net/axgbe: support no-autoneg port mode

Add support for a new port mode that is a backplane
connection without support for auto negotiation.

Signed-off-by: Selwin Sebastian <selwin.sebastian@amd.com>
Acked-by: Chandubabu Namburu <chandu@amd.com>

diff --git a/drivers/net/axgbe/axgbe_phy_impl.c b/drivers/net/axgbe/axgbe_phy_impl.c
index eefb03e94e94a5c74997d3bcd1d4aa03be6a37b6..b0e1c267b1ed1fea7829ae9be9fa33b7b00dd6e1 100644 (file)
--- a/drivers/net/axgbe/axgbe_phy_impl.c
+++ b/drivers/net/axgbe/axgbe_phy_impl.c
@@ -46,6 +46,7 @@ enum axgbe_port_mode {
        AXGBE_PORT_MODE_10GBASE_T,
        AXGBE_PORT_MODE_10GBASE_R,
        AXGBE_PORT_MODE_SFP,
+       AXGBE_PORT_MODE_BACKPLANE_NO_AUTONEG,
        AXGBE_PORT_MODE_MAX,
 };
 
@@ -885,6 +886,7 @@ static enum axgbe_mode axgbe_phy_an73_redrv_outcome(struct axgbe_port *pdata)
        if (ad_reg & 0x80) {
                switch (phy_data->port_mode) {
                case AXGBE_PORT_MODE_BACKPLANE:
+               case AXGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
                        mode = AXGBE_MODE_KR;
                        break;
                default:
@@ -894,6 +896,7 @@ static enum axgbe_mode axgbe_phy_an73_redrv_outcome(struct axgbe_port *pdata)
        } else if (ad_reg & 0x20) {
                switch (phy_data->port_mode) {
                case AXGBE_PORT_MODE_BACKPLANE:
+               case AXGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
                        mode = AXGBE_MODE_KX_1000;
                        break;
                case AXGBE_PORT_MODE_1000BASE_X:
@@ -1052,6 +1055,7 @@ static unsigned int axgbe_phy_an_advertising(struct axgbe_port *pdata)
 
        switch (phy_data->port_mode) {
        case AXGBE_PORT_MODE_BACKPLANE:
+       case AXGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
                advertising |= ADVERTISED_10000baseKR_Full;
                break;
        case AXGBE_PORT_MODE_BACKPLANE_2500:
@@ -1122,6 +1126,7 @@ static enum axgbe_an_mode axgbe_phy_an_mode(struct axgbe_port *pdata)
        switch (phy_data->port_mode) {
        case AXGBE_PORT_MODE_BACKPLANE:
                return AXGBE_AN_MODE_CL73;
+       case AXGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
        case AXGBE_PORT_MODE_BACKPLANE_2500:
                return AXGBE_AN_MODE_NONE;
        case AXGBE_PORT_MODE_1000BASE_T:
@@ -1400,6 +1405,7 @@ static enum axgbe_mode axgbe_phy_switch_mode(struct axgbe_port *pdata)
 
        switch (phy_data->port_mode) {
        case AXGBE_PORT_MODE_BACKPLANE:
+       case AXGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
                return axgbe_phy_switch_bp_mode(pdata);
        case AXGBE_PORT_MODE_BACKPLANE_2500:
                return axgbe_phy_switch_bp_2500_mode(pdata);
@@ -1495,6 +1501,7 @@ static enum axgbe_mode axgbe_phy_get_mode(struct axgbe_port *pdata,
 
        switch (phy_data->port_mode) {
        case AXGBE_PORT_MODE_BACKPLANE:
+       case AXGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
                return axgbe_phy_get_bp_mode(speed);
        case AXGBE_PORT_MODE_BACKPLANE_2500:
                return axgbe_phy_get_bp_2500_mode(speed);
@@ -1644,6 +1651,7 @@ static bool axgbe_phy_use_mode(struct axgbe_port *pdata, enum axgbe_mode mode)
 
        switch (phy_data->port_mode) {
        case AXGBE_PORT_MODE_BACKPLANE:
+       case AXGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
                return axgbe_phy_use_bp_mode(pdata, mode);
        case AXGBE_PORT_MODE_BACKPLANE_2500:
                return axgbe_phy_use_bp_2500_mode(pdata, mode);
@@ -1806,6 +1814,7 @@ static bool axgbe_phy_port_mode_mismatch(struct axgbe_port *pdata)
 
        switch (phy_data->port_mode) {
        case AXGBE_PORT_MODE_BACKPLANE:
+       case AXGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
                if ((phy_data->port_speeds & AXGBE_PHY_PORT_SPEED_1000) ||
                    (phy_data->port_speeds & AXGBE_PHY_PORT_SPEED_10000))
                        return false;
@@ -1858,6 +1867,7 @@ static bool axgbe_phy_conn_type_mismatch(struct axgbe_port *pdata)
 
        switch (phy_data->port_mode) {
        case AXGBE_PORT_MODE_BACKPLANE:
+       case AXGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
        case AXGBE_PORT_MODE_BACKPLANE_2500:
                if (phy_data->conn_type == AXGBE_CONN_TYPE_BACKPLANE)
                        return false;
@@ -2122,6 +2132,8 @@ static int axgbe_phy_init(struct axgbe_port *pdata)
                /* Backplane support */
        case AXGBE_PORT_MODE_BACKPLANE:
                pdata->phy.supported |= SUPPORTED_Autoneg;
+               /* Fallthrough */
+       case AXGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
                pdata->phy.supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
                pdata->phy.supported |= SUPPORTED_Backplane;
                if (phy_data->port_speeds & AXGBE_PHY_PORT_SPEED_1000) {