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=-5.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 C4686C433DB for ; Mon, 22 Feb 2021 18:00:11 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 7812164E15 for ; Mon, 22 Feb 2021 18:00:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7812164E15 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=armlinux.org.uk Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+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=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: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=lzTTCPDPDHS5V6HRNWftGnwI6fDun16NSFFjFr5rmLk=; b=2vuzNA6Vc2EsRkeZyH1Z+uCmj HKvkwXCUc4E/ZfTwg/kqQRgQVBKLAFMfkwCLnJAxlCn/xl9xWeXL0Kxaj3t9ku5Clqokft0FhQs4q WtZ9EuLJkHPVH7AHR1sz52NFm60b1/F5x60bMBLDGMTGce7Idq3ZLmrXwgcvR680rg4LycF7fetN9 l2wA19bZsiH1WrhSLJhRu6h94bBhKql497tXbg0X4hmaOxH9TFrvgntVhqvYQYU+4fa7Ub6/fFLzR wxTQzm6wPzn0Qq4I2NgH5yBx6deCBkhPK9g5D0IqxBE+OCoz6W3SFY6yMq07WrSuAT9m38Rxu233m RuKBWTm2A==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1lEFU1-00006z-4Z; Mon, 22 Feb 2021 17:58:57 +0000 Received: from pandora.armlinux.org.uk ([2001:4d48:ad52:32c8:5054:ff:fe00:142]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1lEFTy-0008FV-Jb; Mon, 22 Feb 2021 17:58:55 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=pRxdkKM/shNOUrE0VDWVoit+UMzavwHlgZAAJDI4xN4=; b=UujCKQ+crZxVjqrN529v5vjJu IKFneIJxGPv1feg6Hp0PTYC+iM7qla7kLEpYu2UIxbSqMpHW0+QjhfxBpfVrkY5lAjpieUVl+/LfA 8BmGqA22/5iUStJTFvT7acmbmsj4PxopuYW1Rqj9ztayoiVAR1w0BRcxvlE48eFuACp/crdzXR3Jm 8IXnXtIWmhXHos6KnV1x7dmYMTGMhTCRBiw7a5hSTYphslwkU4+ISXPTDZcFYHku4gwrB8zW7V8Bj 7w8k1h8EvrUr96EWUm/RAc8Ntbkc7vsB2LxNQy13In9lyz8vb2GyuJhIKru5Tx8s4iIepepI4dwXP CwTFYFc4g==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:46562) by pandora.armlinux.org.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lEFR0-0006dz-Qy; Mon, 22 Feb 2021 17:55:50 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.92) (envelope-from ) id 1lEFQz-0002Kn-Vb; Mon, 22 Feb 2021 17:55:50 +0000 Date: Mon, 22 Feb 2021 17:55:49 +0000 From: Russell King - ARM Linux admin To: Nicolas Saenz Julienne Subject: Re: RPi4 can't deal with 64 bit PCI accesses Message-ID: <20210222175549.GO1463@shell.armlinux.org.uk> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210222_125854_664141_5F9BB612 X-CRM114-Status: UNSURE ( 8.87 ) X-CRM114-Notice: Please train this message. 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: Rob Herring , Florian Fainelli , devicetree , linux-pci , Bjorn Helgaas , linux-rpi-kernel , bcm-kernel-feedback-list , linux-arm-kernel , Robin Murphy Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Feb 22, 2021 at 04:47:22PM +0100, Nicolas Saenz Julienne wrote: > [2] Things might get even weirder as the order in which the 32bit operations > are performed might matter (low/high vs high/low). Note that arm32 does not provide writeq() very purposely because it is device specific whether writing high-then-low or low-then-high is the correct approach. See linux/io-64-nonatomic-*.h -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last! _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel