/****************************************************************************
* Driver for Solarflare Solarstorm network controllers and boards
* Copyright 2005-2006 Fen Systems Ltd.
- * Copyright 2006-2008 Solarflare Communications Inc.
+ * Copyright 2006-2009 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
#include <linux/rtnetlink.h>
#include <asm/io.h>
#include "net_driver.h"
-#include "ethtool.h"
#include "efx.h"
-#include "falcon.h"
+#include "nic.h"
#include "selftest.h"
-#include "boards.h"
#include "workarounds.h"
-#include "mac.h"
+#include "spi.h"
+#include "io.h"
/*
* Loopback test packet structure
0x00, 0x0f, 0x53, 0x1b, 0x1b, 0x1b,
};
-static const char *payload_msg =
+static const char payload_msg[] =
"Hello world! This is an Efx loopback test in progress!";
/**
- * efx_selftest_state - persistent state during a selftest
+ * 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
*/
-struct efx_selftest_state {
- int flush;
+struct efx_loopback_state {
+ bool flush;
int packet_count;
struct sk_buff **skbs;
-
- /* Checksums are being offloaded */
- int offload_csum;
-
+ bool offload_csum;
atomic_t rx_good;
atomic_t rx_bad;
struct efx_loopback_payload payload;
/**************************************************************************
*
- * Configurable values
+ * MII, NVRAM and register tests
*
**************************************************************************/
-/* Level of loopback testing
- *
- * The maximum packet burst length is 16**(n-1), i.e.
- *
- * - Level 0 : no packets
- * - Level 1 : 1 packet
- * - Level 2 : 17 packets (1 * 1 packet, 1 * 16 packets)
- * - Level 3 : 273 packets (1 * 1 packet, 1 * 16 packet, 1 * 256 packets)
- *
- */
-static unsigned int loopback_test_level = 3;
+static int efx_test_phy_alive(struct efx_nic *efx, struct efx_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 efx_test_nvram(struct efx_nic *efx, struct efx_self_tests *tests)
+{
+ int rc = 0;
+
+ if (efx->type->test_nvram) {
+ rc = efx->type->test_nvram(efx);
+ tests->nvram = rc ? -1 : 1;
+ }
+
+ return rc;
+}
+
+static int efx_test_chip(struct efx_nic *efx, struct efx_self_tests *tests)
+{
+ int rc = 0;
+
+ /* Test register access */
+ if (efx->type->test_registers) {
+ rc = efx->type->test_registers(efx);
+ tests->registers = rc ? -1 : 1;
+ }
+
+ return rc;
+}
/**************************************************************************
*
/* ACK each interrupting event queue. Receiving an interrupt due to
* traffic before a test event is raised is considered a pass */
- efx_for_each_channel_with_interrupt(channel, efx) {
+ efx_for_each_channel(channel, efx) {
if (channel->work_pending)
efx_process_channel_now(channel);
if (efx->last_irq_cpu >= 0)
goto success;
}
- falcon_generate_interrupt(efx);
+ efx_nic_generate_interrupt(efx);
/* Wait for arrival of test interrupt. */
EFX_LOG(efx, "waiting for test interrupt\n");
return -ETIMEDOUT;
success:
- EFX_LOG(efx, "test interrupt (mode %d) seen on CPU%d\n",
- efx->interrupt_mode, efx->last_irq_cpu);
+ EFX_LOG(efx, "%s test interrupt seen on CPU%d\n", INT_MODE(efx),
+ efx->last_irq_cpu);
tests->interrupt = 1;
return 0;
}
-/* Test generation and receipt of non-interrupting events */
-static int efx_test_eventq(struct efx_channel *channel,
- struct efx_self_tests *tests)
-{
- unsigned int magic;
-
- /* Channel specific code, limited to 20 bits */
- magic = (0x00010150 + channel->channel);
- EFX_LOG(channel->efx, "channel %d testing event queue with code %x\n",
- channel->channel, magic);
-
- tests->eventq_dma[channel->channel] = -1;
- tests->eventq_int[channel->channel] = 1; /* fake pass */
- tests->eventq_poll[channel->channel] = 1; /* fake pass */
-
- /* Reset flag and zero magic word */
- channel->efx->last_irq_cpu = -1;
- channel->eventq_magic = 0;
- smp_wmb();
-
- falcon_generate_test_event(channel, magic);
- udelay(1);
-
- efx_process_channel_now(channel);
- if (channel->eventq_magic != magic) {
- EFX_ERR(channel->efx, "channel %d failed to see test event\n",
- channel->channel);
- return -ETIMEDOUT;
- } else {
- tests->eventq_dma[channel->channel] = 1;
- }
-
- return 0;
-}
-
/* Test generation and receipt of interrupting events */
static int efx_test_eventq_irq(struct efx_channel *channel,
struct efx_self_tests *tests)
channel->eventq_magic = 0;
smp_wmb();
- falcon_generate_test_event(channel, magic);
+ efx_nic_generate_test_event(channel, magic);
/* Wait for arrival of interrupt */
count = 0;
return 0;
}
-/**************************************************************************
- *
- * PHY testing
- *
- **************************************************************************/
-
-/* Check PHY presence by reading the PHY ID registers */
-static int efx_test_phy(struct efx_nic *efx,
- struct efx_self_tests *tests)
+static int efx_test_phy(struct efx_nic *efx, struct efx_self_tests *tests,
+ unsigned flags)
{
- u16 physid1, physid2;
- struct mii_if_info *mii = &efx->mii;
- struct net_device *net_dev = efx->net_dev;
-
- if (efx->phy_type == PHY_TYPE_NONE)
- return 0;
-
- EFX_LOG(efx, "testing PHY presence\n");
- tests->phy_ok = -1;
-
- physid1 = mii->mdio_read(net_dev, mii->phy_id, MII_PHYSID1);
- physid2 = mii->mdio_read(net_dev, mii->phy_id, MII_PHYSID2);
+ int rc;
- if ((physid1 != 0x0000) && (physid1 != 0xffff) &&
- (physid2 != 0x0000) && (physid2 != 0xffff)) {
- EFX_LOG(efx, "found MII PHY %d ID 0x%x:%x\n",
- mii->phy_id, physid1, physid2);
- tests->phy_ok = 1;
+ if (!efx->phy_op->run_tests)
return 0;
- }
- EFX_ERR(efx, "no MII PHY present with ID %d\n", mii->phy_id);
- return -ENODEV;
+ mutex_lock(&efx->mac_lock);
+ rc = efx->phy_op->run_tests(efx, tests->phy_ext, flags);
+ mutex_unlock(&efx->mac_lock);
+ return rc;
}
/**************************************************************************
void efx_loopback_rx_packet(struct efx_nic *efx,
const char *buf_ptr, int pkt_len)
{
- struct efx_selftest_state *state = efx->loopback_selftest;
+ struct efx_loopback_state *state = efx->loopback_selftest;
struct efx_loopback_payload *received;
struct efx_loopback_payload *payload;
return;
payload = &state->payload;
-
+
received = (struct efx_loopback_payload *) buf_ptr;
received->ip.saddr = payload->ip.saddr;
if (state->offload_csum)
/* Initialise an efx_selftest_state for a new iteration */
static void efx_iterate_state(struct efx_nic *efx)
{
- struct efx_selftest_state *state = efx->loopback_selftest;
+ struct efx_loopback_state *state = efx->loopback_selftest;
struct net_device *net_dev = efx->net_dev;
struct efx_loopback_payload *payload = &state->payload;
static int efx_begin_loopback(struct efx_tx_queue *tx_queue)
{
struct efx_nic *efx = tx_queue->efx;
- struct efx_selftest_state *state = efx->loopback_selftest;
+ struct efx_loopback_state *state = efx->loopback_selftest;
struct efx_loopback_payload *payload;
struct sk_buff *skb;
- int i, rc;
+ 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
+ /* Allocate an skb, holding an extra reference for
* transmit completion counting */
skb = alloc_skb(sizeof(state->payload), GFP_KERNEL);
if (!skb)
if (efx_dev_registered(efx))
netif_tx_lock_bh(efx->net_dev);
- rc = efx_xmit(efx, tx_queue, skb);
+ rc = efx_enqueue_skb(tx_queue, skb);
if (efx_dev_registered(efx))
netif_tx_unlock_bh(efx->net_dev);
static int efx_poll_loopback(struct efx_nic *efx)
{
- struct efx_selftest_state *state = efx->loopback_selftest;
+ struct efx_loopback_state *state = efx->loopback_selftest;
struct efx_channel *channel;
/* NAPI polling is not enabled, so process channels
* synchronously */
- efx_for_each_channel_with_interrupt(channel, efx) {
+ efx_for_each_channel(channel, efx) {
if (channel->work_pending)
efx_process_channel_now(channel);
}
struct efx_loopback_self_tests *lb_tests)
{
struct efx_nic *efx = tx_queue->efx;
- struct efx_selftest_state *state = efx->loopback_selftest;
+ struct efx_loopback_state *state = efx->loopback_selftest;
struct sk_buff *skb;
int tx_done = 0, rx_good, rx_bad;
int i, rc = 0;
struct efx_loopback_self_tests *lb_tests)
{
struct efx_nic *efx = tx_queue->efx;
- struct efx_selftest_state *state = efx->loopback_selftest;
+ struct efx_loopback_state *state = efx->loopback_selftest;
int i, begin_rc, end_rc;
- for (i = 0; i < loopback_test_level; i++) {
+ for (i = 0; i < 3; i++) {
/* Determine how many packets to send */
- state->packet_count = (efx->type->txd_ring_mask + 1) / 3;
+ state->packet_count = EFX_TXQ_SIZE / 3;
state->packet_count = min(1 << (i << 2), state->packet_count);
state->skbs = kzalloc(sizeof(state->skbs[0]) *
state->packet_count, GFP_KERNEL);
if (!state->skbs)
return -ENOMEM;
- state->flush = 0;
+ state->flush = false;
EFX_LOG(efx, "TX queue %d testing %s loopback with %d "
"packets\n", tx_queue->queue, LOOPBACK_MODE(efx),
return 0;
}
-static int efx_test_loopbacks(struct efx_nic *efx,
- struct efx_self_tests *tests,
- unsigned int loopback_modes)
+/* 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_selftest_state *state = efx->loopback_selftest;
- struct ethtool_cmd ecmd, ecmd_loopback;
- struct efx_tx_queue *tx_queue;
- enum efx_loopback_mode old_mode, mode;
- int count, rc, link_up;
+ struct efx_link_state *link_state = &efx->link_state;
+ int count;
+ 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);
+ } else {
+ struct efx_channel *channel = &efx->channel[0];
+ if (channel->work_pending)
+ efx_process_channel_now(channel);
+ }
- rc = efx_ethtool_get_settings(efx->net_dev, &ecmd);
- if (rc) {
- EFX_ERR(efx, "could not get GMII settings\n");
- return rc;
- }
- old_mode = efx->loopback_mode;
-
- /* Disable autonegotiation for the purposes of loopback */
- memcpy(&ecmd_loopback, &ecmd, sizeof(ecmd_loopback));
- if (ecmd_loopback.autoneg == AUTONEG_ENABLE) {
- ecmd_loopback.autoneg = AUTONEG_DISABLE;
- ecmd_loopback.duplex = DUPLEX_FULL;
- ecmd_loopback.speed = SPEED_10000;
- }
+ mutex_lock(&efx->mac_lock);
+ link_up = link_state->up;
+ if (link_up)
+ link_up = !efx->mac_op->check_fault(efx);
+ mutex_unlock(&efx->mac_lock);
- rc = efx_ethtool_set_settings(efx->net_dev, &ecmd_loopback);
- if (rc) {
- EFX_ERR(efx, "could not disable autonegotiation\n");
- goto out;
+ if (link_up)
+ return 0;
}
- tests->loopback_speed = ecmd_loopback.speed;
- tests->loopback_full_duplex = ecmd_loopback.duplex;
+
+ 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_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++) {
+ 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 = 1;
+ state->flush = true;
+ mutex_lock(&efx->mac_lock);
efx->loopback_mode = mode;
- efx_reconfigure_port(efx);
-
- /* Wait for the PHY to signal the link is up */
- count = 0;
- do {
- struct efx_channel *channel = &efx->channel[0];
+ rc = __efx_reconfigure_port(efx);
+ mutex_unlock(&efx->mac_lock);
+ if (rc) {
+ EFX_ERR(efx, "unable to move into %s loopback\n",
+ LOOPBACK_MODE(efx));
+ goto out;
+ }
- falcon_check_xmac(efx);
- schedule_timeout_uninterruptible(HZ / 10);
- if (channel->work_pending)
- efx_process_channel_now(channel);
- /* Wait for PHY events to be processed */
- flush_workqueue(efx->workqueue);
- rmb();
-
- /* efx->link_up can be 1 even if the XAUI link is down,
- * (bug5762). Usually, it's not worth bothering with the
- * difference, but for selftests, we need that extra
- * guarantee that the link is really, really, up.
- */
- link_up = efx->link_up;
- if (!falcon_xaui_link_ok(efx))
- link_up = 0;
-
- } while ((++count < 20) && !link_up);
-
- /* The link should now be up. If it isn't, there is no point
- * in attempting a loopback test */
- if (!link_up) {
+ rc = efx_wait_for_link(efx);
+ if (rc) {
EFX_ERR(efx, "loopback %s never came up\n",
LOOPBACK_MODE(efx));
- rc = -EIO;
goto out;
}
- EFX_LOG(efx, "link came up in %s loopback in %d iterations\n",
- LOOPBACK_MODE(efx), count);
-
/* Test every TX queue */
efx_for_each_tx_queue(tx_queue, efx) {
state->offload_csum = (tx_queue->queue ==
}
out:
- /* Take out of loopback and restore PHY settings */
- state->flush = 1;
- efx->loopback_mode = old_mode;
- efx_ethtool_set_settings(efx->net_dev, &ecmd);
+ /* Remove the flush. The caller will remove the loopback setting */
+ state->flush = true;
+ efx->loopback_selftest = NULL;
+ wmb();
+ kfree(state);
return rc;
}
/**************************************************************************
*
- * Entry points
+ * Entry point
*
*************************************************************************/
-/* Online (i.e. non-disruptive) testing
- * This checks interrupt generation, event delivery and PHY presence. */
-int efx_online_test(struct efx_nic *efx, struct efx_self_tests *tests)
+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;
+ enum reset_type reset_method = RESET_TYPE_INVISIBLE;
struct efx_channel *channel;
- int rc;
+ int rc_test = 0, rc_reset = 0, rc;
+
+ /* 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)
- return rc;
+ if (rc && !rc_test)
+ rc_test = rc;
+
efx_for_each_channel(channel, efx) {
- if (channel->has_interrupt)
- rc = efx_test_eventq_irq(channel, tests);
+ rc = efx_test_eventq_irq(channel, 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. */
+
+ /* force the carrier state off so the kernel doesn't transmit during
+ * the loopback test, and the watchdog timeout doesn't fire. Also put
+ * falcon into loopback for the register test.
+ */
+ mutex_lock(&efx->mac_lock);
+ efx->port_inhibited = true;
+ if (efx->loopback_modes) {
+ /* We need the 312 clock from the PHY to test the XMAC
+ * registers, so move into XGMII loopback if available */
+ if (efx->loopback_modes & (1 << LOOPBACK_XGMII))
+ efx->loopback_mode = LOOPBACK_XGMII;
else
- rc = efx_test_eventq(channel, tests);
- if (rc)
- return rc;
+ efx->loopback_mode = __ffs(efx->loopback_modes);
}
- rc = efx_test_phy(efx, tests);
- return rc;
-}
-/* Offline (i.e. disruptive) testing
- * This checks MAC and PHY loopback on the specified port. */
-int efx_offline_test(struct efx_nic *efx,
- struct efx_self_tests *tests, unsigned int loopback_modes)
-{
- struct efx_selftest_state *state;
- int rc;
+ __efx_reconfigure_port(efx);
+ mutex_unlock(&efx->mac_lock);
- /* Create a selftest_state structure to hold state for the test */
- state = kzalloc(sizeof(*state), GFP_KERNEL);
- if (state == NULL)
- return -ENOMEM;
+ /* free up all consumers of SRAM (including all the queues) */
+ efx_reset_down(efx, reset_method);
- /* 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 */
- BUG_ON(efx->loopback_selftest);
- state->flush = 1;
- efx->loopback_selftest = state;
+ rc = efx_test_chip(efx, tests);
+ if (rc && !rc_test)
+ rc_test = rc;
- rc = efx_test_loopbacks(efx, tests, loopback_modes);
+ /* reset the chip to recover from the register test */
+ rc_reset = efx->type->reset(efx, reset_method);
- efx->loopback_selftest = NULL;
- wmb();
- kfree(state);
+ /* Ensure that the phy is powered and out of loopback
+ * for the bist and loopback tests */
+ efx->phy_mode &= ~PHY_MODE_LOW_POWER;
+ efx->loopback_mode = LOOPBACK_NONE;
- return rc;
+ rc = efx_reset_up(efx, reset_method, rc_reset == 0);
+ if (rc && !rc_reset)
+ rc_reset = rc;
+
+ if (rc_reset) {
+ EFX_ERR(efx, "Unable to recover from chip test\n");
+ efx_schedule_reset(efx, RESET_TYPE_DISABLE);
+ return rc_reset;
+ }
+
+ 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->port_inhibited = false;
+ efx->loopback_mode = loopback_mode;
+ __efx_reconfigure_port(efx);
+ mutex_unlock(&efx->mac_lock);
+
+ return rc_test;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff