v4.19.13 snapshot.
diff --git a/arch/powerpc/include/asm/device.h b/arch/powerpc/include/asm/device.h
new file mode 100644
index 0000000..0245bfc
--- /dev/null
+++ b/arch/powerpc/include/asm/device.h
@@ -0,0 +1,59 @@
+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#ifndef _ASM_POWERPC_DEVICE_H
+#define _ASM_POWERPC_DEVICE_H
+
+struct device_node;
+#ifdef CONFIG_PPC64
+struct pci_dn;
+struct iommu_table;
+#endif
+
+/*
+ * Arch extensions to struct device.
+ *
+ * When adding fields, consider macio_add_one_device in
+ * drivers/macintosh/macio_asic.c
+ */
+struct dev_archdata {
+ /*
+ * These two used to be a union. However, with the hybrid ops we need
+ * both so here we store both a DMA offset for direct mappings and
+ * an iommu_table for remapped DMA.
+ */
+ dma_addr_t dma_offset;
+
+#ifdef CONFIG_PPC64
+ struct iommu_table *iommu_table_base;
+#endif
+
+#ifdef CONFIG_IOMMU_API
+ void *iommu_domain;
+#endif
+#ifdef CONFIG_SWIOTLB
+ dma_addr_t max_direct_dma_addr;
+#endif
+#ifdef CONFIG_PPC64
+ struct pci_dn *pci_data;
+#endif
+#ifdef CONFIG_EEH
+ struct eeh_dev *edev;
+#endif
+#ifdef CONFIG_FAIL_IOMMU
+ int fail_iommu;
+#endif
+#ifdef CONFIG_CXL_BASE
+ struct cxl_context *cxl_ctx;
+#endif
+};
+
+struct pdev_archdata {
+ u64 dma_mask;
+};
+
+#define ARCH_HAS_DMA_GET_REQUIRED_MASK
+
+#endif /* _ASM_POWERPC_DEVICE_H */