#ifndef __ASM_SH64_PAGE_H #define __ASM_SH64_PAGE_H /* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * include/asm-sh64/page.h * * Copyright (C) 2000, 2001 Paolo Alberelli * Copyright (C) 2003, 2004 Paul Mundt * * benedict.gaster@superh.com 19th, 24th July 2002. * * Modified to take account of enabling for D-CACHE support. * */ /* PAGE_SHIFT determines the page size */ #define PAGE_SHIFT 12 #ifdef __ASSEMBLY__ #define PAGE_SIZE 4096 #else #define PAGE_SIZE (1UL << PAGE_SHIFT) #endif #define PAGE_MASK (~(PAGE_SIZE-1)) #define PTE_MASK PAGE_MASK #if defined(CONFIG_HUGETLB_PAGE_SIZE_64K) #define HPAGE_SHIFT 16 #elif defined(CONFIG_HUGETLB_PAGE_SIZE_1MB) #define HPAGE_SHIFT 20 #elif defined(CONFIG_HUGETLB_PAGE_SIZE_512MB) #define HPAGE_SHIFT 29 #endif #ifdef CONFIG_HUGETLB_PAGE #define HPAGE_SIZE (1UL << HPAGE_SHIFT) #define HPAGE_MASK (~(HPAGE_SIZE-1)) #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT-PAGE_SHIFT) #define ARCH_HAS_SETCLEAR_HUGE_PTE #endif #ifdef __KERNEL__ #ifndef __ASSEMBLY__ extern struct page *mem_map; extern void sh64_page_clear(void *page); extern void sh64_page_copy(void *from, void *to); #define clear_page(page) sh64_page_clear(page) #define copy_page(to,from) sh64_page_copy(from, to) #if defined(CONFIG_DCACHE_DISABLED) #define clear_user_page(page, vaddr, pg) clear_page(page) #define copy_user_page(to, from, vaddr, pg) copy_page(to, from) #else extern void clear_user_page(void *to, unsigned long address, struct page *pg); extern void copy_user_page(void *to, void *from, unsigned long address, struct page *pg); #endif /* defined(CONFIG_DCACHE_DISABLED) */ /* * These are used to make use of C type-checking.. */ typedef struct { unsigned long 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) } ) #endif /* !__ASSEMBLY__ */ /* to align the pointer to the (next) page boundary */ #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) /* * Kconfig defined. */ #define __MEMORY_START (CONFIG_MEMORY_START) #define PAGE_OFFSET (CONFIG_CACHED_MEMORY_OFFSET) #define __pa(x) ((unsigned long)(x)-PAGE_OFFSET) #define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) #define MAP_NR(addr) ((__pa(addr)-__MEMORY_START) >> PAGE_SHIFT) #define VALID_PAGE(page) ((page - mem_map) < max_mapnr) #define phys_to_page(phys) (mem_map + (((phys) - __MEMORY_START) >> PAGE_SHIFT)) #define page_to_phys(page) (((page - mem_map) << PAGE_SHIFT) + __MEMORY_START) /* PFN start number, because of __MEMORY_START */ #define PFN_START (__MEMORY_START >> PAGE_SHIFT) #define ARCH_PFN_OFFSET (PFN_START) #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) #define pfn_valid(pfn) (((pfn) - PFN_START) < max_mapnr) #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) #include <asm-generic/memory_model.h> #include <asm-generic/page.h> #endif /* __KERNEL__ */ #endif /* __ASM_SH64_PAGE_H */