netdev - Re: [PATCH v2 06/10] net: stmmac: Add Loongson HWIF entry

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Message-ID: <CACWXhKmb6iw+Y8teNVR7J_vTqPEezExixRHvV2kGVDV4X_4HBA@mail.gmail.com>
Date: Thu, 3 Aug 2023 09:33:45 +0800
From: Feiyang Chen <chris.chenfeiyang@...il.com>
To: "Russell King (Oracle)" <linux@...linux.org.uk>
Cc: Feiyang Chen <chenfeiyang@...ngson.cn>, andrew@...n.ch, hkallweit1@...il.com, 
	peppe.cavallaro@...com, alexandre.torgue@...s.st.com, joabreu@...opsys.com, 
	chenhuacai@...ngson.cn, dongbiao@...ngson.cn, 
	loongson-kernel@...ts.loongnix.cn, netdev@...r.kernel.org, 
	loongarch@...ts.linux.dev
Subject: Re: [PATCH v2 06/10] net: stmmac: Add Loongson HWIF entry

On Mon, Jul 31, 2023 at 11:16 PM Russell King (Oracle)
<linux@...linux.org.uk> wrote:
>
> On Mon, Jul 31, 2023 at 05:46:57PM +0800, Feiyang Chen wrote:
> > On Fri, Jul 28, 2023 at 5:24 PM Russell King (Oracle)
> > <linux@...linux.org.uk> wrote:
> > >
> > > On Thu, Jul 27, 2023 at 03:18:06PM +0800, Feiyang Chen wrote:
> > > > diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> > > > index e8619853b6d6..829de274e75d 100644
> > > > --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> > > > +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> > > > @@ -3505,17 +3505,21 @@ static int stmmac_request_irq_multi_msi(struct net_device *dev)
> > > >  {
> > > >       struct stmmac_priv *priv = netdev_priv(dev);
> > > >       enum request_irq_err irq_err;
> > > > +     unsigned long flags = 0;
> > > >       cpumask_t cpu_mask;
> > > >       int irq_idx = 0;
> > > >       char *int_name;
> > > >       int ret;
> > > >       int i;
> > > >
> > > > +     if (priv->plat->has_lgmac)
> > > > +             flags |= IRQF_TRIGGER_RISING;
> > >
> > > Can this be described in firmware?
> > >
> >
> > Hi, Russell,
> >
> > I'm not sure, could you explain what you mean?
>
> Modern systems describe the IRQ triggering in firmware for the OS
> such as DT. Does your implementation have any firmware that can
> do this kind of description for you (e.g. DT, ACPI?)
>

Hi, Russell,

I see. I think I can get this from DT.

Thanks,
Feiyang

> --
> RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
> FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!