163 lines
4.8 KiB
C
163 lines
4.8 KiB
C
/*
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* Copyright (C) 2016-2019 C-SKY Limited. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the License); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an AS IS BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* ----------------------------------------------------------------------
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* Title: csi_nnsupportfunctions.h
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* Description: Public header file of support functions for CSI NN Library
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*
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* -------------------------------------------------------------------- */
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#ifndef _CSKY_DSP2_NNSUPPORTFUNCTIONS_H_
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#define _CSKY_DSP2_NNSUPPORTFUNCTIONS_H_
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#include "csi_instance.h"
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/**
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* @brief Union for SIMD access of Q31/Q15/Q7 types
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*/
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union csi_nnword
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{
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q31_t word; /**< Q31 type */
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q15_t half_words[2]; /**< Q15 type */
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q7_t bytes[4]; /**< Q7 type */
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};
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/**
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* @defgroup nndata_convert Neural Network Data Conversion Functions
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*
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* Perform data type conversion in-between neural network operations
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*
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*/
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/**
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* @brief Converts the elements of the Q7 vector to Q15 vector without left-shift
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* @param[in] *pSrc points to the Q7 input vector
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* @param[out] *pDst points to the Q15 output vector
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* @param[in] blockSize length of the input vector
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* @return none.
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*
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*/
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void csi_q7_to_q15_no_shift(const q7_t * pSrc, q15_t * pDst,
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uint32_t blockSize);
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/**
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* @brief Converts the elements of the Q7 vector to reordered Q15 vector without left-shift
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* @param[in] *pSrc points to the Q7 input vector
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* @param[out] *pDst points to the Q15 output vector
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* @param[in] blockSize length of the input vector
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* @return none.
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*
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*/
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void csi_q7_to_q15_reordered_no_shift(const q7_t * pSrc, q15_t * pDst,
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uint32_t blockSize);
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#if defined (CSI_MATH_DSP)
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/**
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* @brief read and expand one Q7 word into two Q15 words
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*/
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__ALWAYS_STATIC_INLINE void *read_and_pad(void *source, q31_t *out1,
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q31_t *out2)
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{
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q31_t inA = *__SIMD32(source)++;
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q31_t inAbuf1 = __SXTB16(__ROR(inA, 8));
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q31_t inAbuf2 = __SXTB16(inA);
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#ifndef CSKY_MATH_BIG_ENDIAN
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*out2 = __PKHTB(inAbuf1, inAbuf2, 16);
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*out1 = __PKHBT(inAbuf2, inAbuf1, 16);
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#else
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*out1 = __PKHTB(inAbuf1, inAbuf2, 16);
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*out2 = __PKHBT(inAbuf2, inAbuf1, 16);
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#endif
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return source;
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}
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/**
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* @brief read and expand one Q7 word into two Q15 words with reordering
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*/
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__ALWAYS_STATIC_INLINE void *read_and_pad_reordered(void *source, q31_t * out1,
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q31_t * out2)
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{
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q31_t inA = *__SIMD32(source)++;
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#ifndef CSKY_MATH_BIG_ENDIAN
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*out2 = __SXTB16(__ROR(inA, 8));
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*out1 = __SXTB16(inA);
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#else
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*out1 = __SXTB16(__ROR(inA, 8));
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*out2 = __SXTB16(inA);
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#endif
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return source;
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}
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#endif
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q7_t *csi_nn_mat_mult_kernel_q7_q15_reordered(const q7_t * pA,
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const q15_t * pInBuffer,
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const uint16_t ch_im_out,
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const uint16_t numCol_A,
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const uint16_t bias_shift,
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const uint16_t out_shift,
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const q7_t * bias,
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q7_t * pOut);
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q7_t *csi_nn_mat_mult_kernel_q7_q15(const q7_t * pA,
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const q15_t * pInBuffer,
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const uint16_t ch_im_out,
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const uint16_t numCol_A,
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const uint16_t bias_shift,
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const uint16_t out_shift,
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const q7_t * bias,
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q7_t * pOut);
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/**
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* @brief A few utility functions used by pooling functions
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*
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*/
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void buffer_scale_back_q15_to_q7(q15_t * buffer, q7_t * target,
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uint16_t length, uint16_t scale);
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void accumulate_q7_to_q15(q15_t * base, q7_t * target,
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const uint16_t length);
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/**
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* @brief defition to adding rouding offset
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*/
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#ifndef CSKY_NN_TRUNCATE
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#define NN_ROUND(out_shift) ( 0x1 << (out_shift - 1) )
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#else
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#define NN_ROUND(out_shift) 0
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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