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RE: What's your bus? Summary #2
I'd say that there are essentially two mailing lists for
PCI Express. One of them is actually this list, as this
list functions as the PCI-SIG mailing list, and PCI-Express
is a PCI-SIG specification.
Members of the PCI-SIG can download the PCI-Express specification
from the PCI-SIG website at http://www.pci-sig.com. The specification
has been approved by the SIG since July timeframe.
Intel (who is a member of the PCI-SIG as well) has been sponsoring
a lot of how-to information at its web site, a portion of the
Intel Developer Network.
That includes PCI-Express I/O cell models and other information.
And as part of the workgroup function of that sight, one can join
a mailing list for each workgroup. The most active workgroup (and
mailing list) currently would have to the I/O cell and model workgroup.
Currently, there has not been a huge amount of software information
really distributed beyond the specification itself. There have been
a few white papers, and those are available from the PCI-SIG site.
The software "pause" is (I hope) primarily because PCI-Express
is backward compatible with PCI from a software model standpoint.
PCI-Express does extend the configuration space, but the extended
space need not be accessed by software which it trying only to get
PCI equivalent software function out of PCI-Express devices. (e.g.,
if the BIOS does its work correctly, legacy OS that "only" know about
PCI will work just fine with PCI express). The P2P Bridge model is
PCI-Express also supports a couple of interrupt mechanisms. One of
them provides for PCI compatible INTx style interrupts, and follows
the INTx barber pole rules when transitting PCIn-to-PCIn busses in
the software model. MSI and MSI-X interrupts are also supported, and
these will likely catch on with newer OS as they come out. But to
start, I would expect the tried and true INTx style interrupt messaging
to be common- and that requires zero software model changes...
If one is a member of the PCI-SIG, then its a good time to hit the
website and download the PCI-Express specification. If you are not
a SIG member, good time to join, the membership information is at the
site, and the bottom line is $3000 (3K) to make your company a member.
Reasonable for most every company, and steep for individuals.
From: Amit Shah [mailto:email@example.com]
Sent: Friday, December 20, 2002 12:28 PM
To: Alan Deikman
Subject: Re: What's your bus? Summary #2
Is anybody aware of any mailing list for 3GIO / PCI Express ?
I think we definately need one !!
Alan Deikman wrote:
> David O'Shea wrote:
> > 3GIO is PCI-Express. It just got renamed when it was standardized.
> Then Amy Ledbetter chimed in:
> > 3GIO is PCI Express. http://news.com.com/2110-1001-885582.html
> Got me. I just am getting too old to keep up with you youngsters anymore.
> Overall, PCI-Express seems to have caught most people's attention. I
> haven't seen much traffic on PCI-Express on this mailing list so I assume
> there is another mailing list devoted to it? If so, is there a need for
> pci-sig mailing list anymore?
> Alan Deikman
> ZNYX Networks, Inc.