1 files changed, 58 insertions, 0 deletions

diff --git a/backends/iommufd.c b/backends/iommufd.c
index b73f75cd0b..c2c47abf7e 100644
--- a/backends/iommufd.c
+++ b/backends/iommufd.c
@@ -311,6 +311,62 @@ bool iommufd_backend_get_device_info(IOMMUFDBackend *be, uint32_t devid,
     return true;
 }
 
+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)
+{
+    int ret, fd = be->fd;
+    uint32_t total_entries = *entry_num;
+    struct iommu_hwpt_invalidate cache = {
+        .size = sizeof(cache),
+        .hwpt_id = id,
+        .data_type = data_type,
+        .entry_len = entry_len,
+        .entry_num = total_entries,
+        .data_uptr = (uintptr_t)data,
+    };
+
+    ret = ioctl(fd, IOMMU_HWPT_INVALIDATE, &cache);
+    trace_iommufd_backend_invalidate_cache(fd, id, data_type, entry_len,
+                                           total_entries, cache.entry_num,
+                                           (uintptr_t)data, ret ? errno : 0);
+    *entry_num = cache.entry_num;
+
+    if (ret) {
+        error_setg_errno(errp, errno, "IOMMU_HWPT_INVALIDATE failed:"
+                         " total %d entries, processed %d entries",
+                         total_entries, cache.entry_num);
+    } else if (total_entries != cache.entry_num) {
+        error_setg(errp, "IOMMU_HWPT_INVALIDATE succeed but with unprocessed"
+                         " entries: total %d entries, processed %d entries."
+                         " Kernel BUG?!", total_entries, cache.entry_num);
+        return false;
+    }
+
+    return !ret;
+}
+
+bool host_iommu_device_iommufd_attach_hwpt(HostIOMMUDeviceIOMMUFD *idev,
+                                           uint32_t hwpt_id, Error **errp)
+{
+    HostIOMMUDeviceIOMMUFDClass *idevc =
+        HOST_IOMMU_DEVICE_IOMMUFD_GET_CLASS(idev);
+
+    g_assert(idevc->attach_hwpt);
+    return idevc->attach_hwpt(idev, hwpt_id, errp);
+}
+
+bool host_iommu_device_iommufd_detach_hwpt(HostIOMMUDeviceIOMMUFD *idev,
+                                           Error **errp)
+{
+    HostIOMMUDeviceIOMMUFDClass *idevc =
+        HOST_IOMMU_DEVICE_IOMMUFD_GET_CLASS(idev);
+
+    g_assert(idevc->detach_hwpt);
+    return idevc->detach_hwpt(idev, errp);
+}
+
 static int hiod_iommufd_get_cap(HostIOMMUDevice *hiod, int cap, Error **errp)
 {
     HostIOMMUDeviceCaps *caps = &hiod->caps;
@@ -349,6 +405,8 @@ static const TypeInfo types[] = {
     }, {
         .name = TYPE_HOST_IOMMU_DEVICE_IOMMUFD,
         .parent = TYPE_HOST_IOMMU_DEVICE,
+        .instance_size = sizeof(HostIOMMUDeviceIOMMUFD),
+        .class_size = sizeof(HostIOMMUDeviceIOMMUFDClass),
         .class_init = hiod_iommufd_class_init,
         .abstract = true,
     }