From a10c1c8191e04c21769656c2ca8e1c69a6218954 Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 7 Feb 2019 16:19:26 +0000 Subject: [PATCH] net: marvell: neta: add comphy support Add support for the common phy binding, so that we can reconfigure the comphy according to the desired ethernet speed. This will allow us to support 1000base-X and 2500base-X SFPs dynamically on SolidRun Clearfog. Signed-off-by: Russell King Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/mvneta.c | 45 +++++++++++++++++++++++++++++++---- 1 file changed, 41 insertions(+), 4 deletions(-) --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -27,6 +27,7 @@ #include #include #include +#include #include #include #include @@ -438,6 +439,7 @@ struct mvneta_port { struct device_node *dn; unsigned int tx_csum_limit; struct phylink *phylink; + struct phy *comphy; struct mvneta_bm *bm_priv; struct mvneta_bm_pool *pool_long; @@ -3167,6 +3169,8 @@ static void mvneta_start_dev(struct mvne { int cpu; + WARN_ON(phy_power_on(pp->comphy)); + mvneta_max_rx_size_set(pp, pp->pkt_size); mvneta_txq_max_tx_size_set(pp, pp->pkt_size); @@ -3229,6 +3233,8 @@ static void mvneta_stop_dev(struct mvnet mvneta_tx_reset(pp); mvneta_rx_reset(pp); + + WARN_ON(phy_power_off(pp->comphy)); } static void mvneta_percpu_enable(void *arg) @@ -3354,6 +3360,7 @@ static int mvneta_set_mac_addr(struct ne static void mvneta_validate(struct net_device *ndev, unsigned long *supported, struct phylink_link_state *state) { + struct mvneta_port *pp = netdev_priv(ndev); __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, }; /* We only support QSGMII, SGMII, 802.3z and RGMII modes */ @@ -3374,8 +3381,13 @@ static void mvneta_validate(struct net_d phylink_set(mask, Pause); /* Half-duplex at speeds higher than 100Mbit is unsupported */ - phylink_set(mask, 1000baseT_Full); - phylink_set(mask, 1000baseX_Full); + if (pp->comphy || state->interface != PHY_INTERFACE_MODE_2500BASEX) { + phylink_set(mask, 1000baseT_Full); + phylink_set(mask, 1000baseX_Full); + } + if (pp->comphy || state->interface == PHY_INTERFACE_MODE_2500BASEX) { + phylink_set(mask, 2500baseX_Full); + } if (!phy_interface_mode_is_8023z(state->interface)) { /* 10M and 100M are only supported in non-802.3z mode */ @@ -3389,6 +3401,11 @@ static void mvneta_validate(struct net_d __ETHTOOL_LINK_MODE_MASK_NBITS); bitmap_and(state->advertising, state->advertising, mask, __ETHTOOL_LINK_MODE_MASK_NBITS); + + /* We can only operate at 2500BaseX or 1000BaseX. If requested + * to advertise both, only report advertising at 2500BaseX. + */ + phylink_helper_basex_speed(state); } static int mvneta_mac_link_state(struct net_device *ndev, @@ -3400,7 +3417,9 @@ static int mvneta_mac_link_state(struct gmac_stat = mvreg_read(pp, MVNETA_GMAC_STATUS); if (gmac_stat & MVNETA_GMAC_SPEED_1000) - state->speed = SPEED_1000; + state->speed = + state->interface == PHY_INTERFACE_MODE_2500BASEX ? + SPEED_2500 : SPEED_1000; else if (gmac_stat & MVNETA_GMAC_SPEED_100) state->speed = SPEED_100; else @@ -3515,12 +3534,20 @@ static void mvneta_mac_config(struct net MVNETA_GMAC_FORCE_LINK_DOWN); } + /* When at 2.5G, the link partner can send frames with shortened * preambles. */ if (state->speed == SPEED_2500) new_ctrl4 |= MVNETA_GMAC4_SHORT_PREAMBLE_ENABLE; + if (pp->comphy && + (state->interface == PHY_INTERFACE_MODE_SGMII || + state->interface == PHY_INTERFACE_MODE_1000BASEX || + state->interface == PHY_INTERFACE_MODE_2500BASEX)) + WARN_ON(phy_set_mode_ext(pp->comphy, PHY_MODE_ETHERNET, + state->interface)); + if (new_ctrl0 != gmac_ctrl0) mvreg_write(pp, MVNETA_GMAC_CTRL_0, new_ctrl0); if (new_ctrl2 != gmac_ctrl2) @@ -4433,7 +4460,7 @@ static int mvneta_port_power_up(struct m if (phy_mode == PHY_INTERFACE_MODE_QSGMII) mvreg_write(pp, MVNETA_SERDES_CFG, MVNETA_QSGMII_SERDES_PROTO); else if (phy_mode == PHY_INTERFACE_MODE_SGMII || - phy_mode == PHY_INTERFACE_MODE_1000BASEX) + phy_interface_mode_is_8023z(phy_mode)) mvreg_write(pp, MVNETA_SERDES_CFG, MVNETA_SGMII_SERDES_PROTO); else if (!phy_interface_mode_is_rgmii(phy_mode)) return -EINVAL; @@ -4450,6 +4477,7 @@ static int mvneta_probe(struct platform_ struct mvneta_port *pp; struct net_device *dev; struct phylink *phylink; + struct phy *comphy; const char *dt_mac_addr; char hw_mac_addr[ETH_ALEN]; const char *mac_from; @@ -4475,6 +4503,14 @@ static int mvneta_probe(struct platform_ goto err_free_irq; } + comphy = devm_of_phy_get(&pdev->dev, dn, NULL); + if (comphy == ERR_PTR(-EPROBE_DEFER)) { + err = -EPROBE_DEFER; + goto err_free_irq; + } else if (IS_ERR(comphy)) { + comphy = NULL; + } + phylink = phylink_create(dev, pdev->dev.fwnode, phy_mode, &mvneta_phylink_ops); if (IS_ERR(phylink)) { @@ -4491,6 +4527,7 @@ static int mvneta_probe(struct platform_ pp = netdev_priv(dev); spin_lock_init(&pp->lock); pp->phylink = phylink; + pp->comphy = comphy; pp->phy_interface = phy_mode; pp->dn = dn;