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https://github.com/openharmony/tee_tee_tzdriver.git
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袁浩
39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/*
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* reserved_mempool.h
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*
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* reserved memory managing for sharing memory with TEE.
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*
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* Copyright (C) 2022 Huawei Technologies Co., Ltd.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef RESERVED_MEMPOOOL_H
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#define RESERVED_MEMPOOOL_H
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#include <linux/kernel.h>
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#include <linux/types.h>
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#ifndef CONFIG_MAX_RES_MEM_ORDER
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#define CONFIG_MAX_RES_MEM_ORDER 15
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#endif
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#define RESERVED_MEM_POOL_SIZE 0x8000000 //128M
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#define RESEVED_MAX_ALLOC_SIZE (1 << (CONFIG_MAX_RES_MEM_ORDER + PAGE_SHIFT)) //2^max_order * 4K
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#define LIMIT_RES_MEM_ORDER 15
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int load_reserved_mem(void);
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void *reserved_mem_alloc(size_t size);
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void free_reserved_mempool(void);
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int reserved_mempool_init(void);
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void reserved_mem_free(const void *ptr);
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bool exist_res_mem(void);
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unsigned long res_mem_virt_to_phys(unsigned long vaddr);
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#endif
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