diff options
Diffstat (limited to 'arch/unicore32/include/asm/page.h')
| -rw-r--r-- | arch/unicore32/include/asm/page.h | 80 | 
1 files changed, 80 insertions, 0 deletions
diff --git a/arch/unicore32/include/asm/page.h b/arch/unicore32/include/asm/page.h new file mode 100644 index 00000000000..594b3226250 --- /dev/null +++ b/arch/unicore32/include/asm/page.h @@ -0,0 +1,80 @@ +/* + * linux/arch/unicore32/include/asm/page.h + * + * Code specific to PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2010 GUAN Xue-tao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __UNICORE_PAGE_H__ +#define __UNICORE_PAGE_H__ + +/* PAGE_SHIFT determines the page size */ +#define PAGE_SHIFT		12 +#define PAGE_SIZE		(_AC(1, UL) << PAGE_SHIFT) +#define PAGE_MASK		(~(PAGE_SIZE-1)) + +#ifndef __ASSEMBLY__ + +struct page; +struct vm_area_struct; + +#define clear_page(page)	memset((void *)(page), 0, PAGE_SIZE) +extern void copy_page(void *to, const void *from); + +#define clear_user_page(page, vaddr, pg)	clear_page(page) +#define copy_user_page(to, from, vaddr, pg)	copy_page(to, from) + +#undef STRICT_MM_TYPECHECKS + +#ifdef STRICT_MM_TYPECHECKS +/* + * These are used to make use of C type-checking.. + */ +typedef struct { unsigned long pte; } pte_t; +typedef struct { unsigned long pgd; } pgd_t; +typedef struct { unsigned long pgprot; } pgprot_t; + +#define pte_val(x)      ((x).pte) +#define pgd_val(x)	((x).pgd) +#define pgprot_val(x)   ((x).pgprot) + +#define __pte(x)        ((pte_t) { (x) }) +#define __pgd(x)	((pgd_t) { (x) }) +#define __pgprot(x)     ((pgprot_t) { (x) }) + +#else +/* + * .. while these make it easier on the compiler + */ +typedef unsigned long pte_t; +typedef unsigned long pgd_t; +typedef unsigned long pgprot_t; + +#define pte_val(x)      (x) +#define pgd_val(x)      (x) +#define pgprot_val(x)   (x) + +#define __pte(x)        (x) +#define __pgd(x)	(x) +#define __pgprot(x)     (x) + +#endif /* STRICT_MM_TYPECHECKS */ + +typedef struct page *pgtable_t; + +extern int pfn_valid(unsigned long); + +#include <asm/memory.h> + +#endif /* !__ASSEMBLY__ */ + +#define VM_DATA_DEFAULT_FLAGS \ +	(VM_READ | VM_WRITE | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) + +#include <asm-generic/getorder.h> + +#endif  | 
