net/mlx4_core: Add ethernet backplane autoneg device capability

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 8 insertions, 2 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 6fd9b8581e95..72289ef5ebbe 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -140,7 +140,8 @@ static void dump_dev_cap_flags2(struct mlx4_dev *dev, u64 flags)
                 [11] = "MAD DEMUX (Secure-Host) support",
                 [12] = "Large cache line (>64B) CQE stride support",
                 [13] = "Large cache line (>64B) EQE stride support",
-                [14] = "Ethernet protocol control support"
+                [14] = "Ethernet protocol control support",
+                [15] = "Ethernet Backplane autoneg support"
         };
         int i;
 
@@ -575,6 +576,7 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 #define QUERY_DEV_CAP_BMME_FLAGS_OFFSET         0x94
 #define QUERY_DEV_CAP_RSVD_LKEY_OFFSET          0x98
 #define QUERY_DEV_CAP_MAX_ICM_SZ_OFFSET         0xa0
+#define QUERY_DEV_CAP_ETH_BACKPL_OFFSET         0x9c
 #define QUERY_DEV_CAP_FW_REASSIGN_MAC           0x9d
 #define QUERY_DEV_CAP_VXLAN                     0x9e
 #define QUERY_DEV_CAP_MAD_DEMUX_OFFSET          0xb0
@@ -749,6 +751,9 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
                  QUERY_DEV_CAP_BMME_FLAGS_OFFSET);
         MLX4_GET(dev_cap->reserved_lkey, outbox,
                  QUERY_DEV_CAP_RSVD_LKEY_OFFSET);
+        MLX4_GET(field32, outbox, QUERY_DEV_CAP_ETH_BACKPL_OFFSET);
+        if (field32 & (1 << 0))
+                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_ETH_BACKPL_AN_REP;
         MLX4_GET(field, outbox, QUERY_DEV_CAP_FW_REASSIGN_MAC);
         if (field & 1<<6)
                 dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN;
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 181cd9fc90f2..e4c136ebe79b 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -187,7 +187,8 @@ enum {
         MLX4_DEV_CAP_FLAG2_MAD_DEMUX            = 1LL <<  11,
         MLX4_DEV_CAP_FLAG2_CQE_STRIDE           = 1LL <<  12,
         MLX4_DEV_CAP_FLAG2_EQE_STRIDE           = 1LL <<  13,
-        MLX4_DEV_CAP_FLAG2_ETH_PROT_CTRL        = 1LL <<  14
+        MLX4_DEV_CAP_FLAG2_ETH_PROT_CTRL        = 1LL <<  14,
+        MLX4_DEV_CAP_FLAG2_ETH_BACKPL_AN_REP    = 1LL <<  15
 };
 
 enum {