#ifndef _BLACKFIN_PAGE_H #define _BLACKFIN_PAGE_H /* PAGE_SHIFT determines the page size */ #define PAGE_SHIFT 12 #ifdef __ASSEMBLY__ #define PAGE_SIZE (1 << PAGE_SHIFT) #else #define PAGE_SIZE (1UL << PAGE_SHIFT) #endif #define PAGE_MASK (~(PAGE_SIZE-1)) #ifdef __KERNEL__ #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(page) memset((page), 0, PAGE_SIZE) #define copy_page(to,from) memcpy((to), (from), PAGE_SIZE) #define clear_user_page(page, vaddr,pg) clear_page(page) #define copy_user_page(to, from, vaddr,pg) copy_page(to, from) /* * These are used to make use of C type-checking.. */ typedef struct { unsigned long pte; } pte_t; typedef struct { unsigned long pmd[16]; } 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[0]) #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) } ) /* to align the pointer to the (next) page boundary */ #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) extern unsigned long memory_start; extern unsigned long memory_end; #endif /* !__ASSEMBLY__ */ #include <asm/page_offset.h> #include <asm/io.h> #define PAGE_OFFSET (PAGE_OFFSET_RAW) #ifndef __ASSEMBLY__ #define __pa(vaddr) virt_to_phys((void *)(vaddr)) #define __va(paddr) phys_to_virt((unsigned long)(paddr)) #define MAP_NR(addr) (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT) #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) #define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)) #define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET) #define VALID_PAGE(page) ((page - mem_map) < max_mapnr) #define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn)) #define page_to_pfn(page) virt_to_pfn(page_to_virt(page)) #define pfn_valid(pfn) ((pfn) < max_mapnr) #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \ ((void *)(kaddr) < (void *)memory_end)) #include <asm-generic/page.h> #endif /* __ASSEMBLY__ */ #endif /* __KERNEL__ */ #endif /* _BLACKFIN_PAGE_H */