From patchwork Fri Mar 16 12:55:36 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Christian Zigotzky X-Patchwork-Id: 10287047 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 0CEB9601A0 for ; Fri, 16 Mar 2018 12:55:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F2870287F4 for ; Fri, 16 Mar 2018 12:55:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E6E5E2891F; Fri, 16 Mar 2018 12:55:48 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D3F28287F4 for ; Fri, 16 Mar 2018 12:55:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752522AbeCPMzp (ORCPT ); Fri, 16 Mar 2018 08:55:45 -0400 Received: from mo4-p00-ob.smtp.rzone.de ([81.169.146.162]:17740 "EHLO mo4-p00-ob.smtp.rzone.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752497AbeCPMzn (ORCPT ); Fri, 16 Mar 2018 08:55:43 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1521204941; s=strato-dkim-0002; d=xenosoft.de; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:Date:Message-ID: References:To:From:Subject:X-RZG-CLASS-ID:X-RZG-AUTH; bh=GR4wA33KNX0nCK9qZfO2QEsYjlzAoDmK+zqlFQO2lDY=; b=YTbRwAatgSZbqJWaCkZJrbZNI7NTLxOj6RQVyYMC9XolXwZ0v8kpdD2iujI6MMKz7D Vg2rZlhAbuj9JMzTjDg6D1RDn2KV0DfBTbVRXvP8Ib3yEjO4jno0/kFg+/NbuZOZ6oqj d2sZzWjnKdG/boMosCbTgSWVcbYJevRpbcKrdnXXTJM038EQnKU7BxuOeLehK82kjOh1 fHdgYfAGCLJu6j/2hoZsMje1yHIncCw4Na2D8mKtBcZMG0p0QiGhm8jishWRSHqDv6GI GxaTWLdLYJVg/S60/bM0Up7Y/co+IEixq+oOBnOvg8GbH6Lw9jGQnOfGNcbHyqqFvqIi eqIQ== X-RZG-AUTH: :L2QefEenb+UdBJSdRCXu93KJ1bmSGnhMdmOod1DhGM4l4Hio94KKxRySf+VvAflxJtIS6kwmwtuC X-RZG-CLASS-ID: mo00 Received: from [192.168.1.134] (ppp-188-174-88-170.dynamic.mnet-online.de [188.174.88.170]) by smtp.strato.de (RZmta 42.18 DYNA|AUTH) with ESMTPSA id f061ebu2GCtb0En (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (curve secp521r1 with 521 ECDH bits, eq. 15360 bits RSA)) (Client did not present a certificate); Fri, 16 Mar 2018 13:55:37 +0100 (CET) Subject: [PATCH 1/1] PCI set flag PCI_SCAN_ALL_PCIE_DEVS for P.A. Semi boards From: Christian Zigotzky To: Bjorn Helgaas , Bjorn Helgaas , linux-pci@vger.kernel.org, linuxppc-dev , Olof Johansson References: <87tvxl15qx.fsf@concordia.ellerman.id.au> <4cfe3cc0-7fe3-9774-7d20-1b7fcb7aa910@xenosoft.de> <28b43e1a-3643-9edb-7123-be1cb0dc846a@xenosoft.de> <527175f7-8a13-37a1-9f0a-0b918aeebd64@xenosoft.de> <20171130224243.GB19640@bhelgaas-glaptop.roam.corp.google.com> <406ba7c4-7305-4069-227f-81afed202e47@xenosoft.de> <20171201232716.GA18780@bhelgaas-glaptop.roam.corp.google.com> Message-ID: <639e975f-1b3a-4f85-9a40-13fe2473fc28@xenosoft.de> Date: Fri, 16 Mar 2018 13:55:36 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: Content-Language: de-DE Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Bjorn Helgaas created a patch for making PCI_SCAN_ALL_PCIE_DEVS work for Root Ports as well as Downstream. Previously PCI_SCAN_ALL_PCIE_DEVS (set by quirks or the "pci=pcie_scan_all" kernel parameter) only affected Switch Downstream Ports, not Root Ports. The problem is, that we have to add always the boot argument "pci=pcie_scan_all" for using Bjorn's improvements. Without the boot argument "pci=pcie_scan_all", the kernel doesn't boot on P.A. Semi boards with SB600 chipset (SB600 chipset is connected via PCIe x4 to the P.A. Semi’s PA6T-1682M System-on-a-Chip) because the kernel can't find any drives connected to the SB600 anymore. Olof Johansson has created a patch for executing "pci=pcie_scan_all" automatically on P.A. Semi boards. With his patch, we don't need to add 'pci=pcie_scan_all' to the kernel boot arguments anymore. --- arch/powerpc/platforms/pasemi/pci.c | 2 ++  1 file changed, 2 insertions(+) -- diff --git a/arch/powerpc/platforms/pasemi/pci.c b/arch/powerpc/platforms/pasemi/pci.c index 5ff6108..ea54ed2 100644 --- a/arch/powerpc/platforms/pasemi/pci.c +++ b/arch/powerpc/platforms/pasemi/pci.c @@ -224,6 +224,8 @@ void __init pas_pci_init(void)          return;      } +    pci_set_flags(PCI_SCAN_ALL_PCIE_DEVS); +      for (np = NULL; (np = of_get_next_child(root, np)) != NULL;)          if (np->name && !strcmp(np->name, "pxp") && !pas_add_bridge(np))              of_node_get(np);