sfc: Extend self-tests
Include PMA/PMD in loopback self-tests as intended.
Add NVRAM checksum validation and include it in self-tests.
Add register self-tests.
Run PHY self-tests where available.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/net/sfc/selftest.c b/drivers/net/sfc/selftest.c
index 2f7def6..362956e 100644
--- a/drivers/net/sfc/selftest.c
+++ b/drivers/net/sfc/selftest.c
@@ -27,6 +27,9 @@
#include "boards.h"
#include "workarounds.h"
#include "mac.h"
+#include "spi.h"
+#include "falcon_io.h"
+#include "mdio_10g.h"
/*
* Loopback test packet structure
@@ -51,7 +54,7 @@
"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
@@ -59,7 +62,7 @@
* @rx_bad: RX bad packet count
* @payload: Payload used in tests
*/
-struct efx_selftest_state {
+struct efx_loopback_state {
bool flush;
int packet_count;
struct sk_buff **skbs;
@@ -74,21 +77,65 @@
/**************************************************************************
*
- * 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;
+ }
+
+ 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;
+}
/**************************************************************************
*
@@ -199,39 +246,18 @@
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;
+ int rc;
- if (efx->phy_type == PHY_TYPE_NONE)
+ if (!efx->phy_op->test)
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);
-
- 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;
- 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;
}
/**************************************************************************
@@ -247,7 +273,7 @@
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;
@@ -258,7 +284,7 @@
return;
payload = &state->payload;
-
+
received = (struct efx_loopback_payload *) buf_ptr;
received->ip.saddr = payload->ip.saddr;
if (state->offload_csum)
@@ -332,7 +358,7 @@
/* 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;
@@ -368,14 +394,14 @@
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)
@@ -416,7 +442,7 @@
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
@@ -432,7 +458,7 @@
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;
@@ -491,10 +517,10 @@
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 = min(1 << (i << 2), state->packet_count);
@@ -537,42 +563,28 @@
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;
bool link_up;
- int count, rc;
+ 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;
@@ -601,7 +613,7 @@
*/
link_up = efx->link_up;
if (!falcon_xaui_link_ok(efx))
- link_up = 0;
+ link_up = false;
} while ((++count < 20) && !link_up);
@@ -629,10 +641,11 @@
}
out:
- /* Take out of loopback and restore PHY settings */
+ /* Remove the flush. The caller will remove the loopback setting */
state->flush = true;
- efx->loopback_mode = old_mode;
- efx_ethtool_set_settings(efx->net_dev, &ecmd);
+ efx->loopback_selftest = NULL;
+ wmb();
+ kfree(state);
return rc;
}
@@ -648,18 +661,27 @@
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) {
rc = efx_test_eventq_irq(channel, tests);
- if (rc)
- return rc;
+ if (rc && !rc2)
+ rc2 = rc;
}
- rc = efx_test_phy(efx, tests);
- return rc;
+
+ return rc2;
}
/* Offline (i.e. disruptive) testing
@@ -667,27 +689,66 @@
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;
- /* Create a selftest_state structure to hold state for the test */
- state = kzalloc(sizeof(*state), GFP_KERNEL);
- if (state == NULL)
- return -ENOMEM;
+ /* 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)
+ efx->loopback_mode = __ffs(efx->loopback_modes);
+ __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 = true;
- 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;
+ ecmd_test.speed = SPEED_10000;
+ }
+ 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;
+ }
+
+ tests->loopback_speed = ecmd_test.speed;
+ tests->loopback_full_duplex = ecmd_test.duplex;
+
+ 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;
}