NET: am79c961: fix assembler warnings
[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 2006-2010 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 <linux/in.h>
15 #include "net_driver.h"
16 #include "workarounds.h"
17 #include "selftest.h"
18 #include "efx.h"
19 #include "filter.h"
20 #include "nic.h"
21
22 struct ethtool_string {
23         char name[ETH_GSTRING_LEN];
24 };
25
26 struct efx_ethtool_stat {
27         const char *name;
28         enum {
29                 EFX_ETHTOOL_STAT_SOURCE_mac_stats,
30                 EFX_ETHTOOL_STAT_SOURCE_nic,
31                 EFX_ETHTOOL_STAT_SOURCE_channel,
32                 EFX_ETHTOOL_STAT_SOURCE_tx_queue
33         } source;
34         unsigned offset;
35         u64(*get_stat) (void *field); /* Reader function */
36 };
37
38 /* Initialiser for a struct #efx_ethtool_stat with type-checking */
39 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
40                                 get_stat_function) {                    \
41         .name = #stat_name,                                             \
42         .source = EFX_ETHTOOL_STAT_SOURCE_##source_name,                \
43         .offset = ((((field_type *) 0) ==                               \
44                       &((struct efx_##source_name *)0)->field) ?        \
45                     offsetof(struct efx_##source_name, field) :         \
46                     offsetof(struct efx_##source_name, field)),         \
47         .get_stat = get_stat_function,                                  \
48 }
49
50 static u64 efx_get_uint_stat(void *field)
51 {
52         return *(unsigned int *)field;
53 }
54
55 static u64 efx_get_ulong_stat(void *field)
56 {
57         return *(unsigned long *)field;
58 }
59
60 static u64 efx_get_u64_stat(void *field)
61 {
62         return *(u64 *) field;
63 }
64
65 static u64 efx_get_atomic_stat(void *field)
66 {
67         return atomic_read((atomic_t *) field);
68 }
69
70 #define EFX_ETHTOOL_ULONG_MAC_STAT(field)                       \
71         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
72                           unsigned long, efx_get_ulong_stat)
73
74 #define EFX_ETHTOOL_U64_MAC_STAT(field)                         \
75         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
76                           u64, efx_get_u64_stat)
77
78 #define EFX_ETHTOOL_UINT_NIC_STAT(name)                         \
79         EFX_ETHTOOL_STAT(name, nic, n_##name,                   \
80                          unsigned int, efx_get_uint_stat)
81
82 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field)                \
83         EFX_ETHTOOL_STAT(field, nic, field,                     \
84                          atomic_t, efx_get_atomic_stat)
85
86 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field)                    \
87         EFX_ETHTOOL_STAT(field, channel, n_##field,             \
88                          unsigned int, efx_get_uint_stat)
89
90 #define EFX_ETHTOOL_UINT_TXQ_STAT(field)                        \
91         EFX_ETHTOOL_STAT(tx_##field, tx_queue, field,           \
92                          unsigned int, efx_get_uint_stat)
93
94 static struct efx_ethtool_stat efx_ethtool_stats[] = {
95         EFX_ETHTOOL_U64_MAC_STAT(tx_bytes),
96         EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes),
97         EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes),
98         EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets),
99         EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad),
100         EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause),
101         EFX_ETHTOOL_ULONG_MAC_STAT(tx_control),
102         EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast),
103         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast),
104         EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast),
105         EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64),
106         EFX_ETHTOOL_ULONG_MAC_STAT(tx_64),
107         EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127),
108         EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255),
109         EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511),
110         EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023),
111         EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx),
112         EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo),
113         EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo),
114         EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision),
115         EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision),
116         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision),
117         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision),
118         EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred),
119         EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision),
120         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred),
121         EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp),
122         EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error),
123         EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error),
124         EFX_ETHTOOL_UINT_TXQ_STAT(tso_bursts),
125         EFX_ETHTOOL_UINT_TXQ_STAT(tso_long_headers),
126         EFX_ETHTOOL_UINT_TXQ_STAT(tso_packets),
127         EFX_ETHTOOL_UINT_TXQ_STAT(pushes),
128         EFX_ETHTOOL_U64_MAC_STAT(rx_bytes),
129         EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes),
130         EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes),
131         EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets),
132         EFX_ETHTOOL_ULONG_MAC_STAT(rx_good),
133         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad),
134         EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause),
135         EFX_ETHTOOL_ULONG_MAC_STAT(rx_control),
136         EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast),
137         EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast),
138         EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast),
139         EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64),
140         EFX_ETHTOOL_ULONG_MAC_STAT(rx_64),
141         EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127),
142         EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255),
143         EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511),
144         EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023),
145         EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx),
146         EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo),
147         EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo),
148         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64),
149         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx),
150         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo),
151         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo),
152         EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow),
153         EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed),
154         EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier),
155         EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error),
156         EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error),
157         EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error),
158         EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error),
159         EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt),
160         EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
161         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
162         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
163         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
164         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_mcast_mismatch),
165         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
166 };
167
168 /* Number of ethtool statistics */
169 #define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
170
171 #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
172
173 /**************************************************************************
174  *
175  * Ethtool operations
176  *
177  **************************************************************************
178  */
179
180 /* Identify device by flashing LEDs */
181 static int efx_ethtool_phys_id(struct net_device *net_dev,
182                                enum ethtool_phys_id_state state)
183 {
184         struct efx_nic *efx = netdev_priv(net_dev);
185         enum efx_led_mode mode = EFX_LED_DEFAULT;
186
187         switch (state) {
188         case ETHTOOL_ID_ON:
189                 mode = EFX_LED_ON;
190                 break;
191         case ETHTOOL_ID_OFF:
192                 mode = EFX_LED_OFF;
193                 break;
194         case ETHTOOL_ID_INACTIVE:
195                 mode = EFX_LED_DEFAULT;
196                 break;
197         case ETHTOOL_ID_ACTIVE:
198                 return 1;       /* cycle on/off once per second */
199         }
200
201         efx->type->set_id_led(efx, mode);
202         return 0;
203 }
204
205 /* This must be called with rtnl_lock held. */
206 static int efx_ethtool_get_settings(struct net_device *net_dev,
207                                     struct ethtool_cmd *ecmd)
208 {
209         struct efx_nic *efx = netdev_priv(net_dev);
210         struct efx_link_state *link_state = &efx->link_state;
211
212         mutex_lock(&efx->mac_lock);
213         efx->phy_op->get_settings(efx, ecmd);
214         mutex_unlock(&efx->mac_lock);
215
216         /* GMAC does not support 1000Mbps HD */
217         ecmd->supported &= ~SUPPORTED_1000baseT_Half;
218         /* Both MACs support pause frames (bidirectional and respond-only) */
219         ecmd->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
220
221         if (LOOPBACK_INTERNAL(efx)) {
222                 ethtool_cmd_speed_set(ecmd, link_state->speed);
223                 ecmd->duplex = link_state->fd ? DUPLEX_FULL : DUPLEX_HALF;
224         }
225
226         return 0;
227 }
228
229 /* This must be called with rtnl_lock held. */
230 static int efx_ethtool_set_settings(struct net_device *net_dev,
231                                     struct ethtool_cmd *ecmd)
232 {
233         struct efx_nic *efx = netdev_priv(net_dev);
234         int rc;
235
236         /* GMAC does not support 1000Mbps HD */
237         if ((ethtool_cmd_speed(ecmd) == SPEED_1000) &&
238             (ecmd->duplex != DUPLEX_FULL)) {
239                 netif_dbg(efx, drv, efx->net_dev,
240                           "rejecting unsupported 1000Mbps HD setting\n");
241                 return -EINVAL;
242         }
243
244         mutex_lock(&efx->mac_lock);
245         rc = efx->phy_op->set_settings(efx, ecmd);
246         mutex_unlock(&efx->mac_lock);
247         return rc;
248 }
249
250 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
251                                     struct ethtool_drvinfo *info)
252 {
253         struct efx_nic *efx = netdev_priv(net_dev);
254
255         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
256         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
257         if (efx_nic_rev(efx) >= EFX_REV_SIENA_A0)
258                 efx_mcdi_print_fwver(efx, info->fw_version,
259                                      sizeof(info->fw_version));
260         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
261 }
262
263 static int efx_ethtool_get_regs_len(struct net_device *net_dev)
264 {
265         return efx_nic_get_regs_len(netdev_priv(net_dev));
266 }
267
268 static void efx_ethtool_get_regs(struct net_device *net_dev,
269                                  struct ethtool_regs *regs, void *buf)
270 {
271         struct efx_nic *efx = netdev_priv(net_dev);
272
273         regs->version = efx->type->revision;
274         efx_nic_get_regs(efx, buf);
275 }
276
277 static u32 efx_ethtool_get_msglevel(struct net_device *net_dev)
278 {
279         struct efx_nic *efx = netdev_priv(net_dev);
280         return efx->msg_enable;
281 }
282
283 static void efx_ethtool_set_msglevel(struct net_device *net_dev, u32 msg_enable)
284 {
285         struct efx_nic *efx = netdev_priv(net_dev);
286         efx->msg_enable = msg_enable;
287 }
288
289 /**
290  * efx_fill_test - fill in an individual self-test entry
291  * @test_index:         Index of the test
292  * @strings:            Ethtool strings, or %NULL
293  * @data:               Ethtool test results, or %NULL
294  * @test:               Pointer to test result (used only if data != %NULL)
295  * @unit_format:        Unit name format (e.g. "chan\%d")
296  * @unit_id:            Unit id (e.g. 0 for "chan0")
297  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
298  * @test_id:            Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
299  *
300  * Fill in an individual self-test entry.
301  */
302 static void efx_fill_test(unsigned int test_index,
303                           struct ethtool_string *strings, u64 *data,
304                           int *test, const char *unit_format, int unit_id,
305                           const char *test_format, const char *test_id)
306 {
307         struct ethtool_string unit_str, test_str;
308
309         /* Fill data value, if applicable */
310         if (data)
311                 data[test_index] = *test;
312
313         /* Fill string, if applicable */
314         if (strings) {
315                 if (strchr(unit_format, '%'))
316                         snprintf(unit_str.name, sizeof(unit_str.name),
317                                  unit_format, unit_id);
318                 else
319                         strcpy(unit_str.name, unit_format);
320                 snprintf(test_str.name, sizeof(test_str.name),
321                          test_format, test_id);
322                 snprintf(strings[test_index].name,
323                          sizeof(strings[test_index].name),
324                          "%-6s %-24s", unit_str.name, test_str.name);
325         }
326 }
327
328 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
329 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
330 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
331 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
332         "loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
333
334 /**
335  * efx_fill_loopback_test - fill in a block of loopback self-test entries
336  * @efx:                Efx NIC
337  * @lb_tests:           Efx loopback self-test results structure
338  * @mode:               Loopback test mode
339  * @test_index:         Starting index of the test
340  * @strings:            Ethtool strings, or %NULL
341  * @data:               Ethtool test results, or %NULL
342  */
343 static int efx_fill_loopback_test(struct efx_nic *efx,
344                                   struct efx_loopback_self_tests *lb_tests,
345                                   enum efx_loopback_mode mode,
346                                   unsigned int test_index,
347                                   struct ethtool_string *strings, u64 *data)
348 {
349         struct efx_channel *channel = efx_get_channel(efx, 0);
350         struct efx_tx_queue *tx_queue;
351
352         efx_for_each_channel_tx_queue(tx_queue, channel) {
353                 efx_fill_test(test_index++, strings, data,
354                               &lb_tests->tx_sent[tx_queue->queue],
355                               EFX_TX_QUEUE_NAME(tx_queue),
356                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
357                 efx_fill_test(test_index++, strings, data,
358                               &lb_tests->tx_done[tx_queue->queue],
359                               EFX_TX_QUEUE_NAME(tx_queue),
360                               EFX_LOOPBACK_NAME(mode, "tx_done"));
361         }
362         efx_fill_test(test_index++, strings, data,
363                       &lb_tests->rx_good,
364                       "rx", 0,
365                       EFX_LOOPBACK_NAME(mode, "rx_good"));
366         efx_fill_test(test_index++, strings, data,
367                       &lb_tests->rx_bad,
368                       "rx", 0,
369                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
370
371         return test_index;
372 }
373
374 /**
375  * efx_ethtool_fill_self_tests - get self-test details
376  * @efx:                Efx NIC
377  * @tests:              Efx self-test results structure, or %NULL
378  * @strings:            Ethtool strings, or %NULL
379  * @data:               Ethtool test results, or %NULL
380  */
381 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
382                                        struct efx_self_tests *tests,
383                                        struct ethtool_string *strings,
384                                        u64 *data)
385 {
386         struct efx_channel *channel;
387         unsigned int n = 0, i;
388         enum efx_loopback_mode mode;
389
390         efx_fill_test(n++, strings, data, &tests->phy_alive,
391                       "phy", 0, "alive", NULL);
392         efx_fill_test(n++, strings, data, &tests->nvram,
393                       "core", 0, "nvram", NULL);
394         efx_fill_test(n++, strings, data, &tests->interrupt,
395                       "core", 0, "interrupt", NULL);
396
397         /* Event queues */
398         efx_for_each_channel(channel, efx) {
399                 efx_fill_test(n++, strings, data,
400                               &tests->eventq_dma[channel->channel],
401                               EFX_CHANNEL_NAME(channel),
402                               "eventq.dma", NULL);
403                 efx_fill_test(n++, strings, data,
404                               &tests->eventq_int[channel->channel],
405                               EFX_CHANNEL_NAME(channel),
406                               "eventq.int", NULL);
407                 efx_fill_test(n++, strings, data,
408                               &tests->eventq_poll[channel->channel],
409                               EFX_CHANNEL_NAME(channel),
410                               "eventq.poll", NULL);
411         }
412
413         efx_fill_test(n++, strings, data, &tests->registers,
414                       "core", 0, "registers", NULL);
415
416         if (efx->phy_op->run_tests != NULL) {
417                 EFX_BUG_ON_PARANOID(efx->phy_op->test_name == NULL);
418
419                 for (i = 0; true; ++i) {
420                         const char *name;
421
422                         EFX_BUG_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
423                         name = efx->phy_op->test_name(efx, i);
424                         if (name == NULL)
425                                 break;
426
427                         efx_fill_test(n++, strings, data, &tests->phy_ext[i],
428                                       "phy", 0, name, NULL);
429                 }
430         }
431
432         /* Loopback tests */
433         for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
434                 if (!(efx->loopback_modes & (1 << mode)))
435                         continue;
436                 n = efx_fill_loopback_test(efx,
437                                            &tests->loopback[mode], mode, n,
438                                            strings, data);
439         }
440
441         return n;
442 }
443
444 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
445                                       int string_set)
446 {
447         switch (string_set) {
448         case ETH_SS_STATS:
449                 return EFX_ETHTOOL_NUM_STATS;
450         case ETH_SS_TEST:
451                 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
452                                                    NULL, NULL, NULL);
453         default:
454                 return -EINVAL;
455         }
456 }
457
458 static void efx_ethtool_get_strings(struct net_device *net_dev,
459                                     u32 string_set, u8 *strings)
460 {
461         struct efx_nic *efx = netdev_priv(net_dev);
462         struct ethtool_string *ethtool_strings =
463                 (struct ethtool_string *)strings;
464         int i;
465
466         switch (string_set) {
467         case ETH_SS_STATS:
468                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
469                         strncpy(ethtool_strings[i].name,
470                                 efx_ethtool_stats[i].name,
471                                 sizeof(ethtool_strings[i].name));
472                 break;
473         case ETH_SS_TEST:
474                 efx_ethtool_fill_self_tests(efx, NULL,
475                                             ethtool_strings, NULL);
476                 break;
477         default:
478                 /* No other string sets */
479                 break;
480         }
481 }
482
483 static void efx_ethtool_get_stats(struct net_device *net_dev,
484                                   struct ethtool_stats *stats,
485                                   u64 *data)
486 {
487         struct efx_nic *efx = netdev_priv(net_dev);
488         struct efx_mac_stats *mac_stats = &efx->mac_stats;
489         struct efx_ethtool_stat *stat;
490         struct efx_channel *channel;
491         struct efx_tx_queue *tx_queue;
492         struct rtnl_link_stats64 temp;
493         int i;
494
495         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
496
497         /* Update MAC and NIC statistics */
498         dev_get_stats(net_dev, &temp);
499
500         /* Fill detailed statistics buffer */
501         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
502                 stat = &efx_ethtool_stats[i];
503                 switch (stat->source) {
504                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
505                         data[i] = stat->get_stat((void *)mac_stats +
506                                                  stat->offset);
507                         break;
508                 case EFX_ETHTOOL_STAT_SOURCE_nic:
509                         data[i] = stat->get_stat((void *)efx + stat->offset);
510                         break;
511                 case EFX_ETHTOOL_STAT_SOURCE_channel:
512                         data[i] = 0;
513                         efx_for_each_channel(channel, efx)
514                                 data[i] += stat->get_stat((void *)channel +
515                                                           stat->offset);
516                         break;
517                 case EFX_ETHTOOL_STAT_SOURCE_tx_queue:
518                         data[i] = 0;
519                         efx_for_each_channel(channel, efx) {
520                                 efx_for_each_channel_tx_queue(tx_queue, channel)
521                                         data[i] +=
522                                                 stat->get_stat((void *)tx_queue
523                                                                + stat->offset);
524                         }
525                         break;
526                 }
527         }
528 }
529
530 static void efx_ethtool_self_test(struct net_device *net_dev,
531                                   struct ethtool_test *test, u64 *data)
532 {
533         struct efx_nic *efx = netdev_priv(net_dev);
534         struct efx_self_tests *efx_tests;
535         int already_up;
536         int rc = -ENOMEM;
537
538         efx_tests = kzalloc(sizeof(*efx_tests), GFP_KERNEL);
539         if (!efx_tests)
540                 goto fail;
541
542
543         ASSERT_RTNL();
544         if (efx->state != STATE_RUNNING) {
545                 rc = -EIO;
546                 goto fail1;
547         }
548
549         netif_info(efx, drv, efx->net_dev, "starting %sline testing\n",
550                    (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
551
552         /* We need rx buffers and interrupts. */
553         already_up = (efx->net_dev->flags & IFF_UP);
554         if (!already_up) {
555                 rc = dev_open(efx->net_dev);
556                 if (rc) {
557                         netif_err(efx, drv, efx->net_dev,
558                                   "failed opening device.\n");
559                         goto fail1;
560                 }
561         }
562
563         rc = efx_selftest(efx, efx_tests, test->flags);
564
565         if (!already_up)
566                 dev_close(efx->net_dev);
567
568         netif_info(efx, drv, efx->net_dev, "%s %sline self-tests\n",
569                    rc == 0 ? "passed" : "failed",
570                    (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
571
572 fail1:
573         /* Fill ethtool results structures */
574         efx_ethtool_fill_self_tests(efx, efx_tests, NULL, data);
575         kfree(efx_tests);
576 fail:
577         if (rc)
578                 test->flags |= ETH_TEST_FL_FAILED;
579 }
580
581 /* Restart autonegotiation */
582 static int efx_ethtool_nway_reset(struct net_device *net_dev)
583 {
584         struct efx_nic *efx = netdev_priv(net_dev);
585
586         return mdio45_nway_restart(&efx->mdio);
587 }
588
589 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
590                                     struct ethtool_coalesce *coalesce)
591 {
592         struct efx_nic *efx = netdev_priv(net_dev);
593         struct efx_channel *channel;
594
595         memset(coalesce, 0, sizeof(*coalesce));
596
597         /* Find lowest IRQ moderation across all used TX queues */
598         coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
599         efx_for_each_channel(channel, efx) {
600                 if (!efx_channel_has_tx_queues(channel))
601                         continue;
602                 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
603                         if (channel->channel < efx->n_rx_channels)
604                                 coalesce->tx_coalesce_usecs_irq =
605                                         channel->irq_moderation;
606                         else
607                                 coalesce->tx_coalesce_usecs_irq = 0;
608                 }
609         }
610
611         coalesce->use_adaptive_rx_coalesce = efx->irq_rx_adaptive;
612         coalesce->rx_coalesce_usecs_irq = efx->irq_rx_moderation;
613
614         coalesce->tx_coalesce_usecs_irq *= EFX_IRQ_MOD_RESOLUTION;
615         coalesce->rx_coalesce_usecs_irq *= EFX_IRQ_MOD_RESOLUTION;
616
617         return 0;
618 }
619
620 /* Set coalescing parameters
621  * The difficulties occur for shared channels
622  */
623 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
624                                     struct ethtool_coalesce *coalesce)
625 {
626         struct efx_nic *efx = netdev_priv(net_dev);
627         struct efx_channel *channel;
628         unsigned tx_usecs, rx_usecs, adaptive;
629
630         if (coalesce->use_adaptive_tx_coalesce)
631                 return -EOPNOTSUPP;
632
633         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
634                 netif_err(efx, drv, efx->net_dev, "invalid coalescing setting. "
635                           "Only rx/tx_coalesce_usecs_irq are supported\n");
636                 return -EOPNOTSUPP;
637         }
638
639         rx_usecs = coalesce->rx_coalesce_usecs_irq;
640         tx_usecs = coalesce->tx_coalesce_usecs_irq;
641         adaptive = coalesce->use_adaptive_rx_coalesce;
642
643         /* If the channel is shared only allow RX parameters to be set */
644         efx_for_each_channel(channel, efx) {
645                 if (efx_channel_has_rx_queue(channel) &&
646                     efx_channel_has_tx_queues(channel) &&
647                     tx_usecs) {
648                         netif_err(efx, drv, efx->net_dev, "Channel is shared. "
649                                   "Only RX coalescing may be set\n");
650                         return -EOPNOTSUPP;
651                 }
652         }
653
654         efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive);
655         efx_for_each_channel(channel, efx)
656                 efx->type->push_irq_moderation(channel);
657
658         return 0;
659 }
660
661 static void efx_ethtool_get_ringparam(struct net_device *net_dev,
662                                       struct ethtool_ringparam *ring)
663 {
664         struct efx_nic *efx = netdev_priv(net_dev);
665
666         ring->rx_max_pending = EFX_MAX_DMAQ_SIZE;
667         ring->tx_max_pending = EFX_MAX_DMAQ_SIZE;
668         ring->rx_mini_max_pending = 0;
669         ring->rx_jumbo_max_pending = 0;
670         ring->rx_pending = efx->rxq_entries;
671         ring->tx_pending = efx->txq_entries;
672         ring->rx_mini_pending = 0;
673         ring->rx_jumbo_pending = 0;
674 }
675
676 static int efx_ethtool_set_ringparam(struct net_device *net_dev,
677                                      struct ethtool_ringparam *ring)
678 {
679         struct efx_nic *efx = netdev_priv(net_dev);
680
681         if (ring->rx_mini_pending || ring->rx_jumbo_pending ||
682             ring->rx_pending > EFX_MAX_DMAQ_SIZE ||
683             ring->tx_pending > EFX_MAX_DMAQ_SIZE)
684                 return -EINVAL;
685
686         if (ring->rx_pending < EFX_MIN_RING_SIZE ||
687             ring->tx_pending < EFX_MIN_RING_SIZE) {
688                 netif_err(efx, drv, efx->net_dev,
689                           "TX and RX queues cannot be smaller than %ld\n",
690                           EFX_MIN_RING_SIZE);
691                 return -EINVAL;
692         }
693
694         return efx_realloc_channels(efx, ring->rx_pending, ring->tx_pending);
695 }
696
697 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
698                                       struct ethtool_pauseparam *pause)
699 {
700         struct efx_nic *efx = netdev_priv(net_dev);
701         u8 wanted_fc, old_fc;
702         u32 old_adv;
703         bool reset;
704         int rc = 0;
705
706         mutex_lock(&efx->mac_lock);
707
708         wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
709                      (pause->tx_pause ? EFX_FC_TX : 0) |
710                      (pause->autoneg ? EFX_FC_AUTO : 0));
711
712         if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
713                 netif_dbg(efx, drv, efx->net_dev,
714                           "Flow control unsupported: tx ON rx OFF\n");
715                 rc = -EINVAL;
716                 goto out;
717         }
718
719         if ((wanted_fc & EFX_FC_AUTO) && !efx->link_advertising) {
720                 netif_dbg(efx, drv, efx->net_dev,
721                           "Autonegotiation is disabled\n");
722                 rc = -EINVAL;
723                 goto out;
724         }
725
726         /* TX flow control may automatically turn itself off if the
727          * link partner (intermittently) stops responding to pause
728          * frames. There isn't any indication that this has happened,
729          * so the best we do is leave it up to the user to spot this
730          * and fix it be cycling transmit flow control on this end. */
731         reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
732         if (EFX_WORKAROUND_11482(efx) && reset) {
733                 if (efx_nic_rev(efx) == EFX_REV_FALCON_B0) {
734                         /* Recover by resetting the EM block */
735                         falcon_stop_nic_stats(efx);
736                         falcon_drain_tx_fifo(efx);
737                         efx->mac_op->reconfigure(efx);
738                         falcon_start_nic_stats(efx);
739                 } else {
740                         /* Schedule a reset to recover */
741                         efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
742                 }
743         }
744
745         old_adv = efx->link_advertising;
746         old_fc = efx->wanted_fc;
747         efx_link_set_wanted_fc(efx, wanted_fc);
748         if (efx->link_advertising != old_adv ||
749             (efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) {
750                 rc = efx->phy_op->reconfigure(efx);
751                 if (rc) {
752                         netif_err(efx, drv, efx->net_dev,
753                                   "Unable to advertise requested flow "
754                                   "control setting\n");
755                         goto out;
756                 }
757         }
758
759         /* Reconfigure the MAC. The PHY *may* generate a link state change event
760          * if the user just changed the advertised capabilities, but there's no
761          * harm doing this twice */
762         efx->mac_op->reconfigure(efx);
763
764 out:
765         mutex_unlock(&efx->mac_lock);
766
767         return rc;
768 }
769
770 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
771                                        struct ethtool_pauseparam *pause)
772 {
773         struct efx_nic *efx = netdev_priv(net_dev);
774
775         pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
776         pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
777         pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
778 }
779
780
781 static void efx_ethtool_get_wol(struct net_device *net_dev,
782                                 struct ethtool_wolinfo *wol)
783 {
784         struct efx_nic *efx = netdev_priv(net_dev);
785         return efx->type->get_wol(efx, wol);
786 }
787
788
789 static int efx_ethtool_set_wol(struct net_device *net_dev,
790                                struct ethtool_wolinfo *wol)
791 {
792         struct efx_nic *efx = netdev_priv(net_dev);
793         return efx->type->set_wol(efx, wol->wolopts);
794 }
795
796 static int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
797 {
798         struct efx_nic *efx = netdev_priv(net_dev);
799         enum reset_type method;
800         enum {
801                 ETH_RESET_EFX_INVISIBLE = (ETH_RESET_DMA | ETH_RESET_FILTER |
802                                            ETH_RESET_OFFLOAD | ETH_RESET_MAC)
803         };
804
805         /* Check for minimal reset flags */
806         if ((*flags & ETH_RESET_EFX_INVISIBLE) != ETH_RESET_EFX_INVISIBLE)
807                 return -EINVAL;
808         *flags ^= ETH_RESET_EFX_INVISIBLE;
809         method = RESET_TYPE_INVISIBLE;
810
811         if (*flags & ETH_RESET_PHY) {
812                 *flags ^= ETH_RESET_PHY;
813                 method = RESET_TYPE_ALL;
814         }
815
816         if ((*flags & efx->type->reset_world_flags) ==
817             efx->type->reset_world_flags) {
818                 *flags ^= efx->type->reset_world_flags;
819                 method = RESET_TYPE_WORLD;
820         }
821
822         return efx_reset(efx, method);
823 }
824
825 static int
826 efx_ethtool_get_rxnfc(struct net_device *net_dev,
827                       struct ethtool_rxnfc *info, void *rules __always_unused)
828 {
829         struct efx_nic *efx = netdev_priv(net_dev);
830
831         switch (info->cmd) {
832         case ETHTOOL_GRXRINGS:
833                 info->data = efx->n_rx_channels;
834                 return 0;
835
836         case ETHTOOL_GRXFH: {
837                 unsigned min_revision = 0;
838
839                 info->data = 0;
840                 switch (info->flow_type) {
841                 case TCP_V4_FLOW:
842                         info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
843                         /* fall through */
844                 case UDP_V4_FLOW:
845                 case SCTP_V4_FLOW:
846                 case AH_ESP_V4_FLOW:
847                 case IPV4_FLOW:
848                         info->data |= RXH_IP_SRC | RXH_IP_DST;
849                         min_revision = EFX_REV_FALCON_B0;
850                         break;
851                 case TCP_V6_FLOW:
852                         info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
853                         /* fall through */
854                 case UDP_V6_FLOW:
855                 case SCTP_V6_FLOW:
856                 case AH_ESP_V6_FLOW:
857                 case IPV6_FLOW:
858                         info->data |= RXH_IP_SRC | RXH_IP_DST;
859                         min_revision = EFX_REV_SIENA_A0;
860                         break;
861                 default:
862                         break;
863                 }
864                 if (efx_nic_rev(efx) < min_revision)
865                         info->data = 0;
866                 return 0;
867         }
868
869         default:
870                 return -EOPNOTSUPP;
871         }
872 }
873
874 static int efx_ethtool_set_rx_ntuple(struct net_device *net_dev,
875                                      struct ethtool_rx_ntuple *ntuple)
876 {
877         struct efx_nic *efx = netdev_priv(net_dev);
878         struct ethtool_tcpip4_spec *ip_entry = &ntuple->fs.h_u.tcp_ip4_spec;
879         struct ethtool_tcpip4_spec *ip_mask = &ntuple->fs.m_u.tcp_ip4_spec;
880         struct ethhdr *mac_entry = &ntuple->fs.h_u.ether_spec;
881         struct ethhdr *mac_mask = &ntuple->fs.m_u.ether_spec;
882         struct efx_filter_spec filter;
883         int rc;
884
885         /* Range-check action */
886         if (ntuple->fs.action < ETHTOOL_RXNTUPLE_ACTION_CLEAR ||
887             ntuple->fs.action >= (s32)efx->n_rx_channels)
888                 return -EINVAL;
889
890         if (~ntuple->fs.data_mask)
891                 return -EINVAL;
892
893         efx_filter_init_rx(&filter, EFX_FILTER_PRI_MANUAL, 0,
894                            (ntuple->fs.action == ETHTOOL_RXNTUPLE_ACTION_DROP) ?
895                            0xfff : ntuple->fs.action);
896
897         switch (ntuple->fs.flow_type) {
898         case TCP_V4_FLOW:
899         case UDP_V4_FLOW: {
900                 u8 proto = (ntuple->fs.flow_type == TCP_V4_FLOW ?
901                             IPPROTO_TCP : IPPROTO_UDP);
902
903                 /* Must match all of destination, */
904                 if (ip_mask->ip4dst | ip_mask->pdst)
905                         return -EINVAL;
906                 /* all or none of source, */
907                 if ((ip_mask->ip4src | ip_mask->psrc) &&
908                     ((__force u32)~ip_mask->ip4src |
909                      (__force u16)~ip_mask->psrc))
910                         return -EINVAL;
911                 /* and nothing else */
912                 if ((u8)~ip_mask->tos | (u16)~ntuple->fs.vlan_tag_mask)
913                         return -EINVAL;
914
915                 if (!ip_mask->ip4src)
916                         rc = efx_filter_set_ipv4_full(&filter, proto,
917                                                       ip_entry->ip4dst,
918                                                       ip_entry->pdst,
919                                                       ip_entry->ip4src,
920                                                       ip_entry->psrc);
921                 else
922                         rc = efx_filter_set_ipv4_local(&filter, proto,
923                                                        ip_entry->ip4dst,
924                                                        ip_entry->pdst);
925                 if (rc)
926                         return rc;
927                 break;
928         }
929
930         case ETHER_FLOW:
931                 /* Must match all of destination, */
932                 if (!is_zero_ether_addr(mac_mask->h_dest))
933                         return -EINVAL;
934                 /* all or none of VID, */
935                 if (ntuple->fs.vlan_tag_mask != 0xf000 &&
936                     ntuple->fs.vlan_tag_mask != 0xffff)
937                         return -EINVAL;
938                 /* and nothing else */
939                 if (!is_broadcast_ether_addr(mac_mask->h_source) ||
940                     mac_mask->h_proto != htons(0xffff))
941                         return -EINVAL;
942
943                 rc = efx_filter_set_eth_local(
944                         &filter,
945                         (ntuple->fs.vlan_tag_mask == 0xf000) ?
946                         ntuple->fs.vlan_tag : EFX_FILTER_VID_UNSPEC,
947                         mac_entry->h_dest);
948                 if (rc)
949                         return rc;
950                 break;
951
952         default:
953                 return -EINVAL;
954         }
955
956         if (ntuple->fs.action == ETHTOOL_RXNTUPLE_ACTION_CLEAR)
957                 return efx_filter_remove_filter(efx, &filter);
958
959         rc = efx_filter_insert_filter(efx, &filter, true);
960         return rc < 0 ? rc : 0;
961 }
962
963 static int efx_ethtool_get_rxfh_indir(struct net_device *net_dev,
964                                       struct ethtool_rxfh_indir *indir)
965 {
966         struct efx_nic *efx = netdev_priv(net_dev);
967         size_t copy_size =
968                 min_t(size_t, indir->size, ARRAY_SIZE(efx->rx_indir_table));
969
970         if (efx_nic_rev(efx) < EFX_REV_FALCON_B0)
971                 return -EOPNOTSUPP;
972
973         indir->size = ARRAY_SIZE(efx->rx_indir_table);
974         memcpy(indir->ring_index, efx->rx_indir_table,
975                copy_size * sizeof(indir->ring_index[0]));
976         return 0;
977 }
978
979 static int efx_ethtool_set_rxfh_indir(struct net_device *net_dev,
980                                       const struct ethtool_rxfh_indir *indir)
981 {
982         struct efx_nic *efx = netdev_priv(net_dev);
983         size_t i;
984
985         if (efx_nic_rev(efx) < EFX_REV_FALCON_B0)
986                 return -EOPNOTSUPP;
987
988         /* Validate size and indices */
989         if (indir->size != ARRAY_SIZE(efx->rx_indir_table))
990                 return -EINVAL;
991         for (i = 0; i < ARRAY_SIZE(efx->rx_indir_table); i++)
992                 if (indir->ring_index[i] >= efx->n_rx_channels)
993                         return -EINVAL;
994
995         memcpy(efx->rx_indir_table, indir->ring_index,
996                sizeof(efx->rx_indir_table));
997         efx_nic_push_rx_indir_table(efx);
998         return 0;
999 }
1000
1001 const struct ethtool_ops efx_ethtool_ops = {
1002         .get_settings           = efx_ethtool_get_settings,
1003         .set_settings           = efx_ethtool_set_settings,
1004         .get_drvinfo            = efx_ethtool_get_drvinfo,
1005         .get_regs_len           = efx_ethtool_get_regs_len,
1006         .get_regs               = efx_ethtool_get_regs,
1007         .get_msglevel           = efx_ethtool_get_msglevel,
1008         .set_msglevel           = efx_ethtool_set_msglevel,
1009         .nway_reset             = efx_ethtool_nway_reset,
1010         .get_link               = ethtool_op_get_link,
1011         .get_coalesce           = efx_ethtool_get_coalesce,
1012         .set_coalesce           = efx_ethtool_set_coalesce,
1013         .get_ringparam          = efx_ethtool_get_ringparam,
1014         .set_ringparam          = efx_ethtool_set_ringparam,
1015         .get_pauseparam         = efx_ethtool_get_pauseparam,
1016         .set_pauseparam         = efx_ethtool_set_pauseparam,
1017         .get_sset_count         = efx_ethtool_get_sset_count,
1018         .self_test              = efx_ethtool_self_test,
1019         .get_strings            = efx_ethtool_get_strings,
1020         .set_phys_id            = efx_ethtool_phys_id,
1021         .get_ethtool_stats      = efx_ethtool_get_stats,
1022         .get_wol                = efx_ethtool_get_wol,
1023         .set_wol                = efx_ethtool_set_wol,
1024         .reset                  = efx_ethtool_reset,
1025         .get_rxnfc              = efx_ethtool_get_rxnfc,
1026         .set_rx_ntuple          = efx_ethtool_set_rx_ntuple,
1027         .get_rxfh_indir         = efx_ethtool_get_rxfh_indir,
1028         .set_rxfh_indir         = efx_ethtool_set_rxfh_indir,
1029 };