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lizhongxiao
OpenXG UE
Commits
baac5638
Commit
baac5638
authored
Nov 01, 2021
by
Eurecom
Browse files
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Plain Diff
integration of Intel SIMD CRC routines for CRC24A/B
parent
870bd409
Changes
1
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1 changed file
with
57 additions
and
7 deletions
+57
-7
openair1/PHY/CODING/crc_byte.c
openair1/PHY/CODING/crc_byte.c
+57
-7
No files found.
openair1/PHY/CODING/crc_byte.c
View file @
baac5638
...
@@ -30,10 +30,14 @@
...
@@ -30,10 +30,14 @@
Modified in June, 2001, to include the length non multiple of 8
Modified in June, 2001, to include the length non multiple of 8
*/
*/
#define USE_INTEL_CRC 1
#include "coding_defs.h"
#include "coding_defs.h"
#include "assertions.h"
#include "assertions.h"
#ifdef USE_INTEL_CRC
#include "crc_intel.h"
#include "crc.h"
#endif
/*ref 36-212 v8.6.0 , pp 8-9 */
/*ref 36-212 v8.6.0 , pp 8-9 */
/* the highest degree is set by default */
/* the highest degree is set by default */
...
@@ -94,6 +98,28 @@ static unsigned short crc11Table[256];
...
@@ -94,6 +98,28 @@ static unsigned short crc11Table[256];
static
unsigned
char
crc8Table
[
256
];
static
unsigned
char
crc8Table
[
256
];
static
unsigned
char
crc6Table
[
256
];
static
unsigned
char
crc6Table
[
256
];
#ifdef USE_INTEL_CRC
static
DECLARE_ALIGNED
(
struct
crc_pclmulqdq_ctx
lte_crc24a_pclmulqdq
,
16
)
=
{
0x64e4d700
,
/**< k1 */
0x2c8c9d00
,
/**< k2 */
0xd9fe8c00
,
/**< k3 */
0xf845fe24
,
/**< q */
0x864cfb00
,
/**< p */
0ULL
/**< res */
};
__m128i
crc_xmm_be_le_swap128
;
DECLARE_ALIGNED
(
const
uint8_t
crc_xmm_shift_tab
[
48
],
16
)
=
{
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0x00
,
0x01
,
0x02
,
0x03
,
0x04
,
0x05
,
0x06
,
0x07
,
0x08
,
0x09
,
0x0a
,
0x0b
,
0x0c
,
0x0d
,
0x0e
,
0x0f
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
};
#endif
void
crcTableInit
(
void
)
void
crcTableInit
(
void
)
{
{
unsigned
char
c
=
0
;
unsigned
char
c
=
0
;
...
@@ -108,14 +134,20 @@ void crcTableInit (void)
...
@@ -108,14 +134,20 @@ void crcTableInit (void)
crc8Table
[
c
]
=
(
unsigned
char
)
(
crcbit
(
&
c
,
1
,
poly8
)
>>
24
);
crc8Table
[
c
]
=
(
unsigned
char
)
(
crcbit
(
&
c
,
1
,
poly8
)
>>
24
);
crc6Table
[
c
]
=
(
unsigned
char
)
(
crcbit
(
&
c
,
1
,
poly6
)
>>
24
);
crc6Table
[
c
]
=
(
unsigned
char
)
(
crcbit
(
&
c
,
1
,
poly6
)
>>
24
);
}
while
(
++
c
);
}
while
(
++
c
);
#ifdef USE_INTEL_CRC
crc_xmm_be_le_swap128
=
_mm_setr_epi32
(
0x0c0d0e0f
,
0x08090a0b
,
0x04050607
,
0x00010203
);
#endif
}
}
/*********************************************************
/*********************************************************
Byte by byte implementations,
Byte by byte
LUT
implementations,
assuming initial byte is 0 padded (in MSB) if necessary
assuming initial byte is 0 padded (in MSB) if necessary
can use SIMD optimized Intel CRC for LTE/NR 24a/24b variants
*********************************************************/
*********************************************************/
unsigned
int
crc24a
(
unsigned
char
*
inptr
,
unsigned
int
crc24a
(
unsigned
char
*
inptr
,
int
bitlen
)
int
bitlen
)
{
{
...
@@ -124,7 +156,7 @@ unsigned int crc24a (unsigned char * inptr,
...
@@ -124,7 +156,7 @@ unsigned int crc24a (unsigned char * inptr,
unsigned
int
crc
=
0
;
unsigned
int
crc
=
0
;
octetlen
=
bitlen
/
8
;
/* Change in octets */
octetlen
=
bitlen
/
8
;
/* Change in octets */
resbit
=
(
bitlen
%
8
);
resbit
=
(
bitlen
%
8
);
#ifndef USE_INTEL_CRC
while
(
octetlen
--
>
0
)
{
while
(
octetlen
--
>
0
)
{
// printf("crc24a: in %x => crc %x\n",crc,*inptr);
// printf("crc24a: in %x => crc %x\n",crc,*inptr);
crc
=
(
crc
<<
8
)
^
crc24aTable
[(
*
inptr
++
)
^
(
crc
>>
24
)];
crc
=
(
crc
<<
8
)
^
crc24aTable
[(
*
inptr
++
)
^
(
crc
>>
24
)];
...
@@ -132,10 +164,24 @@ unsigned int crc24a (unsigned char * inptr,
...
@@ -132,10 +164,24 @@ unsigned int crc24a (unsigned char * inptr,
if
(
resbit
>
0
)
if
(
resbit
>
0
)
crc
=
(
crc
<<
resbit
)
^
crc24aTable
[((
*
inptr
)
>>
(
8
-
resbit
))
^
(
crc
>>
(
32
-
resbit
))];
crc
=
(
crc
<<
resbit
)
^
crc24aTable
[((
*
inptr
)
>>
(
8
-
resbit
))
^
(
crc
>>
(
32
-
resbit
))];
return
crc
;
return
crc
;
#else
return
crc32_calc_pclmulqdq
(
inptr
,
octetlen
,
0
,
&
lte_crc24a_pclmulqdq
)
>>
8
;
#endif
}
}
#ifdef USE_INTEL_CRC
static
DECLARE_ALIGNED
(
struct
crc_pclmulqdq_ctx
lte_crc24b_pclmulqdq
,
16
)
=
{
0x80140500
,
/**< k1 */
0x42000100
,
/**< k2 */
0x90042100
,
/**< k3 */
0xffff83ff
,
/**< q */
0x80006300
,
/**< p */
0ULL
/**< res */
};
#endif
unsigned
int
crc24b
(
unsigned
char
*
inptr
,
unsigned
int
crc24b
(
unsigned
char
*
inptr
,
int
bitlen
)
int
bitlen
)
{
{
...
@@ -143,7 +189,7 @@ unsigned int crc24b (unsigned char * inptr,
...
@@ -143,7 +189,7 @@ unsigned int crc24b (unsigned char * inptr,
unsigned
int
crc
=
0
;
unsigned
int
crc
=
0
;
octetlen
=
bitlen
/
8
;
/* Change in octets */
octetlen
=
bitlen
/
8
;
/* Change in octets */
resbit
=
(
bitlen
%
8
);
resbit
=
(
bitlen
%
8
);
#ifndef USE_INTEL_CRC
while
(
octetlen
--
>
0
)
{
while
(
octetlen
--
>
0
)
{
// printf("crc24b: in %x => crc %x (%x)\n",crc,*inptr,crc24bTable[(*inptr) ^ (crc >> 24)]);
// printf("crc24b: in %x => crc %x (%x)\n",crc,*inptr,crc24bTable[(*inptr) ^ (crc >> 24)]);
crc
=
(
crc
<<
8
)
^
crc24bTable
[(
*
inptr
++
)
^
(
crc
>>
24
)];
crc
=
(
crc
<<
8
)
^
crc24bTable
[(
*
inptr
++
)
^
(
crc
>>
24
)];
...
@@ -153,6 +199,10 @@ unsigned int crc24b (unsigned char * inptr,
...
@@ -153,6 +199,10 @@ unsigned int crc24b (unsigned char * inptr,
crc
=
(
crc
<<
resbit
)
^
crc24bTable
[((
*
inptr
)
>>
(
8
-
resbit
))
^
(
crc
>>
(
32
-
resbit
))];
crc
=
(
crc
<<
resbit
)
^
crc24bTable
[((
*
inptr
)
>>
(
8
-
resbit
))
^
(
crc
>>
(
32
-
resbit
))];
return
crc
;
return
crc
;
#else
return
crc32_calc_pclmulqdq
(
inptr
,
octetlen
,
0
,
&
lte_crc24b_pclmulqdq
)
>>
8
;
#endif
}
}
unsigned
int
crc24c
(
unsigned
char
*
inptr
,
unsigned
int
crc24c
(
unsigned
char
*
inptr
,
...
...
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