/* $Id: pgtable.h,v 1.77 1998/08/04 20:51:19 davem Exp $ */ #ifndef _SPARC_PGTABLE_H #define _SPARC_PGTABLE_H /* asm-sparc/pgtable.h: Defines and functions used to work * with Sparc page tables. * * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) */ #include #include #include #ifdef CONFIG_SUN4 #include #else #include #endif #include #include #include #include #include #include extern void load_mmu(void); extern int io_remap_page_range(unsigned long from, unsigned long to, unsigned long size, pgprot_t prot, int space); BTFIXUPDEF_CALL(void, quick_kernel_fault, unsigned long) #define quick_kernel_fault(addr) BTFIXUP_CALL(quick_kernel_fault)(addr) /* Allocate a block of RAM which is aligned to its size. This procedure can be used until the call to mem_init(). */ extern void *sparc_init_alloc(unsigned long *kbrk, unsigned long size); /* Routines for data transfer buffers. */ BTFIXUPDEF_CALL(char *, mmu_lockarea, char *, unsigned long) BTFIXUPDEF_CALL(void, mmu_unlockarea, char *, unsigned long) #define mmu_lockarea(vaddr,len) BTFIXUP_CALL(mmu_lockarea)(vaddr,len) #define mmu_unlockarea(vaddr,len) BTFIXUP_CALL(mmu_unlockarea)(vaddr,len) /* Routines for getting a dvma scsi buffer. */ struct mmu_sglist { char *addr; char *__dont_touch; unsigned int len; __u32 dvma_addr; }; BTFIXUPDEF_CALL(__u32, mmu_get_scsi_one, char *, unsigned long, struct linux_sbus *sbus) BTFIXUPDEF_CALL(void, mmu_get_scsi_sgl, struct mmu_sglist *, int, struct linux_sbus *sbus) BTFIXUPDEF_CALL(void, mmu_release_scsi_one, __u32, unsigned long, struct linux_sbus *sbus) BTFIXUPDEF_CALL(void, mmu_release_scsi_sgl, struct mmu_sglist *, int, struct linux_sbus *sbus) BTFIXUPDEF_CALL(void, mmu_map_dma_area, unsigned long addr, int len) #define mmu_get_scsi_one(vaddr,len,sbus) BTFIXUP_CALL(mmu_get_scsi_one)(vaddr,len,sbus) #define mmu_get_scsi_sgl(sg,sz,sbus) BTFIXUP_CALL(mmu_get_scsi_sgl)(sg,sz,sbus) #define mmu_release_scsi_one(vaddr,len,sbus) BTFIXUP_CALL(mmu_release_scsi_one)(vaddr,len,sbus) #define mmu_release_scsi_sgl(sg,sz,sbus) BTFIXUP_CALL(mmu_release_scsi_sgl)(sg,sz,sbus) #define mmu_map_dma_area(addr,len) BTFIXUP_CALL(mmu_map_dma_area)(addr,len) BTFIXUPDEF_SIMM13(pmd_shift) BTFIXUPDEF_SETHI(pmd_size) BTFIXUPDEF_SETHI(pmd_mask) extern unsigned int pmd_align(unsigned int addr) __attribute__((const)); extern __inline__ unsigned int pmd_align(unsigned int addr) { return ((addr + ~BTFIXUP_SETHI(pmd_mask)) & BTFIXUP_SETHI(pmd_mask)); } BTFIXUPDEF_SIMM13(pgdir_shift) BTFIXUPDEF_SETHI(pgdir_size) BTFIXUPDEF_SETHI(pgdir_mask) extern unsigned int pgdir_align(unsigned int addr) __attribute__((const)); extern __inline__ unsigned int pgdir_align(unsigned int addr) { return ((addr + ~BTFIXUP_SETHI(pgdir_mask)) & BTFIXUP_SETHI(pgdir_mask)); } BTFIXUPDEF_SIMM13(ptrs_per_pte) BTFIXUPDEF_SIMM13(ptrs_per_pmd) BTFIXUPDEF_SIMM13(ptrs_per_pgd) BTFIXUPDEF_SIMM13(user_ptrs_per_pgd) #define VMALLOC_VMADDR(x) ((unsigned long)(x)) /* This is the same accross all platforms */ #define VMALLOC_START (0xfe300000) #define VMALLOC_END ~0x0UL BTFIXUPDEF_INT(page_none) BTFIXUPDEF_INT(page_shared) BTFIXUPDEF_INT(page_copy) BTFIXUPDEF_INT(page_readonly) BTFIXUPDEF_INT(page_kernel) #define PMD_SHIFT BTFIXUP_SIMM13(pmd_shift) #define PMD_SIZE BTFIXUP_SETHI(pmd_size) #define PMD_MASK BTFIXUP_SETHI(pmd_mask) #define PMD_ALIGN(addr) pmd_align(addr) #define PGDIR_SHIFT BTFIXUP_SIMM13(pgdir_shift) #define PGDIR_SIZE BTFIXUP_SETHI(pgdir_size) #define PGDIR_MASK BTFIXUP_SETHI(pgdir_mask) #define PGDIR_ALIGN pgdir_align(addr) #define PTRS_PER_PTE BTFIXUP_SIMM13(ptrs_per_pte) #define PTRS_PER_PMD BTFIXUP_SIMM13(ptrs_per_pmd) #define PTRS_PER_PGD BTFIXUP_SIMM13(ptrs_per_pgd) #define USER_PTRS_PER_PGD BTFIXUP_SIMM13(user_ptrs_per_pgd) #define PAGE_NONE __pgprot(BTFIXUP_INT(page_none)) #define PAGE_SHARED __pgprot(BTFIXUP_INT(page_shared)) #define PAGE_COPY __pgprot(BTFIXUP_INT(page_copy)) #define PAGE_READONLY __pgprot(BTFIXUP_INT(page_readonly)) #define PAGE_KERNEL __pgprot(BTFIXUP_INT(page_kernel)) BTFIXUPDEF_CALL(void, set_pgdir, unsigned long, pgd_t) #define set_pgdir(address,entry) BTFIXUP_CALL(set_pgdir)(address,entry) /* Top-level page directory */ extern pgd_t swapper_pg_dir[1024]; /* Page table for 0-4MB for everybody, on the Sparc this * holds the same as on the i386. */ extern pte_t pg0[1024]; extern pte_t pg1[1024]; extern pte_t pg2[1024]; extern pte_t pg3[1024]; extern unsigned long ptr_in_current_pgd; /* the no. of pointers that fit on a page: this will go away */ #define PTRS_PER_PAGE (PAGE_SIZE/sizeof(void*)) /* Here is a trick, since mmap.c need the initializer elements for * protection_map[] to be constant at compile time, I set the following * to all zeros. I set it to the real values after I link in the * appropriate MMU page table routines at boot time. */ #define __P000 __pgprot(0) #define __P001 __pgprot(0) #define __P010 __pgprot(0) #define __P011 __pgprot(0) #define __P100 __pgprot(0) #define __P101 __pgprot(0) #define __P110 __pgprot(0) #define __P111 __pgprot(0) #define __S000 __pgprot(0) #define __S001 __pgprot(0) #define __S010 __pgprot(0) #define __S011 __pgprot(0) #define __S100 __pgprot(0) #define __S101 __pgprot(0) #define __S110 __pgprot(0) #define __S111 __pgprot(0) extern int num_contexts; /* * BAD_PAGETABLE is used when we need a bogus page-table, while * BAD_PAGE is used for a bogus page. * * ZERO_PAGE is a global shared page that is always zero: used * for zero-mapped memory areas etc.. */ extern pte_t __bad_page(void); extern pte_t * __bad_pagetable(void); extern unsigned long empty_zero_page; #define BAD_PAGETABLE __bad_pagetable() #define BAD_PAGE __bad_page() #define ZERO_PAGE ((unsigned long)(&(empty_zero_page))) /* number of bits that fit into a memory pointer */ #define BITS_PER_PTR (8*sizeof(unsigned long)) /* to align the pointer to a pointer address */ #define PTR_MASK (~(sizeof(void*)-1)) #define SIZEOF_PTR_LOG2 2 BTFIXUPDEF_CALL_CONST(unsigned long, pte_page, pte_t) BTFIXUPDEF_CALL_CONST(unsigned long, pmd_page, pmd_t) BTFIXUPDEF_CALL_CONST(unsigned long, pgd_page, pgd_t) #define pte_page(pte) BTFIXUP_CALL(pte_page)(pte) #define pmd_page(pmd) BTFIXUP_CALL(pmd_page)(pmd) #define pgd_page(pgd) BTFIXUP_CALL(pgd_page)(pgd) BTFIXUPDEF_CALL(void, sparc_update_rootmmu_dir, struct task_struct *, pgd_t *pgdir) #define SET_PAGE_DIR(tsk,pgdir) BTFIXUP_CALL(sparc_update_rootmmu_dir)(tsk, pgdir) /* to find an entry in a page-table */ #define PAGE_PTR(address) \ ((unsigned long)(address)>>(PAGE_SHIFT-SIZEOF_PTR_LOG2)&PTR_MASK&~PAGE_MASK) BTFIXUPDEF_SETHI(none_mask) BTFIXUPDEF_CALL_CONST(int, pte_present, pte_t) BTFIXUPDEF_CALL(void, pte_clear, pte_t *) extern __inline__ int pte_none(pte_t pte) { return !(pte_val(pte) & ~BTFIXUP_SETHI(none_mask)); } #define pte_present(pte) BTFIXUP_CALL(pte_present)(pte) #define pte_clear(pte) BTFIXUP_CALL(pte_clear)(pte) BTFIXUPDEF_CALL_CONST(int, pmd_bad, pmd_t) BTFIXUPDEF_CALL_CONST(int, pmd_present, pmd_t) BTFIXUPDEF_CALL(void, pmd_clear, pmd_t *) extern __inline__ int pmd_none(pmd_t pmd) { return !(pmd_val(pmd) & ~BTFIXUP_SETHI(none_mask)); } #define pmd_bad(pmd) BTFIXUP_CALL(pmd_bad)(pmd) #define pmd_present(pmd) BTFIXUP_CALL(pmd_present)(pmd) #define pmd_clear(pmd) BTFIXUP_CALL(pmd_clear)(pmd) BTFIXUPDEF_CALL_CONST(int, pgd_none, pgd_t) BTFIXUPDEF_CALL_CONST(int, pgd_bad, pgd_t) BTFIXUPDEF_CALL_CONST(int, pgd_present, pgd_t) BTFIXUPDEF_CALL(void, pgd_clear, pgd_t *) #define pgd_none(pgd) BTFIXUP_CALL(pgd_none)(pgd) #define pgd_bad(pgd) BTFIXUP_CALL(pgd_bad)(pgd) #define pgd_present(pgd) BTFIXUP_CALL(pgd_present)(pgd) #define pgd_clear(pgd) BTFIXUP_CALL(pgd_clear)(pgd) /* * The following only work if pte_present() is true. * Undefined behaviour if not.. */ BTFIXUPDEF_HALF(pte_writei) BTFIXUPDEF_HALF(pte_dirtyi) BTFIXUPDEF_HALF(pte_youngi) extern int pte_write(pte_t pte) __attribute__((const)); extern __inline__ int pte_write(pte_t pte) { return pte_val(pte) & BTFIXUP_HALF(pte_writei); } extern int pte_dirty(pte_t pte) __attribute__((const)); extern __inline__ int pte_dirty(pte_t pte) { return pte_val(pte) & BTFIXUP_HALF(pte_dirtyi); } extern int pte_young(pte_t pte) __attribute__((const)); extern __inline__ int pte_young(pte_t pte) { return pte_val(pte) & BTFIXUP_HALF(pte_youngi); } BTFIXUPDEF_HALF(pte_wrprotecti) BTFIXUPDEF_HALF(pte_mkcleani) BTFIXUPDEF_HALF(pte_mkoldi) extern pte_t pte_wrprotect(pte_t pte) __attribute__((const)); extern __inline__ pte_t pte_wrprotect(pte_t pte) { return __pte(pte_val(pte) & ~BTFIXUP_HALF(pte_wrprotecti)); } extern pte_t pte_mkclean(pte_t pte) __attribute__((const)); extern __inline__ pte_t pte_mkclean(pte_t pte) { return __pte(pte_val(pte) & ~BTFIXUP_HALF(pte_mkcleani)); } extern pte_t pte_mkold(pte_t pte) __attribute__((const)); extern __inline__ pte_t pte_mkold(pte_t pte) { return __pte(pte_val(pte) & ~BTFIXUP_HALF(pte_mkoldi)); } BTFIXUPDEF_CALL_CONST(pte_t, pte_mkwrite, pte_t) BTFIXUPDEF_CALL_CONST(pte_t, pte_mkdirty, pte_t) BTFIXUPDEF_CALL_CONST(pte_t, pte_mkyoung, pte_t) #define pte_mkwrite(pte) BTFIXUP_CALL(pte_mkwrite)(pte) #define pte_mkdirty(pte) BTFIXUP_CALL(pte_mkdirty)(pte) #define pte_mkyoung(pte) BTFIXUP_CALL(pte_mkyoung)(pte) /* * Conversion functions: convert a page and protection to a page entry, * and a page entry and page directory to the page they refer to. */ BTFIXUPDEF_CALL_CONST(pte_t, mk_pte, unsigned long, pgprot_t) BTFIXUPDEF_CALL_CONST(pte_t, mk_pte_phys, unsigned long, pgprot_t) BTFIXUPDEF_CALL_CONST(pte_t, mk_pte_io, unsigned long, pgprot_t, int) #define mk_pte(page,pgprot) BTFIXUP_CALL(mk_pte)(page,pgprot) #define mk_pte_phys(page,pgprot) BTFIXUP_CALL(mk_pte_phys)(page,pgprot) #define mk_pte_io(page,pgprot,space) BTFIXUP_CALL(mk_pte_io)(page,pgprot,space) BTFIXUPDEF_CALL(void, pgd_set, pgd_t *, pmd_t *) #define pgd_set(pgdp,pmdp) BTFIXUP_CALL(pgd_set)(pgdp,pmdp) BTFIXUPDEF_INT(pte_modify_mask) extern pte_t pte_modify(pte_t pte, pgprot_t newprot) __attribute__((const)); extern __inline__ pte_t pte_modify(pte_t pte, pgprot_t newprot) { return __pte((pte_val(pte) & BTFIXUP_INT(pte_modify_mask)) | pgprot_val(newprot)); } BTFIXUPDEF_CALL(pgd_t *, pgd_offset, struct mm_struct *, unsigned long) BTFIXUPDEF_CALL(pmd_t *, pmd_offset, pgd_t *, unsigned long) BTFIXUPDEF_CALL(pte_t *, pte_offset, pmd_t *, unsigned long) /* to find an entry in a kernel page-table-directory */ #define pgd_offset_k(address) pgd_offset(&init_mm, address) /* to find an entry in a page-table-directory */ #define pgd_offset(mm,addr) BTFIXUP_CALL(pgd_offset)(mm,addr) /* Find an entry in the second-level page table.. */ #define pmd_offset(dir,addr) BTFIXUP_CALL(pmd_offset)(dir,addr) /* Find an entry in the third-level page table.. */ #define pte_offset(dir,addr) BTFIXUP_CALL(pte_offset)(dir,addr) extern struct pgtable_cache_struct { unsigned long *pgd_cache; unsigned long *pte_cache; unsigned long pgtable_cache_sz; unsigned long pgd_cache_sz; spinlock_t pgd_spinlock; spinlock_t pte_spinlock; } pgt_quicklists; #define pgd_quicklist (pgt_quicklists.pgd_cache) #define pmd_quicklist ((unsigned long *)0) #define pte_quicklist (pgt_quicklists.pte_cache) #define pgd_spinlock (pgt_quicklists.pgd_spinlock) #define pte_spinlock (pgt_quicklists.pte_spinlock) #define pgtable_cache_size (pgt_quicklists.pgtable_cache_sz) #define pgd_cache_size (pgt_quicklists.pgd_cache_sz) BTFIXUPDEF_CALL(pte_t *, get_pte_fast, void) BTFIXUPDEF_CALL(pgd_t *, get_pgd_fast, void) BTFIXUPDEF_CALL(void, free_pte_slow, pte_t *) BTFIXUPDEF_CALL(void, free_pgd_slow, pgd_t *) BTFIXUPDEF_CALL(int, do_check_pgt_cache, int, int) #define get_pte_fast() BTFIXUP_CALL(get_pte_fast)() extern __inline__ pmd_t *get_pmd_fast(void) { return (pmd_t *)0; } #define get_pgd_fast() BTFIXUP_CALL(get_pgd_fast)() #define free_pte_slow(pte) BTFIXUP_CALL(free_pte_slow)(pte) extern __inline__ void free_pmd_slow(pmd_t *pmd) { } #define free_pgd_slow(pgd) BTFIXUP_CALL(free_pgd_slow)(pgd) #define do_check_pgt_cache(low,high) BTFIXUP_CALL(do_check_pgt_cache)(low,high) /* * Allocate and free page tables. The xxx_kernel() versions are * used to allocate a kernel page table - this turns on ASN bits * if any, and marks the page tables reserved. */ BTFIXUPDEF_CALL(void, pte_free_kernel, pte_t *) BTFIXUPDEF_CALL(pte_t *, pte_alloc_kernel, pmd_t *, unsigned long) #define pte_free_kernel(pte) BTFIXUP_CALL(pte_free_kernel)(pte) #define pte_alloc_kernel(pmd,addr) BTFIXUP_CALL(pte_alloc_kernel)(pmd,addr) BTFIXUPDEF_CALL(void, pmd_free_kernel, pmd_t *) BTFIXUPDEF_CALL(pmd_t *, pmd_alloc_kernel, pgd_t *, unsigned long) #define pmd_free_kernel(pmd) BTFIXUP_CALL(pmd_free_kernel)(pmd) #define pmd_alloc_kernel(pgd,addr) BTFIXUP_CALL(pmd_alloc_kernel)(pgd,addr) BTFIXUPDEF_CALL(void, pte_free, pte_t *) BTFIXUPDEF_CALL(pte_t *, pte_alloc, pmd_t *, unsigned long) #define pte_free(pte) BTFIXUP_CALL(pte_free)(pte) #define pte_alloc(pmd,addr) BTFIXUP_CALL(pte_alloc)(pmd,addr) BTFIXUPDEF_CALL(void, pmd_free, pmd_t *) BTFIXUPDEF_CALL(pmd_t *, pmd_alloc, pgd_t *, unsigned long) #define pmd_free(pmd) BTFIXUP_CALL(pmd_free)(pmd) #define pmd_alloc(pgd,addr) BTFIXUP_CALL(pmd_alloc)(pgd,addr) BTFIXUPDEF_CALL(void, pgd_free, pgd_t *) BTFIXUPDEF_CALL(pgd_t *, pgd_alloc, void) #define pgd_free(pgd) BTFIXUP_CALL(pgd_free)(pgd) #define pgd_alloc() BTFIXUP_CALL(pgd_alloc)() /* Fine grained cache/tlb flushing. */ #ifdef __SMP__ BTFIXUPDEF_CALL(void, local_flush_cache_all, void) BTFIXUPDEF_CALL(void, local_flush_cache_mm, struct mm_struct *) BTFIXUPDEF_CALL(void, local_flush_cache_range, struct mm_struct *, unsigned long, unsigned long) BTFIXUPDEF_CALL(void, local_flush_cache_page, struct vm_area_struct *, unsigned long) #define local_flush_cache_all() BTFIXUP_CALL(local_flush_cache_all)() #define local_flush_cache_mm(mm) BTFIXUP_CALL(local_flush_cache_mm)(mm) #define local_flush_cache_range(mm,start,end) BTFIXUP_CALL(local_flush_cache_range)(mm,start,end) #define local_flush_cache_page(vma,addr) BTFIXUP_CALL(local_flush_cache_page)(vma,addr) BTFIXUPDEF_CALL(void, local_flush_tlb_all, void) BTFIXUPDEF_CALL(void, local_flush_tlb_mm, struct mm_struct *) BTFIXUPDEF_CALL(void, local_flush_tlb_range, struct mm_struct *, unsigned long, unsigned long) BTFIXUPDEF_CALL(void, local_flush_tlb_page, struct vm_area_struct *, unsigned long) #define local_flush_tlb_all() BTFIXUP_CALL(local_flush_tlb_all)() #define local_flush_tlb_mm(mm) BTFIXUP_CALL(local_flush_tlb_mm)(mm) #define local_flush_tlb_range(mm,start,end) BTFIXUP_CALL(local_flush_tlb_range)(mm,start,end) #define local_flush_tlb_page(vma,addr) BTFIXUP_CALL(local_flush_tlb_page)(vma,addr) BTFIXUPDEF_CALL(void, local_flush_page_to_ram, unsigned long) BTFIXUPDEF_CALL(void, local_flush_sig_insns, struct mm_struct *, unsigned long) #define local_flush_page_to_ram(addr) BTFIXUP_CALL(local_flush_page_to_ram)(addr) #define local_flush_sig_insns(mm,insn_addr) BTFIXUP_CALL(local_flush_sig_insns)(mm,insn_addr) extern void smp_flush_cache_all(void); extern void smp_flush_cache_mm(struct mm_struct *mm); extern void smp_flush_cache_range(struct mm_struct *mm, unsigned long start, unsigned long end); extern void smp_flush_cache_page(struct vm_area_struct *vma, unsigned long page); extern void smp_flush_tlb_all(void); extern void smp_flush_tlb_mm(struct mm_struct *mm); extern void smp_flush_tlb_range(struct mm_struct *mm, unsigned long start, unsigned long end); extern void smp_flush_tlb_page(struct vm_area_struct *mm, unsigned long page); extern void smp_flush_page_to_ram(unsigned long page); extern void smp_flush_sig_insns(struct mm_struct *mm, unsigned long insn_addr); #endif BTFIXUPDEF_CALL(void, flush_cache_all, void) BTFIXUPDEF_CALL(void, flush_cache_mm, struct mm_struct *) BTFIXUPDEF_CALL(void, flush_cache_range, struct mm_struct *, unsigned long, unsigned long) BTFIXUPDEF_CALL(void, flush_cache_page, struct vm_area_struct *, unsigned long) #define flush_cache_all() BTFIXUP_CALL(flush_cache_all)() #define flush_cache_mm(mm) BTFIXUP_CALL(flush_cache_mm)(mm) #define flush_cache_range(mm,start,end) BTFIXUP_CALL(flush_cache_range)(mm,start,end) #define flush_cache_page(vma,addr) BTFIXUP_CALL(flush_cache_page)(vma,addr) #define flush_icache_range(start, end) do { } while (0) BTFIXUPDEF_CALL(void, flush_tlb_all, void) BTFIXUPDEF_CALL(void, flush_tlb_mm, struct mm_struct *) BTFIXUPDEF_CALL(void, flush_tlb_range, struct mm_struct *, unsigned long, unsigned long) BTFIXUPDEF_CALL(void, flush_tlb_page, struct vm_area_struct *, unsigned long) #define flush_tlb_all() BTFIXUP_CALL(flush_tlb_all)() #define flush_tlb_mm(mm) BTFIXUP_CALL(flush_tlb_mm)(mm) #define flush_tlb_range(mm,start,end) BTFIXUP_CALL(flush_tlb_range)(mm,start,end) #define flush_tlb_page(vma,addr) BTFIXUP_CALL(flush_tlb_page)(vma,addr) BTFIXUPDEF_CALL(void, flush_page_to_ram, unsigned long) BTFIXUPDEF_CALL(void, flush_sig_insns, struct mm_struct *, unsigned long) #define flush_page_to_ram(addr) BTFIXUP_CALL(flush_page_to_ram)(addr) #define flush_sig_insns(mm,insn_addr) BTFIXUP_CALL(flush_sig_insns)(mm,insn_addr) /* The permissions for pgprot_val to make a page mapped on the obio space */ extern unsigned int pg_iobits; /* MMU context switching. */ BTFIXUPDEF_CALL(void, switch_to_context, struct task_struct *) #define switch_to_context(tsk) BTFIXUP_CALL(switch_to_context)(tsk) /* Certain architectures need to do special things when pte's * within a page table are directly modified. Thus, the following * hook is made available. */ BTFIXUPDEF_CALL(void, set_pte, pte_t *, pte_t) #define set_pte(ptep,pteval) BTFIXUP_CALL(set_pte)(ptep,pteval) BTFIXUPDEF_CALL(int, mmu_info, char *) #define mmu_info(p) BTFIXUP_CALL(mmu_info)(p) /* Fault handler stuff... */ #define FAULT_CODE_PROT 0x1 #define FAULT_CODE_WRITE 0x2 #define FAULT_CODE_USER 0x4 BTFIXUPDEF_CALL(void, update_mmu_cache, struct vm_area_struct *, unsigned long, pte_t) #define update_mmu_cache(vma,addr,pte) BTFIXUP_CALL(update_mmu_cache)(vma,addr,pte) extern int invalid_segment; #define SWP_TYPE(entry) (((entry) >> 2) & 0x7f) #define SWP_OFFSET(entry) (((entry) >> 9) & 0x3ffff) #define SWP_ENTRY(type,offset) ((((type) & 0x7f) << 2) | (((offset) & 0x3ffff) << 9)) struct ctx_list { struct ctx_list *next; struct ctx_list *prev; unsigned int ctx_number; struct mm_struct *ctx_mm; }; extern struct ctx_list *ctx_list_pool; /* Dynamically allocated */ extern struct ctx_list ctx_free; /* Head of free list */ extern struct ctx_list ctx_used; /* Head of used contexts list */ #define NO_CONTEXT -1 extern __inline__ void remove_from_ctx_list(struct ctx_list *entry) { entry->next->prev = entry->prev; entry->prev->next = entry->next; } extern __inline__ void add_to_ctx_list(struct ctx_list *head, struct ctx_list *entry) { entry->next = head; (entry->prev = head->prev)->next = entry; head->prev = entry; } #define add_to_free_ctxlist(entry) add_to_ctx_list(&ctx_free, entry) #define add_to_used_ctxlist(entry) add_to_ctx_list(&ctx_used, entry) extern __inline__ unsigned long __get_phys (unsigned long addr) { switch (sparc_cpu_model){ case sun4: case sun4c: return sun4c_get_pte (addr) << PAGE_SHIFT; case sun4m: case sun4d: return ((srmmu_get_pte (addr) & 0xffffff00) << 4); default: return 0; } } extern __inline__ int __get_iospace (unsigned long addr) { switch (sparc_cpu_model){ case sun4: case sun4c: return -1; /* Don't check iospace on sun4c */ case sun4m: case sun4d: return (srmmu_get_pte (addr) >> 28); default: return -1; } } #define module_map vmalloc #define module_unmap vfree /* Needs to be defined here and not in linux/mm.h, as it is arch dependent */ #define PageSkip(page) (test_bit(PG_skip, &(page)->flags)) #endif /* !(_SPARC_PGTABLE_H) */