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 38 typedef 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 51 typedef 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 70 int DevMmzRegister(void); 71 72 #endif 73