopback[mode], mode, n,
384                                            strings, data);
385         }
386
387         return n;
388 }
389
390 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
391                                       int string_set)
392 {
393         switch (string_set) {
394         case ETH_SS_STATS:
395                 return EFX_ETHTOOL_NUM_STATS;
396         case ETH_SS_TEST:
397                 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
398                                                    NULL, NULL, NULL);
399         default:
400                 return -EINVAL;
401         }
402 }
403
404 static void efx_ethtool_get_strings(struct net_device *net_dev,
405                                     u32 string_set, u8 *strings)
406 {
407         struct efx_nic *efx = netdev_priv(net_dev);
408         struct ethtool_string *ethtool_strings =
409                 (struct ethtool_string *)strings;
410         int i;
411
412         switch (string_set) {
413         case ETH_SS_STATS:
414                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
415                         strncpy(ethtool_strings[i].name,
416                                 efx_ethtool_stats[i].name,
417                                 sizeof(ethtool_strings[i].name));
418                 break;
419         case ETH_SS_TEST:
420                 efx_ethtool_fill_self_tests(efx, NULL,
421                                             ethtool_strings, NULL);
422                 break;
423         default:
424                 /* No other string sets */
425                 break;
426         }
427 }
428
429 static void efx_ethtool_get_stats(struct net_device *net_dev,
430                                   struct ethtool_stats *stats,
431                                   u64 *data)
432 {
433         struct efx_nic *efx = netdev_priv(net_dev);
434         struct efx_mac_stats *mac_stats = &efx->mac_stats;
435         struct efx_ethtool_stat *stat;
436         struct efx_channel *channel;
437         int i;
438
439         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
440
441         /* Update MAC and NIC statistics */
442         dev_get_stats(net_dev);
443
444         /* Fill detailed statistics buffer */
445         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
446                 stat = &efx_ethtool_stats[i];
447                 switch (stat->source) {
448                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
449                         data[i] = stat->get_stat((void *)mac_stats +
450                                                  stat->offset);
451                         break;
452                 case EFX_ETHTOOL_STAT_SOURCE_nic:
453                         data[i] = stat->get_stat((void *)efx + stat->offset);
454                         break;
455                 case EFX_ETHTOOL_STAT_SOURCE_channel:
456                         data[i] = 0;
457                         efx_for_each_channel(channel, efx)
458                                 data[i] += stat->get_stat((void *)channel +
459                                                           stat->offset);
460                         break;
461                 }
462         }
463 }
464
465 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
466 {
467         struct efx_nic *efx = netdev_priv(net_dev);
468
469         /* No way to stop the hardware doing the checks; we just
470          * ignore the result.
471          */
472         efx->rx_checksum_enabled = !!enable;
473
474         return 0;
475 }
476
477 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
478 {
479         struct efx_nic *efx = netdev_priv(net_dev);
480
481         return efx->rx_checksum_enabled;
482 }
483
484 static void efx_ethtool_self_test(struct net_device *net_dev,
485                                   struct ethtool_test *test, u64 *data)
486 {
487         struct efx_nic *efx = netdev_priv(net_dev);
488         struct efx_self_tests efx_tests;
489         int already_up;
490         int rc;
491
492         ASSERT_RTNL();
493         if (efx->state != STATE_RUNNING) {
494                 rc = -EIO;
495                 goto fail1;
496         }
497
498         /* We need rx buffers and interrupts. */
499         already_up = (efx->net_dev->flags & IFF_UP);
500         if (!already_up) {
501                 rc = dev_open(efx->net_dev);
502                 if (rc) {
503                         EFX_ERR(efx, "failed opening device.\n");
504                         goto fail2;
505                 }
506         }
507
508         memset(&efx_tests, 0, sizeof(efx_tests));
509
510         rc = efx_selftest(efx, &efx_tests, test->flags);
511
512         if (!already_up)
513                 dev_close(efx->net_dev);
514
515         EFX_LOG(efx, "%s %sline self-tests\n",
516                 rc == 0 ? "passed" : "failed",
517                 (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
518
519  fail2:
520  fail1:
521         /* Fill ethtool results structures */
522         efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
523         if (rc)
524                 test->flags |= ETH_TEST_FL_FAILED;
525 }
526
527 /* Restart autonegotiation */
528 static int efx_ethtool_nway_reset(struct net_device *net_dev)
529 {
530         struct efx_nic *efx = netdev_priv(net_dev);
531
532         return mii_nway_restart(&efx->mii);
533 }
534
535 static u32 efx_ethtool_get_link(struct net_device *net_dev)
536 {
537         struct efx_nic *efx = netdev_priv(net_dev);
538
539         return efx->link_up;
540 }
541
542 static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
543 {
544         struct efx_nic *efx = netdev_priv(net_dev);
545         struct efx_spi_device *spi = efx->spi_eeprom;
546
547         if (!spi)
548                 return 0;
549         return min(spi->size, EFX_EEPROM_BOOTCONFIG_END) -
550                 min(spi->size, EFX_EEPROM_BOOTCONFIG_START);
551 }
552
553 static int efx_ethtool_get_eeprom(struct net_device *net_dev,
554                                   struct ethtool_eeprom *eeprom, u8 *buf)
555 {
556         struct efx_nic *efx = netdev_priv(net_dev);
557         struct efx_spi_device *spi = efx->spi_eeprom;
558         size_t len;
559         int rc;
560
561         rc = mutex_lock_interruptible(&efx->spi_lock);
562         if (rc)
563                 return rc;
564         rc = falcon_spi_read(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
565                              eeprom->len, &len, buf);
566         mutex_unlock(&efx->spi_lock);
567
568         eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC;
569         eeprom->len = len;
570         return rc;
571 }
572
573 static int efx_ethtool_set_eeprom(struct net_device *net_dev,
574                                   struct ethtool_eeprom *eeprom, u8 *buf)
575 {
576         struct efx_nic *efx = netdev_priv(net_dev);
577         struct efx_spi_device *spi = efx->spi_eeprom;
578         size_t len;
579         int rc;
580
581         if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC)
582                 return -EINVAL;
583
584         rc = mutex_lock_interruptible(&efx->spi_lock);
585         if (rc)
586                 return rc;
587         rc = falcon_spi_write(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
588                               eeprom->len, &len, buf);
589         mutex_unlock(&efx->spi_lock);
590
591         eeprom->len = len;
592         return rc;
593 }
594
595 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
596                                     struct ethtool_coalesce *coalesce)
597 {
598         struct efx_nic *efx = netdev_priv(net_dev);
599         struct efx_tx_queue *tx_queue;
600         struct efx_rx_queue *rx_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         /* Find lowest IRQ moderation across all used RX queues */
619         coalesce->rx_coalesce_usecs_irq = ~((u32) 0);
620         efx_for_each_rx_queue(rx_queue, efx) {
621                 channel = rx_queue->channel;
622                 if (channel->irq_moderation < coalesce->rx_coalesce_usecs_irq)
623                         coalesce->rx_coalesce_usecs_irq =
624                                 channel->irq_moderation;
625         }
626
627         return 0;
628 }
629
630 /* Set coalescing parameters
631  * The difficulties occur for shared channels
632  */
633 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
634                                     struct ethtool_coalesce *coalesce)
635 {
636         struct efx_nic *efx = netdev_priv(net_dev);
637         struct efx_channel *channel;
638         struct efx_tx_queue *tx_queue;
639         unsigned tx_usecs, rx_usecs;
640
641         if (coalesce->use_adaptive_rx_coalesce ||
642             coalesce->use_adaptive_tx_coalesce)
643                 return -EOPNOTSUPP;
644
645         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
646                 EFX_ERR(efx, "invalid coalescing setting. "
647                         "Only rx/tx_coalesce_usecs_irq are supported\n");
648                 return -EOPNOTSUPP;
649         }
650
651         rx_usecs = coalesce->rx_coalesce_usecs_irq;
652         tx_usecs = coalesce->tx_coalesce_usecs_irq;
653
654         /* If the channel is shared only allow RX parameters to be set */
655         efx_for_each_tx_queue(tx_queue, efx) {
656                 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
657                     tx_usecs) {
658                         EFX_ERR(efx, "Channel is shared. "
659                                 "Only RX coalescing may be set\n");
660                         return -EOPNOTSUPP;
661                 }
662         }
663
664         efx_init_irq_moderation(efx, tx_usecs, rx_usecs);
665
666         /* Reset channel to pick up new moderation value.  Note that
667          * this may change the value of the irq_moderation field
668          * (e.g. to allow for hardware timer granularity).
669          */
670         efx_for_each_channel(channel, efx)
671                 falcon_set_int_moderation(channel);
672
673         return 0;
674 }
675
676 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
677                                       struct ethtool_pauseparam *pause)
678 {
679         struct efx_nic *efx = netdev_priv(net_dev);
680         enum efx_fc_type wanted_fc;
681         bool reset;
682
683         wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
684                      (pause->tx_pause ? EFX_FC_TX : 0) |
685                      (pause->autoneg ? EFX_FC_AUTO : 0));
686
687         if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
688                 EFX_LOG(efx, "Flow control unsupported: tx ON rx OFF\n");
689                 return -EINVAL;
690         }
691
692         if (!(efx->phy_op->mmds & DEV_PRESENT_BIT(MDIO_MMD_AN)) &&
693             (wanted_fc & EFX_FC_AUTO)) {
694                 EFX_LOG(efx, "PHY does not support flow control "
695                         "autonegotiation\n");
696                 return -EINVAL;
697         }
698
699         /* TX flow control may automatically turn itself off if the
700          * link partner (intermittently) stops responding to pause
701          * frames. There isn't any indication that this has happened,
702          * so the best we do is leave it up to the user to spot this
703          * and fix it be cycling transmit flow control on this end. */
704         reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
705         if (EFX_WORKAROUND_11482(efx) && reset) {
706                 if (falcon_rev(efx) >= FALCON_REV_B0) {
707                         /* Recover by resetting the EM block */
708                         if (efx->link_up)
709                                 falcon_drain_tx_fifo(efx);
710                 } else {
711                         /* Schedule a reset to recover */
712                         efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
713                 }
714         }
715
716         /* Try to push the pause parameters */
717         mutex_lock(&efx->mac_lock);
718
719         efx->wanted_fc = wanted_fc;
720         mdio_clause45_set_pause(efx);
721         __efx_reconfigure_port(efx);
722
723         mutex_unlock(&efx->mac_lock);
724
725         return 0;
726 }
727
728 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
729                                        struct ethtool_pauseparam *pause)
730 {
731         struct efx_nic *efx = netdev_priv(net_dev);
732
733         pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
734         pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
735         pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
736 }
737
738
739 struct ethtool_ops efx_ethtool_ops = {
740         .get_settings           = efx_ethtool_get_settings,
741         .set_settings           = efx_ethtool_set_settings,
742         .get_drvinfo            = efx_ethtool_get_drvinfo,
743         .nway_reset             = efx_ethtool_nway_reset,
744         .get_link               = efx_ethtool_get_link,
745         .get_eeprom_len         = efx_ethtool_get_eeprom_len,
746         .get_eeprom             = efx_ethtool_get_eeprom,
747         .set_eeprom             = efx_ethtool_set_eeprom,
748         .get_coalesce           = efx_ethtool_get_coalesce,
749         .set_coalesce           = efx_ethtool_set_coalesce,
750         .get_pauseparam         = efx_ethtool_get_pauseparam,
751         .set_pauseparam         = efx_ethtool_set_pauseparam,
752         .get_rx_csum            = efx_ethtool_get_rx_csum,
753         .set_rx_csum            = efx_ethtool_set_rx_csum,
754         .get_tx_csum            = ethtool_op_get_tx_csum,
755         .set_tx_csum            = ethtool_op_set_tx_csum,
756         .get_sg                 = ethtool_op_get_sg,
757         .set_sg                 = ethtool_op_set_sg,
758         .get_tso                = ethtool_op_get_tso,
759         .set_tso                = ethtool_op_set_tso,
760         .get_flags              = ethtool_op_get_flags,
761         .set_flags              = ethtool_op_set_flags,
762         .get_sset_count         = efx_ethtool_get_sset_count,
763         .self_test              = efx_ethtool_self_test,
764         .get_strings            = efx_ethtool_get_strings,
765         .phys_id                = efx_ethtool_phys_id,
766         .get_ethtool_stats      = efx_ethtool_get_stats,
767 };