[coreboot] Interrupt mapping with NetBSD

[Andrey Korolyov]

On Sat, Jun 27, 2015 at 4:28 PM, Jonathan A. Kollasch
<jakllsch at kollasch.net> wrote:
> On Sat, Jun 27, 2015 at 04:09:08PM +0300, Andrey Korolyov wrote:
>> Hello,
>>
>> can anyone please provide a solid pointer for a 'patch' mentioned in
>> http://www.coreboot.org/NetBSD#Interrupt_routing? It looks like that
>> the even recent MPBIOS code in NetBSD kernel is not able to place all
>> interrupts correctly if coreboot is used with SeaBIOS payload, my
>> 82577 does not work exactly because of that under this OS. The target
>> hardware is a well-supported X201 platform, if this can add more
>> sense.
>
> The patch is unnecessary if the payload is SeaBIOS, which is the payload
> you want to use to boot NetBSD anyway.  I barely remember the details of
> the patch at this point, and I have no idea if I still have it laying
> around.
>
> Anyway, you almost certainly don't want to be relying on anything other
> than the DSDT for interrupt routing on a modern machine with a modern OS.
>

Thanks, disabling MPBIOS and therefore relying purely on what was
populated by ACPI didn`t help with issue. Just to mention - Linux
kernel works just fine with same device numbers, so the nature of the
problem is a bit unclear to me (driver`s code for 'unable to map
interrupt' suggests that there was no interrupt number provided at
all). Sadly the wireless driver behaves very poorly with 6250, leaving
no alternative for remote connection than a temporarily broken
ethernet link:

64 bytes from 192.168.1.36: icmp_seq=2 ttl=255 time=14.0 ms
64 bytes from 192.168.1.36: icmp_seq=5 ttl=255 time=3.50 ms
64 bytes from 192.168.1.36: icmp_seq=7 ttl=255 time=13.5 ms