#ifndef _ALPHA_PAGE_H#define _ALPHA_PAGE_H #include <asm/pal.h> /* PAGE_SHIFT determines the page size */#define PAGE_SHIFT	13#define PAGE_SIZE	(1UL << PAGE_SHIFT)#define PAGE_MASK	(~(PAGE_SIZE-1)) #ifdef __KERNEL__ #ifndef __ASSEMBLY__ #define STRICT_MM_TYPECHECKS extern void clear_page(void *page);#define clear_user_page(page, vaddr, pg)	clear_page(page) #define alloc_zeroed_user_highpage(vma, vaddr) alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vma, vmaddr)#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE extern void copy_page(void * _to, void * _from);#define copy_user_page(to, from, vaddr, pg)	copy_page(to, from) #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 pmd; } pmd_t;typedef struct { unsigned long pgd; } pgd_t;typedef struct { unsigned long pgprot; } pgprot_t; #define pte_val(x)	((x).pte)#define pmd_val(x)	((x).pmd)#define pgd_val(x)	((x).pgd)#define pgprot_val(x)	((x).pgprot) #define __pte(x)	((pte_t) { (x) } )#define __pmd(x)	((pmd_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 pmd_t;typedef unsigned long pgd_t;typedef unsigned long pgprot_t; #define pte_val(x)	(x)#define pmd_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 */ #ifdef USE_48_BIT_KSEG#define PAGE_OFFSET		0xffff800000000000UL#else#define PAGE_OFFSET		0xfffffc0000000000UL#endif #else #ifdef USE_48_BIT_KSEG#define PAGE_OFFSET		0xffff800000000000#else#define PAGE_OFFSET		0xfffffc0000000000#endif #endif /* !__ASSEMBLY__ */ /* to align the pointer to the (next) page boundary */#define PAGE_ALIGN(addr)	(((addr)+PAGE_SIZE-1)&PAGE_MASK) #define __pa(x)			((unsigned long) (x) - PAGE_OFFSET)#define __va(x)			((void *)((unsigned long) (x) + PAGE_OFFSET))#ifndef CONFIG_DISCONTIGMEM#define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) #define pfn_valid(pfn)		((pfn) < max_mapnr)#define virt_addr_valid(kaddr)	pfn_valid(__pa(kaddr) >> PAGE_SHIFT)#endif /* CONFIG_DISCONTIGMEM */ #define VM_DATA_DEFAULT_FLAGS		(VM_READ | VM_WRITE | VM_EXEC | \					 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)#endif /* __KERNEL__ */ #include <asm-generic/memory_model.h>#include <asm-generic/page.h> #endif /* _ALPHA_PAGE_H */