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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 | /* $Id: page.h,v 1.43 1998/05/11 08:40:11 davem Exp $ * page.h: Various defines and such for MMU operations on the Sparc for * the Linux kernel. * * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) */ #ifndef _SPARC_PAGE_H #define _SPARC_PAGE_H #include <linux/config.h> #ifdef CONFIG_SUN4 #define PAGE_SHIFT 13 #else #define PAGE_SHIFT 12 #endif #define PAGE_SIZE (1 << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE-1)) #ifdef __KERNEL__ #include <linux/config.h> #include <asm/head.h> /* for KERNBASE */ #include <asm/btfixup.h> /* This is always 2048*sizeof(long), doesn't change with PAGE_SIZE */ #define TASK_UNION_SIZE 8192 #ifndef __ASSEMBLY__ #define BUG() do { printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); *(int *)0=0; } while (0) #define PAGE_BUG(page) do { \ BUG(); } while (0) #define clear_page(page) memset((void *)(page), 0, PAGE_SIZE) #define copy_page(to,from) memcpy((void *)(to), (void *)(from), PAGE_SIZE) extern unsigned long page_offset; BTFIXUPDEF_SETHI_INIT(page_offset,0xf0000000) #ifdef MODULE #define PAGE_OFFSET (page_offset) #else #define PAGE_OFFSET BTFIXUP_SETHI(page_offset) #endif /* translate between physical and virtual addresses */ BTFIXUPDEF_CALL_CONST(unsigned long, mmu_v2p, unsigned long) BTFIXUPDEF_CALL_CONST(unsigned long, mmu_p2v, unsigned long) #define mmu_v2p(vaddr) BTFIXUP_CALL(mmu_v2p)(vaddr) #define mmu_p2v(paddr) BTFIXUP_CALL(mmu_p2v)(paddr) #define __pa(x) (mmu_v2p((unsigned long)(x))) #define __va(x) ((void *)(mmu_p2v((unsigned long)(x)))) /* The following structure is used to hold the physical * memory configuration of the machine. This is filled in * probe_memory() and is later used by mem_init() to set up * mem_map[]. We statically allocate SPARC_PHYS_BANKS of * these structs, this is arbitrary. The entry after the * last valid one has num_bytes==0. */ struct sparc_phys_banks { unsigned long base_addr; unsigned long num_bytes; }; #define SPARC_PHYS_BANKS 32 extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS]; /* Cache alias structure. Entry is valid if context != -1. */ struct cache_palias { unsigned long vaddr; int context; }; extern struct cache_palias *sparc_aliases; /* passing structs on the Sparc slow us down tremendously... */ /* #define STRICT_MM_TYPECHECKS */ #ifdef STRICT_MM_TYPECHECKS /* * These are used to make use of C type-checking.. */ typedef struct { unsigned long pte; } pte_t; typedef struct { unsigned long iopte; } iopte_t; typedef struct { unsigned long pmd; } pmd_t; typedef struct { unsigned long pgd; } pgd_t; typedef struct { unsigned long ctxd; } ctxd_t; typedef struct { unsigned long pgprot; } pgprot_t; typedef struct { unsigned long iopgprot; } iopgprot_t; #define pte_val(x) ((x).pte) #define iopte_val(x) ((x).iopte) #define pmd_val(x) ((x).pmd) #define pgd_val(x) ((x).pgd) #define ctxd_val(x) ((x).ctxd) #define pgprot_val(x) ((x).pgprot) #define iopgprot_val(x) ((x).iopgprot) #define __pte(x) ((pte_t) { (x) } ) #define __iopte(x) ((iopte_t) { (x) } ) #define __pmd(x) ((pmd_t) { (x) } ) #define __pgd(x) ((pgd_t) { (x) } ) #define __ctxd(x) ((ctxd_t) { (x) } ) #define __pgprot(x) ((pgprot_t) { (x) } ) #define __iopgprot(x) ((iopgprot_t) { (x) } ) #elif CONFIG_AP1000_DEBUG typedef struct { unsigned long pte; } pte_t; typedef struct { unsigned long iopte; } iopte_t; typedef struct { unsigned long pmd; } pmd_t; typedef struct { unsigned long pgd; } pgd_t; typedef struct { unsigned long ctxd; } ctxd_t; typedef struct { unsigned long pgprot; } pgprot_t; typedef struct { unsigned long iopgprot; } iopgprot_t; static inline unsigned long __get_val(unsigned long x) { if ((x & 0xF0000000) == (8<<28)) return x & 0x0FFFFFFF; return x; } static inline unsigned long __set_val(unsigned long x) { if ((x & 0xF0000000) == (0<<28)) return x | 0x80000000; return x; } #define __pte_val(x) ((x).pte) #define __iopte_val(x) ((x).iopte) #define __pmd_val(x) ((x).pmd) #define __pgd_val(x) ((x).pgd) #define __ctxd_val(x) ((x).ctxd) #define __pgprot_val(x) ((x).pgprot) #define __iopgprot_val(x) ((x).iopgprot) #define ___pte(x) ((pte_t) { (x) } ) #define ___iopte(x) ((iopte_t) { (x) } ) #define ___pmd(x) ((pmd_t) { (x) } ) #define ___pgd(x) ((pgd_t) { (x) } ) #define ___ctxd(x) ((ctxd_t) { (x) } ) #define ___pgprot(x) ((pgprot_t) { (x) } ) #define ___iopgprot(x) ((iopgprot_t) { (x) } ) #define pte_val(x) __get_val(__pte_val(x)) #define iopte_val(x) __get_val(__iopte_val(x)) #define pmd_val(x) __get_val(__pmd_val(x)) #define pgd_val(x) __get_val(__pgd_val(x)) #define ctxd_val(x) __get_val(__ctxd_val(x)) #define pgprot_val(x) __get_val(__pgprot_val(x)) #define iopgprot_val(x) __get_val(__iopgprot_val(x)) #define __pte(x) ___pte(__set_val(x)) #define __iopte(x) ___iopte(__set_val(x)) #define __pmd(x) ___pmd(__set_val(x)) #define __pgd(x) ___pgd(__set_val(x)) #define __ctxd(x) ___ctxd(__set_val(x)) #define __pgprot(x) ___pgprot(x) #define __iopgprot(x) ___iopgprot(__set_val(x)) #elif CONFIG_AP1000 typedef unsigned long pte_t; typedef unsigned long iopte_t; typedef unsigned long pmd_t; typedef unsigned long pgd_t; typedef unsigned long ctxd_t; typedef unsigned long pgprot_t; typedef unsigned long iopgprot_t; static inline unsigned long __get_val(unsigned long x) { #if 0 extern void ap_panic(char *fmt,...); if (x && (x & 0xF0000000) == 0) { ap_panic("get_val got 0x%x\n",x); } #endif if ((x & 0xF0000000) == (8<<28)) return x & 0x0FFFFFFF; return x; } static inline unsigned long __set_val(unsigned long x) { #if 0 extern void ap_panic(char *fmt,...); if ((x & 0xF0000000) == (8<<28)) { ap_panic("set_val got 0x%x\n",x); } #endif if ((x & 0xF0000000) == (0<<28)) return x | 0x80000000; return x; } #define __pte_val(x) (x) #define __iopte_val(x) (x) #define __pmd_val(x) (x) #define __pgd_val(x) (x) #define __ctxd_val(x) (x) #define __pgprot_val(x) (x) #define __iopgprot_val(x) (x) #define ___pte(x) ((pte_t) { (x) } ) #define ___iopte(x) ((iopte_t) { (x) } ) #define ___pmd(x) ((pmd_t) { (x) } ) #define ___pgd(x) ((pgd_t) { (x) } ) #define ___ctxd(x) ((ctxd_t) { (x) } ) #define ___pgprot(x) ((pgprot_t) { (x) } ) #define ___iopgprot(x) ((iopgprot_t) { (x) } ) #define pte_val(x) __get_val(__pte_val(x)) #define iopte_val(x) __get_val(__iopte_val(x)) #define pmd_val(x) __get_val(__pmd_val(x)) #define pgd_val(x) __get_val(__pgd_val(x)) #define ctxd_val(x) __get_val(__ctxd_val(x)) #define pgprot_val(x) __get_val(__pgprot_val(x)) #define iopgprot_val(x) __get_val(__iopgprot_val(x)) #define __pte(x) ___pte(__set_val(x)) #define __iopte(x) ___iopte(__set_val(x)) #define __pmd(x) ___pmd(__set_val(x)) #define __pgd(x) ___pgd(__set_val(x)) #define __ctxd(x) ___ctxd(__set_val(x)) #define __pgprot(x) ___pgprot(x) #define __iopgprot(x) ___iopgprot(__set_val(x)) #else /* * .. while these make it easier on the compiler */ typedef unsigned long pte_t; typedef unsigned long iopte_t; typedef unsigned long pmd_t; typedef unsigned long pgd_t; typedef unsigned long ctxd_t; typedef unsigned long pgprot_t; typedef unsigned long iopgprot_t; #define pte_val(x) (x) #define iopte_val(x) (x) #define pmd_val(x) (x) #define pgd_val(x) (x) #define ctxd_val(x) (x) #define pgprot_val(x) (x) #define iopgprot_val(x) (x) #define __pte(x) (x) #define __iopte(x) (x) #define __pmd(x) (x) #define __pgd(x) (x) #define __ctxd(x) (x) #define __pgprot(x) (x) #define __iopgprot(x) (x) #endif extern unsigned long sparc_unmapped_base; BTFIXUPDEF_SETHI(sparc_unmapped_base) #define TASK_UNMAPPED_BASE BTFIXUP_SETHI(sparc_unmapped_base) /* to align the pointer to the (next) page boundary */ #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) /* Now, to allow for very large physical memory configurations we * place the page pool both above the kernel and below the kernel. */ #define MAP_NR(addr) ((((unsigned long) (addr)) - PAGE_OFFSET) >> PAGE_SHIFT) #else /* !(__ASSEMBLY__) */ #define __pgprot(x) (x) #endif /* !(__ASSEMBLY__) */ #endif /* __KERNEL__ */ #endif /* _SPARC_PAGE_H */ |