Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 25 Sep 2002 17:37:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 25 Sep 2002 17:37:19 -0400 Received: from postino2.roma1.infn.it ([141.108.26.25]:53689 "EHLO postino2.roma1.infn.it") by vger.kernel.org with ESMTP id ; Wed, 25 Sep 2002 17:37:18 -0400 Date: Wed, 25 Sep 2002 23:42:31 +0200 (CEST) From: "davide.rossetti" Reply-To: davide.rossetti@roma1.infn.it To: Daniel Phillips cc: linux-kernel@vger.kernel.org Subject: Re: DAC960 in 2.5.38, with new changes In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-RAVMilter-Version: 8.3.1(snapshot 20020108) (postino2.roma1.infn.it) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1066 Lines: 25 On Tue, 24 Sep 2002, Daniel Phillips wrote: > On Tuesday 24 September 2002 18:54, Dave Olien wrote: > > According to the Documentation/DMA-mapping.txt file, the new > > DMA mapping interfaces should allow all PCI transfers to use 32-bit DMA > > addresses. Controllers on the PCI bus should never need to use DAC > > PCI transfers. Based on this, writel() should work even on ia64. > > A totally disgusting idea: MMX/x87 are also capable of transferring 8 > bytes in one instruction on ia32. to the north bridge. but then it's a bridge matter how to translate that access on the PCI side... I guess. regards -- ______/ Rossetti Davide INFN - Roma I - APE group \______________ pho +390649914507/412 web: http://apegate.roma1.infn.it/~rossetti fax +390649914423 email: davide.rossetti@roma1.infn.it - 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/