#include "selftest.h"
#include "boards.h"
#include "workarounds.h"
-#include "mac.h"
+#include "spi.h"
+#include "falcon_io.h"
+#include "mdio_10g.h"
/*
* Loopback test packet structure
"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
* @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;
/**************************************************************************
*
- * 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_mii(struct efx_nic *efx, struct efx_self_tests *tests)
+{
+ int rc = 0;
+ 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;
+
+ mutex_lock(&efx->mac_lock);
+ tests->mii = -1;
+
+ physid1 = mii->mdio_read(net_dev, mii->phy_id, MII_PHYSID1);
+ physid2 = mii->mdio_read(net_dev, mii->phy_id, MII_PHYSID2);
+
+ if ((physid1 == 0x0000) || (physid1 == 0xffff) ||
+ (physid2 == 0x0000) || (physid2 == 0xffff)) {
+ EFX_ERR(efx, "no MII PHY present with ID %d\n",
+ mii->phy_id);
+ rc = -EINVAL;
+ goto out;
+ }
+
+ if (EFX_IS10G(efx)) {
+ rc = mdio_clause45_check_mmds(efx, efx->phy_op->mmds, 0);
+ if (rc)
+ goto out;
+ }
+
+out:
+ mutex_unlock(&efx->mac_lock);
+ tests->mii = rc ? -1 : 1;
+ return rc;
+}
+
+static int efx_test_nvram(struct efx_nic *efx, struct efx_self_tests *tests)
+{
+ int rc;
+
+ rc = falcon_read_nvram(efx, NULL);
+ tests->nvram = rc ? -1 : 1;
+ return rc;
+}
+
+static int efx_test_chip(struct efx_nic *efx, struct efx_self_tests *tests)
+{
+ int rc;
+
+ /* Not supported on A-series silicon */
+ if (falcon_rev(efx) < FALCON_REV_B0)
+ return 0;
+
+ rc = falcon_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)
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)
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)
{
- 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->test)
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->test(efx);
+ mutex_unlock(&efx->mac_lock);
+ tests->phy = rc ? -1 : 1;
+ 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;
smp_wmb();
}
-static int efx_tx_loopback(struct efx_tx_queue *tx_queue)
+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;
/* 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)
return 0;
}
-static int efx_rx_loopback(struct efx_tx_queue *tx_queue,
- struct efx_loopback_self_tests *lb_tests)
+static int efx_poll_loopback(struct efx_nic *efx)
+{
+ 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(channel, efx) {
+ if (channel->work_pending)
+ efx_process_channel_now(channel);
+ }
+ 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_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_channel *channel;
- int i, tx_rc, rx_rc;
+ 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 = min(1 << (i << 2), state->packet_count);
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),
state->packet_count);
efx_iterate_state(efx);
- tx_rc = efx_tx_loopback(tx_queue);
-
- /* NAPI polling is not enabled, so process channels synchronously */
- schedule_timeout_uninterruptible(HZ / 50);
- efx_for_each_channel_with_interrupt(channel, efx) {
- if (channel->work_pending)
- efx_process_channel_now(channel);
+ begin_rc = efx_begin_loopback(tx_queue);
+
+ /* This will normally complete very quickly, but be
+ * prepared to wait up to 100 ms. */
+ msleep(1);
+ if (!efx_poll_loopback(efx)) {
+ msleep(100);
+ efx_poll_loopback(efx);
}
- rx_rc = efx_rx_loopback(tx_queue, lb_tests);
+ end_rc = efx_end_loopback(tx_queue, lb_tests);
kfree(state->skbs);
- if (tx_rc || rx_rc) {
+ 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 tx_rc ? tx_rc : rx_rc;
+ return begin_rc ? begin_rc : end_rc;
}
}
return 0;
}
-static int efx_test_loopbacks(struct efx_nic *efx,
+static int efx_test_loopbacks(struct efx_nic *efx, struct ethtool_cmd ecmd,
struct efx_self_tests *tests,
unsigned int loopback_modes)
{
- struct efx_selftest_state *state = efx->loopback_selftest;
- struct ethtool_cmd ecmd, ecmd_loopback;
+ enum efx_loopback_mode mode;
+ struct efx_loopback_state *state;
struct efx_tx_queue *tx_queue;
- enum efx_loopback_mode old_mode, mode;
- int count, rc, link_up;
+ bool link_up;
+ int count, rc = 0;
- 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;
- }
-
- rc = efx_ethtool_set_settings(efx->net_dev, &ecmd_loopback);
- if (rc) {
- EFX_ERR(efx, "could not disable autonegotiation\n");
- goto out;
- }
- tests->loopback_speed = ecmd_loopback.speed;
- tests->loopback_full_duplex = ecmd_loopback.duplex;
+ /* 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;
efx->loopback_mode = mode;
efx_reconfigure_port(efx);
- /* Wait for the PHY to signal the link is up */
+ /* Wait for the PHY to signal the link is up. Interrupts
+ * are enabled for PHY's using LASI, otherwise we poll()
+ * quickly */
count = 0;
do {
struct efx_channel *channel = &efx->channel[0];
- falcon_check_xmac(efx);
+ efx->phy_op->poll(efx);
schedule_timeout_uninterruptible(HZ / 10);
if (channel->work_pending)
efx_process_channel_now(channel);
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.
- */
+ /* We need both the phy and xaui links to be ok.
+ * rather than relying on the falcon_xmac irq/poll
+ * regime, just poll xaui directly */
link_up = efx->link_up;
- if (!falcon_xaui_link_ok(efx))
- link_up = 0;
+ if (link_up && EFX_IS10G(efx) &&
+ !falcon_xaui_link_ok(efx))
+ link_up = false;
} while ((++count < 20) && !link_up);
}
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;
}
int efx_online_test(struct efx_nic *efx, struct efx_self_tests *tests)
{
struct efx_channel *channel;
- int rc;
+ int rc, rc2 = 0;
+
+ rc = efx_test_mii(efx, tests);
+ if (rc && !rc2)
+ rc2 = rc;
+
+ rc = efx_test_nvram(efx, tests);
+ if (rc && !rc2)
+ rc2 = rc;
rc = efx_test_interrupts(efx, tests);
- if (rc)
- return rc;
+ if (rc && !rc2)
+ rc2 = rc;
+
efx_for_each_channel(channel, efx) {
- if (channel->has_interrupt)
- rc = efx_test_eventq_irq(channel, tests);
- else
- rc = efx_test_eventq(channel, tests);
- if (rc)
- return rc;
+ rc = efx_test_eventq_irq(channel, tests);
+ if (rc && !rc2)
+ rc2 = rc;
}
- rc = efx_test_phy(efx, tests);
- return rc;
+
+ return rc2;
}
/* Offline (i.e. disruptive) testing
int efx_offline_test(struct efx_nic *efx,
struct efx_self_tests *tests, unsigned int loopback_modes)
{
- struct efx_selftest_state *state;
- int rc;
+ enum efx_loopback_mode loopback_mode = efx->loopback_mode;
+ int phy_mode = efx->phy_mode;
+ struct ethtool_cmd ecmd, ecmd_test;
+ int rc, rc2 = 0;
+
+ /* 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
+ efx->loopback_mode = __ffs(efx->loopback_modes);
+ }
- /* Create a selftest_state structure to hold state for the test */
- state = kzalloc(sizeof(*state), GFP_KERNEL);
- if (state == NULL)
- return -ENOMEM;
+ __efx_reconfigure_port(efx);
+ mutex_unlock(&efx->mac_lock);
- /* 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;
+ /* free up all consumers of SRAM (including all the queues) */
+ efx_reset_down(efx, &ecmd);
- rc = efx_test_loopbacks(efx, tests, loopback_modes);
+ rc = efx_test_chip(efx, tests);
+ if (rc && !rc2)
+ rc2 = rc;
- efx->loopback_selftest = NULL;
- wmb();
- kfree(state);
+ /* reset the chip to recover from the register test */
+ rc = falcon_reset_hw(efx, RESET_TYPE_ALL);
- return rc;
+ /* Modify the saved ecmd so that when efx_reset_up() restores the phy
+ * state, AN is disabled, and the phy is powered, and out of loopback */
+ memcpy(&ecmd_test, &ecmd, sizeof(ecmd_test));
+ if (ecmd_test.autoneg == AUTONEG_ENABLE) {
+ ecmd_test.autoneg = AUTONEG_DISABLE;
+ ecmd_test.duplex = DUPLEX_FULL;
+ }
+ efx->loopback_mode = LOOPBACK_NONE;
+
+ rc = efx_reset_up(efx, &ecmd_test, rc == 0);
+ if (rc) {
+ EFX_ERR(efx, "Unable to recover from chip test\n");
+ efx_schedule_reset(efx, RESET_TYPE_DISABLE);
+ return rc;
+ }
+
+ rc = efx_test_phy(efx, tests);
+ if (rc && !rc2)
+ rc2 = rc;
+
+ rc = efx_test_loopbacks(efx, ecmd_test, tests, loopback_modes);
+ if (rc && !rc2)
+ rc2 = rc;
+
+ /* restore the PHY to the previous state */
+ efx->loopback_mode = loopback_mode;
+ efx->phy_mode = phy_mode;
+ efx->port_inhibited = false;
+ efx_ethtool_set_settings(efx->net_dev, &ecmd);
+
+ return rc2;
}
projects / firefly-linux-kernel-4.4.55.git / blobdiff