From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: SATA II NCQ and multi-port support for ICH7 Date: Thu, 23 Jul 2009 14:24:01 +0900 Message-ID: <4A67F3F1.4020405@kernel.org> References: <0KN6003ZATOVGH70@vms173017.mailsrvcs.net> <4A674306.9040305@pobox.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from hera.kernel.org ([140.211.167.34]:44614 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751331AbZGWFYO (ORCPT ); Thu, 23 Jul 2009 01:24:14 -0400 In-Reply-To: <4A674306.9040305@pobox.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Jeff Garzik Cc: dhdurgee@verizon.net, linux-ide@vger.kernel.org Jeff Garzik wrote: > ata_piix is loaded for legacy IDE emulation, and is limited by IDE > interface in number of supported ports. NCQ is not supported by this > interface. > > ahci driver supports "native mode", with full NCQ and all ports. > > ICH7 chip usually supports both legacy IDE and native AHCI modes. Also, IIRC, ich7 ahci doesn't support PMP. -- tejun