IB/mlx5: Add support for 50Gbps per lane link modes

Driver now supports new link modes: 50Gbps per lane support for
50G/100G/200G. This patch reads the correct field (legacy vs. extended)
based on a FW indication bit, and adds a translation function (link
modes to IB width and speed) to the new link modes.

Signed-off-by: Aya Levin <ayal@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 3677c00..581ae11 100644 (file)
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -331,8 +331,8 @@ out:
        spin_unlock(&port->mp.mpi_lock);
 }
 
-static int translate_eth_proto_oper(u32 eth_proto_oper, u8 *active_speed,
-                                   u8 *active_width)
+static int translate_eth_legacy_proto_oper(u32 eth_proto_oper, u8 *active_speed,
+                                          u8 *active_width)
 {
        switch (eth_proto_oper) {
        case MLX5E_PROT_MASK(MLX5E_1000BASE_CX_SGMII):
@@ -389,6 +389,61 @@ static int translate_eth_proto_oper(u32 eth_proto_oper, u8 *active_speed,
        return 0;
 }
 
+static int translate_eth_ext_proto_oper(u32 eth_proto_oper, u8 *active_speed,
+                                       u8 *active_width)
+{
+       switch (eth_proto_oper) {
+       case MLX5E_PROT_MASK(MLX5E_SGMII_100M):
+       case MLX5E_PROT_MASK(MLX5E_1000BASE_X_SGMII):
+               *active_width = IB_WIDTH_1X;
+               *active_speed = IB_SPEED_SDR;
+               break;
+       case MLX5E_PROT_MASK(MLX5E_5GBASE_R):
+               *active_width = IB_WIDTH_1X;
+               *active_speed = IB_SPEED_DDR;
+               break;
+       case MLX5E_PROT_MASK(MLX5E_10GBASE_XFI_XAUI_1):
+               *active_width = IB_WIDTH_1X;
+               *active_speed = IB_SPEED_QDR;
+               break;
+       case MLX5E_PROT_MASK(MLX5E_40GBASE_XLAUI_4_XLPPI_4):
+               *active_width = IB_WIDTH_4X;
+               *active_speed = IB_SPEED_QDR;
+               break;
+       case MLX5E_PROT_MASK(MLX5E_25GAUI_1_25GBASE_CR_KR):
+               *active_width = IB_WIDTH_1X;
+               *active_speed = IB_SPEED_EDR;
+               break;
+       case MLX5E_PROT_MASK(MLX5E_50GAUI_2_LAUI_2_50GBASE_CR2_KR2):
+       case MLX5E_PROT_MASK(MLX5E_50GAUI_1_LAUI_1_50GBASE_CR_KR):
+               *active_width = IB_WIDTH_1X;
+               *active_speed = IB_SPEED_HDR;
+               break;
+       case MLX5E_PROT_MASK(MLX5E_100GAUI_2_100GBASE_CR2_KR2):
+               *active_width = IB_WIDTH_2X;
+               *active_speed = IB_SPEED_HDR;
+               break;
+       case MLX5E_PROT_MASK(MLX5E_200GAUI_4_200GBASE_CR4_KR4):
+               *active_width = IB_WIDTH_4X;
+               *active_speed = IB_SPEED_HDR;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int translate_eth_proto_oper(u32 eth_proto_oper, u8 *active_speed,
+                                   u8 *active_width, bool ext)
+{
+       return ext ?
+               translate_eth_ext_proto_oper(eth_proto_oper, active_speed,
+                                            active_width) :
+               translate_eth_legacy_proto_oper(eth_proto_oper, active_speed,
+                                               active_width);
+}
+
 static int mlx5_query_port_roce(struct ib_device *device, u8 port_num,
                                struct ib_port_attr *props)
 {
@@ -401,6 +456,7 @@ static int mlx5_query_port_roce(struct ib_device *device, u8 port_num,
        u16 qkey_viol_cntr;
        u32 eth_prot_oper;
        u8 mdev_port_num;
+       bool ext;
        int err;
 
        mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num);
@@ -421,14 +477,14 @@ static int mlx5_query_port_roce(struct ib_device *device, u8 port_num,
                                   mdev_port_num);
        if (err)
                goto out;
-       eth_prot_oper = MLX5_GET_ETH_PROTO(ptys_reg, out, false,
-                                          eth_proto_oper);
+       ext = MLX5_CAP_PCAM_FEATURE(dev->mdev, ptys_extended_ethernet);
+       eth_prot_oper = MLX5_GET_ETH_PROTO(ptys_reg, out, ext, eth_proto_oper);
 
        props->active_width     = IB_WIDTH_4X;
        props->active_speed     = IB_SPEED_QDR;
 
        translate_eth_proto_oper(eth_prot_oper, &props->active_speed,
-                                &props->active_width);
+                                &props->active_width, ext);
 
        props->port_cap_flags |= IB_PORT_CM_SUP;
        props->ip_gids = true;