diff options
Diffstat (limited to 'drivers/net/ethernet/sfc/falcon/selftest.c')
| -rw-r--r-- | drivers/net/ethernet/sfc/falcon/selftest.c | 808 |
1 files changed, 808 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/falcon/selftest.c b/drivers/net/ethernet/sfc/falcon/selftest.c new file mode 100644 index 000000000000..92bc34c91547 --- /dev/null +++ b/drivers/net/ethernet/sfc/falcon/selftest.c @@ -0,0 +1,808 @@ +/**************************************************************************** + * Driver for Solarflare network controllers and boards + * Copyright 2005-2006 Fen Systems Ltd. + * Copyright 2006-2012 Solarflare Communications Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation, incorporated herein by reference. + */ + +#include <linux/netdevice.h> +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/kernel_stat.h> +#include <linux/pci.h> +#include <linux/ethtool.h> +#include <linux/ip.h> +#include <linux/in.h> +#include <linux/udp.h> +#include <linux/rtnetlink.h> +#include <linux/slab.h> +#include "net_driver.h" +#include "efx.h" +#include "nic.h" +#include "selftest.h" +#include "workarounds.h" + +/* IRQ latency can be enormous because: + * - All IRQs may be disabled on a CPU for a *long* time by e.g. a + * slow serial console or an old IDE driver doing error recovery + * - The PREEMPT_RT patches mostly deal with this, but also allow a + * tasklet or normal task to be given higher priority than our IRQ + * threads + * Try to avoid blaming the hardware for this. + */ +#define IRQ_TIMEOUT HZ + +/* + * Loopback test packet structure + * + * The self-test should stress every RSS vector, and unfortunately + * Falcon only performs RSS on TCP/UDP packets. + */ +struct ef4_loopback_payload { + struct ethhdr header; + struct iphdr ip; + struct udphdr udp; + __be16 iteration; + char msg[64]; +} __packed; + +/* Loopback test source MAC address */ +static const u8 payload_source[ETH_ALEN] __aligned(2) = { + 0x00, 0x0f, 0x53, 0x1b, 0x1b, 0x1b, +}; + +static const char payload_msg[] = + "Hello world! This is an Efx loopback test in progress!"; + +/* Interrupt mode names */ +static const unsigned int ef4_interrupt_mode_max = EF4_INT_MODE_MAX; +static const char *const ef4_interrupt_mode_names[] = { + [EF4_INT_MODE_MSIX] = "MSI-X", + [EF4_INT_MODE_MSI] = "MSI", + [EF4_INT_MODE_LEGACY] = "legacy", +}; +#define INT_MODE(efx) \ + STRING_TABLE_LOOKUP(efx->interrupt_mode, ef4_interrupt_mode) + +/** + * ef4_loopback_state - persistent state during a loopback selftest + * @flush: Drop all packets in ef4_loopback_rx_packet + * @packet_count: Number of packets being used in this test + * @skbs: An array of skbs transmitted + * @offload_csum: Checksums are being offloaded + * @rx_good: RX good packet count + * @rx_bad: RX bad packet count + * @payload: Payload used in tests + */ +struct ef4_loopback_state { + bool flush; + int packet_count; + struct sk_buff **skbs; + bool offload_csum; + atomic_t rx_good; + atomic_t rx_bad; + struct ef4_loopback_payload payload; +}; + +/* How long to wait for all the packets to arrive (in ms) */ +#define LOOPBACK_TIMEOUT_MS 1000 + +/************************************************************************** + * + * MII, NVRAM and register tests + * + **************************************************************************/ + +static int ef4_test_phy_alive(struct ef4_nic *efx, struct ef4_self_tests *tests) +{ + int rc = 0; + + if (efx->phy_op->test_alive) { + rc = efx->phy_op->test_alive(efx); + tests->phy_alive = rc ? -1 : 1; + } + + return rc; +} + +static int ef4_test_nvram(struct ef4_nic *efx, struct ef4_self_tests *tests) +{ + int rc = 0; + + if (efx->type->test_nvram) { + rc = efx->type->test_nvram(efx); + if (rc == -EPERM) + rc = 0; + else + tests->nvram = rc ? -1 : 1; + } + + return rc; +} + +/************************************************************************** + * + * Interrupt and event queue testing + * + **************************************************************************/ + +/* Test generation and receipt of interrupts */ +static int ef4_test_interrupts(struct ef4_nic *efx, + struct ef4_self_tests *tests) +{ + unsigned long timeout, wait; + int cpu; + int rc; + + netif_dbg(efx, drv, efx->net_dev, "testing interrupts\n"); + tests->interrupt = -1; + + rc = ef4_nic_irq_test_start(efx); + if (rc == -ENOTSUPP) { + netif_dbg(efx, drv, efx->net_dev, + "direct interrupt testing not supported\n"); + tests->interrupt = 0; + return 0; + } + + timeout = jiffies + IRQ_TIMEOUT; + wait = 1; + + /* Wait for arrival of test interrupt. */ + netif_dbg(efx, drv, efx->net_dev, "waiting for test interrupt\n"); + do { + schedule_timeout_uninterruptible(wait); + cpu = ef4_nic_irq_test_irq_cpu(efx); + if (cpu >= 0) + goto success; + wait *= 2; + } while (time_before(jiffies, timeout)); + + netif_err(efx, drv, efx->net_dev, "timed out waiting for interrupt\n"); + return -ETIMEDOUT; + + success: + netif_dbg(efx, drv, efx->net_dev, "%s test interrupt seen on CPU%d\n", + INT_MODE(efx), cpu); + tests->interrupt = 1; + return 0; +} + +/* Test generation and receipt of interrupting events */ +static int ef4_test_eventq_irq(struct ef4_nic *efx, + struct ef4_self_tests *tests) +{ + struct ef4_channel *channel; + unsigned int read_ptr[EF4_MAX_CHANNELS]; + unsigned long napi_ran = 0, dma_pend = 0, int_pend = 0; + unsigned long timeout, wait; + + BUILD_BUG_ON(EF4_MAX_CHANNELS > BITS_PER_LONG); + + ef4_for_each_channel(channel, efx) { + read_ptr[channel->channel] = channel->eventq_read_ptr; + set_bit(channel->channel, &dma_pend); + set_bit(channel->channel, &int_pend); + ef4_nic_event_test_start(channel); + } + + timeout = jiffies + IRQ_TIMEOUT; + wait = 1; + + /* Wait for arrival of interrupts. NAPI processing may or may + * not complete in time, but we can cope in any case. + */ + do { + schedule_timeout_uninterruptible(wait); + + ef4_for_each_channel(channel, efx) { + ef4_stop_eventq(channel); + if (channel->eventq_read_ptr != + read_ptr[channel->channel]) { + set_bit(channel->channel, &napi_ran); + clear_bit(channel->channel, &dma_pend); + clear_bit(channel->channel, &int_pend); + } else { + if (ef4_nic_event_present(channel)) + clear_bit(channel->channel, &dma_pend); + if (ef4_nic_event_test_irq_cpu(channel) >= 0) + clear_bit(channel->channel, &int_pend); + } + ef4_start_eventq(channel); + } + + wait *= 2; + } while ((dma_pend || int_pend) && time_before(jiffies, timeout)); + + ef4_for_each_channel(channel, efx) { + bool dma_seen = !test_bit(channel->channel, &dma_pend); + bool int_seen = !test_bit(channel->channel, &int_pend); + + tests->eventq_dma[channel->channel] = dma_seen ? 1 : -1; + tests->eventq_int[channel->channel] = int_seen ? 1 : -1; + + if (dma_seen && int_seen) { + netif_dbg(efx, drv, efx->net_dev, + "channel %d event queue passed (with%s NAPI)\n", + channel->channel, + test_bit(channel->channel, &napi_ran) ? + "" : "out"); + } else { + /* Report failure and whether either interrupt or DMA + * worked + */ + netif_err(efx, drv, efx->net_dev, + "channel %d timed out waiting for event queue\n", + channel->channel); + if (int_seen) + netif_err(efx, drv, efx->net_dev, + "channel %d saw interrupt " + "during event queue test\n", + channel->channel); + if (dma_seen) + netif_err(efx, drv, efx->net_dev, + "channel %d event was generated, but " + "failed to trigger an interrupt\n", + channel->channel); + } + } + + return (dma_pend || int_pend) ? -ETIMEDOUT : 0; +} + +static int ef4_test_phy(struct ef4_nic *efx, struct ef4_self_tests *tests, + unsigned flags) +{ + int rc; + + if (!efx->phy_op->run_tests) + return 0; + + mutex_lock(&efx->mac_lock); + rc = efx->phy_op->run_tests(efx, tests->phy_ext, flags); + mutex_unlock(&efx->mac_lock); + if (rc == -EPERM) + rc = 0; + else + netif_info(efx, drv, efx->net_dev, + "%s phy selftest\n", rc ? "Failed" : "Passed"); + + return rc; +} + +/************************************************************************** + * + * Loopback testing + * NB Only one loopback test can be executing concurrently. + * + **************************************************************************/ + +/* Loopback test RX callback + * This is called for each received packet during loopback testing. + */ +void ef4_loopback_rx_packet(struct ef4_nic *efx, + const char *buf_ptr, int pkt_len) +{ + struct ef4_loopback_state *state = efx->loopback_selftest; + struct ef4_loopback_payload *received; + struct ef4_loopback_payload *payload; + + BUG_ON(!buf_ptr); + + /* If we are just flushing, then drop the packet */ + if ((state == NULL) || state->flush) + return; + + payload = &state->payload; + + received = (struct ef4_loopback_payload *) buf_ptr; + received->ip.saddr = payload->ip.saddr; + if (state->offload_csum) + received->ip.check = payload->ip.check; + + /* Check that header exists */ + if (pkt_len < sizeof(received->header)) { + netif_err(efx, drv, efx->net_dev, + "saw runt RX packet (length %d) in %s loopback " + "test\n", pkt_len, LOOPBACK_MODE(efx)); + goto err; + } + + /* Check that the ethernet header exists */ + if (memcmp(&received->header, &payload->header, ETH_HLEN) != 0) { + netif_err(efx, drv, efx->net_dev, + "saw non-loopback RX packet in %s loopback test\n", + LOOPBACK_MODE(efx)); + goto err; + } + + /* Check packet length */ + if (pkt_len != sizeof(*payload)) { + netif_err(efx, drv, efx->net_dev, + "saw incorrect RX packet length %d (wanted %d) in " + "%s loopback test\n", pkt_len, (int)sizeof(*payload), + LOOPBACK_MODE(efx)); + goto err; + } + + /* Check that IP header matches */ + if (memcmp(&received->ip, &payload->ip, sizeof(payload->ip)) != 0) { + netif_err(efx, drv, efx->net_dev, + "saw corrupted IP header in %s loopback test\n", + LOOPBACK_MODE(efx)); + goto err; + } + + /* Check that msg and padding matches */ + if (memcmp(&received->msg, &payload->msg, sizeof(received->msg)) != 0) { + netif_err(efx, drv, efx->net_dev, + "saw corrupted RX packet in %s loopback test\n", + LOOPBACK_MODE(efx)); + goto err; + } + + /* Check that iteration matches */ + if (received->iteration != payload->iteration) { + netif_err(efx, drv, efx->net_dev, + "saw RX packet from iteration %d (wanted %d) in " + "%s loopback test\n", ntohs(received->iteration), + ntohs(payload->iteration), LOOPBACK_MODE(efx)); + goto err; + } + + /* Increase correct RX count */ + netif_vdbg(efx, drv, efx->net_dev, + "got loopback RX in %s loopback test\n", LOOPBACK_MODE(efx)); + + atomic_inc(&state->rx_good); + return; + + err: +#ifdef DEBUG + if (atomic_read(&state->rx_bad) == 0) { + netif_err(efx, drv, efx->net_dev, "received packet:\n"); + print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 0x10, 1, + buf_ptr, pkt_len, 0); + netif_err(efx, drv, efx->net_dev, "expected packet:\n"); + print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 0x10, 1, + &state->payload, sizeof(state->payload), 0); + } +#endif + atomic_inc(&state->rx_bad); +} + +/* Initialise an ef4_selftest_state for a new iteration */ +static void ef4_iterate_state(struct ef4_nic *efx) +{ + struct ef4_loopback_state *state = efx->loopback_selftest; + struct net_device *net_dev = efx->net_dev; + struct ef4_loopback_payload *payload = &state->payload; + + /* Initialise the layerII header */ + ether_addr_copy((u8 *)&payload->header.h_dest, net_dev->dev_addr); + ether_addr_copy((u8 *)&payload->header.h_source, payload_source); + payload->header.h_proto = htons(ETH_P_IP); + + /* saddr set later and used as incrementing count */ + payload->ip.daddr = htonl(INADDR_LOOPBACK); + payload->ip.ihl = 5; + payload->ip.check = (__force __sum16) htons(0xdead); + payload->ip.tot_len = htons(sizeof(*payload) - sizeof(struct ethhdr)); + payload->ip.version = IPVERSION; + payload->ip.protocol = IPPROTO_UDP; + + /* Initialise udp header */ + payload->udp.source = 0; + payload->udp.len = htons(sizeof(*payload) - sizeof(struct ethhdr) - + sizeof(struct iphdr)); + payload->udp.check = 0; /* checksum ignored */ + + /* Fill out payload */ + payload->iteration = htons(ntohs(payload->iteration) + 1); + memcpy(&payload->msg, payload_msg, sizeof(payload_msg)); + + /* Fill out remaining state members */ + atomic_set(&state->rx_good, 0); + atomic_set(&state->rx_bad, 0); + smp_wmb(); +} + +static int ef4_begin_loopback(struct ef4_tx_queue *tx_queue) +{ + struct ef4_nic *efx = tx_queue->efx; + struct ef4_loopback_state *state = efx->loopback_selftest; + struct ef4_loopback_payload *payload; + struct sk_buff *skb; + int i; + netdev_tx_t rc; + + /* Transmit N copies of buffer */ + for (i = 0; i < state->packet_count; i++) { + /* Allocate an skb, holding an extra reference for + * transmit completion counting */ + skb = alloc_skb(sizeof(state->payload), GFP_KERNEL); + if (!skb) + return -ENOMEM; + state->skbs[i] = skb; + skb_get(skb); + + /* Copy the payload in, incrementing the source address to + * exercise the rss vectors */ + payload = ((struct ef4_loopback_payload *) + skb_put(skb, sizeof(state->payload))); + memcpy(payload, &state->payload, sizeof(state->payload)); + payload->ip.saddr = htonl(INADDR_LOOPBACK | (i << 2)); + + /* Ensure everything we've written is visible to the + * interrupt handler. */ + smp_wmb(); + + netif_tx_lock_bh(efx->net_dev); + rc = ef4_enqueue_skb(tx_queue, skb); + netif_tx_unlock_bh(efx->net_dev); + + if (rc != NETDEV_TX_OK) { + netif_err(efx, drv, efx->net_dev, + "TX queue %d could not transmit packet %d of " + "%d in %s loopback test\n", tx_queue->queue, + i + 1, state->packet_count, + LOOPBACK_MODE(efx)); + + /* Defer cleaning up the other skbs for the caller */ + kfree_skb(skb); + return -EPIPE; + } + } + + return 0; +} + +static int ef4_poll_loopback(struct ef4_nic *efx) +{ + struct ef4_loopback_state *state = efx->loopback_selftest; + + return atomic_read(&state->rx_good) == state->packet_count; +} + +static int ef4_end_loopback(struct ef4_tx_queue *tx_queue, + struct ef4_loopback_self_tests *lb_tests) +{ + struct ef4_nic *efx = tx_queue->efx; + struct ef4_loopback_state *state = efx->loopback_selftest; + struct sk_buff *skb; + int tx_done = 0, rx_good, rx_bad; + int i, rc = 0; + + netif_tx_lock_bh(efx->net_dev); + + /* Count the number of tx completions, and decrement the refcnt. Any + * skbs not already completed will be free'd when the queue is flushed */ + for (i = 0; i < state->packet_count; i++) { + skb = state->skbs[i]; + if (skb && !skb_shared(skb)) + ++tx_done; + dev_kfree_skb(skb); + } + + netif_tx_unlock_bh(efx->net_dev); + + /* Check TX completion and received packet counts */ + rx_good = atomic_read(&state->rx_good); + rx_bad = atomic_read(&state->rx_bad); + if (tx_done != state->packet_count) { + /* Don't free the skbs; they will be picked up on TX + * overflow or channel teardown. + */ + netif_err(efx, drv, efx->net_dev, + "TX queue %d saw only %d out of an expected %d " + "TX completion events in %s loopback test\n", + tx_queue->queue, tx_done, state->packet_count, + LOOPBACK_MODE(efx)); + rc = -ETIMEDOUT; + /* Allow to fall through so we see the RX errors as well */ + } + + /* We may always be up to a flush away from our desired packet total */ + if (rx_good != state->packet_count) { + netif_dbg(efx, drv, efx->net_dev, + "TX queue %d saw only %d out of an expected %d " + "received packets in %s loopback test\n", + tx_queue->queue, rx_good, state->packet_count, + LOOPBACK_MODE(efx)); + rc = -ETIMEDOUT; + /* Fall through */ + } + + /* Update loopback test structure */ + lb_tests->tx_sent[tx_queue->queue] += state->packet_count; + lb_tests->tx_done[tx_queue->queue] += tx_done; + lb_tests->rx_good += rx_good; + lb_tests->rx_bad += rx_bad; + + return rc; +} + +static int +ef4_test_loopback(struct ef4_tx_queue *tx_queue, + struct ef4_loopback_self_tests *lb_tests) +{ + struct ef4_nic *efx = tx_queue->efx; + struct ef4_loopback_state *state = efx->loopback_selftest; + int i, begin_rc, end_rc; + + for (i = 0; i < 3; i++) { + /* Determine how many packets to send */ + state->packet_count = efx->txq_entries / 3; + state->packet_count = min(1 << (i << 2), state->packet_count); + state->skbs = kcalloc(state->packet_count, + sizeof(state->skbs[0]), GFP_KERNEL); + if (!state->skbs) + return -ENOMEM; + state->flush = false; + + netif_dbg(efx, drv, efx->net_dev, + "TX queue %d testing %s loopback with %d packets\n", + tx_queue->queue, LOOPBACK_MODE(efx), + state->packet_count); + + ef4_iterate_state(efx); + begin_rc = ef4_begin_loopback(tx_queue); + + /* This will normally complete very quickly, but be + * prepared to wait much longer. */ + msleep(1); + if (!ef4_poll_loopback(efx)) { + msleep(LOOPBACK_TIMEOUT_MS); + ef4_poll_loopback(efx); + } + + end_rc = ef4_end_loopback(tx_queue, lb_tests); + kfree(state->skbs); + + if (begin_rc || end_rc) { + /* Wait a while to ensure there are no packets + * floating around after a failure. */ + schedule_timeout_uninterruptible(HZ / 10); + return begin_rc ? begin_rc : end_rc; + } + } + + netif_dbg(efx, drv, efx->net_dev, + "TX queue %d passed %s loopback test with a burst length " + "of %d packets\n", tx_queue->queue, LOOPBACK_MODE(efx), + state->packet_count); + + return 0; +} + +/* Wait for link up. On Falcon, we would prefer to rely on ef4_monitor, but + * any contention on the mac lock (via e.g. ef4_mac_mcast_work) causes it + * to delay and retry. Therefore, it's safer to just poll directly. Wait + * for link up and any faults to dissipate. */ +static int ef4_wait_for_link(struct ef4_nic *efx) +{ + struct ef4_link_state *link_state = &efx->link_state; + int count, link_up_count = 0; + bool link_up; + + for (count = 0; count < 40; count++) { + schedule_timeout_uninterruptible(HZ / 10); + + if (efx->type->monitor != NULL) { + mutex_lock(&efx->mac_lock); + efx->type->monitor(efx); + mutex_unlock(&efx->mac_lock); + } + + mutex_lock(&efx->mac_lock); + link_up = link_state->up; + if (link_up) + link_up = !efx->type->check_mac_fault(efx); + mutex_unlock(&efx->mac_lock); + + if (link_up) { + if (++link_up_count == 2) + return 0; + } else { + link_up_count = 0; + } + } + + return -ETIMEDOUT; +} + +static int ef4_test_loopbacks(struct ef4_nic *efx, struct ef4_self_tests *tests, + unsigned int loopback_modes) +{ + enum ef4_loopback_mode mode; + struct ef4_loopback_state *state; + struct ef4_channel *channel = + ef4_get_channel(efx, efx->tx_channel_offset); + struct ef4_tx_queue *tx_queue; + int rc = 0; + + /* Set the port loopback_selftest member. From this point on + * all received packets will be dropped. Mark the state as + * "flushing" so all inflight packets are dropped */ + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (state == NULL) + return -ENOMEM; + BUG_ON(efx->loopback_selftest); + state->flush = true; + efx->loopback_selftest = state; + + /* Test all supported loopback modes */ + for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) { + if (!(loopback_modes & (1 << mode))) + continue; + + /* Move the port into the specified loopback mode. */ + state->flush = true; + mutex_lock(&efx->mac_lock); + efx->loopback_mode = mode; + rc = __ef4_reconfigure_port(efx); + mutex_unlock(&efx->mac_lock); + if (rc) { + netif_err(efx, drv, efx->net_dev, + "unable to move into %s loopback\n", + LOOPBACK_MODE(efx)); + goto out; + } + + rc = ef4_wait_for_link(efx); + if (rc) { + netif_err(efx, drv, efx->net_dev, + "loopback %s never came up\n", + LOOPBACK_MODE(efx)); + goto out; + } + + /* Test all enabled types of TX queue */ + ef4_for_each_channel_tx_queue(tx_queue, channel) { + state->offload_csum = (tx_queue->queue & + EF4_TXQ_TYPE_OFFLOAD); + rc = ef4_test_loopback(tx_queue, + &tests->loopback[mode]); + if (rc) + goto out; + } + } + + out: + /* Remove the flush. The caller will remove the loopback setting */ + state->flush = true; + efx->loopback_selftest = NULL; + wmb(); + kfree(state); + + if (rc == -EPERM) + rc = 0; + + return rc; +} + +/************************************************************************** + * + * Entry point + * + *************************************************************************/ + +int ef4_selftest(struct ef4_nic *efx, struct ef4_self_tests *tests, + unsigned flags) +{ + enum ef4_loopback_mode loopback_mode = efx->loopback_mode; + int phy_mode = efx->phy_mode; + int rc_test = 0, rc_reset, rc; + + ef4_selftest_async_cancel(efx); + + /* Online (i.e. non-disruptive) testing + * This checks interrupt generation, event delivery and PHY presence. */ + + rc = ef4_test_phy_alive(efx, tests); + if (rc && !rc_test) + rc_test = rc; + + rc = ef4_test_nvram(efx, tests); + if (rc && !rc_test) + rc_test = rc; + + rc = ef4_test_interrupts(efx, tests); + if (rc && !rc_test) + rc_test = rc; + + rc = ef4_test_eventq_irq(efx, tests); + if (rc && !rc_test) + rc_test = rc; + + if (rc_test) + return rc_test; + + if (!(flags & ETH_TEST_FL_OFFLINE)) + return ef4_test_phy(efx, tests, flags); + + /* Offline (i.e. disruptive) testing + * This checks MAC and PHY loopback on the specified port. */ + + /* Detach the device so the kernel doesn't transmit during the + * loopback test and the watchdog timeout doesn't fire. + */ + ef4_device_detach_sync(efx); + + if (efx->type->test_chip) { + rc_reset = efx->type->test_chip(efx, tests); + if (rc_reset) { + netif_err(efx, hw, efx->net_dev, + "Unable to recover from chip test\n"); + ef4_schedule_reset(efx, RESET_TYPE_DISABLE); + return rc_reset; + } + + if ((tests->memory < 0 || tests->registers < 0) && !rc_test) + rc_test = -EIO; + } + + /* Ensure that the phy is powered and out of loopback + * for the bist and loopback tests */ + mutex_lock(&efx->mac_lock); + efx->phy_mode &= ~PHY_MODE_LOW_POWER; + efx->loopback_mode = LOOPBACK_NONE; + __ef4_reconfigure_port(efx); + mutex_unlock(&efx->mac_lock); + + rc = ef4_test_phy(efx, tests, flags); + if (rc && !rc_test) + rc_test = rc; + + rc = ef4_test_loopbacks(efx, tests, efx->loopback_modes); + if (rc && !rc_test) + rc_test = rc; + + /* restore the PHY to the previous state */ + mutex_lock(&efx->mac_lock); + efx->phy_mode = phy_mode; + efx->loopback_mode = loopback_mode; + __ef4_reconfigure_port(efx); + mutex_unlock(&efx->mac_lock); + + netif_device_attach(efx->net_dev); + + return rc_test; +} + +void ef4_selftest_async_start(struct ef4_nic *efx) +{ + struct ef4_channel *channel; + + ef4_for_each_channel(channel, efx) + ef4_nic_event_test_start(channel); + schedule_delayed_work(&efx->selftest_work, IRQ_TIMEOUT); +} + +void ef4_selftest_async_cancel(struct ef4_nic *efx) +{ + cancel_delayed_work_sync(&efx->selftest_work); +} + +void ef4_selftest_async_work(struct work_struct *data) +{ + struct ef4_nic *efx = container_of(data, struct ef4_nic, + selftest_work.work); + struct ef4_channel *channel; + int cpu; + + ef4_for_each_channel(channel, efx) { + cpu = ef4_nic_event_test_irq_cpu(channel); + if (cpu < 0) + netif_err(efx, ifup, efx->net_dev, + "channel %d failed to trigger an interrupt\n", + channel->channel); + else + netif_dbg(efx, ifup, efx->net_dev, + "channel %d triggered interrupt on CPU %d\n", + channel->channel, cpu); + } +} |