From nobody Mon Feb 9 09:16:29 2026 Delivered-To: importer@patchew.org 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+importer=patchew.org@nongnu.org; helo=lists.gnu.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+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1584880326; cv=none; d=zohomail.com; s=zohoarc; b=GH47jAQ/IBYxkFajf49OiCIwOh9eIzcwUSxNkwHFn5Z/bYN0DTSsqUZaqRkc4Kc+KO5dBzSokJXDXGdyA3QbHbNCoiEh0wVgjylBfOM8trsceSsmoDOvS6TpmO7T5Xibo4RNC8ld01/B8L2bs1wCPPvjsnHC43Y5a14apMOpLZ0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1584880326; h=Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:References:Sender:Subject:To; bh=Nkpi5EAQ54UiWYEqbgWX1XEzZ2QhWiP2U0rsy9XP/Ec=; b=kPIRF+P7vX/ncDPyg3ZlwV5iT/UH3lObplZGp0cMGi9f2Pju19brXlv+qKvyW3tgceAcOA1hG1/We0A5+fgq0W5z9zDQyHXg4ew7Cr7LvxheL4Mz+3ifJWFpIZ7WTJIjANEsuBX9YCqCNq5Q/vsoiXYz+2OwH5d+1Kv6LhFBVaA= 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+importer=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 1584880326511145.29978963357007; Sun, 22 Mar 2020 05:32:06 -0700 (PDT) Received: from localhost ([::1]:45918 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jFzls-0002Tc-HP for importer@patchew.org; Sun, 22 Mar 2020 08:32:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:47825) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jFzkf-0000n9-U7 for qemu-devel@nongnu.org; Sun, 22 Mar 2020 08:30:51 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jFzkd-0003rH-G8 for qemu-devel@nongnu.org; Sun, 22 Mar 2020 08:30:49 -0400 Received: from mga02.intel.com ([134.134.136.20]:41735) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jFzkd-0003ol-5G for qemu-devel@nongnu.org; Sun, 22 Mar 2020 08:30:47 -0400 Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Mar 2020 05:30:38 -0700 Received: from jacob-builder.jf.intel.com ([10.7.199.155]) by orsmga008.jf.intel.com with ESMTP; 22 Mar 2020 05:30:37 -0700 IronPort-SDR: qAvM+jhu7PkW4E/J6GnRlx01sLsDOXGLRZtV4BclMKTkcWh2SioQ1XYqCUCciNhee28foOpFXp MINCvUAL+rEw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False IronPort-SDR: H29lmoJWSzJddgAHQ9mMrPiWN94pHNnpkZ2KKd6kAyKq80d5LvOvyCXTspSEDo+FvnJWyu46Ol 1eXZYJbm0lpg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,292,1580803200"; d="scan'208";a="239664367" From: Liu Yi L To: qemu-devel@nongnu.org, alex.williamson@redhat.com, peterx@redhat.com Subject: [PATCH v1 06/22] hw/pci: introduce pci_device_set/unset_iommu_context() Date: Sun, 22 Mar 2020 05:36:03 -0700 Message-Id: <1584880579-12178-7-git-send-email-yi.l.liu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1584880579-12178-1-git-send-email-yi.l.liu@intel.com> References: <1584880579-12178-1-git-send-email-yi.l.liu@intel.com> X-detected-operating-system: by eggs.gnu.org: FreeBSD 9.x [fuzzy] X-Received-From: 134.134.136.20 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: jean-philippe@linaro.org, kevin.tian@intel.com, yi.l.liu@intel.com, Yi Sun , kvm@vger.kernel.org, mst@redhat.com, jun.j.tian@intel.com, eric.auger@redhat.com, yi.y.sun@intel.com, Jacob Pan , pbonzini@redhat.com, hao.wu@intel.com, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" This patch adds pci_device_set/unset_iommu_context() to set/unset host_iommu_context for a given device. New callback is added in PCIIOMMUOps. As such, vIOMMU could make use of host IOMMU capability. e.g setup nested translation. Cc: Kevin Tian Cc: Jacob Pan Cc: Peter Xu Cc: Eric Auger Cc: Yi Sun Cc: David Gibson Cc: Michael S. Tsirkin Signed-off-by: Liu Yi L Reviewed-by: Peter Xu --- hw/pci/pci.c | 49 ++++++++++++++++++++++++++++++++++++++++++++----- include/hw/pci/pci.h | 10 ++++++++++ 2 files changed, 54 insertions(+), 5 deletions(-) diff --git a/hw/pci/pci.c b/hw/pci/pci.c index aa9025c..8642ea8 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -2638,7 +2638,8 @@ static void pci_device_class_base_init(ObjectClass *k= lass, void *data) } } =20 -AddressSpace *pci_device_iommu_address_space(PCIDevice *dev) +static void pci_device_get_iommu_bus_devfn(PCIDevice *dev, + PCIBus **pbus, uint8_t *pdevfn) { PCIBus *bus =3D pci_get_bus(dev); PCIBus *iommu_bus =3D bus; @@ -2683,14 +2684,52 @@ AddressSpace *pci_device_iommu_address_space(PCIDev= ice *dev) =20 iommu_bus =3D parent_bus; } - if (iommu_bus && iommu_bus->iommu_ops && - iommu_bus->iommu_ops->get_address_space) { - return iommu_bus->iommu_ops->get_address_space(bus, - iommu_bus->iommu_opaque, devfn); + *pbus =3D iommu_bus; + *pdevfn =3D devfn; +} + +AddressSpace *pci_device_iommu_address_space(PCIDevice *dev) +{ + PCIBus *bus; + uint8_t devfn; + + pci_device_get_iommu_bus_devfn(dev, &bus, &devfn); + if (bus && bus->iommu_ops && + bus->iommu_ops->get_address_space) { + return bus->iommu_ops->get_address_space(bus, + bus->iommu_opaque, devfn); } return &address_space_memory; } =20 +int pci_device_set_iommu_context(PCIDevice *dev, + HostIOMMUContext *host_icx) +{ + PCIBus *bus; + uint8_t devfn; + + pci_device_get_iommu_bus_devfn(dev, &bus, &devfn); + if (bus && bus->iommu_ops && + bus->iommu_ops->set_iommu_context) { + return bus->iommu_ops->set_iommu_context(bus, + bus->iommu_opaque, devfn, host_icx); + } + return -ENOENT; +} + +void pci_device_unset_iommu_context(PCIDevice *dev) +{ + PCIBus *bus; + uint8_t devfn; + + pci_device_get_iommu_bus_devfn(dev, &bus, &devfn); + if (bus && bus->iommu_ops && + bus->iommu_ops->unset_iommu_context) { + bus->iommu_ops->unset_iommu_context(bus, + bus->iommu_opaque, devfn); + } +} + void pci_setup_iommu(PCIBus *bus, const PCIIOMMUOps *ops, void *opaque) { bus->iommu_ops =3D ops; diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h index ffe192d..6fca2a0 100644 --- a/include/hw/pci/pci.h +++ b/include/hw/pci/pci.h @@ -9,6 +9,8 @@ =20 #include "hw/pci/pcie.h" =20 +#include "hw/iommu/host_iommu_context.h" + extern bool pci_available; =20 /* PCI bus */ @@ -489,9 +491,17 @@ typedef struct PCIIOMMUOps PCIIOMMUOps; struct PCIIOMMUOps { AddressSpace * (*get_address_space)(PCIBus *bus, void *opaque, int32_t devfn); + int (*set_iommu_context)(PCIBus *bus, void *opaque, + int32_t devfn, + HostIOMMUContext *host_icx); + void (*unset_iommu_context)(PCIBus *bus, void *opaque, + int32_t devfn); }; =20 AddressSpace *pci_device_iommu_address_space(PCIDevice *dev); +int pci_device_set_iommu_context(PCIDevice *dev, + HostIOMMUContext *host_icx); +void pci_device_unset_iommu_context(PCIDevice *dev); void pci_setup_iommu(PCIBus *bus, const PCIIOMMUOps *iommu_ops, void *opaq= ue); =20 static inline void --=20 2.7.4