mlx4_en: Using blue flame support

Doorbell is used according to usage of BlueFlame.
For Blue Flame to work in Ethernet mode QP number should have 0
at bits 6,7.
Allocating range of QPs accordingly.

Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/net/mlx4/en_netdev.c b/drivers/net/mlx4/en_netdev.c
index 08e680100db8..5762ebde4455 100644
--- a/drivers/net/mlx4/en_netdev.c
+++ b/drivers/net/mlx4/en_netdev.c
@@ -931,6 +931,13 @@ int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
 {
         struct mlx4_en_port_profile *prof = priv->prof;
         int i;
+        int base_tx_qpn, err;
+
+        err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &base_tx_qpn);
+        if (err) {
+                en_err(priv, "failed reserving range for TX rings\n");
+                return err;
+        }
 
         /* Create tx Rings */
         for (i = 0; i < priv->tx_ring_num; i++) {
@@ -938,7 +945,7 @@ int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
                                       prof->tx_ring_size, i, TX))
                         goto err;
 
-                if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
+                if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], base_tx_qpn + i,
                                            prof->tx_ring_size, TXBB_SIZE))
                         goto err;
         }
@@ -958,6 +965,7 @@ int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
 
 err:
         en_err(priv, "Failed to allocate NIC resources\n");
+        mlx4_qp_release_range(priv->mdev->dev, base_tx_qpn, priv->tx_ring_num);
         return -ENOMEM;
 }