nds32: Use asm-generic/io.h
Convert the nds32 architecture to make use of the new asm-generic/io.h
to provide address mapping functions. As the generic implementations are
suitable for nds32 this is primarily a matter of removing code.
Feedback from architecture maintainers is welcome.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Macpaul Lin <macpaul@andestech.com>
diff --git a/arch/nds32/include/asm/io.h b/arch/nds32/include/asm/io.h
index 25ef9a4..c6d8d9b 100644
--- a/arch/nds32/include/asm/io.h
+++ b/arch/nds32/include/asm/io.h
@@ -38,16 +38,6 @@
{
}
-/*
- * Given a physical address and a length, return a virtual address
- * that can be used to access the memory range with the caching
- * properties specified by "flags".
- */
-#define MAP_NOCACHE (0)
-#define MAP_WRCOMBINE (0)
-#define MAP_WRBACK (0)
-#define MAP_WRTHROUGH (0)
-
#ifdef CONFIG_ARCH_MAP_SYSMEM
static inline void *map_sysmem(phys_addr_t paddr, unsigned long len)
{
@@ -69,25 +59,6 @@
}
#endif
-static inline void *
-map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
-{
- return (void *)paddr;
-}
-
-/*
- * Take down a mapping set up by map_physmem().
- */
-static inline void unmap_physmem(void *vaddr, unsigned long flags)
-{
-
-}
-
-static inline phys_addr_t virt_to_phys(void *vaddr)
-{
- return (phys_addr_t)(vaddr);
-}
-
/*
* Generic virtual read/write. Note that we don't support half-word
* read/writes. We define __arch_*[bl] here, and leave __arch_*w
@@ -480,5 +451,8 @@
#define isa_check_signature(io, sig, len) (0)
#endif /* __mem_isa */
+
+#include <asm-generic/io.h>
+
#endif /* __KERNEL__ */
#endif /* __ASM_NDS_IO_H */