src/system/kernel/arch/x86/paging/X86PagingMethod.h

   1 /*
   2  * Copyright 2010, Ingo Weinhold, ingo_weinhold@gmx.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef KERNEL_ARCH_X86_PAGING_X86_PAGING_METHOD_H
   6 #define KERNEL_ARCH_X86_PAGING_X86_PAGING_METHOD_H
   7
   8
   9 #include <SupportDefs.h>
  10
  11 #include <vm/vm_types.h>
  12
  13
  14 struct kernel_args;
  15 struct VMPhysicalPageMapper;
  16 struct VMTranslationMap;
  17
  18
  19 class X86PagingMethod {
  20 public:
  21         virtual                                         ~X86PagingMethod();
  22
  23         virtual status_t                        Init(kernel_args* args,
  24                                                                         VMPhysicalPageMapper** _physicalPageMapper)
  25                                                                                 = 0;
  26         virtual status_t                        InitPostArea(kernel_args* args) = 0;
  27
  28         virtual status_t                        CreateTranslationMap(bool kernel,
  29                                                                         VMTranslationMap** _map) = 0;
  30
  31         virtual status_t                        MapEarly(kernel_args* args,
  32                                                                         addr_t virtualAddress,
  33                                                                         phys_addr_t physicalAddress,
  34                                                                         uint8 attributes,
  35                                                                         page_num_t (*get_free_page)(kernel_args*))
  36                                                                                 = 0;
  37
  38         virtual bool                            IsKernelPageAccessible(addr_t virtualAddress,
  39                                                                         uint32 protection) = 0;
  40 };
  41
  42
  43 extern X86PagingMethod* gX86PagingMethod;
  44
  45
  46 #endif  // KERNEL_ARCH_X86_PAGING_X86_PAGING_METHOD_H