From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-in-02.arcor-online.net (mail-in-02.arcor-online.net [151.189.21.42]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mx.arcor.de", Issuer "Thawte Premium Server CA" (verified OK)) by ozlabs.org (Postfix) with ESMTP id 8A197DDE3A for ; Mon, 14 May 2007 23:50:30 +1000 (EST) In-Reply-To: <20070514075415.7999BDDEC8@ozlabs.org> References: <20070514075415.7999BDDEC8@ozlabs.org> Mime-Version: 1.0 (Apple Message framework v623) Content-Type: text/plain; charset=US-ASCII; format=flowed Message-Id: <246be0d2277753c0c0b61d0f4131c092@kernel.crashing.org> From: Segher Boessenkool Subject: Re: [RFC/PATCH] powerpc: Rewrite IO allocation & mapping on powerpc64 Date: Mon, 14 May 2007 15:50:07 +0200 To: Benjamin Herrenschmidt Cc: linuxppc-dev@ozlabs.org, Paul Mackerras , Anton Blanchard List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , > - Cleanup and separate tracking of the ISA space in the reserved > low 64K of IO space. No ISA -> Nothing mapped there. > I now always reserve the first 64K of IO space for the bridge with > the ISA bus on it. This is wrong -- there are systems with ISA that also have PCI devices that require 16-bit legacy I/O windows (e.g., systems with the AMD8111 chip, like Maple). Or do you mean you reserve the low 64k for the PHB? That would work in this case, but still not in general. Not sure if we care though. Segher