net/mlx4_core: Add timestamping device capability

Add new device capability for timestamping support and query FW to retrieve it.

Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index ab470d9..f1e7097 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -130,7 +130,8 @@ static void dump_dev_cap_flags2(struct mlx4_dev *dev, u64 flags)
                [1] = "RSS Toeplitz Hash Function support",
                [2] = "RSS XOR Hash Function support",
                [3] = "Device manage flow steering support",
-               [4] = "Automatic mac reassignment support"
+               [4] = "Automatic MAC reassignment support",
+               [5] = "Time stamping support"
        };
        int i;
 
@@ -444,6 +445,7 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 #define QUERY_DEV_CAP_MAX_MSG_SZ_OFFSET                0x38
 #define QUERY_DEV_CAP_MAX_GID_OFFSET           0x3b
 #define QUERY_DEV_CAP_RATE_SUPPORT_OFFSET      0x3c
+#define QUERY_DEV_CAP_CQ_TS_SUPPORT_OFFSET     0x3e
 #define QUERY_DEV_CAP_MAX_PKEY_OFFSET          0x3f
 #define QUERY_DEV_CAP_EXT_FLAGS_OFFSET         0x40
 #define QUERY_DEV_CAP_FLAGS_OFFSET             0x44
@@ -560,6 +562,9 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
        dev_cap->fs_max_num_qp_per_entry = field;
        MLX4_GET(stat_rate, outbox, QUERY_DEV_CAP_RATE_SUPPORT_OFFSET);
        dev_cap->stat_rate_support = stat_rate;
+       MLX4_GET(field, outbox, QUERY_DEV_CAP_CQ_TS_SUPPORT_OFFSET);
+       if (field & 0x80)
+               dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_TS;
        MLX4_GET(ext_flags, outbox, QUERY_DEV_CAP_EXT_FLAGS_OFFSET);
        MLX4_GET(flags, outbox, QUERY_DEV_CAP_FLAGS_OFFSET);
        dev_cap->flags = flags | (u64)ext_flags << 32;

diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 1bc5a75..86ae260 100644 (file)
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -152,7 +152,8 @@ enum {
        MLX4_DEV_CAP_FLAG2_RSS_TOP              = 1LL <<  1,
        MLX4_DEV_CAP_FLAG2_RSS_XOR              = 1LL <<  2,
        MLX4_DEV_CAP_FLAG2_FS_EN                = 1LL <<  3,
-       MLX4_DEV_CAP_FLAGS2_REASSIGN_MAC_EN     = 1LL <<  4
+       MLX4_DEV_CAP_FLAGS2_REASSIGN_MAC_EN     = 1LL <<  4,
+       MLX4_DEV_CAP_FLAG2_TS                   = 1LL <<  5
 };
 
 enum {