include/sysemu/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 #include "qemu/typedefs.h"
  19
  20 /* The physical and virtual address in the memory mapping are contiguous. */
  21 typedef struct MemoryMapping {
  22     hwaddr phys_addr;
  23     target_ulong virt_addr;
  24     ram_addr_t length;
  25     QTAILQ_ENTRY(MemoryMapping) next;
  26 } MemoryMapping;
  27
  28 struct MemoryMappingList {
  29     unsigned int num;
  30     MemoryMapping *last_mapping;
  31     QTAILQ_HEAD(, MemoryMapping) head;
  32 };
  33
  34 /*
  35  * add or merge the memory region [phys_addr, phys_addr + length) into the
  36  * memory mapping's list. The region's virtual address starts with virt_addr,
  37  * and is contiguous. The list is sorted by phys_addr.
  38  */
  39 void memory_mapping_list_add_merge_sorted(MemoryMappingList *list,
  40                                           hwaddr phys_addr,
  41                                           hwaddr virt_addr,
  42                                           ram_addr_t length);
  43
  44 void memory_mapping_list_free(MemoryMappingList *list);
  45
  46 void memory_mapping_list_init(MemoryMappingList *list);
  47
  48 void qemu_get_guest_memory_mapping(MemoryMappingList *list, Error **errp);
  49
  50 /* get guest's memory mapping without do paging(virtual address is 0). */
  51 void qemu_get_guest_simple_memory_mapping(MemoryMappingList *list);
  52
  53 void memory_mapping_filter(MemoryMappingList *list, int64_t begin,
  54                            int64_t length);
  55
  56 #endif