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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#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
Linus Torvalds1da177e2005-04-16 15:20:36 -070020
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)
David Gibson63551ae2005-06-21 17:14:44 -070043#define ARCH_HAS_SETCLEAR_HUGE_PTE
Linus Torvalds1da177e2005-04-16 15:20:36 -070044#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)
KAMEZAWA Hiroyuki309d34b2006-03-27 01:15:47 -0800107#define ARCH_PFN_OFFSET (PFN_START)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108#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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115#endif /* __KERNEL__ */
116
KAMEZAWA Hiroyuki309d34b2006-03-27 01:15:47 -0800117#include <asm-generic/memory_model.h>
Stephen Rothwellfd4fd5a2005-09-03 15:54:30 -0700118#include <asm-generic/page.h>
119
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120#endif /* __ASM_SH64_PAGE_H */