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>

2 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/mlx4/cmd.h b/include/linux/mlx4/cmd.h
index 0f82293a82ed..78a1b9671752 100644
--- a/include/linux/mlx4/cmd.h
+++ b/include/linux/mlx4/cmd.h
@@ -56,6 +56,7 @@ enum {
         MLX4_CMD_QUERY_HCA       = 0xb,
         MLX4_CMD_QUERY_PORT      = 0x43,
         MLX4_CMD_SENSE_PORT      = 0x4d,
+        MLX4_CMD_HW_HEALTH_CHECK = 0x50,
         MLX4_CMD_SET_PORT        = 0xc,
         MLX4_CMD_ACCESS_DDR      = 0x2e,
         MLX4_CMD_MAP_ICM         = 0xffa,
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 7a7f9c1e679a..2cec58722738 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -229,6 +229,7 @@ struct mlx4_caps {
         u32                     bmme_flags;
         u32                     reserved_lkey;
         u16                     stat_rate_support;
+        int                     loopback_support;
         u8                      port_width_cap[MLX4_MAX_PORTS + 1];
         int                     max_gso_sz;
         int                     reserved_qps_cnt[MLX4_NUM_QP_REGION];
@@ -480,5 +481,6 @@ void mlx4_fmr_unmap(struct mlx4_dev *dev, struct mlx4_fmr *fmr,
                     u32 *lkey, u32 *rkey);
 int mlx4_fmr_free(struct mlx4_dev *dev, struct mlx4_fmr *fmr);
 int mlx4_SYNC_TPT(struct mlx4_dev *dev);
+int mlx4_test_interrupts(struct mlx4_dev *dev);
 
 #endif /* MLX4_DEVICE_H */