From: Jeff Garzik <jgarzik@mandrakesoft.com>
To: David Howells <dhowells@redhat.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, linux-kernel@vger.kernel.org
Subject: Re: [RFC] I/O Access Abstractions
Date: Tue, 03 Jul 2001 04:00:09 -0400 [thread overview]
Message-ID: <3B417B89.6FE1D06A@mandrakesoft.com> (raw)
In-Reply-To: <3911.994146916@warthog.cambridge.redhat.com>
David Howells wrote:
> For example, one board I've got doesn't allow you to do a straight
> memory-mapped I/O access to your PCI device directly, but have to reposition a
> window in the CPU's memory space over part of the PCI memory space first, and
> then hold a spinlock whilst you do it.
Yuck. Does that wind up making MMIO slower than PIO, on this board?
--
Jeff Garzik | "I respect faith, but doubt is
Building 1024 | what gives you an education."
MandrakeSoft | -- Wilson Mizner
next prev parent reply other threads:[~2001-07-03 8:00 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-06-28 13:13 [RFC] I/O Access Abstractions David Howells
2001-06-28 13:32 ` Alan Cox
2001-06-28 13:55 ` David Woodhouse
2001-06-28 16:02 ` Jes Sorensen
2001-06-29 8:31 ` David Howells
2001-06-29 21:02 ` Jes Sorensen
2001-07-02 14:22 ` David Woodhouse
2001-07-02 15:57 ` David Howells
2001-07-02 16:17 ` David Woodhouse
2001-07-02 16:20 ` Alan Cox
2001-07-02 16:41 ` David Woodhouse
2001-07-02 16:56 ` Alan Cox
2001-07-02 18:22 ` Russell King
2001-07-02 18:26 ` Jeff Garzik
2001-07-02 20:10 ` Alan Cox
2001-07-02 22:08 ` Benjamin Herrenschmidt
2001-07-02 22:15 ` Alan Cox
2001-07-02 23:54 ` Benjamin Herrenschmidt
2001-07-03 12:02 ` Alan Cox
2001-07-03 14:38 ` Benjamin Herrenschmidt
2001-07-03 2:06 ` Jeff Garzik
2001-07-03 8:38 ` David Howells
2001-07-07 11:27 ` Geert Uytterhoeven
2001-07-03 8:15 ` David Howells
2001-07-03 8:22 ` Jeff Garzik
2001-07-03 8:31 ` Jeff Garzik
2001-07-03 9:00 ` David Howells
2001-07-03 9:29 ` Jeff Garzik
2001-07-02 22:10 ` Benjamin Herrenschmidt
2001-07-03 8:04 ` David Howells
2001-07-03 7:55 ` David Howells
2001-07-03 8:00 ` Jeff Garzik [this message]
2001-07-03 8:07 ` David Howells
2001-07-03 11:53 ` Alan Cox
2001-07-07 11:26 ` Geert Uytterhoeven
[not found] <20010702191129.A29246@flint.arm.linux.org.uk>
2001-07-03 8:12 ` David Howells
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