From: Jeff Garzik <jgarzik@mandrakesoft.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Russell King <rmk@arm.linux.org.uk>,
David Woodhouse <dwmw2@infradead.org>,
David Howells <dhowells@redhat.com>,
Jes Sorensen <jes@sunsite.dk>,
linux-kernel@vger.kernel.org, arjanv@redhat.com,
Linus Torvalds <torvalds@transmeta.com>
Subject: Re: [RFC] I/O Access Abstractions
Date: Mon, 02 Jul 2001 22:06:29 -0400 [thread overview]
Message-ID: <3B4128A5.636ED850@mandrakesoft.com> (raw)
In-Reply-To: <E15HA1D-0006W0-00@the-village.bc.nu>
Alan Cox wrote:
>
> > > > You pass a single cookie to the readb code
> > > > Odd platforms decode it
> > >
> > > Last time I checked, ioremap didn't work for inb() and outb().
> >
> > It should :)
>
> it doesnt need to.
>
> pci_find_device returns the io address and can return a cookie, ditto
> isapnp etc
Is the idea here to mitigate the amount of driver code changes, or
something else?
If you are sticking a cookie in there behind the scenes, why go ahead
and use ioremap?
We -already- have a system which does remapping and returns cookies and
such for PCI mem regions. Why not use it for I/O regions too?
Jeff
--
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 2:06 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 [this message]
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
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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