1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file openair1/PHY/CODING
* \brief: load library implementing coding/decoding algorithms
* \author Francois TABURET
* \date 2017
* \version 0.1
* \company NOKIA BellLabs France
* \email: francois.taburet@nokia-bell-labs.com
* \note
* \warning
*/
#define _GNU_SOURCE
#include <sys/types.h>
#include "PHY/defs.h"
#include "PHY/extern.h"
#include "common/utils/load_module_shlib.h"
#include "common/utils/telnetsrv/telnetsrv.h"
static int coding_setmod_cmd(char *buff, int debug, telnet_printfunc_t prnt);
static telnetshell_cmddef_t coding_cmdarray[] = {
{"mode","[sse,avx2,stdc,none]",coding_setmod_cmd},
{"","",NULL},
};
telnetshell_vardef_t coding_vardef[] = {
{"maxiter",TELNET_VARTYPE_INT32,&max_turbo_iterations},
{"",0,NULL}
};
/* PHY/defs.h contains MODE_DECODE_XXX macros, following table must match */
static char *modedesc[] = {"none","sse","C","avx2"};
static int curmode;
/* function description array, to be used when loading the encoding/decoding shared lib */
loader_shlibfunc_t shlib_fdesc[DECODE_NUM_FPTR];
/* encoding decoding functions pointers, filled here and used when encoding/decoding */
/*defined as extern in PHY?CODING/extern.h */
decoder_if_t decoder16;
decoder_if_t decoder8;
encoder_if_t encoder;
extern int _may_i_use_cpu_feature(unsigned __int64);
uint8_t nodecod(short *y,
short *y2,
unsigned char *decoded_bytes,
unsigned char *decoded_bytes2,
unsigned short n,
unsigned short f1,
unsigned short f2,
unsigned char max_iterations,
unsigned char crc_type,
unsigned char F,
time_stats_t *init_stats,
time_stats_t *alpha_stats,
time_stats_t *beta_stats,
time_stats_t *gamma_stats,
time_stats_t *ext_stats,
time_stats_t *intl1_stats,
time_stats_t *intl2_stats)
{
return max_iterations+1;
};
void decoding_setmode (int mode) {
switch (mode) {
case MODE_DECODE_NONE:
decoder8=nodecod;
decoder16=nodecod;
encoder=(encoder_if_t)shlib_fdesc[ENCODE_C_FPTRIDX].fptr;
break;
case MODE_DECODE_C:
decoder16=(decoder_if_t)shlib_fdesc[DECODE_TD_C_FPTRIDX].fptr;
decoder8=(decoder_if_t)shlib_fdesc[DECODE_TD_C_FPTRIDX].fptr;
encoder=(encoder_if_t)shlib_fdesc[ENCODE_C_FPTRIDX].fptr;
break;
case MODE_DECODE_AVX2:
decoder16=(decoder_if_t)shlib_fdesc[DECODE_TD16_AVX2_FPTRIDX].fptr;
decoder8=(decoder_if_t)shlib_fdesc[DECODE_TD8_SSE_FPTRIDX].fptr;
encoder=(encoder_if_t)shlib_fdesc[ENCODE_SSE_FPTRIDX].fptr;
break;
default:
mode=MODE_DECODE_SSE;
case MODE_DECODE_SSE:
decoder8=(decoder_if_t)shlib_fdesc[DECODE_TD8_SSE_FPTRIDX].fptr;
decoder16=(decoder_if_t)shlib_fdesc[DECODE_TD16_SSE_FPTRIDX].fptr;
encoder=(encoder_if_t)shlib_fdesc[ENCODE_SSE_FPTRIDX].fptr;
break;
}
curmode=mode;
}
int load_codinglib(void) {
int ret;
memset(shlib_fdesc,0,sizeof(shlib_fdesc));
shlib_fdesc[DECODE_INITTD8_SSE_FPTRIDX].fname = "init_td8";
shlib_fdesc[DECODE_INITTD16_SSE_FPTRIDX].fname= "init_td16";
shlib_fdesc[DECODE_INITTD_AVX2_FPTRIDX].fname="init_td16avx2";
shlib_fdesc[DECODE_TD8_SSE_FPTRIDX].fname= "phy_threegpplte_turbo_decoder8";
shlib_fdesc[DECODE_TD16_SSE_FPTRIDX].fname= "phy_threegpplte_turbo_decoder16";
shlib_fdesc[DECODE_TD_C_FPTRIDX].fname= "phy_threegpplte_turbo_decoder_scalar";
shlib_fdesc[DECODE_TD16_AVX2_FPTRIDX].fname= "phy_threegpplte_turbo_decoder16avx2";
shlib_fdesc[DECODE_FREETD8_FPTRIDX].fname = "free_td8";
shlib_fdesc[DECODE_FREETD16_FPTRIDX].fname= "free_td16";
shlib_fdesc[DECODE_FREETD_AVX2_FPTRIDX].fname= "free_td16avx2";
shlib_fdesc[ENCODE_SSE_FPTRIDX].fname= "threegpplte_turbo_encoder_sse";
shlib_fdesc[ENCODE_C_FPTRIDX].fname= "threegpplte_turbo_encoder";
shlib_fdesc[ENCODE_INIT_SSE_FPTRIDX].fname= "init_encoder_sse";
ret=load_module_shlib("coding",shlib_fdesc,DECODE_NUM_FPTR);
if (ret < 0) exit_fun("Error loading coding library");
/* execute encoder/decoder init functions */
shlib_fdesc[DECODE_INITTD8_SSE_FPTRIDX].fptr();
shlib_fdesc[DECODE_INITTD16_SSE_FPTRIDX].fptr();
if(shlib_fdesc[DECODE_INITTD_AVX2_FPTRIDX].fptr != NULL) {
shlib_fdesc[DECODE_INITTD_AVX2_FPTRIDX].fptr();
}
if(shlib_fdesc[ENCODE_INIT_SSE_FPTRIDX].fptr != NULL) {
shlib_fdesc[ENCODE_INIT_SSE_FPTRIDX].fptr();
}
decoding_setmode(MODE_DECODE_SSE);
/* look for telnet server, if it is loaded, add the coding commands to it */
add_telnetcmd_func_t addcmd = (add_telnetcmd_func_t)get_shlibmodule_fptr("telnetsrv", TELNET_ADDCMD_FNAME);
if (addcmd != NULL) {
addcmd("coding",coding_vardef,coding_cmdarray);
}
return 0;
}
void free_codinglib(void) {
shlib_fdesc[DECODE_FREETD8_FPTRIDX].fptr();
shlib_fdesc[DECODE_FREETD16_FPTRIDX].fptr();
shlib_fdesc[DECODE_FREETD_AVX2_FPTRIDX].fptr();
}
/* functions for telnet support, when telnet server is loaded */
int coding_setmod_cmd(char *buff, int debug, telnet_printfunc_t prnt)
{
if (debug > 0)
prnt( "coding_setmod_cmd received %s\n",buff);
if (strcasestr(buff,"sse") != NULL) {
decoding_setmode(MODE_DECODE_SSE);
} else if (strcasestr(buff,"avx2") != NULL) {
decoding_setmode(MODE_DECODE_AVX2);
} else if (strcasestr(buff,"stdc") != NULL) {
decoding_setmode(MODE_DECODE_C);
} else if (strcasestr(buff,"none") != NULL) {
decoding_setmode(MODE_DECODE_NONE);
} else {
prnt("%s: wrong setmod parameter...\n",buff);
}
prnt("Coding and decoding current mode: %s\n",modedesc[curmode]);
return 0;
}