From mboxrd@z Thu Jan 1 00:00:00 1970 From: arnd@arndb.de (Arnd Bergmann) Date: Wed, 30 Mar 2011 15:29:03 +0200 Subject: [PATCH V5 3/4] ARM: Xilinx: base header files and assembly macros In-Reply-To: References: <1301444651-18008-1-git-send-email-john.linn@xilinx.com> <201103301344.45307.arnd@arndb.de> Message-ID: <201103301529.03648.arnd@arndb.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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