From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Jon Smirl <jonsmirl@gmail.com>
Cc: Jesse Barnes <jbarnes@sgi.com>, Andrew Morton <akpm@osdl.org>,
Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] quiet non-x86 option ROM warnings
Date: Wed, 16 Feb 2005 15:00:51 +1100 [thread overview]
Message-ID: <1108526452.13394.90.camel@gaston> (raw)
In-Reply-To: <9e473391050215170874051b29@mail.gmail.com>
On Tue, 2005-02-15 at 20:08 -0500, Jon Smirl wrote:
> There is a new io resource flag as part of the pci rom code,
> IORESOURCE_ROM_SHADOW, that is used on x86. If IORESOURCE_ROM_SHADOW
> is set, you should ignore the physical ROM and use the copy at C000:0.
> Can we build an equivalent flag for PPC? On x86 arch specific code
> determines the boot video device and sets the flag.
>
> Acutally, if radeon and rage fb drivers were using the PCI ROM support
> (drivers/pci/rom.c) would they be having this problem? The 55AA check
> is in the PCI ROM support too.
No, such a flag wouldn't make sense as it's not really a ROM shadow. In
fact, the driver is just part of the main open firmware, there are no
tables we can get to like x86 etc... however, we can access properties
in the open firmware device-tree that have been set by the OF driver. So
it's a completely different mecanism. A ROM shadow bit wouldn't make
sense.
Ben.
next prev parent reply other threads:[~2005-02-16 4:02 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-15 23:57 [PATCH] quiet non-x86 option ROM warnings Jesse Barnes
2005-02-16 0:36 ` Jon Smirl
2005-02-16 0:45 ` Jesse Barnes
2005-02-16 1:00 ` Benjamin Herrenschmidt
2005-02-16 1:00 ` Benjamin Herrenschmidt
2005-02-16 1:08 ` Jon Smirl
2005-02-16 1:57 ` Jesse Barnes
2005-02-16 4:00 ` Benjamin Herrenschmidt [this message]
2005-02-16 1:03 ` Benjamin Herrenschmidt
2005-02-16 23:54 ` Jesse Barnes
2005-02-17 0:48 ` Benjamin Herrenschmidt
2005-02-17 16:33 ` Jon Smirl
2005-02-17 17:29 ` Jesse Barnes
2005-02-17 17:32 ` Jon Smirl
2005-02-17 17:41 ` Jesse Barnes
2005-02-17 17:45 ` Jesse Barnes
2005-02-17 17:56 ` Jon Smirl
2005-02-17 22:48 ` Benjamin Herrenschmidt
2005-02-17 22:47 ` Benjamin Herrenschmidt
2005-02-17 22:59 ` Jon Smirl
2005-02-17 23:00 ` Jesse Barnes
2005-02-17 23:04 ` Benjamin Herrenschmidt
2005-02-17 23:20 ` Andrew Vasquez
2005-02-17 22:45 ` Benjamin Herrenschmidt
2005-02-17 22:56 ` Jon Smirl
2005-02-18 12:09 ` Gabriel Paubert
2005-02-18 16:50 ` Jon Smirl
2005-09-04 13:27 ` Olaf Hering
2005-09-04 14:20 ` Andreas Schwab
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