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Date: Sun, 13 Sep 2015 10:39:41 +0000
From: Alexey Dokuchaev <danfe@FreeBSD.org>
To: Marius Strobl <marius@alchemy.franken.de>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>,
 "freebsd-sparc64@freebsd.org" <freebsd-sparc64@freebsd.org>
Subject: Re: PCI range checking under qemu-system-sparc64
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On Sun, Sep 13, 2015 at 04:21:43AM +0200, Marius Strobl wrote:
> However, looking at ebus(4), I've spotted a bug in the conversion
> to NEW_PCIB. Interested parties might want to give the attached
> patch a try. That bug definitely can lead to the problem seen with
> QEMU, I'm not sure it's the only one in that regard, though; I'm
> fairly certain in this case there's no problem with interpreting
> the device-tree involved, given that the same code is used for
> ISA busses which - at least in reality - unlike EBus ones use
> I/O port instead of memory space for the resources of devices
> such as UARTs etc. There could be other spots not prepared for
> EBus devices suddenly requesting SYS_RES_IOPORT, too, though.

I've applied that patch, but it alone is not enough to allow the boot
to proceed further in QEMU. :(

As Mark had mentioned, I will try to get some debug info and share
it if I find anything interesting.

./danfe