ixgbe: Add support for SFPs with retimer
[cascardo/linux.git] / drivers / net / ethernet / intel / ixgbe / ixgbe_x550.c
index 0d6cbb0..a9d86b3 100644 (file)
@@ -273,6 +273,12 @@ out:
 static s32 ixgbe_identify_phy_x550em(struct ixgbe_hw *hw)
 {
        switch (hw->device_id) {
+       case IXGBE_DEV_ID_X550EM_A_SFP:
+               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_module_generic(hw);
        case IXGBE_DEV_ID_X550EM_X_SFP:
                /* set up for CS4227 usage */
                hw->phy.phy_semaphore_mask = IXGBE_GSSR_SHARED_I2C_SM;
@@ -1362,6 +1368,117 @@ i2c_err:
        return status;
 }
 
+/**
+ * ixgbe_setup_mac_link_sfp_n - Setup internal PHY for native SFP
+ * @hw: pointer to hardware structure
+ *
+ * Configure the the integrated PHY for native SFP support.
+ */
+static s32
+ixgbe_setup_mac_link_sfp_n(struct ixgbe_hw *hw, ixgbe_link_speed speed,
+                          __always_unused bool autoneg_wait_to_complete)
+{
+       bool setup_linear = false;
+       u32 reg_phy_int;
+       s32 rc;
+
+       /* Check if SFP module is supported and linear */
+       rc = ixgbe_supported_sfp_modules_X550em(hw, &setup_linear);
+
+       /* If no SFP module present, then return success. Return success since
+        * SFP not present error is not excepted in the setup MAC link flow.
+        */
+       if (rc == IXGBE_ERR_SFP_NOT_PRESENT)
+               return 0;
+
+       if (!rc)
+               return rc;
+
+       /* Configure internal PHY for native SFI */
+       rc = hw->mac.ops.read_iosf_sb_reg(hw,
+                                         IXGBE_KRM_AN_CNTL_8(hw->bus.lan_id),
+                                         IXGBE_SB_IOSF_TARGET_KR_PHY,
+                                         &reg_phy_int);
+       if (rc)
+               return rc;
+
+       if (setup_linear) {
+               reg_phy_int &= ~IXGBE_KRM_AN_CNTL_8_LIMITING;
+               reg_phy_int |= IXGBE_KRM_AN_CNTL_8_LINEAR;
+       } else {
+               reg_phy_int |= IXGBE_KRM_AN_CNTL_8_LIMITING;
+               reg_phy_int &= ~IXGBE_KRM_AN_CNTL_8_LINEAR;
+       }
+
+       rc = hw->mac.ops.write_iosf_sb_reg(hw,
+                                          IXGBE_KRM_AN_CNTL_8(hw->bus.lan_id),
+                                          IXGBE_SB_IOSF_TARGET_KR_PHY,
+                                          reg_phy_int);
+       if (rc)
+               return rc;
+
+       /* Setup XFI/SFI internal link */
+       return ixgbe_setup_ixfi_x550em(hw, &speed);
+}
+
+/**
+ * ixgbe_setup_mac_link_sfp_x550a - Setup internal PHY for SFP
+ * @hw: pointer to hardware structure
+ *
+ * Configure the the integrated PHY for SFP support.
+ */
+static s32
+ixgbe_setup_mac_link_sfp_x550a(struct ixgbe_hw *hw, ixgbe_link_speed speed,
+                              __always_unused bool autoneg_wait_to_complete)
+{
+       u32 reg_slice, slice_offset;
+       bool setup_linear = false;
+       u16 reg_phy_ext;
+       s32 rc;
+
+       /* Check if SFP module is supported and linear */
+       rc = ixgbe_supported_sfp_modules_X550em(hw, &setup_linear);
+
+       /* If no SFP module present, then return success. Return success since
+        * SFP not present error is not excepted in the setup MAC link flow.
+        */
+       if (rc == IXGBE_ERR_SFP_NOT_PRESENT)
+               return 0;
+
+       if (!rc)
+               return rc;
+
+       /* Configure internal PHY for KR/KX. */
+       ixgbe_setup_kr_speed_x550em(hw, speed);
+
+       if (!hw->phy.mdio.prtad || hw->phy.mdio.prtad == 0xFFFF)
+               return IXGBE_ERR_PHY_ADDR_INVALID;
+
+       /* Get external PHY device id */
+       rc = hw->phy.ops.read_reg(hw, IXGBE_CS4227_GLOBAL_ID_MSB,
+                                 IXGBE_MDIO_ZERO_DEV_TYPE, &reg_phy_ext);
+       if (rc)
+               return rc;
+
+       /* When configuring quad port CS4223, the MAC instance is part
+        * of the slice offset.
+        */
+       if (reg_phy_ext == IXGBE_CS4223_PHY_ID)
+               slice_offset = (hw->bus.lan_id +
+                               (hw->bus.instance_id << 1)) << 12;
+       else
+               slice_offset = hw->bus.lan_id << 12;
+
+       /* Configure CS4227/CS4223 LINE side to proper mode. */
+       reg_slice = IXGBE_CS4227_LINE_SPARE24_LSB + slice_offset;
+       if (setup_linear)
+               reg_phy_ext = (IXGBE_CS4227_EDC_MODE_CX1 << 1) | 1;
+       else
+               reg_phy_ext = (IXGBE_CS4227_EDC_MODE_SR << 1) | 1;
+       return hw->phy.ops.write_reg(hw, reg_slice, IXGBE_MDIO_ZERO_DEV_TYPE,
+                                    reg_phy_ext);
+}
+
 /**
  * ixgbe_setup_mac_link_t_X550em - Sets the auto advertised link speed
  * @hw: pointer to hardware structure
@@ -1456,9 +1573,21 @@ static void ixgbe_init_mac_link_ops_X550em(struct ixgbe_hw *hw)
                mac->ops.disable_tx_laser = NULL;
                mac->ops.enable_tx_laser = NULL;
                mac->ops.flap_tx_laser = NULL;
-               mac->ops.setup_mac_link = ixgbe_setup_mac_link_sfp_x550em;
                mac->ops.setup_link = ixgbe_setup_mac_link_multispeed_fiber;
                mac->ops.setup_fc = ixgbe_setup_fc_x550em;
+               switch (hw->device_id) {
+               case IXGBE_DEV_ID_X550EM_A_SFP_N:
+                       mac->ops.setup_mac_link = ixgbe_setup_mac_link_sfp_n;
+                       break;
+               case IXGBE_DEV_ID_X550EM_A_SFP:
+                       mac->ops.setup_mac_link =
+                                               ixgbe_setup_mac_link_sfp_x550a;
+                       break;
+               default:
+                       mac->ops.setup_mac_link =
+                                               ixgbe_setup_mac_link_sfp_x550em;
+                       break;
+               }
                mac->ops.set_rate_select_speed =
                                        ixgbe_set_soft_rate_select_speed;
                break;
@@ -2253,6 +2382,7 @@ static enum ixgbe_media_type ixgbe_get_media_type_X550em(struct ixgbe_hw *hw)
                media_type = ixgbe_media_type_backplane;
                break;
        case IXGBE_DEV_ID_X550EM_X_SFP:
+       case IXGBE_DEV_ID_X550EM_A_SFP:
        case IXGBE_DEV_ID_X550EM_A_SFP_N:
                media_type = ixgbe_media_type_fiber;
                break;
@@ -2316,6 +2446,7 @@ static void ixgbe_set_mdio_speed(struct ixgbe_hw *hw)
 
        switch (hw->device_id) {
        case IXGBE_DEV_ID_X550EM_X_10G_T:
+       case IXGBE_DEV_ID_X550EM_A_SFP:
                /* Config MDIO clock speed before the first MDIO PHY access */
                hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
                hlreg0 &= ~IXGBE_HLREG0_MDCSPD;