Romain Beurdouche
54fd8ed9df
The fronthaul library ships with BFP compression for AVX512 enabled targets. This commit adds BFP compression for Arm targets by using the ArmRAL library.
117 lines
4.7 KiB
C
117 lines
4.7 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* 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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* http://www.openairinterface.org/?page_id=698
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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,
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* WITHOUT 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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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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/*! \file radio/fhi_72/armral_bfp_compression.c
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* \brief BFP compression for the O-RAN 7.2 FrontHaul Interface for Arm systems using the Arm RAN Acceleration Library
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* \author Romain Beurdouche
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* \date 2025
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* \company EURECOM
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* \email romain.beurdouche@eurecom.fr
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* \note ArmRAL available at https://git.gitlab.arm.com/networking/ral.git
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* \warning
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*/
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#include "armral.h"
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#include <rte_branch_prediction.h>
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#include "armral_bfp_compression.h"
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#include "common/utils/LOG/log.h"
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/**
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* The function operates on a fixed block size of one Physical Resource Block
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* (PRB). Each block consists of 12 16-bit complex resource elements. Each block
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* taken as input is compressed into 24 samples with a common unsigned scaling factor.
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*
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* @param[in] iq_width Width in bits of compressed samples.
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* @param[in] n_prb The number of input resource blocks.
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* @param[in] src Points to the input complex samples sequence.
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* @param[out] dst Points to the output compressed data.
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*/
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void armral_bfp_compression(uint32_t iq_width, uint32_t n_prb, int16_t *src, int8_t *dst)
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{
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armral_status ret = ARMRAL_ARGUMENT_ERROR;
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switch (iq_width) {
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case 8:
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ret = armral_block_float_compr_8bit(n_prb, (armral_cmplx_int16_t *)src, (armral_compressed_data_8bit *)dst, NULL);
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if (unlikely(ret != ARMRAL_SUCCESS)) {
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LOG_E(HW, "armral_block_scaling_compr_8bit returned an error: %d\n", (int)ret);
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}
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break;
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case 9:
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ret = armral_block_float_compr_9bit(n_prb, (armral_cmplx_int16_t *)src, (armral_compressed_data_9bit *)dst, NULL);
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if (unlikely(ret != ARMRAL_SUCCESS)) {
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LOG_E(HW, "armral_block_scaling_compr_9bit returned an error: %d\n", (int)ret);
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}
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break;
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case 14:
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ret = armral_block_float_compr_14bit(n_prb, (armral_cmplx_int16_t *)src, (armral_compressed_data_14bit *)dst, NULL);
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if (unlikely(ret != ARMRAL_SUCCESS)) {
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LOG_E(HW, "armral_block_scaling_compr_14bit returned an error: %d\n", (int)ret);
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}
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break;
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default:
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LOG_E(HW, "Unsupported IQ width in BFP compression: %d\n", iq_width);
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}
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}
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/**
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* The function operates on a fixed block size of one Physical Resource Block
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* (PRB). Each block consists of 12 compressed complex resource elements.
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* Each block taken as input is expanded into 12 16-bit complex samples.
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*
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* @param[in] iq_width Width in bits of compressed samples.
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* @param[in] n_prb The number of input resource blocks.
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* @param[in] src Points to the input compressed data.
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* @param[out] dst Points to the output complex samples sequence.
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*/
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void armral_bfp_decompression(uint32_t iq_width, uint32_t n_prb, int8_t *src, int16_t *dst)
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{
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armral_status ret = ARMRAL_ARGUMENT_ERROR;
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switch (iq_width) {
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case 8:
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ret = armral_block_float_decompr_8bit(n_prb, (armral_compressed_data_8bit *)src, (armral_cmplx_int16_t *)dst, NULL);
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if (unlikely(ret != ARMRAL_SUCCESS)) {
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LOG_E(HW, "armral_block_scaling_decompr_8bit returned an error: %d\n", (int)ret);
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}
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break;
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case 9:
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ret = armral_block_float_decompr_9bit(n_prb, (armral_compressed_data_9bit *)src, (armral_cmplx_int16_t *)dst, NULL);
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if (unlikely(ret != ARMRAL_SUCCESS)) {
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LOG_E(HW, "armral_block_scaling_decompr_9bit returned an error: %d\n", (int)ret);
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}
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break;
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case 14:
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ret = armral_block_float_decompr_14bit(n_prb, (armral_compressed_data_14bit *)src, (armral_cmplx_int16_t *)dst, NULL);
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if (unlikely(ret != ARMRAL_SUCCESS)) {
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LOG_E(HW, "armral_block_scaling_decompr_14bit returned an error: %d\n", (int)ret);
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}
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break;
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default:
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LOG_E(HW, "Unsupported IQ width in BFP decompression: %d\n", iq_width);
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}
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}
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