ixgbe: add 1g PHY support for 82599

Add support for 1G SFP+ PHY's to 82599.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

5 files changed, 52 insertions, 4 deletions

diff --git a/drivers/net/ixgbe/ixgbe_82599.c b/drivers/net/ixgbe/ixgbe_82599.c
index 976fd9e146c6..0ee175a289ee 100644
--- a/drivers/net/ixgbe/ixgbe_82599.c
+++ b/drivers/net/ixgbe/ixgbe_82599.c
@@ -206,6 +206,14 @@ static s32 ixgbe_get_link_capabilities_82599(struct ixgbe_hw *hw,
         s32 status = 0;
         u32 autoc = 0;
 
+        /* Determine 1G link capabilities off of SFP+ type */
+        if (hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core0 ||
+            hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core1) {
+                *speed = IXGBE_LINK_SPEED_1GB_FULL;
+                *negotiation = true;
+                goto out;
+        }
+
         /*
          * Determine link capabilities based on the stored value of AUTOC,
          * which represents EEPROM defaults.  If AUTOC value has not been
@@ -2087,6 +2095,7 @@ static u32 ixgbe_get_supported_physical_layer_82599(struct ixgbe_hw *hw)
         u32 pma_pmd_1g = autoc & IXGBE_AUTOC_1G_PMA_PMD_MASK;
         u16 ext_ability = 0;
         u8 comp_codes_10g = 0;
+        u8 comp_codes_1g = 0;
 
         hw->phy.ops.identify(hw);
 
@@ -2167,11 +2176,15 @@ sfp_check:
         case ixgbe_phy_sfp_intel:
         case ixgbe_phy_sfp_unknown:
                 hw->phy.ops.read_i2c_eeprom(hw,
+                      IXGBE_SFF_1GBE_COMP_CODES, &comp_codes_1g);
+                hw->phy.ops.read_i2c_eeprom(hw,
                       IXGBE_SFF_10GBE_COMP_CODES, &comp_codes_10g);
                 if (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE)
                         physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_SR;
                 else if (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE)
                         physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_LR;
+                else if (comp_codes_1g & IXGBE_SFF_1GBASET_CAPABLE)
+                        physical_layer = IXGBE_PHYSICAL_LAYER_1000BASE_T;
                 break;
         default:
                 break;
diff --git a/drivers/net/ixgbe/ixgbe_ethtool.c b/drivers/net/ixgbe/ixgbe_ethtool.c
index 7d2e5ea2deba..b50b5ea4cf83 100644
--- a/drivers/net/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ixgbe/ixgbe_ethtool.c
@@ -234,6 +234,13 @@ static int ixgbe_get_settings(struct net_device *netdev,
                 case ixgbe_sfp_type_not_present:
                         ecmd->port = PORT_NONE;
                         break;
+                case ixgbe_sfp_type_1g_cu_core0:
+                case ixgbe_sfp_type_1g_cu_core1:
+                        ecmd->port = PORT_TP;
+                        ecmd->supported = SUPPORTED_TP;
+                        ecmd->advertising = (ADVERTISED_1000baseT_Full |
+                                             ADVERTISED_TP);
+                        break;
                 case ixgbe_sfp_type_unknown:
                 default:
                         ecmd->port = PORT_OTHER;
diff --git a/drivers/net/ixgbe/ixgbe_phy.c b/drivers/net/ixgbe/ixgbe_phy.c
index 48325a5beff2..6c0d42e33f21 100644
--- a/drivers/net/ixgbe/ixgbe_phy.c
+++ b/drivers/net/ixgbe/ixgbe_phy.c
@@ -577,6 +577,8 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
                  * 6    SFP_SR/LR_CORE1 - 82599-specific
                  * 7    SFP_act_lmt_DA_CORE0 - 82599-specific
                  * 8    SFP_act_lmt_DA_CORE1 - 82599-specific
+                 * 9    SFP_1g_cu_CORE0 - 82599-specific
+                 * 10   SFP_1g_cu_CORE1 - 82599-specific
                  */
                 if (hw->mac.type == ixgbe_mac_82598EB) {
                         if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE)
@@ -625,6 +627,13 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
                                 else
                                         hw->phy.sfp_type =
                                                       ixgbe_sfp_type_srlr_core1;
+                        else if (comp_codes_1g & IXGBE_SFF_1GBASET_CAPABLE)
+                                if (hw->bus.lan_id == 0)
+                                        hw->phy.sfp_type =
+                                                ixgbe_sfp_type_1g_cu_core0;
+                                else
+                                        hw->phy.sfp_type =
+                                                ixgbe_sfp_type_1g_cu_core1;
                         else
                                 hw->phy.sfp_type = ixgbe_sfp_type_unknown;
                 }
@@ -696,8 +705,10 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
                         goto out;
                 }
 
-                /* 1G SFP modules are not supported */
-                if (comp_codes_10g == 0) {
+                /* Verify supported 1G SFP modules */
+                if (comp_codes_10g == 0 &&
+                    !(hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core1 ||
+                      hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core0)) {
                         hw->phy.type = ixgbe_phy_sfp_unsupported;
                         status = IXGBE_ERR_SFP_NOT_SUPPORTED;
                         goto out;
@@ -711,7 +722,9 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
 
                 /* This is guaranteed to be 82599, no need to check for NULL */
                 hw->mac.ops.get_device_caps(hw, &enforce_sfp);
-                if (!(enforce_sfp & IXGBE_DEVICE_CAPS_ALLOW_ANY_SFP)) {
+                if (!(enforce_sfp & IXGBE_DEVICE_CAPS_ALLOW_ANY_SFP) &&
+                    !((hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core0) ||
+                      (hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core1))) {
                         /* Make sure we're a supported PHY type */
                         if (hw->phy.type == ixgbe_phy_sfp_intel) {
                                 status = 0;
@@ -742,6 +755,7 @@ s32 ixgbe_get_sfp_init_sequence_offsets(struct ixgbe_hw *hw,
                                         u16 *data_offset)
 {
         u16 sfp_id;
+        u16 sfp_type = hw->phy.sfp_type;
 
         if (hw->phy.sfp_type == ixgbe_sfp_type_unknown)
                 return IXGBE_ERR_SFP_NOT_SUPPORTED;
@@ -753,6 +767,17 @@ s32 ixgbe_get_sfp_init_sequence_offsets(struct ixgbe_hw *hw,
             (hw->phy.sfp_type == ixgbe_sfp_type_da_cu))
                 return IXGBE_ERR_SFP_NOT_SUPPORTED;
 
+        /*
+         * Limiting active cables and 1G Phys must be initialized as
+         * SR modules
+         */
+        if (sfp_type == ixgbe_sfp_type_da_act_lmt_core0 ||
+            sfp_type == ixgbe_sfp_type_1g_cu_core0)
+                sfp_type = ixgbe_sfp_type_srlr_core0;
+        else if (sfp_type == ixgbe_sfp_type_da_act_lmt_core1 ||
+                 sfp_type == ixgbe_sfp_type_1g_cu_core1)
+                sfp_type = ixgbe_sfp_type_srlr_core1;
+
         /* Read offset to PHY init contents */
         hw->eeprom.ops.read(hw, IXGBE_PHY_INIT_OFFSET_NL, list_offset);
 
@@ -769,7 +794,7 @@ s32 ixgbe_get_sfp_init_sequence_offsets(struct ixgbe_hw *hw,
         hw->eeprom.ops.read(hw, *list_offset, &sfp_id);
 
         while (sfp_id != IXGBE_PHY_INIT_END_NL) {
-                if (sfp_id == hw->phy.sfp_type) {
+                if (sfp_id == sfp_type) {
                         (*list_offset)++;
                         hw->eeprom.ops.read(hw, *list_offset, data_offset);
                         if ((!*data_offset) || (*data_offset == 0xFFFF)) {
diff --git a/drivers/net/ixgbe/ixgbe_phy.h b/drivers/net/ixgbe/ixgbe_phy.h
index ef4ba834c593..fb3898f12fc5 100644
--- a/drivers/net/ixgbe/ixgbe_phy.h
+++ b/drivers/net/ixgbe/ixgbe_phy.h
@@ -48,6 +48,7 @@
 #define IXGBE_SFF_DA_SPEC_ACTIVE_LIMITING    0x4
 #define IXGBE_SFF_1GBASESX_CAPABLE           0x1
 #define IXGBE_SFF_1GBASELX_CAPABLE           0x2
+#define IXGBE_SFF_1GBASET_CAPABLE            0x8
 #define IXGBE_SFF_10GBASESR_CAPABLE          0x10
 #define IXGBE_SFF_10GBASELR_CAPABLE          0x20
 #define IXGBE_I2C_EEPROM_READ_MASK           0x100
diff --git a/drivers/net/ixgbe/ixgbe_type.h b/drivers/net/ixgbe/ixgbe_type.h
index cdd1998f18c7..9587d975d66c 100644
--- a/drivers/net/ixgbe/ixgbe_type.h
+++ b/drivers/net/ixgbe/ixgbe_type.h
@@ -2214,6 +2214,8 @@ enum ixgbe_sfp_type {
         ixgbe_sfp_type_srlr_core1 = 6,
         ixgbe_sfp_type_da_act_lmt_core0 = 7,
         ixgbe_sfp_type_da_act_lmt_core1 = 8,
+        ixgbe_sfp_type_1g_cu_core0 = 9,
+        ixgbe_sfp_type_1g_cu_core1 = 10,
         ixgbe_sfp_type_not_present = 0xFFFE,
         ixgbe_sfp_type_unknown = 0xFFFF
 };