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a="390032478" X-IronPort-AV: E=Sophos;i="6.04,196,1695711600"; d="scan'208";a="390032478" X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10953"; a="1030599499" X-IronPort-AV: E=Sophos;i="6.04,196,1695711600"; d="scan'208";a="1030599499" From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, eric.auger@redhat.com, peterx@redhat.com, jasowang@redhat.com, mst@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, joao.m.martins@oracle.com, kevin.tian@intel.com, yi.l.liu@intel.com, yi.y.sun@intel.com, chao.p.peng@intel.com, Yi Sun , Zhenzhong Duan , Marcel Apfelbaum , Paolo Bonzini , Richard Henderson , Eduardo Habkost Subject: [PATCH rfcv1 3/6] intel_iommu: add set/unset_iommu_device callback Date: Mon, 15 Jan 2024 18:13:10 +0800 Message-Id: <20240115101313.131139-4-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240115101313.131139-1-zhenzhong.duan@intel.com> References: <20240115101313.131139-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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; Received-SPF: pass client-ip=134.134.136.20; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -71 X-Spam_score: -7.2 X-Spam_bar: ------- X-Spam_report: (-7.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-2.758, 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_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1705313877220100001 Content-Type: text/plain; charset="utf-8" From: Yi Liu This adds set/unset_iommu_device() implementation in Intel vIOMMU. In set call, IOMMUFDDevice is recorded in hash table indexed by PCI BDF. Signed-off-by: Yi Liu Signed-off-by: Yi Sun Signed-off-by: Zhenzhong Duan --- include/hw/i386/intel_iommu.h | 10 +++++ hw/i386/intel_iommu.c | 79 +++++++++++++++++++++++++++++++++++ 2 files changed, 89 insertions(+) diff --git a/include/hw/i386/intel_iommu.h b/include/hw/i386/intel_iommu.h index 7fa0a695c8..c65fdde56f 100644 --- a/include/hw/i386/intel_iommu.h +++ b/include/hw/i386/intel_iommu.h @@ -62,6 +62,7 @@ typedef union VTD_IR_TableEntry VTD_IR_TableEntry; typedef union VTD_IR_MSIAddress VTD_IR_MSIAddress; typedef struct VTDPASIDDirEntry VTDPASIDDirEntry; typedef struct VTDPASIDEntry VTDPASIDEntry; +typedef struct VTDIOMMUFDDevice VTDIOMMUFDDevice; =20 /* Context-Entry */ struct VTDContextEntry { @@ -148,6 +149,13 @@ struct VTDAddressSpace { IOVATree *iova_tree; }; =20 +struct VTDIOMMUFDDevice { + PCIBus *bus; + uint8_t devfn; + IOMMUFDDevice *idev; + IntelIOMMUState *iommu_state; +}; + struct VTDIOTLBEntry { uint64_t gfn; uint16_t domain_id; @@ -292,6 +300,8 @@ struct IntelIOMMUState { /* list of registered notifiers */ QLIST_HEAD(, VTDAddressSpace) vtd_as_with_notifiers; =20 + GHashTable *vtd_iommufd_dev; /* VTDIOMMUFDDevice */ + /* interrupt remapping */ bool intr_enabled; /* Whether guest enabled IR */ dma_addr_t intr_root; /* Interrupt remapping table pointer */ diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index ed5677c0ae..95faf697eb 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -237,6 +237,13 @@ static gboolean vtd_as_equal(gconstpointer v1, gconstp= ointer v2) (key1->pasid =3D=3D key2->pasid); } =20 +static gboolean vtd_as_idev_equal(gconstpointer v1, gconstpointer v2) +{ + const struct vtd_as_key *key1 =3D v1; + const struct vtd_as_key *key2 =3D v2; + + return (key1->bus =3D=3D key2->bus) && (key1->devfn =3D=3D key2->devfn= ); +} /* * Note that we use pointer to PCIBus as the key, so hashing/shifting * based on the pointer value is intended. Note that we deal with @@ -3812,6 +3819,74 @@ VTDAddressSpace *vtd_find_add_as(IntelIOMMUState *s,= PCIBus *bus, return vtd_dev_as; } =20 +static int vtd_dev_set_iommu_device(PCIBus *bus, void *opaque, int32_t dev= fn, + IOMMUFDDevice *idev, Error **errp) +{ + IntelIOMMUState *s =3D opaque; + VTDIOMMUFDDevice *vtd_idev; + struct vtd_as_key key =3D { + .bus =3D bus, + .devfn =3D devfn, + }; + struct vtd_as_key *new_key; + + assert(0 <=3D devfn && devfn < PCI_DEVFN_MAX); + + /* None IOMMUFD case */ + if (!idev) { + return 0; + } + + vtd_iommu_lock(s); + + vtd_idev =3D g_hash_table_lookup(s->vtd_iommufd_dev, &key); + + if (vtd_idev) { + error_setg(errp, "IOMMUFD device already exist"); + return -1; + } + + new_key =3D g_malloc(sizeof(*new_key)); + new_key->bus =3D bus; + new_key->devfn =3D devfn; + + vtd_idev =3D g_malloc0(sizeof(VTDIOMMUFDDevice)); + vtd_idev->bus =3D bus; + vtd_idev->devfn =3D (uint8_t)devfn; + vtd_idev->iommu_state =3D s; + vtd_idev->idev =3D idev; + + g_hash_table_insert(s->vtd_iommufd_dev, new_key, vtd_idev); + + vtd_iommu_unlock(s); + + return 0; +} + +static void vtd_dev_unset_iommu_device(PCIBus *bus, void *opaque, int32_t = devfn) +{ + IntelIOMMUState *s =3D opaque; + VTDIOMMUFDDevice *vtd_idev; + struct vtd_as_key key =3D { + .bus =3D bus, + .devfn =3D devfn, + }; + + assert(0 <=3D devfn && devfn < PCI_DEVFN_MAX); + + vtd_iommu_lock(s); + + vtd_idev =3D g_hash_table_lookup(s->vtd_iommufd_dev, &key); + if (!vtd_idev) { + vtd_iommu_unlock(s); + return; + } + + g_hash_table_remove(s->vtd_iommufd_dev, &key); + + vtd_iommu_unlock(s); +} + /* Unmap the whole range in the notifier's scope. */ static void vtd_address_space_unmap(VTDAddressSpace *as, IOMMUNotifier *n) { @@ -4107,6 +4182,8 @@ static AddressSpace *vtd_host_dma_iommu(PCIBus *bus, = void *opaque, int devfn) =20 static PCIIOMMUOps vtd_iommu_ops =3D { .get_address_space =3D vtd_host_dma_iommu, + .set_iommu_device =3D vtd_dev_set_iommu_device, + .unset_iommu_device =3D vtd_dev_unset_iommu_device, }; =20 static bool vtd_decide_config(IntelIOMMUState *s, Error **errp) @@ -4230,6 +4307,8 @@ static void vtd_realize(DeviceState *dev, Error **err= p) g_free, g_free); s->vtd_address_spaces =3D g_hash_table_new_full(vtd_as_hash, vtd_as_eq= ual, g_free, g_free); + s->vtd_iommufd_dev =3D g_hash_table_new_full(vtd_as_hash, vtd_as_idev_= equal, + g_free, g_free); vtd_init(s); pci_setup_iommu(bus, &vtd_iommu_ops, dev); /* Pseudo address space under root PCI bus. */ --=20 2.34.1