/*
* 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);
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
