/******************************************************************************
*
-* Copyright (c) 2019 Intel.
+* Copyright (c) 2020 Intel.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
*******************************************************************************/
+/**
+ * @brief xRAN BFP compression/decompression U-plane implementation and interface functions
+ *
+ * @file xran_compression.cpp
+ * @ingroup group_source_xran
+ * @author Intel Corporation
+ **/
+
#include "xran_compression.hpp"
+#include "xran_compression.h"
+#include "xran_mod_compression.h"
+#include "xran_fh_o_du.h"
#include <complex>
#include <algorithm>
#include <immintrin.h>
+#include <limits.h>
+#include <cstring>
-void
-BlockFloatCompander::BlockFloatCompress_AVX512(const ExpandedData& dataIn, CompressedData* dataOut)
-{
- __m512i maxAbs = __m512i();
+using namespace BlockFloatCompander;
- /// Load data and find max(abs(RB))
- const __m512i* rawData = reinterpret_cast<const __m512i*>(dataIn.dataExpanded);
- static constexpr int k_numInputLoopIts = BlockFloatCompander::k_numRB / 4;
+/** callback function type for Symbol packet */
+typedef void (*xran_bfp_compress_fn)(const BlockFloatCompander::ExpandedData& dataIn,
+ BlockFloatCompander::CompressedData* dataOut);
-#pragma unroll(k_numInputLoopIts)
- for (int n = 0; n < k_numInputLoopIts; ++n)
+/** callback function type for Symbol packet */
+typedef void (*xran_bfp_decompress_fn)(const BlockFloatCompander::CompressedData& dataIn, BlockFloatCompander::ExpandedData* dataOut);
+
+int32_t
+xranlib_compress(const struct xranlib_compress_request *request,
+ struct xranlib_compress_response *response)
{
- /// Re-order the next 4RB in input data into 3 registers
- /// Input SIMD vectors are:
- /// [A A A A A A A A A A A A B B B B]
- /// [B B B B B B B B C C C C C C C C]
- /// [C C C C D D D D D D D D D D D D]
- /// Re-ordered SIMD vectors are:
- /// [A A A A B B B B C C C C D D D D]
- /// [A A A A B B B B C C C C D D D D]
- /// [A A A A B B B B C C C C D D D D]
- static constexpr uint8_t k_msk1 = 0b11111100; // Copy first lane of src
- static constexpr int k_shuff1 = 0x41;
- const auto z_w1 = _mm512_mask_shuffle_i64x2(rawData[3 * n + 0], k_msk1, rawData[3 * n + 1], rawData[3 * n + 2], k_shuff1);
-
- static constexpr uint8_t k_msk2 = 0b11000011; // Copy middle two lanes of src
- static constexpr int k_shuff2 = 0xB1;
- const auto z_w2 = _mm512_mask_shuffle_i64x2(rawData[3 * n + 1], k_msk2, rawData[3 * n + 0], rawData[3 * n + 2], k_shuff2);
-
- static constexpr uint8_t k_msk3 = 0b00111111; // Copy last lane of src
- static constexpr int k_shuff3 = 0xBE;
- const auto z_w3 = _mm512_mask_shuffle_i64x2(rawData[3 * n + 2], k_msk3, rawData[3 * n + 0], rawData[3 * n + 1], k_shuff3);
-
- /// Perform max abs on these 3 registers
- const auto abs16_1 = _mm512_abs_epi16(z_w1);
- const auto abs16_2 = _mm512_abs_epi16(z_w2);
- const auto abs16_3 = _mm512_abs_epi16(z_w3);
- const auto maxAbs_12 = _mm512_max_epi16(abs16_1, abs16_2);
- const auto maxAbs_123 = _mm512_max_epi16(maxAbs_12, abs16_3);
-
- /// Perform horizontal max over each lane
- /// Swap 64b in each lane and compute max
- static const auto k_perm64b = _mm512_set_epi64(6, 7, 4, 5, 2, 3, 0, 1);
- auto maxAbsPerm = _mm512_permutexvar_epi64(k_perm64b, maxAbs_123);
- auto maxAbsHorz = _mm512_max_epi16(maxAbs_123, maxAbsPerm);
-
- /// Swap each pair of 32b in each lane and compute max
- static const auto k_perm32b = _mm512_set_epi32(14, 15, 12, 13, 10, 11, 8, 9, 6, 7, 4, 5, 2, 3, 0, 1);
- maxAbsPerm = _mm512_permutexvar_epi32(k_perm32b, maxAbsHorz);
- maxAbsHorz = _mm512_max_epi16(maxAbsHorz, maxAbsPerm);
-
- /// Swap each IQ pair in each lane (via 32b rotation) and compute max
- maxAbsPerm = _mm512_rol_epi32(maxAbsHorz, BlockFloatCompander::k_numBitsIQ);
- maxAbsHorz = _mm512_max_epi16(maxAbsHorz, maxAbsPerm);
-
- /// Insert values into maxAbs
- /// Use sliding mask to insert wanted values into maxAbs
- /// Pairs of values will be inserted and corrected outside of loop
- static const auto k_select4RB = _mm512_set_epi32(28, 24, 20, 16, 28, 24, 20, 16,
- 28, 24, 20, 16, 28, 24, 20, 16);
- static constexpr uint16_t k_expMsk[k_numInputLoopIts] = { 0x000F, 0x00F0, 0x0F00, 0xF000 };
- maxAbs = _mm512_mask_permutex2var_epi32(maxAbs, k_expMsk[n], k_select4RB, maxAbsHorz);
+ if (request->compMethod == XRAN_COMPMETHOD_MODULATION)
+ {
+ struct xranlib_5gnr_mod_compression_request mod_request;
+ struct xranlib_5gnr_mod_compression_response mod_response;
+ mod_request.data_in = request->data_in;
+ mod_request.unit = request->ScaleFactor;
+ mod_request.modulation = (enum xran_modulation_order)(request->iqWidth * 2);
+ mod_request.num_symbols = request->numRBs * XRAN_NUM_OF_SC_PER_RB;
+ mod_request.re_mask = request->reMask;
+ mod_response.data_out = response->data_out;
+ response->len = (request->numRBs * XRAN_NUM_OF_SC_PER_RB * request->iqWidth * 2) >> 3;
+
+ return xranlib_5gnr_mod_compression(&mod_request, &mod_response);
+ }
+ else{
+ if(_may_i_use_cpu_feature(_FEATURE_AVX512IFMA52)) {
+ return xranlib_compress_avxsnc(request,response);
+ } else {
+ return xranlib_compress_avx512(request,response);
+ }
+ }
}
- /// Convert to 32b by removing repeated values in maxAbs
- static const auto k_upperWordMask = _mm512_set_epi64(0x0000FFFF0000FFFF, 0x0000FFFF0000FFFF,
- 0x0000FFFF0000FFFF, 0x0000FFFF0000FFFF,
- 0x0000FFFF0000FFFF, 0x0000FFFF0000FFFF,
- 0x0000FFFF0000FFFF, 0x0000FFFF0000FFFF);
- maxAbs = _mm512_and_epi64(maxAbs, k_upperWordMask);
-
- /// Compute exponent and store for later use
- static constexpr int k_expTotShiftBits = 32 - BlockFloatCompander::k_iqWidth + 1;
- const auto totShiftBits = _mm512_set1_epi32(k_expTotShiftBits);
- const auto lzCount = _mm512_lzcnt_epi32(maxAbs);
- const auto exponent = _mm512_sub_epi32(totShiftBits, lzCount);
- int8_t storedExp[BlockFloatCompander::k_numRB] = {};
- static constexpr uint16_t k_expWriteMask = 0xFFFF;
- _mm512_mask_cvtepi32_storeu_epi8(storedExp, k_expWriteMask, exponent);
-
- /// Shift 1RB by corresponding exponent and write exponent and data to output
- /// Output data is packed exponent first followed by corresponding compressed RB
-#pragma unroll(BlockFloatCompander::k_numRB)
- for (int n = 0; n < BlockFloatCompander::k_numRB; ++n)
+int32_t
+xranlib_decompress(const struct xranlib_decompress_request *request,
+ struct xranlib_decompress_response *response)
{
- const __m512i* rawDataIn = reinterpret_cast<const __m512i*>(dataIn.dataExpanded + n * BlockFloatCompander::k_numREReal);
- auto compData = _mm512_srai_epi16(*rawDataIn, storedExp[n]);
+ if (request->compMethod == XRAN_COMPMETHOD_MODULATION)
+ {
+ struct xranlib_5gnr_mod_decompression_request mod_request;
+ struct xranlib_5gnr_mod_decompression_response mod_response;
+ mod_request.data_in = request->data_in;
+ mod_request.unit = request->ScaleFactor;
+ mod_request.modulation = (enum xran_modulation_order)(request->iqWidth * 2);
+ mod_request.num_symbols = request->numRBs * XRAN_NUM_OF_SC_PER_RB;
+ mod_request.re_mask = request->reMask;
+ mod_response.data_out = response->data_out;
+ response->len = request->numRBs * XRAN_NUM_OF_SC_PER_RB * 4;
- dataOut->dataCompressed[n * (BlockFloatCompander::k_numREReal + 1)] = storedExp[n];
- static constexpr uint32_t k_rbMask = 0x00FFFFFF; // Write mask for 1RB (24 values)
- _mm512_mask_cvtepi16_storeu_epi8(dataOut->dataCompressed + n * (BlockFloatCompander::k_numREReal + 1) + 1, k_rbMask, compData);
+ return xranlib_5gnr_mod_decompression(&mod_request, &mod_response);
+ }
+ else{
+ if(_may_i_use_cpu_feature(_FEATURE_AVX512IFMA52)) {
+ return xranlib_decompress_avxsnc(request,response);
+ } else {
+ return xranlib_decompress_avx512(request,response);
+ }
+ }
}
-}
+int32_t
+xranlib_compress_bfw(const struct xranlib_compress_request *request,
+ struct xranlib_compress_response *response)
+ {
+ if(_may_i_use_cpu_feature(_FEATURE_AVX512IFMA52)) {
+ return xranlib_compress_avxsnc_bfw(request,response);
+ } else {
+ return xranlib_compress_avx512_bfw(request,response);
+ }
+ }
-void
-BlockFloatCompander::BlockFloatExpand_AVX512(const CompressedData& dataIn, ExpandedData* dataOut)
-{
-#pragma unroll(BlockFloatCompander::k_numRB)
- for (int n = 0; n < BlockFloatCompander::k_numRB; ++n)
+int32_t
+xranlib_decompress_bfw(const struct xranlib_decompress_request *request,
+ struct xranlib_decompress_response *response)
{
- /// Expand 1RB of data
- const __m256i* rawDataIn = reinterpret_cast<const __m256i*>(dataIn.dataCompressed + n * (BlockFloatCompander::k_numREReal + 1) + 1);
- const auto compData16 = _mm512_cvtepi8_epi16(*rawDataIn);
- const auto expData = _mm512_slli_epi16(compData16, *(dataIn.dataCompressed + n * (BlockFloatCompander::k_numREReal + 1)));
-
- /// Write expanded data to output
- static constexpr uint8_t k_rbMask64 = 0b00111111; // 64b write mask for 1RB (24 int16 values)
- _mm512_mask_storeu_epi64(dataOut->dataExpanded + n * BlockFloatCompander::k_numREReal, k_rbMask64, expData);
+ if(_may_i_use_cpu_feature(_FEATURE_AVX512IFMA52)) {
+ return xranlib_decompress_avxsnc_bfw(request,response);
+ } else {
+ return xranlib_decompress_avx512_bfw(request,response);
}
}
+int32_t
+xranlib_compress_avx512(const struct xranlib_compress_request *request,
+ struct xranlib_compress_response *response)
+{
+ BlockFloatCompander::ExpandedData expandedDataInput;
+ BlockFloatCompander::CompressedData compressedDataOut;
+ xran_bfp_compress_fn com_fn = NULL;
+ uint16_t totalRBs = request->numRBs;
+ uint16_t remRBs = totalRBs;
+ int16_t len = 0;
+ int16_t block_idx_bytes = 0;
-void
-BlockFloatCompander::BlockFloatCompress_Basic(const ExpandedData& dataIn, CompressedData* dataOut)
+ switch (request->iqWidth) {
+ case 8:
+ case 9:
+ case 10:
+ case 12:
+ com_fn = BlockFloatCompander::BFPCompressUserPlaneAvx512;
+ break;
+ default:
+ com_fn = BlockFloatCompander::BFPCompressRef;
+ break;
+ }
+
+ expandedDataInput.iqWidth = request->iqWidth;
+ expandedDataInput.numDataElements = 24;
+
+ while (remRBs){
+ expandedDataInput.dataExpanded = &request->data_in[block_idx_bytes];
+ compressedDataOut.dataCompressed = (uint8_t*)&response->data_out[len];
+ if(remRBs >= 16){
+ expandedDataInput.numBlocks = 16;
+ com_fn(expandedDataInput, &compressedDataOut);
+ len += ((3 * expandedDataInput.iqWidth) + 1) * std::min((int16_t)BlockFloatCompander::k_maxNumBlocks,(int16_t)16);
+ block_idx_bytes += 16*expandedDataInput.numDataElements;
+ remRBs -= 16;
+ }else if(remRBs >= 4){
+ expandedDataInput.numBlocks = 4;
+ com_fn(expandedDataInput, &compressedDataOut);
+ len += ((3 * expandedDataInput.iqWidth) + 1) * std::min((int16_t)BlockFloatCompander::k_maxNumBlocks,(int16_t)4);
+ block_idx_bytes +=4*expandedDataInput.numDataElements;
+ remRBs -=4;
+ }else if (remRBs >= 1){
+ expandedDataInput.numBlocks = 1;
+ com_fn(expandedDataInput, &compressedDataOut);
+ len += ((3 * expandedDataInput.iqWidth) + 1) * std::min((int16_t)BlockFloatCompander::k_maxNumBlocks,(int16_t)1);
+ block_idx_bytes +=1*expandedDataInput.numDataElements;
+ remRBs = remRBs - 1;
+ }
+ }
+
+ response->len = ((3 * expandedDataInput.iqWidth) + 1) * totalRBs;
+
+ return 0;
+}
+
+int32_t
+xranlib_decompress_avx512(const struct xranlib_decompress_request *request,
+ struct xranlib_decompress_response *response)
{
- int16_t maxAbs[BlockFloatCompander::k_numRB];
- for (int rb = 0; rb < BlockFloatCompander::k_numRB; ++rb)
- {
- // Find max abs value for this RB
- maxAbs[rb] = 0;
- for (int re = 0; re < BlockFloatCompander::k_numREReal; ++re)
- {
- auto dataIdx = rb * BlockFloatCompander::k_numREReal + re;
- int16_t dataAbs = (int16_t)std::abs(dataIn.dataExpanded[dataIdx]);
- maxAbs[rb] = std::max(maxAbs[rb], dataAbs);
+ BlockFloatCompander::CompressedData compressedDataInput;
+ BlockFloatCompander::ExpandedData expandedDataOut;
+
+ xran_bfp_decompress_fn decom_fn = NULL;
+ uint16_t totalRBs = request->numRBs;
+ uint16_t remRBs = totalRBs;
+ int16_t len = 0;
+ int16_t block_idx_bytes = 0;
+
+ switch (request->iqWidth) {
+ case 8:
+ case 9:
+ case 10:
+ case 12:
+ decom_fn = BlockFloatCompander::BFPExpandUserPlaneAvx512;
+ break;
+ default:
+ decom_fn = BlockFloatCompander::BFPExpandRef;
+ break;
}
- // Find exponent
- static constexpr int k_expTotShiftBits16 = 16 - BlockFloatCompander::k_iqWidth + 1;
- auto thisExp = (int8_t)(k_expTotShiftBits16 - __lzcnt16(maxAbs[rb]));
- auto expIdx = rb * (BlockFloatCompander::k_numREReal + 1);
- dataOut->dataCompressed[expIdx] = thisExp;
+ compressedDataInput.iqWidth = request->iqWidth;
+ compressedDataInput.numDataElements = 24;
- // ARS data by exponent
- for (int re = 0; re < BlockFloatCompander::k_numREReal; ++re)
- {
- auto dataIdxIn = rb * BlockFloatCompander::k_numREReal + re;
- auto dataIdxOut = (expIdx + 1) + re;
- dataOut->dataCompressed[dataIdxOut] = (int8_t)(dataIn.dataExpanded[dataIdxIn] >> thisExp);
+ while(remRBs) {
+ compressedDataInput.dataCompressed = (uint8_t*)&request->data_in[block_idx_bytes];
+ expandedDataOut.dataExpanded = &response->data_out[len];
+ if(remRBs >= 16){
+ compressedDataInput.numBlocks = 16;
+ decom_fn(compressedDataInput, &expandedDataOut);
+ len += 16*compressedDataInput.numDataElements;
+ block_idx_bytes += ((3 * compressedDataInput.iqWidth) + 1) * std::min((int16_t)BlockFloatCompander::k_maxNumBlocks,(int16_t)16);
+ remRBs -= 16;
+ }else if(remRBs >= 4){
+ compressedDataInput.numBlocks = 4;
+ decom_fn(compressedDataInput, &expandedDataOut);
+ len += 4*compressedDataInput.numDataElements;
+ block_idx_bytes += ((3 * compressedDataInput.iqWidth) + 1) * std::min((int16_t)BlockFloatCompander::k_maxNumBlocks,(int16_t)4);
+ remRBs -=4;
+ }else if (remRBs >= 1){
+ compressedDataInput.numBlocks = 1;
+ decom_fn(compressedDataInput, &expandedDataOut);
+ len += 1*compressedDataInput.numDataElements;
+ block_idx_bytes += ((3 * compressedDataInput.iqWidth) + 1) * std::min((int16_t)BlockFloatCompander::k_maxNumBlocks,(int16_t)1);
+ remRBs = remRBs - 1;
+ }
}
- }
+
+ response->len = totalRBs * compressedDataInput.numDataElements * sizeof(int16_t);
+
+ return 0;
}
+int32_t
+xranlib_compress_avx512_bfw(const struct xranlib_compress_request *request,
+ struct xranlib_compress_response *response)
+{
+ BlockFloatCompander::ExpandedData expandedDataInput;
+ BlockFloatCompander::CompressedData compressedDataOut;
+ xran_bfp_compress_fn com_fn = NULL;
+
+ if (request->numRBs != 1){
+ printf("Unsupported numRBs %d\n", request->numRBs);
+ return -1;
+ }
+
+ switch (request->iqWidth) {
+ case 8:
+ case 9:
+ case 10:
+ case 12:
+ switch (request->numDataElements) {
+ case 16:
+ com_fn = BlockFloatCompander::BFPCompressCtrlPlane8Avx512;
+ break;
+ case 32:
+ com_fn = BlockFloatCompander::BFPCompressCtrlPlane16Avx512;
+ break;
+ case 64:
+ com_fn = BlockFloatCompander::BFPCompressCtrlPlane32Avx512;
+ break;
+ case 128:
+ com_fn = BlockFloatCompander::BFPCompressCtrlPlane64Avx512;
+ break;
+ case 24:
+ default:
+ printf("Unsupported numDataElements %d\n", request->numDataElements);
+ return -1;
+ break;
+ }
+ break;
+ default:
+ printf("Unsupported iqWidth %d\n", request->iqWidth);
+ return -1;
+ break;
+ }
+
+ expandedDataInput.iqWidth = request->iqWidth;
+ expandedDataInput.numDataElements = request->numDataElements;
+ expandedDataInput.numBlocks = 1;
+ expandedDataInput.dataExpanded = &request->data_in[0];
+ compressedDataOut.dataCompressed = (uint8_t*)&response->data_out[0];
+
+ com_fn(expandedDataInput, &compressedDataOut);
+
+ response->len = (((expandedDataInput.numDataElements * expandedDataInput.iqWidth) >> 3) + 1)
+ * request->numRBs;
-void
-BlockFloatCompander::BlockFloatExpand_Basic(const CompressedData& dataIn, ExpandedData* dataOut)
+ return 0;
+}
+
+int32_t
+xranlib_decompress_avx512_bfw(const struct xranlib_decompress_request *request,
+ struct xranlib_decompress_response *response)
{
- // Expand data
- for (int rb = 0; rb < BlockFloatCompander::k_numRB; ++rb)
- {
- for (int re = 0; re < BlockFloatCompander::k_numREReal; ++re)
- {
- auto dataIdxOut = rb * BlockFloatCompander::k_numREReal + re;
- auto expIdx = rb * (BlockFloatCompander::k_numREReal + 1);
- auto dataIdxIn = (expIdx + 1) + re;
- auto thisData = (int16_t)dataIn.dataCompressed[dataIdxIn];
- auto thisExp = (int16_t)dataIn.dataCompressed[expIdx];
- dataOut->dataExpanded[dataIdxOut] = (int16_t)(thisData << thisExp);
+ BlockFloatCompander::CompressedData compressedDataInput;
+ BlockFloatCompander::ExpandedData expandedDataOut;
+ xran_bfp_decompress_fn decom_fn = NULL;
+
+ if (request->numRBs != 1){
+ printf("Unsupported numRBs %d\n", request->numRBs);
+ return -1;
}
- }
+
+ switch (request->iqWidth) {
+ case 8:
+ case 9:
+ case 10:
+ case 12:
+ switch (request->numDataElements) {
+ case 16:
+ decom_fn = BlockFloatCompander::BFPExpandCtrlPlane8Avx512;
+ break;
+ case 32:
+ decom_fn = BlockFloatCompander::BFPExpandCtrlPlane16Avx512;
+ break;
+ case 64:
+ decom_fn = BlockFloatCompander::BFPExpandCtrlPlane32Avx512;
+ break;
+ case 128:
+ decom_fn = BlockFloatCompander::BFPExpandCtrlPlane64Avx512;
+ break;
+ case 24:
+ default:
+ printf("Unsupported numDataElements %d\n", request->numDataElements);
+ return -1;
+ break;
+ }
+ break;
+ default:
+ printf("Unsupported iqWidth %d\n", request->iqWidth);
+ return -1;
+ break;
+ }
+
+ compressedDataInput.iqWidth = request->iqWidth;
+ compressedDataInput.numDataElements = request->numDataElements;
+ compressedDataInput.numBlocks = 1;
+ compressedDataInput.dataCompressed = (uint8_t*)&request->data_in[0];
+ expandedDataOut.dataExpanded = &response->data_out[0];
+
+ decom_fn(compressedDataInput, &expandedDataOut);
+
+ response->len = request->numRBs * compressedDataInput.numDataElements * sizeof(int16_t);
+
+ return 0;
}
+
Code Review / o-du / phy.git / blobdiff