Hi Andrew,
Thank you for code review and valuable comments.
On Wed, Sep 28, 2016 at 10:24:51PM +0200, Andrew Lunn wrote:
> EXTERNAL EMAIL
>
>
> > + reg_val = phy_read(phydev, MSCC_PHY_BYPASS_CONTROL);
> > + if ((mdix == ETH_TP_MDI) || (mdix == ETH_TP_MDI_X)) {
> > + reg_val |= (DISABLE_PAIR_SWAP_CORR_MASK |
> > + DISABLE_POLARITY_CORR_MASK |
> > + DISABLE_HP_AUTO_MDIX_MASK);
> > + } else {
> > + reg_val &= ~(DISABLE_PAIR_SWAP_CORR_MASK |
> > + DISABLE_POLARITY_CORR_MASK |
> > + DISABLE_HP_AUTO_MDIX_MASK);
> > + }
> > + rc = phy_write(phydev, MSCC_PHY_BYPASS_CONTROL, reg_val);
> > + if (rc != 0)
> > + goto out_unlock;
> > +
> > + rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_EXTENDED);
> > + if (rc != 0)
> > + goto out_unlock;
> > +
> > + reg_val = phy_read(phydev, MSCC_PHY_EXT_MODE_CNTL);
> > + reg_val &= ~(FORCE_MDI_CROSSOVER_MASK);
> > + if (mdix == ETH_TP_MDI)
> > + reg_val |= FORCE_MDI_CROSSOVER_MDI;
> > + else if (mdix == ETH_TP_MDI_X)
> > + reg_val |= FORCE_MDI_CROSSOVER_MDIX;
> > + rc = phy_write(phydev, MSCC_PHY_EXT_MODE_CNTL, reg_val);
> > + if (rc != 0)
> > + goto out_unlock;
> > +
> > + rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_STANDARD);
> > +
> > +out_unlock:
>
> out_unlock seems a bit of an odd name, since you are not unlocking
> anything.
>
It's my mistake. Mutex should be there. I will add mutex.
> I also wonder if you should try to reset to MSCC_PHY_PAGE_STANDARD in
> the error condition?
>
> > +
> > + return rc;
> > +}
> > +
> > static int vsc85xx_wol_set(struct phy_device *phydev,
> > struct ethtool_wolinfo *wol)
> > {
> > @@ -227,6 +281,7 @@ static int vsc85xx_default_config(struct phy_device
> > *phydev)
> > int rc;
> > u16 reg_val;
> >
> > + phydev->mdix = ETH_TP_MDI_AUTO;
>
> Humm, interesting. The only other driver supporting mdix is the
> Marvell one. It does not do this, it leaves it to its default value of
> ETH_TP_MDI_INVALID. It does however interpret ETH_TP_MDI_INVALID as
> meaning as ETH_TP_MDI_AUTO.
>
> There needs to be consistency here. You either need to do the same as
> the Marvell driver, or you need to modify the Marvell driver to also
> set phydev->mdix to ETH_TP_MDI_AUTO.
>
In Ethtool two variable i.e. eth_tp_mdix_ctrl, eth_tp_mdix use to update
the status. But, driver header is having one variable i.e. mdix.
Driver header should also have another variabl like mdix_ctrl.
Then, Ethtool can get/set the Auto MDIX/MDI.
In case, mdix is not configure with ETH_TP_MDI_AUTO, Ethtool shows error as
"setting MDI not supported"
Please suggest me if you have any better method to fix this issue.
> I don't yet know which of these two is the right thing to do.
>
> Florian?
>
> Andrew
---
Thanks,
Raju.
