include/asm-sparc/pgtable.h

   1 /* $Id: pgtable.h,v 1.81 1999/06/27 00:38:28 davem Exp $ */
   2 #ifndef _SPARC_PGTABLE_H
   3 #define _SPARC_PGTABLE_H
   4
   5 /*  asm-sparc/pgtable.h:  Defines and functions used to work
   6  *                        with Sparc page tables.
   7  *
   8  *  Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
   9  *  Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
  10  */
  11
  12 #include <linux/mm.h>
  13 #include <linux/config.h>
  14 #include <linux/spinlock.h>
  15 #include <asm/asi.h>
  16 #ifdef CONFIG_SUN4
  17 #include <asm/pgtsun4.h>
  18 #else
  19 #include <asm/pgtsun4c.h>
  20 #endif
  21 #include <asm/pgtsrmmu.h>
  22 #include <asm/vac-ops.h>
  23 #include <asm/oplib.h>
  24 #include <asm/sbus.h>
  25 #include <asm/btfixup.h>
  26
  27 extern void load_mmu(void);
  28 extern int io_remap_page_range(unsigned long from, unsigned long to,
  29                                unsigned long size, pgprot_t prot, int space);
  30
  31 BTFIXUPDEF_CALL(void, quick_kernel_fault, unsigned long)
  32
  33 #define quick_kernel_fault(addr) BTFIXUP_CALL(quick_kernel_fault)(addr)
  34
  35 /* Allocate a block of RAM which is aligned to its size.
  36    This procedure can be used until the call to mem_init(). */
  37 extern void *sparc_init_alloc(unsigned long *kbrk, unsigned long size);
  38
  39 /* Routines for data transfer buffers. */
  40 BTFIXUPDEF_CALL(char *, mmu_lockarea, char *, unsigned long)
  41 BTFIXUPDEF_CALL(void,   mmu_unlockarea, char *, unsigned long)
  42
  43 #define mmu_lockarea(vaddr,len) BTFIXUP_CALL(mmu_lockarea)(vaddr,len)
  44 #define mmu_unlockarea(vaddr,len) BTFIXUP_CALL(mmu_unlockarea)(vaddr,len)
  45
  46 /* Routines for getting a dvma scsi buffer. */
  47 struct mmu_sglist {
  48         char *addr;
  49         char *__dont_touch;
  50         unsigned int len;
  51         __u32 dvma_addr;
  52 };
  53 BTFIXUPDEF_CALL(__u32, mmu_get_scsi_one, char *, unsigned long, struct linux_sbus *sbus)
  54 BTFIXUPDEF_CALL(void,  mmu_get_scsi_sgl, struct mmu_sglist *, int, struct linux_sbus *sbus)
  55 BTFIXUPDEF_CALL(void,  mmu_release_scsi_one, __u32, unsigned long, struct linux_sbus *sbus)
  56 BTFIXUPDEF_CALL(void,  mmu_release_scsi_sgl, struct mmu_sglist *, int, struct linux_sbus *sbus)
  57 BTFIXUPDEF_CALL(void,  mmu_map_dma_area, unsigned long addr, int len)
  58
  59 #define mmu_get_scsi_one(vaddr,len,sbus) BTFIXUP_CALL(mmu_get_scsi_one)(vaddr,len,sbus)
  60 #define mmu_get_scsi_sgl(sg,sz,sbus) BTFIXUP_CALL(mmu_get_scsi_sgl)(sg,sz,sbus)
  61 #define mmu_release_scsi_one(vaddr,len,sbus) BTFIXUP_CALL(mmu_release_scsi_one)(vaddr,len,sbus)
  62 #define mmu_release_scsi_sgl(sg,sz,sbus) BTFIXUP_CALL(mmu_release_scsi_sgl)(sg,sz,sbus)
  63
  64 #define mmu_map_dma_area(addr,len) BTFIXUP_CALL(mmu_map_dma_area)(addr,len)
  65
  66 BTFIXUPDEF_SIMM13(pmd_shift)
  67 BTFIXUPDEF_SETHI(pmd_size)
  68 BTFIXUPDEF_SETHI(pmd_mask)
  69
  70 extern unsigned int pmd_align(unsigned int addr) __attribute__((const));
  71 extern __inline__ unsigned int pmd_align(unsigned int addr)
  72 {
  73         return ((addr + ~BTFIXUP_SETHI(pmd_mask)) & BTFIXUP_SETHI(pmd_mask));
  74 }
  75
  76 BTFIXUPDEF_SIMM13(pgdir_shift)
  77 BTFIXUPDEF_SETHI(pgdir_size)
  78 BTFIXUPDEF_SETHI(pgdir_mask)
  79
  80 extern unsigned int pgdir_align(unsigned int addr) __attribute__((const));
  81 extern __inline__ unsigned int pgdir_align(unsigned int addr)
  82 {
  83         return ((addr + ~BTFIXUP_SETHI(pgdir_mask)) & BTFIXUP_SETHI(pgdir_mask));
  84 }
  85
  86 BTFIXUPDEF_SIMM13(ptrs_per_pte)
  87 BTFIXUPDEF_SIMM13(ptrs_per_pmd)
  88 BTFIXUPDEF_SIMM13(ptrs_per_pgd)
  89 BTFIXUPDEF_SIMM13(user_ptrs_per_pgd)
  90
  91 #define VMALLOC_VMADDR(x) ((unsigned long)(x))
  92 /* This is the same accross all platforms */
  93 #define VMALLOC_START (0xfe300000)
  94 #define VMALLOC_END   ~0x0UL
  95
  96 BTFIXUPDEF_INT(page_none)
  97 BTFIXUPDEF_INT(page_shared)
  98 BTFIXUPDEF_INT(page_copy)
  99 BTFIXUPDEF_INT(page_readonly)
 100 BTFIXUPDEF_INT(page_kernel)
 101
 102 #define PMD_SHIFT               BTFIXUP_SIMM13(pmd_shift)
 103 #define PMD_SIZE                BTFIXUP_SETHI(pmd_size)
 104 #define PMD_MASK                BTFIXUP_SETHI(pmd_mask)
 105 #define PMD_ALIGN(addr)         pmd_align(addr)
 106 #define PGDIR_SHIFT             BTFIXUP_SIMM13(pgdir_shift)
 107 #define PGDIR_SIZE              BTFIXUP_SETHI(pgdir_size)
 108 #define PGDIR_MASK              BTFIXUP_SETHI(pgdir_mask)
 109 #define PGDIR_ALIGN             pgdir_align(addr)
 110 #define PTRS_PER_PTE            BTFIXUP_SIMM13(ptrs_per_pte)
 111 #define PTRS_PER_PMD            BTFIXUP_SIMM13(ptrs_per_pmd)
 112 #define PTRS_PER_PGD            BTFIXUP_SIMM13(ptrs_per_pgd)
 113 #define USER_PTRS_PER_PGD       BTFIXUP_SIMM13(user_ptrs_per_pgd)
 114
 115 #define PAGE_NONE      __pgprot(BTFIXUP_INT(page_none))
 116 #define PAGE_SHARED    __pgprot(BTFIXUP_INT(page_shared))
 117 #define PAGE_COPY      __pgprot(BTFIXUP_INT(page_copy))
 118 #define PAGE_READONLY  __pgprot(BTFIXUP_INT(page_readonly))
 119 #define PAGE_KERNEL    __pgprot(BTFIXUP_INT(page_kernel))
 120
 121 BTFIXUPDEF_CALL(void, set_pgdir, unsigned long, pgd_t)
 122
 123 #define set_pgdir(address,entry) BTFIXUP_CALL(set_pgdir)(address,entry)
 124
 125 /* Top-level page directory */
 126 extern pgd_t swapper_pg_dir[1024];
 127
 128 /* Page table for 0-4MB for everybody, on the Sparc this
 129  * holds the same as on the i386.
 130  */
 131 extern pte_t pg0[1024];
 132 extern pte_t pg1[1024];
 133 extern pte_t pg2[1024];
 134 extern pte_t pg3[1024];
 135
 136 extern unsigned long ptr_in_current_pgd;
 137
 138 /* the no. of pointers that fit on a page: this will go away */
 139 #define PTRS_PER_PAGE   (PAGE_SIZE/sizeof(void*))
 140
 141 /* Here is a trick, since mmap.c need the initializer elements for
 142  * protection_map[] to be constant at compile time, I set the following
 143  * to all zeros.  I set it to the real values after I link in the
 144  * appropriate MMU page table routines at boot time.
 145  */
 146 #define __P000  __pgprot(0)
 147 #define __P001  __pgprot(0)
 148 #define __P010  __pgprot(0)
 149 #define __P011  __pgprot(0)
 150 #define __P100  __pgprot(0)
 151 #define __P101  __pgprot(0)
 152 #define __P110  __pgprot(0)
 153 #define __P111  __pgprot(0)
 154
 155 #define __S000  __pgprot(0)
 156 #define __S001  __pgprot(0)
 157 #define __S010  __pgprot(0)
 158 #define __S011  __pgprot(0)
 159 #define __S100  __pgprot(0)
 160 #define __S101  __pgprot(0)
 161 #define __S110  __pgprot(0)
 162 #define __S111  __pgprot(0)
 163
 164 extern int num_contexts;
 165
 166 /*
 167  * BAD_PAGETABLE is used when we need a bogus page-table, while
 168  * BAD_PAGE is used for a bogus page.
 169  *
 170  * ZERO_PAGE is a global shared page that is always zero: used
 171  * for zero-mapped memory areas etc..
 172  */
 173 extern pte_t __bad_page(void);
 174 extern pte_t * __bad_pagetable(void);
 175
 176 extern unsigned long empty_zero_page;
 177
 178 #define BAD_PAGETABLE __bad_pagetable()
 179 #define BAD_PAGE __bad_page()
 180 #define ZERO_PAGE(vaddr) ((unsigned long)(&(empty_zero_page)))
 181
 182 /* number of bits that fit into a memory pointer */
 183 #define BITS_PER_PTR      (8*sizeof(unsigned long))
 184
 185 /* to align the pointer to a pointer address */
 186 #define PTR_MASK          (~(sizeof(void*)-1))
 187
 188 #define SIZEOF_PTR_LOG2   2
 189
 190 BTFIXUPDEF_CALL_CONST(unsigned long, pte_page, pte_t)
 191 BTFIXUPDEF_CALL_CONST(unsigned long, pmd_page, pmd_t)
 192 BTFIXUPDEF_CALL_CONST(unsigned long, pgd_page, pgd_t)
 193
 194 #define pte_page(pte) BTFIXUP_CALL(pte_page)(pte)
 195 #define pmd_page(pmd) BTFIXUP_CALL(pmd_page)(pmd)
 196 #define pgd_page(pgd) BTFIXUP_CALL(pgd_page)(pgd)
 197
 198 BTFIXUPDEF_CALL(void, sparc_update_rootmmu_dir, struct task_struct *, pgd_t *pgdir)
 199
 200 #define SET_PAGE_DIR(tsk,pgdir) BTFIXUP_CALL(sparc_update_rootmmu_dir)(tsk, pgdir)
 201
 202 /* to find an entry in a page-table */
 203 #define PAGE_PTR(address) \
 204 ((unsigned long)(address)>>(PAGE_SHIFT-SIZEOF_PTR_LOG2)&PTR_MASK&~PAGE_MASK)
 205
 206 BTFIXUPDEF_SETHI(none_mask)
 207 BTFIXUPDEF_CALL_CONST(int, pte_present, pte_t)
 208 BTFIXUPDEF_CALL(void, pte_clear, pte_t *)
 209
 210 extern __inline__ int pte_none(pte_t pte)
 211 {
 212         return !(pte_val(pte) & ~BTFIXUP_SETHI(none_mask));
 213 }
 214
 215 #define pte_present(pte) BTFIXUP_CALL(pte_present)(pte)
 216 #define pte_clear(pte) BTFIXUP_CALL(pte_clear)(pte)
 217
 218 BTFIXUPDEF_CALL_CONST(int, pmd_bad, pmd_t)
 219 BTFIXUPDEF_CALL_CONST(int, pmd_present, pmd_t)
 220 BTFIXUPDEF_CALL(void, pmd_clear, pmd_t *)
 221
 222 extern __inline__ int pmd_none(pmd_t pmd)
 223 {
 224         return !(pmd_val(pmd) & ~BTFIXUP_SETHI(none_mask));
 225 }
 226
 227 #define pmd_bad(pmd) BTFIXUP_CALL(pmd_bad)(pmd)
 228 #define pmd_present(pmd) BTFIXUP_CALL(pmd_present)(pmd)
 229 #define pmd_clear(pmd) BTFIXUP_CALL(pmd_clear)(pmd)
 230
 231 BTFIXUPDEF_CALL_CONST(int, pgd_none, pgd_t)
 232 BTFIXUPDEF_CALL_CONST(int, pgd_bad, pgd_t)
 233 BTFIXUPDEF_CALL_CONST(int, pgd_present, pgd_t)
 234 BTFIXUPDEF_CALL(void, pgd_clear, pgd_t *)
 235
 236 #define pgd_none(pgd) BTFIXUP_CALL(pgd_none)(pgd)
 237 #define pgd_bad(pgd) BTFIXUP_CALL(pgd_bad)(pgd)
 238 #define pgd_present(pgd) BTFIXUP_CALL(pgd_present)(pgd)
 239 #define pgd_clear(pgd) BTFIXUP_CALL(pgd_clear)(pgd)
 240
 241 /*
 242  * The following only work if pte_present() is true.
 243  * Undefined behaviour if not..
 244  */
 245 BTFIXUPDEF_HALF(pte_writei)
 246 BTFIXUPDEF_HALF(pte_dirtyi)
 247 BTFIXUPDEF_HALF(pte_youngi)
 248
 249 extern int pte_write(pte_t pte) __attribute__((const));
 250 extern __inline__ int pte_write(pte_t pte)
 251 {
 252         return pte_val(pte) & BTFIXUP_HALF(pte_writei);
 253 }
 254
 255 extern int pte_dirty(pte_t pte) __attribute__((const));
 256 extern __inline__ int pte_dirty(pte_t pte)
 257 {
 258         return pte_val(pte) & BTFIXUP_HALF(pte_dirtyi);
 259 }
 260
 261 extern int pte_young(pte_t pte) __attribute__((const));
 262 extern __inline__ int pte_young(pte_t pte)
 263 {
 264         return pte_val(pte) & BTFIXUP_HALF(pte_youngi);
 265 }
 266
 267 BTFIXUPDEF_HALF(pte_wrprotecti)
 268 BTFIXUPDEF_HALF(pte_mkcleani)
 269 BTFIXUPDEF_HALF(pte_mkoldi)
 270
 271 extern pte_t pte_wrprotect(pte_t pte) __attribute__((const));
 272 extern __inline__ pte_t pte_wrprotect(pte_t pte)
 273 {
 274         return __pte(pte_val(pte) & ~BTFIXUP_HALF(pte_wrprotecti));
 275 }
 276
 277 extern pte_t pte_mkclean(pte_t pte) __attribute__((const));
 278 extern __inline__ pte_t pte_mkclean(pte_t pte)
 279 {
 280         return __pte(pte_val(pte) & ~BTFIXUP_HALF(pte_mkcleani));
 281 }
 282
 283 extern pte_t pte_mkold(pte_t pte) __attribute__((const));
 284 extern __inline__ pte_t pte_mkold(pte_t pte)
 285 {
 286         return __pte(pte_val(pte) & ~BTFIXUP_HALF(pte_mkoldi));
 287 }
 288
 289 BTFIXUPDEF_CALL_CONST(pte_t, pte_mkwrite, pte_t)
 290 BTFIXUPDEF_CALL_CONST(pte_t, pte_mkdirty, pte_t)
 291 BTFIXUPDEF_CALL_CONST(pte_t, pte_mkyoung, pte_t)
 292
 293 #define pte_mkwrite(pte) BTFIXUP_CALL(pte_mkwrite)(pte)
 294 #define pte_mkdirty(pte) BTFIXUP_CALL(pte_mkdirty)(pte)
 295 #define pte_mkyoung(pte) BTFIXUP_CALL(pte_mkyoung)(pte)
 296
 297 /*
 298  * Conversion functions: convert a page and protection to a page entry,
 299  * and a page entry and page directory to the page they refer to.
 300  */
 301 BTFIXUPDEF_CALL_CONST(pte_t, mk_pte, unsigned long, pgprot_t)
 302 BTFIXUPDEF_CALL_CONST(pte_t, mk_pte_phys, unsigned long, pgprot_t)
 303 BTFIXUPDEF_CALL_CONST(pte_t, mk_pte_io, unsigned long, pgprot_t, int)
 304
 305 #define mk_pte(page,pgprot) BTFIXUP_CALL(mk_pte)(page,pgprot)
 306 #define mk_pte_phys(page,pgprot) BTFIXUP_CALL(mk_pte_phys)(page,pgprot)
 307 #define mk_pte_io(page,pgprot,space) BTFIXUP_CALL(mk_pte_io)(page,pgprot,space)
 308
 309 BTFIXUPDEF_CALL(void, pgd_set, pgd_t *, pmd_t *)
 310
 311 #define pgd_set(pgdp,pmdp) BTFIXUP_CALL(pgd_set)(pgdp,pmdp)
 312
 313 BTFIXUPDEF_INT(pte_modify_mask)
 314
 315 extern pte_t pte_modify(pte_t pte, pgprot_t newprot) __attribute__((const));
 316 extern __inline__ pte_t pte_modify(pte_t pte, pgprot_t newprot)
 317 {
 318         return __pte((pte_val(pte) & BTFIXUP_INT(pte_modify_mask)) |
 319                 pgprot_val(newprot));
 320 }
 321
 322 BTFIXUPDEF_CALL(pgd_t *, pgd_offset, struct mm_struct *, unsigned long)
 323 BTFIXUPDEF_CALL(pmd_t *, pmd_offset, pgd_t *, unsigned long)
 324 BTFIXUPDEF_CALL(pte_t *, pte_offset, pmd_t *, unsigned long)
 325
 326 /* to find an entry in a kernel page-table-directory */
 327 #define pgd_offset_k(address) pgd_offset(&init_mm, address)
 328
 329 /* to find an entry in a page-table-directory */
 330 #define pgd_offset(mm,addr) BTFIXUP_CALL(pgd_offset)(mm,addr)
 331
 332 /* Find an entry in the second-level page table.. */
 333 #define pmd_offset(dir,addr) BTFIXUP_CALL(pmd_offset)(dir,addr)
 334
 335 /* Find an entry in the third-level page table.. */
 336 #define pte_offset(dir,addr) BTFIXUP_CALL(pte_offset)(dir,addr)
 337
 338 extern struct pgtable_cache_struct {
 339         unsigned long *pgd_cache;
 340         unsigned long *pte_cache;
 341         unsigned long pgtable_cache_sz;
 342         unsigned long pgd_cache_sz;
 343         spinlock_t pgd_spinlock;
 344         spinlock_t pte_spinlock;
 345 } pgt_quicklists;
 346 #define pgd_quicklist           (pgt_quicklists.pgd_cache)
 347 #define pmd_quicklist           ((unsigned long *)0)
 348 #define pte_quicklist           (pgt_quicklists.pte_cache)
 349 #define pgd_spinlock            (pgt_quicklists.pgd_spinlock)
 350 #define pte_spinlock            (pgt_quicklists.pte_spinlock)
 351 #define pgtable_cache_size      (pgt_quicklists.pgtable_cache_sz)
 352 #define pgd_cache_size          (pgt_quicklists.pgd_cache_sz)
 353
 354 BTFIXUPDEF_CALL(pte_t *, get_pte_fast, void)
 355 BTFIXUPDEF_CALL(pgd_t *, get_pgd_fast, void)
 356 BTFIXUPDEF_CALL(void,    free_pte_slow, pte_t *)
 357 BTFIXUPDEF_CALL(void,    free_pgd_slow, pgd_t *)
 358 BTFIXUPDEF_CALL(int,     do_check_pgt_cache, int, int)
 359
 360 #define get_pte_fast() BTFIXUP_CALL(get_pte_fast)()
 361 extern __inline__ pmd_t *get_pmd_fast(void)
 362 {
 363         return (pmd_t *)0;
 364 }
 365 #define get_pgd_fast() BTFIXUP_CALL(get_pgd_fast)()
 366 #define free_pte_slow(pte) BTFIXUP_CALL(free_pte_slow)(pte)
 367 extern __inline__ void free_pmd_slow(pmd_t *pmd)
 368 {
 369 }
 370 #define free_pgd_slow(pgd) BTFIXUP_CALL(free_pgd_slow)(pgd)
 371 #define do_check_pgt_cache(low,high) BTFIXUP_CALL(do_check_pgt_cache)(low,high)
 372
 373 /*
 374  * Allocate and free page tables. The xxx_kernel() versions are
 375  * used to allocate a kernel page table - this turns on ASN bits
 376  * if any, and marks the page tables reserved.
 377  */
 378 BTFIXUPDEF_CALL(void,    pte_free_kernel, pte_t *)
 379 BTFIXUPDEF_CALL(pte_t *, pte_alloc_kernel, pmd_t *, unsigned long)
 380
 381 #define pte_free_kernel(pte) BTFIXUP_CALL(pte_free_kernel)(pte)
 382 #define pte_alloc_kernel(pmd,addr) BTFIXUP_CALL(pte_alloc_kernel)(pmd,addr)
 383
 384 BTFIXUPDEF_CALL(void,    pmd_free_kernel, pmd_t *)
 385 BTFIXUPDEF_CALL(pmd_t *, pmd_alloc_kernel, pgd_t *, unsigned long)
 386
 387 #define pmd_free_kernel(pmd) BTFIXUP_CALL(pmd_free_kernel)(pmd)
 388 #define pmd_alloc_kernel(pgd,addr) BTFIXUP_CALL(pmd_alloc_kernel)(pgd,addr)
 389
 390 BTFIXUPDEF_CALL(void,    pte_free, pte_t *)
 391 BTFIXUPDEF_CALL(pte_t *, pte_alloc, pmd_t *, unsigned long)
 392
 393 #define pte_free(pte) BTFIXUP_CALL(pte_free)(pte)
 394 #define pte_alloc(pmd,addr) BTFIXUP_CALL(pte_alloc)(pmd,addr)
 395
 396 BTFIXUPDEF_CALL(void,    pmd_free, pmd_t *)
 397 BTFIXUPDEF_CALL(pmd_t *, pmd_alloc, pgd_t *, unsigned long)
 398
 399 #define pmd_free(pmd) BTFIXUP_CALL(pmd_free)(pmd)
 400 #define pmd_alloc(pgd,addr) BTFIXUP_CALL(pmd_alloc)(pgd,addr)
 401
 402 BTFIXUPDEF_CALL(void,    pgd_free, pgd_t *)
 403 BTFIXUPDEF_CALL(pgd_t *, pgd_alloc, void)
 404
 405 #define pgd_free(pgd) BTFIXUP_CALL(pgd_free)(pgd)
 406 #define pgd_alloc() BTFIXUP_CALL(pgd_alloc)()
 407
 408 /* Fine grained cache/tlb flushing. */
 409
 410 #ifdef __SMP__
 411 BTFIXUPDEF_CALL(void, local_flush_cache_all, void)
 412 BTFIXUPDEF_CALL(void, local_flush_cache_mm, struct mm_struct *)
 413 BTFIXUPDEF_CALL(void, local_flush_cache_range, struct mm_struct *, unsigned long, unsigned long)
 414 BTFIXUPDEF_CALL(void, local_flush_cache_page, struct vm_area_struct *, unsigned long)
 415
 416 #define local_flush_cache_all() BTFIXUP_CALL(local_flush_cache_all)()
 417 #define local_flush_cache_mm(mm) BTFIXUP_CALL(local_flush_cache_mm)(mm)
 418 #define local_flush_cache_range(mm,start,end) BTFIXUP_CALL(local_flush_cache_range)(mm,start,end)
 419 #define local_flush_cache_page(vma,addr) BTFIXUP_CALL(local_flush_cache_page)(vma,addr)
 420
 421 BTFIXUPDEF_CALL(void, local_flush_tlb_all, void)
 422 BTFIXUPDEF_CALL(void, local_flush_tlb_mm, struct mm_struct *)
 423 BTFIXUPDEF_CALL(void, local_flush_tlb_range, struct mm_struct *, unsigned long, unsigned long)
 424 BTFIXUPDEF_CALL(void, local_flush_tlb_page, struct vm_area_struct *, unsigned long)
 425
 426 #define local_flush_tlb_all() BTFIXUP_CALL(local_flush_tlb_all)()
 427 #define local_flush_tlb_mm(mm) BTFIXUP_CALL(local_flush_tlb_mm)(mm)
 428 #define local_flush_tlb_range(mm,start,end) BTFIXUP_CALL(local_flush_tlb_range)(mm,start,end)
 429 #define local_flush_tlb_page(vma,addr) BTFIXUP_CALL(local_flush_tlb_page)(vma,addr)
 430
 431 BTFIXUPDEF_CALL(void, local_flush_page_to_ram, unsigned long)
 432 BTFIXUPDEF_CALL(void, local_flush_sig_insns, struct mm_struct *, unsigned long)
 433
 434 #define local_flush_page_to_ram(addr) BTFIXUP_CALL(local_flush_page_to_ram)(addr)
 435 #define local_flush_sig_insns(mm,insn_addr) BTFIXUP_CALL(local_flush_sig_insns)(mm,insn_addr)
 436
 437 extern void smp_flush_cache_all(void);
 438 extern void smp_flush_cache_mm(struct mm_struct *mm);
 439 extern void smp_flush_cache_range(struct mm_struct *mm,
 440                                   unsigned long start,
 441                                   unsigned long end);
 442 extern void smp_flush_cache_page(struct vm_area_struct *vma, unsigned long page);
 443
 444 extern void smp_flush_tlb_all(void);
 445 extern void smp_flush_tlb_mm(struct mm_struct *mm);
 446 extern void smp_flush_tlb_range(struct mm_struct *mm,
 447                                   unsigned long start,
 448                                   unsigned long end);
 449 extern void smp_flush_tlb_page(struct vm_area_struct *mm, unsigned long page);
 450 extern void smp_flush_page_to_ram(unsigned long page);
 451 extern void smp_flush_sig_insns(struct mm_struct *mm, unsigned long insn_addr);
 452 #endif
 453
 454 BTFIXUPDEF_CALL(void, flush_cache_all, void)
 455 BTFIXUPDEF_CALL(void, flush_cache_mm, struct mm_struct *)
 456 BTFIXUPDEF_CALL(void, flush_cache_range, struct mm_struct *, unsigned long, unsigned long)
 457 BTFIXUPDEF_CALL(void, flush_cache_page, struct vm_area_struct *, unsigned long)
 458
 459 #define flush_cache_all() BTFIXUP_CALL(flush_cache_all)()
 460 #define flush_cache_mm(mm) BTFIXUP_CALL(flush_cache_mm)(mm)
 461 #define flush_cache_range(mm,start,end) BTFIXUP_CALL(flush_cache_range)(mm,start,end)
 462 #define flush_cache_page(vma,addr) BTFIXUP_CALL(flush_cache_page)(vma,addr)
 463 #define flush_icache_range(start, end)          do { } while (0)
 464
 465 BTFIXUPDEF_CALL(void, flush_tlb_all, void)
 466 BTFIXUPDEF_CALL(void, flush_tlb_mm, struct mm_struct *)
 467 BTFIXUPDEF_CALL(void, flush_tlb_range, struct mm_struct *, unsigned long, unsigned long)
 468 BTFIXUPDEF_CALL(void, flush_tlb_page, struct vm_area_struct *, unsigned long)
 469
 470 #define flush_tlb_all() BTFIXUP_CALL(flush_tlb_all)()
 471 #define flush_tlb_mm(mm) BTFIXUP_CALL(flush_tlb_mm)(mm)
 472 #define flush_tlb_range(mm,start,end) BTFIXUP_CALL(flush_tlb_range)(mm,start,end)
 473 #define flush_tlb_page(vma,addr) BTFIXUP_CALL(flush_tlb_page)(vma,addr)
 474
 475 BTFIXUPDEF_CALL(void, flush_page_to_ram, unsigned long)
 476 BTFIXUPDEF_CALL(void, flush_sig_insns, struct mm_struct *, unsigned long)
 477
 478 #define flush_page_to_ram(addr) BTFIXUP_CALL(flush_page_to_ram)(addr)
 479 #define flush_sig_insns(mm,insn_addr) BTFIXUP_CALL(flush_sig_insns)(mm,insn_addr)
 480
 481 /* The permissions for pgprot_val to make a page mapped on the obio space */
 482 extern unsigned int pg_iobits;
 483
 484 /* MMU context switching. */
 485 BTFIXUPDEF_CALL(void, switch_to_context, struct task_struct *)
 486
 487 #define switch_to_context(tsk) BTFIXUP_CALL(switch_to_context)(tsk)
 488
 489 /* Certain architectures need to do special things when pte's
 490  * within a page table are directly modified.  Thus, the following
 491  * hook is made available.
 492  */
 493
 494 BTFIXUPDEF_CALL(void, set_pte, pte_t *, pte_t)
 495
 496 #define set_pte(ptep,pteval) BTFIXUP_CALL(set_pte)(ptep,pteval)
 497
 498 BTFIXUPDEF_CALL(int, mmu_info, char *)
 499
 500 #define mmu_info(p) BTFIXUP_CALL(mmu_info)(p)
 501
 502 /* Fault handler stuff... */
 503 #define FAULT_CODE_PROT     0x1
 504 #define FAULT_CODE_WRITE    0x2
 505 #define FAULT_CODE_USER     0x4
 506
 507 BTFIXUPDEF_CALL(void, update_mmu_cache, struct vm_area_struct *, unsigned long, pte_t)
 508
 509 #define update_mmu_cache(vma,addr,pte) BTFIXUP_CALL(update_mmu_cache)(vma,addr,pte)
 510
 511 extern int invalid_segment;
 512
 513 #define SWP_TYPE(entry) (((entry) >> 2) & 0x7f)
 514 #define SWP_OFFSET(entry) (((entry) >> 9) & 0x3ffff)
 515 #define SWP_ENTRY(type,offset) ((((type) & 0x7f) << 2) | (((offset) & 0x3ffff) << 9))
 516
 517 struct ctx_list {
 518         struct ctx_list *next;
 519         struct ctx_list *prev;
 520         unsigned int ctx_number;
 521         struct mm_struct *ctx_mm;
 522 };
 523
 524 extern struct ctx_list *ctx_list_pool;  /* Dynamically allocated */
 525 extern struct ctx_list ctx_free;        /* Head of free list */
 526 extern struct ctx_list ctx_used;        /* Head of used contexts list */
 527
 528 #define NO_CONTEXT     -1
 529
 530 extern __inline__ void remove_from_ctx_list(struct ctx_list *entry)
 531 {
 532         entry->next->prev = entry->prev;
 533         entry->prev->next = entry->next;
 534 }
 535
 536 extern __inline__ void add_to_ctx_list(struct ctx_list *head, struct ctx_list *entry)
 537 {
 538         entry->next = head;
 539         (entry->prev = head->prev)->next = entry;
 540         head->prev = entry;
 541 }
 542 #define add_to_free_ctxlist(entry) add_to_ctx_list(&ctx_free, entry)
 543 #define add_to_used_ctxlist(entry) add_to_ctx_list(&ctx_used, entry)
 544
 545 extern __inline__ unsigned long
 546 __get_phys (unsigned long addr)
 547 {
 548         switch (sparc_cpu_model){
 549         case sun4:
 550         case sun4c:
 551                 return sun4c_get_pte (addr) << PAGE_SHIFT;
 552         case sun4m:
 553         case sun4d:
 554                 return ((srmmu_get_pte (addr) & 0xffffff00) << 4);
 555         default:
 556                 return 0;
 557         }
 558 }
 559
 560 extern __inline__ int
 561 __get_iospace (unsigned long addr)
 562 {
 563         switch (sparc_cpu_model){
 564         case sun4:
 565         case sun4c:
 566                 return -1; /* Don't check iospace on sun4c */
 567         case sun4m:
 568         case sun4d:
 569                 return (srmmu_get_pte (addr) >> 28);
 570         default:
 571                 return -1;
 572         }
 573 }
 574
 575 #define module_map      vmalloc
 576 #define module_unmap    vfree
 577 extern unsigned long *sparc_valid_addr_bitmap;
 578
 579 /* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
 580 #define PageSkip(page)          (test_bit(PG_skip, &(page)->flags))
 581 #define kern_addr_valid(addr)   (test_bit(__pa((unsigned long)(addr))>>20, sparc_valid_addr_bitmap))
 582
 583 #endif /* !(_SPARC_PGTABLE_H) */