arch/um/include/tlb.h

   1 /*
   2  * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
   3  * Licensed under the GPL
   4  */
   5
   6 #ifndef __TLB_H__
   7 #define __TLB_H__
   8
   9 #include "um_mmu.h"
  10
  11 struct host_vm_op {
  12         enum { MMAP, MUNMAP, MPROTECT } type;
  13         union {
  14                 struct {
  15                         unsigned long addr;
  16                         unsigned long len;
  17                         unsigned int r:1;
  18                         unsigned int w:1;
  19                         unsigned int x:1;
  20                         int fd;
  21                         __u64 offset;
  22                 } mmap;
  23                 struct {
  24                         unsigned long addr;
  25                         unsigned long len;
  26                 } munmap;
  27                 struct {
  28                         unsigned long addr;
  29                         unsigned long len;
  30                         unsigned int r:1;
  31                         unsigned int w:1;
  32                         unsigned int x:1;
  33                 } mprotect;
  34         } u;
  35 };
  36
  37 extern void mprotect_kernel_vm(int w);
  38 extern void force_flush_all(void);
  39 extern void fix_range_common(struct mm_struct *mm, unsigned long start_addr,
  40                              unsigned long end_addr, int force,
  41                              void (*do_ops)(union mm_context *,
  42                                             struct host_vm_op *, int));
  43 extern int flush_tlb_kernel_range_common(unsigned long start,
  44                                          unsigned long end);
  45
  46 extern int add_mmap(unsigned long virt, unsigned long phys, unsigned long len,
  47                     int r, int w, int x, struct host_vm_op *ops, int index,
  48                     int last_filled, union mm_context *mmu,
  49                     void (*do_ops)(union mm_context *, struct host_vm_op *,
  50                                    int));
  51 extern int add_munmap(unsigned long addr, unsigned long len,
  52                       struct host_vm_op *ops, int index, int last_filled,
  53                       union mm_context *mmu,
  54                       void (*do_ops)(union mm_context *, struct host_vm_op *,
  55                                      int));
  56 extern int add_mprotect(unsigned long addr, unsigned long len, int r, int w,
  57                         int x, struct host_vm_op *ops, int index,
  58                         int last_filled, union mm_context *mmu,
  59                         void (*do_ops)(union mm_context *, struct host_vm_op *,
  60                                        int));
  61 #endif