From patchwork Mon Mar 23 12:40:43 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yijing Wang X-Patchwork-Id: 6073231 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id CB3D49F2A9 for ; Mon, 23 Mar 2015 13:07:52 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 00DC8201FE for ; Mon, 23 Mar 2015 13:07:52 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 221CE20131 for ; Mon, 23 Mar 2015 13:07:51 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Ya21I-0001oZ-UV; Mon, 23 Mar 2015 13:03:52 +0000 Received: from szxga03-in.huawei.com ([119.145.14.66]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Ya1qn-0007bo-Ge for linux-arm-kernel@lists.infradead.org; Mon, 23 Mar 2015 12:53:03 +0000 Received: from 172.24.2.119 (EHLO szxeml434-hub.china.huawei.com) ([172.24.2.119]) by szxrg03-dlp.huawei.com (MOS 4.4.3-GA FastPath queued) with ESMTP id BDN03947; Mon, 23 Mar 2015 20:44:08 +0800 (CST) Received: from localhost.localdomain (10.175.100.166) by szxeml434-hub.china.huawei.com (10.82.67.225) with Microsoft SMTP Server id 14.3.158.1; Mon, 23 Mar 2015 20:43:57 +0800 From: Yijing Wang To: Bjorn Helgaas Subject: [PATCH v7 17/31] x86/PCI: Refine pci_acpi_scan_root() with generic pci_host_bridge Date: Mon, 23 Mar 2015 20:40:43 +0800 Message-ID: <1427114457-16687-18-git-send-email-wangyijing@huawei.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1427114457-16687-1-git-send-email-wangyijing@huawei.com> References: <1427114457-16687-1-git-send-email-wangyijing@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.100.166] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020201.55100A98.0168, ss=1, re=0.001, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 3bd2c6191119e1112dda1ec57027757a X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150323_055301_962803_55E79625 X-CRM114-Status: GOOD ( 10.76 ) X-Spam-Score: -2.3 (--) Cc: Liviu Dudau , Rusty Russell , Russell King , Arnd Bergmann , Marc Zyngier , linux-pci@vger.kernel.org, x86@kernel.org, linux-m68k@lists.linux-m68k.org, linux-kernel@vger.kernel.org, "David S. Miller" , linux-alpha@vger.kernel.org, Tony Luck , Geert Uytterhoeven , Benjamin Herrenschmidt , Yijing Wang , linux-ia64@vger.kernel.org, Thomas Gleixner , Guan Xuetao , Yinghai Lu , Jiang Liu , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 Signed-off-by: Yijing Wang CC: Thomas Gleixner CC: x86@kernel.org --- arch/x86/pci/acpi.c | 37 +++++++++++++++++++++---------------- 1 files changed, 21 insertions(+), 16 deletions(-) diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c index d2655d5..877acaf 100644 --- a/arch/x86/pci/acpi.c +++ b/arch/x86/pci/acpi.c @@ -349,6 +349,19 @@ static void probe_pci_root_info(struct pci_root_info *info, entry->res->name = info->name; } +static int pci_host_bridge_prepare(struct pci_host_bridge *bridge) +{ + struct pci_sysdata *sd = dev_get_drvdata(&bridge->dev); + + ACPI_COMPANION_SET(&bridge->dev, sd->companion); + return 0; +} + +static struct pci_host_bridge_ops pci_host_ops = { + .pci_ops = &pci_root_ops, + .prepare = pci_host_bridge_prepare, +}; + struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root) { struct acpi_device *device = root->device; @@ -359,6 +372,7 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root) LIST_HEAD(crs_res); LIST_HEAD(resources); struct pci_bus *bus; + struct pci_host_bridge *host = NULL; struct pci_sysdata *sd; int node; @@ -425,14 +439,13 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root) if (!setup_mcfg_map(info, domain, (u8)root->secondary.start, (u8)root->secondary.end, root->mcfg_addr)) - bus = pci_create_root_bus(NULL, domain, busnum, - &pci_root_ops, sd, &resources); - - if (bus) { - pci_scan_child_bus(bus); - pci_set_host_bridge_release( - to_pci_host_bridge(bus->bridge), - release_pci_root_info, info); + host = pci_scan_host_bridge(NULL, domain, busnum, sd, + &resources, &pci_host_ops); + + if (host) { + bus = host->bus; + pci_set_host_bridge_release(host, + release_pci_root_info, info); } else { resource_list_free(&resources); teardown_mcfg_map(info); @@ -455,14 +468,6 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root) return bus; } -int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge) -{ - struct pci_sysdata *sd = bridge->bus->sysdata; - - ACPI_COMPANION_SET(&bridge->dev, sd->companion); - return 0; -} - int __init pci_acpi_init(void) { struct pci_dev *dev = NULL;