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 /** 33 * @defgroup los_arch_mmu architecture mmu 34 * @ingroup kernel 35 */ 36 37 #ifndef __LOS_ARCH_MMU_H__ 38 #define __LOS_ARCH_MMU_H__ 39 40 #include "los_typedef.h" 41 #include "los_vm_phys.h" 42 #ifndef LOSCFG_PAGE_TABLE_FINE_LOCK 43 #include "los_spinlock.h" 44 #endif 45 46 #ifdef __cplusplus 47 #if __cplusplus 48 extern "C" { 49 #endif /* __cplusplus */ 50 #endif /* __cplusplus */ 51 52 typedef struct ArchMmu { 53 #ifndef LOSCFG_PAGE_TABLE_FINE_LOCK 54 SPIN_LOCK_S lock; /**< arch mmu page table entry modification spin lock */ 55 #endif 56 VADDR_T *virtTtb; /**< translation table base virtual addr */ 57 PADDR_T physTtb; /**< translation table base phys addr */ 58 UINT32 asid; /**< TLB asid */ 59 LOS_DL_LIST ptList; /**< page table vm page list */ 60 } LosArchMmu; 61 62 BOOL OsArchMmuInit(LosArchMmu *archMmu, VADDR_T *virtTtb); 63 STATUS_T LOS_ArchMmuQuery(const LosArchMmu *archMmu, VADDR_T vaddr, PADDR_T *paddr, UINT32 *flags); 64 STATUS_T LOS_ArchMmuUnmap(LosArchMmu *archMmu, VADDR_T vaddr, size_t count); 65 STATUS_T LOS_ArchMmuMap(LosArchMmu *archMmu, VADDR_T vaddr, PADDR_T paddr, size_t count, UINT32 flags); 66 STATUS_T LOS_ArchMmuChangeProt(LosArchMmu *archMmu, VADDR_T vaddr, size_t count, UINT32 flags); 67 STATUS_T LOS_ArchMmuMove(LosArchMmu *archMmu, VADDR_T oldVaddr, VADDR_T newVaddr, size_t count, UINT32 flags); 68 VOID LOS_ArchMmuContextSwitch(LosArchMmu *archMmu); 69 STATUS_T LOS_ArchMmuDestroy(LosArchMmu *archMmu); 70 VOID OsArchMmuInitPerCPU(VOID); 71 VADDR_T *OsGFirstTableGet(VOID); 72 73 #ifdef __cplusplus 74 #if __cplusplus 75 } 76 #endif /* __cplusplus */ 77 #endif /* __cplusplus */ 78 79 #endif /* __LOS_ARCH_MMU_H__ */ 80 81