1 files changed, 38 insertions, 1 deletions

diff --git a/include/asm-powerpc/dcr.h b/include/asm-powerpc/dcr.h
index 9338d50538f1..53b283050ab3 100644
--- a/include/asm-powerpc/dcr.h
+++ b/include/asm-powerpc/dcr.h
@@ -20,14 +20,50 @@
 #ifndef _ASM_POWERPC_DCR_H
 #define _ASM_POWERPC_DCR_H
 #ifdef __KERNEL__
+#ifndef __ASSEMBLY__
 #ifdef CONFIG_PPC_DCR
 
 #ifdef CONFIG_PPC_DCR_NATIVE
 #include <asm/dcr-native.h>
-#else
+#endif
+
+#ifdef CONFIG_PPC_DCR_MMIO
 #include <asm/dcr-mmio.h>
 #endif
 
+
+/* Indirection layer for providing both NATIVE and MMIO support. */
+
+#if defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO)
+
+#include <asm/dcr-generic.h>
+
+#define DCR_MAP_OK(host)        dcr_map_ok_generic(host)
+#define dcr_map(dev, dcr_n, dcr_c) dcr_map_generic(dev, dcr_n, dcr_c)
+#define dcr_unmap(host, dcr_c) dcr_unmap_generic(host, dcr_c)
+#define dcr_read(host, dcr_n) dcr_read_generic(host, dcr_n)
+#define dcr_write(host, dcr_n, value) dcr_write_generic(host, dcr_n, value)
+
+#else
+
+#ifdef CONFIG_PPC_DCR_NATIVE
+typedef dcr_host_native_t dcr_host_t;
+#define DCR_MAP_OK(host)        dcr_map_ok_native(host)
+#define dcr_map(dev, dcr_n, dcr_c) dcr_map_native(dev, dcr_n, dcr_c)
+#define dcr_unmap(host, dcr_c) dcr_unmap_native(host, dcr_c)
+#define dcr_read(host, dcr_n) dcr_read_native(host, dcr_n)
+#define dcr_write(host, dcr_n, value) dcr_write_native(host, dcr_n, value)
+#else
+typedef dcr_host_mmio_t dcr_host_t;
+#define DCR_MAP_OK(host)        dcr_map_ok_mmio(host)
+#define dcr_map(dev, dcr_n, dcr_c) dcr_map_mmio(dev, dcr_n, dcr_c)
+#define dcr_unmap(host, dcr_c) dcr_unmap_mmio(host, dcr_c)
+#define dcr_read(host, dcr_n) dcr_read_mmio(host, dcr_n)
+#define dcr_write(host, dcr_n, value) dcr_write_mmio(host, dcr_n, value)
+#endif
+
+#endif /* defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO) */
+
 /*
  * On CONFIG_PPC_MERGE, we have additional helpers to read the DCR
  * base from the device-tree
@@ -41,5 +77,6 @@ extern unsigned int dcr_resource_len(struct device_node *np,
 #endif /* CONFIG_PPC_MERGE */
 
 #endif /* CONFIG_PPC_DCR */
+#endif /* __ASSEMBLY__ */
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_DCR_H */