Re: HP9000 K-Series support, howto and diffs

Making, drinking tea and reading an opus magnum from Jochen Kunz:
[Charset ISO-8859-15 unsupported, filtering to ASCII...]
> On 2003.10.31 18:21 Hellmuth Michaelis wrote:
> 
> > At http://www.kts.org/hm/download/openbsd-hppa/k220-openbsd-34.txt
> > i have made available what i have right now.
> Verry interresting. I haven't checked it all in detail. I had a closer
> look to your modifications to autoconf.c, pdc_scanbus() in particular. I
> did some work on the corresponding code in NetBSD/hp700 some days ago. I
> found a similar solution. I use two different algorithems depending on
> the machine type. One to use PDC_TYPE_MEMMAP and one for
> PDC_TYPE_SYSMAP. 
> 
> >From your k220-openbsd-34.txt:
> - fix the double detection of cards. this is because cards are visible
>   at several locations on the main bus _and_ below bus converters.
>   imo the only way to do this is to create a database of found cards
>   referenced by their path (i.e. 10/12/6) at autoconf time and ignore
>   double detected cards at the same path
> I had the same problem. When my code worked well on the B132L, several
> devices where double detected on the 715/100XC. (My code at that time
> was basicly the OpenBSD pdc_scanbus()) I fond that this is caused by
> different semantics of the device path parameter to PDC_TYPE_MEMMAP and
> PDC_TYPE_SYSMAP. Maybe you can look at the NetBSD code. It is not in the
> CVS, you can get a diff or full soure from 
> http://www.unixag-kl.fh-kl.de/~jkunz/NetBSD/hp700/
> 
> I got the different semantics of the device path parameter from the
> Linux code in linux-2.4.18/arch/parisc/kernel/inventory.c function
> really_do_oldhw_inventory(). There are two comments descibing the device
> path handling.
> 
> It seams that OpenBSD solved the double detection problem on
> PDC_TYPE_MEMMAP machines with the introduction of locators for device
> attachments and nailing down the devices in the kernel config file. I
> was able to avoid this with my code. In fact, the way the current
> OpenBSD code handles the device path with PDC_TYPE_MEMMAP is plain
> false. (To my limited knowledge.)

wait. i've missed this perl the first time i read it.
so you are saying that my code is false and yet it works on
all supported machines (including all that you have problems on)
w/o detecting any device twice or any other artifacts.
on the other hand your "true" (i suppose) code does not work.

i'm confused.

cu

-- 
    paranoic mickey       (my employers have changed but, the name has remained)