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path: root/drivers/iommu/iommufd/hw_pagetable.c
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Diffstat (limited to 'drivers/iommu/iommufd/hw_pagetable.c')
-rw-r--r--drivers/iommu/iommufd/hw_pagetable.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/iommu/iommufd/hw_pagetable.c b/drivers/iommu/iommufd/hw_pagetable.c
index 29612106a962..3f3f1fa1a0a9 100644
--- a/drivers/iommu/iommufd/hw_pagetable.c
+++ b/drivers/iommu/iommufd/hw_pagetable.c
@@ -373,3 +373,44 @@ int iommufd_hwpt_get_dirty_bitmap(struct iommufd_ucmd *ucmd)
iommufd_put_object(ucmd->ictx, &hwpt_paging->common.obj);
return rc;
}
+
+int iommufd_hwpt_invalidate(struct iommufd_ucmd *ucmd)
+{
+ struct iommu_hwpt_invalidate *cmd = ucmd->cmd;
+ struct iommu_user_data_array data_array = {
+ .type = cmd->data_type,
+ .uptr = u64_to_user_ptr(cmd->data_uptr),
+ .entry_len = cmd->entry_len,
+ .entry_num = cmd->entry_num,
+ };
+ struct iommufd_hw_pagetable *hwpt;
+ u32 done_num = 0;
+ int rc;
+
+ if (cmd->__reserved) {
+ rc = -EOPNOTSUPP;
+ goto out;
+ }
+
+ if (cmd->entry_num && (!cmd->data_uptr || !cmd->entry_len)) {
+ rc = -EINVAL;
+ goto out;
+ }
+
+ hwpt = iommufd_get_hwpt_nested(ucmd, cmd->hwpt_id);
+ if (IS_ERR(hwpt)) {
+ rc = PTR_ERR(hwpt);
+ goto out;
+ }
+
+ rc = hwpt->domain->ops->cache_invalidate_user(hwpt->domain,
+ &data_array);
+ done_num = data_array.entry_num;
+
+ iommufd_put_object(ucmd->ictx, &hwpt->obj);
+out:
+ cmd->entry_num = done_num;
+ if (iommufd_ucmd_respond(ucmd, sizeof(*cmd)))
+ return -EFAULT;
+ return rc;
+}