#ifndef _ASM_PAGE_H #define _ASM_PAGE_H #ifdef __KERNEL__ #include <asm/virtconvert.h> #include <asm/mem-layout.h> #include <asm/sections.h> #include <asm/setup.h> #ifndef __ASSEMBLY__ #define get_user_page(vaddr) __get_free_page(GFP_KERNEL) #define free_user_page(page, addr) free_page(addr) #define clear_page(pgaddr) memset((pgaddr), 0, PAGE_SIZE) #define copy_page(to,from) memcpy((to), (from), PAGE_SIZE) #define clear_user_page(pgaddr, vaddr, page) memset((pgaddr), 0, PAGE_SIZE) #define copy_user_page(vto, vfrom, vaddr, topg) memcpy((vto), (vfrom), PAGE_SIZE) /* * These are used to make use of C type-checking.. */ typedef struct { unsigned long pte; } pte_t; typedef struct { unsigned long ste[64];} pmd_t; typedef struct { pmd_t pue[1]; } pud_t; typedef struct { pud_t pge[1]; } pgd_t; typedef struct { unsigned long pgprot; } pgprot_t; #define pte_val(x) ((x).pte) #define pmd_val(x) ((x).ste[0]) #define pud_val(x) ((x).pue[0]) #define pgd_val(x) ((x).pge[0]) #define pgprot_val(x) ((x).pgprot) #define __pte(x) ((pte_t) { (x) } ) #define __pmd(x) ((pmd_t) { (x) } ) #define __pud(x) ((pud_t) { (x) } ) #define __pgd(x) ((pgd_t) { (x) } ) #define __pgprot(x) ((pgprot_t) { (x) } ) #define PTE_MASK PAGE_MASK /* to align the pointer to the (next) page boundary */ #define PAGE_ALIGN(addr) (((addr) + PAGE_SIZE - 1) & PAGE_MASK) #define devmem_is_allowed(pfn) 1 #define __pa(vaddr) virt_to_phys((void *) (unsigned long) (vaddr)) #define __va(paddr) phys_to_virt((unsigned long) (paddr)) #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) extern unsigned long max_low_pfn; extern unsigned long min_low_pfn; extern unsigned long max_pfn; #ifdef CONFIG_MMU #define pfn_valid(pfn) ((pfn) < max_mapnr) #else #define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT) #define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) < max_low_pfn) #endif #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) #ifdef CONFIG_MMU #define VM_DATA_DEFAULT_FLAGS \ (VM_READ | VM_WRITE | \ ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) #endif #endif /* __ASSEMBLY__ */ #endif /* __KERNEL__ */ #ifdef CONFIG_CONTIGUOUS_PAGE_ALLOC #define WANT_PAGE_VIRTUAL 1 #endif #include <asm-generic/memory_model.h> #include <asm-generic/page.h> #endif /* _ASM_PAGE_H */