sfc: Use mutex_lock_interruptible() for ethtool EEPROM access
[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         if (EFX_WORKAROUND_13963(efx) && !ecmd->autoneg)
223                 return -EINVAL;
224
225         /* Falcon GMAC does not support 1000Mbps HD */
226         if (ecmd->speed == SPEED_1000 && ecmd->duplex != DUPLEX_FULL) {
227                 EFX_LOG(efx, "rejecting unsupported 1000Mbps HD"
228                         " setting\n");
229                 return -EINVAL;
230         }
231
232         mutex_lock(&efx->mac_lock);
233         rc = efx->phy_op->set_settings(efx, ecmd);
234         mutex_unlock(&efx->mac_lock);
235         if (!rc)
236                 efx_reconfigure_port(efx);
237
238         return rc;
239 }
240
241 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
242                                     struct ethtool_drvinfo *info)
243 {
244         struct efx_nic *efx = netdev_priv(net_dev);
245
246         strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver));
247         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
248         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
249 }
250
251 /**
252  * efx_fill_test - fill in an individual self-test entry
253  * @test_index:         Index of the test
254  * @strings:            Ethtool strings, or %NULL
255  * @data:               Ethtool test results, or %NULL
256  * @test:               Pointer to test result (used only if data != %NULL)
257  * @unit_format:        Unit name format (e.g. "chan\%d")
258  * @unit_id:            Unit id (e.g. 0 for "chan0")
259  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
260  * @test_id:            Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
261  *
262  * Fill in an individual self-test entry.
263  */
264 static void efx_fill_test(unsigned int test_index,
265                           struct ethtool_string *strings, u64 *data,
266                           int *test, const char *unit_format, int unit_id,
267                           const char *test_format, const char *test_id)
268 {
269         struct ethtool_string unit_str, test_str;
270
271         /* Fill data value, if applicable */
272         if (data)
273                 data[test_index] = *test;
274
275         /* Fill string, if applicable */
276         if (strings) {
277                 if (strchr(unit_format, '%'))
278                         snprintf(unit_str.name, sizeof(unit_str.name),
279                                  unit_format, unit_id);
280                 else
281                         strcpy(unit_str.name, unit_format);
282                 snprintf(test_str.name, sizeof(test_str.name),
283                          test_format, test_id);
284                 snprintf(strings[test_index].name,
285                          sizeof(strings[test_index].name),
286                          "%-6s %-24s", unit_str.name, test_str.name);
287         }
288 }
289
290 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
291 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
292 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
293 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
294         "loopback.%s." _counter, LOOPBACK_MODE_NAME(mode)
295
296 /**
297  * efx_fill_loopback_test - fill in a block of loopback self-test entries
298  * @efx:                Efx NIC
299  * @lb_tests:           Efx loopback self-test results structure
300  * @mode:               Loopback test mode
301  * @test_index:         Starting index of the test
302  * @strings:            Ethtool strings, or %NULL
303  * @data:               Ethtool test results, or %NULL
304  */
305 static int efx_fill_loopback_test(struct efx_nic *efx,
306                                   struct efx_loopback_self_tests *lb_tests,
307                                   enum efx_loopback_mode mode,
308                                   unsigned int test_index,
309                                   struct ethtool_string *strings, u64 *data)
310 {
311         struct efx_tx_queue *tx_queue;
312
313         efx_for_each_tx_queue(tx_queue, efx) {
314                 efx_fill_test(test_index++, strings, data,
315                               &lb_tests->tx_sent[tx_queue->queue],
316                               EFX_TX_QUEUE_NAME(tx_queue),
317                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
318                 efx_fill_test(test_index++, strings, data,
319                               &lb_tests->tx_done[tx_queue->queue],
320                               EFX_TX_QUEUE_NAME(tx_queue),
321                               EFX_LOOPBACK_NAME(mode, "tx_done"));
322         }
323         efx_fill_test(test_index++, strings, data,
324                       &lb_tests->rx_good,
325                       "rx", 0,
326                       EFX_LOOPBACK_NAME(mode, "rx_good"));
327         efx_fill_test(test_index++, strings, data,
328                       &lb_tests->rx_bad,
329                       "rx", 0,
330                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
331
332         return test_index;
333 }
334
335 /**
336  * efx_ethtool_fill_self_tests - get self-test details
337  * @efx:                Efx NIC
338  * @tests:              Efx self-test results structure, or %NULL
339  * @strings:            Ethtool strings, or %NULL
340  * @data:               Ethtool test results, or %NULL
341  */
342 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
343                                        struct efx_self_tests *tests,
344                                        struct ethtool_string *strings,
345                                        u64 *data)
346 {
347         struct efx_channel *channel;
348         unsigned int n = 0;
349         enum efx_loopback_mode mode;
350
351         efx_fill_test(n++, strings, data, &tests->mii,
352                       "core", 0, "mii", NULL);
353         efx_fill_test(n++, strings, data, &tests->nvram,
354                       "core", 0, "nvram", NULL);
355         efx_fill_test(n++, strings, data, &tests->interrupt,
356                       "core", 0, "interrupt", NULL);
357
358         /* Event queues */
359         efx_for_each_channel(channel, efx) {
360                 efx_fill_test(n++, strings, data,
361                               &tests->eventq_dma[channel->channel],
362                               EFX_CHANNEL_NAME(channel),
363                               "eventq.dma", NULL);
364                 efx_fill_test(n++, strings, data,
365                               &tests->eventq_int[channel->channel],
366                               EFX_CHANNEL_NAME(channel),
367                               "eventq.int", NULL);
368                 efx_fill_test(n++, strings, data,
369                               &tests->eventq_poll[channel->channel],
370                               EFX_CHANNEL_NAME(channel),
371                               "eventq.poll", NULL);
372         }
373
374         efx_fill_test(n++, strings, data, &tests->registers,
375                       "core", 0, "registers", NULL);
376         efx_fill_test(n++, strings, data, &tests->phy,
377                       "phy", 0, "bist", 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 offline, 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         offline = (test->flags & ETH_TEST_FL_OFFLINE);
511
512         /* Perform online self tests first */
513         rc = efx_online_test(efx, &efx_tests);
514         if (rc)
515                 goto out;
516
517         /* Perform offline tests only if online tests passed */
518         if (offline)
519                 rc = efx_offline_test(efx, &efx_tests,
520                                       efx->loopback_modes);
521
522  out:
523         if (!already_up)
524                 dev_close(efx->net_dev);
525
526         EFX_LOG(efx, "%s all %sline self-tests\n",
527                 rc == 0 ? "passed" : "failed", offline ? "off" : "on");
528
529  fail2:
530  fail1:
531         /* Fill ethtool results structures */
532         efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
533         if (rc)
534                 test->flags |= ETH_TEST_FL_FAILED;
535 }
536
537 /* Restart autonegotiation */
538 static int efx_ethtool_nway_reset(struct net_device *net_dev)
539 {
540         struct efx_nic *efx = netdev_priv(net_dev);
541
542         return mii_nway_restart(&efx->mii);
543 }
544
545 static u32 efx_ethtool_get_link(struct net_device *net_dev)
546 {
547         struct efx_nic *efx = netdev_priv(net_dev);
548
549         return efx->link_up;
550 }
551
552 static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
553 {
554         struct efx_nic *efx = netdev_priv(net_dev);
555         struct efx_spi_device *spi = efx->spi_eeprom;
556
557         if (!spi)
558                 return 0;
559         return min(spi->size, EFX_EEPROM_BOOTCONFIG_END) -
560                 min(spi->size, EFX_EEPROM_BOOTCONFIG_START);
561 }
562
563 static int efx_ethtool_get_eeprom(struct net_device *net_dev,
564                                   struct ethtool_eeprom *eeprom, u8 *buf)
565 {
566         struct efx_nic *efx = netdev_priv(net_dev);
567         struct efx_spi_device *spi = efx->spi_eeprom;
568         size_t len;
569         int rc;
570
571         rc = mutex_lock_interruptible(&efx->spi_lock);
572         if (rc)
573                 return rc;
574         rc = falcon_spi_read(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
575                              eeprom->len, &len, buf);
576         mutex_unlock(&efx->spi_lock);
577
578         eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC;
579         eeprom->len = len;
580         return rc;
581 }
582
583 static int efx_ethtool_set_eeprom(struct net_device *net_dev,
584                                   struct ethtool_eeprom *eeprom, u8 *buf)
585 {
586         struct efx_nic *efx = netdev_priv(net_dev);
587         struct efx_spi_device *spi = efx->spi_eeprom;
588         size_t len;
589         int rc;
590
591         if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC)
592                 return -EINVAL;
593
594         rc = mutex_lock_interruptible(&efx->spi_lock);
595         if (rc)
596                 return rc;
597         rc = falcon_spi_write(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
598                               eeprom->len, &len, buf);
599         mutex_unlock(&efx->spi_lock);
600
601         eeprom->len = len;
602         return rc;
603 }
604
605 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
606                                     struct ethtool_coalesce *coalesce)
607 {
608         struct efx_nic *efx = netdev_priv(net_dev);
609         struct efx_tx_queue *tx_queue;
610         struct efx_rx_queue *rx_queue;
611         struct efx_channel *channel;
612
613         memset(coalesce, 0, sizeof(*coalesce));
614
615         /* Find lowest IRQ moderation across all used TX queues */
616         coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
617         efx_for_each_tx_queue(tx_queue, efx) {
618                 channel = tx_queue->channel;
619                 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
620                         if (channel->used_flags != EFX_USED_BY_RX_TX)
621                                 coalesce->tx_coalesce_usecs_irq =
622                                         channel->irq_moderation;
623                         else
624                                 coalesce->tx_coalesce_usecs_irq = 0;
625                 }
626         }
627
628         /* Find lowest IRQ moderation across all used RX queues */
629         coalesce->rx_coalesce_usecs_irq = ~((u32) 0);
630         efx_for_each_rx_queue(rx_queue, efx) {
631                 channel = rx_queue->channel;
632                 if (channel->irq_moderation < coalesce->rx_coalesce_usecs_irq)
633                         coalesce->rx_coalesce_usecs_irq =
634                                 channel->irq_moderation;
635         }
636
637         return 0;
638 }
639
640 /* Set coalescing parameters
641  * The difficulties occur for shared channels
642  */
643 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
644                                     struct ethtool_coalesce *coalesce)
645 {
646         struct efx_nic *efx = netdev_priv(net_dev);
647         struct efx_channel *channel;
648         struct efx_tx_queue *tx_queue;
649         unsigned tx_usecs, rx_usecs;
650
651         if (coalesce->use_adaptive_rx_coalesce ||
652             coalesce->use_adaptive_tx_coalesce)
653                 return -EOPNOTSUPP;
654
655         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
656                 EFX_ERR(efx, "invalid coalescing setting. "
657                         "Only rx/tx_coalesce_usecs_irq are supported\n");
658                 return -EOPNOTSUPP;
659         }
660
661         rx_usecs = coalesce->rx_coalesce_usecs_irq;
662         tx_usecs = coalesce->tx_coalesce_usecs_irq;
663
664         /* If the channel is shared only allow RX parameters to be set */
665         efx_for_each_tx_queue(tx_queue, efx) {
666                 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
667                     tx_usecs) {
668                         EFX_ERR(efx, "Channel is shared. "
669                                 "Only RX coalescing may be set\n");
670                         return -EOPNOTSUPP;
671                 }
672         }
673
674         efx_init_irq_moderation(efx, tx_usecs, rx_usecs);
675
676         /* Reset channel to pick up new moderation value.  Note that
677          * this may change the value of the irq_moderation field
678          * (e.g. to allow for hardware timer granularity).
679          */
680         efx_for_each_channel(channel, efx)
681                 falcon_set_int_moderation(channel);
682
683         return 0;
684 }
685
686 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
687                                       struct ethtool_pauseparam *pause)
688 {
689         struct efx_nic *efx = netdev_priv(net_dev);
690         enum efx_fc_type wanted_fc;
691         bool reset;
692
693         wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
694                      (pause->tx_pause ? EFX_FC_TX : 0) |
695                      (pause->autoneg ? EFX_FC_AUTO : 0));
696
697         if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
698                 EFX_LOG(efx, "Flow control unsupported: tx ON rx OFF\n");
699                 return -EINVAL;
700         }
701
702         if (!(efx->phy_op->mmds & DEV_PRESENT_BIT(MDIO_MMD_AN)) &&
703             (wanted_fc & EFX_FC_AUTO)) {
704                 EFX_LOG(efx, "PHY does not support flow control "
705                         "autonegotiation\n");
706                 return -EINVAL;
707         }
708
709         /* TX flow control may automatically turn itself off if the
710          * link partner (intermittently) stops responding to pause
711          * frames. There isn't any indication that this has happened,
712          * so the best we do is leave it up to the user to spot this
713          * and fix it be cycling transmit flow control on this end. */
714         reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
715         if (EFX_WORKAROUND_11482(efx) && reset) {
716                 if (falcon_rev(efx) >= FALCON_REV_B0) {
717                         /* Recover by resetting the EM block */
718                         if (efx->link_up)
719                                 falcon_drain_tx_fifo(efx);
720                 } else {
721                         /* Schedule a reset to recover */
722                         efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
723                 }
724         }
725
726         /* Try to push the pause parameters */
727         mutex_lock(&efx->mac_lock);
728
729         efx->wanted_fc = wanted_fc;
730         mdio_clause45_set_pause(efx);
731         __efx_reconfigure_port(efx);
732
733         mutex_unlock(&efx->mac_lock);
734
735         return 0;
736 }
737
738 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
739                                        struct ethtool_pauseparam *pause)
740 {
741         struct efx_nic *efx = netdev_priv(net_dev);
742
743         pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
744         pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
745         pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
746 }
747
748
749 struct ethtool_ops efx_ethtool_ops = {
750         .get_settings           = efx_ethtool_get_settings,
751         .set_settings           = efx_ethtool_set_settings,
752         .get_drvinfo            = efx_ethtool_get_drvinfo,
753         .nway_reset             = efx_ethtool_nway_reset,
754         .get_link               = efx_ethtool_get_link,
755         .get_eeprom_len         = efx_ethtool_get_eeprom_len,
756         .get_eeprom             = efx_ethtool_get_eeprom,
757         .set_eeprom             = efx_ethtool_set_eeprom,
758         .get_coalesce           = efx_ethtool_get_coalesce,
759         .set_coalesce           = efx_ethtool_set_coalesce,
760         .get_pauseparam         = efx_ethtool_get_pauseparam,
761         .set_pauseparam         = efx_ethtool_set_pauseparam,
762         .get_rx_csum            = efx_ethtool_get_rx_csum,
763         .set_rx_csum            = efx_ethtool_set_rx_csum,
764         .get_tx_csum            = ethtool_op_get_tx_csum,
765         .set_tx_csum            = ethtool_op_set_tx_csum,
766         .get_sg                 = ethtool_op_get_sg,
767         .set_sg                 = ethtool_op_set_sg,
768         .get_tso                = ethtool_op_get_tso,
769         .set_tso                = ethtool_op_set_tso,
770         .get_flags              = ethtool_op_get_flags,
771         .set_flags              = ethtool_op_set_flags,
772         .get_sset_count         = efx_ethtool_get_sset_count,
773         .self_test              = efx_ethtool_self_test,
774         .get_strings            = efx_ethtool_get_strings,
775         .phys_id                = efx_ethtool_phys_id,
776         .get_ethtool_stats      = efx_ethtool_get_stats,
777 };