From nobody Tue Feb 10 06:51:30 2026 Delivered-To: importer2@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer2=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=huawei.com ARC-Seal: i=1; a=rsa-sha256; t=1621914731; cv=none; d=zohomail.com; s=zohoarc; b=gnwSs7EMUpA3IhcJufrG6/dP/7eCYB51+KMJD11NTDLgu9ug+KeXRNZuS0mN8/1b/g0Aw5DTX3o7j2drWa/a33Jzo1BEan73BdKd1bo/AnEHZAWnwncj5UA4WF2hhOm8gA8OVgtoKPzzXZeHZqZz3PwRr9OmIBOOd0QOGdT+IC8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1621914731; h=Content-Type:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=x3ztTNwnEVDR1zX0ncgI5HmZ/rS46TaKV507kJXXJHo=; b=e+AnVuzfv46YTILM4nmHWyXS1TCv8SYSgwObyELcydS6Ij/Xy8+AKoVLxbgYUq5u/ZcuOxxFsF3aPwUzf0sg31vX+FOfwUmzLbpk0LecHBzQYYIdVxHflgthHAnvgjl5nWz1kwIDu612Q50XpuR031G+7y/5AKj3Oqe01LmhUBw= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer2=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1621914731169776.5196423836005; Mon, 24 May 2021 20:52:11 -0700 (PDT) Received: from localhost ([::1]:45128 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1llO70-0002Kx-6R for importer2@patchew.org; Mon, 24 May 2021 23:52:10 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:57642) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1llO5L-0006Of-O0; Mon, 24 May 2021 23:50:27 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:3433) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1llO5H-0001lO-Ht; Mon, 24 May 2021 23:50:27 -0400 Received: from dggems705-chm.china.huawei.com (unknown [172.30.72.60]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4Fq0PV6RKqzP0HX; Tue, 25 May 2021 11:46:38 +0800 (CST) Received: from dggpemm500009.china.huawei.com (7.185.36.225) by dggems705-chm.china.huawei.com (10.3.19.182) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Tue, 25 May 2021 11:50:14 +0800 Received: from huawei.com (10.174.185.226) by dggpemm500009.china.huawei.com (7.185.36.225) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Tue, 25 May 2021 11:50:14 +0800 From: Wang Xingang To: , , , , , , , , , , Subject: [PATCH v4 5/8] hw/pci: Add pci_bus_range to get bus number range Date: Tue, 25 May 2021 03:50:02 +0000 Message-ID: <1621914605-14724-6-git-send-email-wangxingang5@huawei.com> X-Mailer: git-send-email 2.6.4.windows.1 In-Reply-To: <1621914605-14724-1-git-send-email-wangxingang5@huawei.com> References: <1621914605-14724-1-git-send-email-wangxingang5@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.174.185.226] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To dggpemm500009.china.huawei.com (7.185.36.225) X-CFilter-Loop: Reflected Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=45.249.212.191; envelope-from=wangxingang5@huawei.com; helo=szxga05-in.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: xieyingtai@huawei.com, wangxingang5@huawei.com Errors-To: qemu-devel-bounces+importer2=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Xingang Wang This helps to get the bus number range of a pci bridge hierarchy. Signed-off-by: Xingang Wang Reviewed-by: Eric Auger --- hw/pci/pci.c | 15 +++++++++++++++ include/hw/pci/pci.h | 1 + 2 files changed, 16 insertions(+) diff --git a/hw/pci/pci.c b/hw/pci/pci.c index 27d588e268..7f18ea5ef5 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -537,6 +537,21 @@ int pci_bus_num(PCIBus *s) return PCI_BUS_GET_CLASS(s)->bus_num(s); } =20 +void pci_bus_range(PCIBus *bus, int *min_bus, int *max_bus) +{ + int i; + *min_bus =3D *max_bus =3D pci_bus_num(bus); + + for (i =3D 0; i < ARRAY_SIZE(bus->devices); ++i) { + PCIDevice *dev =3D bus->devices[i]; + + if (dev && PCI_DEVICE_GET_CLASS(dev)->is_bridge) { + *min_bus =3D MIN(*min_bus, dev->config[PCI_SECONDARY_BUS]); + *max_bus =3D MAX(*max_bus, dev->config[PCI_SUBORDINATE_BUS]); + } + } +} + int pci_bus_numa_node(PCIBus *bus) { return PCI_BUS_GET_CLASS(bus)->numa_node(bus); diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h index f4d51b672b..d0f4266e37 100644 --- a/include/hw/pci/pci.h +++ b/include/hw/pci/pci.h @@ -450,6 +450,7 @@ static inline PCIBus *pci_get_bus(const PCIDevice *dev) return PCI_BUS(qdev_get_parent_bus(DEVICE(dev))); } int pci_bus_num(PCIBus *s); +void pci_bus_range(PCIBus *bus, int *min_bus, int *max_bus); static inline int pci_dev_bus_num(const PCIDevice *dev) { return pci_bus_num(pci_get_bus(dev)); --=20 2.19.1