Re: [RFC PATCH] net: phy/mdio: enable mmd indirect access through phy_mii_ioctl()

[Grygorii Strashko]

Hi Russell, Andrew,

Thanks a lot for you comments.

On 02/11/2021 19:41, Russell King (Oracle) wrote:
> On Tue, Nov 02, 2021 at 07:19:46PM +0200, Grygorii Strashko wrote:
> > It would require MDIO bus lock, which is not a solution,
> > or some sort of batch processing, like for mmd:
> >   w reg1 val1
> >   w reg2 val2
> >   w reg1 val3
> >   r reg2
> >
> > What Kernel interface do you have in mind?
>
> That is roughly what I was thinking, but Andrew has basically said no
> to it.
>
> > Sry, but I have to note that demand for this become terribly high, min two pings in months
>
> Feel free to continue demanding it, but it seems that at least two of
> the phylib maintainers are in agreement that providing generic
> emulation of C45 accesses in kernel space is just not going to happen.

not ready to give up.

One more idea how about mdiobus_get_phy(), so we can search for PHY and
if present try to use proper API phy_read/phy_write_mmd?


--
Best regards,
grygorii