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
57