Re: 1.6 Release on Powerstack II

[Jochen Kunz <jkunz%maja.unixag-kl.fh-kl.de@localhost>]

On Thu, Jan 09, 2003 at 01:39:42PM +0100, Joerg Anton wrote:

> > I figured out that PCI config read / write
> > stuff today, now I have to implement it... 
[It is done now, heading for...]

> > Other nice things as
> > interrupt handling are still waiting for me. 
> > So there is somthing going on, but it will take some
> > time to finish. 
> Ok, there are many things to do.
Well it is not that much. Most things like OpenFirmware interface are 
already there and working (more or less ;-) ). Most time, say 90%,  
I am trying to understand what is going on, how the hardware and 
especially NetBSD kernel internas work.  The actual work is only 
10% of coding. Look at the firepower code. It is 1873 lines of code,
including lots of "generic" stuff like #define REGISTER 0xf.

> First I think, we need the PCI controller, the PCI to
> ISA bridge and interrupts working.
> Is a documentation from the motherboard available ?
The machine is based on the IBM27-82660 chipset. The user's manual is 
on IBMs web site somwhere as 82660_um.pdf. Maybe the Linux kernel source
can be an additional help, as the Penguin already runs on this machine. 
But I found the chipset user's manual more helpfull. 

> Is there a list of devices we must support?
If we have a working PCI attachment, all PCI devices will work automagicly.
-- 



tschüß,
         Jochen

Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/