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Tue, 2 Jul 2024 05:52:38 +0000 From: CLEMENT MATHIEU--DRIF To: "qemu-devel@nongnu.org" CC: "jasowang@redhat.com" , "zhenzhong.duan@intel.com" , "kevin.tian@intel.com" , "yi.l.liu@intel.com" , "joao.m.martins@oracle.com" , "peterx@redhat.com" , "mst@redhat.com" , CLEMENT MATHIEU--DRIF Subject: [PATCH ats_vtd v5 10/22] pci: add IOMMU operations to get address spaces and memory regions with PASID Thread-Topic: [PATCH ats_vtd v5 10/22] pci: add IOMMU operations to get address spaces and memory regions with PASID Thread-Index: AQHazEQLkXBRqmEjB0WGDgHUwGi0UQ== Date: Tue, 2 Jul 2024 05:52:38 +0000 Message-ID: <20240702055221.1337035-11-clement.mathieu--drif@eviden.com> References: <20240702055221.1337035-1-clement.mathieu--drif@eviden.com> In-Reply-To: <20240702055221.1337035-1-clement.mathieu--drif@eviden.com> Accept-Language: en-GB, fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=eviden.com; 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envelope-from=clement.mathieu--drif@eviden.com; helo=smarthost4.eviden.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-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 From: Clément Mathieu--Drif Signed-off-by: Clément Mathieu--Drif --- hw/pci/pci.c | 19 +++++++++++++++++++ include/hw/pci/pci.h | 34 ++++++++++++++++++++++++++++++++++ 2 files changed, 53 insertions(+) diff --git a/hw/pci/pci.c b/hw/pci/pci.c index 51feede3cf..3fe47d4002 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -2747,6 +2747,25 @@ AddressSpace *pci_device_iommu_address_space(PCIDevice *dev) return &address_space_memory; } +AddressSpace *pci_device_iommu_address_space_pasid(PCIDevice *dev, + uint32_t pasid) +{ + PCIBus *bus; + PCIBus *iommu_bus; + int devfn; + + if (!dev->is_master || !pcie_pasid_enabled(dev) || pasid == PCI_NO_PASID) { + return NULL; + } + + pci_device_get_iommu_bus_devfn(dev, &bus, &iommu_bus, &devfn); + if (iommu_bus && iommu_bus->iommu_ops->get_address_space_pasid) { + return iommu_bus->iommu_ops->get_address_space_pasid(bus, + iommu_bus->iommu_opaque, devfn, pasid); + } + return NULL; +} + bool pci_device_set_iommu_device(PCIDevice *dev, HostIOMMUDevice *hiod, Error **errp) { diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h index eb26cac810..ad7bd2ade5 100644 --- a/include/hw/pci/pci.h +++ b/include/hw/pci/pci.h @@ -385,6 +385,38 @@ typedef struct PCIIOMMUOps { * @devfn: device and function number */ AddressSpace * (*get_address_space)(PCIBus *bus, void *opaque, int devfn); + /** + * @get_address_space_pasid: same as get_address_space but returns an + * address space with the requested PASID + * + * This callback is required for PASID-based operations + * + * @bus: the #PCIBus being accessed. + * + * @opaque: the data passed to pci_setup_iommu(). + * + * @devfn: device and function number + * + * @pasid: the pasid associated with the requested memory region + */ + AddressSpace * (*get_address_space_pasid)(PCIBus *bus, void *opaque, + int devfn, uint32_t pasid); + /** + * @get_memory_region_pasid: get the iommu memory region for a given + * device and pasid + * + * @bus: the #PCIBus being accessed. + * + * @opaque: the data passed to pci_setup_iommu(). + * + * @devfn: device and function number + * + * @pasid: the pasid associated with the requested memory region + */ + IOMMUMemoryRegion * (*get_memory_region_pasid)(PCIBus *bus, + void *opaque, + int devfn, + uint32_t pasid); /** * @set_iommu_device: attach a HostIOMMUDevice to a vIOMMU * @@ -420,6 +452,8 @@ typedef struct PCIIOMMUOps { } PCIIOMMUOps; AddressSpace *pci_device_iommu_address_space(PCIDevice *dev); +AddressSpace *pci_device_iommu_address_space_pasid(PCIDevice *dev, + uint32_t pasid); bool pci_device_set_iommu_device(PCIDevice *dev, HostIOMMUDevice *hiod, Error **errp); void pci_device_unset_iommu_device(PCIDevice *dev);