ixgbe: add support for active DA cables

This patch adds support of active DA cables.  This is
renaming and adding some PHY type enumerations.

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>

6 files changed, 54 insertions, 14 deletions

diff --git a/drivers/net/ixgbe/ixgbe_82599.c b/drivers/net/ixgbe/ixgbe_82599.c
index dc197a4b0676..e9706eb8e4ff 100644
--- a/drivers/net/ixgbe/ixgbe_82599.c
+++ b/drivers/net/ixgbe/ixgbe_82599.c
@@ -2155,10 +2155,14 @@ sfp_check:
                 goto out;
 
         switch (hw->phy.type) {
-        case ixgbe_phy_tw_tyco:
-        case ixgbe_phy_tw_unknown:
+        case ixgbe_phy_sfp_passive_tyco:
+        case ixgbe_phy_sfp_passive_unknown:
                 physical_layer = IXGBE_PHYSICAL_LAYER_SFP_PLUS_CU;
                 break;
+        case ixgbe_phy_sfp_ftl_active:
+        case ixgbe_phy_sfp_active_unknown:
+                physical_layer = IXGBE_PHYSICAL_LAYER_SFP_ACTIVE_DA;
+                break;
         case ixgbe_phy_sfp_avago:
         case ixgbe_phy_sfp_ftl:
         case ixgbe_phy_sfp_intel:
diff --git a/drivers/net/ixgbe/ixgbe_ethtool.c b/drivers/net/ixgbe/ixgbe_ethtool.c
index 251767d9fe79..c50a7541ffec 100644
--- a/drivers/net/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ixgbe/ixgbe_ethtool.c
@@ -212,8 +212,8 @@ static int ixgbe_get_settings(struct net_device *netdev,
                 ecmd->port = PORT_FIBRE;
                 break;
         case ixgbe_phy_nl:
-        case ixgbe_phy_tw_tyco:
-        case ixgbe_phy_tw_unknown:
+        case ixgbe_phy_sfp_passive_tyco:
+        case ixgbe_phy_sfp_passive_unknown:
         case ixgbe_phy_sfp_ftl:
         case ixgbe_phy_sfp_avago:
         case ixgbe_phy_sfp_intel:
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index caf1114960ef..9551cbb7bf01 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -3118,8 +3118,10 @@ static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw)
         case ixgbe_phy_sfp_ftl:
         case ixgbe_phy_sfp_intel:
         case ixgbe_phy_sfp_unknown:
-        case ixgbe_phy_tw_tyco:
-        case ixgbe_phy_tw_unknown:
+        case ixgbe_phy_sfp_passive_tyco:
+        case ixgbe_phy_sfp_passive_unknown:
+        case ixgbe_phy_sfp_active_unknown:
+        case ixgbe_phy_sfp_ftl_active:
                 return true;
         default:
                 return false;
diff --git a/drivers/net/ixgbe/ixgbe_phy.c b/drivers/net/ixgbe/ixgbe_phy.c
index d6d5b843d625..22d21af14783 100644
--- a/drivers/net/ixgbe/ixgbe_phy.c
+++ b/drivers/net/ixgbe/ixgbe_phy.c
@@ -531,6 +531,7 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
         u8 comp_codes_10g = 0;
         u8 oui_bytes[3] = {0, 0, 0};
         u8 cable_tech = 0;
+        u8 cable_spec = 0;
         u16 enforce_sfp = 0;
 
         if (hw->mac.ops.get_media_type(hw) != ixgbe_media_type_fiber) {
@@ -580,14 +581,30 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
                         else
                                 hw->phy.sfp_type = ixgbe_sfp_type_unknown;
                 } else if (hw->mac.type == ixgbe_mac_82599EB) {
-                        if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE)
+                        if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE) {
                                 if (hw->bus.lan_id == 0)
                                         hw->phy.sfp_type =
                                                      ixgbe_sfp_type_da_cu_core0;
                                 else
                                         hw->phy.sfp_type =
                                                      ixgbe_sfp_type_da_cu_core1;
-                        else if (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE)
+                        } else if (cable_tech & IXGBE_SFF_DA_ACTIVE_CABLE) {
+                                hw->phy.ops.read_i2c_eeprom(
+                                                hw, IXGBE_SFF_CABLE_SPEC_COMP,
+                                                &cable_spec);
+                                if (cable_spec &
+                                    IXGBE_SFF_DA_SPEC_ACTIVE_LIMITING) {
+                                        if (hw->bus.lan_id == 0)
+                                                hw->phy.sfp_type =
+                                                ixgbe_sfp_type_da_act_lmt_core0;
+                                        else
+                                                hw->phy.sfp_type =
+                                                ixgbe_sfp_type_da_act_lmt_core1;
+                                } else {
+                                        hw->phy.sfp_type =
+                                                ixgbe_sfp_type_unknown;
+                                }
+                        } else if (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE)
                                 if (hw->bus.lan_id == 0)
                                         hw->phy.sfp_type =
                                                       ixgbe_sfp_type_srlr_core0;
@@ -637,10 +654,14 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
                         switch (vendor_oui) {
                         case IXGBE_SFF_VENDOR_OUI_TYCO:
                                 if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE)
-                                        hw->phy.type = ixgbe_phy_tw_tyco;
+                                        hw->phy.type =
+                                                ixgbe_phy_sfp_passive_tyco;
                                 break;
                         case IXGBE_SFF_VENDOR_OUI_FTL:
-                                hw->phy.type = ixgbe_phy_sfp_ftl;
+                                if (cable_tech & IXGBE_SFF_DA_ACTIVE_CABLE)
+                                        hw->phy.type = ixgbe_phy_sfp_ftl_active;
+                                else
+                                        hw->phy.type = ixgbe_phy_sfp_ftl;
                                 break;
                         case IXGBE_SFF_VENDOR_OUI_AVAGO:
                                 hw->phy.type = ixgbe_phy_sfp_avago;
@@ -650,7 +671,11 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
                                 break;
                         default:
                                 if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE)
-                                        hw->phy.type = ixgbe_phy_tw_unknown;
+                                        hw->phy.type =
+                                                ixgbe_phy_sfp_passive_unknown;
+                                else if (cable_tech & IXGBE_SFF_DA_ACTIVE_CABLE)
+                                        hw->phy.type =
+                                                ixgbe_phy_sfp_active_unknown;
                                 else
                                         hw->phy.type = ixgbe_phy_sfp_unknown;
                                 break;
@@ -658,7 +683,8 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
                 }
 
                 /* All passive DA cables are supported */
-                if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE) {
+                if (cable_tech & (IXGBE_SFF_DA_PASSIVE_CABLE |
+                    IXGBE_SFF_DA_ACTIVE_CABLE)) {
                         status = 0;
                         goto out;
                 }
diff --git a/drivers/net/ixgbe/ixgbe_phy.h b/drivers/net/ixgbe/ixgbe_phy.h
index 9cf5f3b4cc5d..c9c545941407 100644
--- a/drivers/net/ixgbe/ixgbe_phy.h
+++ b/drivers/net/ixgbe/ixgbe_phy.h
@@ -40,9 +40,12 @@
 #define IXGBE_SFF_1GBE_COMP_CODES    0x6
 #define IXGBE_SFF_10GBE_COMP_CODES   0x3
 #define IXGBE_SFF_CABLE_TECHNOLOGY   0x8
+#define IXGBE_SFF_CABLE_SPEC_COMP    0x3C
 
 /* Bitmasks */
 #define IXGBE_SFF_DA_PASSIVE_CABLE           0x4
+#define IXGBE_SFF_DA_ACTIVE_CABLE            0x8
+#define IXGBE_SFF_DA_SPEC_ACTIVE_LIMITING    0x4
 #define IXGBE_SFF_1GBASESX_CAPABLE           0x1
 #define IXGBE_SFF_1GBASELX_CAPABLE           0x2
 #define IXGBE_SFF_10GBASESR_CAPABLE          0x10
diff --git a/drivers/net/ixgbe/ixgbe_type.h b/drivers/net/ixgbe/ixgbe_type.h
index bd69196ff522..39b9be897439 100644
--- a/drivers/net/ixgbe/ixgbe_type.h
+++ b/drivers/net/ixgbe/ixgbe_type.h
@@ -2108,6 +2108,7 @@ typedef u32 ixgbe_physical_layer;
 #define IXGBE_PHYSICAL_LAYER_1000BASE_BX  0x0400
 #define IXGBE_PHYSICAL_LAYER_10GBASE_KR   0x0800
 #define IXGBE_PHYSICAL_LAYER_10GBASE_XAUI 0x1000
+#define IXGBE_PHYSICAL_LAYER_SFP_ACTIVE_DA 0x2000
 
 /* Software ATR hash keys */
 #define IXGBE_ATR_BUCKET_HASH_KEY    0xE214AD3D
@@ -2177,10 +2178,12 @@ enum ixgbe_phy_type {
         ixgbe_phy_qt,
         ixgbe_phy_xaui,
         ixgbe_phy_nl,
-        ixgbe_phy_tw_tyco,
-        ixgbe_phy_tw_unknown,
+        ixgbe_phy_sfp_passive_tyco,
+        ixgbe_phy_sfp_passive_unknown,
+        ixgbe_phy_sfp_active_unknown,
         ixgbe_phy_sfp_avago,
         ixgbe_phy_sfp_ftl,
+        ixgbe_phy_sfp_ftl_active,
         ixgbe_phy_sfp_unknown,
         ixgbe_phy_sfp_intel,
         ixgbe_phy_sfp_unsupported,
@@ -2208,6 +2211,8 @@ enum ixgbe_sfp_type {
         ixgbe_sfp_type_da_cu_core1 = 4,
         ixgbe_sfp_type_srlr_core0 = 5,
         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_not_present = 0xFFFE,
         ixgbe_sfp_type_unknown = 0xFFFF
 };