From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from imap.sh.mvista.com (unknown [63.81.120.155]) by ozlabs.org (Postfix) with ESMTP id B368CDDDFE for ; Thu, 2 Aug 2007 00:20:38 +1000 (EST) Message-ID: <46B0972C.3020000@ru.mvista.com> Date: Wed, 01 Aug 2007 18:22:36 +0400 From: Sergei Shtylyov MIME-Version: 1.0 To: Segher Boessenkool Subject: Re: [PATCH] mark PCI resource with start 0 as unassigned References: <20061130165202.GA23205@aepfle.de> <20061204123854.GA28159@aepfle.de> <4574197A.2020204@ru.mvista.com> <4FC2EBCF-C927-435A-9BE3-E4403AFC042D@kernel.crashing.org> <45741DDE.4080509@ru.mvista.com> <20061204132124.4f7c50a9@localhost.localdomain> <52F5B831-5B40-4D40-A77F-4D7484692CAE@kernel.crashing.org> In-Reply-To: <52F5B831-5B40-4D40-A77F-4D7484692CAE@kernel.crashing.org> Content-Type: text/plain; charset=us-ascii; format=flowed Cc: linux-ide@vger.kernel.org, Olaf Hering , Alan , linuxppc-dev@ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Segher Boessenkool wrote: >> setup-pci is for SFF8038i devices. It therefore knows that for assigned >> resources they must be I/O. It also assumes that zero is not a valid I/O >> port just like zero is not a valid IRQ. Stick a real IDE resource at >> zero and drivers/ide can't cope. > But 0 _is_ a valid PCI I/O address. Do we now have to start I wasn't in PCI 2.1 (later the corresponding passage have disppeared). > using "virtual I/O addresses", analogue to the IRQ situation, > or can these bad assumptions be fixed instead? > Segher WBR, Sergei