From: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
Martin Mares <mj@ucw.cz>, Richard Henderson <rth@twiddle.net>,
"Wiedemeier, Jeff" <Jeff.Wiedemeier@hp.com>,
Linux Kernel Development <linux-kernel@vger.kernel.org>
Subject: Re: [patch 2.5] VGA IO on systems with multiple PCI IO domains
Date: Tue, 28 Jan 2003 20:33:09 +0300 [thread overview]
Message-ID: <20030128203309.A939@jurassic.park.msu.ru> (raw)
In-Reply-To: <1043774595.536.4.camel@zion.wanadoo.fr>; from benh@kernel.crashing.org on Tue, Jan 28, 2003 at 06:23:15PM +0100
On Tue, Jan 28, 2003 at 06:23:15PM +0100, Benjamin Herrenschmidt wrote:
> Ok, if I understand properly, all we have to do on PPC is to implement a
> pci_request_legacy_resource() that will do the right thing for legacy
> VGA memory as well ?
Exactly.
> Then, please, check the return value of pci_request_legacy_resource()
> for getting to the VGA memory. Some machines (typically PowerMacs)
> simply don't give you a way to generate PCI cycles to those low memory
> addresses (you can't do VGA on those).
I agree, it certainly needs to be fixed.
The reason why I didn't it is that i386 has 0xa0000-0xbfffff region already
claimed (somewhere in arch code?), I haven't looked into this yet.
Ivan.
next prev parent reply other threads:[~2003-01-28 17:24 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-26 15:13 Ivan Kokshaysky
2003-01-26 21:45 ` Martin Mares
2003-01-26 23:40 ` Benjamin Herrenschmidt
2003-01-27 9:46 ` Martin Mares
2003-01-27 10:40 ` Ivan Kokshaysky
2003-01-27 17:55 ` Benjamin Herrenschmidt
2003-01-27 22:17 ` Ivan Kokshaysky
2003-01-28 9:32 ` Geert Uytterhoeven
2003-01-28 10:24 ` Ivan Kokshaysky
2003-01-28 10:27 ` Geert Uytterhoeven
2003-01-28 10:40 ` Ivan Kokshaysky
2003-01-28 17:10 ` Ivan Kokshaysky
2003-01-28 17:23 ` Benjamin Herrenschmidt
2003-01-28 17:33 ` Ivan Kokshaysky [this message]
2003-01-29 16:06 ` Ivan Kokshaysky
2003-01-29 18:15 ` James Simmons
2003-02-05 11:12 ` Ivan Kokshaysky
2003-03-12 19:08 ` Jesse Barnes
2003-01-27 10:12 ` Ivan Kokshaysky
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