From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Sat, 17 Mar 2007 13:48:34 +0000 (GMT) Received: from roasted.cubic.org ([193.108.181.130]:40667 "EHLO roasted.cubic.org") by ftp.linux-mips.org with ESMTP id S20022742AbXCQNs3 (ORCPT ); Sat, 17 Mar 2007 13:48:29 +0000 Received: from c192151.adsl.hansenet.de ([213.39.192.151] helo=cubic.org) by roasted.cubic.org with asmtp (TLSv1:RC4-MD5:128) (Exim 3.36 #1) id 1HSZDj-0007ix-00 for linux-mips@linux-mips.org; Sat, 17 Mar 2007 14:45:19 +0100 Message-ID: <45FBF0F1.70302@cubic.org> Date: Sat, 17 Mar 2007 14:45:21 +0100 From: Michael Stickel User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) Gecko/20030225 X-Accept-Language: en-us, en MIME-Version: 1.0 To: linux-mips@linux-mips.org Subject: Re: Au1500 and TI PCI1510 cardbus References: <45FBB9C7.9060800@cubic.org> In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 14521 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: michael@cubic.org Precedence: bulk X-list: linux-mips Marco Braga wrote: > I've found the datasheet of PCI1510 and the section you pointed. Sadly > I don't understand fully the problem, so I'll discuss it with out > hardware enginers. Do you have any reference to the effects of that > problem? Can it cause the hand of reads on the bus? I am sory, I meant the datasheet of the Au1500. I do not find the paragraph anymore, but can tell you more on monday. One interesting paragraph is "AMD Alchemy Au1500 Processor Data Book" - 4.3.10 "Other Notes" first paragraph. The note I meant descibes a situration where a delayed read transaction on a pci device behind a pci-pci bridge can cause to a racing condition, where the whole system stalls. The CPU does not get the chance to do anything anymore, because the PCI subsystem blocks it. Regards, Michael