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 __LOS_VM_PAGE_H__ 33 #define __LOS_VM_PAGE_H__ 34 35 #include "los_typedef.h" 36 #include "los_bitmap.h" 37 #include "los_list.h" 38 #include "los_atomic.h" 39 #include "los_spinlock.h" 40 41 #ifdef __cplusplus 42 #if __cplusplus 43 extern "C" { 44 #endif /* __cplusplus */ 45 #endif /* __cplusplus */ 46 47 typedef struct VmPage { 48 LOS_DL_LIST node; /**< vm object dl list */ 49 PADDR_T physAddr; /**< vm page physical addr */ 50 Atomic refCounts; /**< vm page ref count */ 51 UINT32 flags; /**< vm page flags */ 52 UINT8 order; /**< vm page in which order list */ 53 UINT8 segID; /**< the segment id of vm page */ 54 UINT16 nPages; /**< the vm page is used for kernel heap */ 55 #ifdef LOSCFG_PAGE_TABLE_FINE_LOCK 56 SPIN_LOCK_S lock; /**< lock for page table entry */ 57 #endif 58 } LosVmPage; 59 60 extern LosVmPage *g_vmPageArray; 61 extern size_t g_vmPageArraySize; 62 63 LosVmPage *LOS_VmPageGet(PADDR_T paddr); 64 VOID OsVmPageStartup(VOID); 65 66 #ifdef __cplusplus 67 #if __cplusplus 68 } 69 #endif /* __cplusplus */ 70 #endif /* __cplusplus */ 71 72 #endif /* __LOS_VM_PAGE_H__ */ 73