/* * 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 "qemu/typedefs.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; QTAILQ_ENTRY(GuestPhysBlock) next; } GuestPhysBlock; /* point-in-time snapshot of guest-visible physical mappings */ typedef struct GuestPhysBlockList { unsigned num; QTAILQ_HEAD(GuestPhysBlockHead, GuestPhysBlock) head; } GuestPhysBlockList; /* The physical and virtual address in the memory mapping are contiguous. */ typedef struct MemoryMapping { hwaddr phys_addr; target_ulong 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); void 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