From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: ahci.c Date: Fri, 13 Jun 2008 04:49:26 -0400 Message-ID: <48523496.3090208@pobox.com> References: <48508EF1.8000304@pobox.com> Mime-Version: 1.0 Content-Type: text/plain; charset=GB2312 Content-Transfer-Encoding: 7bit Return-path: Received: from srv5.dvmed.net ([207.36.208.214]:41846 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754668AbYFMItb (ORCPT ); Fri, 13 Jun 2008 04:49:31 -0400 In-Reply-To: Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: dunneil Cc: linux-ide@vger.kernel.org dunneil wrote: > if there are two ASATA controller inside motherboard, it will cause > conflict > for BUS Master Enable bit? Do i need disable the motherboard integrated > ASATA controoller for my separate ASATA controller FPGA board? You can have as many AHCI PCI devices as you wish. Each PCI device has its own Bus Master Enable bit in the PCI Command register. Jeff