From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from az33egw01.freescale.net (az33egw01.freescale.net [192.88.158.102]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "az33egw01.freescale.net", Issuer "Thawte Premium Server CA" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id 5D266DDED4 for ; Wed, 18 Jun 2008 07:53:11 +1000 (EST) Message-ID: <4858322C.5030402@freescale.com> Date: Tue, 17 Jun 2008 16:52:44 -0500 From: Scott Wood MIME-Version: 1.0 To: Rune Torgersen Subject: Re: PCI DMA Problems With 82xx? References: <4858113F.4050203@vecimanetworks.com> <48582CC6.60004@freescale.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Cc: Mike Winter , linuxppc-embedded@ozlabs.org List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Rune Torgersen wrote: > linuxppc-embedded-bounces+runet=innovsys.com@ozlabs.org wrote: >> Mike Winter wrote: >>> We are developing with an 8248-based platform, and we have a vendor >>> telling us that the PCI hardware is unreliable on this CPU family, in >>> particular the DMA functionality. A quick search of this list >>> doesn't turn up any horror stories, although the processor does have >>> some PCI errata listed. Does anybody have any practical experience >>> using PCI on the 8248 or similar that they can share with me? >>> Thanks. > > We're using all four PCI DMA's on 8265 and 8280 CPU's. Hmm, did he mean bus-mastering from PCI devices, or the DMA block which is documented as part of PCI on older chips, but really has nothing to do with it that I can figure out? -Scott