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Re: [Qemu-devel] sparc sun4m changes
From: |
Blue Swirl |
Subject: |
Re: [Qemu-devel] sparc sun4m changes |
Date: |
Thu, 13 Aug 2009 21:54:01 +0300 |
On Mon, Aug 10, 2009 at 5:28 AM, Robert Reif<address@hidden> wrote:
> Robert Reif wrote:
>>
>> I just took a look at the sun4m interrupt controller and noticed
>> the recent changes. There are at least 3 different interrupt
>> controllers used by sun4m: ss600mp with VME and MBUS
>> specific support, ss 10/20 with MBUS support and ss 4/5/lx
>> with slavio support. This doesn't even address the java stations.
>>
>> intbit_to_level in slavio_intctrl.c needs to be different for each
>> controller chip used. There also needs to be a controller specific
>> interrupt mask used.
>>
>> The NCR slavio chip is only used for single processor systems
>> (ss 4/5/lx). It is a subset of the ss 10/20 which is a subset of the
>> ss600mp. We really should address these differences.
>>
> I forgot to mention the ss 10/20 uses an STP 2014 SBus to EBus
> Interface Controller. I have a paper copy of the User's Guide. I
> can have it scanned to a pdf if necessary.
I didn't find EBus on SS 10/20 OF trees, what's it used for? More docs
would be nice, though.
> The ss600mp uses ASICs with no documentation other than
> the sun4m System Architecture manual and SPARCsystem 600MP
> VMEbus Implementation Guide on:
> http://wikis.sun.com/display/FOSSdocs/Home.
>
There has been no activity in a year, are all devices documented already?