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