On 06/16/2017 02:24 AM, Lin Yun Sheng wrote: > This patch fixes the phy loopback self_test failed issue. when > Marvell Phy Module is loaded, it will powerdown fiber when doing > phy loopback self test, which cause phy loopback self_test fail. > > Signed-off-by: Lin Yun Sheng <linyunsh...@huawei.com> > --- > drivers/net/ethernet/hisilicon/hns/hns_ethtool.c | 16 ++++++++++++++-- > 1 file changed, 14 insertions(+), 2 deletions(-) > > diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c > b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c > index b8fab14..e95795b 100644 > --- a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c > +++ b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c > @@ -288,9 +288,15 @@ static int hns_nic_config_phy_loopback(struct phy_device > *phy_dev, u8 en)
The question really is, why is not this properly integrated into the PHY driver and PHYLIB such that the only thing the Ethernet MAC driver has to call is a function of the PHY driver putting it in self-test? > > /* Force 1000M Link, Default is 0x0200 */ > phy_write(phy_dev, 7, 0x20C); > - phy_write(phy_dev, HNS_PHY_PAGE_REG, 0); > > - /* Enable PHY loop-back */ > + /* Powerup Fiber */ > + phy_write(phy_dev, HNS_PHY_PAGE_REG, 1); > + val = phy_read(phy_dev, COPPER_CONTROL_REG); > + val &= ~PHY_POWER_DOWN; > + phy_write(phy_dev, COPPER_CONTROL_REG, val); > + > + /* Enable Phy Loopback */ > + phy_write(phy_dev, HNS_PHY_PAGE_REG, 0); > val = phy_read(phy_dev, COPPER_CONTROL_REG); > val |= PHY_LOOP_BACK; > val &= ~PHY_POWER_DOWN; > @@ -299,6 +305,12 @@ static int hns_nic_config_phy_loopback(struct phy_device > *phy_dev, u8 en) > phy_write(phy_dev, HNS_PHY_PAGE_REG, 0xFA); > phy_write(phy_dev, 1, 0x400); > phy_write(phy_dev, 7, 0x200); > + > + phy_write(phy_dev, HNS_PHY_PAGE_REG, 1); > + val = phy_read(phy_dev, COPPER_CONTROL_REG); > + val |= PHY_POWER_DOWN; > + phy_write(phy_dev, COPPER_CONTROL_REG, val); > + > phy_write(phy_dev, HNS_PHY_PAGE_REG, 0); > phy_write(phy_dev, 9, 0xF00); > > -- Florian
