net/ixgbe/base: update X550em_a backplane speed

Correct link flow for X550em_a backplane with ALEF.

Report the correct link capabilities:
   SKUs configured for 2.5G only support 2.5G.
   non-10G SKUs can only support 2.5 or 1G.

Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu@intel.com>

diff --git a/drivers/net/ixgbe/base/ixgbe_type.h b/drivers/net/ixgbe/base/ixgbe_type.h
index 13c520e..4982e03 100644 (file)
--- a/drivers/net/ixgbe/base/ixgbe_type.h
+++ b/drivers/net/ixgbe/base/ixgbe_type.h
@@ -4252,6 +4252,11 @@ struct ixgbe_hw {
 #define IXGBE_NW_MNG_IF_SEL_MDIO_ACT   (1u << 1)
 #define IXGBE_NW_MNG_IF_SEL_MDIO_IF_MODE       (1u << 2)
 #define IXGBE_NW_MNG_IF_SEL_EN_SHARED_MDIO     (1u << 13)
+#define IXGBE_NW_MNG_IF_SEL_PHY_SPEED_10M      (1u << 17)
+#define IXGBE_NW_MNG_IF_SEL_PHY_SPEED_100M     (1u << 18)
+#define IXGBE_NW_MNG_IF_SEL_PHY_SPEED_1G       (1u << 19)
+#define IXGBE_NW_MNG_IF_SEL_PHY_SPEED_2_5G     (1u << 20)
+#define IXGBE_NW_MNG_IF_SEL_PHY_SPEED_10G      (1u << 21)
 #define IXGBE_NW_MNG_IF_SEL_ENABLE_10_100M (1 << 23)
 #define IXGBE_NW_MNG_IF_SEL_INT_PHY_MODE (1 << 24)
 #define IXGBE_NW_MNG_IF_SEL_MDIO_PHY_ADD_SHIFT 3

diff --git a/drivers/net/ixgbe/base/ixgbe_x550.c b/drivers/net/ixgbe/base/ixgbe_x550.c
index 6f4dfd9..8c2479b 100644 (file)
--- a/drivers/net/ixgbe/base/ixgbe_x550.c
+++ b/drivers/net/ixgbe/base/ixgbe_x550.c
@@ -1887,6 +1887,20 @@ s32 ixgbe_get_link_capabilities_X550em(struct ixgbe_hw *hw,
                case ixgbe_phy_sgmii:
                        *speed = IXGBE_LINK_SPEED_1GB_FULL;
                        break;
+               case ixgbe_phy_x550em_kr:
+                       if (hw->mac.type == ixgbe_mac_X550EM_a) {
+                               /* check different backplane modes */
+                               if (hw->phy.nw_mng_if_sel &
+                                          IXGBE_NW_MNG_IF_SEL_PHY_SPEED_2_5G) {
+                                       *speed = IXGBE_LINK_SPEED_2_5GB_FULL;
+                                       break;
+                               } else if (hw->device_id ==
+                                                  IXGBE_DEV_ID_X550EM_A_KR_L) {
+                                       *speed = IXGBE_LINK_SPEED_1GB_FULL;
+                                       break;
+                               }
+                       }
+                       /* fall through */
                default:
                        *speed = IXGBE_LINK_SPEED_10GB_FULL |
                                 IXGBE_LINK_SPEED_1GB_FULL;
@@ -2109,18 +2123,25 @@ STATIC s32 ixgbe_setup_kr_speed_x550em(struct ixgbe_hw *hw,
                       IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
                       IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);
 
-       if (status)
-               return status;
+       if (hw->mac.type == ixgbe_mac_X550EM_a) {
+               /* Set lane mode  to KR auto negotiation */
+               status = hw->mac.ops.read_iosf_sb_reg(hw,
+                                   IXGBE_KRM_PMD_FLX_MASK_ST20(hw->bus.lan_id),
+                                   IXGBE_SB_IOSF_TARGET_KR_PHY, &reg_val);
 
-       reg_val &= ~IXGBE_KRM_PMD_FLX_MASK_ST20_SPEED_MASK;
-       reg_val |= IXGBE_KRM_PMD_FLX_MASK_ST20_SPEED_AN;
-       reg_val |= IXGBE_KRM_PMD_FLX_MASK_ST20_AN_EN;
-       reg_val &= ~IXGBE_KRM_PMD_FLX_MASK_ST20_AN37_EN;
-       reg_val &= ~IXGBE_KRM_PMD_FLX_MASK_ST20_SGMII_EN;
+               if (status)
+                       return status;
 
-       status = hw->mac.ops.write_iosf_sb_reg(hw,
+               reg_val &= ~IXGBE_KRM_PMD_FLX_MASK_ST20_SPEED_MASK;
+               reg_val |= IXGBE_KRM_PMD_FLX_MASK_ST20_SPEED_AN;
+               reg_val |= IXGBE_KRM_PMD_FLX_MASK_ST20_AN_EN;
+               reg_val &= ~IXGBE_KRM_PMD_FLX_MASK_ST20_AN37_EN;
+               reg_val &= ~IXGBE_KRM_PMD_FLX_MASK_ST20_SGMII_EN;
+
+               status = hw->mac.ops.write_iosf_sb_reg(hw,
                                    IXGBE_KRM_PMD_FLX_MASK_ST20(hw->bus.lan_id),
                                    IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);
+       }
 
        return ixgbe_restart_an_internal_phy_x550em(hw);
 }