1 #ifndef _G_VIRTUAL_MEM_NVOC_H_
2 #define _G_VIRTUAL_MEM_NVOC_H_
3 #include "nvoc/runtime.h"
4 
5 #ifdef __cplusplus
6 extern "C" {
7 #endif
8 
9 /*
10  * SPDX-FileCopyrightText: Copyright (c) 2020-2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
11  * SPDX-License-Identifier: MIT
12  *
13  * Permission is hereby granted, free of charge, to any person obtaining a
14  * copy of this software and associated documentation files (the "Software"),
15  * to deal in the Software without restriction, including without limitation
16  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
17  * and/or sell copies of the Software, and to permit persons to whom the
18  * Software is furnished to do so, subject to the following conditions:
19  *
20  * The above copyright notice and this permission notice shall be included in
21  * all copies or substantial portions of the Software.
22  *
23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
24  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
26  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
27  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
28  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
29  * DEALINGS IN THE SOFTWARE.
30  */
31 
32 #include "g_virtual_mem_nvoc.h"
33 
34 #ifndef _VIRTUAL_MEMORY_H_
35 #define _VIRTUAL_MEMORY_H_
36 
37 #include "mem_mgr/standard_mem.h"
38 #include "gpu/mem_mgr/heap_base.h"
39 
40 /*!
41  * Allocator for NV50_MEMORY_VIRTUAL class.
42  *
43  * Describes a range of typed virtual memory.  Used as
44  * a target space for RmMapMemoryDma.
45  *
46  * The NV01_MEMORY_VIRTUAL subclass class is typeless.
47  */
48 #ifdef NVOC_VIRTUAL_MEM_H_PRIVATE_ACCESS_ALLOWED
49 #define PRIVATE_FIELD(x) x
50 #else
51 #define PRIVATE_FIELD(x) NVOC_PRIVATE_FIELD(x)
52 #endif
53 struct VirtualMemory {
54     const struct NVOC_RTTI *__nvoc_rtti;
55     struct StandardMemory __nvoc_base_StandardMemory;
56     struct Object *__nvoc_pbase_Object;
57     struct RsResource *__nvoc_pbase_RsResource;
58     struct RmResourceCommon *__nvoc_pbase_RmResourceCommon;
59     struct RmResource *__nvoc_pbase_RmResource;
60     struct Memory *__nvoc_pbase_Memory;
61     struct StandardMemory *__nvoc_pbase_StandardMemory;
62     struct VirtualMemory *__nvoc_pbase_VirtualMemory;
63     NV_STATUS (*__virtmemMapTo__)(struct VirtualMemory *, struct RS_RES_MAP_TO_PARAMS *);
64     NV_STATUS (*__virtmemUnmapFrom__)(struct VirtualMemory *, struct RS_RES_UNMAP_FROM_PARAMS *);
65     NV_STATUS (*__virtmemCheckMemInterUnmap__)(struct VirtualMemory *, NvBool);
66     NvBool (*__virtmemShareCallback__)(struct VirtualMemory *, struct RsClient *, struct RsResourceRef *, RS_SHARE_POLICY *);
67     NV_STATUS (*__virtmemGetMapAddrSpace__)(struct VirtualMemory *, CALL_CONTEXT *, NvU32, NV_ADDRESS_SPACE *);
68     NvU32 (*__virtmemGetRefCount__)(struct VirtualMemory *);
69     void (*__virtmemAddAdditionalDependants__)(struct RsClient *, struct VirtualMemory *, RsResourceRef *);
70     NV_STATUS (*__virtmemControl_Prologue__)(struct VirtualMemory *, CALL_CONTEXT *, struct RS_RES_CONTROL_PARAMS_INTERNAL *);
71     NvBool (*__virtmemIsGpuMapAllowed__)(struct VirtualMemory *, struct OBJGPU *);
72     void (*__virtmemControl_Epilogue__)(struct VirtualMemory *, CALL_CONTEXT *, struct RS_RES_CONTROL_PARAMS_INTERNAL *);
73     NV_STATUS (*__virtmemControlLookup__)(struct VirtualMemory *, struct RS_RES_CONTROL_PARAMS_INTERNAL *, const struct NVOC_EXPORTED_METHOD_DEF **);
74     NV_STATUS (*__virtmemControl__)(struct VirtualMemory *, CALL_CONTEXT *, struct RS_RES_CONTROL_PARAMS_INTERNAL *);
75     NV_STATUS (*__virtmemUnmap__)(struct VirtualMemory *, CALL_CONTEXT *, RsCpuMapping *);
76     NV_STATUS (*__virtmemGetMemInterMapParams__)(struct VirtualMemory *, RMRES_MEM_INTER_MAP_PARAMS *);
77     NV_STATUS (*__virtmemGetMemoryMappingDescriptor__)(struct VirtualMemory *, MEMORY_DESCRIPTOR **);
78     NV_STATUS (*__virtmemControlFilter__)(struct VirtualMemory *, struct CALL_CONTEXT *, struct RS_RES_CONTROL_PARAMS_INTERNAL *);
79     NV_STATUS (*__virtmemControlSerialization_Prologue__)(struct VirtualMemory *, CALL_CONTEXT *, struct RS_RES_CONTROL_PARAMS_INTERNAL *);
80     NvBool (*__virtmemCanCopy__)(struct VirtualMemory *);
81     NV_STATUS (*__virtmemIsReady__)(struct VirtualMemory *, NvBool);
82     NV_STATUS (*__virtmemCheckCopyPermissions__)(struct VirtualMemory *, struct OBJGPU *, NvHandle);
83     void (*__virtmemPreDestruct__)(struct VirtualMemory *);
84     NV_STATUS (*__virtmemIsDuplicate__)(struct VirtualMemory *, NvHandle, NvBool *);
85     void (*__virtmemControlSerialization_Epilogue__)(struct VirtualMemory *, CALL_CONTEXT *, struct RS_RES_CONTROL_PARAMS_INTERNAL *);
86     NV_STATUS (*__virtmemMap__)(struct VirtualMemory *, CALL_CONTEXT *, struct RS_CPU_MAP_PARAMS *, RsCpuMapping *);
87     NvBool (*__virtmemAccessCallback__)(struct VirtualMemory *, struct RsClient *, void *, RsAccessRight);
88     NvHandle hVASpace;
89     NvBool bAllowUnicastMapping;
90     NvBool bReserveVaOnAlloc;
91     NvBool bFlaVAS;
92     NvBool bRpcAlloc;
93     NODE *pDmaMappingList;
94     NvBool bOptimizePageTableMempoolUsage;
95 };
96 
97 #ifndef __NVOC_CLASS_VirtualMemory_TYPEDEF__
98 #define __NVOC_CLASS_VirtualMemory_TYPEDEF__
99 typedef struct VirtualMemory VirtualMemory;
100 #endif /* __NVOC_CLASS_VirtualMemory_TYPEDEF__ */
101 
102 #ifndef __nvoc_class_id_VirtualMemory
103 #define __nvoc_class_id_VirtualMemory 0x2aea5c
104 #endif /* __nvoc_class_id_VirtualMemory */
105 
106 extern const struct NVOC_CLASS_DEF __nvoc_class_def_VirtualMemory;
107 
108 #define __staticCast_VirtualMemory(pThis) \
109     ((pThis)->__nvoc_pbase_VirtualMemory)
110 
111 #ifdef __nvoc_virtual_mem_h_disabled
112 #define __dynamicCast_VirtualMemory(pThis) ((VirtualMemory*)NULL)
113 #else //__nvoc_virtual_mem_h_disabled
114 #define __dynamicCast_VirtualMemory(pThis) \
115     ((VirtualMemory*)__nvoc_dynamicCast(staticCast((pThis), Dynamic), classInfo(VirtualMemory)))
116 #endif //__nvoc_virtual_mem_h_disabled
117 
118 
119 NV_STATUS __nvoc_objCreateDynamic_VirtualMemory(VirtualMemory**, Dynamic*, NvU32, va_list);
120 
121 NV_STATUS __nvoc_objCreate_VirtualMemory(VirtualMemory**, Dynamic*, NvU32, CALL_CONTEXT * arg_pCallContext, struct RS_RES_ALLOC_PARAMS_INTERNAL * arg_pParams);
122 #define __objCreate_VirtualMemory(ppNewObj, pParent, createFlags, arg_pCallContext, arg_pParams) \
123     __nvoc_objCreate_VirtualMemory((ppNewObj), staticCast((pParent), Dynamic), (createFlags), arg_pCallContext, arg_pParams)
124 
125 #define virtmemMapTo(pVirtualMemory, pParams) virtmemMapTo_DISPATCH(pVirtualMemory, pParams)
126 #define virtmemUnmapFrom(pVirtualMemory, pParams) virtmemUnmapFrom_DISPATCH(pVirtualMemory, pParams)
127 #define virtmemCheckMemInterUnmap(pMemory, bSubdeviceHandleProvided) virtmemCheckMemInterUnmap_DISPATCH(pMemory, bSubdeviceHandleProvided)
128 #define virtmemShareCallback(pResource, pInvokingClient, pParentRef, pSharePolicy) virtmemShareCallback_DISPATCH(pResource, pInvokingClient, pParentRef, pSharePolicy)
129 #define virtmemGetMapAddrSpace(pMemory, pCallContext, mapFlags, pAddrSpace) virtmemGetMapAddrSpace_DISPATCH(pMemory, pCallContext, mapFlags, pAddrSpace)
130 #define virtmemGetRefCount(pResource) virtmemGetRefCount_DISPATCH(pResource)
131 #define virtmemAddAdditionalDependants(pClient, pResource, pReference) virtmemAddAdditionalDependants_DISPATCH(pClient, pResource, pReference)
132 #define virtmemControl_Prologue(pResource, pCallContext, pParams) virtmemControl_Prologue_DISPATCH(pResource, pCallContext, pParams)
133 #define virtmemIsGpuMapAllowed(pMemory, pGpu) virtmemIsGpuMapAllowed_DISPATCH(pMemory, pGpu)
134 #define virtmemControl_Epilogue(pResource, pCallContext, pParams) virtmemControl_Epilogue_DISPATCH(pResource, pCallContext, pParams)
135 #define virtmemControlLookup(pResource, pParams, ppEntry) virtmemControlLookup_DISPATCH(pResource, pParams, ppEntry)
136 #define virtmemControl(pMemory, pCallContext, pParams) virtmemControl_DISPATCH(pMemory, pCallContext, pParams)
137 #define virtmemUnmap(pMemory, pCallContext, pCpuMapping) virtmemUnmap_DISPATCH(pMemory, pCallContext, pCpuMapping)
138 #define virtmemGetMemInterMapParams(pMemory, pParams) virtmemGetMemInterMapParams_DISPATCH(pMemory, pParams)
139 #define virtmemGetMemoryMappingDescriptor(pMemory, ppMemDesc) virtmemGetMemoryMappingDescriptor_DISPATCH(pMemory, ppMemDesc)
140 #define virtmemControlFilter(pResource, pCallContext, pParams) virtmemControlFilter_DISPATCH(pResource, pCallContext, pParams)
141 #define virtmemControlSerialization_Prologue(pResource, pCallContext, pParams) virtmemControlSerialization_Prologue_DISPATCH(pResource, pCallContext, pParams)
142 #define virtmemCanCopy(pStandardMemory) virtmemCanCopy_DISPATCH(pStandardMemory)
143 #define virtmemIsReady(pMemory, bCopyConstructorContext) virtmemIsReady_DISPATCH(pMemory, bCopyConstructorContext)
144 #define virtmemCheckCopyPermissions(pMemory, pDstGpu, hDstClientNvBool) virtmemCheckCopyPermissions_DISPATCH(pMemory, pDstGpu, hDstClientNvBool)
145 #define virtmemPreDestruct(pResource) virtmemPreDestruct_DISPATCH(pResource)
146 #define virtmemIsDuplicate(pMemory, hMemory, pDuplicate) virtmemIsDuplicate_DISPATCH(pMemory, hMemory, pDuplicate)
147 #define virtmemControlSerialization_Epilogue(pResource, pCallContext, pParams) virtmemControlSerialization_Epilogue_DISPATCH(pResource, pCallContext, pParams)
148 #define virtmemMap(pMemory, pCallContext, pParams, pCpuMapping) virtmemMap_DISPATCH(pMemory, pCallContext, pParams, pCpuMapping)
149 #define virtmemAccessCallback(pResource, pInvokingClient, pAllocParams, accessRight) virtmemAccessCallback_DISPATCH(pResource, pInvokingClient, pAllocParams, accessRight)
150 NV_STATUS virtmemMapTo_IMPL(struct VirtualMemory *pVirtualMemory, struct RS_RES_MAP_TO_PARAMS *pParams);
151 
152 static inline NV_STATUS virtmemMapTo_DISPATCH(struct VirtualMemory *pVirtualMemory, struct RS_RES_MAP_TO_PARAMS *pParams) {
153     return pVirtualMemory->__virtmemMapTo__(pVirtualMemory, pParams);
154 }
155 
156 NV_STATUS virtmemUnmapFrom_IMPL(struct VirtualMemory *pVirtualMemory, struct RS_RES_UNMAP_FROM_PARAMS *pParams);
157 
158 static inline NV_STATUS virtmemUnmapFrom_DISPATCH(struct VirtualMemory *pVirtualMemory, struct RS_RES_UNMAP_FROM_PARAMS *pParams) {
159     return pVirtualMemory->__virtmemUnmapFrom__(pVirtualMemory, pParams);
160 }
161 
162 static inline NV_STATUS virtmemCheckMemInterUnmap_DISPATCH(struct VirtualMemory *pMemory, NvBool bSubdeviceHandleProvided) {
163     return pMemory->__virtmemCheckMemInterUnmap__(pMemory, bSubdeviceHandleProvided);
164 }
165 
166 static inline NvBool virtmemShareCallback_DISPATCH(struct VirtualMemory *pResource, struct RsClient *pInvokingClient, struct RsResourceRef *pParentRef, RS_SHARE_POLICY *pSharePolicy) {
167     return pResource->__virtmemShareCallback__(pResource, pInvokingClient, pParentRef, pSharePolicy);
168 }
169 
170 static inline NV_STATUS virtmemGetMapAddrSpace_DISPATCH(struct VirtualMemory *pMemory, CALL_CONTEXT *pCallContext, NvU32 mapFlags, NV_ADDRESS_SPACE *pAddrSpace) {
171     return pMemory->__virtmemGetMapAddrSpace__(pMemory, pCallContext, mapFlags, pAddrSpace);
172 }
173 
174 static inline NvU32 virtmemGetRefCount_DISPATCH(struct VirtualMemory *pResource) {
175     return pResource->__virtmemGetRefCount__(pResource);
176 }
177 
178 static inline void virtmemAddAdditionalDependants_DISPATCH(struct RsClient *pClient, struct VirtualMemory *pResource, RsResourceRef *pReference) {
179     pResource->__virtmemAddAdditionalDependants__(pClient, pResource, pReference);
180 }
181 
182 static inline NV_STATUS virtmemControl_Prologue_DISPATCH(struct VirtualMemory *pResource, CALL_CONTEXT *pCallContext, struct RS_RES_CONTROL_PARAMS_INTERNAL *pParams) {
183     return pResource->__virtmemControl_Prologue__(pResource, pCallContext, pParams);
184 }
185 
186 static inline NvBool virtmemIsGpuMapAllowed_DISPATCH(struct VirtualMemory *pMemory, struct OBJGPU *pGpu) {
187     return pMemory->__virtmemIsGpuMapAllowed__(pMemory, pGpu);
188 }
189 
190 static inline void virtmemControl_Epilogue_DISPATCH(struct VirtualMemory *pResource, CALL_CONTEXT *pCallContext, struct RS_RES_CONTROL_PARAMS_INTERNAL *pParams) {
191     pResource->__virtmemControl_Epilogue__(pResource, pCallContext, pParams);
192 }
193 
194 static inline NV_STATUS virtmemControlLookup_DISPATCH(struct VirtualMemory *pResource, struct RS_RES_CONTROL_PARAMS_INTERNAL *pParams, const struct NVOC_EXPORTED_METHOD_DEF **ppEntry) {
195     return pResource->__virtmemControlLookup__(pResource, pParams, ppEntry);
196 }
197 
198 static inline NV_STATUS virtmemControl_DISPATCH(struct VirtualMemory *pMemory, CALL_CONTEXT *pCallContext, struct RS_RES_CONTROL_PARAMS_INTERNAL *pParams) {
199     return pMemory->__virtmemControl__(pMemory, pCallContext, pParams);
200 }
201 
202 static inline NV_STATUS virtmemUnmap_DISPATCH(struct VirtualMemory *pMemory, CALL_CONTEXT *pCallContext, RsCpuMapping *pCpuMapping) {
203     return pMemory->__virtmemUnmap__(pMemory, pCallContext, pCpuMapping);
204 }
205 
206 static inline NV_STATUS virtmemGetMemInterMapParams_DISPATCH(struct VirtualMemory *pMemory, RMRES_MEM_INTER_MAP_PARAMS *pParams) {
207     return pMemory->__virtmemGetMemInterMapParams__(pMemory, pParams);
208 }
209 
210 static inline NV_STATUS virtmemGetMemoryMappingDescriptor_DISPATCH(struct VirtualMemory *pMemory, MEMORY_DESCRIPTOR **ppMemDesc) {
211     return pMemory->__virtmemGetMemoryMappingDescriptor__(pMemory, ppMemDesc);
212 }
213 
214 static inline NV_STATUS virtmemControlFilter_DISPATCH(struct VirtualMemory *pResource, struct CALL_CONTEXT *pCallContext, struct RS_RES_CONTROL_PARAMS_INTERNAL *pParams) {
215     return pResource->__virtmemControlFilter__(pResource, pCallContext, pParams);
216 }
217 
218 static inline NV_STATUS virtmemControlSerialization_Prologue_DISPATCH(struct VirtualMemory *pResource, CALL_CONTEXT *pCallContext, struct RS_RES_CONTROL_PARAMS_INTERNAL *pParams) {
219     return pResource->__virtmemControlSerialization_Prologue__(pResource, pCallContext, pParams);
220 }
221 
222 static inline NvBool virtmemCanCopy_DISPATCH(struct VirtualMemory *pStandardMemory) {
223     return pStandardMemory->__virtmemCanCopy__(pStandardMemory);
224 }
225 
226 static inline NV_STATUS virtmemIsReady_DISPATCH(struct VirtualMemory *pMemory, NvBool bCopyConstructorContext) {
227     return pMemory->__virtmemIsReady__(pMemory, bCopyConstructorContext);
228 }
229 
230 static inline NV_STATUS virtmemCheckCopyPermissions_DISPATCH(struct VirtualMemory *pMemory, struct OBJGPU *pDstGpu, NvHandle hDstClientNvBool) {
231     return pMemory->__virtmemCheckCopyPermissions__(pMemory, pDstGpu, hDstClientNvBool);
232 }
233 
234 static inline void virtmemPreDestruct_DISPATCH(struct VirtualMemory *pResource) {
235     pResource->__virtmemPreDestruct__(pResource);
236 }
237 
238 static inline NV_STATUS virtmemIsDuplicate_DISPATCH(struct VirtualMemory *pMemory, NvHandle hMemory, NvBool *pDuplicate) {
239     return pMemory->__virtmemIsDuplicate__(pMemory, hMemory, pDuplicate);
240 }
241 
242 static inline void virtmemControlSerialization_Epilogue_DISPATCH(struct VirtualMemory *pResource, CALL_CONTEXT *pCallContext, struct RS_RES_CONTROL_PARAMS_INTERNAL *pParams) {
243     pResource->__virtmemControlSerialization_Epilogue__(pResource, pCallContext, pParams);
244 }
245 
246 static inline NV_STATUS virtmemMap_DISPATCH(struct VirtualMemory *pMemory, CALL_CONTEXT *pCallContext, struct RS_CPU_MAP_PARAMS *pParams, RsCpuMapping *pCpuMapping) {
247     return pMemory->__virtmemMap__(pMemory, pCallContext, pParams, pCpuMapping);
248 }
249 
250 static inline NvBool virtmemAccessCallback_DISPATCH(struct VirtualMemory *pResource, struct RsClient *pInvokingClient, void *pAllocParams, RsAccessRight accessRight) {
251     return pResource->__virtmemAccessCallback__(pResource, pInvokingClient, pAllocParams, accessRight);
252 }
253 
254 NV_STATUS virtmemConstruct_IMPL(struct VirtualMemory *arg_pVirtualMemory, CALL_CONTEXT *arg_pCallContext, struct RS_RES_ALLOC_PARAMS_INTERNAL *arg_pParams);
255 
256 #define __nvoc_virtmemConstruct(arg_pVirtualMemory, arg_pCallContext, arg_pParams) virtmemConstruct_IMPL(arg_pVirtualMemory, arg_pCallContext, arg_pParams)
257 void virtmemDestruct_IMPL(struct VirtualMemory *pVirtualMemory);
258 
259 #define __nvoc_virtmemDestruct(pVirtualMemory) virtmemDestruct_IMPL(pVirtualMemory)
260 NV_STATUS virtmemReserveMempool_IMPL(struct VirtualMemory *pVirtualMemory, struct OBJGPU *arg0, NvHandle hDevice, NvU64 size, NvU64 pageSizeMask);
261 
262 #ifdef __nvoc_virtual_mem_h_disabled
263 static inline NV_STATUS virtmemReserveMempool(struct VirtualMemory *pVirtualMemory, struct OBJGPU *arg0, NvHandle hDevice, NvU64 size, NvU64 pageSizeMask) {
264     NV_ASSERT_FAILED_PRECOMP("VirtualMemory was disabled!");
265     return NV_ERR_NOT_SUPPORTED;
266 }
267 #else //__nvoc_virtual_mem_h_disabled
268 #define virtmemReserveMempool(pVirtualMemory, arg0, hDevice, size, pageSizeMask) virtmemReserveMempool_IMPL(pVirtualMemory, arg0, hDevice, size, pageSizeMask)
269 #endif //__nvoc_virtual_mem_h_disabled
270 
271 NvBool virtmemMatchesVASpace_IMPL(struct VirtualMemory *pVirtualMemory, NvHandle hClient, NvHandle hVASpace);
272 
273 #ifdef __nvoc_virtual_mem_h_disabled
274 static inline NvBool virtmemMatchesVASpace(struct VirtualMemory *pVirtualMemory, NvHandle hClient, NvHandle hVASpace) {
275     NV_ASSERT_FAILED_PRECOMP("VirtualMemory was disabled!");
276     return NV_FALSE;
277 }
278 #else //__nvoc_virtual_mem_h_disabled
279 #define virtmemMatchesVASpace(pVirtualMemory, hClient, hVASpace) virtmemMatchesVASpace_IMPL(pVirtualMemory, hClient, hVASpace)
280 #endif //__nvoc_virtual_mem_h_disabled
281 
282 NV_STATUS virtmemGetByHandleAndDevice_IMPL(struct RsClient *pClient, NvHandle hMemory, NvHandle hDevice, struct VirtualMemory **ppVirtualMemory);
283 
284 #define virtmemGetByHandleAndDevice(pClient, hMemory, hDevice, ppVirtualMemory) virtmemGetByHandleAndDevice_IMPL(pClient, hMemory, hDevice, ppVirtualMemory)
285 void virtmemGetAddressAndSize_IMPL(struct VirtualMemory *arg0, NvU64 *pVAddr, NvU64 *pSize);
286 
287 #define virtmemGetAddressAndSize(arg0, pVAddr, pSize) virtmemGetAddressAndSize_IMPL(arg0, pVAddr, pSize)
288 #undef PRIVATE_FIELD
289 
290 
291 NV_STATUS virtmemAllocResources(OBJGPU *pGpu, struct MemoryManager *pMemoryManager, MEMORY_ALLOCATION_REQUEST *pAllocRequest,
292                                 FB_ALLOC_INFO *pFbAllocInfo);
293 
294 #endif
295 
296 #ifdef __cplusplus
297 } // extern "C"
298 #endif
299 #endif // _G_VIRTUAL_MEM_NVOC_H_
300