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
65