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Diffstat (limited to 'include/system/memory_mapping.h')
-rw-r--r-- | include/system/memory_mapping.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/include/system/memory_mapping.h b/include/system/memory_mapping.h new file mode 100644 index 0000000..021e0a6 --- /dev/null +++ b/include/system/memory_mapping.h @@ -0,0 +1,85 @@ +/* + * QEMU memory mapping + * + * Copyright Fujitsu, Corp. 2011, 2012 + * + * Authors: + * Wen Congyang <wency@cn.fujitsu.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ + +#ifndef MEMORY_MAPPING_H +#define MEMORY_MAPPING_H + +#include "qemu/queue.h" +#include "exec/cpu-common.h" + +typedef struct GuestPhysBlock { + /* visible to guest, reflects PCI hole, etc */ + hwaddr target_start; + + /* implies size */ + hwaddr target_end; + + /* points into host memory */ + uint8_t *host_addr; + + /* points to the MemoryRegion that this block belongs to */ + MemoryRegion *mr; + + QTAILQ_ENTRY(GuestPhysBlock) next; +} GuestPhysBlock; + +/* point-in-time snapshot of guest-visible physical mappings */ +typedef struct GuestPhysBlockList { + unsigned num; + QTAILQ_HEAD(, GuestPhysBlock) head; +} GuestPhysBlockList; + +/* The physical and virtual address in the memory mapping are contiguous. */ +typedef struct MemoryMapping { + hwaddr phys_addr; + vaddr virt_addr; + ram_addr_t length; + QTAILQ_ENTRY(MemoryMapping) next; +} MemoryMapping; + +struct MemoryMappingList { + unsigned int num; + MemoryMapping *last_mapping; + QTAILQ_HEAD(, MemoryMapping) head; +}; + +/* + * add or merge the memory region [phys_addr, phys_addr + length) into the + * memory mapping's list. The region's virtual address starts with virt_addr, + * and is contiguous. The list is sorted by phys_addr. + */ +void memory_mapping_list_add_merge_sorted(MemoryMappingList *list, + hwaddr phys_addr, + hwaddr virt_addr, + ram_addr_t length); + +void memory_mapping_list_free(MemoryMappingList *list); + +void memory_mapping_list_init(MemoryMappingList *list); + +void guest_phys_blocks_free(GuestPhysBlockList *list); +void guest_phys_blocks_init(GuestPhysBlockList *list); +void guest_phys_blocks_append(GuestPhysBlockList *list); + +bool qemu_get_guest_memory_mapping(MemoryMappingList *list, + const GuestPhysBlockList *guest_phys_blocks, + Error **errp); + +/* get guest's memory mapping without do paging(virtual address is 0). */ +void qemu_get_guest_simple_memory_mapping(MemoryMappingList *list, + const GuestPhysBlockList *guest_phys_blocks); + +void memory_mapping_filter(MemoryMappingList *list, int64_t begin, + int64_t length); + +#endif |