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. See 10 * 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 #ifndef CONFIG_USER_ONLY 20 /* The physical and virtual address in the memory mapping are contiguous. */ 21 typedef struct MemoryMapping { 22 target_phys_addr_t phys_addr; 23 target_ulong virt_addr; 24 ram_addr_t length; 25 QTAILQ_ENTRY(MemoryMapping) next; 26 } MemoryMapping; 27 28 typedef struct MemoryMappingList { 29 unsigned int num; 30 MemoryMapping *last_mapping; 31 QTAILQ_HEAD(, MemoryMapping) head; 32 } MemoryMappingList; 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 target_phys_addr_t phys_addr, 41 target_phys_addr_t 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 /* 49 * Return value: 50 * 0: success 51 * -1: failed 52 * -2: unsupported 53 */ 54 #if defined(CONFIG_HAVE_GET_MEMORY_MAPPING) 55 int qemu_get_guest_memory_mapping(MemoryMappingList *list); 56 #else 57 static inline int qemu_get_guest_memory_mapping(MemoryMappingList *list) 58 { 59 return -2; 60 } 61 #endif 62 63 /* get guest's memory mapping without do paging(virtual address is 0). */ 64 void qemu_get_guest_simple_memory_mapping(MemoryMappingList *list); 65 66 void memory_mapping_filter(MemoryMappingList *list, int64_t begin, 67 int64_t length); 68 69 #else 70 71 /* We use MemoryMappingList* in cpu-all.h */ 72 typedef struct MemoryMappingList MemoryMappingList; 73 #endif 74 #endif 75