// SPDX-License-Identifier: GPL-2.0-only
|
/****************************************************************************
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* Driver for Solarflare network controllers and boards
|
* Copyright 2005-2006 Fen Systems Ltd.
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* Copyright 2006-2012 Solarflare Communications Inc.
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*/
|
|
#include <linux/netdevice.h>
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/kernel_stat.h>
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#include <linux/pci.h>
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#include <linux/ethtool.h>
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#include <linux/ip.h>
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#include <linux/in.h>
|
#include <linux/udp.h>
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#include <linux/rtnetlink.h>
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#include <linux/slab.h>
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#include "net_driver.h"
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#include "efx.h"
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#include "efx_common.h"
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#include "efx_channels.h"
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#include "nic.h"
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#include "mcdi_port_common.h"
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#include "selftest.h"
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#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 efx_loopback_payload {
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struct ethhdr header;
|
struct iphdr ip;
|
struct udphdr udp;
|
__be16 iteration;
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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[] =
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"Hello world! This is an Efx loopback test in progress!";
|
|
/* Interrupt mode names */
|
static const unsigned int efx_interrupt_mode_max = EFX_INT_MODE_MAX;
|
static const char *const efx_interrupt_mode_names[] = {
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[EFX_INT_MODE_MSIX] = "MSI-X",
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[EFX_INT_MODE_MSI] = "MSI",
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[EFX_INT_MODE_LEGACY] = "legacy",
|
};
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#define INT_MODE(efx) \
|
STRING_TABLE_LOOKUP(efx->interrupt_mode, efx_interrupt_mode)
|
|
/**
|
* struct efx_loopback_state - persistent state during a loopback selftest
|
* @flush: Drop all packets in efx_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
|
*/
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struct efx_loopback_state {
|
bool flush;
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int packet_count;
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struct sk_buff **skbs;
|
bool offload_csum;
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atomic_t rx_good;
|
atomic_t rx_bad;
|
struct efx_loopback_payload payload;
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};
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|
/* How long to wait for all the packets to arrive (in ms) */
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#define LOOPBACK_TIMEOUT_MS 1000
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/**************************************************************************
|
*
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* MII, NVRAM and register tests
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*
|
**************************************************************************/
|
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static int efx_test_phy_alive(struct efx_nic *efx, struct efx_self_tests *tests)
|
{
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int rc = 0;
|
|
rc = efx_mcdi_phy_test_alive(efx);
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tests->phy_alive = rc ? -1 : 1;
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|
return rc;
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}
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static int efx_test_nvram(struct efx_nic *efx, struct efx_self_tests *tests)
|
{
|
int rc = 0;
|
|
if (efx->type->test_nvram) {
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rc = efx->type->test_nvram(efx);
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if (rc == -EPERM)
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rc = 0;
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else
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tests->nvram = rc ? -1 : 1;
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}
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|
return rc;
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}
|
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/**************************************************************************
|
*
|
* Interrupt and event queue testing
|
*
|
**************************************************************************/
|
|
/* Test generation and receipt of interrupts */
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static int efx_test_interrupts(struct efx_nic *efx,
|
struct efx_self_tests *tests)
|
{
|
unsigned long timeout, wait;
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int cpu;
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int rc;
|
|
netif_dbg(efx, drv, efx->net_dev, "testing interrupts\n");
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tests->interrupt = -1;
|
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rc = efx_nic_irq_test_start(efx);
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if (rc == -ENOTSUPP) {
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netif_dbg(efx, drv, efx->net_dev,
|
"direct interrupt testing not supported\n");
|
tests->interrupt = 0;
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return 0;
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}
|
|
timeout = jiffies + IRQ_TIMEOUT;
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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);
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cpu = efx_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 efx_test_eventq_irq(struct efx_nic *efx,
|
struct efx_self_tests *tests)
|
{
|
struct efx_channel *channel;
|
unsigned int read_ptr[EFX_MAX_CHANNELS];
|
unsigned long napi_ran = 0, dma_pend = 0, int_pend = 0;
|
unsigned long timeout, wait;
|
|
BUILD_BUG_ON(EFX_MAX_CHANNELS > BITS_PER_LONG);
|
|
efx_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);
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efx_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);
|
|
efx_for_each_channel(channel, efx) {
|
efx_stop_eventq(channel);
|
if (channel->eventq_read_ptr !=
|
read_ptr[channel->channel]) {
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set_bit(channel->channel, &napi_ran);
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clear_bit(channel->channel, &dma_pend);
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clear_bit(channel->channel, &int_pend);
|
} else {
|
if (efx_nic_event_present(channel))
|
clear_bit(channel->channel, &dma_pend);
|
if (efx_nic_event_test_irq_cpu(channel) >= 0)
|
clear_bit(channel->channel, &int_pend);
|
}
|
efx_start_eventq(channel);
|
}
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|
wait *= 2;
|
} while ((dma_pend || int_pend) && time_before(jiffies, timeout));
|
|
efx_for_each_channel(channel, efx) {
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bool dma_seen = !test_bit(channel->channel, &dma_pend);
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bool int_seen = !test_bit(channel->channel, &int_pend);
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tests->eventq_dma[channel->channel] = dma_seen ? 1 : -1;
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tests->eventq_int[channel->channel] = int_seen ? 1 : -1;
|
|
if (dma_seen && int_seen) {
|
netif_dbg(efx, drv, efx->net_dev,
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"channel %d event queue passed (with%s NAPI)\n",
|
channel->channel,
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test_bit(channel->channel, &napi_ran) ?
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"" : "out");
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} else {
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/* Report failure and whether either interrupt or DMA
|
* worked
|
*/
|
netif_err(efx, drv, efx->net_dev,
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"channel %d timed out waiting for event queue\n",
|
channel->channel);
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if (int_seen)
|
netif_err(efx, drv, efx->net_dev,
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"channel %d saw interrupt "
|
"during event queue test\n",
|
channel->channel);
|
if (dma_seen)
|
netif_err(efx, drv, efx->net_dev,
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"channel %d event was generated, but "
|
"failed to trigger an interrupt\n",
|
channel->channel);
|
}
|
}
|
|
return (dma_pend || int_pend) ? -ETIMEDOUT : 0;
|
}
|
|
static int efx_test_phy(struct efx_nic *efx, struct efx_self_tests *tests,
|
unsigned flags)
|
{
|
int rc;
|
|
mutex_lock(&efx->mac_lock);
|
rc = efx_mcdi_phy_run_tests(efx, tests->phy_ext, flags);
|
mutex_unlock(&efx->mac_lock);
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if (rc == -EPERM)
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rc = 0;
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else
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netif_info(efx, drv, efx->net_dev,
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"%s phy selftest\n", rc ? "Failed" : "Passed");
|
|
return rc;
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}
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/**************************************************************************
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*
|
* Loopback testing
|
* NB Only one loopback test can be executing concurrently.
|
*
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**************************************************************************/
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/* Loopback test RX callback
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* This is called for each received packet during loopback testing.
|
*/
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void efx_loopback_rx_packet(struct efx_nic *efx,
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const char *buf_ptr, int pkt_len)
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{
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struct efx_loopback_state *state = efx->loopback_selftest;
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struct efx_loopback_payload *received;
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struct efx_loopback_payload *payload;
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|
BUG_ON(!buf_ptr);
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/* If we are just flushing, then drop the packet */
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if ((state == NULL) || state->flush)
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return;
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payload = &state->payload;
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received = (struct efx_loopback_payload *) buf_ptr;
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received->ip.saddr = payload->ip.saddr;
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if (state->offload_csum)
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received->ip.check = payload->ip.check;
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/* Check that header exists */
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if (pkt_len < sizeof(received->header)) {
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netif_err(efx, drv, efx->net_dev,
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"saw runt RX packet (length %d) in %s loopback "
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"test\n", pkt_len, LOOPBACK_MODE(efx));
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goto err;
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}
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/* Check that the ethernet header exists */
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if (memcmp(&received->header, &payload->header, ETH_HLEN) != 0) {
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netif_err(efx, drv, efx->net_dev,
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"saw non-loopback RX packet in %s loopback test\n",
|
LOOPBACK_MODE(efx));
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goto err;
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}
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/* Check packet length */
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if (pkt_len != sizeof(*payload)) {
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netif_err(efx, drv, efx->net_dev,
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"saw incorrect RX packet length %d (wanted %d) in "
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"%s loopback test\n", pkt_len, (int)sizeof(*payload),
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LOOPBACK_MODE(efx));
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goto err;
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}
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/* Check that IP header matches */
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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));
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goto err;
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}
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/* Check that msg and padding matches */
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if (memcmp(&received->msg, &payload->msg, sizeof(received->msg)) != 0) {
|
netif_err(efx, drv, efx->net_dev,
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"saw corrupted RX packet in %s loopback test\n",
|
LOOPBACK_MODE(efx));
|
goto err;
|
}
|
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/* Check that iteration matches */
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if (received->iteration != payload->iteration) {
|
netif_err(efx, drv, efx->net_dev,
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"saw RX packet from iteration %d (wanted %d) in "
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"%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 efx_selftest_state for a new iteration */
|
static void efx_iterate_state(struct efx_nic *efx)
|
{
|
struct efx_loopback_state *state = efx->loopback_selftest;
|
struct net_device *net_dev = efx->net_dev;
|
struct efx_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 efx_begin_loopback(struct efx_tx_queue *tx_queue)
|
{
|
struct efx_nic *efx = tx_queue->efx;
|
struct efx_loopback_state *state = efx->loopback_selftest;
|
struct efx_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 = 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 = efx_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->label,
|
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 efx_poll_loopback(struct efx_nic *efx)
|
{
|
struct efx_loopback_state *state = efx->loopback_selftest;
|
|
return atomic_read(&state->rx_good) == state->packet_count;
|
}
|
|
static int efx_end_loopback(struct efx_tx_queue *tx_queue,
|
struct efx_loopback_self_tests *lb_tests)
|
{
|
struct efx_nic *efx = tx_queue->efx;
|
struct efx_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->label, 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->label, rx_good, state->packet_count,
|
LOOPBACK_MODE(efx));
|
rc = -ETIMEDOUT;
|
/* Fall through */
|
}
|
|
/* Update loopback test structure */
|
lb_tests->tx_sent[tx_queue->label] += state->packet_count;
|
lb_tests->tx_done[tx_queue->label] += tx_done;
|
lb_tests->rx_good += rx_good;
|
lb_tests->rx_bad += rx_bad;
|
|
return rc;
|
}
|
|
static int
|
efx_test_loopback(struct efx_tx_queue *tx_queue,
|
struct efx_loopback_self_tests *lb_tests)
|
{
|
struct efx_nic *efx = tx_queue->efx;
|
struct efx_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 (hw %d) testing %s loopback with %d packets\n",
|
tx_queue->label, tx_queue->queue, LOOPBACK_MODE(efx),
|
state->packet_count);
|
|
efx_iterate_state(efx);
|
begin_rc = efx_begin_loopback(tx_queue);
|
|
/* This will normally complete very quickly, but be
|
* prepared to wait much longer. */
|
msleep(1);
|
if (!efx_poll_loopback(efx)) {
|
msleep(LOOPBACK_TIMEOUT_MS);
|
efx_poll_loopback(efx);
|
}
|
|
end_rc = efx_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->label, LOOPBACK_MODE(efx),
|
state->packet_count);
|
|
return 0;
|
}
|
|
/* Wait for link up. On Falcon, we would prefer to rely on efx_monitor, but
|
* any contention on the mac lock (via e.g. efx_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 efx_wait_for_link(struct efx_nic *efx)
|
{
|
struct efx_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 efx_test_loopbacks(struct efx_nic *efx, struct efx_self_tests *tests,
|
unsigned int loopback_modes)
|
{
|
enum efx_loopback_mode mode;
|
struct efx_loopback_state *state;
|
struct efx_channel *channel =
|
efx_get_channel(efx, efx->tx_channel_offset);
|
struct efx_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 = __efx_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 = efx_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 */
|
efx_for_each_channel_tx_queue(tx_queue, channel) {
|
state->offload_csum = (tx_queue->type &
|
EFX_TXQ_TYPE_OUTER_CSUM);
|
rc = efx_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 efx_selftest(struct efx_nic *efx, struct efx_self_tests *tests,
|
unsigned flags)
|
{
|
enum efx_loopback_mode loopback_mode = efx->loopback_mode;
|
int phy_mode = efx->phy_mode;
|
int rc_test = 0, rc_reset, rc;
|
|
efx_selftest_async_cancel(efx);
|
|
/* Online (i.e. non-disruptive) testing
|
* This checks interrupt generation, event delivery and PHY presence. */
|
|
rc = efx_test_phy_alive(efx, tests);
|
if (rc && !rc_test)
|
rc_test = rc;
|
|
rc = efx_test_nvram(efx, tests);
|
if (rc && !rc_test)
|
rc_test = rc;
|
|
rc = efx_test_interrupts(efx, tests);
|
if (rc && !rc_test)
|
rc_test = rc;
|
|
rc = efx_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 efx_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.
|
*/
|
efx_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");
|
efx_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;
|
__efx_reconfigure_port(efx);
|
mutex_unlock(&efx->mac_lock);
|
|
rc = efx_test_phy(efx, tests, flags);
|
if (rc && !rc_test)
|
rc_test = rc;
|
|
rc = efx_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;
|
__efx_reconfigure_port(efx);
|
mutex_unlock(&efx->mac_lock);
|
|
efx_device_attach_if_not_resetting(efx);
|
|
return rc_test;
|
}
|
|
void efx_selftest_async_start(struct efx_nic *efx)
|
{
|
struct efx_channel *channel;
|
|
efx_for_each_channel(channel, efx)
|
efx_nic_event_test_start(channel);
|
schedule_delayed_work(&efx->selftest_work, IRQ_TIMEOUT);
|
}
|
|
void efx_selftest_async_cancel(struct efx_nic *efx)
|
{
|
cancel_delayed_work_sync(&efx->selftest_work);
|
}
|
|
static void efx_selftest_async_work(struct work_struct *data)
|
{
|
struct efx_nic *efx = container_of(data, struct efx_nic,
|
selftest_work.work);
|
struct efx_channel *channel;
|
int cpu;
|
|
efx_for_each_channel(channel, efx) {
|
cpu = efx_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);
|
}
|
}
|
|
void efx_selftest_async_init(struct efx_nic *efx)
|
{
|
INIT_DELAYED_WORK(&efx->selftest_work, efx_selftest_async_work);
|
}
|
