sfc: Rename register I/O header and functions used by both Falcon and Siena
[deliverable/linux.git] / drivers / net / sfc / selftest.c
CommitLineData
3273c2e8
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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"
3273c2e8 27#include "workarounds.h"
8c8661e4 28#include "spi.h"
12d00cad 29#include "io.h"
8c8661e4 30#include "mdio_10g.h"
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31
32/*
33 * Loopback test packet structure
34 *
35 * The self-test should stress every RSS vector, and unfortunately
36 * Falcon only performs RSS on TCP/UDP packets.
37 */
38struct efx_loopback_payload {
39 struct ethhdr header;
40 struct iphdr ip;
41 struct udphdr udp;
42 __be16 iteration;
43 const char msg[64];
44} __attribute__ ((packed));
45
46/* Loopback test source MAC address */
47static const unsigned char payload_source[ETH_ALEN] = {
48 0x00, 0x0f, 0x53, 0x1b, 0x1b, 0x1b,
49};
50
51static const char *payload_msg =
52 "Hello world! This is an Efx loopback test in progress!";
53
54/**
8c8661e4 55 * efx_loopback_state - persistent state during a loopback selftest
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56 * @flush: Drop all packets in efx_loopback_rx_packet
57 * @packet_count: Number of packets being used in this test
58 * @skbs: An array of skbs transmitted
59 * @rx_good: RX good packet count
60 * @rx_bad: RX bad packet count
61 * @payload: Payload used in tests
62 */
8c8661e4 63struct efx_loopback_state {
dc8cfa55 64 bool flush;
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65 int packet_count;
66 struct sk_buff **skbs;
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67
68 /* Checksums are being offloaded */
dc8cfa55 69 bool offload_csum;
60ac1065 70
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71 atomic_t rx_good;
72 atomic_t rx_bad;
73 struct efx_loopback_payload payload;
74};
75
76/**************************************************************************
77 *
8c8661e4 78 * MII, NVRAM and register tests
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79 *
80 **************************************************************************/
81
68e7f45e 82static int efx_test_mdio(struct efx_nic *efx, struct efx_self_tests *tests)
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83{
84 int rc = 0;
68e7f45e 85 int devad = __ffs(efx->mdio.mmds);
8c8661e4 86 u16 physid1, physid2;
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87
88 if (efx->phy_type == PHY_TYPE_NONE)
89 return 0;
90
91 mutex_lock(&efx->mac_lock);
68e7f45e 92 tests->mdio = -1;
8c8661e4 93
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94 physid1 = efx_mdio_read(efx, devad, MDIO_DEVID1);
95 physid2 = efx_mdio_read(efx, devad, MDIO_DEVID2);
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96
97 if ((physid1 == 0x0000) || (physid1 == 0xffff) ||
98 (physid2 == 0x0000) || (physid2 == 0xffff)) {
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99 EFX_ERR(efx, "no MDIO PHY present with ID %d\n",
100 efx->mdio.prtad);
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101 rc = -EINVAL;
102 goto out;
103 }
104
177dfcd8 105 if (EFX_IS10G(efx)) {
68e7f45e 106 rc = efx_mdio_check_mmds(efx, efx->phy_op->mmds, 0);
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107 if (rc)
108 goto out;
109 }
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110
111out:
112 mutex_unlock(&efx->mac_lock);
68e7f45e 113 tests->mdio = rc ? -1 : 1;
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114 return rc;
115}
116
117static int efx_test_nvram(struct efx_nic *efx, struct efx_self_tests *tests)
118{
119 int rc;
120
121 rc = falcon_read_nvram(efx, NULL);
122 tests->nvram = rc ? -1 : 1;
123 return rc;
124}
125
126static int efx_test_chip(struct efx_nic *efx, struct efx_self_tests *tests)
127{
128 int rc;
129
130 /* Not supported on A-series silicon */
131 if (falcon_rev(efx) < FALCON_REV_B0)
132 return 0;
133
134 rc = falcon_test_registers(efx);
135 tests->registers = rc ? -1 : 1;
136 return rc;
137}
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138
139/**************************************************************************
140 *
141 * Interrupt and event queue testing
142 *
143 **************************************************************************/
144
145/* Test generation and receipt of interrupts */
146static int efx_test_interrupts(struct efx_nic *efx,
147 struct efx_self_tests *tests)
148{
149 struct efx_channel *channel;
150
151 EFX_LOG(efx, "testing interrupts\n");
152 tests->interrupt = -1;
153
154 /* Reset interrupt flag */
155 efx->last_irq_cpu = -1;
156 smp_wmb();
157
158 /* ACK each interrupting event queue. Receiving an interrupt due to
159 * traffic before a test event is raised is considered a pass */
64ee3120 160 efx_for_each_channel(channel, efx) {
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161 if (channel->work_pending)
162 efx_process_channel_now(channel);
163 if (efx->last_irq_cpu >= 0)
164 goto success;
165 }
166
167 falcon_generate_interrupt(efx);
168
169 /* Wait for arrival of test interrupt. */
170 EFX_LOG(efx, "waiting for test interrupt\n");
171 schedule_timeout_uninterruptible(HZ / 10);
172 if (efx->last_irq_cpu >= 0)
173 goto success;
174
175 EFX_ERR(efx, "timed out waiting for interrupt\n");
176 return -ETIMEDOUT;
177
178 success:
179 EFX_LOG(efx, "test interrupt (mode %d) seen on CPU%d\n",
180 efx->interrupt_mode, efx->last_irq_cpu);
181 tests->interrupt = 1;
182 return 0;
183}
184
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185/* Test generation and receipt of interrupting events */
186static int efx_test_eventq_irq(struct efx_channel *channel,
187 struct efx_self_tests *tests)
188{
189 unsigned int magic, count;
190
191 /* Channel specific code, limited to 20 bits */
192 magic = (0x00010150 + channel->channel);
193 EFX_LOG(channel->efx, "channel %d testing event queue with code %x\n",
194 channel->channel, magic);
195
196 tests->eventq_dma[channel->channel] = -1;
197 tests->eventq_int[channel->channel] = -1;
198 tests->eventq_poll[channel->channel] = -1;
199
200 /* Reset flag and zero magic word */
201 channel->efx->last_irq_cpu = -1;
202 channel->eventq_magic = 0;
203 smp_wmb();
204
205 falcon_generate_test_event(channel, magic);
206
207 /* Wait for arrival of interrupt */
208 count = 0;
209 do {
210 schedule_timeout_uninterruptible(HZ / 100);
211
212 if (channel->work_pending)
213 efx_process_channel_now(channel);
214
215 if (channel->eventq_magic == magic)
216 goto eventq_ok;
217 } while (++count < 2);
218
219 EFX_ERR(channel->efx, "channel %d timed out waiting for event queue\n",
220 channel->channel);
221
222 /* See if interrupt arrived */
223 if (channel->efx->last_irq_cpu >= 0) {
224 EFX_ERR(channel->efx, "channel %d saw interrupt on CPU%d "
225 "during event queue test\n", channel->channel,
226 raw_smp_processor_id());
227 tests->eventq_int[channel->channel] = 1;
228 }
229
230 /* Check to see if event was received even if interrupt wasn't */
231 efx_process_channel_now(channel);
232 if (channel->eventq_magic == magic) {
233 EFX_ERR(channel->efx, "channel %d event was generated, but "
234 "failed to trigger an interrupt\n", channel->channel);
235 tests->eventq_dma[channel->channel] = 1;
236 }
237
238 return -ETIMEDOUT;
239 eventq_ok:
240 EFX_LOG(channel->efx, "channel %d event queue passed\n",
241 channel->channel);
242 tests->eventq_dma[channel->channel] = 1;
243 tests->eventq_int[channel->channel] = 1;
244 tests->eventq_poll[channel->channel] = 1;
245 return 0;
246}
247
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248static int efx_test_phy(struct efx_nic *efx, struct efx_self_tests *tests,
249 unsigned flags)
3273c2e8 250{
8c8661e4 251 int rc;
3273c2e8 252
1796721a 253 if (!efx->phy_op->run_tests)
3273c2e8 254 return 0;
3273c2e8 255
1796721a
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256 EFX_BUG_ON_PARANOID(efx->phy_op->num_tests == 0 ||
257 efx->phy_op->num_tests > EFX_MAX_PHY_TESTS);
258
8c8661e4 259 mutex_lock(&efx->mac_lock);
1796721a 260 rc = efx->phy_op->run_tests(efx, tests->phy, flags);
8c8661e4 261 mutex_unlock(&efx->mac_lock);
8c8661e4 262 return rc;
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263}
264
265/**************************************************************************
266 *
267 * Loopback testing
268 * NB Only one loopback test can be executing concurrently.
269 *
270 **************************************************************************/
271
272/* Loopback test RX callback
273 * This is called for each received packet during loopback testing.
274 */
275void efx_loopback_rx_packet(struct efx_nic *efx,
276 const char *buf_ptr, int pkt_len)
277{
8c8661e4 278 struct efx_loopback_state *state = efx->loopback_selftest;
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279 struct efx_loopback_payload *received;
280 struct efx_loopback_payload *payload;
281
282 BUG_ON(!buf_ptr);
283
284 /* If we are just flushing, then drop the packet */
285 if ((state == NULL) || state->flush)
286 return;
287
288 payload = &state->payload;
8c8661e4 289
d3208b5e 290 received = (struct efx_loopback_payload *) buf_ptr;
3273c2e8 291 received->ip.saddr = payload->ip.saddr;
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292 if (state->offload_csum)
293 received->ip.check = payload->ip.check;
294
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295 /* Check that header exists */
296 if (pkt_len < sizeof(received->header)) {
297 EFX_ERR(efx, "saw runt RX packet (length %d) in %s loopback "
298 "test\n", pkt_len, LOOPBACK_MODE(efx));
299 goto err;
300 }
301
302 /* Check that the ethernet header exists */
303 if (memcmp(&received->header, &payload->header, ETH_HLEN) != 0) {
304 EFX_ERR(efx, "saw non-loopback RX packet in %s loopback test\n",
305 LOOPBACK_MODE(efx));
306 goto err;
307 }
308
309 /* Check packet length */
310 if (pkt_len != sizeof(*payload)) {
311 EFX_ERR(efx, "saw incorrect RX packet length %d (wanted %d) in "
312 "%s loopback test\n", pkt_len, (int)sizeof(*payload),
313 LOOPBACK_MODE(efx));
314 goto err;
315 }
316
317 /* Check that IP header matches */
318 if (memcmp(&received->ip, &payload->ip, sizeof(payload->ip)) != 0) {
319 EFX_ERR(efx, "saw corrupted IP header in %s loopback test\n",
320 LOOPBACK_MODE(efx));
321 goto err;
322 }
323
324 /* Check that msg and padding matches */
325 if (memcmp(&received->msg, &payload->msg, sizeof(received->msg)) != 0) {
326 EFX_ERR(efx, "saw corrupted RX packet in %s loopback test\n",
327 LOOPBACK_MODE(efx));
328 goto err;
329 }
330
331 /* Check that iteration matches */
332 if (received->iteration != payload->iteration) {
333 EFX_ERR(efx, "saw RX packet from iteration %d (wanted %d) in "
334 "%s loopback test\n", ntohs(received->iteration),
335 ntohs(payload->iteration), LOOPBACK_MODE(efx));
336 goto err;
337 }
338
339 /* Increase correct RX count */
340 EFX_TRACE(efx, "got loopback RX in %s loopback test\n",
341 LOOPBACK_MODE(efx));
342
343 atomic_inc(&state->rx_good);
344 return;
345
346 err:
347#ifdef EFX_ENABLE_DEBUG
348 if (atomic_read(&state->rx_bad) == 0) {
349 EFX_ERR(efx, "received packet:\n");
350 print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 0x10, 1,
351 buf_ptr, pkt_len, 0);
352 EFX_ERR(efx, "expected packet:\n");
353 print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 0x10, 1,
354 &state->payload, sizeof(state->payload), 0);
355 }
356#endif
357 atomic_inc(&state->rx_bad);
358}
359
360/* Initialise an efx_selftest_state for a new iteration */
361static void efx_iterate_state(struct efx_nic *efx)
362{
8c8661e4 363 struct efx_loopback_state *state = efx->loopback_selftest;
3273c2e8
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364 struct net_device *net_dev = efx->net_dev;
365 struct efx_loopback_payload *payload = &state->payload;
366
367 /* Initialise the layerII header */
368 memcpy(&payload->header.h_dest, net_dev->dev_addr, ETH_ALEN);
369 memcpy(&payload->header.h_source, &payload_source, ETH_ALEN);
370 payload->header.h_proto = htons(ETH_P_IP);
371
372 /* saddr set later and used as incrementing count */
373 payload->ip.daddr = htonl(INADDR_LOOPBACK);
374 payload->ip.ihl = 5;
375 payload->ip.check = htons(0xdead);
376 payload->ip.tot_len = htons(sizeof(*payload) - sizeof(struct ethhdr));
377 payload->ip.version = IPVERSION;
378 payload->ip.protocol = IPPROTO_UDP;
379
380 /* Initialise udp header */
381 payload->udp.source = 0;
382 payload->udp.len = htons(sizeof(*payload) - sizeof(struct ethhdr) -
383 sizeof(struct iphdr));
384 payload->udp.check = 0; /* checksum ignored */
385
386 /* Fill out payload */
387 payload->iteration = htons(ntohs(payload->iteration) + 1);
388 memcpy(&payload->msg, payload_msg, sizeof(payload_msg));
389
390 /* Fill out remaining state members */
391 atomic_set(&state->rx_good, 0);
392 atomic_set(&state->rx_bad, 0);
393 smp_wmb();
394}
395
b9aafb0e 396static int efx_begin_loopback(struct efx_tx_queue *tx_queue)
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397{
398 struct efx_nic *efx = tx_queue->efx;
8c8661e4 399 struct efx_loopback_state *state = efx->loopback_selftest;
3273c2e8
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400 struct efx_loopback_payload *payload;
401 struct sk_buff *skb;
61357325
SH
402 int i;
403 netdev_tx_t rc;
3273c2e8
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404
405 /* Transmit N copies of buffer */
406 for (i = 0; i < state->packet_count; i++) {
8c8661e4 407 /* Allocate an skb, holding an extra reference for
3273c2e8
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408 * transmit completion counting */
409 skb = alloc_skb(sizeof(state->payload), GFP_KERNEL);
410 if (!skb)
411 return -ENOMEM;
412 state->skbs[i] = skb;
413 skb_get(skb);
414
415 /* Copy the payload in, incrementing the source address to
416 * exercise the rss vectors */
417 payload = ((struct efx_loopback_payload *)
418 skb_put(skb, sizeof(state->payload)));
419 memcpy(payload, &state->payload, sizeof(state->payload));
420 payload->ip.saddr = htonl(INADDR_LOOPBACK | (i << 2));
421
422 /* Ensure everything we've written is visible to the
423 * interrupt handler. */
424 smp_wmb();
425
55668611 426 if (efx_dev_registered(efx))
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427 netif_tx_lock_bh(efx->net_dev);
428 rc = efx_xmit(efx, tx_queue, skb);
55668611 429 if (efx_dev_registered(efx))
3273c2e8
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430 netif_tx_unlock_bh(efx->net_dev);
431
432 if (rc != NETDEV_TX_OK) {
433 EFX_ERR(efx, "TX queue %d could not transmit packet %d "
434 "of %d in %s loopback test\n", tx_queue->queue,
435 i + 1, state->packet_count, LOOPBACK_MODE(efx));
436
437 /* Defer cleaning up the other skbs for the caller */
438 kfree_skb(skb);
439 return -EPIPE;
440 }
28679751 441 efx->net_dev->trans_start = jiffies;
3273c2e8
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442 }
443
444 return 0;
445}
446
b9aafb0e
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447static int efx_poll_loopback(struct efx_nic *efx)
448{
8c8661e4 449 struct efx_loopback_state *state = efx->loopback_selftest;
b9aafb0e
BH
450 struct efx_channel *channel;
451
452 /* NAPI polling is not enabled, so process channels
453 * synchronously */
64ee3120 454 efx_for_each_channel(channel, efx) {
b9aafb0e
BH
455 if (channel->work_pending)
456 efx_process_channel_now(channel);
457 }
458 return atomic_read(&state->rx_good) == state->packet_count;
459}
460
461static int efx_end_loopback(struct efx_tx_queue *tx_queue,
462 struct efx_loopback_self_tests *lb_tests)
3273c2e8
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463{
464 struct efx_nic *efx = tx_queue->efx;
8c8661e4 465 struct efx_loopback_state *state = efx->loopback_selftest;
3273c2e8
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466 struct sk_buff *skb;
467 int tx_done = 0, rx_good, rx_bad;
468 int i, rc = 0;
469
55668611 470 if (efx_dev_registered(efx))
3273c2e8
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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
55668611 482 if (efx_dev_registered(efx))
3273c2e8
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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
519static int
520efx_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;
8c8661e4 524 struct efx_loopback_state *state = efx->loopback_selftest;
b9aafb0e 525 int i, begin_rc, end_rc;
3273c2e8 526
8c8661e4 527 for (i = 0; i < 3; i++) {
3273c2e8
BH
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);
9b7bfc4c
BH
533 if (!state->skbs)
534 return -ENOMEM;
dc8cfa55 535 state->flush = false;
3273c2e8
BH
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);
b9aafb0e
BH
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);
3273c2e8
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550 }
551
b9aafb0e 552 end_rc = efx_end_loopback(tx_queue, lb_tests);
3273c2e8
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553 kfree(state->skbs);
554
b9aafb0e 555 if (begin_rc || end_rc) {
3273c2e8
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556 /* Wait a while to ensure there are no packets
557 * floating around after a failure. */
558 schedule_timeout_uninterruptible(HZ / 10);
b9aafb0e 559 return begin_rc ? begin_rc : end_rc;
3273c2e8
BH
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
a0c2c190 567 return 0;
3273c2e8
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568}
569
a5692e49 570static int efx_test_loopbacks(struct efx_nic *efx, struct efx_self_tests *tests,
3273c2e8
BH
571 unsigned int loopback_modes)
572{
8c8661e4
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573 enum efx_loopback_mode mode;
574 struct efx_loopback_state *state;
3273c2e8 575 struct efx_tx_queue *tx_queue;
dc8cfa55 576 bool link_up;
8c8661e4 577 int count, rc = 0;
3273c2e8 578
8c8661e4
BH
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;
3273c2e8
BH
588
589 /* Test all supported loopback modes */
8c8661e4 590 for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
3273c2e8
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591 if (!(loopback_modes & (1 << mode)))
592 continue;
593
594 /* Move the port into the specified loopback mode. */
dc8cfa55 595 state->flush = true;
3273c2e8
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596 efx->loopback_mode = mode;
597 efx_reconfigure_port(efx);
598
766ca0fa
BH
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 */
3273c2e8
BH
602 count = 0;
603 do {
604 struct efx_channel *channel = &efx->channel[0];
605
766ca0fa 606 efx->phy_op->poll(efx);
3273c2e8
BH
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
177dfcd8
BH
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 */
3273c2e8 617 link_up = efx->link_up;
177dfcd8
BH
618 if (link_up && EFX_IS10G(efx) &&
619 !falcon_xaui_link_ok(efx))
8c8661e4 620 link_up = false;
3273c2e8
BH
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) {
60ac1065
BH
638 state->offload_csum = (tx_queue->queue ==
639 EFX_TX_QUEUE_OFFLOAD_CSUM);
f8ea0b67
BH
640 rc = efx_test_loopback(tx_queue,
641 &tests->loopback[mode]);
3273c2e8
BH
642 if (rc)
643 goto out;
644 }
645 }
646
647 out:
8c8661e4 648 /* Remove the flush. The caller will remove the loopback setting */
dc8cfa55 649 state->flush = true;
8c8661e4
BH
650 efx->loopback_selftest = NULL;
651 wmb();
652 kfree(state);
3273c2e8
BH
653
654 return rc;
655}
656
657/**************************************************************************
658 *
2ef3068e 659 * Entry point
3273c2e8
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660 *
661 *************************************************************************/
662
2ef3068e
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663int efx_selftest(struct efx_nic *efx, struct efx_self_tests *tests,
664 unsigned flags)
3273c2e8 665{
2ef3068e
BH
666 enum efx_loopback_mode loopback_mode = efx->loopback_mode;
667 int phy_mode = efx->phy_mode;
4b988280 668 enum reset_type reset_method = RESET_TYPE_INVISIBLE;
2ef3068e 669 struct ethtool_cmd ecmd;
3273c2e8 670 struct efx_channel *channel;
2ef3068e
BH
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. */
8c8661e4 675
68e7f45e 676 rc = efx_test_mdio(efx, tests);
2ef3068e
BH
677 if (rc && !rc_test)
678 rc_test = rc;
8c8661e4
BH
679
680 rc = efx_test_nvram(efx, tests);
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BH
681 if (rc && !rc_test)
682 rc_test = rc;
3273c2e8 683
f8ea0b67 684 rc = efx_test_interrupts(efx, tests);
2ef3068e
BH
685 if (rc && !rc_test)
686 rc_test = rc;
8c8661e4 687
3273c2e8 688 efx_for_each_channel(channel, efx) {
64ee3120 689 rc = efx_test_eventq_irq(channel, tests);
2ef3068e
BH
690 if (rc && !rc_test)
691 rc_test = rc;
3273c2e8 692 }
8c8661e4 693
2ef3068e
BH
694 if (rc_test)
695 return rc_test;
3273c2e8 696
2ef3068e 697 if (!(flags & ETH_TEST_FL_OFFLINE))
1796721a 698 return efx_test_phy(efx, tests, flags);
2ef3068e
BH
699
700 /* Offline (i.e. disruptive) testing
701 * This checks MAC and PHY loopback on the specified port. */
8c8661e4
BH
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;
6f158d5f
BH
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
8c8661e4
BH
718 __efx_reconfigure_port(efx);
719 mutex_unlock(&efx->mac_lock);
720
721 /* free up all consumers of SRAM (including all the queues) */
4b988280 722 efx_reset_down(efx, reset_method, &ecmd);
8c8661e4
BH
723
724 rc = efx_test_chip(efx, tests);
2ef3068e
BH
725 if (rc && !rc_test)
726 rc_test = rc;
8c8661e4
BH
727
728 /* reset the chip to recover from the register test */
4b988280 729 rc_reset = falcon_reset_hw(efx, reset_method);
8c8661e4 730
a5692e49
BH
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;
8c8661e4 734 efx->loopback_mode = LOOPBACK_NONE;
3273c2e8 735
4b988280 736 rc = efx_reset_up(efx, reset_method, &ecmd, rc_reset == 0);
2ef3068e
BH
737 if (rc && !rc_reset)
738 rc_reset = rc;
739
740 if (rc_reset) {
8c8661e4
BH
741 EFX_ERR(efx, "Unable to recover from chip test\n");
742 efx_schedule_reset(efx, RESET_TYPE_DISABLE);
2ef3068e 743 return rc_reset;
8c8661e4 744 }
3273c2e8 745
1796721a 746 rc = efx_test_phy(efx, tests, flags);
2ef3068e
BH
747 if (rc && !rc_test)
748 rc_test = rc;
3273c2e8 749
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BH
750 rc = efx_test_loopbacks(efx, tests, efx->loopback_modes);
751 if (rc && !rc_test)
752 rc_test = rc;
3273c2e8 753
8c8661e4
BH
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
2ef3068e 760 return rc_test;
3273c2e8
BH
761}
762
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