2 new class functions are pasid_[at|de]tach_hwpt(). They are used to
attach/detach pasid to/from hwpt. VFIO and VDPA can have different
implementions, so implementation will be in sub-class instead of
HostIOMMUDeviceIOMMUFD, e.g., in HostIOMMUDeviceIOMMUFDVFIO.

Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
---
 hw/vfio/iommufd.c    | 47 ++++++++++++++++++++++++++++++++++++++++++++
 hw/vfio/trace-events |  2 ++
 2 files changed, 49 insertions(+)

diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c
index 131612eb83..96735f1fc8 100644
--- a/hw/vfio/iommufd.c
+++ b/hw/vfio/iommufd.c
@@ -931,6 +931,51 @@ host_iommu_device_iommufd_vfio_detach_hwpt(HostIOMMUDeviceIOMMUFD *idev,
     return iommufd_cdev_detach_ioas_hwpt(vbasedev, errp);
 }
 
+static bool
+host_iommu_device_iommufd_vfio_pasid_attach_hwpt(HostIOMMUDeviceIOMMUFD *idev,
+                                                 uint32_t pasid,
+                                                 uint32_t hwpt_id,
+                                                 Error **errp)
+{
+    VFIODevice *vbasedev = HOST_IOMMU_DEVICE(idev)->agent;
+    struct vfio_device_attach_iommufd_pt attach = {
+        .argsz = sizeof(attach),
+        .flags = VFIO_DEVICE_ATTACH_PASID,
+        .pasid = pasid,
+        .pt_id = hwpt_id,
+    };
+
+    if (ioctl(vbasedev->fd, VFIO_DEVICE_ATTACH_IOMMUFD_PT, &attach)) {
+        error_setg_errno(errp, errno, "error attach %s pasid %d to id=%d",
+                         vbasedev->name, pasid, hwpt_id);
+        return false;
+    }
+
+    trace_hiod_iommufd_vfio_pasid_attach_hwpt(vbasedev->name, pasid, hwpt_id);
+    return true;
+}
+
+static bool
+host_iommu_device_iommufd_vfio_pasid_detach_hwpt(HostIOMMUDeviceIOMMUFD *idev,
+                                                 uint32_t pasid, Error **errp)
+{
+    VFIODevice *vbasedev = HOST_IOMMU_DEVICE(idev)->agent;
+    struct vfio_device_detach_iommufd_pt detach = {
+        .argsz = sizeof(detach),
+        .pasid = pasid,
+        .flags = VFIO_DEVICE_DETACH_PASID,
+    };
+
+    if (ioctl(vbasedev->fd, VFIO_DEVICE_DETACH_IOMMUFD_PT, &detach)) {
+        error_setg_errno(errp, errno, "detach %s pasid %d failed",
+                         vbasedev->name, pasid);
+        return false;
+    }
+
+    trace_hiod_iommufd_vfio_pasid_detach_hwpt(vbasedev->name, pasid);
+    return true;
+}
+
 static bool hiod_iommufd_vfio_realize(HostIOMMUDevice *hiod, void *opaque,
                                       Error **errp)
 {
@@ -993,6 +1038,8 @@ static void hiod_iommufd_vfio_class_init(ObjectClass *oc, const void *data)
 
     idevc->attach_hwpt = host_iommu_device_iommufd_vfio_attach_hwpt;
     idevc->detach_hwpt = host_iommu_device_iommufd_vfio_detach_hwpt;
+    idevc->pasid_attach_hwpt = host_iommu_device_iommufd_vfio_pasid_attach_hwpt;
+    idevc->pasid_detach_hwpt = host_iommu_device_iommufd_vfio_pasid_detach_hwpt;
 };
 
 static const TypeInfo types[] = {
diff --git a/hw/vfio/trace-events b/hw/vfio/trace-events
index 846e3625c5..2af6f46014 100644
--- a/hw/vfio/trace-events
+++ b/hw/vfio/trace-events
@@ -188,6 +188,8 @@ iommufd_cdev_fail_attach_existing_container(const char *msg) " %s"
 iommufd_cdev_alloc_ioas(int iommufd, int ioas_id) " [iommufd=%d] new IOMMUFD container with ioasid=%d"
 iommufd_cdev_device_info(char *name, int devfd, int num_irqs, int num_regions, int flags) " %s (%d) num_irqs=%d num_regions=%d flags=%d"
 iommufd_cdev_pci_hot_reset_dep_devices(int domain, int bus, int slot, int function, int dev_id) "\t%04x:%02x:%02x.%x devid %d"
+hiod_iommufd_vfio_pasid_attach_hwpt(const char *name, uint32_t paisd, uint32_t hwpt_id) " Successfully attached device %s pasid %d to id=%d"
+hiod_iommufd_vfio_pasid_detach_hwpt(const char *name, uint32_t paisd) " Successfully detached device %s pasid %d"
 
 # cpr-iommufd.c
 vfio_cpr_find_device(uint32_t ioas_id, int devid, uint32_t hwpt_id) "ioas_id %u, devid %d, hwpt_id %u"
-- 
2.47.3