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/*

 * 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. See

 * the COPYING file in the top-level directory.

 *

 */

#ifndef MEMORY_MAPPING_H

#define MEMORY_MAPPING_H

#include "qemu-queue.h"

#ifndef CONFIG_USER_ONLY

/* The physical and virtual address in the memory mapping are contiguous. */

typedef struct MemoryMapping {

    target_phys_addr_t phys_addr;

    target_ulong virt_addr;

    ram_addr_t length;

    QTAILQ_ENTRY(MemoryMapping) next;

} MemoryMapping;

typedef struct MemoryMappingList {

    unsigned int num;

    MemoryMapping *last_mapping;

    QTAILQ_HEAD(, MemoryMapping) head;

} MemoryMappingList;

/*

 * 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,

                                          target_phys_addr_t phys_addr,

                                          target_phys_addr_t virt_addr,

                                          ram_addr_t length);

void memory_mapping_list_free(MemoryMappingList *list);

void memory_mapping_list_init(MemoryMappingList *list);

/*

 * Return value:

 *    0: success

 *   -1: failed

 *   -2: unsupported

 */

#if defined(CONFIG_HAVE_GET_MEMORY_MAPPING)

int qemu_get_guest_memory_mapping(MemoryMappingList *list);

#else

static inline int qemu_get_guest_memory_mapping(MemoryMappingList *list)

{

    return -2;

}

#endif

/* get guest's memory mapping without do paging(virtual address is 0). */

void qemu_get_guest_simple_memory_mapping(MemoryMappingList *list);

void memory_mapping_filter(MemoryMappingList *list, int64_t begin,

                           int64_t length);

#else

/* We use MemoryMappingList* in cpu-all.h */

typedef struct MemoryMappingList MemoryMappingList;

#endif

#endif