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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 A9483C0650E for ; Mon, 8 Jul 2019 01:59:54 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 649782053B for ; Mon, 8 Jul 2019 01:59:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 649782053B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 45hpYN1D6RzDqXt for ; Mon, 8 Jul 2019 11:59:52 +1000 (AEST) Received: from ozlabs.org (bilbo.ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 45hng43HVtzDqQ9 for ; Mon, 8 Jul 2019 11:19:44 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: by ozlabs.org (Postfix, from userid 1034) id 45hng32RrMz9sP2; Mon, 8 Jul 2019 11:19:43 +1000 (AEST) X-powerpc-patch-notification: thanks X-powerpc-patch-commit: dead1c845dbe97e0061dae2017eaf3bd8f8f06ee In-Reply-To: <20190626023746.94250-1-aik@ozlabs.ru> To: Alexey Kardashevskiy , linuxppc-dev@lists.ozlabs.org From: Michael Ellerman Subject: Re: [PATCH kernel v2] powerpc/pci/of: Parse unassigned resources Message-Id: <45hng32RrMz9sP2@ozlabs.org> Date: Mon, 8 Jul 2019 11:19:43 +1000 (AEST) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alexey Kardashevskiy , Alistair Popple , Sam Bobroff , Oliver O'Halloran , Paul Mackerras , David Gibson Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Wed, 2019-06-26 at 02:37:46 UTC, Alexey Kardashevskiy wrote: > The pseries platform uses the PCI_PROBE_DEVTREE method of PCI probing > which reads "assigned-addresses" of every PCI device and initializes > the device resources. However if the property is missing or zero sized, > then there is no fallback of any kind and the PCI resources remain > undiscovered, i.e. pdev->resource[] array remains empty. > > This adds a fallback which parses the "reg" property in pretty much same > way except it marks resources as "unset" which later make Linux assign > those resources proper addresses. > > This has an effect when: > 1. a hypervisor failed to assign any resource for a device; > 2. /chosen/linux,pci-probe-only=0 is in the DT so the system may try > assigning a resource. > Neither is likely to happen under PowerVM. > > Signed-off-by: Alexey Kardashevskiy Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/dead1c845dbe97e0061dae2017eaf3bd8f8f06ee cheers