From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id CB82FDDE11 for ; Mon, 21 Jul 2008 04:44:03 +1000 (EST) Date: Sun, 20 Jul 2008 11:43:58 -0700 From: Arjan van de Ven To: Stefan Richter Subject: Re: dma_alloc_coherent() on PPC32: physical addresses above 2G possible? Message-ID: <20080720114358.6c88e048@infradead.org> In-Reply-To: <488385A7.4010509@s5r6.in-berlin.de> References: <488385A7.4010509@s5r6.in-berlin.de> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Cc: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Sun, 20 Jul 2008 20:36:23 +0200 Stefan Richter wrote: > PS: I don't want to set the DMA mask of this device to > DMA_31BIT_MASK because that would be detrimental to other functions > of the device. It's a TI TSB43AB22A FireWire controller. Hi, just want to mention that you can set the coherent mask separately from the generic mask... is that sufficient for your load? (you can even set it just for this allocation..) -- If you want to reach me at my work email, use arjan@linux.intel.com For development, discussion and tips for power savings, visit http://www.lesswatts.org