Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965823AbWK1UPK (ORCPT ); Tue, 28 Nov 2006 15:15:10 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965885AbWK1UPK (ORCPT ); Tue, 28 Nov 2006 15:15:10 -0500 Received: from einhorn.in-berlin.de ([192.109.42.8]:35303 "EHLO einhorn.in-berlin.de") by vger.kernel.org with ESMTP id S965818AbWK1UPI (ORCPT ); Tue, 28 Nov 2006 15:15:08 -0500 X-Envelope-From: stefanr@s5r6.in-berlin.de Message-ID: <456C98B4.9010405@s5r6.in-berlin.de> Date: Tue, 28 Nov 2006 21:14:44 +0100 From: Stefan Richter User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.8) Gecko/20061113 SeaMonkey/1.0.6 MIME-Version: 1.0 To: Robert Crocombe CC: linux-kernel , linux1394-devel Subject: Re: ieee1394: host adapter disappears on 1394 bus reset References: <4564C4C7.5060403@s5r6.in-berlin.de> <456B1C52.4040305@s5r6.in-berlin.de> <456B2DD0.4060500@s5r6.in-berlin.de> <456B680D.2000703@s5r6.in-berlin.de> In-Reply-To: X-Enigmail-Version: 0.94.0.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1476 Lines: 37 Robert Crocombe wrote: > On 11/27/06, Stefan Richter wrote: >> Posted writes are still enabled. phys_dma=0 disables only the physical >> response unit. ... > What I need is for write requests directed to > address 0 to be directed to the asynchronous unit so that I can treat > them as regular asynchronous write requests. ... > So long ways round, I think the phys_dma parameter is the proper thing > for me. Yes, correct. (Leaving posted writes on has two subtle effects which may or may not be interesting to you. 1. Write transactions will be performed as unified transactions. 2. The transaction is already complete before the controller writes to main memory. There are devices out there which behave unexpectedly with unified transactions on, and some which do so if they are off.) > And I will try and do some actual thinking about what is happening. I > was hoping to offload that work to you and simply perform mechanical > changes to the source! Rats! I'm on it, but working slowly, as usual. (I thought I get something together during your holidays, but I fought with other buggy software which crippled my main PC...) -- Stefan Richter -=====-=-==- =-== ===-- http://arcgraph.de/sr/ - 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/