Re: Yes, NetBSD still boots on pretty ancient Alphas...

[Istvan Gyenes <igyenes%gmail.com@localhost>]

On 2021. 07. 28. 17:37, Jason Thorpe wrote:
> > On Jul 28, 2021, at 12:28 AM, Istvan Gyenes <igyenes%gmail.com@localhost> wrote:
> >
> > [   1.0000000] depca2 at eisa0 slot 4: DEC DE422 Ethernet
> > [   1.0000000] depca2: shared memory at 0xd0000-0xdffff
> > [   1.0000000] le0 at depca2
> > [   1.0000000] le0: failed to clear memory at 0 (0xff != 0xaa)
> I am suspicious of this bit of code in depca.c:
>
>          bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_CSR,
>              DEPCA_CSR_DUM | DEPCA_CSR_IEN | DEPCA_CSR_SHE |
>              (dsc->sc_memsize == 32*1024 ? DEPCA_CSR_LOW32K : 0));
>
> Specifically, I'm suspicious of the DUM bit.  I found an old DEPCA driver for Linux that calls that bit _128KB.
>
> Can you try building a kernel with that bit removed from that bus_space_write_2() call?

Removed "DEPCA_CSR_DUM | " recompiled, but nothing has changed.

   1.0000000] scsibus0 at ahb0: 8 targets, 8 luns per target
[   1.0000000] depca2 at eisa0 slot 4: DEC DE422 Ethernet
[   1.0000000] depca2: shared memory at 0xd0000-0xdffff
[   1.0000000] le0 at depca2
[   1.0000000] le0: failed to clear memory at 0 (0xff != 0xaa)

--

istvan