diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 5f220e903e5a..b63ad4698cf8 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -25,6 +25,7 @@ config SUPERH
 	select GENERIC_SCHED_CLOCK
 	select GENERIC_SMP_IDLE_THREAD
 	select GUP_GET_PTE_LOW_HIGH if X2TLB
+	select GENERIC_IOREMAP if MMU
 	select HAVE_ARCH_AUDITSYSCALL
 	select HAVE_ARCH_KGDB
 	select HAVE_ARCH_SECCOMP_FILTER
diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h
index fba90e670ed4..f3edd92a8869 100644
--- a/arch/sh/include/asm/io.h
+++ b/arch/sh/include/asm/io.h
@@ -119,6 +119,26 @@ void __raw_readsl(const void __iomem *addr, void *data, int longlen);
 
 __BUILD_MEMORY_STRING(__raw_, q, u64)
 
+#define ioread8 ioread8
+#define ioread16 ioread16
+#define ioread16be ioread16be
+#define ioread32 ioread32
+#define ioread32be ioread32be
+
+#define iowrite8 iowrite8
+#define iowrite16 iowrite16
+#define iowrite16be iowrite16be
+#define iowrite32 iowrite32
+#define iowrite32be iowrite32be
+
+#define ioread8_rep ioread8_rep
+#define ioread16_rep ioread16_rep
+#define ioread32_rep ioread32_rep
+
+#define iowrite8_rep iowrite8_rep
+#define iowrite16_rep iowrite16_rep
+#define iowrite32_rep iowrite32_rep
+
 #ifdef CONFIG_HAS_IOPORT_MAP
 
 /*
@@ -225,6 +245,9 @@ __BUILD_IOPORT_STRING(q, u64)
 #define IO_SPACE_LIMIT 0xffffffff
 
 /* We really want to try and get these to memcpy etc */
+#define memset_io memset_io
+#define memcpy_fromio memcpy_fromio
+#define memcpy_toio memcpy_toio
 void memcpy_fromio(void *, const volatile void __iomem *, unsigned long);
 void memcpy_toio(volatile void __iomem *, const void *, unsigned long);
 void memset_io(volatile void __iomem *, int, unsigned long);
@@ -243,40 +266,20 @@ unsigned long long poke_real_address_q(unsigned long long addr,
 #endif
 
 #ifdef CONFIG_MMU
-void iounmap(void __iomem *addr);
-void __iomem *__ioremap_caller(phys_addr_t offset, unsigned long size,
-			       pgprot_t prot, void *caller);
-
-static inline void __iomem *ioremap(phys_addr_t offset, unsigned long size)
-{
-	return __ioremap_caller(offset, size, PAGE_KERNEL_NOCACHE,
-			__builtin_return_address(0));
-}
-
-static inline void __iomem *
-ioremap_cache(phys_addr_t offset, unsigned long size)
-{
-	return __ioremap_caller(offset, size, PAGE_KERNEL,
-			__builtin_return_address(0));
-}
-#define ioremap_cache ioremap_cache
+/*
+ * I/O memory mapping functions.
+ */
+void __iomem *
+arch_ioremap(phys_addr_t *paddr, size_t size, unsigned long *prot_val);
+#define arch_ioremap arch_ioremap
 
-#ifdef CONFIG_HAVE_IOREMAP_PROT
-static inline void __iomem *ioremap_prot(phys_addr_t offset, unsigned long size,
-		unsigned long flags)
-{
-	return __ioremap_caller(offset, size, __pgprot(flags),
-			__builtin_return_address(0));
-}
-#endif /* CONFIG_HAVE_IOREMAP_PROT */
+bool arch_iounmap(void __iomem *addr);
+#define arch_iounmap arch_iounmap
 
-#else /* CONFIG_MMU */
-static inline void __iomem *ioremap(phys_addr_t offset, size_t size)
-{
-	return (void __iomem *)(unsigned long)offset;
-}
+#define _PAGE_IOREMAP pgprot_val(PAGE_KERNEL_NOCACHE)
 
-static inline void iounmap(volatile void __iomem *addr) { }
+#define ioremap_cache(addr, size)  \
+	ioremap_prot((addr), (size), pgprot_val(PAGE_KERNEL))
 #endif /* CONFIG_MMU */
 
 #define ioremap_uc	ioremap
@@ -287,6 +290,8 @@ static inline void iounmap(volatile void __iomem *addr) { }
  */
 #define xlate_dev_mem_ptr(p)	__va(p)
 
+#include <asm-generic/io.h>
+
 #define ARCH_HAS_VALID_PHYS_ADDR_RANGE
 int valid_phys_addr_range(phys_addr_t addr, size_t size);
 int valid_mmap_phys_addr_range(unsigned long pfn, size_t size);
diff --git a/arch/sh/include/asm/io_noioport.h b/arch/sh/include/asm/io_noioport.h
index f7938fe0f911..5ba4116b4265 100644
--- a/arch/sh/include/asm/io_noioport.h
+++ b/arch/sh/include/asm/io_noioport.h
@@ -53,6 +53,13 @@ static inline void ioport_unmap(void __iomem *addr)
 #define outw_p(x, addr)	outw((x), (addr))
 #define outl_p(x, addr)	outl((x), (addr))
 
+#define insb insb
+#define insw insw
+#define insl insl
+#define outsb outsb
+#define outsw outsw
+#define outsl outsl
+
 static inline void insb(unsigned long port, void *dst, unsigned long count)
 {
 	BUG();
diff --git a/arch/sh/mm/ioremap.c b/arch/sh/mm/ioremap.c
index 21342581144d..4b20f00a3ca3 100644
--- a/arch/sh/mm/ioremap.c
+++ b/arch/sh/mm/ioremap.c
@@ -72,22 +72,12 @@ __ioremap_29bit(phys_addr_t offset, unsigned long size, pgprot_t prot)
 #define __ioremap_29bit(offset, size, prot)		NULL
 #endif /* CONFIG_29BIT */
 
-/*
- * Remap an arbitrary physical address space into the kernel virtual
- * address space. Needed when the kernel wants to access high addresses
- * directly.
- *
- * NOTE! We need to allow non-page-aligned mappings too: we will obviously
- * have to convert them into an offset in a page-aligned mapping, but the
- * caller shouldn't need to know that small detail.
- */
 void __iomem * __ref
-__ioremap_caller(phys_addr_t phys_addr, unsigned long size,
-		 pgprot_t pgprot, void *caller)
+arch_ioremap(phys_addr_t *paddr, size_t size, unsigned long *prot_val)
 {
-	struct vm_struct *area;
-	unsigned long offset, last_addr, addr, orig_addr;
+	unsigned long last_addr, phys_addr = *paddr;
 	void __iomem *mapped;
+	pgprot_t pgprot = __pgprot(*prot_val);
 
 	mapped = __ioremap_trapped(phys_addr, size);
 	if (mapped)
@@ -100,7 +90,7 @@ __ioremap_caller(phys_addr_t phys_addr, unsigned long size,
 	/* Don't allow wraparound or zero size */
 	last_addr = phys_addr + size - 1;
 	if (!size || last_addr < phys_addr)
-		return NULL;
+		return IOMEM_ERR_PTR(-EINVAL);
 
 	/*
 	 * If we can't yet use the regular approach, go the fixmap route.
@@ -112,34 +102,13 @@ __ioremap_caller(phys_addr_t phys_addr, unsigned long size,
 	 * First try to remap through the PMB.
 	 * PMB entries are all pre-faulted.
 	 */
-	mapped = pmb_remap_caller(phys_addr, size, pgprot, caller);
+	mapped = pmb_remap_caller(phys_addr, size, pgprot,
+			__builtin_return_address(0));
 	if (mapped && !IS_ERR(mapped))
 		return mapped;
 
-	/*
-	 * Mappings have to be page-aligned
-	 */
-	offset = phys_addr & ~PAGE_MASK;
-	phys_addr &= PAGE_MASK;
-	size = PAGE_ALIGN(last_addr+1) - phys_addr;
-
-	/*
-	 * Ok, go for it..
-	 */
-	area = get_vm_area_caller(size, VM_IOREMAP, caller);
-	if (!area)
-		return NULL;
-	area->phys_addr = phys_addr;
-	orig_addr = addr = (unsigned long)area->addr;
-
-	if (ioremap_page_range(addr, addr + size, phys_addr, pgprot)) {
-		vunmap((void *)orig_addr);
-		return NULL;
-	}
-
-	return (void __iomem *)(offset + (char *)orig_addr);
+	return NULL;
 }
-EXPORT_SYMBOL(__ioremap_caller);
 
 /*
  * Simple checks for non-translatable mappings.
@@ -158,35 +127,27 @@ static inline int iomapping_nontranslatable(unsigned long offset)
 	return 0;
 }
 
-void iounmap(void __iomem *addr)
+bool arch_iounmap(void __iomem *addr)
 {
 	unsigned long vaddr = (unsigned long __force)addr;
-	struct vm_struct *p;
 
 	/*
 	 * Nothing to do if there is no translatable mapping.
 	 */
 	if (iomapping_nontranslatable(vaddr))
-		return;
+		return false;
 
 	/*
 	 * There's no VMA if it's from an early fixed mapping.
 	 */
 	if (iounmap_fixed(addr) == 0)
-		return;
+		return false;
 
 	/*
 	 * If the PMB handled it, there's nothing else to do.
 	 */
 	if (pmb_unmap(addr) == 0)
-		return;
-
-	p = remove_vm_area((void *)(vaddr & PAGE_MASK));
-	if (!p) {
-		printk(KERN_ERR "%s: bad address %p\n", __func__, addr);
-		return;
-	}
+		return false;
 
-	kfree(p);
+	return true;
 }
-EXPORT_SYMBOL(iounmap);
