Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * include/asm-s390/page.h |
| 3 | * |
| 4 | * S390 version |
| 5 | * Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation |
| 6 | * Author(s): Hartmut Penner (hp@de.ibm.com) |
| 7 | */ |
| 8 | |
| 9 | #ifndef _S390_PAGE_H |
| 10 | #define _S390_PAGE_H |
| 11 | |
| 12 | #include <asm/setup.h> |
| 13 | #include <asm/types.h> |
| 14 | |
| 15 | /* PAGE_SHIFT determines the page size */ |
| 16 | #define PAGE_SHIFT 12 |
| 17 | #define PAGE_SIZE (1UL << PAGE_SHIFT) |
| 18 | #define PAGE_MASK (~(PAGE_SIZE-1)) |
Peter Oberparleiter | 0b642ed | 2005-05-01 08:58:58 -0700 | [diff] [blame] | 19 | #define PAGE_DEFAULT_ACC 0 |
| 20 | #define PAGE_DEFAULT_KEY (PAGE_DEFAULT_ACC << 4) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | |
| 22 | #ifdef __KERNEL__ |
| 23 | #ifndef __ASSEMBLY__ |
| 24 | |
| 25 | #ifndef __s390x__ |
| 26 | |
| 27 | static inline void clear_page(void *page) |
| 28 | { |
| 29 | register_pair rp; |
| 30 | |
| 31 | rp.subreg.even = (unsigned long) page; |
| 32 | rp.subreg.odd = (unsigned long) 4096; |
| 33 | asm volatile (" slr 1,1\n" |
| 34 | " mvcl %0,0" |
| 35 | : "+&a" (rp) : : "memory", "cc", "1" ); |
| 36 | } |
| 37 | |
| 38 | static inline void copy_page(void *to, void *from) |
| 39 | { |
| 40 | if (MACHINE_HAS_MVPG) |
| 41 | asm volatile (" sr 0,0\n" |
| 42 | " mvpg %0,%1" |
| 43 | : : "a" ((void *)(to)), "a" ((void *)(from)) |
| 44 | : "memory", "cc", "0" ); |
| 45 | else |
| 46 | asm volatile (" mvc 0(256,%0),0(%1)\n" |
| 47 | " mvc 256(256,%0),256(%1)\n" |
| 48 | " mvc 512(256,%0),512(%1)\n" |
| 49 | " mvc 768(256,%0),768(%1)\n" |
| 50 | " mvc 1024(256,%0),1024(%1)\n" |
| 51 | " mvc 1280(256,%0),1280(%1)\n" |
| 52 | " mvc 1536(256,%0),1536(%1)\n" |
| 53 | " mvc 1792(256,%0),1792(%1)\n" |
| 54 | " mvc 2048(256,%0),2048(%1)\n" |
| 55 | " mvc 2304(256,%0),2304(%1)\n" |
| 56 | " mvc 2560(256,%0),2560(%1)\n" |
| 57 | " mvc 2816(256,%0),2816(%1)\n" |
| 58 | " mvc 3072(256,%0),3072(%1)\n" |
| 59 | " mvc 3328(256,%0),3328(%1)\n" |
| 60 | " mvc 3584(256,%0),3584(%1)\n" |
| 61 | " mvc 3840(256,%0),3840(%1)\n" |
| 62 | : : "a"((void *)(to)),"a"((void *)(from)) |
| 63 | : "memory" ); |
| 64 | } |
| 65 | |
| 66 | #else /* __s390x__ */ |
| 67 | |
| 68 | static inline void clear_page(void *page) |
| 69 | { |
| 70 | asm volatile (" lgr 2,%0\n" |
| 71 | " lghi 3,4096\n" |
| 72 | " slgr 1,1\n" |
| 73 | " mvcl 2,0" |
| 74 | : : "a" ((void *) (page)) |
| 75 | : "memory", "cc", "1", "2", "3" ); |
| 76 | } |
| 77 | |
| 78 | static inline void copy_page(void *to, void *from) |
| 79 | { |
| 80 | if (MACHINE_HAS_MVPG) |
| 81 | asm volatile (" sgr 0,0\n" |
| 82 | " mvpg %0,%1" |
| 83 | : : "a" ((void *)(to)), "a" ((void *)(from)) |
| 84 | : "memory", "cc", "0" ); |
| 85 | else |
| 86 | asm volatile (" mvc 0(256,%0),0(%1)\n" |
| 87 | " mvc 256(256,%0),256(%1)\n" |
| 88 | " mvc 512(256,%0),512(%1)\n" |
| 89 | " mvc 768(256,%0),768(%1)\n" |
| 90 | " mvc 1024(256,%0),1024(%1)\n" |
| 91 | " mvc 1280(256,%0),1280(%1)\n" |
| 92 | " mvc 1536(256,%0),1536(%1)\n" |
| 93 | " mvc 1792(256,%0),1792(%1)\n" |
| 94 | " mvc 2048(256,%0),2048(%1)\n" |
| 95 | " mvc 2304(256,%0),2304(%1)\n" |
| 96 | " mvc 2560(256,%0),2560(%1)\n" |
| 97 | " mvc 2816(256,%0),2816(%1)\n" |
| 98 | " mvc 3072(256,%0),3072(%1)\n" |
| 99 | " mvc 3328(256,%0),3328(%1)\n" |
| 100 | " mvc 3584(256,%0),3584(%1)\n" |
| 101 | " mvc 3840(256,%0),3840(%1)\n" |
| 102 | : : "a"((void *)(to)),"a"((void *)(from)) |
| 103 | : "memory" ); |
| 104 | } |
| 105 | |
| 106 | #endif /* __s390x__ */ |
| 107 | |
| 108 | #define clear_user_page(page, vaddr, pg) clear_page(page) |
| 109 | #define copy_user_page(to, from, vaddr, pg) copy_page(to, from) |
| 110 | |
| 111 | #define alloc_zeroed_user_highpage(vma, vaddr) alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vma, vaddr) |
| 112 | #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE |
| 113 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | /* |
| 115 | * These are used to make use of C type-checking.. |
| 116 | */ |
| 117 | |
| 118 | typedef struct { unsigned long pgprot; } pgprot_t; |
| 119 | typedef struct { unsigned long pte; } pte_t; |
| 120 | |
| 121 | #define pte_val(x) ((x).pte) |
| 122 | #define pgprot_val(x) ((x).pgprot) |
| 123 | |
| 124 | #ifndef __s390x__ |
| 125 | |
| 126 | typedef struct { unsigned long pmd; } pmd_t; |
| 127 | typedef struct { |
| 128 | unsigned long pgd0; |
| 129 | unsigned long pgd1; |
| 130 | unsigned long pgd2; |
| 131 | unsigned long pgd3; |
| 132 | } pgd_t; |
| 133 | |
| 134 | #define pmd_val(x) ((x).pmd) |
| 135 | #define pgd_val(x) ((x).pgd0) |
| 136 | |
| 137 | #else /* __s390x__ */ |
| 138 | |
| 139 | typedef struct { |
| 140 | unsigned long pmd0; |
| 141 | unsigned long pmd1; |
| 142 | } pmd_t; |
| 143 | typedef struct { unsigned long pgd; } pgd_t; |
| 144 | |
| 145 | #define pmd_val(x) ((x).pmd0) |
| 146 | #define pmd_val1(x) ((x).pmd1) |
| 147 | #define pgd_val(x) ((x).pgd) |
| 148 | |
| 149 | #endif /* __s390x__ */ |
| 150 | |
| 151 | #define __pte(x) ((pte_t) { (x) } ) |
| 152 | #define __pmd(x) ((pmd_t) { (x) } ) |
| 153 | #define __pgd(x) ((pgd_t) { (x) } ) |
| 154 | #define __pgprot(x) ((pgprot_t) { (x) } ) |
| 155 | |
| 156 | /* default storage key used for all pages */ |
| 157 | extern unsigned int default_storage_key; |
| 158 | |
| 159 | static inline void |
| 160 | page_set_storage_key(unsigned long addr, unsigned int skey) |
| 161 | { |
| 162 | asm volatile ( "sske %0,%1" : : "d" (skey), "a" (addr) ); |
| 163 | } |
| 164 | |
| 165 | static inline unsigned int |
| 166 | page_get_storage_key(unsigned long addr) |
| 167 | { |
| 168 | unsigned int skey; |
| 169 | |
| 170 | asm volatile ( "iske %0,%1" : "=d" (skey) : "a" (addr), "0" (0) ); |
| 171 | |
| 172 | return skey; |
| 173 | } |
| 174 | |
| 175 | #endif /* !__ASSEMBLY__ */ |
| 176 | |
| 177 | /* to align the pointer to the (next) page boundary */ |
| 178 | #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) |
| 179 | |
| 180 | #define __PAGE_OFFSET 0x0UL |
| 181 | #define PAGE_OFFSET 0x0UL |
| 182 | #define __pa(x) (unsigned long)(x) |
| 183 | #define __va(x) (void *)(unsigned long)(x) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) |
| 185 | |
| 186 | #define pfn_valid(pfn) ((pfn) < max_mapnr) |
| 187 | #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) |
| 188 | |
| 189 | #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ |
| 190 | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) |
| 191 | |
| 192 | #endif /* __KERNEL__ */ |
| 193 | |
KAMEZAWA Hiroyuki | aed6304 | 2006-03-27 01:15:45 -0800 | [diff] [blame^] | 194 | #include <asm-generic/memory_model.h> |
Stephen Rothwell | fd4fd5a | 2005-09-03 15:54:30 -0700 | [diff] [blame] | 195 | #include <asm-generic/page.h> |
| 196 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | #endif /* _S390_PAGE_H */ |