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Cherry pick ldpc-decoder-crc-check

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commit: 3cfefe3c6f7b2854a14d94fb7072ece2ff4c5c0a
This commit is contained in:
Sakthivel Velumani
2022-01-20 21:08:44 +05:30
parent b0d462e0ef
commit a8a5897a98
11 changed files with 121 additions and 256 deletions
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openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_decoder.c
+47 -154
View File
@@ -45,22 +45,22 @@
#include "nrLDPC_tools/nrLDPC_debug.h"
#endif
static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr, int8_t* p_out, t_nrLDPC_procBuf* p_procBuf, uint32_t numLLR, t_nrLDPC_lut* p_lut, t_nrLDPC_dec_params* p_decParams, t_nrLDPC_time_stats* p_profiler);
static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr, int8_t* p_out, uint32_t numLLR, t_nrLDPC_lut* p_lut, t_nrLDPC_dec_params* p_decParams, t_nrLDPC_time_stats* p_profiler);
int check_crc(uint8_t* decoded_bytes, uint32_t n, uint32_t F, uint8_t crc_type);
void nrLDPC_initcall(t_nrLDPC_dec_params* p_decParams, int8_t* p_llr, int8_t* p_out) {
}
int32_t nrLDPC_decod(t_nrLDPC_dec_params* p_decParams, int8_t* p_llr, int8_t* p_out, t_nrLDPC_procBuf* p_procBuf, t_nrLDPC_time_stats* p_profiler)
int32_t nrLDPC_decod(t_nrLDPC_dec_params* p_decParams, int8_t* p_llr, int8_t* p_out, t_nrLDPC_time_stats* p_profiler)
{
uint32_t numLLR;
uint32_t numIter = 0;
t_nrLDPC_lut lut;
t_nrLDPC_lut* p_lut = &lut;
//printf("p_procBuf->cnProcBuf = %p\n", p_procBuf->cnProcBuf);
// Initialize decoder core(s) with correct LUTs
numLLR = nrLDPC_init(p_decParams, p_lut);
// Launch LDPC decoder core for one segment
numIter = nrLDPC_decoder_core(p_llr, p_out, p_procBuf, numLLR, p_lut, p_decParams, p_profiler);
numIter = nrLDPC_decoder_core(p_llr, p_out, numLLR, p_lut, p_decParams, p_profiler);
return numIter;
}
@@ -74,13 +74,20 @@ int32_t nrLDPC_decod(t_nrLDPC_dec_params* p_decParams, int8_t* p_llr, int8_t* p_
\param p_decParams LDPC decoder parameters
\param p_profiler LDPC profiler statistics
*/
static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr, int8_t* p_out, t_nrLDPC_procBuf* p_procBuf, uint32_t numLLR, t_nrLDPC_lut* p_lut, t_nrLDPC_dec_params* p_decParams, t_nrLDPC_time_stats* p_profiler)
static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr, int8_t* p_out, uint32_t numLLR, t_nrLDPC_lut* p_lut, t_nrLDPC_dec_params* p_decParams, t_nrLDPC_time_stats* p_profiler)
{
uint16_t Z = p_decParams->Z;
uint8_t BG = p_decParams->BG;
uint8_t numMaxIter = p_decParams->numMaxIter;
e_nrLDPC_outMode outMode = p_decParams->outMode;
int8_t cnProcBuf[NR_LDPC_SIZE_CN_PROC_BUF] __attribute__ ((aligned(32))) = {0};
int8_t cnProcBufRes[NR_LDPC_SIZE_CN_PROC_BUF] __attribute__ ((aligned(32))) = {0};
int8_t bnProcBuf[NR_LDPC_SIZE_BN_PROC_BUF] __attribute__ ((aligned(32))) = {0};
int8_t bnProcBufRes[NR_LDPC_SIZE_BN_PROC_BUF] __attribute__ ((aligned(32))) = {0};
int8_t llrRes[NR_LDPC_MAX_NUM_LLR] __attribute__ ((aligned(32))) = {0};
int8_t llrProcBuf[NR_LDPC_MAX_NUM_LLR] __attribute__ ((aligned(32))) = {0};
int8_t llrOut[NR_LDPC_MAX_NUM_LLR] __attribute__ ((aligned(32))) = {0};
// Minimum number of iterations is 1
// 0 iterations means hard-decision on input LLRs
uint32_t i = 1;
@@ -95,9 +102,7 @@ static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr, int8_t* p_out, t_nrLDP
else
{
// Use LLR processing buffer as temporary output buffer
p_llrOut = p_procBuf->llrProcBuf;
// Clear llrProcBuf
memset(p_llrOut,0, NR_LDPC_MAX_NUM_LLR*sizeof(int8_t));
p_llrOut = llrOut;
}
@@ -105,14 +110,14 @@ static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr, int8_t* p_out, t_nrLDP
#ifdef NR_LDPC_PROFILER_DETAIL
start_meas(&p_profiler->llr2llrProcBuf);
#endif
nrLDPC_llr2llrProcBuf(p_lut, p_llr, p_procBuf, Z, BG);
nrLDPC_llr2llrProcBuf(p_lut, p_llr, llrProcBuf, Z, BG);
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->llr2llrProcBuf);
#endif
#ifdef NR_LDPC_DEBUG_MODE
nrLDPC_debug_initBuffer2File(nrLDPC_buffers_LLR_PROC);
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_LLR_PROC, p_procBuf);
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_LLR_PROC, llrProcBuf);
#endif
#ifdef NR_LDPC_PROFILER_DETAIL
@@ -120,11 +125,11 @@ static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr, int8_t* p_out, t_nrLDP
#endif
if (BG == 1)
{
nrLDPC_llr2CnProcBuf_BG1(p_lut, p_llr, p_procBuf, Z);
nrLDPC_llr2CnProcBuf_BG1(p_lut, p_llr, cnProcBuf, Z);
}
else
{
nrLDPC_llr2CnProcBuf_BG2(p_lut, p_llr, p_procBuf, Z);
nrLDPC_llr2CnProcBuf_BG2(p_lut, p_llr, cnProcBuf, Z);
}
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->llr2CnProcBuf);
@@ -132,7 +137,7 @@ static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr, int8_t* p_out, t_nrLDP
#ifdef NR_LDPC_DEBUG_MODE
nrLDPC_debug_initBuffer2File(nrLDPC_buffers_CN_PROC);
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_CN_PROC, p_procBuf);
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_CN_PROC, cnProcBuf);
#endif
// First iteration
@@ -143,11 +148,11 @@ static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr, int8_t* p_out, t_nrLDP
#endif
if (BG == 1)
{
nrLDPC_cnProc_BG1(p_lut, p_procBuf, Z);
nrLDPC_cnProc_BG1(p_lut, cnProcBuf, cnProcBufRes, Z);
}
else
{
nrLDPC_cnProc_BG2(p_lut, p_procBuf, Z);
nrLDPC_cnProc_BG2(p_lut, cnProcBuf, cnProcBufRes, Z);
}
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->cnProc);
@@ -155,7 +160,7 @@ static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr, int8_t* p_out, t_nrLDP
#ifdef NR_LDPC_DEBUG_MODE
nrLDPC_debug_initBuffer2File(nrLDPC_buffers_CN_PROC_RES);
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_CN_PROC_RES, p_procBuf);
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_CN_PROC_RES, cnProcBufRes);
#endif
#ifdef NR_LDPC_PROFILER_DETAIL
@@ -163,11 +168,11 @@ static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr, int8_t* p_out, t_nrLDP
#endif
if (BG == 1)
{
nrLDPC_cn2bnProcBuf_BG1(p_lut, p_procBuf, Z);
nrLDPC_cn2bnProcBuf_BG1(p_lut, cnProcBufRes, bnProcBuf, Z);
}
else
{
nrLDPC_cn2bnProcBuf_BG2(p_lut, p_procBuf, Z);
nrLDPC_cn2bnProcBuf_BG2(p_lut, cnProcBufRes, bnProcBuf, Z);
}
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->cn2bnProcBuf);
@@ -175,34 +180,34 @@ static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr, int8_t* p_out, t_nrLDP
#ifdef NR_LDPC_DEBUG_MODE
nrLDPC_debug_initBuffer2File(nrLDPC_buffers_BN_PROC);
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_BN_PROC, p_procBuf);
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_BN_PROC, bnProcBuf);
#endif
// BN processing
#ifdef NR_LDPC_PROFILER_DETAIL
start_meas(&p_profiler->bnProcPc);
#endif
nrLDPC_bnProcPc(p_lut, p_procBuf, Z);
nrLDPC_bnProcPc(p_lut, bnProcBuf, bnProcBufRes, llrProcBuf, llrRes, Z);
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->bnProcPc);
#endif
#ifdef NR_LDPC_DEBUG_MODE
nrLDPC_debug_initBuffer2File(nrLDPC_buffers_LLR_RES);
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_LLR_RES, p_procBuf);
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_LLR_RES, llrRes);
#endif
#ifdef NR_LDPC_PROFILER_DETAIL
start_meas(&p_profiler->bnProc);
#endif
nrLDPC_bnProc(p_lut, p_procBuf, Z);
nrLDPC_bnProc(p_lut, bnProcBuf, bnProcBufRes, llrRes, Z);
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->bnProc);
#endif
#ifdef NR_LDPC_DEBUG_MODE
nrLDPC_debug_initBuffer2File(nrLDPC_buffers_BN_PROC_RES);
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_BN_PROC_RES, p_procBuf);
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_BN_PROC_RES, bnProcBufRes);
#endif
// BN results to CN processing buffer
@@ -211,18 +216,18 @@ static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr, int8_t* p_out, t_nrLDP
#endif
if (BG == 1)
{
nrLDPC_bn2cnProcBuf_BG1(p_lut, p_procBuf, Z);
nrLDPC_bn2cnProcBuf_BG1(p_lut, bnProcBufRes, cnProcBuf, Z);
}
else
{
nrLDPC_bn2cnProcBuf_BG2(p_lut, p_procBuf, Z);
nrLDPC_bn2cnProcBuf_BG2(p_lut, bnProcBufRes, cnProcBuf, Z);
}
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->bn2cnProcBuf);
#endif
#ifdef NR_LDPC_DEBUG_MODE
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_CN_PROC, p_procBuf);
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_CN_PROC, cnProcBuf);
#endif
// Parity Check not necessary here since it will fail
@@ -242,18 +247,18 @@ static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr, int8_t* p_out, t_nrLDP
#endif
if (BG == 1)
{
nrLDPC_cnProc_BG1(p_lut, p_procBuf, Z);
nrLDPC_cnProc_BG1(p_lut, cnProcBuf, cnProcBufRes, Z);
}
else
{
nrLDPC_cnProc_BG2(p_lut, p_procBuf, Z);
nrLDPC_cnProc_BG2(p_lut, cnProcBuf, cnProcBufRes, Z);
}
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->cnProc);
#endif
#ifdef NR_LDPC_DEBUG_MODE
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_CN_PROC_RES, p_procBuf);
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_CN_PROC_RES, cnProcBufRes);
#endif
// Send CN results back to BNs
@@ -262,43 +267,43 @@ static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr, int8_t* p_out, t_nrLDP
#endif
if (BG == 1)
{
nrLDPC_cn2bnProcBuf_BG1(p_lut, p_procBuf, Z);
nrLDPC_cn2bnProcBuf_BG1(p_lut, cnProcBufRes, bnProcBuf, Z);
}
else
{
nrLDPC_cn2bnProcBuf_BG2(p_lut, p_procBuf, Z);
nrLDPC_cn2bnProcBuf_BG2(p_lut, cnProcBufRes, bnProcBuf, Z);
}
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->cn2bnProcBuf);
#endif
#ifdef NR_LDPC_DEBUG_MODE
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_BN_PROC, p_procBuf);
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_BN_PROC, bnProcBuf);
#endif
// BN Processing
#ifdef NR_LDPC_PROFILER_DETAIL
start_meas(&p_profiler->bnProcPc);
#endif
nrLDPC_bnProcPc(p_lut, p_procBuf, Z);
nrLDPC_bnProcPc(p_lut, bnProcBuf, bnProcBufRes, llrProcBuf, llrRes, Z);
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->bnProcPc);
#endif
#ifdef NR_LDPC_DEBUG_MODE
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_LLR_RES, p_procBuf);
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_LLR_RES, llrRes);
#endif
#ifdef NR_LDPC_PROFILER_DETAIL
start_meas(&p_profiler->bnProc);
#endif
nrLDPC_bnProc(p_lut, p_procBuf, Z);
nrLDPC_bnProc(p_lut, bnProcBuf, bnProcBufRes, llrRes, Z);
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->bnProc);
#endif
#ifdef NR_LDPC_DEBUG_MODE
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_BN_PROC_RES, p_procBuf);
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_BN_PROC_RES, bnProcBufRes);
#endif
// BN results to CN processing buffer
@@ -307,18 +312,18 @@ static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr, int8_t* p_out, t_nrLDP
#endif
if (BG == 1)
{
nrLDPC_bn2cnProcBuf_BG1(p_lut, p_procBuf, Z);
nrLDPC_bn2cnProcBuf_BG1(p_lut, bnProcBufRes, cnProcBuf, Z);
}
else
{
nrLDPC_bn2cnProcBuf_BG2(p_lut, p_procBuf, Z);
nrLDPC_bn2cnProcBuf_BG2(p_lut, bnProcBufRes, cnProcBuf, Z);
}
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->bn2cnProcBuf);
#endif
#ifdef NR_LDPC_DEBUG_MODE
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_CN_PROC, p_procBuf);
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_CN_PROC, cnProcBuf);
#endif
// Parity Check
@@ -328,123 +333,11 @@ static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr, int8_t* p_out, t_nrLDP
#endif
if (BG == 1)
{
pcRes = nrLDPC_cnProcPc_BG1(p_lut, p_procBuf, Z);
pcRes = nrLDPC_cnProcPc_BG1(p_lut, cnProcBuf, cnProcBufRes, Z);
}
else
{
pcRes = nrLDPC_cnProcPc_BG2(p_lut, p_procBuf, Z);
}
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->cnProcPc);
#endif
#endif
}
// Last iteration
if ( (i < numMaxIter) && (pcRes != 0) )
{
// Increase iteration counter
i++;
// CN processing
#ifdef NR_LDPC_PROFILER_DETAIL
start_meas(&p_profiler->cnProc);
#endif
if (BG == 1)
{
nrLDPC_cnProc_BG1(p_lut, p_procBuf, Z);
}
else
{
nrLDPC_cnProc_BG2(p_lut, p_procBuf, Z);
}
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->cnProc);
#endif
#ifdef NR_LDPC_DEBUG_MODE
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_CN_PROC_RES, p_procBuf);
#endif
// Send CN results back to BNs
#ifdef NR_LDPC_PROFILER_DETAIL
start_meas(&p_profiler->cn2bnProcBuf);
#endif
if (BG == 1)
{
nrLDPC_cn2bnProcBuf_BG1(p_lut, p_procBuf, Z);
}
else
{
nrLDPC_cn2bnProcBuf_BG2(p_lut, p_procBuf, Z);
}
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->cn2bnProcBuf);
#endif
#ifdef NR_LDPC_DEBUG_MODE
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_BN_PROC, p_procBuf);
#endif
// BN Processing
#ifdef NR_LDPC_PROFILER_DETAIL
start_meas(&p_profiler->bnProcPc);
#endif
nrLDPC_bnProcPc(p_lut, p_procBuf, Z);
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->bnProcPc);
#endif
#ifdef NR_LDPC_DEBUG_MODE
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_LLR_RES, p_procBuf);
#endif
// If parity check not enabled, no need to send the BN proc results
// back to CNs
#ifdef NR_LDPC_ENABLE_PARITY_CHECK
#ifdef NR_LDPC_PROFILER_DETAIL
start_meas(&p_profiler->bnProc);
#endif
nrLDPC_bnProc(p_lut, p_procBuf, Z);
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->bnProc);
#endif
#ifdef NR_LDPC_DEBUG_MODE
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_BN_PROC_RES, p_procBuf);
#endif
// BN results to CN processing buffer
#ifdef NR_LDPC_PROFILER_DETAIL
start_meas(&p_profiler->bn2cnProcBuf);
#endif
if (BG == 1)
{
nrLDPC_bn2cnProcBuf_BG1(p_lut, p_procBuf, Z);
}
else
{
nrLDPC_bn2cnProcBuf_BG2(p_lut, p_procBuf, Z);
}
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->bn2cnProcBuf);
#endif
#ifdef NR_LDPC_DEBUG_MODE
nrLDPC_debug_writeBuffer2File(nrLDPC_buffers_CN_PROC, p_procBuf);
#endif
// Parity Check
#ifdef NR_LDPC_PROFILER_DETAIL
start_meas(&p_profiler->cnProcPc);
#endif
if (BG == 1)
{
pcRes = nrLDPC_cnProcPc_BG1(p_lut, p_procBuf, Z);
}
else
{
pcRes = nrLDPC_cnProcPc_BG2(p_lut, p_procBuf, Z);
pcRes = nrLDPC_cnProcPc_BG2(p_lut, cnProcBuf, cnProcBufRes, Z);
}
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->cnProcPc);
@@ -466,7 +359,7 @@ static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr, int8_t* p_out, t_nrLDP
#ifdef NR_LDPC_PROFILER_DETAIL
start_meas(&p_profiler->llrRes2llrOut);
#endif
nrLDPC_llrRes2llrOut(p_lut, p_llrOut, p_procBuf, Z, BG);
nrLDPC_llrRes2llrOut(p_lut, p_llrOut, llrRes, Z, BG);
#ifdef NR_LDPC_PROFILER_DETAIL
stop_meas(&p_profiler->llrRes2llrOut);
#endif