[OpenBIOS] Faulty Qemu SPARC64 IDE emulation?

Blue Swirl blauwirbel at gmail.com
Tue Dec 22 18:31:00 CET 2009

On Tue, Dec 22, 2009 at 5:06 PM, Tarl Neustaedter
<Tarl.Neustaedter at sun.com> wrote:
> [...]
>> Right, I think I understand now. So the obvious question to ask now is how
>> is PCI configuration space mapped on Sparc64? I can see that on x86 it's
>> mapped to an I/O port at 0xCF8 but I can't seem to find how this is
>> implemented on Sparc64. Anyone have any idea?
> PCI spaces are each mapped in separately in physical spaces on SPARC. On a
> Sun4u system, as I recall, the mappings are something like:
> 1fe.0000.0000-1fe.00ff.ffff : config-space (where it's bbddff,
> bus-device-function)
> 1fe.8000.0000-1fe.ffff.ffff: io space
> 1ff.0000.0000-1ff.ffff.ffff: 32-bit memory space
> I'll get the exact addresses later on today. Also note there will be
> multiple such mappings, since we usually have multiple PCI roots.

These are documented in "UltraSPARC-IIi User's Manual", 805-0087, Chapter 9.

Some relevant docs can be found in:

BTW, the pages have been updated in ages. Nobody wants interesting
documents anymore?

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