From: "H. Peter Anvin" <hpa@zytor.com>
To: "David S. Miller" <davem@redhat.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] PCI updates - 32-bit IO support
Date: Wed, 19 Dec 2001 21:57:57 -0800 [thread overview]
Message-ID: <3C217DE5.5050104@zytor.com> (raw)
In-Reply-To: <20011218235024.N13126@flint.arm.linux.org.uk> <9vrmea$mef$1@cesium.transmeta.com> <20011219.213019.35013739.davem@redhat.com>
David S. Miller wrote:
> From: "H. Peter Anvin" <hpa@zytor.com>
> Date: 19 Dec 2001 19:37:46 -0800
>
> You probably need to verify that 32-bit support is available (both on
> the bridge and the peripherals), but if they are, there's no reason
> not to use it on non-x86 architectures...
>
> Don't the PCI specs actually talk about 24-bits in fact?
>
No. IOIO is 32 bits on PCI; however, it is legal to hardwire the top 16
bits to zero. It's something like 26 bits on HyperTransport.
-hpa
next prev parent reply other threads:[~2001-12-20 5:58 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-18 23:50 [PATCH] PCI updates - 32-bit IO support Russell King
2001-12-20 3:37 ` H. Peter Anvin
2001-12-20 5:30 ` David S. Miller
2001-12-20 5:57 ` H. Peter Anvin [this message]
2001-12-20 9:37 ` Russell King
2001-12-20 13:18 ` Ivan Kokshaysky
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