From patchwork Mon Apr 27 06:37:51 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gavin Shan X-Patchwork-Id: 6278031 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: patchwork-linux-pci@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 88880BF4A6 for ; Mon, 27 Apr 2015 06:39:24 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id AED432041D for ; Mon, 27 Apr 2015 06:39:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 039AD2041A for ; Mon, 27 Apr 2015 06:39:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752841AbbD0GjV (ORCPT ); Mon, 27 Apr 2015 02:39:21 -0400 Received: from e23smtp09.au.ibm.com ([202.81.31.142]:41082 "EHLO e23smtp09.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932067AbbD0GjU (ORCPT ); Mon, 27 Apr 2015 02:39:20 -0400 Received: from /spool/local by e23smtp09.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 27 Apr 2015 16:39:18 +1000 Received: from d23dlp01.au.ibm.com (202.81.31.203) by e23smtp09.au.ibm.com (202.81.31.206) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Mon, 27 Apr 2015 16:39:17 +1000 Received: from d23relay06.au.ibm.com (d23relay06.au.ibm.com [9.185.63.219]) by d23dlp01.au.ibm.com (Postfix) with ESMTP id 19CE42CE805C for ; Mon, 27 Apr 2015 16:39:17 +1000 (EST) Received: from d23av04.au.ibm.com (d23av04.au.ibm.com [9.190.235.139]) by d23relay06.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id t3R6d8CA38535192 for ; Mon, 27 Apr 2015 16:39:16 +1000 Received: from d23av04.au.ibm.com (localhost [127.0.0.1]) by d23av04.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id t3R6cgIe013059 for ; Mon, 27 Apr 2015 16:38:43 +1000 Received: from ozlabs.au.ibm.com (ozlabs.au.ibm.com [9.192.253.14]) by d23av04.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id t3R6cgcO012391; Mon, 27 Apr 2015 16:38:42 +1000 Received: from bran.ozlabs.ibm.com (haven.au.ibm.com [9.192.253.15]) by ozlabs.au.ibm.com (Postfix) with ESMTP id 0FC34A03EB; Mon, 27 Apr 2015 16:38:07 +1000 (AEST) Received: from gwshan (shangw.ozlabs.ibm.com [10.61.2.199]) by bran.ozlabs.ibm.com (Postfix) with ESMTP id BC49A16AA01; Mon, 27 Apr 2015 16:38:06 +1000 (AEST) Received: by gwshan (Postfix, from userid 1000) id 89915941D0F; Mon, 27 Apr 2015 16:38:06 +1000 (AEST) From: Gavin Shan To: linuxppc-dev@lists.ozlabs.org Cc: linux-pci@vger.kernel.org, benh@kernel.crashing.org, bhelgaas@google.com, Gavin Shan Subject: [PATCH v3 19/21] powerpc/pci: Update bridge windows on PCI plugging Date: Mon, 27 Apr 2015 16:37:51 +1000 Message-Id: <1430116673-22500-20-git-send-email-gwshan@linux.vnet.ibm.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1430116673-22500-1-git-send-email-gwshan@linux.vnet.ibm.com> References: <1430116673-22500-1-git-send-email-gwshan@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15042706-0033-0000-0000-00000166F5BA Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP During the PCI plugging event, the PCI devices are rescanned and their IO and MMIO resources are reassigned. However, the PowerNV platform will assign PE# based on that, which depends on updating to window of bridge of the PE's primary bus. The patch updates the windows of bridge of PE's primary bus if we have valid bridge. Otherwise, we assume it's root bus or SRIOV virtual bus and PE won't be assigned during PCI plugging time. Signed-off-by: Gavin Shan --- arch/powerpc/kernel/pci-common.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index 01d2a84..cb0bb3f 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -1473,8 +1473,12 @@ void pcibios_finish_adding_to_bus(struct pci_bus *bus) /* Allocate bus and devices resources */ pcibios_allocate_bus_resources(bus); pcibios_claim_one_bus(bus); - if (!pci_has_flag(PCI_PROBE_ONLY)) - pci_assign_unassigned_bus_resources(bus); + if (!pci_has_flag(PCI_PROBE_ONLY)) { + if (bus->self) + pci_assign_unassigned_bridge_resources(bus->self); + else + pci_assign_unassigned_bus_resources(bus); + } /* Fixup EEH */ eeh_add_device_tree_late(bus);