1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #ifndef __ADDRESS_SPACE_STREAM_H 17 #define __ADDRESS_SPACE_STREAM_H 18 19 #include "VirtGpu.h" 20 #include "address_space.h" 21 #include "address_space_graphics_types.h" 22 #include "aemu/base/AndroidHealthMonitor.h" 23 #include "gfxstream/guest/IOStream.h" 24 25 using gfxstream::guest::HealthMonitor; 26 using gfxstream::guest::IOStream; 27 28 class AddressSpaceStream : public IOStream { 29 public: 30 explicit AddressSpaceStream( 31 address_space_handle_t handle, 32 uint32_t version, 33 struct asg_context context, 34 uint64_t ringOffset, 35 uint64_t writeBufferOffset, 36 struct address_space_ops ops, 37 HealthMonitor<>* healthMonitor); 38 ~AddressSpaceStream(); 39 40 virtual size_t idealAllocSize(size_t len); 41 virtual void *allocBuffer(size_t minSize); 42 virtual int commitBuffer(size_t size); 43 virtual const unsigned char *readFully( void *buf, size_t len); 44 virtual const unsigned char *read( void *buf, size_t *inout_len); 45 virtual int writeFully(const void *buf, size_t len); 46 virtual int writeFullyAsync(const void *buf, size_t len); 47 virtual const unsigned char *commitBufferAndReadFully(size_t size, void *buf, size_t len); 48 setMapping(VirtGpuBlobMappingPtr mapping)49 void setMapping(VirtGpuBlobMappingPtr mapping) { 50 m_mapping = mapping; 51 } 52 setResourceId(uint32_t id)53 void setResourceId(uint32_t id) { 54 m_resourceId = id; 55 } 56 57 private: 58 bool isInError() const; 59 ssize_t speculativeRead(unsigned char* readBuffer, size_t trySize); 60 void notifyAvailable(); 61 uint32_t getRelativeBufferPos(uint32_t pos); 62 void advanceWrite(); 63 void ensureConsumerFinishing(); 64 void ensureType1Finished(); 65 void ensureType3Finished(); 66 int type1Write(uint32_t offset, size_t size); 67 68 void backoff(); 69 void resetBackoff(); 70 71 VirtGpuBlobMappingPtr m_mapping = nullptr; 72 struct address_space_ops m_ops; 73 74 unsigned char* m_tmpBuf; 75 size_t m_tmpBufSize; 76 size_t m_tmpBufXferSize; 77 bool m_usingTmpBuf; 78 79 unsigned char* m_readBuf; 80 size_t m_read; 81 size_t m_readLeft; 82 83 address_space_handle_t m_handle; 84 uint32_t m_version; 85 struct asg_context m_context; 86 87 uint64_t m_ringOffset; 88 uint64_t m_writeBufferOffset; 89 90 uint32_t m_writeBufferSize; 91 uint32_t m_writeBufferMask; 92 unsigned char* m_buf; 93 unsigned char* m_writeStart; 94 uint32_t m_writeStep; 95 96 uint32_t m_notifs; 97 uint32_t m_written; 98 99 uint64_t m_backoffIters; 100 uint64_t m_backoffFactor; 101 102 size_t m_ringStorageSize; 103 uint32_t m_resourceId = 0; 104 105 HealthMonitor<>* m_healthMonitor; 106 }; 107 108 #endif 109