Merge tag 'pull-vfio-20250605' of https://github.com/legoater/qemu into staging

vfio queue:

* Fixed OpRegion detection in IGD
* Added prerequisite rework for IOMMU nesting support
* Added prerequisite rework for vfio-user
* Added prerequisite rework for VFIO live update
* Modified memory_get_xlat_addr() to return a MemoryRegion

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# gpg: Signature made Thu 05 Jun 2025 04:40:56 EDT
# gpg:                using RSA key A0F66548F04895EBFE6B0B6051A343C7CFFBECA1
# gpg: Good signature from "Cédric Le Goater <clg@redhat.com>" [full]
# gpg:                 aka "Cédric Le Goater <clg@kaod.org>" [full]
# Primary key fingerprint: A0F6 6548 F048 95EB FE6B  0B60 51A3 43C7 CFFB ECA1

* tag 'pull-vfio-20250605' of https://github.com/legoater/qemu:
  vfio: move vfio-cpr.h
  vfio: vfio_find_ram_discard_listener
  MAINTAINERS: Add reviewer for CPR
  vfio/iommufd: Save vendor specific device info
  vfio/iommufd: Implement [at|de]tach_hwpt handlers
  vfio/iommufd: Add properties and handlers to TYPE_HOST_IOMMU_DEVICE_IOMMUFD
  backends/iommufd: Add a helper to invalidate user-managed HWPT
  vfio/container: pass MemoryRegion to DMA operations
  vfio: return mr from vfio_get_xlat_addr
  vfio/igd: Fix incorrect error propagation in vfio_pci_igd_opregion_detect()
  vfio/iommufd: Add comment emphasizing no movement of hiod->realize() call
  vfio: refactor out IRQ signalling setup
  vfio: move config space read into vfio_pci_config_setup()
  vfio: move more cleanup into vfio_pci_put_device()
  vfio: add more VFIOIOMMUClass docs
  vfio/igd: OpRegion not found fix error typo

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 54 insertions, 0 deletions

diff --git a/include/system/iommufd.h b/include/system/iommufd.h
index cbab75bfbf..283861b924 100644
--- a/include/system/iommufd.h
+++ b/include/system/iommufd.h
@@ -61,6 +61,60 @@ bool iommufd_backend_get_dirty_bitmap(IOMMUFDBackend *be, uint32_t hwpt_id,
                                       uint64_t iova, ram_addr_t size,
                                       uint64_t page_size, uint64_t *data,
                                       Error **errp);
+bool iommufd_backend_invalidate_cache(IOMMUFDBackend *be, uint32_t id,
+                                      uint32_t data_type, uint32_t entry_len,
+                                      uint32_t *entry_num, void *data,
+                                      Error **errp);
 
 #define TYPE_HOST_IOMMU_DEVICE_IOMMUFD TYPE_HOST_IOMMU_DEVICE "-iommufd"
+OBJECT_DECLARE_TYPE(HostIOMMUDeviceIOMMUFD, HostIOMMUDeviceIOMMUFDClass,
+                    HOST_IOMMU_DEVICE_IOMMUFD)
+
+/* Overload of the host IOMMU device for the iommufd backend */
+struct HostIOMMUDeviceIOMMUFD {
+    HostIOMMUDevice parent_obj;
+
+    IOMMUFDBackend *iommufd;
+    uint32_t devid;
+    uint32_t hwpt_id;
+};
+
+struct HostIOMMUDeviceIOMMUFDClass {
+    HostIOMMUDeviceClass parent_class;
+
+    /**
+     * @attach_hwpt: attach host IOMMU device to IOMMUFD hardware page table.
+     * VFIO and VDPA device can have different implementation.
+     *
+     * Mandatory callback.
+     *
+     * @idev: host IOMMU device backed by IOMMUFD backend.
+     *
+     * @hwpt_id: ID of IOMMUFD hardware page table.
+     *
+     * @errp: pass an Error out when attachment fails.
+     *
+     * Returns: true on success, false on failure.
+     */
+    bool (*attach_hwpt)(HostIOMMUDeviceIOMMUFD *idev, uint32_t hwpt_id,
+                        Error **errp);
+    /**
+     * @detach_hwpt: detach host IOMMU device from IOMMUFD hardware page table.
+     * VFIO and VDPA device can have different implementation.
+     *
+     * Mandatory callback.
+     *
+     * @idev: host IOMMU device backed by IOMMUFD backend.
+     *
+     * @errp: pass an Error out when attachment fails.
+     *
+     * Returns: true on success, false on failure.
+     */
+    bool (*detach_hwpt)(HostIOMMUDeviceIOMMUFD *idev, Error **errp);
+};
+
+bool host_iommu_device_iommufd_attach_hwpt(HostIOMMUDeviceIOMMUFD *idev,
+                                           uint32_t hwpt_id, Error **errp);
+bool host_iommu_device_iommufd_detach_hwpt(HostIOMMUDeviceIOMMUFD *idev,
+                                           Error **errp);
 #endif