xref: /device/qemu/drivers/char/mmz/mmz.h (revision d6aed566) 
1/*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 *    conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 *    of conditions and the following disclaimer in the documentation and/or other materials
13 *    provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 *    to endorse or promote products derived from this software without specific prior written
17 *    permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef __MMZ_H__
33#define __MMZ_H__
34
35#include "los_typedef.h"
36#include "sys/ioctl.h"
37
38typedef enum {
39    MMZ_CACHE = 1,                  /* allocate mmz with cache attribute */
40    MMZ_NOCACHE,                    /* allocate mmz with nocache attribute */
41    MMZ_FREE,                       /* free mmz */
42    MAP_CACHE,
43    MAP_NOCACHE,
44    UNMAP,
45    FLUSH_CACHE,
46    FLUSH_NOCACHE,
47    INVALIDATE,
48    MMZ_MAX
49} MMZ_TYPE;
50
51typedef struct {
52    void *vaddr;
53    uint64_t paddr;
54    int32_t size;
55} MmzMemory;
56
57#define MMZ_IOC_MAGIC               'M'
58#define MMZ_CACHE_TYPE              _IOR(MMZ_IOC_MAGIC, MMZ_CACHE, MmzMemory)
59#define MMZ_NOCACHE_TYPE            _IOR(MMZ_IOC_MAGIC, MMZ_NOCACHE, MmzMemory)
60#define MMZ_FREE_TYPE               _IOR(MMZ_IOC_MAGIC, MMZ_FREE, MmzMemory)
61#define MMZ_MAP_CACHE_TYPE          _IOR(MMZ_IOC_MAGIC, MAP_CACHE, MmzMemory)
62#define MMZ_MAP_NOCACHE_TYPE        _IOR(MMZ_IOC_MAGIC, MAP_NOCACHE, MmzMemory)
63#define MMZ_UNMAP_TYPE              _IOR(MMZ_IOC_MAGIC, UNMAP, MmzMemory)
64#define MMZ_FLUSH_CACHE_TYPE        _IOR(MMZ_IOC_MAGIC, FLUSH_CACHE, MmzMemory)
65#define MMZ_FLUSH_NOCACHE_TYPE      _IOR(MMZ_IOC_MAGIC, FLUSH_NOCACHE, MmzMemory)
66#define MMZ_INVALIDATE_TYPE         _IOR(MMZ_IOC_MAGIC, INVALIDATE, MmzMemory)
67
68#define MMZ_NODE                    "/dev/mmz"
69
70int DevMmzRegister(void);
71
72#endif
73