lkml.org 
[lkml]   [2017]   [Sep]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH net-next 2/3] net: ethernet: socionext: add AVE ethernet driver
> > > +static irqreturn_t ave_interrupt(int irq, void *netdev)
> > > +{
> > > + struct net_device *ndev = (struct net_device *)netdev;
> > > + struct ave_private *priv = netdev_priv(ndev);
> > > + u32 gimr_val, gisr_val;
> > > +
> > > + gimr_val = ave_irq_disable_all(ndev);
> > > +
> > > + /* get interrupt status */
> > > + gisr_val = ave_r32(ndev, AVE_GISR);
> > > +
> > > + /* PHY */
> > > + if (gisr_val & AVE_GI_PHY) {
> > > + ave_w32(ndev, AVE_GISR, AVE_GI_PHY);
> > > + if (priv->internal_phy_interrupt)
> > > + phy_mac_interrupt(ndev->phydev, ndev->phydev->link);
> >
> > Humm. I don't think this is correct. You are supposed to give it the
> > new link state, not the old.
> >
> > What does a PHY interrupt mean here?
>
> In the general case, I think PHY events like changing link state are transmitted
> to CPU as interrupt via interrupt controller, then PHY driver itself can handle
> the interrupt.
>
> And in this case, PHY events are transmitted to MAC as one of its interrupt factor,
> then I thought that MAC driver had to tell the events to PHY.

Could this be in-band SGMI signalling from the PHY to the MAC? Does
the documentation give examples of when this interrupt will happen?

Andrew

\
 
 \ /
  Last update: 2017-09-11 14:32    [W:0.070 / U:3.408 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site