From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergei Shtylyov Subject: Re: DMA errors with HTP370 IDE in <= 2.6.18.2 Date: Tue, 09 Jan 2007 15:42:23 +0300 Message-ID: <45A38DAF.6020408@ru.mvista.com> References: <45A2A0AC.1050203@berlin.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from gateway-1237.mvista.com ([63.81.120.155]:5344 "EHLO imap.sh.mvista.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1751356AbXAIMmX (ORCPT ); Tue, 9 Jan 2007 07:42:23 -0500 In-Reply-To: <45A2A0AC.1050203@berlin.de> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Michael Bueker Cc: linux-ide@vger.kernel.org Michael Bueker wrote: > In the controller's setup utility, I can choose access modes. If i > switch it from UDMA5 to PIO0, the only difference during boot is: PIO0 is outrageously slow, use PIO4 (very slow as well but at least somewhat faster). Anyway, this won't help with Linux... >> ide2: BM-DMA at 0xa000-0xa007, BIOS settings: hde:pio, hdf:pio > instead of >> ide2: BM-DMA at 0xa000-0xa007, BIOS settings: hde:DMA, hdf:DMA You should specify the option ide=nodma to the kernel to disable IDE core from using DMA. > Please help me getting DMA to work with this controller. For starters, please try the driver from 2.6.20-rc1 and (if that doesn't help) from the -mm tree. I rewrote it and it's working OK on at least my HPT370... > Thanks in advance, > ~Mik WBR, Sergei