include/asm-sparc/pgtable.h

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 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 externvoidload_mmu(void);
 28 externintio_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 externvoid*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 externunsigned intpmd_align(unsigned int addr)__attribute__((const));
 71 extern __inline__ unsigned intpmd_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 externunsigned intpgdir_align(unsigned int addr)__attribute__((const));
 81 extern __inline__ unsigned intpgdir_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 externunsigned 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 externint 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 externunsigned 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__ intpte_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__ intpmd_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 externintpte_write(pte_t pte)__attribute__((const));
 250 extern __inline__ intpte_write(pte_t pte)
 251 {
 252 returnpte_val(pte) &BTFIXUP_HALF(pte_writei);
 253 }
 254
 255 externintpte_dirty(pte_t pte)__attribute__((const));
 256 extern __inline__ intpte_dirty(pte_t pte)
 257 {
 258 returnpte_val(pte) &BTFIXUP_HALF(pte_dirtyi);
 259 }
 260
 261 externintpte_young(pte_t pte)__attribute__((const));
 262 extern __inline__ intpte_young(pte_t pte)
 263 {
 264 returnpte_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 externstruct 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__ voidfree_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 externvoidsmp_flush_cache_all(void);
 438 externvoidsmp_flush_cache_mm(struct mm_struct *mm);
 439 externvoidsmp_flush_cache_range(struct mm_struct *mm,
 440 unsigned long start,
 441 unsigned long end);
 442 externvoidsmp_flush_cache_page(struct vm_area_struct *vma,unsigned long page);
 443
 444 externvoidsmp_flush_tlb_all(void);
 445 externvoidsmp_flush_tlb_mm(struct mm_struct *mm);
 446 externvoidsmp_flush_tlb_range(struct mm_struct *mm,
 447 unsigned long start,
 448 unsigned long end);
 449 externvoidsmp_flush_tlb_page(struct vm_area_struct *mm,unsigned long page);
 450 externvoidsmp_flush_page_to_ram(unsigned long page);
 451 externvoidsmp_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 externunsigned 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 externint 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 externstruct ctx_list *ctx_list_pool;/* Dynamically allocated */
 525 externstruct ctx_list ctx_free;/* Head of free list */
 526 externstruct ctx_list ctx_used;/* Head of used contexts list */
 527
 528 #define NO_CONTEXT -1
 529
 530 extern __inline__ voidremove_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__ voidadd_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 returnsun4c_get_pte(addr) << PAGE_SHIFT;
 552 case sun4m:
 553 case sun4d:
 554 return((srmmu_get_pte(addr) &0xffffff00) <<4);
 555 default:
 556 return0;
 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 externunsigned 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) */