Author: hselasky
Date: Fri Sep 16 11:45:35 2016
New Revision: 305872
URL: https://svnweb.freebsd.org/changeset/base/305872

Log:
  mlx5en: Properly declare doorbell lock for 32-bit CPUs.
  
  Sponsored by: Mellanox Technologies
  MFC after:    1 week

Modified:
  head/sys/dev/mlx5/mlx5_en/en.h
  head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c

Modified: head/sys/dev/mlx5/mlx5_en/en.h
==============================================================================
--- head/sys/dev/mlx5/mlx5_en/en.h      Fri Sep 16 11:40:45 2016        
(r305871)
+++ head/sys/dev/mlx5/mlx5_en/en.h      Fri Sep 16 11:45:35 2016        
(r305872)
@@ -662,6 +662,7 @@ struct mlx5e_priv {
        struct work_struct update_stats_work;
        struct work_struct update_carrier_work;
        struct work_struct set_rx_mode_work;
+       MLX5_DECLARE_DOORBELL_LOCK(doorbell_lock)
 
        struct mlx5_core_dev *mdev;
        struct ifnet *ifp;
@@ -784,7 +785,8 @@ mlx5e_tx_notify_hw(struct mlx5e_sq *sq, 
                wmb();
 
        } else {
-               mlx5_write64(wqe, sq->uar.map + ofst, NULL);
+               mlx5_write64(wqe, sq->uar.map + ofst,
+                   MLX5_GET_DOORBELL_LOCK(&sq->priv->doorbell_lock));
        }
 
        sq->bf_offset ^= sq->bf_buf_size;

Modified: head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c
==============================================================================
--- head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c    Fri Sep 16 11:40:45 2016        
(r305871)
+++ head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c    Fri Sep 16 11:45:35 2016        
(r305872)
@@ -2753,6 +2753,7 @@ mlx5e_priv_mtx_init(struct mlx5e_priv *p
        mtx_init(&priv->async_events_mtx, "mlx5async", MTX_NETWORK_LOCK, 
MTX_DEF);
        sx_init(&priv->state_lock, "mlx5state");
        callout_init_mtx(&priv->watchdog, &priv->async_events_mtx, 0);
+       MLX5_INIT_DOORBELL_LOCK(&priv->doorbell_lock);
 }
 
 static void
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