Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422962AbWJQAE2 (ORCPT ); Mon, 16 Oct 2006 20:04:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1422957AbWJQAE2 (ORCPT ); Mon, 16 Oct 2006 20:04:28 -0400 Received: from rtr.ca ([64.26.128.89]:40465 "EHLO mail.rtr.ca") by vger.kernel.org with ESMTP id S1422954AbWJQAE1 (ORCPT ); Mon, 16 Oct 2006 20:04:27 -0400 Message-ID: <45341E08.9040100@rtr.ca> Date: Mon, 16 Oct 2006 20:04:24 -0400 From: Mark Lord User-Agent: Thunderbird 1.5.0.7 (X11/20060909) MIME-Version: 1.0 To: Robert Hancock Cc: Mark Lord , Jens Axboe , Allen Martin , Jeff Garzik , linux-kernel , linux-ide@vger.kernel.org, prakash@punnoor.de Subject: Re: [RFC PATCH] nForce4 ADMA with NCQ: It's aliiiive.. References: <452C7C1D.3040704@shaw.ca> <20061011103038.GK6515@kernel.dk> <452F053B.2000906@shaw.ca> <4533B0B3.8070205@rtr.ca> <4534185C.9060401@shaw.ca> In-Reply-To: <4534185C.9060401@shaw.ca> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 721 Lines: 20 Robert Hancock wrote: > Mark Lord wrote: >> Robert Hancock wrote: .. >> Be careful of that. The original PDC hardware for ADMA still had >> the "don't cross a 64KB boundary" requirement. .. > That is part of the ADMA spec - but in that case, how come the > pdc_adma.c driver sets the dma_boundary in the SCSI host template to > 4GB? That seems wrong. Ah, you are correct. My memory is fading of such things. The PDC parts are good for 2^34 transfer sizes (bytes). Cheers - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/