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 "exec/cpu-defs.h" |
19 | #include "exec/memory.h" |
20 | |
21 | typedef struct GuestPhysBlock { |
22 | /* visible to guest, reflects PCI hole, etc */ |
23 | hwaddr target_start; |
24 | |
25 | /* implies size */ |
26 | hwaddr target_end; |
27 | |
28 | /* points into host memory */ |
29 | uint8_t *host_addr; |
30 | |
31 | /* points to the MemoryRegion that this block belongs to */ |
32 | MemoryRegion *mr; |
33 | |
34 | QTAILQ_ENTRY(GuestPhysBlock) next; |
35 | } GuestPhysBlock; |
36 | |
37 | /* point-in-time snapshot of guest-visible physical mappings */ |
38 | typedef struct GuestPhysBlockList { |
39 | unsigned num; |
40 | QTAILQ_HEAD(, GuestPhysBlock) head; |
41 | } GuestPhysBlockList; |
42 | |
43 | /* The physical and virtual address in the memory mapping are contiguous. */ |
44 | typedef struct MemoryMapping { |
45 | hwaddr phys_addr; |
46 | target_ulong virt_addr; |
47 | ram_addr_t length; |
48 | QTAILQ_ENTRY(MemoryMapping) next; |
49 | } MemoryMapping; |
50 | |
51 | struct MemoryMappingList { |
52 | unsigned int num; |
53 | MemoryMapping *last_mapping; |
54 | QTAILQ_HEAD(, MemoryMapping) head; |
55 | }; |
56 | |
57 | /* |
58 | * add or merge the memory region [phys_addr, phys_addr + length) into the |
59 | * memory mapping's list. The region's virtual address starts with virt_addr, |
60 | * and is contiguous. The list is sorted by phys_addr. |
61 | */ |
62 | void memory_mapping_list_add_merge_sorted(MemoryMappingList *list, |
63 | hwaddr phys_addr, |
64 | hwaddr virt_addr, |
65 | ram_addr_t length); |
66 | |
67 | void memory_mapping_list_free(MemoryMappingList *list); |
68 | |
69 | void memory_mapping_list_init(MemoryMappingList *list); |
70 | |
71 | void guest_phys_blocks_free(GuestPhysBlockList *list); |
72 | void guest_phys_blocks_init(GuestPhysBlockList *list); |
73 | void guest_phys_blocks_append(GuestPhysBlockList *list); |
74 | |
75 | void qemu_get_guest_memory_mapping(MemoryMappingList *list, |
76 | const GuestPhysBlockList *guest_phys_blocks, |
77 | Error **errp); |
78 | |
79 | /* get guest's memory mapping without do paging(virtual address is 0). */ |
80 | void qemu_get_guest_simple_memory_mapping(MemoryMappingList *list, |
81 | const GuestPhysBlockList *guest_phys_blocks); |
82 | |
83 | void memory_mapping_filter(MemoryMappingList *list, int64_t begin, |
84 | int64_t length); |
85 | |
86 | #endif |
87 | |