memory_mapping.h

   1 /*
   2  * QEMU memory mapping
   3  *
   4  * Copyright Fujitsu, Corp. 2011, 2012
   5  *
   6  * Authors:
   7  *     Wen Congyang <wency@cn.fujitsu.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10  * See the COPYING file in the top-level directory.
  11  *
  12  */
  13
  14 #ifndef MEMORY_MAPPING_H
  15 #define MEMORY_MAPPING_H
  16
  17 #include "qemu-queue.h"
  18
  19 /* The physical and virtual address in the memory mapping are contiguous. */
  20 typedef struct MemoryMapping {
  21     hwaddr phys_addr;
  22     target_ulong virt_addr;
  23     ram_addr_t length;
  24     QTAILQ_ENTRY(MemoryMapping) next;
  25 } MemoryMapping;
  26
  27 typedef struct MemoryMappingList {
  28     unsigned int num;
  29     MemoryMapping *last_mapping;
  30     QTAILQ_HEAD(, MemoryMapping) head;
  31 } MemoryMappingList;
  32
  33 int cpu_get_memory_mapping(MemoryMappingList *list, CPUArchState *env);
  34 bool cpu_paging_enabled(CPUArchState *env);
  35
  36 /*
  37  * add or merge the memory region [phys_addr, phys_addr + length) into the
  38  * memory mapping's list. The region's virtual address starts with virt_addr,
  39  * and is contiguous. The list is sorted by phys_addr.
  40  */
  41 void memory_mapping_list_add_merge_sorted(MemoryMappingList *list,
  42                                           hwaddr phys_addr,
  43                                           hwaddr virt_addr,
  44                                           ram_addr_t length);
  45
  46 void memory_mapping_list_free(MemoryMappingList *list);
  47
  48 void memory_mapping_list_init(MemoryMappingList *list);
  49
  50 /*
  51  * Return value:
  52  *    0: success
  53  *   -1: failed
  54  *   -2: unsupported
  55  */
  56 int qemu_get_guest_memory_mapping(MemoryMappingList *list);
  57
  58 /* get guest's memory mapping without do paging(virtual address is 0). */
  59 void qemu_get_guest_simple_memory_mapping(MemoryMappingList *list);
  60
  61 void memory_mapping_filter(MemoryMappingList *list, int64_t begin,
  62                            int64_t length);
  63
  64 #endif