net/ixgbe/base: configure DMA coalescing for 10Mb
[dpdk.git] / drivers / net / ixgbe / base / ixgbe_x550.c
index 5c09bfe..08886a7 100644 (file)
@@ -342,11 +342,10 @@ STATIC s32 ixgbe_read_phy_reg_mdi_22(struct ixgbe_hw *hw, u32 reg_addr,
        UNREFERENCED_1PARAMETER(dev_type);
 
        /* Setup and write the read command */
-       command = (reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT)  |
-               (reg_addr << IXGBE_MSCA_DEV_TYPE_SHIFT) |
-               (hw->phy.addr << IXGBE_MSCA_PHY_ADDR_SHIFT) |
-               IXGBE_MSCA_OLD_PROTOCOL | IXGBE_MSCA_READ |
-               IXGBE_MSCA_MDI_COMMAND;
+       command = (reg_addr << IXGBE_MSCA_DEV_TYPE_SHIFT) |
+                 (hw->phy.addr << IXGBE_MSCA_PHY_ADDR_SHIFT) |
+                 IXGBE_MSCA_OLD_PROTOCOL | IXGBE_MSCA_READ_AUTOINC |
+                 IXGBE_MSCA_MDI_COMMAND;
 
        IXGBE_WRITE_REG(hw, IXGBE_MSCA, command);
 
@@ -393,11 +392,10 @@ STATIC s32 ixgbe_write_phy_reg_mdi_22(struct ixgbe_hw *hw, u32 reg_addr,
        IXGBE_WRITE_REG(hw, IXGBE_MSRWD, (u32)phy_data);
 
        /* Setup and write the write command */
-       command = (reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT)  |
-               (reg_addr << IXGBE_MSCA_DEV_TYPE_SHIFT) |
-               (hw->phy.addr << IXGBE_MSCA_PHY_ADDR_SHIFT) |
-               IXGBE_MSCA_OLD_PROTOCOL | IXGBE_MSCA_WRITE |
-               IXGBE_MSCA_MDI_COMMAND;
+       command = (reg_addr << IXGBE_MSCA_DEV_TYPE_SHIFT) |
+                 (hw->phy.addr << IXGBE_MSCA_PHY_ADDR_SHIFT) |
+                 IXGBE_MSCA_OLD_PROTOCOL | IXGBE_MSCA_WRITE |
+                 IXGBE_MSCA_MDI_COMMAND;
 
        IXGBE_WRITE_REG(hw, IXGBE_MSCA, command);
 
@@ -422,43 +420,6 @@ STATIC s32 ixgbe_write_phy_reg_mdi_22(struct ixgbe_hw *hw, u32 reg_addr,
        return IXGBE_SUCCESS;
 }
 
-/**
- * ixgbe_identify_phy_1g - Get 1g PHY type based on device id
- * @hw: pointer to hardware structure
- *
- * Returns error code
- */
-STATIC s32 ixgbe_identify_phy_1g(struct ixgbe_hw *hw)
-{
-       u32 swfw_mask = hw->phy.phy_semaphore_mask;
-       u16 phy_id_high;
-       u16 phy_id_low;
-       s32 rc;
-
-       rc = hw->mac.ops.acquire_swfw_sync(hw, swfw_mask);
-       if (rc)
-               return rc;
-
-       rc = ixgbe_read_phy_reg_mdi_22(hw, IXGBE_MDIO_PHY_ID_HIGH, 0,
-                                      &phy_id_high);
-       if (rc)
-               goto rel_out;
-
-       rc = ixgbe_read_phy_reg_mdi_22(hw, IXGBE_MDIO_PHY_ID_LOW, 0,
-                                      &phy_id_low);
-       if (rc)
-               goto rel_out;
-
-       hw->phy.id = (u32)phy_id_high << 16;
-       hw->phy.id |= phy_id_low & IXGBE_PHY_REVISION_MASK;
-       hw->phy.revision = (u32)phy_id_low & ~IXGBE_PHY_REVISION_MASK;
-
-rel_out:
-       hw->mac.ops.release_swfw_sync(hw, swfw_mask);
-
-       return rc;
-}
-
 /**
  * ixgbe_identify_phy_x550em - Get PHY type based on device id
  * @hw: pointer to hardware structure
@@ -498,18 +459,11 @@ STATIC s32 ixgbe_identify_phy_x550em(struct ixgbe_hw *hw)
                hw->phy.ops.read_reg = ixgbe_read_phy_reg_x550a;
                hw->phy.ops.write_reg = ixgbe_write_phy_reg_x550a;
        /* Fallthrough to ixgbe_identify_phy_generic */
+       case IXGBE_DEV_ID_X550EM_A_1G_T:
+       case IXGBE_DEV_ID_X550EM_A_1G_T_L:
        case IXGBE_DEV_ID_X550EM_X_1G_T:
        case IXGBE_DEV_ID_X550EM_X_10G_T:
                return ixgbe_identify_phy_generic(hw);
-       case IXGBE_DEV_ID_X550EM_A_1G_T:
-       case IXGBE_DEV_ID_X550EM_A_1G_T_L:
-               hw->phy.ops.read_reg = ixgbe_read_phy_reg_x550a;
-               hw->phy.ops.write_reg = ixgbe_write_phy_reg_x550a;
-               if (hw->bus.lan_id)
-                       hw->phy.phy_semaphore_mask |= IXGBE_GSSR_PHY1_SM;
-               else
-                       hw->phy.phy_semaphore_mask |= IXGBE_GSSR_PHY0_SM;
-               return ixgbe_identify_phy_1g(hw);
        default:
                break;
        }
@@ -604,7 +558,6 @@ s32 ixgbe_init_ops_X550EM(struct ixgbe_hw *hw)
        struct ixgbe_mac_info *mac = &hw->mac;
        struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
        struct ixgbe_phy_info *phy = &hw->phy;
-       struct ixgbe_link_info *link = &hw->link;
        s32 ret_val;
 
        DEBUGFUNC("ixgbe_init_ops_X550EM");
@@ -640,25 +593,6 @@ s32 ixgbe_init_ops_X550EM(struct ixgbe_hw *hw)
        hw->bus.type = ixgbe_bus_type_internal;
        mac->ops.get_bus_info = ixgbe_get_bus_info_X550em;
 
-       if (hw->mac.type == ixgbe_mac_X550EM_x) {
-               mac->ops.read_iosf_sb_reg = ixgbe_read_iosf_sb_reg_x550;
-               mac->ops.write_iosf_sb_reg = ixgbe_write_iosf_sb_reg_x550;
-               mac->ops.acquire_swfw_sync = ixgbe_acquire_swfw_sync_X550em;
-               mac->ops.release_swfw_sync = ixgbe_release_swfw_sync_X550em;
-               link->ops.read_link = ixgbe_read_i2c_combined_generic;
-               link->ops.read_link_unlocked =
-                               ixgbe_read_i2c_combined_generic_unlocked;
-               link->ops.write_link = ixgbe_write_i2c_combined_generic;
-               link->ops.write_link_unlocked =
-                               ixgbe_write_i2c_combined_generic_unlocked;
-               link->addr = IXGBE_CS4227;
-       }
-       if (hw->mac.type == ixgbe_mac_X550EM_a) {
-               mac->ops.read_iosf_sb_reg = ixgbe_read_iosf_sb_reg_x550;
-               mac->ops.write_iosf_sb_reg = ixgbe_write_iosf_sb_reg_x550;
-               mac->ops.acquire_swfw_sync = ixgbe_acquire_swfw_sync_X550a;
-               mac->ops.release_swfw_sync = ixgbe_release_swfw_sync_X550a;
-       }
 
        mac->ops.get_media_type = ixgbe_get_media_type_X550em;
        mac->ops.setup_sfp = ixgbe_setup_sfp_modules_X550em;
@@ -669,10 +603,6 @@ s32 ixgbe_init_ops_X550EM(struct ixgbe_hw *hw)
 
        if (mac->ops.get_media_type(hw) == ixgbe_media_type_copper)
                mac->ops.setup_fc = ixgbe_setup_fc_generic;
-       else if (hw->mac.type == ixgbe_mac_X550EM_a) {
-               mac->ops.setup_fc = ixgbe_setup_fc_x550a;
-               mac->ops.fc_autoneg = ixgbe_fc_autoneg_x550a;
-       }
        else
                mac->ops.setup_fc = ixgbe_setup_fc_X550em;
 
@@ -705,6 +635,76 @@ s32 ixgbe_init_ops_X550EM(struct ixgbe_hw *hw)
        return ret_val;
 }
 
+/**
+*  ixgbe_init_ops_X550EM_a - Inits func ptrs and MAC type
+*  @hw: pointer to hardware structure
+*
+*  Initialize the function pointers and for MAC type X550EM_a.
+*  Does not touch the hardware.
+**/
+s32 ixgbe_init_ops_X550EM_a(struct ixgbe_hw *hw)
+{
+       struct ixgbe_mac_info *mac = &hw->mac;
+       s32 ret_val;
+
+       DEBUGFUNC("ixgbe_init_ops_X550EM_a");
+
+       /* Start with generic X550EM init */
+       ret_val = ixgbe_init_ops_X550EM(hw);
+
+       mac->ops.read_iosf_sb_reg = ixgbe_read_iosf_sb_reg_x550;
+       mac->ops.write_iosf_sb_reg = ixgbe_write_iosf_sb_reg_x550;
+       mac->ops.acquire_swfw_sync = ixgbe_acquire_swfw_sync_X550a;
+       mac->ops.release_swfw_sync = ixgbe_release_swfw_sync_X550a;
+
+       switch (mac->ops.get_media_type(hw)) {
+       case ixgbe_media_type_fiber:
+               mac->ops.setup_fc = ixgbe_setup_fc_fiber_x550em_a;
+               mac->ops.fc_autoneg = ixgbe_fc_autoneg_fiber_x550em_a;
+               break;
+       case ixgbe_media_type_backplane:
+               mac->ops.fc_autoneg = ixgbe_fc_autoneg_backplane_x550em_a;
+               mac->ops.setup_fc = ixgbe_setup_fc_backplane_x550em_a;
+               break;
+       default:
+               break;
+       }
+
+       return ret_val;
+}
+
+/**
+*  ixgbe_init_ops_X550EM_x - Inits func ptrs and MAC type
+*  @hw: pointer to hardware structure
+*
+*  Initialize the function pointers and for MAC type X550EM_x.
+*  Does not touch the hardware.
+**/
+s32 ixgbe_init_ops_X550EM_x(struct ixgbe_hw *hw)
+{
+       struct ixgbe_mac_info *mac = &hw->mac;
+       struct ixgbe_link_info *link = &hw->link;
+       s32 ret_val;
+
+       DEBUGFUNC("ixgbe_init_ops_X550EM_x");
+
+       /* Start with generic X550EM init */
+       ret_val = ixgbe_init_ops_X550EM(hw);
+
+       mac->ops.read_iosf_sb_reg = ixgbe_read_iosf_sb_reg_x550;
+       mac->ops.write_iosf_sb_reg = ixgbe_write_iosf_sb_reg_x550;
+       mac->ops.acquire_swfw_sync = ixgbe_acquire_swfw_sync_X550em;
+       mac->ops.release_swfw_sync = ixgbe_release_swfw_sync_X550em;
+       link->ops.read_link = ixgbe_read_i2c_combined_generic;
+       link->ops.read_link_unlocked = ixgbe_read_i2c_combined_generic_unlocked;
+       link->ops.write_link = ixgbe_write_i2c_combined_generic;
+       link->ops.write_link_unlocked =
+                                     ixgbe_write_i2c_combined_generic_unlocked;
+       link->addr = IXGBE_CS4227;
+
+       return ret_val;
+}
+
 /**
  *  ixgbe_dmac_config_X550
  *  @hw: pointer to hardware structure
@@ -768,6 +768,7 @@ s32 ixgbe_dmac_config_tcs_X550(struct ixgbe_hw *hw)
 
        /* Configure DMA coalescing enabled */
        switch (hw->mac.dmac_config.link_speed) {
+       case IXGBE_LINK_SPEED_10_FULL:
        case IXGBE_LINK_SPEED_100_FULL:
                pb_headroom = IXGBE_DMACRXT_100M;
                break;
@@ -1509,7 +1510,6 @@ enum ixgbe_media_type ixgbe_get_media_type_X550em(struct ixgbe_hw *hw)
        case IXGBE_DEV_ID_X550EM_A_1G_T:
        case IXGBE_DEV_ID_X550EM_A_1G_T_L:
                media_type = ixgbe_media_type_copper;
-               hw->phy.type = ixgbe_phy_m88;
                break;
        default:
                media_type = ixgbe_media_type_unknown;
@@ -1606,12 +1606,11 @@ s32 ixgbe_setup_sfp_modules_X550em(struct ixgbe_hw *hw)
  * @hw: pointer to hardware structure
  */
 STATIC s32 ixgbe_setup_sgmii(struct ixgbe_hw *hw, ixgbe_link_speed speed,
-                            bool autoneg_wait_to_complete)
+                            bool autoneg_wait)
 {
        struct ixgbe_mac_info *mac = &hw->mac;
        u32 lval, sval;
        s32 rc;
-       UNREFERENCED_2PARAMETER(speed, autoneg_wait_to_complete);
 
        rc = mac->ops.read_iosf_sb_reg(hw,
                                       IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
@@ -1648,6 +1647,126 @@ STATIC s32 ixgbe_setup_sgmii(struct ixgbe_hw *hw, ixgbe_link_speed speed,
        rc = mac->ops.write_iosf_sb_reg(hw,
                                        IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
                                        IXGBE_SB_IOSF_TARGET_KR_PHY, lval);
+       if (rc)
+               return rc;
+
+       return hw->phy.ops.setup_link_speed(hw, speed, autoneg_wait);
+}
+
+ /**
+ * ixgbe_setup_sgmii_m88 - Set up link for sgmii with Marvell PHYs
+ * @hw: pointer to hardware structure
+ */
+STATIC s32 ixgbe_setup_sgmii_m88(struct ixgbe_hw *hw, ixgbe_link_speed speed,
+                                bool autoneg_wait)
+{
+       struct ixgbe_mac_info *mac = &hw->mac;
+       u32 lval, sval;
+       s32 rc;
+
+       rc = mac->ops.read_iosf_sb_reg(hw,
+                                      IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
+                                      IXGBE_SB_IOSF_TARGET_KR_PHY, &lval);
+       if (rc)
+               return rc;
+
+       lval &= ~IXGBE_KRM_LINK_CTRL_1_TETH_AN_ENABLE;
+       lval &= ~IXGBE_KRM_LINK_CTRL_1_TETH_FORCE_SPEED_MASK;
+       lval |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_SGMII_EN;
+       lval |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_CLAUSE_37_EN;
+       lval &= ~IXGBE_KRM_LINK_CTRL_1_TETH_FORCE_SPEED_1G;
+       rc = mac->ops.write_iosf_sb_reg(hw,
+                                       IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
+                                       IXGBE_SB_IOSF_TARGET_KR_PHY, lval);
+       if (rc)
+               return rc;
+
+       rc = mac->ops.read_iosf_sb_reg(hw,
+                                      IXGBE_KRM_SGMII_CTRL(hw->bus.lan_id),
+                                      IXGBE_SB_IOSF_TARGET_KR_PHY, &sval);
+       if (rc)
+               return rc;
+
+       sval &= ~IXGBE_KRM_SGMII_CTRL_MAC_TAR_FORCE_10_D;
+       sval &= ~IXGBE_KRM_SGMII_CTRL_MAC_TAR_FORCE_100_D;
+       rc = mac->ops.write_iosf_sb_reg(hw,
+                                       IXGBE_KRM_SGMII_CTRL(hw->bus.lan_id),
+                                       IXGBE_SB_IOSF_TARGET_KR_PHY, sval);
+       if (rc)
+               return rc;
+
+       lval |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_RESTART;
+       rc = mac->ops.write_iosf_sb_reg(hw,
+                                       IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
+                                       IXGBE_SB_IOSF_TARGET_KR_PHY, lval);
+       if (rc)
+               return rc;
+
+       return hw->phy.ops.setup_link_speed(hw, speed, autoneg_wait);
+}
+
+/**
+ * ixgbe_check_link_m88 - Poll PHY for link
+ * @hw: pointer to hardware structure
+ * @speed: pointer to link speed
+ * @link_up: true when link is up
+ * @link_up_wait: bool indicating whether to wait for link
+ *
+ * Check that both the MAC and PHY have link.
+ */
+static s32
+ixgbe_check_link_m88(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
+                    bool *link_up, bool link_up_wait)
+{
+       u16 reg;
+       s32 rc;
+       u32 i;
+
+       rc = ixgbe_check_mac_link_generic(hw, speed, link_up, link_up_wait);
+       if (rc || !*link_up)
+               return rc;
+
+       rc = hw->phy.ops.read_reg(hw, IXGBE_M88E1500_PHY_SPEC_STATUS, 0, &reg);
+
+       /* MAC link is up, so check external PHY link */
+       *link_up = !!(reg & IXGBE_M88E1500_PHY_SPEC_STATUS_LINK);
+
+       if (link_up_wait) {
+               for (i = 0; i < IXGBE_AUTO_NEG_TIME; i++) {
+                       if (!rc &&
+                           (reg & IXGBE_M88E1500_PHY_SPEC_STATUS_LINK)) {
+                               *link_up = true;
+                               break;
+                       }
+                       *link_up = false;
+                       msec_delay(100);
+                       rc = hw->phy.ops.read_reg(hw,
+                                                IXGBE_M88E1500_PHY_SPEC_STATUS,
+                                                0, &reg);
+               }
+       }
+
+#define M88_SPEED(x) (IXGBE_M88E1500_PHY_SPEC_STATUS_RESOLVED  | \
+                     IXGBE_M88E1500_PHY_SPEC_STATUS_DUPLEX     | \
+                     ((IXGBE_M88E1500_PHY_SPEC_STATUS_SPEED_##x) <<\
+                       IXGBE_M88E1500_PHY_SPEC_STATUS_SPEED_SHIFT))
+
+       reg &= M88_SPEED(MASK);
+       switch (reg) {
+       case M88_SPEED(10):
+               *speed = IXGBE_LINK_SPEED_10_FULL;
+               break;
+       case M88_SPEED(100):
+               *speed = IXGBE_LINK_SPEED_100_FULL;
+               break;
+       case M88_SPEED(1000):
+               *speed = IXGBE_LINK_SPEED_1GB_FULL;
+               break;
+       default:
+               *speed = IXGBE_LINK_SPEED_UNKNOWN;
+               break;
+       }
+#undef M88_SPEED
 
        return rc;
 }
@@ -1682,8 +1801,14 @@ void ixgbe_init_mac_link_ops_X550em(struct ixgbe_hw *hw)
                                ixgbe_setup_mac_link_sfp_x550em;
                break;
        case ixgbe_media_type_copper:
-               mac->ops.setup_link = ixgbe_setup_mac_link_t_X550em;
-               mac->ops.check_link = ixgbe_check_link_t_X550em;
+               if (hw->device_id == IXGBE_DEV_ID_X550EM_A_1G_T ||
+                   hw->device_id == IXGBE_DEV_ID_X550EM_A_1G_T_L) {
+                       mac->ops.setup_link = ixgbe_setup_sgmii_m88;
+                       mac->ops.check_link = ixgbe_check_link_m88;
+               } else {
+                       mac->ops.setup_link = ixgbe_setup_mac_link_t_X550em;
+                       mac->ops.check_link = ixgbe_check_link_t_X550em;
+               }
                break;
        case ixgbe_media_type_backplane:
                if (hw->device_id == IXGBE_DEV_ID_X550EM_A_SGMII ||
@@ -1731,8 +1856,9 @@ s32 ixgbe_get_link_capabilities_X550em(struct ixgbe_hw *hw,
        } else {
                switch (hw->phy.type) {
                case ixgbe_phy_m88:
-                       *speed = IXGBE_LINK_SPEED_100_FULL |
-                                IXGBE_LINK_SPEED_1GB_FULL;
+                       *speed = IXGBE_LINK_SPEED_1GB_FULL |
+                                IXGBE_LINK_SPEED_100_FULL |
+                                IXGBE_LINK_SPEED_10_FULL;
                        break;
                case ixgbe_phy_sgmii:
                        *speed = IXGBE_LINK_SPEED_1GB_FULL;
@@ -1965,171 +2091,267 @@ STATIC s32 ixgbe_setup_kr_speed_x550em(struct ixgbe_hw *hw,
 }
 
 /**
- * ixgbe_set_master_slave_mode - Set up PHY for master/slave mode
+ * ixgbe_setup_m88 - setup m88 PHY
  * @hw: pointer to hardware structure
- *
- * Must be called while holding the PHY semaphore and token
  */
-STATIC s32 ixgbe_set_master_slave_mode(struct ixgbe_hw *hw)
+STATIC s32 ixgbe_setup_m88(struct ixgbe_hw *hw)
 {
-       u16 phy_data;
+       u32 mask = hw->phy.phy_semaphore_mask | IXGBE_GSSR_TOKEN_SM;
+       u16 reg;
        s32 rc;
 
-       /* Resolve master/slave mode */
-       rc = ixgbe_read_phy_reg_mdi_22(hw, IXGBE_M88E1500_1000T_CTRL, 0,
-                                      &phy_data);
+       if (hw->phy.reset_disable || ixgbe_check_reset_blocked(hw))
+               return IXGBE_SUCCESS;
+
+       rc = hw->mac.ops.acquire_swfw_sync(hw, mask);
        if (rc)
                return rc;
 
-       /* load defaults for future use */
-       if (phy_data & IXGBE_M88E1500_1000T_CTRL_MS_ENABLE) {
-               if (phy_data & IXGBE_M88E1500_1000T_CTRL_MS_VALUE)
-                       hw->phy.original_ms_type = ixgbe_ms_force_master;
-               else
-                       hw->phy.original_ms_type = ixgbe_ms_force_slave;
+       rc = hw->phy.ops.read_reg_mdi(hw, IXGBE_M88E1500_COPPER_CTRL, 0, &reg);
+       if (rc)
+               goto out;
+       if (reg & IXGBE_M88E1500_COPPER_CTRL_POWER_DOWN) {
+               reg &= ~IXGBE_M88E1500_COPPER_CTRL_POWER_DOWN;
+               hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_COPPER_CTRL, 0,
+                                         reg);
+       }
+
+       rc = hw->phy.ops.read_reg_mdi(hw, IXGBE_M88E1500_MAC_CTRL_1, 0, &reg);
+       if (rc)
+               goto out;
+       if (reg & IXGBE_M88E1500_MAC_CTRL_1_POWER_DOWN) {
+               reg &= ~IXGBE_M88E1500_MAC_CTRL_1_POWER_DOWN;
+               hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_MAC_CTRL_1, 0,
+                                         reg);
+       }
+
+       rc = hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_PAGE_ADDR, 0, 2);
+       if (rc)
+               goto out;
+
+       rc = hw->phy.ops.read_reg_mdi(hw, IXGBE_M88E1500_MAC_SPEC_CTRL, 0,
+                                     &reg);
+       if (rc)
+               goto out;
+       if (reg & IXGBE_M88E1500_MAC_SPEC_CTRL_POWER_DOWN) {
+               reg &= ~IXGBE_M88E1500_MAC_SPEC_CTRL_POWER_DOWN;
+               hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_MAC_SPEC_CTRL, 0,
+                                         reg);
+               rc = hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_PAGE_ADDR, 0,
+                                              0);
+               if (rc)
+                       goto out;
+               rc = hw->phy.ops.read_reg_mdi(hw, IXGBE_M88E1500_COPPER_CTRL, 0,
+                                             &reg);
+               if (rc)
+                       goto out;
+               reg |= IXGBE_M88E1500_COPPER_CTRL_RESET;
+               hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_COPPER_CTRL, 0,
+                                         reg);
+               usec_delay(50);
        } else {
-               hw->phy.original_ms_type = ixgbe_ms_auto;
+               rc = hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_PAGE_ADDR, 0,
+                                              0);
+               if (rc)
+                       goto out;
        }
 
-       switch (hw->phy.ms_type) {
-       case ixgbe_ms_force_master:
-               phy_data |= IXGBE_M88E1500_1000T_CTRL_MS_ENABLE;
-               phy_data |= IXGBE_M88E1500_1000T_CTRL_MS_VALUE;
+       rc = hw->phy.ops.read_reg_mdi(hw, IXGBE_M88E1500_COPPER_CTRL, 0, &reg);
+       if (rc)
+               goto out;
+
+       if (!(reg & IXGBE_M88E1500_COPPER_CTRL_AN_EN)) {
+               reg |= IXGBE_M88E1500_COPPER_CTRL_AN_EN;
+               hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_COPPER_CTRL, 0,
+                                         reg);
+       }
+
+       rc = hw->phy.ops.read_reg_mdi(hw, IXGBE_M88E1500_1000T_CTRL, 0, &reg);
+       if (rc)
+               goto out;
+       reg &= ~IXGBE_M88E1500_1000T_CTRL_HALF_DUPLEX;
+       reg &= ~IXGBE_M88E1500_1000T_CTRL_FULL_DUPLEX;
+       if (hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_1GB_FULL)
+               reg |= IXGBE_M88E1500_1000T_CTRL_FULL_DUPLEX;
+       hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_1000T_CTRL, 0, reg);
+
+       rc = hw->phy.ops.read_reg_mdi(hw, IXGBE_M88E1500_COPPER_AN, 0, &reg);
+       if (rc)
+               goto out;
+       reg &= ~IXGBE_M88E1500_COPPER_AN_AS_PAUSE;
+       reg &= ~IXGBE_M88E1500_COPPER_AN_PAUSE;
+       reg &= ~IXGBE_M88E1500_COPPER_AN_T4;
+       reg &= ~IXGBE_M88E1500_COPPER_AN_100TX_FD;
+       reg &= ~IXGBE_M88E1500_COPPER_AN_100TX_HD;
+       reg &= ~IXGBE_M88E1500_COPPER_AN_10TX_FD;
+       reg &= ~IXGBE_M88E1500_COPPER_AN_10TX_HD;
+       switch (hw->fc.current_mode) {
+       case ixgbe_fc_full:
+               reg |= IXGBE_M88E1500_COPPER_AN_PAUSE;
                break;
-       case ixgbe_ms_force_slave:
-               phy_data |= IXGBE_M88E1500_1000T_CTRL_MS_ENABLE;
-               phy_data &= ~IXGBE_M88E1500_1000T_CTRL_MS_VALUE;
+       case ixgbe_fc_rx_pause:
+               reg |= IXGBE_M88E1500_COPPER_AN_PAUSE;
+               reg |= IXGBE_M88E1500_COPPER_AN_AS_PAUSE;
                break;
-       case ixgbe_ms_auto:
-               phy_data &= ~IXGBE_M88E1500_1000T_CTRL_MS_ENABLE;
+       case ixgbe_fc_tx_pause:
+               reg |= IXGBE_M88E1500_COPPER_AN_AS_PAUSE;
                break;
        default:
                break;
        }
 
-       return ixgbe_write_phy_reg_mdi_22(hw, IXGBE_M88E1500_1000T_CTRL, 0,
-                                         phy_data);
+       if (hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_100_FULL)
+               reg |= IXGBE_M88E1500_COPPER_AN_100TX_FD;
+       if (hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_10_FULL)
+               reg |= IXGBE_M88E1500_COPPER_AN_10TX_FD;
+       hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_COPPER_AN, 0, reg);
+
+       rc = hw->phy.ops.read_reg_mdi(hw, IXGBE_M88E1500_COPPER_CTRL, 0, &reg);
+       if (rc)
+               goto out;
+       reg |= IXGBE_M88E1500_COPPER_CTRL_RESTART_AN;
+       hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_COPPER_CTRL, 0, reg);
+
+
+       hw->mac.ops.release_swfw_sync(hw, mask);
+       return rc;
+
+out:
+       hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_PAGE_ADDR, 0, 0);
+       hw->mac.ops.release_swfw_sync(hw, mask);
+       return rc;
 }
 
 /**
- * ixgbe_reset_phy_m88_nolock - Reset m88 PHY without locking
+ * ixgbe_reset_phy_m88e1500 - Reset m88e1500 PHY
  * @hw: pointer to hardware structure
  *
- * Must be called while holding the PHY semaphore and token
+ * The PHY token must be held when calling this function.
  */
-STATIC s32 ixgbe_reset_phy_m88_nolock(struct ixgbe_hw *hw)
+static s32 ixgbe_reset_phy_m88e1500(struct ixgbe_hw *hw)
 {
+       u16 reg;
        s32 rc;
 
-       rc = ixgbe_write_phy_reg_mdi_22(hw, IXGBE_M88E1500_PAGE_ADDR, 0, 1);
+       rc = hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_PAGE_ADDR, 0, 0);
        if (rc)
                return rc;
 
-       rc = ixgbe_write_phy_reg_mdi_22(hw, IXGBE_M88E1500_FIBER_CTRL, 0,
-                                       IXGBE_M88E1500_FIBER_CTRL_RESET |
-                                       IXGBE_M88E1500_FIBER_CTRL_DUPLEX_FULL |
-                                       IXGBE_M88E1500_FIBER_CTRL_SPEED_MSB);
-       if (rc)
-               goto res_out;
-
-       rc = ixgbe_write_phy_reg_mdi_22(hw, IXGBE_M88E1500_PAGE_ADDR, 0, 18);
+       rc = hw->phy.ops.read_reg_mdi(hw, IXGBE_M88E1500_COPPER_CTRL, 0, &reg);
        if (rc)
-               goto res_out;
-
-       rc = ixgbe_write_phy_reg_mdi_22(hw, IXGBE_M88E1500_GEN_CTRL, 0,
-                                       IXGBE_M88E1500_GEN_CTRL_RESET |
-                                       IXGBE_M88E1500_GEN_CTRL_SGMII_COPPER);
-       if (rc)
-               goto res_out;
+               return rc;
 
-       rc = ixgbe_write_phy_reg_mdi_22(hw, IXGBE_M88E1500_PAGE_ADDR, 0, 0);
-       if (rc)
-               goto res_out;
+       reg |= IXGBE_M88E1500_COPPER_CTRL_RESET;
+       rc = hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_COPPER_CTRL, 0, reg);
 
-       rc = ixgbe_write_phy_reg_mdi_22(hw, IXGBE_M88E1500_COPPER_CTRL, 0,
-                                       IXGBE_M88E1500_COPPER_CTRL_RESET |
-                                       IXGBE_M88E1500_COPPER_CTRL_AN_EN |
-                                       IXGBE_M88E1500_COPPER_CTRL_RESTART_AN |
-                                       IXGBE_M88E1500_COPPER_CTRL_FULL_DUPLEX |
-                                       IXGBE_M88E1500_COPPER_CTRL_SPEED_MSB);
+       usec_delay(10);
 
-res_out:
-       ixgbe_write_phy_reg_mdi_22(hw, IXGBE_M88E1500_PAGE_ADDR, 0, 0);
        return rc;
 }
 
+/**
+ * ixgbe_reset_phy_m88e1543 - Reset m88e1543 PHY
+ * @hw: pointer to hardware structure
+ *
+ * The PHY token must be held when calling this function.
+ */
+static s32 ixgbe_reset_phy_m88e1543(struct ixgbe_hw *hw)
+{
+       return hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_PAGE_ADDR, 0, 0);
+}
+
 /**
  * ixgbe_reset_phy_m88 - Reset m88 PHY
  * @hw: pointer to hardware structure
  */
 STATIC s32 ixgbe_reset_phy_m88(struct ixgbe_hw *hw)
 {
-       u32 swfw_mask = hw->phy.phy_semaphore_mask;
+       u32 mask = hw->phy.phy_semaphore_mask | IXGBE_GSSR_TOKEN_SM;
+       u16 reg;
        s32 rc;
 
        if (hw->phy.reset_disable || ixgbe_check_reset_blocked(hw))
                return IXGBE_SUCCESS;
 
-       rc = hw->mac.ops.acquire_swfw_sync(hw, swfw_mask);
+       rc = hw->mac.ops.acquire_swfw_sync(hw, mask);
        if (rc)
                return rc;
 
-       rc = ixgbe_reset_phy_m88_nolock(hw);
+       switch (hw->phy.id) {
+       case IXGBE_M88E1500_E_PHY_ID:
+               rc = ixgbe_reset_phy_m88e1500(hw);
+               break;
+       case IXGBE_M88E1543_E_PHY_ID:
+               rc = ixgbe_reset_phy_m88e1543(hw);
+               break;
+       default:
+               rc = IXGBE_ERR_PHY;
+               break;
+       }
 
-       hw->mac.ops.release_swfw_sync(hw, swfw_mask);
-       return rc;
-}
+       rc = hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_PAGE_ADDR, 0, 1);
+       if (rc)
+               goto out;
 
-/**
- * ixgbe_setup_m88 - setup m88 PHY
- * @hw: pointer to hardware structure
- */
-STATIC s32 ixgbe_setup_m88(struct ixgbe_hw *hw)
-{
-       u32 swfw_mask = hw->phy.phy_semaphore_mask;
-       struct ixgbe_phy_info *phy = &hw->phy;
-       u16 phy_data;
-       s32 rc;
+       reg = IXGBE_M88E1500_FIBER_CTRL_RESET |
+             IXGBE_M88E1500_FIBER_CTRL_DUPLEX_FULL |
+             IXGBE_M88E1500_FIBER_CTRL_SPEED_MSB;
+       rc = hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_FIBER_CTRL, 0, reg);
+       if (rc)
+               goto out;
 
-       if (phy->reset_disable || ixgbe_check_reset_blocked(hw))
-               return IXGBE_SUCCESS;
+       rc = hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_PAGE_ADDR, 0, 18);
+       if (rc)
+               goto out;
 
-       rc = hw->mac.ops.acquire_swfw_sync(hw, swfw_mask);
+       reg = IXGBE_M88E1500_GEN_CTRL_RESET |
+             IXGBE_M88E1500_GEN_CTRL_MODE_SGMII_COPPER;
+       rc = hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_GEN_CTRL, 0, reg);
        if (rc)
-               return rc;
+               goto out;
 
-       rc = ixgbe_read_phy_reg_mdi_22(hw, IXGBE_M88E1500_PHY_SPEC_CTRL, 0,
-                                      &phy_data);
+       rc = hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_PAGE_ADDR, 0, 1);
        if (rc)
-               goto rel_out;
-
-       /* Enable downshift and setting it to X6 */
-       phy_data &= ~IXGBE_M88E1500_PSCR_DOWNSHIFT_ENABLE;
-       phy_data |= IXGBE_M88E1500_PSCR_DOWNSHIFT_6X;
-       phy_data |= IXGBE_M88E1500_PSCR_DOWNSHIFT_ENABLE;
-       rc = ixgbe_write_phy_reg_mdi_22(hw,
-                                       IXGBE_M88E1500_PHY_SPEC_CTRL, 0,
-                                       phy_data);
+               goto out;
+
+       reg = IXGBE_M88E1500_FIBER_CTRL_RESET |
+             IXGBE_M88E1500_FIBER_CTRL_AN_EN |
+             IXGBE_M88E1500_FIBER_CTRL_DUPLEX_FULL |
+             IXGBE_M88E1500_FIBER_CTRL_SPEED_MSB;
+       rc = hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_FIBER_CTRL, 0, reg);
        if (rc)
-               goto rel_out;
+               goto out;
 
-       ixgbe_write_phy_reg_mdi_22(hw, IXGBE_M88E1500_PAGE_ADDR, 0, 0);
+       rc = hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_PAGE_ADDR, 0, 0);
+       if (rc)
+               goto out;
 
-       /* Commit the changes */
-       rc = ixgbe_reset_phy_m88_nolock(hw);
-       if (rc) {
-               DEBUGOUT("Error committing the PHY changes\n");
-               goto rel_out;
-       }
+       reg = (IXGBE_M88E1500_MAC_CTRL_1_DWN_4X <<
+              IXGBE_M88E1500_MAC_CTRL_1_DWN_SHIFT) |
+             (IXGBE_M88E1500_MAC_CTRL_1_ED_TM <<
+              IXGBE_M88E1500_MAC_CTRL_1_ED_SHIFT) |
+             (IXGBE_M88E1500_MAC_CTRL_1_MDIX_AUTO <<
+              IXGBE_M88E1500_MAC_CTRL_1_MDIX_SHIFT);
+       rc = hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_MAC_CTRL_1, 0, reg);
+       if (rc)
+               goto out;
 
-       rc = ixgbe_set_master_slave_mode(hw);
+       reg = IXGBE_M88E1500_COPPER_CTRL_RESET |
+             IXGBE_M88E1500_COPPER_CTRL_AN_EN |
+             IXGBE_M88E1500_COPPER_CTRL_RESTART_AN |
+             IXGBE_M88E1500_COPPER_CTRL_FULL_DUPLEX |
+             IXGBE_M88E1500_COPPER_CTRL_SPEED_MSB;
+       rc = hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_COPPER_CTRL, 0, reg);
+       if (rc)
+               goto out;
 
-       hw->mac.ops.release_swfw_sync(hw, swfw_mask);
-       return rc;
+       hw->mac.ops.release_swfw_sync(hw, mask);
 
-rel_out:
-       ixgbe_write_phy_reg_mdi_22(hw, IXGBE_M88E1500_PAGE_ADDR, 0, 0);
-       hw->mac.ops.release_swfw_sync(hw, swfw_mask);
+       return ixgbe_setup_m88(hw);
+
+out:
+       hw->phy.ops.write_reg_mdi(hw, IXGBE_M88E1500_PAGE_ADDR, 0, 0);
+       hw->mac.ops.release_swfw_sync(hw, mask);
        return rc;
 }
 
@@ -2185,6 +2407,16 @@ s32 ixgbe_init_phy_ops_X550em(struct ixgbe_hw *hw)
                phy->ops.identify_sfp = ixgbe_identify_sfp_module_X550em;
        }
 
+       switch (hw->device_id) {
+       case IXGBE_DEV_ID_X550EM_A_1G_T:
+       case IXGBE_DEV_ID_X550EM_A_1G_T_L:
+               phy->ops.read_reg_mdi = ixgbe_read_phy_reg_mdi_22;
+               phy->ops.write_reg_mdi = ixgbe_write_phy_reg_mdi_22;
+               break;
+       default:
+               break;
+       }
+
        /* Identify the PHY or SFP module */
        ret_val = phy->ops.identify(hw);
        if (ret_val == IXGBE_ERR_SFP_NOT_SUPPORTED)
@@ -2228,8 +2460,6 @@ s32 ixgbe_init_phy_ops_X550em(struct ixgbe_hw *hw)
                break;
        case ixgbe_phy_m88:
                phy->ops.setup_link = ixgbe_setup_m88;
-               phy->ops.read_reg_mdi = ixgbe_read_phy_reg_mdi_22;
-               phy->ops.write_reg_mdi = ixgbe_write_phy_reg_mdi_22;
                phy->ops.reset = ixgbe_reset_phy_m88;
                break;
        default:
@@ -3731,12 +3961,12 @@ out:
 }
 
 /**
- *  ixgbe_fc_autoneg_x550a - Enable flow control IEEE clause 37
+ *  ixgbe_fc_autoneg_backplane_x550em_a - Enable flow control IEEE clause 37
  *  @hw: pointer to hardware structure
  *
  *  Enable flow control according to IEEE clause 37.
  **/
-void ixgbe_fc_autoneg_x550a(struct ixgbe_hw *hw)
+void ixgbe_fc_autoneg_backplane_x550em_a(struct ixgbe_hw *hw)
 {
        u32 link_s1, lp_an_page_low, an_cntl_1;
        s32 status = IXGBE_ERR_FC_NOT_NEGOTIATED;
@@ -3768,6 +3998,7 @@ void ixgbe_fc_autoneg_x550a(struct ixgbe_hw *hw)
        if (status != IXGBE_SUCCESS ||
            (link_s1 & IXGBE_KRM_LINK_S1_MAC_AN_COMPLETE) == 0) {
                DEBUGOUT("Auto-Negotiation did not complete\n");
+               status = IXGBE_ERR_FC_NOT_NEGOTIATED;
                goto out;
        }
 
@@ -3808,17 +4039,94 @@ out:
 }
 
 /**
- *  ixgbe_setup_fc_x550em - Set up flow control
+ *  ixgbe_fc_autoneg_fiber_x550em_a - Enable flow control IEEE clause 37
+ *  @hw: pointer to hardware structure
+ *
+ *  Enable flow control according to IEEE clause 37.
+ **/
+void ixgbe_fc_autoneg_fiber_x550em_a(struct ixgbe_hw *hw)
+{
+       u32 link_s1, pcs_an_lp, pcs_an;
+       s32 status = IXGBE_ERR_FC_NOT_NEGOTIATED;
+       ixgbe_link_speed speed;
+       bool link_up;
+
+       /* AN should have completed when the cable was plugged in.
+        * Look for reasons to bail out.  Bail out if:
+        * - FC autoneg is disabled, or if
+        * - link is not up.
+        */
+       if (hw->fc.disable_fc_autoneg) {
+               ERROR_REPORT1(IXGBE_ERROR_UNSUPPORTED,
+                            "Flow control autoneg is disabled");
+               goto out;
+       }
+
+       hw->mac.ops.check_link(hw, &speed, &link_up, false);
+       if (!link_up) {
+               ERROR_REPORT1(IXGBE_ERROR_SOFTWARE, "The link is down");
+               goto out;
+       }
+
+       /* Check if auto-negotiation has completed */
+       status = hw->mac.ops.read_iosf_sb_reg(hw,
+                                        IXGBE_KRM_LINK_S1(hw->bus.lan_id),
+                                        IXGBE_SB_IOSF_TARGET_KR_PHY, &link_s1);
+
+       if (status != IXGBE_SUCCESS ||
+           (link_s1 & IXGBE_KRM_LINK_S1_MAC_AN_COMPLETE) == 0) {
+               DEBUGOUT("Auto-Negotiation did not complete\n");
+               status = IXGBE_ERR_FC_NOT_NEGOTIATED;
+               goto out;
+       }
+
+       /* Determine advertised flow control */
+       status = hw->mac.ops.read_iosf_sb_reg(hw,
+                                         IXGBE_KRM_PCS_KX_AN(hw->bus.lan_id),
+                                         IXGBE_SB_IOSF_TARGET_KR_PHY, &pcs_an);
+
+       if (status != IXGBE_SUCCESS) {
+               DEBUGOUT("Auto-Negotiation did not complete\n");
+               goto out;
+       }
+
+       /* Determine link parter flow control */
+       status = hw->mac.ops.read_iosf_sb_reg(hw,
+                                 IXGBE_KRM_PCS_KX_AN_LP(hw->bus.lan_id),
+                                 IXGBE_SB_IOSF_TARGET_KR_PHY, &pcs_an_lp);
+
+       if (status != IXGBE_SUCCESS) {
+               DEBUGOUT("Auto-Negotiation did not complete\n");
+               goto out;
+       }
+
+       status = ixgbe_negotiate_fc(hw, pcs_an, pcs_an_lp,
+                                   IXGBE_KRM_PCS_KX_AN_SYM_PAUSE,
+                                   IXGBE_KRM_PCS_KX_AN_ASM_PAUSE,
+                                   IXGBE_KRM_PCS_KX_AN_LP_SYM_PAUSE,
+                                   IXGBE_KRM_PCS_KX_AN_LP_ASM_PAUSE);
+
+out:
+       if (status == IXGBE_SUCCESS) {
+               hw->fc.fc_was_autonegged = true;
+       } else {
+               hw->fc.fc_was_autonegged = false;
+               hw->fc.current_mode = hw->fc.requested_mode;
+       }
+}
+
+/**
+ *  ixgbe_setup_fc_backplane_x550em_a - Set up flow control
  *  @hw: pointer to hardware structure
  *
  *  Called at init time to set up flow control.
  **/
-s32 ixgbe_setup_fc_x550a(struct ixgbe_hw *hw)
+s32 ixgbe_setup_fc_backplane_x550em_a(struct ixgbe_hw *hw)
 {
        s32 status = IXGBE_SUCCESS;
        u32 an_cntl, link_ctrl = 0;
 
-       DEBUGFUNC("ixgbe_setup_fc_x550em");
+       DEBUGFUNC("ixgbe_setup_fc_backplane_x550em_a");
 
        /* Validate the requested mode */
        if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) {
@@ -3907,6 +4215,132 @@ s32 ixgbe_setup_fc_x550a(struct ixgbe_hw *hw)
        return status;
 }
 
+/**
+ *  ixgbe_setup_fc_fiber_x550em_a - Set up flow control
+ *  @hw: pointer to hardware structure
+ *
+ *  Called at init time to set up flow control.
+ **/
+s32 ixgbe_setup_fc_fiber_x550em_a(struct ixgbe_hw *hw)
+{
+       struct ixgbe_mac_info *mac = &hw->mac;
+       s32 rc = IXGBE_SUCCESS;
+       u32 an_cntl4, lctrl, pcs_an;
+
+       DEBUGFUNC("ixgbe_setup_fc_fiber_x550em_a");
+
+       /* Validate the requested mode */
+       if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) {
+               ERROR_REPORT1(IXGBE_ERROR_UNSUPPORTED,
+                             "ixgbe_fc_rx_pause not valid in strict IEEE mode\n");
+               return IXGBE_ERR_INVALID_LINK_SETTINGS;
+       }
+
+       /* Enable clause 37 auto-negotiation in KRM_LINK_CTRL_1 */
+       if (hw->fc.requested_mode == ixgbe_fc_default)
+               hw->fc.requested_mode = ixgbe_fc_full;
+
+       rc = mac->ops.read_iosf_sb_reg(hw,
+                                      IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
+                                      IXGBE_SB_IOSF_TARGET_KR_PHY, &lctrl);
+       if (rc)
+               return rc;
+
+       lctrl |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_ENABLE;
+       lctrl |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_CLAUSE_37_EN;
+
+       rc = mac->ops.write_iosf_sb_reg(hw,
+                                       IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
+                                       IXGBE_SB_IOSF_TARGET_KR_PHY, lctrl);
+       if (rc)
+               return rc;
+
+       /* Enable clause 37 over 73 in KRM_AN_CNTL_4 */
+       rc = mac->ops.read_iosf_sb_reg(hw,
+                                      IXGBE_KRM_AN_CNTL_4(hw->bus.lan_id),
+                                      IXGBE_SB_IOSF_TARGET_KR_PHY, &an_cntl4);
+       if (rc)
+               return rc;
+
+       an_cntl4 |= IXGBE_KRM_AN_CNTL_4_ECSR_AN37_OVER_73;
+
+       rc = mac->ops.write_iosf_sb_reg(hw,
+                                       IXGBE_KRM_AN_CNTL_4(hw->bus.lan_id),
+                                       IXGBE_SB_IOSF_TARGET_KR_PHY, an_cntl4);
+       if (rc)
+               return rc;
+
+       rc = hw->mac.ops.read_iosf_sb_reg(hw,
+                                         IXGBE_KRM_PCS_KX_AN(hw->bus.lan_id),
+                                         IXGBE_SB_IOSF_TARGET_KR_PHY, &pcs_an);
+
+       if (rc)
+               return rc;
+
+       /* The possible values of fc.requested_mode are:
+        * 0: Flow control is completely disabled
+        * 1: Rx flow control is enabled (we can receive pause frames,
+        *    but not send pause frames).
+        * 2: Tx flow control is enabled (we can send pause frames but
+        *    we do not support receiving pause frames).
+        * 3: Both Rx and Tx flow control (symmetric) are enabled.
+        * other: Invalid.
+        */
+       switch (hw->fc.requested_mode) {
+       case ixgbe_fc_none:
+               /* Flow control completely disabled by software override. */
+               pcs_an &= ~(IXGBE_KRM_AN_CNTL_1_SYM_PAUSE |
+                           IXGBE_KRM_AN_CNTL_1_ASM_PAUSE);
+               break;
+       case ixgbe_fc_tx_pause:
+               /* Tx Flow control is enabled, and Rx Flow control is
+                * disabled by software override.
+                */
+               pcs_an |= IXGBE_KRM_PCS_KX_AN_ASM_PAUSE;
+               pcs_an &= ~IXGBE_KRM_PCS_KX_AN_SYM_PAUSE;
+               break;
+       case ixgbe_fc_rx_pause:
+               /* Rx Flow control is enabled and Tx Flow control is
+                * disabled by software override. Since there really
+                * isn't a way to advertise that we are capable of RX
+                * Pause ONLY, we will advertise that we support both
+                * symmetric and asymmetric Rx PAUSE, as such we fall
+                * through to the fc_full statement.  Later, we will
+                * disable the adapter's ability to send PAUSE frames.
+                */
+       case ixgbe_fc_full:
+               /* Flow control (both Rx and Tx) is enabled by SW override. */
+               pcs_an |= IXGBE_KRM_PCS_KX_AN_SYM_PAUSE |
+                          IXGBE_KRM_PCS_KX_AN_ASM_PAUSE;
+               break;
+       default:
+               ERROR_REPORT1(IXGBE_ERROR_ARGUMENT,
+                             "Flow control param set incorrectly\n");
+               return IXGBE_ERR_CONFIG;
+       }
+
+       rc = hw->mac.ops.write_iosf_sb_reg(hw,
+                                          IXGBE_KRM_PCS_KX_AN(hw->bus.lan_id),
+                                          IXGBE_SB_IOSF_TARGET_KR_PHY, pcs_an);
+
+       /* Restart auto-negotiation. */
+       rc = hw->mac.ops.read_iosf_sb_reg(hw,
+                                         IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
+                                         IXGBE_SB_IOSF_TARGET_KR_PHY, &lctrl);
+
+       if (rc) {
+               DEBUGOUT("Auto-Negotiation did not complete\n");
+               return rc;
+       }
+
+       lctrl |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_RESTART;
+       rc = hw->mac.ops.write_iosf_sb_reg(hw,
+                                       IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
+                                       IXGBE_SB_IOSF_TARGET_KR_PHY, lctrl);
+
+       return rc;
+}
+
 /**
  * ixgbe_set_mux - Set mux for port 1 access with CS4227
  * @hw: pointer to hardware structure