projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blob
? search:


0a598084c5133a64cdb4dd4bb342b2fedc976b66
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / sfc / selftest.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/module.h>
13 #include <linux/delay.h>
14 #include <linux/kernel_stat.h>
15 #include <linux/pci.h>
16 #include <linux/ethtool.h>
17 #include <linux/ip.h>
18 #include <linux/in.h>
19 #include <linux/udp.h>
20 #include <linux/rtnetlink.h>
21 #include <asm/io.h>
22 #include "net_driver.h"
23 #include "ethtool.h"
24 #include "efx.h"
25 #include "falcon.h"
26 #include "selftest.h"
27 #include "boards.h"
28 #include "workarounds.h"
29 #include "spi.h"
30 #include "falcon_io.h"
31 #include "mdio_10g.h"
32
33 /*
34 * Loopback test packet structure
35 *
36 * The self-test should stress every RSS vector, and unfortunately
37 * Falcon only performs RSS on TCP/UDP packets.
38 */
39 struct efx_loopback_payload {
40 struct ethhdr header;
41 struct iphdr ip;
42 struct udphdr udp;
43 __be16 iteration;
44 const char msg[64];
45 } __attribute__ ((packed));
46
47 /* Loopback test source MAC address */
48 static const unsigned char payload_source[ETH_ALEN] = {
49 0x00, 0x0f, 0x53, 0x1b, 0x1b, 0x1b,
50 };
51
52 static const char *payload_msg =
53 "Hello world! This is an Efx loopback test in progress!";
54
55 /**
56 * efx_loopback_state - persistent state during a loopback selftest
57 * @flush: Drop all packets in efx_loopback_rx_packet
58 * @packet_count: Number of packets being used in this test
59 * @skbs: An array of skbs transmitted
60 * @rx_good: RX good packet count
61 * @rx_bad: RX bad packet count
62 * @payload: Payload used in tests
63 */
64 struct efx_loopback_state {
65 bool flush;
66 int packet_count;
67 struct sk_buff **skbs;
68
69 /* Checksums are being offloaded */
70 bool offload_csum;
71
72 atomic_t rx_good;
73 atomic_t rx_bad;
74 struct efx_loopback_payload payload;
75 };
76
77 /**************************************************************************
78 *
79 * MII, NVRAM and register tests
80 *
81 **************************************************************************/
82
83 static int efx_test_mii(struct efx_nic *efx, struct efx_self_tests *tests)
84 {
85 int rc = 0;
86 u16 physid1, physid2;
87 struct mii_if_info *mii = &efx->mii;
88 struct net_device *net_dev = efx->net_dev;
89
90 if (efx->phy_type == PHY_TYPE_NONE)
91 return 0;
92
93 mutex_lock(&efx->mac_lock);
94 tests->mii = -1;
95
96 physid1 = mii->mdio_read(net_dev, mii->phy_id, MII_PHYSID1);
97 physid2 = mii->mdio_read(net_dev, mii->phy_id, MII_PHYSID2);
98
99 if ((physid1 == 0x0000) || (physid1 == 0xffff) ||
100 (physid2 == 0x0000) || (physid2 == 0xffff)) {
101 EFX_ERR(efx, "no MII PHY present with ID %d\n",
102 mii->phy_id);
103 rc = -EINVAL;
104 goto out;
105 }
106
107 if (EFX_IS10G(efx)) {
108 rc = mdio_clause45_check_mmds(efx, efx->phy_op->mmds, 0);
109 if (rc)
110 goto out;
111 }
112
113 out:
114 mutex_unlock(&efx->mac_lock);
115 tests->mii = rc ? -1 : 1;
116 return rc;
117 }
118
119 static int efx_test_nvram(struct efx_nic *efx, struct efx_self_tests *tests)
120 {
121 int rc;
122
123 rc = falcon_read_nvram(efx, NULL);
124 tests->nvram = rc ? -1 : 1;
125 return rc;
126 }
127
128 static int efx_test_chip(struct efx_nic *efx, struct efx_self_tests *tests)
129 {
130 int rc;
131
132 /* Not supported on A-series silicon */
133 if (falcon_rev(efx) < FALCON_REV_B0)
134 return 0;
135
136 rc = falcon_test_registers(efx);
137 tests->registers = rc ? -1 : 1;
138 return rc;
139 }
140
141 /**************************************************************************
142 *
143 * Interrupt and event queue testing
144 *
145 **************************************************************************/
146
147 /* Test generation and receipt of interrupts */
148 static int efx_test_interrupts(struct efx_nic *efx,
149 struct efx_self_tests *tests)
150 {
151 struct efx_channel *channel;
152
153 EFX_LOG(efx, "testing interrupts\n");
154 tests->interrupt = -1;
155
156 /* Reset interrupt flag */
157 efx->last_irq_cpu = -1;
158 smp_wmb();
159
160 /* ACK each interrupting event queue. Receiving an interrupt due to
161 * traffic before a test event is raised is considered a pass */
162 efx_for_each_channel(channel, efx) {
163 if (channel->work_pending)
164 efx_process_channel_now(channel);
165 if (efx->last_irq_cpu >= 0)
166 goto success;
167 }
168
169 falcon_generate_interrupt(efx);
170
171 /* Wait for arrival of test interrupt. */
172 EFX_LOG(efx, "waiting for test interrupt\n");
173 schedule_timeout_uninterruptible(HZ / 10);
174 if (efx->last_irq_cpu >= 0)
175 goto success;
176
177 EFX_ERR(efx, "timed out waiting for interrupt\n");
178 return -ETIMEDOUT;
179
180 success:
181 EFX_LOG(efx, "test interrupt (mode %d) seen on CPU%d\n",
182 efx->interrupt_mode, efx->last_irq_cpu);
183 tests->interrupt = 1;
184 return 0;
185 }
186
187 /* Test generation and receipt of interrupting events */
188 static int efx_test_eventq_irq(struct efx_channel *channel,
189 struct efx_self_tests *tests)
190 {
191 unsigned int magic, count;
192
193 /* Channel specific code, limited to 20 bits */
194 magic = (0x00010150 + channel->channel);
195 EFX_LOG(channel->efx, "channel %d testing event queue with code %x\n",
196 channel->channel, magic);
197
198 tests->eventq_dma[channel->channel] = -1;
199 tests->eventq_int[channel->channel] = -1;
200 tests->eventq_poll[channel->channel] = -1;
201
202 /* Reset flag and zero magic word */
203 channel->efx->last_irq_cpu = -1;
204 channel->eventq_magic = 0;
205 smp_wmb();
206
207 falcon_generate_test_event(channel, magic);
208
209 /* Wait for arrival of interrupt */
210 count = 0;
211 do {
212 schedule_timeout_uninterruptible(HZ / 100);
213
214 if (channel->work_pending)
215 efx_process_channel_now(channel);
216
217 if (channel->eventq_magic == magic)
218 goto eventq_ok;
219 } while (++count < 2);
220
221 EFX_ERR(channel->efx, "channel %d timed out waiting for event queue\n",
222 channel->channel);
223
224 /* See if interrupt arrived */
225 if (channel->efx->last_irq_cpu >= 0) {
226 EFX_ERR(channel->efx, "channel %d saw interrupt on CPU%d "
227 "during event queue test\n", channel->channel,
228 raw_smp_processor_id());
229 tests->eventq_int[channel->channel] = 1;
230 }
231
232 /* Check to see if event was received even if interrupt wasn't */
233 efx_process_channel_now(channel);
234 if (channel->eventq_magic == magic) {
235 EFX_ERR(channel->efx, "channel %d event was generated, but "
236 "failed to trigger an interrupt\n", channel->channel);
237 tests->eventq_dma[channel->channel] = 1;
238 }
239
240 return -ETIMEDOUT;
241 eventq_ok:
242 EFX_LOG(channel->efx, "channel %d event queue passed\n",
243 channel->channel);
244 tests->eventq_dma[channel->channel] = 1;
245 tests->eventq_int[channel->channel] = 1;
246 tests->eventq_poll[channel->channel] = 1;
247 return 0;
248 }
249
250 static int efx_test_phy(struct efx_nic *efx, struct efx_self_tests *tests,
251 unsigned flags)
252 {
253 int rc;
254
255 if (!efx->phy_op->run_tests)
256 return 0;
257
258 EFX_BUG_ON_PARANOID(efx->phy_op->num_tests == 0 ||
259 efx->phy_op->num_tests > EFX_MAX_PHY_TESTS);
260
261 mutex_lock(&efx->mac_lock);
262 rc = efx->phy_op->run_tests(efx, tests->phy, flags);
263 mutex_unlock(&efx->mac_lock);
264 return rc;
265 }
266
267 /**************************************************************************
268 *
269 * Loopback testing
270 * NB Only one loopback test can be executing concurrently.
271 *
272 **************************************************************************/
273
274 /* Loopback test RX callback
275 * This is called for each received packet during loopback testing.
276 */
277 void efx_loopback_rx_packet(struct efx_nic *efx,
278 const char *buf_ptr, int pkt_len)
279 {
280 struct efx_loopback_state *state = efx->loopback_selftest;
281 struct efx_loopback_payload *received;
282 struct efx_loopback_payload *payload;
283
284 BUG_ON(!buf_ptr);
285
286 /* If we are just flushing, then drop the packet */
287 if ((state == NULL) || state->flush)
288 return;
289
290 payload = &state->payload;
291
292 received = (struct efx_loopback_payload *) buf_ptr;
293 received->ip.saddr = payload->ip.saddr;
294 if (state->offload_csum)
295 received->ip.check = payload->ip.check;
296
297 /* Check that header exists */
298 if (pkt_len < sizeof(received->header)) {
299 EFX_ERR(efx, "saw runt RX packet (length %d) in %s loopback "
300 "test\n", pkt_len, LOOPBACK_MODE(efx));
301 goto err;
302 }
303
304 /* Check that the ethernet header exists */
305 if (memcmp(&received->header, &payload->header, ETH_HLEN) != 0) {
306 EFX_ERR(efx, "saw non-loopback RX packet in %s loopback test\n",
307 LOOPBACK_MODE(efx));
308 goto err;
309 }
310
311 /* Check packet length */
312 if (pkt_len != sizeof(*payload)) {
313 EFX_ERR(efx, "saw incorrect RX packet length %d (wanted %d) in "
314 "%s loopback test\n", pkt_len, (int)sizeof(*payload),
315 LOOPBACK_MODE(efx));
316 goto err;
317 }
318
319 /* Check that IP header matches */
320 if (memcmp(&received->ip, &payload->ip, sizeof(payload->ip)) != 0) {
321 EFX_ERR(efx, "saw corrupted IP header in %s loopback test\n",
322 LOOPBACK_MODE(efx));
323 goto err;
324 }
325
326 /* Check that msg and padding matches */
327 if (memcmp(&received->msg, &payload->msg, sizeof(received->msg)) != 0) {
328 EFX_ERR(efx, "saw corrupted RX packet in %s loopback test\n",
329 LOOPBACK_MODE(efx));
330 goto err;
331 }
332
333 /* Check that iteration matches */
334 if (received->iteration != payload->iteration) {
335 EFX_ERR(efx, "saw RX packet from iteration %d (wanted %d) in "
336 "%s loopback test\n", ntohs(received->iteration),
337 ntohs(payload->iteration), LOOPBACK_MODE(efx));
338 goto err;
339 }
340
341 /* Increase correct RX count */
342 EFX_TRACE(efx, "got loopback RX in %s loopback test\n",
343 LOOPBACK_MODE(efx));
344
345 atomic_inc(&state->rx_good);
346 return;
347
348 err:
349 #ifdef EFX_ENABLE_DEBUG
350 if (atomic_read(&state->rx_bad) == 0) {
351 EFX_ERR(efx, "received packet:\n");
352 print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 0x10, 1,
353 buf_ptr, pkt_len, 0);
354 EFX_ERR(efx, "expected packet:\n");
355 print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 0x10, 1,
356 &state->payload, sizeof(state->payload), 0);
357 }
358 #endif
359 atomic_inc(&state->rx_bad);
360 }
361
362 /* Initialise an efx_selftest_state for a new iteration */
363 static void efx_iterate_state(struct efx_nic *efx)
364 {
365 struct efx_loopback_state *state = efx->loopback_selftest;
366 struct net_device *net_dev = efx->net_dev;
367 struct efx_loopback_payload *payload = &state->payload;
368
369 /* Initialise the layerII header */
370 memcpy(&payload->header.h_dest, net_dev->dev_addr, ETH_ALEN);
371 memcpy(&payload->header.h_source, &payload_source, ETH_ALEN);
372 payload->header.h_proto = htons(ETH_P_IP);
373
374 /* saddr set later and used as incrementing count */
375 payload->ip.daddr = htonl(INADDR_LOOPBACK);
376 payload->ip.ihl = 5;
377 payload->ip.check = htons(0xdead);
378 payload->ip.tot_len = htons(sizeof(*payload) - sizeof(struct ethhdr));
379 payload->ip.version = IPVERSION;
380 payload->ip.protocol = IPPROTO_UDP;
381
382 /* Initialise udp header */
383 payload->udp.source = 0;
384 payload->udp.len = htons(sizeof(*payload) - sizeof(struct ethhdr) -
385 sizeof(struct iphdr));
386 payload->udp.check = 0; /* checksum ignored */
387
388 /* Fill out payload */
389 payload->iteration = htons(ntohs(payload->iteration) + 1);
390 memcpy(&payload->msg, payload_msg, sizeof(payload_msg));
391
392 /* Fill out remaining state members */
393 atomic_set(&state->rx_good, 0);
394 atomic_set(&state->rx_bad, 0);
395 smp_wmb();
396 }
397
398 static int efx_begin_loopback(struct efx_tx_queue *tx_queue)
399 {
400 struct efx_nic *efx = tx_queue->efx;
401 struct efx_loopback_state *state = efx->loopback_selftest;
402 struct efx_loopback_payload *payload;
403 struct sk_buff *skb;
404 int i, rc;
405
406 /* Transmit N copies of buffer */
407 for (i = 0; i < state->packet_count; i++) {
408 /* Allocate an skb, holding an extra reference for
409 * transmit completion counting */
410 skb = alloc_skb(sizeof(state->payload), GFP_KERNEL);
411 if (!skb)
412 return -ENOMEM;
413 state->skbs[i] = skb;
414 skb_get(skb);
415
416 /* Copy the payload in, incrementing the source address to
417 * exercise the rss vectors */
418 payload = ((struct efx_loopback_payload *)
419 skb_put(skb, sizeof(state->payload)));
420 memcpy(payload, &state->payload, sizeof(state->payload));
421 payload->ip.saddr = htonl(INADDR_LOOPBACK | (i << 2));
422
423 /* Ensure everything we've written is visible to the
424 * interrupt handler. */
425 smp_wmb();
426
427 if (efx_dev_registered(efx))
428 netif_tx_lock_bh(efx->net_dev);
429 rc = efx_xmit(efx, tx_queue, skb);
430 if (efx_dev_registered(efx))
431 netif_tx_unlock_bh(efx->net_dev);
432
433 if (rc != NETDEV_TX_OK) {
434 EFX_ERR(efx, "TX queue %d could not transmit packet %d "
435 "of %d in %s loopback test\n", tx_queue->queue,
436 i + 1, state->packet_count, LOOPBACK_MODE(efx));
437
438 /* Defer cleaning up the other skbs for the caller */
439 kfree_skb(skb);
440 return -EPIPE;
441 }
442 }
443
444 return 0;
445 }
446
447 static int efx_poll_loopback(struct efx_nic *efx)
448 {
449 struct efx_loopback_state *state = efx->loopback_selftest;
450 struct efx_channel *channel;
451
452 /* NAPI polling is not enabled, so process channels
453 * synchronously */
454 efx_for_each_channel(channel, efx) {
455 if (channel->work_pending)
456 efx_process_channel_now(channel);
457 }
458 return atomic_read(&state->rx_good) == state->packet_count;
459 }
460
461 static int efx_end_loopback(struct efx_tx_queue *tx_queue,
462 struct efx_loopback_self_tests *lb_tests)
463 {
464 struct efx_nic *efx = tx_queue->efx;
465 struct efx_loopback_state *state = efx->loopback_selftest;
466 struct sk_buff *skb;
467 int tx_done = 0, rx_good, rx_bad;
468 int i, rc = 0;
469
470 if (efx_dev_registered(efx))
471 netif_tx_lock_bh(efx->net_dev);
472
473 /* Count the number of tx completions, and decrement the refcnt. Any
474 * skbs not already completed will be free'd when the queue is flushed */
475 for (i=0; i < state->packet_count; i++) {
476 skb = state->skbs[i];
477 if (skb && !skb_shared(skb))
478 ++tx_done;
479 dev_kfree_skb_any(skb);
480 }
481
482 if (efx_dev_registered(efx))
483 netif_tx_unlock_bh(efx->net_dev);
484
485 /* Check TX completion and received packet counts */
486 rx_good = atomic_read(&state->rx_good);
487 rx_bad = atomic_read(&state->rx_bad);
488 if (tx_done != state->packet_count) {
489 /* Don't free the skbs; they will be picked up on TX
490 * overflow or channel teardown.
491 */
492 EFX_ERR(efx, "TX queue %d saw only %d out of an expected %d "
493 "TX completion events in %s loopback test\n",
494 tx_queue->queue, tx_done, state->packet_count,
495 LOOPBACK_MODE(efx));
496 rc = -ETIMEDOUT;
497 /* Allow to fall through so we see the RX errors as well */
498 }
499
500 /* We may always be up to a flush away from our desired packet total */
501 if (rx_good != state->packet_count) {
502 EFX_LOG(efx, "TX queue %d saw only %d out of an expected %d "
503 "received packets in %s loopback test\n",
504 tx_queue->queue, rx_good, state->packet_count,
505 LOOPBACK_MODE(efx));
506 rc = -ETIMEDOUT;
507 /* Fall through */
508 }
509
510 /* Update loopback test structure */
511 lb_tests->tx_sent[tx_queue->queue] += state->packet_count;
512 lb_tests->tx_done[tx_queue->queue] += tx_done;
513 lb_tests->rx_good += rx_good;
514 lb_tests->rx_bad += rx_bad;
515
516 return rc;
517 }
518
519 static int
520 efx_test_loopback(struct efx_tx_queue *tx_queue,
521 struct efx_loopback_self_tests *lb_tests)
522 {
523 struct efx_nic *efx = tx_queue->efx;
524 struct efx_loopback_state *state = efx->loopback_selftest;
525 int i, begin_rc, end_rc;
526
527 for (i = 0; i < 3; i++) {
528 /* Determine how many packets to send */
529 state->packet_count = (efx->type->txd_ring_mask + 1) / 3;
530 state->packet_count = min(1 << (i << 2), state->packet_count);
531 state->skbs = kzalloc(sizeof(state->skbs[0]) *
532 state->packet_count, GFP_KERNEL);
533 if (!state->skbs)
534 return -ENOMEM;
535 state->flush = false;
536
537 EFX_LOG(efx, "TX queue %d testing %s loopback with %d "
538 "packets\n", tx_queue->queue, LOOPBACK_MODE(efx),
539 state->packet_count);
540
541 efx_iterate_state(efx);
542 begin_rc = efx_begin_loopback(tx_queue);
543
544 /* This will normally complete very quickly, but be
545 * prepared to wait up to 100 ms. */
546 msleep(1);
547 if (!efx_poll_loopback(efx)) {
548 msleep(100);
549 efx_poll_loopback(efx);
550 }
551
552 end_rc = efx_end_loopback(tx_queue, lb_tests);
553 kfree(state->skbs);
554
555 if (begin_rc || end_rc) {
556 /* Wait a while to ensure there are no packets
557 * floating around after a failure. */
558 schedule_timeout_uninterruptible(HZ / 10);
559 return begin_rc ? begin_rc : end_rc;
560 }
561 }
562
563 EFX_LOG(efx, "TX queue %d passed %s loopback test with a burst length "
564 "of %d packets\n", tx_queue->queue, LOOPBACK_MODE(efx),
565 state->packet_count);
566
567 return 0;
568 }
569
570 static int efx_test_loopbacks(struct efx_nic *efx, struct efx_self_tests *tests,
571 unsigned int loopback_modes)
572 {
573 enum efx_loopback_mode mode;
574 struct efx_loopback_state *state;
575 struct efx_tx_queue *tx_queue;
576 bool link_up;
577 int count, rc = 0;
578
579 /* Set the port loopback_selftest member. From this point on
580 * all received packets will be dropped. Mark the state as
581 * "flushing" so all inflight packets are dropped */
582 state = kzalloc(sizeof(*state), GFP_KERNEL);
583 if (state == NULL)
584 return -ENOMEM;
585 BUG_ON(efx->loopback_selftest);
586 state->flush = true;
587 efx->loopback_selftest = state;
588
589 /* Test all supported loopback modes */
590 for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
591 if (!(loopback_modes & (1 << mode)))
592 continue;
593
594 /* Move the port into the specified loopback mode. */
595 state->flush = true;
596 efx->loopback_mode = mode;
597 efx_reconfigure_port(efx);
598
599 /* Wait for the PHY to signal the link is up. Interrupts
600 * are enabled for PHY's using LASI, otherwise we poll()
601 * quickly */
602 count = 0;
603 do {
604 struct efx_channel *channel = &efx->channel[0];
605
606 efx->phy_op->poll(efx);
607 schedule_timeout_uninterruptible(HZ / 10);
608 if (channel->work_pending)
609 efx_process_channel_now(channel);
610 /* Wait for PHY events to be processed */
611 flush_workqueue(efx->workqueue);
612 rmb();
613
614 /* We need both the phy and xaui links to be ok.
615 * rather than relying on the falcon_xmac irq/poll
616 * regime, just poll xaui directly */
617 link_up = efx->link_up;
618 if (link_up && EFX_IS10G(efx) &&
619 !falcon_xaui_link_ok(efx))
620 link_up = false;
621
622 } while ((++count < 20) && !link_up);
623
624 /* The link should now be up. If it isn't, there is no point
625 * in attempting a loopback test */
626 if (!link_up) {
627 EFX_ERR(efx, "loopback %s never came up\n",
628 LOOPBACK_MODE(efx));
629 rc = -EIO;
630 goto out;
631 }
632
633 EFX_LOG(efx, "link came up in %s loopback in %d iterations\n",
634 LOOPBACK_MODE(efx), count);
635
636 /* Test every TX queue */
637 efx_for_each_tx_queue(tx_queue, efx) {
638 state->offload_csum = (tx_queue->queue ==
639 EFX_TX_QUEUE_OFFLOAD_CSUM);
640 rc = efx_test_loopback(tx_queue,
641 &tests->loopback[mode]);
642 if (rc)
643 goto out;
644 }
645 }
646
647 out:
648 /* Remove the flush. The caller will remove the loopback setting */
649 state->flush = true;
650 efx->loopback_selftest = NULL;
651 wmb();
652 kfree(state);
653
654 return rc;
655 }
656
657 /**************************************************************************
658 *
659 * Entry point
660 *
661 *************************************************************************/
662
663 int efx_selftest(struct efx_nic *efx, struct efx_self_tests *tests,
664 unsigned flags)
665 {
666 enum efx_loopback_mode loopback_mode = efx->loopback_mode;
667 int phy_mode = efx->phy_mode;
668 enum reset_type reset_method = RESET_TYPE_INVISIBLE;
669 struct ethtool_cmd ecmd;
670 struct efx_channel *channel;
671 int rc_test = 0, rc_reset = 0, rc;
672
673 /* Online (i.e. non-disruptive) testing
674 * This checks interrupt generation, event delivery and PHY presence. */
675
676 rc = efx_test_mii(efx, tests);
677 if (rc && !rc_test)
678 rc_test = rc;
679
680 rc = efx_test_nvram(efx, tests);
681 if (rc && !rc_test)
682 rc_test = rc;
683
684 rc = efx_test_interrupts(efx, tests);
685 if (rc && !rc_test)
686 rc_test = rc;
687
688 efx_for_each_channel(channel, efx) {
689 rc = efx_test_eventq_irq(channel, tests);
690 if (rc && !rc_test)
691 rc_test = rc;
692 }
693
694 if (rc_test)
695 return rc_test;
696
697 if (!(flags & ETH_TEST_FL_OFFLINE))
698 return efx_test_phy(efx, tests, flags);
699
700 /* Offline (i.e. disruptive) testing
701 * This checks MAC and PHY loopback on the specified port. */
702
703 /* force the carrier state off so the kernel doesn't transmit during
704 * the loopback test, and the watchdog timeout doesn't fire. Also put
705 * falcon into loopback for the register test.
706 */
707 mutex_lock(&efx->mac_lock);
708 efx->port_inhibited = true;
709 if (efx->loopback_modes) {
710 /* We need the 312 clock from the PHY to test the XMAC
711 * registers, so move into XGMII loopback if available */
712 if (efx->loopback_modes & (1 << LOOPBACK_XGMII))
713 efx->loopback_mode = LOOPBACK_XGMII;
714 else
715 efx->loopback_mode = __ffs(efx->loopback_modes);
716 }
717
718 __efx_reconfigure_port(efx);
719 mutex_unlock(&efx->mac_lock);
720
721 /* free up all consumers of SRAM (including all the queues) */
722 efx_reset_down(efx, reset_method, &ecmd);
723
724 rc = efx_test_chip(efx, tests);
725 if (rc && !rc_test)
726 rc_test = rc;
727
728 /* reset the chip to recover from the register test */
729 rc_reset = falcon_reset_hw(efx, reset_method);
730
731 /* Ensure that the phy is powered and out of loopback
732 * for the bist and loopback tests */
733 efx->phy_mode &= ~PHY_MODE_LOW_POWER;
734 efx->loopback_mode = LOOPBACK_NONE;
735
736 rc = efx_reset_up(efx, reset_method, &ecmd, rc_reset == 0);
737 if (rc && !rc_reset)
738 rc_reset = rc;
739
740 if (rc_reset) {
741 EFX_ERR(efx, "Unable to recover from chip test\n");
742 efx_schedule_reset(efx, RESET_TYPE_DISABLE);
743 return rc_reset;
744 }
745
746 rc = efx_test_phy(efx, tests, flags);
747 if (rc && !rc_test)
748 rc_test = rc;
749
750 rc = efx_test_loopbacks(efx, tests, efx->loopback_modes);
751 if (rc && !rc_test)
752 rc_test = rc;
753
754 /* restore the PHY to the previous state */
755 efx->loopback_mode = loopback_mode;
756 efx->phy_mode = phy_mode;
757 efx->port_inhibited = false;
758 efx_ethtool_set_settings(efx->net_dev, &ecmd);
759
760 return rc_test;
761 }
762
kernel source for telekom puls (alcatel/mediatek)