From patchwork Wed Jan 21 00:30:15 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yijing Wang X-Patchwork-Id: 431310 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 97F8E140277 for ; Wed, 21 Jan 2015 13:33:17 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754276AbbAUCcq (ORCPT ); Tue, 20 Jan 2015 21:32:46 -0500 Received: from szxga02-in.huawei.com ([119.145.14.65]:2934 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754146AbbAUCcn (ORCPT ); Tue, 20 Jan 2015 21:32:43 -0500 Received: from 172.24.2.119 (EHLO szxeml433-hub.china.huawei.com) ([172.24.2.119]) by szxrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id CFZ97814; Wed, 21 Jan 2015 10:32:36 +0800 (CST) Received: from localhost.localdomain (10.175.100.166) by szxeml433-hub.china.huawei.com (10.82.67.210) with Microsoft SMTP Server id 14.3.158.1; Wed, 21 Jan 2015 10:32:29 +0800 From: Yijing Wang To: Bjorn Helgaas CC: Jiang Liu , , Yinghai Lu , , Marc Zyngier , , Russell King , , Thomas Gleixner , Benjamin Herrenschmidt , Rusty Russell , Tony Luck , , "David S. Miller" , "Guan Xuetao" , , , Liviu Dudau , "Arnd Bergmann" , Geert Uytterhoeven , "Yijing Wang" , Subject: [PATCH v2 20/30] PCI/sparc: Use pci_scan_root_bridge() for simplicity Date: Wed, 21 Jan 2015 08:30:15 +0800 Message-ID: <1421800225-26230-21-git-send-email-wangyijing@huawei.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1421800225-26230-1-git-send-email-wangyijing@huawei.com> References: <1421800225-26230-1-git-send-email-wangyijing@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.100.166] X-CFilter-Loop: Reflected Sender: sparclinux-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: sparclinux@vger.kernel.org Now we could use pci_scan_root_bridge() to scan pci buses, provide sparc specific pci_host_bridge_ops. Signed-off-by: Yijing Wang CC: "David S. Miller" CC: sparclinux@vger.kernel.org --- arch/sparc/kernel/pci.c | 32 ++++++++++++++++++++++---------- 1 files changed, 22 insertions(+), 10 deletions(-) diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c index d798b42..0ff5093 100644 --- a/arch/sparc/kernel/pci.c +++ b/arch/sparc/kernel/pci.c @@ -647,12 +647,25 @@ static void pci_claim_bus_resources(struct pci_bus *bus) pci_claim_bus_resources(child_bus); } +static void pci_host_bridge_of_scan_bus( + struct pci_host_bridge *host) +{ + struct pci_pbm_info *pbm = dev_get_drvdata(&host->dev); + struct device_node *node = pbm->op->dev.of_node; + + pci_of_scan_bus(pbm, node, host->bus); +} + +static struct pci_host_bridge_ops phb_ops = { + .phb_of_scan_bus = pci_host_bridge_of_scan_bus, +}; + struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm, struct device *parent) { LIST_HEAD(resources); struct device_node *node = pbm->op->dev.of_node; - struct pci_bus *bus; + struct pci_host_bridge *host; printk("PCI: Scanning PBM %s\n", node->full_name); @@ -664,23 +677,22 @@ struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm, pbm->busn.end = pbm->pci_last_busno; pbm->busn.flags = IORESOURCE_BUS; pci_add_resource(&resources, &pbm->busn); - bus = pci_create_root_bus(parent, + host = pci_scan_root_bridge(parent, PCI_DOMBUS(pbm->index, pbm->pci_first_busno), - pbm->pci_ops, pbm, &resources); - if (!bus) { - printk(KERN_ERR "Failed to create bus for %s\n", + pbm->pci_ops, pbm, &resources, &phb_ops); + if (!host) { + printk(KERN_ERR "Failed to create host bridge for %s\n", node->full_name); pci_free_resource_list(&resources); return NULL; } - pci_of_scan_bus(pbm, node, bus); - pci_bus_add_devices(bus); - pci_bus_register_of_sysfs(bus); + pci_bus_add_devices(host->bus); + pci_bus_register_of_sysfs(host->bus); - pci_claim_bus_resources(bus); + pci_claim_bus_resources(host->bus); - return bus; + return host->bus; } void pcibios_fixup_bus(struct pci_bus *pbus)