From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_2 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F4080C43603 for ; Mon, 9 Dec 2019 18:36:57 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BC7F8207FF for ; Mon, 9 Dec 2019 18:36:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Y+P2Cqsk" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BC7F8207FF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=uy2xlyFCZlZjWq0n1oA8jrRXHrJeAZY6+YixAIMgDSo=; b=Y+P2CqskkMzX9k 3FftVTejdRBpqcqGN50G9c8nnFOE1zlcpp64bhe+T3JGUXUuwI4+a1txU3ST0ReMh+ZZbkdKMgWUt l5YGCcMdQaICdz497CgF9wSmkXOxGEP/jjOKddJ+5Neul3mW9ryOpycoqTnQtdFpE9R4bfCIPx66n kPAyiEpwhMx77U9ILbVr2AS1uNEufFIytUSNJCLYC6LRjRXaFWzD0DOxrcv1x8xbm5PovAa7E1sSi ow/xSxLeavUYHFivkdEN1nX+AAit1wkJq9tS9t8UMjgf0IisvW4A3LA1oZWtAbNG9wGMSt+qH7wAf YJU60hTr8AJ2mzxSSvmQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1ieNtm-0002Kc-VE; Mon, 09 Dec 2019 18:36:46 +0000 Received: from inca-roads.misterjones.org ([213.251.177.50]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ieNtk-0002JR-0O for linux-arm-kernel@lists.infradead.org; Mon, 09 Dec 2019 18:36:45 +0000 Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=why) by cheepnis.misterjones.org with esmtpsa (TLSv1.2:AES256-GCM-SHA384:256) (Exim 4.80) (envelope-from ) id 1ieNtd-0005gq-O4; Mon, 09 Dec 2019 19:36:37 +0100 Date: Mon, 9 Dec 2019 18:36:36 +0000 From: Marc Zyngier To: Ray Jui Subject: Re: [PATCH 0/2] Add iProc IDM device support Message-ID: <20191209183636.6d708bfd@why> In-Reply-To: References: <20191202233127.31160-1-ray.jui@broadcom.com> <20191207173914.353f768d@why> Organization: Approximate X-Mailer: Claws Mail 3.17.4 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: ray.jui@broadcom.com, robh+dt@kernel.org, mark.rutland@arm.com, devicetree@vger.kernel.org, rayagonda.kokatanur@broadcom.com, linux-kernel@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, linux-arm-kernel@lists.infradead.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on cheepnis.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191209_103644_197530_C6114B30 X-CRM114-Status: GOOD ( 13.38 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Rayagonda Kokatanur , linux-kernel@vger.kernel.org, Rob Herring , bcm-kernel-feedback-list@broadcom.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, 9 Dec 2019 10:02:53 -0800 Ray Jui wrote: > On 12/7/19 9:39 AM, Marc Zyngier wrote: > > On Mon, 2 Dec 2019 15:31:25 -0800 > > Ray Jui wrote: > > > >> The Broadcom iProc IDM device allows control and monitoring of ASIC internal > >> bus transactions. Most importantly, it can be configured to detect bus > >> transaction timeout. In such case, critical information such as transaction > >> address that caused the error, bus master ID of the transaction that caused > >> the error, and etc., are made available from the IDM device. > > > > This seems to have many of the features of an EDAC device reporting > > uncorrectable errors. > > > > Is there any reason why it is not implemented as such? > > > > Thanks, > > > > M. > > > > I thought EDAC errors (in fact, in our case, that's fatal rather than > uncorrectable) are mostly for DDR. Is my understanding incorrect? No, they are for HW errors in general. There is no real limitation of scope, as far as I understand. Recently, the Annapurna guys came up with a similar HW block, and were convinced to make it an EDAC device. See [1] for details. Thanks, M. [1] https://lore.kernel.org/linux-devicetree/1570707681-865-1-git-send-email-talel@amazon.com/ -- Jazz is not dead. It just smells funny... _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel