From patchwork Tue Apr 21 11:34:34 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yijing Wang X-Patchwork-Id: 6247341 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 DC0DF9F32B for ; Tue, 21 Apr 2015 11:45:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 19F4F202B4 for ; Tue, 21 Apr 2015 11:45:53 +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 42DFF202AE for ; Tue, 21 Apr 2015 11:45:52 +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 1YkWZd-0000sL-SQ; Tue, 21 Apr 2015 11:42:41 +0000 Received: from szxga02-in.huawei.com ([119.145.14.65]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YkWX5-0006mQ-1Q for linux-arm-kernel@lists.infradead.org; Tue, 21 Apr 2015 11:40:04 +0000 Received: from 172.24.2.119 (EHLO szxeml431-hub.china.huawei.com) ([172.24.2.119]) by szxrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id CKC39694; Tue, 21 Apr 2015 19:38:05 +0800 (CST) Received: from localhost.localdomain (10.175.100.166) by szxeml431-hub.china.huawei.com (10.82.67.208) with Microsoft SMTP Server id 14.3.158.1; Tue, 21 Apr 2015 19:37:58 +0800 From: Yijing Wang To: Bjorn Helgaas Subject: [PATCH v10 15/29] PCI: Introduce new scan function pci_scan_host_bridge() Date: Tue, 21 Apr 2015 19:34:34 +0800 Message-ID: <1429616088-10249-16-git-send-email-wangyijing@huawei.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1429616088-10249-1-git-send-email-wangyijing@huawei.com> References: <1429616088-10249-1-git-send-email-wangyijing@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.100.166] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150421_044003_684671_3685D900 X-CRM114-Status: GOOD ( 10.01 ) X-Spam-Score: -2.3 (--) Cc: linux-ia64@vger.kernel.org, linux-pci@vger.kernel.org, Yijing Wang , Guan Xuetao , Russell King , x86@kernel.org, Geert Uytterhoeven , Benjamin Herrenschmidt , Arnd Bergmann , Marc Zyngier , Rusty Russell , linux-m68k@lists.linux-m68k.org, Thomas Gleixner , Yinghai Lu , linux-arm-kernel@lists.infradead.org, dja@axtens.net, Liviu Dudau , Tony Luck , linux-kernel@vger.kernel.org, Jiang Liu , linux-alpha@vger.kernel.org, "David S. Miller" 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 Introduce new scan function pci_scan_host_bridge() to support host bridge drivers that need to provide platform own pci_host_bridge_ops. Signed-off-by: Yijing Wang --- drivers/pci/probe.c | 23 +++++++++++++++++++++++ include/linux/pci.h | 3 +++ 2 files changed, 26 insertions(+), 0 deletions(-) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 83cf7c6..708bcf1 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -2064,6 +2064,29 @@ void pci_bus_release_busn_res(struct pci_bus *b) res, ret ? "can not be" : "is"); } +struct pci_host_bridge *pci_scan_host_bridge( + struct device *parent, int domain, + void *sysdata, struct list_head *resources, + struct pci_host_bridge_ops *ops) +{ + struct pci_host_bridge *host; + + host = pci_create_host_bridge(parent, domain, sysdata, + resources, ops); + if (!host) + return NULL; + + host->bus = __pci_create_root_bus(host, ops->pci_ops); + if (!host->bus) { + pci_free_host_bridge(host); + return NULL; + } + + pci_scan_child_bus(host->bus); + return host; +} +EXPORT_SYMBOL(pci_scan_host_bridge); + struct pci_bus *pci_scan_root_bus(struct device *parent, int domain, int bus, struct pci_ops *ops, void *sysdata, struct list_head *resources) diff --git a/include/linux/pci.h b/include/linux/pci.h index 91fde6a..13edbf1 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -796,6 +796,9 @@ void pci_bus_release_busn_res(struct pci_bus *b); struct pci_bus *pci_scan_root_bus(struct device *parent, int domain, int bus, struct pci_ops *ops, void *sysdata, struct list_head *resources); +struct pci_host_bridge *pci_scan_host_bridge(struct device *parent, + int domain, void *sysdata, struct list_head *resources, + struct pci_host_bridge_ops *ops); struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr); void pcie_update_link_speed(struct pci_bus *bus, u16 link_status);