Hi Florian
> -----Original Message-----
> From: Florian Fainelli [mailto:f.faine...@gmail.com]
> Sent: Wednesday, June 14, 2017 12:46 AM
> To: Salil Mehta; da...@davemloft.net
> Cc: Zhuangyuzeng (Yisen); huangdaode; lipeng (Y);
> mehta.salil....@gmail.com; net...@vger.kernel.org; linux-
> ker...@vger.kernel.org; Linuxarm
> Subject: Re: [PATCH V2 net-next 6/8] net: hns3: Add MDIO support to
> HNS3 Ethernet driver for hip08 SoC
>
> On 06/13/2017 04:10 PM, Salil Mehta wrote:
> > This patch adds the support of MDIO bus interface for HNS3 driver.
> > Code provides various interfaces to start and stop the PHY layer
> > and to read and write the MDIO bus or PHY.
> >
> > Signed-off-by: Daode Huang <huangda...@hisilicon.com>
> > Signed-off-by: lipeng <lipeng...@huawei.com>
> > Signed-off-by: Salil Mehta <salil.me...@huawei.com>
> > Signed-off-by: Yisen Zhuang <yisen.zhu...@huawei.com>
> > ---
>
> > + phy = get_phy_device(mdio_bus, mac->phy_addr, mac->is_c45);
> > + if (!phy || IS_ERR(phy)) {
> > + dev_err(mdio_bus->parent, "Failed to get phy device\n");
> > + ret = -EIO;
> > + goto err_mdio_register;
> > + }
> > +
> > + phy->irq = mdio_bus->irq[mac->phy_addr];
> > +
> > + /* All data is now stored in the phy struct;
> > + * register it
> > + */
> > + ret = phy_device_register(phy);
> > + if (ret) {
> > + ret = -ENODEV;
> > + goto err_phy_register;
> > + }
>
> Until this gets fixed in the core PHY library, it's okay to do that,
> but
> please fix the
For now we are planning to drop the support of C45 till we fix this issue
in the core. I Will try to address this as a separate patch.
Thanks
Salil
>
> > +
> > + mac->phy_dev = phy;
> > +
> > + return 0;
> > +
> > +err_phy_register:
> > + phy_device_free(phy);
> > +
> > +err_mdio_register:
> > + mdiobus_unregister(mdio_bus);
> > + mdiobus_free(mdio_bus);
> > +err_miibus_alloc:
> > + return ret;
> > +}
> > +
> > +static void hclge_mac_adjust_link(struct net_device *net_dev)
> > +{
> > + int duplex;
> > + int speed;
> > + struct hclge_mac *hw_mac;
> > + struct hclge_hw *hw;
> > + struct hclge_dev *hdev;
> > +
> > + if (!net_dev)
> > + return;
> > +
> > + hw_mac = container_of(net_dev, struct hclge_mac, ndev);
> > + hw = container_of(hw_mac, struct hclge_hw, mac);
> > + hdev = hw->back;
> > +
> > + speed = hw_mac->phy_dev->speed;
> > + duplex = hw_mac->phy_dev->duplex;
> > +
> > + /* update antoneg. */
> > + hw_mac->autoneg = hw_mac->phy_dev->autoneg;
> > +
> > + if ((hw_mac->speed != speed) || (hw_mac->duplex != duplex))
> > + (void)hclge_cfg_mac_speed_dup(hdev, speed, !!duplex);
> > +}
> > +
> > +int hclge_mac_start_phy(struct hclge_dev *hdev)
> > +{
> > + struct hclge_mac *mac = &hdev->hw.mac;
> > + struct phy_device *phy_dev = mac->phy_dev;
> > + int ret;
> > +
> > + if (!phy_dev)
> > + return 0;
> > +
> > + if (mac->phy_if != PHY_INTERFACE_MODE_XGMII) {
> > + phy_dev->dev_flags = 0;
> > +
> > + ret = phy_connect_direct(&mac->ndev, phy_dev,
> > + hclge_mac_adjust_link,
> > + mac->phy_if);
> > + phy_dev->supported = SUPPORTED_10baseT_Half |
> > + SUPPORTED_10baseT_Full |
> > + SUPPORTED_100baseT_Half |
> > + SUPPORTED_100baseT_Full |
> > + SUPPORTED_Autoneg |
> > + SUPPORTED_1000baseT_Full;
> > +
> > + phy_dev->autoneg = false;
> > + } else {
> > + ret = phy_attach_direct(&mac->ndev, phy_dev, 0, mac-
> >phy_if);
> > + phy_dev->supported = SUPPORTED_10000baseR_FEC |
> > + SUPPORTED_10000baseKR_Full;
> > + }
>
> I really don't see why you don't take the exact same path whether it's
> XGMII or not, just like you are not masking with that the PHY driver
> already supports, this needs fixing.
Sure will fix it in next V3 patch.
Thanks
Salil
>
> > + if (unlikely(ret))
> > + return -ENODEV;
> > +
> > + phy_start(phy_dev);
> > +
> > + return 0;
> > +}
> > +
> > +void hclge_mac_stop_phy(struct hclge_dev *hdev)
> > +{
> > + struct hclge_mac *mac = &hdev->hw.mac;
> > + struct phy_device *phy_dev = mac->phy_dev;
> > +
> > + if (!phy_dev)
> > + return;
> > +
> > + phy_stop(phy_dev);
> > +
> > + if (mac->phy_if != PHY_INTERFACE_MODE_XGMII)
> > + phy_disconnect(phy_dev);
> > + else
> > + phy_detach(phy_dev);
>
> Same here.
Will fix it in next V3 patch.
Thanks
Salil
> --
> Florian
