1#ifndef __ASM_SH64_PAGE_H 2#define __ASM_SH64_PAGE_H 3 4/* 5 * This file is subject to the terms and conditions of the GNU General Public 6 * License. See the file "COPYING" in the main directory of this archive 7 * for more details. 8 * 9 * include/asm-sh64/page.h 10 * 11 * Copyright (C) 2000, 2001 Paolo Alberelli 12 * Copyright (C) 2003, 2004 Paul Mundt 13 * 14 * benedict.gaster@superh.com 19th, 24th July 2002. 15 * 16 * Modified to take account of enabling for D-CACHE support. 17 * 18 */ 19 20 21/* PAGE_SHIFT determines the page size */ 22#define PAGE_SHIFT 12 23#ifdef __ASSEMBLY__ 24#define PAGE_SIZE 4096 25#else 26#define PAGE_SIZE (1UL << PAGE_SHIFT) 27#endif 28#define PAGE_MASK (~(PAGE_SIZE-1)) 29#define PTE_MASK PAGE_MASK 30 31#if defined(CONFIG_HUGETLB_PAGE_SIZE_64K) 32#define HPAGE_SHIFT 16 33#elif defined(CONFIG_HUGETLB_PAGE_SIZE_1MB) 34#define HPAGE_SHIFT 20 35#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512MB) 36#define HPAGE_SHIFT 29 37#endif 38 39#ifdef CONFIG_HUGETLB_PAGE 40#define HPAGE_SIZE (1UL << HPAGE_SHIFT) 41#define HPAGE_MASK (~(HPAGE_SIZE-1)) 42#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT-PAGE_SHIFT) 43#define ARCH_HAS_SETCLEAR_HUGE_PTE 44#endif 45 46#ifdef __KERNEL__ 47#ifndef __ASSEMBLY__ 48 49extern struct page *mem_map; 50extern void sh64_page_clear(void *page); 51extern void sh64_page_copy(void *from, void *to); 52 53#define clear_page(page) sh64_page_clear(page) 54#define copy_page(to,from) sh64_page_copy(from, to) 55 56#if defined(CONFIG_DCACHE_DISABLED) 57 58#define clear_user_page(page, vaddr, pg) clear_page(page) 59#define copy_user_page(to, from, vaddr, pg) copy_page(to, from) 60 61#else 62 63extern void clear_user_page(void *to, unsigned long address, struct page *pg); 64extern void copy_user_page(void *to, void *from, unsigned long address, struct page *pg); 65 66#endif /* defined(CONFIG_DCACHE_DISABLED) */ 67 68/* 69 * These are used to make use of C type-checking.. 70 */ 71typedef struct { unsigned long long pte; } pte_t; 72typedef struct { unsigned long pmd; } pmd_t; 73typedef struct { unsigned long pgd; } pgd_t; 74typedef struct { unsigned long pgprot; } pgprot_t; 75 76#define pte_val(x) ((x).pte) 77#define pmd_val(x) ((x).pmd) 78#define pgd_val(x) ((x).pgd) 79#define pgprot_val(x) ((x).pgprot) 80 81#define __pte(x) ((pte_t) { (x) } ) 82#define __pmd(x) ((pmd_t) { (x) } ) 83#define __pgd(x) ((pgd_t) { (x) } ) 84#define __pgprot(x) ((pgprot_t) { (x) } ) 85 86#endif /* !__ASSEMBLY__ */ 87 88/* to align the pointer to the (next) page boundary */ 89#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) 90 91/* 92 * Kconfig defined. 93 */ 94#define __MEMORY_START (CONFIG_MEMORY_START) 95#define PAGE_OFFSET (CONFIG_CACHED_MEMORY_OFFSET) 96 97#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET) 98#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) 99#define MAP_NR(addr) ((__pa(addr)-__MEMORY_START) >> PAGE_SHIFT) 100#define VALID_PAGE(page) ((page - mem_map) < max_mapnr) 101 102#define phys_to_page(phys) (mem_map + (((phys) - __MEMORY_START) >> PAGE_SHIFT)) 103#define page_to_phys(page) (((page - mem_map) << PAGE_SHIFT) + __MEMORY_START) 104 105/* PFN start number, because of __MEMORY_START */ 106#define PFN_START (__MEMORY_START >> PAGE_SHIFT) 107#define ARCH_PFN_OFFSET (PFN_START) 108#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) 109#define pfn_valid(pfn) (((pfn) - PFN_START) < max_mapnr) 110#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) 111 112#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ 113 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) 114 115#include <asm-generic/memory_model.h> 116#include <asm-generic/page.h> 117 118#endif /* __KERNEL__ */ 119#endif /* __ASM_SH64_PAGE_H */ 120