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authorJeremy Fitzhardinge <jeremy@goop.org>2008-01-30 13:32:43 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:32:43 +0100
commit98fd5aee348f0420afd1c636790d50aaaec6ceec (patch)
treec2e0e421ce7cfb809b643a6934e19f82e2c1ceae /include/asm-x86/page.h
parent6724a1d2fc6b40d55f232b8dacc12a915878bdc7 (diff)
x86: page.h: move pa and va related things
# HG changeset patch # User Jeremy Fitzhardinge <jeremy@xensource.com> # Date 1199319656 28800 # Node ID d617b72a0cc9d14bde2087d065c36d4ed3265761 # Parent 3bd7db6e85e66e7f3362874802df26a82fcb2d92 x86: page.h: move pa and va related things Move and unify the virtual<->physical address space conversion functions. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/asm-x86/page.h')
-rw-r--r--include/asm-x86/page.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/include/asm-x86/page.h b/include/asm-x86/page.h
index ef393c3df90..9830eeb5717 100644
--- a/include/asm-x86/page.h
+++ b/include/asm-x86/page.h
@@ -80,6 +80,9 @@
void clear_page(void *page);
void copy_page(void *to, void *from);
+extern unsigned long __phys_addr(unsigned long);
+#define __phys_reloc_hide(x) (x)
+
/*
* These are used to make use of C type-checking..
*/
@@ -174,6 +177,13 @@ static inline pte_t native_make_pte(unsigned long val)
#endif
#ifndef __ASSEMBLY__
+#define __phys_addr(x) ((x)-PAGE_OFFSET)
+#define __phys_reloc_hide(x) RELOC_HIDE((x), 0)
+
+#ifdef CONFIG_FLATMEM
+#define pfn_valid(pfn) ((pfn) < max_mapnr)
+#endif /* CONFIG_FLATMEM */
+
#ifdef CONFIG_X86_USE_3DNOW
#include <asm/mmx.h>
@@ -299,6 +309,20 @@ static inline pmdval_t native_pmd_val(pmd_t pmd)
#endif /* CONFIG_PARAVIRT */
+#define __pa(x) __phys_addr((unsigned long)(x))
+/* __pa_symbol should be used for C visible symbols.
+ This seems to be the official gcc blessed way to do such arithmetic. */
+#define __pa_symbol(x) __pa(__phys_reloc_hide((unsigned long)(x)))
+
+#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET))
+
+#define __boot_va(x) __va(x)
+#define __boot_pa(x) __pa(x)
+
+#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
+#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
+#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
+
#endif /* __ASSEMBLY__ */