From cb700aa4f13d38726defab3060d3ebeaf67dc189 Mon Sep 17 00:00:00 2001
From: Paul Mundt <lethal@linux-sh.org>
Date: Fri, 12 Sep 2008 20:41:05 +0900
Subject: [PATCH] sh: ioremap_prot support.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---
arch/sh/Kconfig | 1 +
arch/sh/include/asm/io.h | 2 ++
arch/sh/include/asm/page.h | 2 ++
arch/sh/include/asm/pgtable.h | 1 +
4 files changed, 6 insertions(+)
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index bbdcd6418ef5..434183eb4f12 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -12,6 +12,7 @@ config SUPERH
select HAVE_IDE
select HAVE_OPROFILE
select HAVE_GENERIC_DMA_COHERENT
+ select HAVE_IOREMAP_PROT
help
The SuperH is a RISC processor targeted for use in embedded systems
and consumer electronics; it was also used in the Sega Dreamcast
diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h
index e49cfee95fb2..1857666136f2 100644
--- a/arch/sh/include/asm/io.h
+++ b/arch/sh/include/asm/io.h
@@ -347,6 +347,8 @@ __ioremap_mode(unsigned long offset, unsigned long size, unsigned long flags)
__ioremap_mode((offset), (size), _PAGE_CACHABLE)
#define p3_ioremap(offset, size, flags) \
__ioremap((offset), (size), (flags))
+#define ioremap_prot(offset, size, flags) \
+ __ioremap_mode((offset), (size), (flags))
#define iounmap(addr) \
__iounmap((addr))
diff --git a/arch/sh/include/asm/page.h b/arch/sh/include/asm/page.h
index 77fb8bf02e4e..5871d78e47e5 100644
--- a/arch/sh/include/asm/page.h
+++ b/arch/sh/include/asm/page.h
@@ -104,6 +104,8 @@ typedef struct { unsigned long pgd; } pgd_t;
typedef struct page *pgtable_t;
+#define pte_pgprot(x) __pgprot(pte_val(x) & PTE_FLAGS_MASK)
+
#endif /* !__ASSEMBLY__ */
/*
diff --git a/arch/sh/include/asm/pgtable.h b/arch/sh/include/asm/pgtable.h
index a4a8f8b93463..52220d70a096 100644
--- a/arch/sh/include/asm/pgtable.h
+++ b/arch/sh/include/asm/pgtable.h
@@ -76,6 +76,7 @@ extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)];
#endif
#define PTE_PHYS_MASK (PHYS_ADDR_MASK & PAGE_MASK)
+#define PTE_FLAGS_MASK (~(PTE_PHYS_MASK) << PAGE_SHIFT)
#ifdef CONFIG_SUPERH32
#define VMALLOC_START (P3SEG)