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-rw-r--r--arch/sh/include/asm/io.h4
-rw-r--r--arch/sh/mm/Makefile_322
-rw-r--r--arch/sh/mm/Makefile_642
-rw-r--r--arch/sh/mm/mmap.c31
4 files changed, 37 insertions, 2 deletions
diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h
index 436c28539577..65eaae34e753 100644
--- a/arch/sh/include/asm/io.h
+++ b/arch/sh/include/asm/io.h
@@ -293,6 +293,10 @@ __ioremap_mode(unsigned long offset, unsigned long size, unsigned long flags)
293 */ 293 */
294#define xlate_dev_kmem_ptr(p) p 294#define xlate_dev_kmem_ptr(p) p
295 295
296#define ARCH_HAS_VALID_PHYS_ADDR_RANGE
297int valid_phys_addr_range(unsigned long addr, size_t size);
298int valid_mmap_phys_addr_range(unsigned long pfn, size_t size);
299
296#endif /* __KERNEL__ */ 300#endif /* __KERNEL__ */
297 301
298#endif /* __ASM_SH_IO_H */ 302#endif /* __ASM_SH_IO_H */
diff --git a/arch/sh/mm/Makefile_32 b/arch/sh/mm/Makefile_32
index 70e0906023cc..f066e76da204 100644
--- a/arch/sh/mm/Makefile_32
+++ b/arch/sh/mm/Makefile_32
@@ -2,7 +2,7 @@
2# Makefile for the Linux SuperH-specific parts of the memory manager. 2# Makefile for the Linux SuperH-specific parts of the memory manager.
3# 3#
4 4
5obj-y := init.o extable_32.o consistent.o 5obj-y := init.o extable_32.o consistent.o mmap.o
6 6
7ifndef CONFIG_CACHE_OFF 7ifndef CONFIG_CACHE_OFF
8cache-$(CONFIG_CPU_SH2) := cache-sh2.o 8cache-$(CONFIG_CPU_SH2) := cache-sh2.o
diff --git a/arch/sh/mm/Makefile_64 b/arch/sh/mm/Makefile_64
index 0d92a8a3ac9a..9481d0f54efd 100644
--- a/arch/sh/mm/Makefile_64
+++ b/arch/sh/mm/Makefile_64
@@ -2,7 +2,7 @@
2# Makefile for the Linux SuperH-specific parts of the memory manager. 2# Makefile for the Linux SuperH-specific parts of the memory manager.
3# 3#
4 4
5obj-y := init.o consistent.o 5obj-y := init.o consistent.o mmap.o
6 6
7mmu-y := tlb-nommu.o pg-nommu.o extable_32.o 7mmu-y := tlb-nommu.o pg-nommu.o extable_32.o
8mmu-$(CONFIG_MMU) := fault_64.o ioremap_64.o tlbflush_64.o tlb-sh5.o \ 8mmu-$(CONFIG_MMU) := fault_64.o ioremap_64.o tlbflush_64.o tlb-sh5.o \
diff --git a/arch/sh/mm/mmap.c b/arch/sh/mm/mmap.c
new file mode 100644
index 000000000000..1f3cc3d92d3d
--- /dev/null
+++ b/arch/sh/mm/mmap.c
@@ -0,0 +1,31 @@
1/*
2 * arch/sh/mm/mmap.c
3 *
4 * Copyright (C) 2008 Paul Mundt
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
9 */
10#include <linux/io.h>
11#include <linux/mm.h>
12#include <asm/page.h>
13
14/*
15 * You really shouldn't be using read() or write() on /dev/mem. This
16 * might go away in the future.
17 */
18int valid_phys_addr_range(unsigned long addr, size_t count)
19{
20 if (addr < (PAGE_OFFSET + (PFN_START << PAGE_SHIFT)))
21 return 0;
22 if (addr + count > __pa(high_memory))
23 return 0;
24
25 return 1;
26}
27
28int valid_mmap_phys_addr_range(unsigned long pfn, size_t size)
29{
30 return 1;
31}