From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: FW: ICH10R PMP support Date: Mon, 23 Jun 2008 18:56:38 +0900 Message-ID: <485F7356.5050605@kernel.org> References: <023701c8d4dd$d737fa10$85a7ee30$@com> <485F6830.1040000@pobox.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from hera.kernel.org ([140.211.167.34]:41088 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752904AbYFWJ5E (ORCPT ); Mon, 23 Jun 2008 05:57:04 -0400 In-Reply-To: <485F6830.1040000@pobox.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Mark Lord Cc: Milo Medin , linux-ide@vger.kernel.org Mark Lord wrote: > I don't know anything about the 88SE6145 (isn't that an AHCI clone?), > but the 7042 chip under Linux is *now* a very safe (and good) bet. > > It has full kernel support for hot-plug, PMP with FIS-based switching, > and employs a decent host command queue mechansim. I believe all of the > errata workarounds are now in place for this chip. > > Performance is about as good as it gets under Linux, > though there's still another microsecond or so to be shaved > away from the IRQ handling in the next cycle. > > Message-Switched-Interrupts (MSI) is there, but not fully supported yet. > This also will likely get cleaned up in the next cycle. > > The 7042 is the best of the Marvell chips, for Linux. How high does it go bandwidth-wise? Thanks. -- tejun