From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brad Campbell Subject: Re: Is the SIL 3112 capable of PMP support? Date: Tue, 14 Nov 2006 16:29:19 +0400 Message-ID: <4559B69F.7080207@wasp.net.au> References: <455810BC.6090304@wasp.net.au> <45587548.7020808@garzik.org> <45587B3C.3080303@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from wasp.net.au ([203.190.192.17]:7570 "EHLO wasp.net.au") by vger.kernel.org with ESMTP id S965463AbWKNM3l (ORCPT ); Tue, 14 Nov 2006 07:29:41 -0500 In-Reply-To: <45587B3C.3080303@gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Tejun Heo Cc: Jeff Garzik , linux-ide@vger.kernel.org Tejun Heo wrote: > Jeff Garzik wrote: >> Brad Campbell wrote: >>> I've been planning on doing some testing with PMP's and noticed that >>> sata_sil does not support PMP. Is that a hardware limitation or just >>> that nobody has implemented it in the driver yet ? >> >> Well, it doesn't support hardware context switching. It probably >> supports PMP "the slow way" (one PMP-attached device at a time) > > I doubt 3112 can do pmp even "the slow way". It doesn't expose FIS > interface nor does it have PMP field in its SControl register. It just > can't generate PMP-aware FIS. > That answers the question nicely then. Time to upgrade to some 3124's I guess. Brad -- "Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so." -- Douglas Adams