1/* 2 * Copyright (c) 2016-2021 Arm Limited. 3 * 4 * SPDX-License-Identifier: MIT 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to 8 * deal in the Software without restriction, including without limitation the 9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in all 14 * copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24#if defined(ACT) && defined(DATA_TYPE) && defined(VEC_SIZE) 25 26#define TYPE VEC_DATA_TYPE(DATA_TYPE, VEC_SIZE) 27 28#include "activation_float_helpers.h" 29 30/** This performs an activation function floating point inputs. 31 * 32 * @note In order to perform the activation function "in-place", the pre-processor -DIN_PLACE must be passed at compile time 33 * 34 * @note Datatype should be given as a preprocessor argument using -DDATA_TYPE=type. e.g. -DDATA_TYPE=short 35 * @note Vector size should be given as a preprocessor argument using -DVEC_SIZE=size. e.g. -DVEC_SIZE=16 36 * @note Leftover vector size has to be passed at compile time using -DVEC_SIZE_LEFTOVER. e.g. -DVEC_SIZE_LEFTOVER=3. It is defined as the remainder between the input's first dimension and VEC_SIZE 37 * @note Activation function should be given as a preprocessor argument using -DACT=name. e.g. -DACT=TANH 38 * @note A, B variables required by some activation functions are set using -DA_VAL= and -DB_VAL= respectively. 39 * 40 * @param[in] input_ptr Pointer to the source image. Supported data types: F16/F32 41 * @param[in] input_stride_x Stride of the source image in X dimension (in bytes) 42 * @param[in] input_step_x input_stride_x * number of elements along X processed per workitem(in bytes) 43 * @param[in] input_stride_y Stride of the source image in Y dimension (in bytes) 44 * @param[in] input_step_y input_stride_y * number of elements along Y processed per workitem(in bytes) 45 * @param[in] input_stride_z Stride of the source tensor in Z dimension (in bytes) 46 * @param[in] input_step_z input_stride_z * number of elements along Z processed per workitem(in bytes) 47 * @param[in] input_offset_first_element_in_bytes The offset of the first element in the source image 48 * @param[out] output_ptr Pointer to the destination image. Supported data types: same as @p input_ptr 49 * @param[in] output_stride_x Stride of the destination image in X dimension (in bytes) 50 * @param[in] output_step_x output_stride_x * number of elements along X processed per workitem(in bytes) 51 * @param[in] output_stride_y Stride of the destination image in Y dimension (in bytes) 52 * @param[in] output_step_y output_stride_y * number of elements along Y processed per workitem(in bytes) 53 * @param[in] output_stride_z Stride of the source tensor in Z dimension (in bytes) 54 * @param[in] output_step_z output_stride_z * number of elements along Z processed per workitem(in bytes) 55 * @param[in] output_offset_first_element_in_bytes The offset of the first element in the destination image 56 */ 57__kernel void activation_layer( 58 TENSOR3D_DECLARATION(input) 59#ifndef IN_PLACE 60 , 61 TENSOR3D_DECLARATION(output) 62#endif /* not IN_PLACE */ 63) 64{ 65 uint x_offs = max((int)(get_global_id(0) * VEC_SIZE * sizeof(DATA_TYPE) - (VEC_SIZE - VEC_SIZE_LEFTOVER) % VEC_SIZE * sizeof(DATA_TYPE)), 0); 66 67 // Get pixels pointer 68 __global uchar *input_addr = input_ptr + input_offset_first_element_in_bytes + x_offs + get_global_id(1) * input_stride_y + get_global_id(2) * input_stride_z; 69#ifdef IN_PLACE 70 __global uchar *output_addr = input_addr; 71#else /* IN_PLACE */ 72 __global uchar *output_addr = output_ptr + output_offset_first_element_in_bytes + x_offs + get_global_id(1) * output_stride_y + get_global_id(2) * output_stride_z; 73#endif /* IN_PLACE */ 74 75 // Load data 76 TYPE data0 = VLOAD(VEC_SIZE)(0, (__global DATA_TYPE *)input_addr); 77 78 // Perform activation 79 data0 = ACTIVATION(ACT, DATA_TYPE, VEC_SIZE, data0, A_VAL, B_VAL); 80 81 // Store result 82 STORE_VECTOR_SELECT(data, DATA_TYPE, output_addr, VEC_SIZE, VEC_SIZE_LEFTOVER, VEC_SIZE_LEFTOVER != 0 && get_global_id(0) == 0) 83} 84 85#endif /* defined(ACT) */ 86