From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 091B0CE8D6B for ; Mon, 17 Nov 2025 09:39:35 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vKvhX-0004OG-HG; Mon, 17 Nov 2025 04:39:11 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vKvhE-0004JH-2G for qemu-devel@nongnu.org; Mon, 17 Nov 2025 04:38:59 -0500 Received: from mgamail.intel.com ([192.198.163.9]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vKvhC-0006Fs-Dx for qemu-devel@nongnu.org; Mon, 17 Nov 2025 04:38:51 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1763372330; x=1794908330; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=XDnUEaBT3mLSFTfR7mqqUXIcK4G2KiahJspPNGq6d0o=; b=khlf2E8Dgd56syK4KY3G0LRDn0YPZ1CU6UWNrzRic5dGKp8JlyEw/f9c VSomvGbrUPfrd74DDrNNyON8rTaunIjkPePAZ5IwmSJ9JvS6AQecJvbPh lGRPVOlBusOylRoj7GXDoGMzLVljDlKT2wczzT2tcFC0OK/YpqMiZKLXN iN/VdxxyYHIYLCnemJ9Jegg/lPAJTaG37vdyzseMKWG8x4EDC7YtU//zE kJgGiACz3a9Tr4W6gGQv8xh/LEpbQ9SO/ajKGuwzS6qfK81RX8U9v7ZG5 G3L/JdNOw3hK4gSnNDdDl6LfHBj6VW6HLw2YGadESa+A57irKNwndbepm Q==; X-CSE-ConnectionGUID: rZTsYonBQSGskT6DsZsvlg== X-CSE-MsgGUID: PWUnc3xKShS+el5/MRcKbQ== X-IronPort-AV: E=McAfee;i="6800,10657,11615"; a="76045899" X-IronPort-AV: E=Sophos;i="6.19,311,1754982000"; d="scan'208";a="76045899" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Nov 2025 01:38:50 -0800 X-CSE-ConnectionGUID: SuTeiMM3Q/Ois5BhmtoYNg== X-CSE-MsgGUID: ke1+9973R+6a6y1+wgvTwA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,311,1754982000"; d="scan'208";a="190070872" Received: from unknown (HELO gnr-sp-2s-612.sh.intel.com) ([10.112.230.229]) by fmviesa007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Nov 2025 01:38:46 -0800 From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex@shazbot.org, clg@redhat.com, eric.auger@redhat.com, mst@redhat.com, jasowang@redhat.com, peterx@redhat.com, ddutile@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, skolothumtho@nvidia.com, joao.m.martins@oracle.com, clement.mathieu--drif@eviden.com, kevin.tian@intel.com, yi.l.liu@intel.com, chao.p.peng@intel.com, Zhenzhong Duan Subject: [PATCH v8 04/23] hw/pci: Export pci_device_get_iommu_bus_devfn() and return bool Date: Mon, 17 Nov 2025 04:37:07 -0500 Message-ID: <20251117093729.1121324-5-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20251117093729.1121324-1-zhenzhong.duan@intel.com> References: <20251117093729.1121324-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=192.198.163.9; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Returns true if PCI device is aliased or false otherwise. This will be used in following patch to determine if a PCI device is under a PCI bridge. Signed-off-by: Zhenzhong Duan Reviewed-by: Eric Auger Reviewed-by: Nicolin Chen Reviewed-by: Yi Liu --- include/hw/pci/pci.h | 2 ++ hw/pci/pci.c | 12 ++++++++---- 2 files changed, 10 insertions(+), 4 deletions(-) diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h index 6bccb25ac2..bde9dca8e2 100644 --- a/include/hw/pci/pci.h +++ b/include/hw/pci/pci.h @@ -637,6 +637,8 @@ typedef struct PCIIOMMUOps { bool is_write); } PCIIOMMUOps; +bool pci_device_get_iommu_bus_devfn(PCIDevice *dev, PCIBus **piommu_bus, + PCIBus **aliased_bus, int *aliased_devfn); AddressSpace *pci_device_iommu_address_space(PCIDevice *dev); bool pci_device_set_iommu_device(PCIDevice *dev, HostIOMMUDevice *hiod, Error **errp); diff --git a/hw/pci/pci.c b/hw/pci/pci.c index b1eba348e0..3eb57b96ea 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -2869,20 +2869,21 @@ static void pci_device_class_base_init(ObjectClass *klass, const void *data) * For call sites which don't need aliased BDF, passing NULL to * aliased_[bus|devfn] is allowed. * + * Returns true if PCI device RID is aliased or false otherwise. + * * @piommu_bus: return root #PCIBus backed by an IOMMU for the PCI device. * * @aliased_bus: return aliased #PCIBus of the PCI device, optional. * * @aliased_devfn: return aliased devfn of the PCI device, optional. */ -static void pci_device_get_iommu_bus_devfn(PCIDevice *dev, - PCIBus **piommu_bus, - PCIBus **aliased_bus, - int *aliased_devfn) +bool pci_device_get_iommu_bus_devfn(PCIDevice *dev, PCIBus **piommu_bus, + PCIBus **aliased_bus, int *aliased_devfn) { PCIBus *bus = pci_get_bus(dev); PCIBus *iommu_bus = bus; int devfn = dev->devfn; + bool aliased = false; while (iommu_bus && !iommu_bus->iommu_ops && iommu_bus->parent_dev) { PCIBus *parent_bus = pci_get_bus(iommu_bus->parent_dev); @@ -2919,6 +2920,7 @@ static void pci_device_get_iommu_bus_devfn(PCIDevice *dev, devfn = parent->devfn; bus = parent_bus; } + aliased = true; } /* @@ -2953,6 +2955,8 @@ static void pci_device_get_iommu_bus_devfn(PCIDevice *dev, if (aliased_devfn) { *aliased_devfn = devfn; } + + return aliased; } AddressSpace *pci_device_iommu_address_space(PCIDevice *dev) -- 2.47.1