1/* 2 * Copyright (c) 2018-2021 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#include "helpers.h" 25 26#if defined(DATA_TYPE) && defined(FACTOR_1) && defined(FACTOR_2) 27/** Perform a NCHW -> NHWC or NHWC -> NCHW conversion for Fully Connected 2D weights. 28 * 29 * For NCHW -> NHWC, FACTOR_1 will be equal to the product of the first two dimensions of FullyConnectedLayer's input and FACTOR_2 will represent the number of channels of that tensor. 30 * For NHWC -> NCHW, FACTOR_1 and FACTOR_2 will hold the same values, but swapped. 31 * 32 * @attention Data type can be passed using the -DDATA_TYPE compile flag, e.g. -DDATA_TYPE=float 33 * @attention Original input tensor width*height and depth should be given as a preprocessor argument using -DFACTOR_1=size and -DFACTOR_2=size for NCHW and vice versa for NHWC. e.g. -DFACTOR_1=256 and -DFACTOR_2=128 34 * 35 * @param[in] src_ptr Pointer to the source image. Supported data types: All. 36 * @param[in] src_stride_x Stride of the source image in X dimension (in bytes) 37 * @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes) 38 * @param[in] src_stride_y Stride of the source image in Y dimension (in bytes) 39 * @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) 40 * @param[in] src_offset_first_element_in_bytes The offset of the first element in the source image 41 * @param[out] dst_ptr Pointer to the destination image. Supported data types: same as @p src_ptr 42 * @param[in] dst_stride_x Stride of the destination image in X dimension (in bytes) 43 * @param[in] dst_step_x dst_stride_x * number of elements along X processed per workitem(in bytes) 44 * @param[in] dst_stride_y Stride of the destination image in Y dimension (in bytes) 45 * @param[in] dst_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes) 46 * @param[in] dst_offset_first_element_in_bytes The offset of the first element in the destination image 47 */ 48__kernel void convert_fc_weights( 49 IMAGE_DECLARATION(src), 50 IMAGE_DECLARATION(dst)) 51{ 52 Image src = CONVERT_TO_IMAGE_STRUCT(src); 53 54 __global uchar *dst_addr = dst_ptr + dst_offset_first_element_in_bytes + get_global_id(0) * dst_stride_x + (get_global_id(1) % FACTOR_1 * FACTOR_2 + get_global_id(1) / FACTOR_1) * dst_stride_y; 55 56 *((__global DATA_TYPE *)dst_addr) = *((__global DATA_TYPE *)src.ptr); 57} 58#endif // defined(DATA_TYPE) && defined(FACTOR_1) && defined(FACTOR_2) 59