[dpdk-dev] [PATCH 3/3] common/mlx5: fix DevX register access opcode

[Viacheslav Ovsiienko <viacheslavo@mellanox.com>]

The dedicated MLX5_CMD_OP_ACCESS_REGISTER_USER opcode
must be used to read hardware register content from
unprotected mode.

Fixes: 737f44a25d97 ("common/mlx5: add register access DevX routine")

Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
---
 drivers/common/mlx5/mlx5_devx_cmds.c | 3 ++-
 drivers/common/mlx5/mlx5_prm.h       | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/common/mlx5/mlx5_devx_cmds.c b/drivers/common/mlx5/mlx5_devx_cmds.c
index 0cfa4dc..9f2f706 100644
--- a/drivers/common/mlx5/mlx5_devx_cmds.c
+++ b/drivers/common/mlx5/mlx5_devx_cmds.c
@@ -44,7 +44,8 @@
 		DRV_LOG(ERR, "Not enough  buffer for register read data");
 		return -1;
 	}
-	MLX5_SET(access_register_in, in, opcode, MLX5_CMD_OP_ACCESS_REGISTER);
+	MLX5_SET(access_register_in, in, opcode,
+		 MLX5_CMD_OP_ACCESS_REGISTER_USER);
 	MLX5_SET(access_register_in, in, op_mod,
 					MLX5_ACCESS_REGISTER_IN_OP_MOD_READ);
 	MLX5_SET(access_register_in, in, register_id, reg_id);
diff --git a/drivers/common/mlx5/mlx5_prm.h b/drivers/common/mlx5/mlx5_prm.h
index ec3b600..aba0368 100644
--- a/drivers/common/mlx5/mlx5_prm.h
+++ b/drivers/common/mlx5/mlx5_prm.h
@@ -806,6 +806,7 @@ enum {
 	MLX5_CMD_OP_CREATE_GENERAL_OBJECT = 0xa00,
 	MLX5_CMD_OP_MODIFY_GENERAL_OBJECT = 0xa01,
 	MLX5_CMD_OP_QUERY_GENERAL_OBJECT = 0xa02,
+	MLX5_CMD_OP_ACCESS_REGISTER_USER = 0xB0C,
 };
 
 enum {
-- 
1.8.3.1