From: Alan Cox <alan@redhat.com>
To: Arjan van de Ven <arjanv@redhat.com>
Cc: Jeff Garzik <jgarzik@pobox.com>,
Linus Torvalds <torvalds@osdl.org>,
Vladimir Kondratiev <vladimir.kondratiev@intel.com>,
Gabriel Paubert <paubert@iram.es>,
linux-kernel@vger.kernel.org, Alan Cox <alan@redhat.com>,
Marcelo Tosatti <marcelo@conectiva.com.br>,
Martin Mares <mj@ucw.cz>,
zaitcev@redhat.com, hch@infradead.org
Subject: Re: PCI Express support for 2.4 kernel
Date: Wed, 17 Dec 2003 18:06:17 -0500 [thread overview]
Message-ID: <20031217230617.GA10132@devserv.devel.redhat.com> (raw)
In-Reply-To: <20031217082235.GA24027@devserv.devel.redhat.com>
On Wed, Dec 17, 2003 at 09:22:35AM +0100, Arjan van de Ven wrote:
> > Any PCI-Ex drivers would obviously _know_ they are PCI Ex, and they
> > could communicate that by virtue of simply using new functions. Older
> > drivers for older hardware would use the old API and not care...
> > Further, PCI-Ex operations are already basically readl/writel anyway, so
> > going through the forest of pci_cfg_ops pointers and such would just add
> > needless layering.
>
> BUT powermanagement and co will need to potentially do stuff too with the
> config space...
And X11 will want to access it via /proc interfaces. And someone will eventually
go and design a different way to access PCI-EX for their hardware 8)
The PCI layer is a nice abstraction and config space is slow anyway
next prev parent reply other threads:[~2003-12-17 23:06 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-14 20:00 PCI Express support for 2.4 kernel Vladimir Kondratiev
2003-12-14 20:46 ` Jeff Garzik
2003-12-15 10:01 ` Vladimir Kondratiev
2003-12-15 10:31 ` Gabriel Paubert
2003-12-15 12:44 ` Vladimir Kondratiev
2003-12-15 13:15 ` Arjan van de Ven
2003-12-15 13:58 ` Vladimir Kondratiev
2003-12-15 14:31 ` Arjan van de Ven
2003-12-15 14:44 ` Brian Gerst
2003-12-15 18:40 ` Greg KH
2003-12-15 19:23 ` Alan Cox
2003-12-15 20:00 ` Linus Torvalds
2003-12-16 10:20 ` Vladimir Kondratiev
2003-12-16 16:47 ` Linus Torvalds
2003-12-17 6:30 ` Vladimir Kondratiev
2003-12-17 6:46 ` Linus Torvalds
2003-12-17 6:55 ` Jeff Garzik
2003-12-17 7:24 ` Vladimir Kondratiev
2003-12-17 16:17 ` Linus Torvalds
2003-12-17 8:22 ` Arjan van de Ven
2003-12-17 10:35 ` Martin Mares
2003-12-17 23:06 ` Alan Cox [this message]
2003-12-17 10:08 ` Geert Uytterhoeven
2003-12-17 15:54 ` Linus Torvalds
2003-12-17 16:14 ` Geert Uytterhoeven
2003-12-17 17:44 ` Dan Hopper
2003-12-17 18:14 ` Vladimir Kondratiev
2003-12-17 21:44 ` Martin Mares
2003-12-16 17:10 ` Jeff Garzik
2003-12-16 17:48 ` Arjan van de Ven
2003-12-16 17:55 ` Jeff Garzik
2003-12-16 22:39 ` Vladimir Kondratiev
2003-12-17 0:12 ` Richard B. Johnson
2003-12-16 21:59 ` Vladimir Kondratiev
2003-12-16 17:45 ` Greg KH
2003-12-16 22:14 ` Vladimir Kondratiev
2003-12-17 10:05 ` Geert Uytterhoeven
2003-12-15 15:57 ` Vladimir Kondratiev
2003-12-15 10:42 ` Martin Mares
2003-12-15 10:07 ` Greg KH
2003-12-15 11:20 ` Vladimir Kondratiev
[not found] <12InT-wQ-5@gated-at.bofh.it>
[not found] ` <135Nw-5gv-3@gated-at.bofh.it>
[not found] ` <137wc-q1-23@gated-at.bofh.it>
2003-12-15 21:56 ` Andi Kleen
2003-12-15 22:48 ` Vladimir Kondratiev
2003-12-15 23:06 ` Andi Kleen
2003-12-15 23:14 ` Greg KH
-- strict thread matches above, loose matches on Subject: below --
2003-12-15 20:08 Nakajima, Jun
[not found] <Pine.LNX.4.44.0312150917170.32061-100000@coffee.psychology.mcmaster.ca>
2003-12-15 15:52 ` Vladimir Kondratiev
2003-12-15 16:08 ` Kevin P. Fleming
2003-12-15 16:38 ` Vladimir Kondratiev
2003-12-15 16:55 ` Richard B. Johnson
2003-12-15 17:08 ` Tomas Szepe
2003-12-15 18:03 ` Richard B. Johnson
2003-12-15 18:15 ` Tomas Szepe
2003-12-15 18:35 ` Richard B. Johnson
2003-12-15 18:43 ` Keith Owens
2003-12-15 18:45 ` Tomas Szepe
2003-12-15 17:24 ` Vladimir Kondratiev
2003-12-15 17:22 ` Randy.Dunlap
2003-12-15 18:16 ` Greg KH
2003-12-15 18:20 ` Richard B. Johnson
2003-12-15 17:09 ` Keith Owens
2003-12-15 17:38 ` Tomas Szepe
2003-12-15 18:16 ` Keith Owens
2003-12-15 18:23 ` Tomas Szepe
[not found] <12KJ6-4F2-13@gated-at.bofh.it>
[not found] ` <12Lvu-5X5-5@gated-at.bofh.it>
[not found] ` <12XQ2-7Vs-9@gated-at.bofh.it>
2003-12-15 10:17 ` Andi Kleen
[not found] ` <12YsA-nt-1@gated-at.bofh.it>
[not found] ` <130kQ-3A0-13@gated-at.bofh.it>
[not found] ` <130Xy-4Ia-3@gated-at.bofh.it>
[not found] ` <131Ac-5Qy-3@gated-at.bofh.it>
[not found] ` <137cD-8eg-9@gated-at.bofh.it>
[not found] ` <13kD2-1kF-11@gated-at.bofh.it>
2003-12-16 17:44 ` Andi Kleen
[not found] ` <13r1S-3FB-11@gated-at.bofh.it>
[not found] ` <13vyg-43O-7@gated-at.bofh.it>
2003-12-16 22:18 ` Andi Kleen
[not found] ` <13qIi-31G-1@gated-at.bofh.it>
[not found] ` <13DvZ-2RY-9@gated-at.bofh.it>
[not found] ` <13DFw-3a8-9@gated-at.bofh.it>
[not found] ` <13DPq-3s4-7@gated-at.bofh.it>
[not found] ` <13Fem-6iy-7@gated-at.bofh.it>
[not found] ` <13SY1-35z-19@gated-at.bofh.it>
2003-12-17 23:22 ` Andi Kleen
2003-12-17 23:38 ` Alan Cox
[not found] ` <12XQc-7Vs-29@gated-at.bofh.it>
[not found] ` <12Z5u-1tG-11@gated-at.bofh.it>
2003-12-15 14:58 ` Andi Kleen
2003-12-15 15:40 ` Vladimir Kondratiev
[not found] <3FDCA569.5070006@pobox.com>
2003-12-15 4:47 ` Pete Zaitcev
2003-12-14 17:28 Vladimir Kondratiev
2003-12-15 7:48 ` Christoph Hellwig
2003-12-15 18:26 ` Linus Torvalds
2003-12-15 20:03 ` Jeff Garzik
2003-12-15 22:00 ` Linus Torvalds
2003-12-16 4:53 ` Jeff Garzik
2003-12-15 20:21 ` Vladimir Kondratiev
2003-12-15 20:36 ` Jeff Garzik
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