From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: Enabling AHCI on ICH7 without BIOS support Date: Thu, 16 Aug 2007 22:19:24 +0900 Message-ID: <46C44EDC.6050904@gmail.com> References: <46C1A999.5070109@dastyle.net> <46C441CB.8020805@gmail.com> <46C44A05.9040302@dastyle.net> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from rv-out-0910.google.com ([209.85.198.184]:36770 "EHLO rv-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761490AbXHPNTg (ORCPT ); Thu, 16 Aug 2007 09:19:36 -0400 Received: by rv-out-0910.google.com with SMTP id k20so203161rvb for ; Thu, 16 Aug 2007 06:19:36 -0700 (PDT) In-Reply-To: <46C44A05.9040302@dastyle.net> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Jonathan Bastien-Filiatrault Cc: jgarzik@pobox.com, linux-ide@vger.kernel.org Jonathan Bastien-Filiatrault wrote: > So far, I have managed to patch up the AHCI driver to initialize the > ICH7 AHCI state machine as the BIOS would do (as per the AHCI spec > instructions). This involves mapping ABAR and such. So far, I have > gotten the AHCI driver to detect the chip properly, but it does not > detect any drives. It looks like I will need to further initialize the > chip. I think there might be a chance of success, but it will involve > manually specifying which ports are present via a module parameter. You probably need to program PCS. -- tejun