Re: vax wscons setting questions

Den 2024-02-12 kl. 05:11, skrev Izumi Tsutsui:
> ragge@ wrote:
>
>>> and even src/sys/arch/vax/uba/dmf.c has not been ported from 4.4BSD?
>>>    https://man.netbsd.org/vax/dmf.4
>> Hm, I try to recapture more about this :-)
>>
>> I used DMF32 on 750's in the mid-90's.  Compiling the driver from 4BSD
>> was trivial back then, but it could not be checked in in NetBSD due to
>> the licensing issues.
>>
>> There is no need to revert anything, better to try to be as similar as
>> possible as other ports.
> Sure, I guess then there is no actual user (except you :-) of dmf(4)
> with tty[EFGH][0-7] nodes.
>
> I'll update src/etc/etc.vax/MAKEDEV.conf to clarify how these
> tty[EFGH] should be handled:
>   - explicitly comment out dmf(4) (and dmz(4)) entries
>   - denote that tty[EFGH] were reserved for dmf(4) but it had not
>     been imported, so now tty[EFGH] are used by MI wscons
>   - new tty node names should be assigned once dmf(4) is committed
Yes, please do so.

Hm, I do not think that any VAXen that supports DMF32 can have wscons, 
so they are sort of mutually exclusive :-)

>> I asked core@ some years ago if the MBA routines from 4BSD could be
>> checked in, but they responded that the licensing issues were
>> unfortunately still unclear.
> Hmm.  I guess there are a lot of cleanup task to update 4.4BSD
> derived sources for modern NetBSD, so maybe it's worth to rewrite
> it based on qvaux.c etc.?
>
> It looks most vax serial drivers call tty(4) layer functions
> (t_linesw->l_rint() and t_linesw->l_start() etc.) from
> interrupt handlers, but I guess nowadays we have to use
> softint(9) to avoid MI locking issue.
>
> I had several trouble on luna68k and updated sio(4) driver
> derived from 4.4BSD to use softint(9):
>   https://github.com/NetBSD/src/commit/bc63cd4
Quite unlikely that someone would bother writing a device driver for it.
To test DMF32 a "big" vax is needed; since those are Unibus cards.
I assume that they are quite uncommon these days (I assume Johnny 
Billquist may have one? :-) )

-- Ragge