From: "Michael S. Tsirkin" <mst@redhat.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Blue Swirl <blauwirbel@gmail.com>,
Isaku Yamahata <yamahata@valinux.co.jp>,
Alexander Graf <agraf@suse.de>,
Aurelien Jarno <aurelien@aurel32.net>,
QEMU Developers <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] Re: [PATCH 1/6] Make config space accessor host bus trapable
Date: Tue, 5 Jan 2010 00:25:36 +0200 [thread overview]
Message-ID: <20100104222535.GA21659@redhat.com> (raw)
In-Reply-To: <1262642032.2173.388.camel@pasglop>
On Tue, Jan 05, 2010 at 08:53:52AM +1100, Benjamin Herrenschmidt wrote:
>
> > Yes, but I think how you program your host to pci bridge is platform specific,
> > the standard (mostly) applies to what happens below the bridge. There's
> > no real standard for how PCI host bridge is connected to processor
> > AFAIK, it's by luck we can share code there at all.
>
> Well, yes and no ... there's a standard on how a PCI host bridge is
> connected in the sense that how normal MMIO accesses go through in term
> of endianness is well defined.
>
Go through where? From processor to PCI?
Which spec do you refer to?
> How you actually issue config space cycles is a property of a given
> bridge. How you issue IO cycles as well in fact.
>
> Cheers,
> Ben.
next prev parent reply other threads:[~2010-01-05 19:56 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-03 1:50 [Qemu-devel] [PATCH 0/6] PPC NewWorld fixery Alexander Graf
2010-01-03 1:50 ` [Qemu-devel] [PATCH 1/6] Make config space accessor host bus trapable Alexander Graf
2010-01-03 15:45 ` [Qemu-devel] " Michael S. Tsirkin
2010-01-03 16:09 ` Alexander Graf
2010-01-03 17:29 ` Michael S. Tsirkin
2010-01-03 17:40 ` Alexander Graf
2010-01-03 17:44 ` Michael S. Tsirkin
2010-01-03 17:50 ` Alexander Graf
2010-01-03 18:06 ` Michael S. Tsirkin
2010-01-03 19:18 ` Blue Swirl
2010-01-10 18:41 ` Blue Swirl
2010-01-11 21:29 ` Blue Swirl
2010-01-11 22:33 ` Igor Kovalenko
2010-01-12 19:29 ` Blue Swirl
2010-01-18 19:47 ` Blue Swirl
2010-01-03 20:27 ` Alexander Graf
2010-01-03 20:50 ` Benjamin Herrenschmidt
2010-01-04 3:26 ` Alexander Graf
2010-01-04 10:45 ` Isaku Yamahata
2010-01-04 10:55 ` Alexander Graf
2010-01-04 11:08 ` Isaku Yamahata
2010-01-04 11:07 ` Michael S. Tsirkin
2010-01-04 11:13 ` Alexander Graf
2010-01-04 20:10 ` Benjamin Herrenschmidt
2010-01-04 21:12 ` Michael S. Tsirkin
2010-01-04 21:25 ` Benjamin Herrenschmidt
2010-01-04 21:30 ` Michael S. Tsirkin
2010-01-04 21:53 ` Benjamin Herrenschmidt
2010-01-04 22:25 ` Michael S. Tsirkin [this message]
2010-01-04 22:51 ` Benjamin Herrenschmidt
2010-01-04 22:59 ` Michael S. Tsirkin
2010-01-04 23:08 ` Alexander Graf
2010-01-04 23:12 ` Michael S. Tsirkin
2010-01-04 23:39 ` Benjamin Herrenschmidt
2010-01-04 23:33 ` Benjamin Herrenschmidt
2010-01-03 1:50 ` [Qemu-devel] [PATCH 2/6] Add config space conversion function for uni_north Alexander Graf
2010-01-03 15:32 ` [Qemu-devel] " Michael S. Tsirkin
2010-01-03 15:40 ` Alexander Graf
2010-01-03 15:47 ` Michael S. Tsirkin
2010-01-03 16:13 ` Alexander Graf
2010-01-03 16:20 ` Michael S. Tsirkin
2010-01-03 16:35 ` Alexander Graf
2010-01-03 17:23 ` Michael S. Tsirkin
2010-01-03 15:48 ` Michael S. Tsirkin
2010-01-03 1:50 ` [Qemu-devel] [PATCH 3/6] Use Mac99_U3 type on ppc64 Alexander Graf
2010-01-03 1:50 ` [Qemu-devel] [PATCH 4/6] Include dump of lspci -nn on real G5 Alexander Graf
2010-01-03 1:50 ` [Qemu-devel] [PATCH 5/6] Make interrupts work Alexander Graf
2010-01-03 1:50 ` [Qemu-devel] [PATCH 6/6] Enable secondary cmd64x Alexander Graf
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