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authorvenkatesh.pallipadi@intel.com <venkatesh.pallipadi@intel.com>2008-03-18 17:00:24 -0700
committerIngo Molnar <mingo@elte.hu>2008-04-17 17:41:20 +0200
commitb310f381d220b2c6e3fab16e8c6e4ca13eea75b2 (patch)
treedd25df964cd1280ee4f908002726b5ab921da807 /include
parentef354af4629e5cc76a3f64fc46d452f2b56d5a59 (diff)
downloadblackbird-op-linux-b310f381d220b2c6e3fab16e8c6e4ca13eea75b2.tar.gz
blackbird-op-linux-b310f381d220b2c6e3fab16e8c6e4ca13eea75b2.zip
x86: PAT add ioremap_wc() interface
Introduce ioremap_wc for wc remap. (generic wrapper is in a later patch) Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
-rw-r--r--include/asm-x86/io.h3
-rw-r--r--include/asm-x86/pgtable.h2
2 files changed, 5 insertions, 0 deletions
diff --git a/include/asm-x86/io.h b/include/asm-x86/io.h
index 6fa150fa68fa..599cad3505c1 100644
--- a/include/asm-x86/io.h
+++ b/include/asm-x86/io.h
@@ -1,3 +1,5 @@
+#define ARCH_HAS_IOREMAP_WC
+
#ifdef CONFIG_X86_32
# include "io_32.h"
#else
@@ -5,4 +7,5 @@
#endif
extern int ioremap_change_attr(unsigned long vaddr, unsigned long size,
unsigned long prot_val);
+extern void __iomem * ioremap_wc(unsigned long offset, unsigned long size);
diff --git a/include/asm-x86/pgtable.h b/include/asm-x86/pgtable.h
index ca6deb3de7c0..e814cfe96af2 100644
--- a/include/asm-x86/pgtable.h
+++ b/include/asm-x86/pgtable.h
@@ -90,6 +90,7 @@ extern pteval_t __PAGE_KERNEL, __PAGE_KERNEL_EXEC;
#define __PAGE_KERNEL_RO (__PAGE_KERNEL & ~_PAGE_RW)
#define __PAGE_KERNEL_RX (__PAGE_KERNEL_EXEC & ~_PAGE_RW)
#define __PAGE_KERNEL_EXEC_NOCACHE (__PAGE_KERNEL_EXEC | _PAGE_PCD | _PAGE_PWT)
+#define __PAGE_KERNEL_WC (__PAGE_KERNEL | _PAGE_CACHE_WC)
#define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT)
#define __PAGE_KERNEL_UC_MINUS (__PAGE_KERNEL | _PAGE_PCD)
#define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RX | _PAGE_USER)
@@ -107,6 +108,7 @@ extern pteval_t __PAGE_KERNEL, __PAGE_KERNEL_EXEC;
#define PAGE_KERNEL_RO MAKE_GLOBAL(__PAGE_KERNEL_RO)
#define PAGE_KERNEL_EXEC MAKE_GLOBAL(__PAGE_KERNEL_EXEC)
#define PAGE_KERNEL_RX MAKE_GLOBAL(__PAGE_KERNEL_RX)
+#define PAGE_KERNEL_WC MAKE_GLOBAL(__PAGE_KERNEL_WC)
#define PAGE_KERNEL_NOCACHE MAKE_GLOBAL(__PAGE_KERNEL_NOCACHE)
#define PAGE_KERNEL_UC_MINUS MAKE_GLOBAL(__PAGE_KERNEL_UC_MINUS)
#define PAGE_KERNEL_EXEC_NOCACHE MAKE_GLOBAL(__PAGE_KERNEL_EXEC_NOCACHE)
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