v4.19.13 snapshot.
diff --git a/arch/x86/include/asm/device.h b/arch/x86/include/asm/device.h
new file mode 100644
index 0000000..a8f6c80
--- /dev/null
+++ b/arch/x86/include/asm/device.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_X86_DEVICE_H
+#define _ASM_X86_DEVICE_H
+
+struct dev_archdata {
+#if defined(CONFIG_INTEL_IOMMU) || defined(CONFIG_AMD_IOMMU)
+ void *iommu; /* hook for IOMMU specific extension */
+#endif
+#ifdef CONFIG_STA2X11
+ bool is_sta2x11;
+#endif
+};
+
+#if defined(CONFIG_X86_DEV_DMA_OPS) && defined(CONFIG_PCI_DOMAINS)
+struct dma_domain {
+ struct list_head node;
+ const struct dma_map_ops *dma_ops;
+ int domain_nr;
+};
+void add_dma_domain(struct dma_domain *domain);
+void del_dma_domain(struct dma_domain *domain);
+#endif
+
+struct pdev_archdata {
+};
+
+#endif /* _ASM_X86_DEVICE_H */