From: "Randy.Dunlap" <rdunlap@xenotime.net>
To: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: linux1394-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org
Subject: Re: sbp2 address space
Date: Sat, 14 Jan 2006 14:12:10 -0800 [thread overview]
Message-ID: <20060114141210.567eab77.rdunlap@xenotime.net> (raw)
In-Reply-To: <43C2D899.2080302@s5r6.in-berlin.de>
On Mon, 09 Jan 2006 22:41:45 +0100 Stefan Richter wrote:
> I wrote:
> > Does PCIe provide a bigger host bus address space than PCI?
>
> PCIe obviously supports 64bit addressing. Do newer revisions of
> conventional PCI support more than 32bit addressing? What about PCI-X? TIA.
PCI-X allows 32-bit or 64-bit transfers.
IIRC, PCI conventional supports 64-bit by "DAC" == dual-address cycle,
basically 2 32-bit transfers.
> [sbp2 depends on a <= 32bit address space of the host bus. Single-chip
> FireWire PCIe adapters are available now but I believe they are merely
> based on a PCI FireWire link layer controller plus PCI-PCIe bridge.]
The PCI specs cost money, else we could just download and read them. :(
Google found some hits, mostly marketing-speak, and this
1394b PCI-64bit host controller:
http://tekgems.com/Products/MJ-FW-PCI-13.htm
---
~Randy
prev parent reply other threads:[~2006-01-14 22:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-07 12:07 Stefan Richter
2006-01-09 21:41 ` Stefan Richter
2006-01-14 22:12 ` Randy.Dunlap [this message]
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