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From: Paul Brook <paul@codesourcery.com>
Date: Mon, 20 Jun 2011 16:23:58 +0100
References: <1307532813-27175-1-git-send-email-peter.maydell@linaro.org>
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Subject: Re: [Qemu-devel] [PATCH RFC 0/3] basic support for composing sysbus
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To: Blue Swirl <blauwirbel@gmail.com>
Cc: Peter Maydell <peter.maydell@linaro.org>, Juha =?utf-8?q?Riihim=C3=A4ki?= <juha.riihimaki@nokia.com>, "patches@linaro.org" <patches@linaro.org>, Jan Kiszka <jan.kiszka@siemens.com>, Markus Armbruster <armbru@redhat.com>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, Avi Kivity <avi@redhat.com>

> > Yeah, that's why I said, "hard to do well".  It makes it very hard to add
> > new socket types.
> 
> PCI, USB, IDE, SCSI, SBus, what else? APICBus? I2C? 8 socket types
> ought to be enough for anybody.

Off the top of my head: AClink (audio), i2s (audio), SSI/SSP (synchonous 
serial), Firewire, rs232, CAN, FibreChannel, ISA, PS2, ADB (apple desktop bus) 
and probably a bunch of others I've missed.  There's also a bunch of all-but 
extinct system architectures with interesting bus-level features (MCA, NuBus, 
etc.)

Paul