From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V5 3/4] ARM: Xilinx: base header files and assembly macros
Date: Wed, 30 Mar 2011 15:29:03 +0200 [thread overview]
Message-ID: <201103301529.03648.arnd@arndb.de> (raw)
In-Reply-To: <f4872ed7-b6e4-4050-9445-5176f5aa961a@VA3EHSMHS017.ehs.local>
On Wednesday 30 March 2011, John Linn wrote:
> Yes that makes sense. We don't have immediate plans for PCI and
> I was assuming when we add PCI we would need to change that.
>
> If you think I shouldn't put it off then I'll fix it now. My
> preference was to get the platform supported, then add more features.
Getting it fixed properly depends a bit on the PCI implementation.
I've been planning to clean up this part of the ARM architecture
for some time and I can probably do it for one more platform when
I get to it.
My idea for the multiplatform kernel is to have a global I/O space
window (maybe 1 MB) that is in the same location in the virtual
address space all the time, so any platform that wants to support
PCI with direct-mapped I/O space can simply map it in there
at boot time.
Arnd
WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de>
To: John Linn <John.Linn@xilinx.com>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux@arm.linux.org.uk,
catalin.marinas@arm.com, glikely@secretlab.ca,
jamie@jamieiles.com
Subject: Re: [PATCH V5 3/4] ARM: Xilinx: base header files and assembly macros
Date: Wed, 30 Mar 2011 15:29:03 +0200 [thread overview]
Message-ID: <201103301529.03648.arnd@arndb.de> (raw)
In-Reply-To: <f4872ed7-b6e4-4050-9445-5176f5aa961a@VA3EHSMHS017.ehs.local>
On Wednesday 30 March 2011, John Linn wrote:
> Yes that makes sense. We don't have immediate plans for PCI and
> I was assuming when we add PCI we would need to change that.
>
> If you think I shouldn't put it off then I'll fix it now. My
> preference was to get the platform supported, then add more features.
Getting it fixed properly depends a bit on the PCI implementation.
I've been planning to clean up this part of the ARM architecture
for some time and I can probably do it for one more platform when
I get to it.
My idea for the multiplatform kernel is to have a global I/O space
window (maybe 1 MB) that is in the same location in the virtual
address space all the time, so any platform that wants to support
PCI with direct-mapped I/O space can simply map it in there
at boot time.
Arnd
next prev parent reply other threads:[~2011-03-30 13:29 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1301444651-18008-1-git-send-email-john.linn@xilinx.com>
2011-03-30 0:24 ` [PATCH V5 1/4] ARM: Xilinx: Adding Xilinx board support John Linn
2011-03-30 0:24 ` John Linn
[not found] ` <1301444651-18008-2-git-send-email-john.linn@xilinx.com>
2011-03-30 0:24 ` [PATCH V5 2/4] ARM: Xilinx: Adding timer support to the platform John Linn
2011-03-30 0:24 ` John Linn
[not found] ` <1301444651-18008-3-git-send-email-john.linn@xilinx.com>
2011-03-30 0:24 ` [PATCH V5 3/4] ARM: Xilinx: base header files and assembly macros John Linn
2011-03-30 0:24 ` John Linn
2011-03-30 11:44 ` Arnd Bergmann
2011-03-30 11:44 ` Arnd Bergmann
2011-03-30 13:17 ` John Linn
2011-03-30 13:17 ` John Linn
2011-03-30 13:29 ` Arnd Bergmann [this message]
2011-03-30 13:29 ` Arnd Bergmann
2011-03-30 13:37 ` John Linn
2011-03-30 13:37 ` John Linn
2011-03-30 19:15 ` Russell King - ARM Linux
2011-03-30 19:15 ` Russell King - ARM Linux
2011-03-30 19:43 ` Arnd Bergmann
2011-03-30 19:43 ` Arnd Bergmann
[not found] ` <1301444651-18008-4-git-send-email-john.linn@xilinx.com>
2011-03-30 0:24 ` [PATCH V5 4/4] ARM: Xilinx: Adding Xilinx platform infrastructure support John Linn
2011-03-30 0:24 ` John Linn
[not found] <1298929919-510-1-git-send-email-john.linn@xilinx.com>
[not found] ` <1298929919-510-2-git-send-email-john.linn@xilinx.com>
[not found] ` <1298929919-510-3-git-send-email-john.linn@xilinx.com>
2011-02-28 21:51 ` [PATCH V5 3/4] ARM: Xilinx: base header files and assembly macros John Linn
2011-02-28 21:51 ` John Linn
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