mlx4_en: Added self diagnostics test implementation
The selftest includes 5 features:
1. Interrupt test: Executing commands and receiving command completion
on all our interrupt vectors.
2. Link test: Verifying we are connected to valid link partner.
3. Speed test: Check that we negotiated link speed correctly.
4. Registers test: Activate HW health check command.
5. Loopback test: Send a packet on loopback interface and catch it on RX side.
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/mlx4/eq.c b/drivers/net/mlx4/eq.c
index 6d7b2bf..552d0fc 100644
--- a/drivers/net/mlx4/eq.c
+++ b/drivers/net/mlx4/eq.c
@@ -699,3 +699,47 @@
kfree(priv->eq_table.uar_map);
}
+
+/* A test that verifies that we can accept interrupts on all
+ * the irq vectors of the device.
+ * Interrupts are checked using the NOP command.
+ */
+int mlx4_test_interrupts(struct mlx4_dev *dev)
+{
+ struct mlx4_priv *priv = mlx4_priv(dev);
+ int i;
+ int err;
+
+ err = mlx4_NOP(dev);
+ /* When not in MSI_X, there is only one irq to check */
+ if (!(dev->flags & MLX4_FLAG_MSI_X))
+ return err;
+
+ /* A loop over all completion vectors, for each vector we will check
+ * whether it works by mapping command completions to that vector
+ * and performing a NOP command
+ */
+ for(i = 0; !err && (i < dev->caps.num_comp_vectors); ++i) {
+ /* Temporary use polling for command completions */
+ mlx4_cmd_use_polling(dev);
+
+ /* Map the new eq to handle all asyncronous events */
+ err = mlx4_MAP_EQ(dev, MLX4_ASYNC_EVENT_MASK, 0,
+ priv->eq_table.eq[i].eqn);
+ if (err) {
+ mlx4_warn(dev, "Failed mapping eq for interrupt test\n");
+ mlx4_cmd_use_events(dev);
+ break;
+ }
+
+ /* Go back to using events */
+ mlx4_cmd_use_events(dev);
+ err = mlx4_NOP(dev);
+ }
+
+ /* Return to default */
+ mlx4_MAP_EQ(dev, MLX4_ASYNC_EVENT_MASK, 0,
+ priv->eq_table.eq[dev->caps.num_comp_vectors].eqn);
+ return err;
+}
+EXPORT_SYMBOL(mlx4_test_interrupts);