e2ce077280f1c26ea1e260972923bebd9edf6a2c
1 /******************************************************************************
2 * Copyright (c) 2017-18 Texas Instruments Incorporated - http://www.ti.com/
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of Texas Instruments Incorporated nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
26 * THE POSSIBILITY OF SUCH DAMAGE.
27 *****************************************************************************/
29 //! @file executor.h
31 #pragma once
32 #include <string>
33 #include <vector>
34 #include <memory>
35 #include <cstdint>
36 #include <cassert>
37 #include <set>
38 #include <exception>
40 #include "configuration.h"
42 namespace tinn {
44 //! Enumerates types of devices available to offload the network.
45 enum class DeviceType { DSP, /**< Offload to C66x DSP */
46 DLA /**< Offload to TI DLA */
47 };
49 //! Enumerates IDs for devices of a given type.
50 enum class DeviceId : int { ID0=0, /**< DSP1 or DLA1 */
51 ID1, /**< DSP2 or DLA2 */
52 ID2, /**< DLA3 */
53 ID3 /**< DLA4 */
54 };
56 //! Used to specify the set of devices available to an Executor
57 typedef std::set<DeviceId> DeviceIds;
59 class ExecutorImpl;
60 class ExecutionObject;
62 //! Defines the return type for Executor::GetExecutionObjects
63 typedef std::vector<std::unique_ptr<ExecutionObject>> ExecutionObjects;
65 /*! @class Executor
66 @brief Manages the overall execution of a network using the
67 specified configuration and the set of devices available to the
68 executor.
69 */
70 class Executor
71 {
72 public:
73 //! @brief Create an Executor object.
74 //!
75 //! The Executor will create the required ExecutionObject's and
76 //! initialize them with the specified TI DL network. E.g.
77 //! @code
78 //! Configuration configuration;
79 //! configuration.ReadFromFile("path to configuration file");
80 //! DeviceIds ids1 = {DeviceId::ID2, DeviceId::ID3};
81 //! Executor executor(DeviceType::DLA, ids, configuration);
82 //! @endcode
83 //!
84 //! @param device_type DSP or EVE/DLA device
85 //! @param ids Set of devices uses by this instance of the Executor
86 //! @param configuration Configuration used to initialize the Executor
87 Executor(DeviceType device_type, const DeviceIds& ids,
88 const Configuration& configuration);
90 //! @brief Tear down an Executor and free resources used by the
91 //! Executor object
92 ~Executor();
94 //! Returns a vector of unique_ptr's to execution objects
95 //! available on this instance of the Executor
96 const ExecutionObjects& GetExecutionObjects() const;
98 //! @brief Returns the number of devices of the specified type
99 //! available for TI DL.
100 //! @param device_type DSP or EVE/DLA device
101 //! @return number of devices available
102 static uint32_t GetNumDevices(DeviceType device_type);
104 //! @brief Returns a string corresponding to the API version
105 //!
106 //! @return <major_ver>.<minor_ver>.<patch_ver>.<git_sha>
107 static std::string GetAPIVersion();
109 Executor(const Executor&) = delete;
110 Executor& operator= (const Executor&) = delete;
113 private:
114 std::unique_ptr<ExecutorImpl> pimpl_m;
115 };
118 /*! @class ArgInfo
119 * @brief Describe input and output buffers required by ExecutionObjects
120 */
121 class ArgInfo
122 {
123 public:
124 enum class DeviceAccess { R_ONLY=0, W_ONLY, RW };
126 //! Enumerates the types of arguments represented by ArgInfo
127 enum class Kind { BUFFER=0, SCALAR };
129 //! Construct an ArgInfo object from a pointer to a chunk of memory
130 //! and its size.
131 ArgInfo(void *p, size_t size) :
132 ptr_m(p), size_m(size),
133 access_m(DeviceAccess::RW), kind_m(Kind::BUFFER) {}
135 //! Construct an ArgInfo object from a pointer to a chunk of memory
136 //! its size and kind
137 ArgInfo(void *p, size_t size, Kind kind) :
138 ptr_m(p), size_m(size), access_m(DeviceAccess::RW), kind_m(kind) {}
140 //! @return Pointer to the buffer or scalar represented by ArgInfo
141 void *ptr() const { return ptr_m; }
143 //! @return The size of the buffer or scalar represented by ArgInfo
144 size_t size() const { return size_m; }
146 // Only used by tinn::Device
147 Kind kind() const { return kind_m; }
148 bool isLocal() const { return (ptr_m == nullptr); }
150 private:
151 void* ptr_m;
152 size_t size_m;
153 DeviceAccess access_m;
154 Kind kind_m;
155 };
158 extern "C" void __free_ddr(void *ptr);
159 extern "C" void* __malloc_ddr(size_t s);
161 //! template typedef for unique_ptr with __free_ddr deleter
162 template<class T>
163 using up_malloc_ddr = std::unique_ptr<T, decltype(&__free_ddr)>;
165 //! __malloc_ddr wrapper - Bytes allocated determined by sizeof(T)
166 template<class T>
167 inline T* malloc_ddr()
168 {
169 assert (std::is_pointer<T>::value == false);
170 T* val = reinterpret_cast<T *>(__malloc_ddr(sizeof(T)));
171 assert (val != nullptr);
172 return val;
173 }
175 //! __malloc_ddr wrapper - Bytes allocated passed as argument
176 template<class T>
177 inline T* malloc_ddr(size_t size)
178 {
179 assert (std::is_pointer<T>::value == false);
180 T* val = reinterpret_cast<T *>(__malloc_ddr(size));
181 assert (val != nullptr);
182 return val;
183 }
185 /*! @class Exception
186 * @brief Used to error reporting
187 */
188 class Exception : public std::exception
189 {
190 public:
191 Exception() {}
192 Exception(const std::string& error, const std::string& file,
193 const std::string& func, uint32_t line_no);
194 Exception(int32_t errorCode, const std::string& file,
195 const std::string& func, uint32_t line_no);
197 virtual ~Exception() {}
199 //! @return String describing the error message and its location
200 virtual const char* what() const noexcept;
202 private:
203 std::string message_m;
204 };
206 } // namespace tinn