net: phy: xpcs: Add XLGMII support

Add XLGMII support for XPCS. This does not include Autoneg feature.

Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/phy/mdio-xpcs.c b/drivers/net/phy/mdio-xpcs.c
index 973f588146f7766f4d6869e0cb186547ceacebf7..2f4cdf807160e835b12cdf6538226ac16497c604 100644 (file)
--- a/drivers/net/phy/mdio-xpcs.c
+++ b/drivers/net/phy/mdio-xpcs.c
@@ -14,6 +14,7 @@
 
 #define SYNOPSYS_XPCS_USXGMII_ID       0x7996ced0
 #define SYNOPSYS_XPCS_10GKR_ID         0x7996ced0
+#define SYNOPSYS_XPCS_XLGMII_ID                0x7996ced0
 #define SYNOPSYS_XPCS_MASK             0xffffffff
 
 /* Vendor regs access */
@@ -74,6 +75,36 @@ static const int xpcs_10gkr_features[] = {
        __ETHTOOL_LINK_MODE_MASK_NBITS,
 };
 
+static const int xpcs_xlgmii_features[] = {
+       ETHTOOL_LINK_MODE_Pause_BIT,
+       ETHTOOL_LINK_MODE_Asym_Pause_BIT,
+       ETHTOOL_LINK_MODE_25000baseCR_Full_BIT,
+       ETHTOOL_LINK_MODE_25000baseKR_Full_BIT,
+       ETHTOOL_LINK_MODE_25000baseSR_Full_BIT,
+       ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT,
+       ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT,
+       ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT,
+       ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT,
+       ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT,
+       ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT,
+       ETHTOOL_LINK_MODE_50000baseSR2_Full_BIT,
+       ETHTOOL_LINK_MODE_50000baseKR_Full_BIT,
+       ETHTOOL_LINK_MODE_50000baseSR_Full_BIT,
+       ETHTOOL_LINK_MODE_50000baseCR_Full_BIT,
+       ETHTOOL_LINK_MODE_50000baseLR_ER_FR_Full_BIT,
+       ETHTOOL_LINK_MODE_50000baseDR_Full_BIT,
+       ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT,
+       ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT,
+       ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT,
+       ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT,
+       ETHTOOL_LINK_MODE_100000baseKR2_Full_BIT,
+       ETHTOOL_LINK_MODE_100000baseSR2_Full_BIT,
+       ETHTOOL_LINK_MODE_100000baseCR2_Full_BIT,
+       ETHTOOL_LINK_MODE_100000baseLR2_ER2_FR2_Full_BIT,
+       ETHTOOL_LINK_MODE_100000baseDR2_Full_BIT,
+       __ETHTOOL_LINK_MODE_MASK_NBITS,
+};
+
 static const phy_interface_t xpcs_usxgmii_interfaces[] = {
        PHY_INTERFACE_MODE_USXGMII,
        PHY_INTERFACE_MODE_MAX,
@@ -84,6 +115,11 @@ static const phy_interface_t xpcs_10gkr_interfaces[] = {
        PHY_INTERFACE_MODE_MAX,
 };
 
+static const phy_interface_t xpcs_xlgmii_interfaces[] = {
+       PHY_INTERFACE_MODE_XLGMII,
+       PHY_INTERFACE_MODE_MAX,
+};
+
 static struct xpcs_id {
        u32 id;
        u32 mask;
@@ -100,6 +136,11 @@ static struct xpcs_id {
                .mask = SYNOPSYS_XPCS_MASK,
                .supported = xpcs_10gkr_features,
                .interface = xpcs_10gkr_interfaces,
+       }, {
+               .id = SYNOPSYS_XPCS_XLGMII_ID,
+               .mask = SYNOPSYS_XPCS_MASK,
+               .supported = xpcs_xlgmii_features,
+               .interface = xpcs_xlgmii_interfaces,
        },
 };
 
@@ -458,6 +499,60 @@ static void xpcs_resolve_lpa(struct mdio_xpcs_args *xpcs,
        state->duplex = DUPLEX_FULL;
 }
 
+static int xpcs_get_max_xlgmii_speed(struct mdio_xpcs_args *xpcs,
+                                    struct phylink_link_state *state)
+{
+       unsigned long *adv = state->advertising;
+       int speed = SPEED_UNKNOWN;
+       int bit;
+
+       for_each_set_bit(bit, adv, __ETHTOOL_LINK_MODE_MASK_NBITS) {
+               int new_speed = SPEED_UNKNOWN;
+
+               switch (bit) {
+               case ETHTOOL_LINK_MODE_25000baseCR_Full_BIT:
+               case ETHTOOL_LINK_MODE_25000baseKR_Full_BIT:
+               case ETHTOOL_LINK_MODE_25000baseSR_Full_BIT:
+                       new_speed = SPEED_25000;
+                       break;
+               case ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT:
+               case ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT:
+               case ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT:
+               case ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT:
+                       new_speed = SPEED_40000;
+                       break;
+               case ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT:
+               case ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT:
+               case ETHTOOL_LINK_MODE_50000baseSR2_Full_BIT:
+               case ETHTOOL_LINK_MODE_50000baseKR_Full_BIT:
+               case ETHTOOL_LINK_MODE_50000baseSR_Full_BIT:
+               case ETHTOOL_LINK_MODE_50000baseCR_Full_BIT:
+               case ETHTOOL_LINK_MODE_50000baseLR_ER_FR_Full_BIT:
+               case ETHTOOL_LINK_MODE_50000baseDR_Full_BIT:
+                       new_speed = SPEED_50000;
+                       break;
+               case ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT:
+               case ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT:
+               case ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT:
+               case ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT:
+               case ETHTOOL_LINK_MODE_100000baseKR2_Full_BIT:
+               case ETHTOOL_LINK_MODE_100000baseSR2_Full_BIT:
+               case ETHTOOL_LINK_MODE_100000baseCR2_Full_BIT:
+               case ETHTOOL_LINK_MODE_100000baseLR2_ER2_FR2_Full_BIT:
+               case ETHTOOL_LINK_MODE_100000baseDR2_Full_BIT:
+                       new_speed = SPEED_100000;
+                       break;
+               default:
+                       continue;
+               }
+
+               if (new_speed > speed)
+                       speed = new_speed;
+       }
+
+       return speed;
+}
+
 static void xpcs_resolve_pma(struct mdio_xpcs_args *xpcs,
                             struct phylink_link_state *state)
 {
@@ -468,6 +563,9 @@ static void xpcs_resolve_pma(struct mdio_xpcs_args *xpcs,
        case PHY_INTERFACE_MODE_10GKR:
                state->speed = SPEED_10000;
                break;
+       case PHY_INTERFACE_MODE_XLGMII:
+               state->speed = xpcs_get_max_xlgmii_speed(xpcs, state);
+               break;
        default:
                state->speed = SPEED_UNKNOWN;
                break;