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56dab112
Commit
56dab112
authored
Jul 10, 2012
by
Tomasz Wlostowski
Browse files
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Plain Diff
modules/wr_endpoint: area optimizations in ep_rx_crc_size_check
parent
b995d923
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Showing
3 changed files
with
169 additions
and
36 deletions
+169
-36
Manifest.py
modules/wr_endpoint/Manifest.py
+1
-0
ep_crc32_pkg.vhd
modules/wr_endpoint/ep_crc32_pkg.vhd
+97
-0
ep_rx_crc_size_check.vhd
modules/wr_endpoint/ep_rx_crc_size_check.vhd
+71
-36
No files found.
modules/wr_endpoint/Manifest.py
View file @
56dab112
...
...
@@ -29,6 +29,7 @@ files = [ "endpoint_private_pkg.vhd",
"ep_sync_detect_16bit.vhd"
,
"ep_wishbone_controller.vhd"
,
"ep_registers_pkg.vhd"
,
"ep_crc32_pkg.vhd"
,
"endpoint_pkg.vhd"
,
"wr_endpoint.vhd"
,
"xwr_endpoint.vhd"
...
...
modules/wr_endpoint/ep_crc32_pkg.vhd
0 → 100644
View file @
56dab112
library
ieee
;
use
ieee
.
std_logic_1164
.
all
;
package
ep_crc32_pkg
is
constant
c_CRC32_RESIDUE_FULL
:
std_logic_vector
(
31
downto
0
)
:
=
x"1cdf4421"
;
constant
c_CRC32_RESIDUE_HALF
:
std_logic_vector
(
31
downto
0
)
:
=
x"1df722c6"
;
constant
c_CRC32_INIT_VALUE
:
std_logic_vector
(
31
downto
0
)
:
=
x"00000000"
;
function
f_update_crc32_d16
(
d
:
std_logic_vector
;
data_in
:
std_logic_vector
)
return
std_logic_vector
;
function
f_update_crc32_d8
(
d
:
std_logic_vector
;
data_in
:
std_logic_vector
)
return
std_logic_vector
;
end
ep_crc32_pkg
;
package
body
ep_crc32_pkg
is
function
f_update_crc32_d16
(
d
:
std_logic_vector
;
data_in
:
std_logic_vector
)
return
std_logic_vector
is
variable
q
:
std_logic_vector
(
d
'length
-1
downto
0
);
begin
q
(
7
)
:
=
not
((
not
d
(
23
))
xor
(
not
d
(
17
))
xor
(
not
d
(
30
))
xor
(
not
d
(
29
))
xor
(
not
d
(
27
))
xor
data_in
(
7
)
xor
data_in
(
1
)
xor
data_in
(
14
)
xor
data_in
(
13
)
xor
data_in
(
11
));
q
(
6
)
:
=
not
((
not
d
(
23
))
xor
(
not
d
(
22
))
xor
(
not
d
(
17
))
xor
(
not
d
(
16
))
xor
(
not
d
(
30
))
xor
(
not
d
(
28
))
xor
(
not
d
(
27
))
xor
(
not
d
(
26
))
xor
data_in
(
7
)
xor
data_in
(
6
)
xor
data_in
(
1
)
xor
data_in
(
0
)
xor
data_in
(
14
)
xor
data_in
(
12
)
xor
data_in
(
11
)
xor
data_in
(
10
));
q
(
5
)
:
=
not
((
not
d
(
23
))
xor
(
not
d
(
22
))
xor
(
not
d
(
21
))
xor
(
not
d
(
17
))
xor
(
not
d
(
16
))
xor
(
not
d
(
31
))
xor
(
not
d
(
30
))
xor
(
not
d
(
26
))
xor
(
not
d
(
25
))
xor
data_in
(
7
)
xor
data_in
(
6
)
xor
data_in
(
5
)
xor
data_in
(
1
)
xor
data_in
(
0
)
xor
data_in
(
15
)
xor
data_in
(
14
)
xor
data_in
(
10
)
xor
data_in
(
9
));
q
(
4
)
:
=
not
((
not
d
(
22
))
xor
(
not
d
(
21
))
xor
(
not
d
(
20
))
xor
(
not
d
(
16
))
xor
(
not
d
(
31
))
xor
(
not
d
(
30
))
xor
(
not
d
(
29
))
xor
(
not
d
(
25
))
xor
(
not
d
(
24
))
xor
data_in
(
6
)
xor
data_in
(
5
)
xor
data_in
(
4
)
xor
data_in
(
0
)
xor
data_in
(
15
)
xor
data_in
(
14
)
xor
data_in
(
13
)
xor
data_in
(
9
)
xor
data_in
(
8
));
q
(
3
)
:
=
not
((
not
d
(
23
))
xor
(
not
d
(
21
))
xor
(
not
d
(
20
))
xor
(
not
d
(
19
))
xor
(
not
d
(
17
))
xor
(
not
d
(
31
))
xor
(
not
d
(
28
))
xor
(
not
d
(
27
))
xor
(
not
d
(
24
))
xor
data_in
(
7
)
xor
data_in
(
5
)
xor
data_in
(
4
)
xor
data_in
(
3
)
xor
data_in
(
1
)
xor
data_in
(
15
)
xor
data_in
(
12
)
xor
data_in
(
11
)
xor
data_in
(
8
));
q
(
2
)
:
=
not
((
not
d
(
23
))
xor
(
not
d
(
22
))
xor
(
not
d
(
20
))
xor
(
not
d
(
19
))
xor
(
not
d
(
18
))
xor
(
not
d
(
17
))
xor
(
not
d
(
16
))
xor
(
not
d
(
29
))
xor
(
not
d
(
26
))
xor
data_in
(
7
)
xor
data_in
(
6
)
xor
data_in
(
4
)
xor
data_in
(
3
)
xor
data_in
(
2
)
xor
data_in
(
1
)
xor
data_in
(
0
)
xor
data_in
(
13
)
xor
data_in
(
10
));
q
(
1
)
:
=
not
((
not
d
(
22
))
xor
(
not
d
(
21
))
xor
(
not
d
(
19
))
xor
(
not
d
(
18
))
xor
(
not
d
(
17
))
xor
(
not
d
(
16
))
xor
(
not
d
(
31
))
xor
(
not
d
(
28
))
xor
(
not
d
(
25
))
xor
data_in
(
6
)
xor
data_in
(
5
)
xor
data_in
(
3
)
xor
data_in
(
2
)
xor
data_in
(
1
)
xor
data_in
(
0
)
xor
data_in
(
15
)
xor
data_in
(
12
)
xor
data_in
(
9
));
q
(
0
)
:
=
not
((
not
d
(
23
))
xor
(
not
d
(
21
))
xor
(
not
d
(
20
))
xor
(
not
d
(
18
))
xor
(
not
d
(
16
))
xor
(
not
d
(
31
))
xor
(
not
d
(
29
))
xor
(
not
d
(
24
))
xor
data_in
(
7
)
xor
data_in
(
5
)
xor
data_in
(
4
)
xor
data_in
(
2
)
xor
data_in
(
0
)
xor
data_in
(
15
)
xor
data_in
(
13
)
xor
data_in
(
8
));
q
(
15
)
:
=
not
((
not
d
(
23
))
xor
(
not
d
(
22
))
xor
(
not
d
(
20
))
xor
(
not
d
(
19
))
xor
(
not
d
(
31
))
xor
(
not
d
(
29
))
xor
(
not
d
(
28
))
xor
(
not
d
(
27
))
xor
data_in
(
7
)
xor
data_in
(
6
)
xor
data_in
(
4
)
xor
data_in
(
3
)
xor
data_in
(
15
)
xor
data_in
(
13
)
xor
data_in
(
12
)
xor
data_in
(
11
));
q
(
14
)
:
=
not
((
not
d
(
22
))
xor
(
not
d
(
21
))
xor
(
not
d
(
19
))
xor
(
not
d
(
18
))
xor
(
not
d
(
30
))
xor
(
not
d
(
28
))
xor
(
not
d
(
27
))
xor
(
not
d
(
26
))
xor
data_in
(
6
)
xor
data_in
(
5
)
xor
data_in
(
3
)
xor
data_in
(
2
)
xor
data_in
(
14
)
xor
data_in
(
12
)
xor
data_in
(
11
)
xor
data_in
(
10
));
q
(
13
)
:
=
not
((
not
d
(
23
))
xor
(
not
d
(
21
))
xor
(
not
d
(
20
))
xor
(
not
d
(
18
))
xor
(
not
d
(
30
))
xor
(
not
d
(
26
))
xor
(
not
d
(
25
))
xor
data_in
(
7
)
xor
data_in
(
5
)
xor
data_in
(
4
)
xor
data_in
(
2
)
xor
data_in
(
14
)
xor
data_in
(
10
)
xor
data_in
(
9
));
q
(
12
)
:
=
not
((
not
d
(
23
))
xor
(
not
d
(
22
))
xor
(
not
d
(
20
))
xor
(
not
d
(
19
))
xor
(
not
d
(
30
))
xor
(
not
d
(
27
))
xor
(
not
d
(
25
))
xor
(
not
d
(
24
))
xor
data_in
(
7
)
xor
data_in
(
6
)
xor
data_in
(
4
)
xor
data_in
(
3
)
xor
data_in
(
14
)
xor
data_in
(
11
)
xor
data_in
(
9
)
xor
data_in
(
8
));
q
(
11
)
:
=
not
((
not
d
(
23
))
xor
(
not
d
(
22
))
xor
(
not
d
(
21
))
xor
(
not
d
(
19
))
xor
(
not
d
(
18
))
xor
(
not
d
(
17
))
xor
(
not
d
(
30
))
xor
(
not
d
(
27
))
xor
(
not
d
(
26
))
xor
(
not
d
(
24
))
xor
data_in
(
7
)
xor
data_in
(
6
)
xor
data_in
(
5
)
xor
data_in
(
3
)
xor
data_in
(
2
)
xor
data_in
(
1
)
xor
data_in
(
14
)
xor
data_in
(
11
)
xor
data_in
(
10
)
xor
data_in
(
8
));
q
(
10
)
:
=
not
((
not
d
(
22
))
xor
(
not
d
(
21
))
xor
(
not
d
(
20
))
xor
(
not
d
(
18
))
xor
(
not
d
(
17
))
xor
(
not
d
(
16
))
xor
(
not
d
(
29
))
xor
(
not
d
(
26
))
xor
(
not
d
(
25
))
xor
data_in
(
6
)
xor
data_in
(
5
)
xor
data_in
(
4
)
xor
data_in
(
2
)
xor
data_in
(
1
)
xor
data_in
(
0
)
xor
data_in
(
13
)
xor
data_in
(
10
)
xor
data_in
(
9
));
q
(
9
)
:
=
not
((
not
d
(
21
))
xor
(
not
d
(
20
))
xor
(
not
d
(
19
))
xor
(
not
d
(
17
))
xor
(
not
d
(
16
))
xor
(
not
d
(
31
))
xor
(
not
d
(
28
))
xor
(
not
d
(
25
))
xor
(
not
d
(
24
))
xor
data_in
(
5
)
xor
data_in
(
4
)
xor
data_in
(
3
)
xor
data_in
(
1
)
xor
data_in
(
0
)
xor
data_in
(
15
)
xor
data_in
(
12
)
xor
data_in
(
9
)
xor
data_in
(
8
));
q
(
8
)
:
=
not
((
not
d
(
20
))
xor
(
not
d
(
19
))
xor
(
not
d
(
18
))
xor
(
not
d
(
16
))
xor
(
not
d
(
31
))
xor
(
not
d
(
30
))
xor
(
not
d
(
27
))
xor
(
not
d
(
24
))
xor
data_in
(
4
)
xor
data_in
(
3
)
xor
data_in
(
2
)
xor
data_in
(
0
)
xor
data_in
(
15
)
xor
data_in
(
14
)
xor
data_in
(
11
)
xor
data_in
(
8
));
q
(
23
)
:
=
not
((
not
d
(
7
))
xor
(
not
d
(
23
))
xor
(
not
d
(
19
))
xor
(
not
d
(
18
))
xor
(
not
d
(
31
))
xor
(
not
d
(
27
))
xor
(
not
d
(
26
))
xor
data_in
(
7
)
xor
data_in
(
3
)
xor
data_in
(
2
)
xor
data_in
(
15
)
xor
data_in
(
11
)
xor
data_in
(
10
));
q
(
22
)
:
=
not
((
not
d
(
6
))
xor
(
not
d
(
22
))
xor
(
not
d
(
18
))
xor
(
not
d
(
17
))
xor
(
not
d
(
30
))
xor
(
not
d
(
26
))
xor
(
not
d
(
25
))
xor
data_in
(
6
)
xor
data_in
(
2
)
xor
data_in
(
1
)
xor
data_in
(
14
)
xor
data_in
(
10
)
xor
data_in
(
9
));
q
(
21
)
:
=
not
((
not
d
(
5
))
xor
(
not
d
(
21
))
xor
(
not
d
(
17
))
xor
(
not
d
(
16
))
xor
(
not
d
(
29
))
xor
(
not
d
(
25
))
xor
(
not
d
(
24
))
xor
data_in
(
5
)
xor
data_in
(
1
)
xor
data_in
(
0
)
xor
data_in
(
13
)
xor
data_in
(
9
)
xor
data_in
(
8
));
q
(
20
)
:
=
not
((
not
d
(
4
))
xor
(
not
d
(
20
))
xor
(
not
d
(
16
))
xor
(
not
d
(
31
))
xor
(
not
d
(
28
))
xor
(
not
d
(
24
))
xor
data_in
(
4
)
xor
data_in
(
0
)
xor
data_in
(
15
)
xor
data_in
(
12
)
xor
data_in
(
8
));
q
(
19
)
:
=
not
((
not
d
(
3
))
xor
(
not
d
(
19
))
xor
(
not
d
(
31
))
xor
(
not
d
(
30
))
xor
(
not
d
(
27
))
xor
data_in
(
3
)
xor
data_in
(
15
)
xor
data_in
(
14
)
xor
data_in
(
11
));
q
(
18
)
:
=
not
((
not
d
(
2
))
xor
(
not
d
(
18
))
xor
(
not
d
(
30
))
xor
(
not
d
(
29
))
xor
(
not
d
(
26
))
xor
data_in
(
2
)
xor
data_in
(
14
)
xor
data_in
(
13
)
xor
data_in
(
10
));
q
(
17
)
:
=
not
((
not
d
(
1
))
xor
(
not
d
(
23
))
xor
(
not
d
(
30
))
xor
(
not
d
(
28
))
xor
(
not
d
(
27
))
xor
(
not
d
(
25
))
xor
data_in
(
7
)
xor
data_in
(
14
)
xor
data_in
(
12
)
xor
data_in
(
11
)
xor
data_in
(
9
));
q
(
16
)
:
=
not
((
not
d
(
0
))
xor
(
not
d
(
23
))
xor
(
not
d
(
22
))
xor
(
not
d
(
17
))
xor
(
not
d
(
30
))
xor
(
not
d
(
26
))
xor
(
not
d
(
24
))
xor
data_in
(
7
)
xor
data_in
(
6
)
xor
data_in
(
1
)
xor
data_in
(
14
)
xor
data_in
(
10
)
xor
data_in
(
8
));
q
(
31
)
:
=
not
((
not
d
(
15
))
xor
(
not
d
(
22
))
xor
(
not
d
(
21
))
xor
(
not
d
(
16
))
xor
(
not
d
(
29
))
xor
(
not
d
(
25
))
xor
data_in
(
6
)
xor
data_in
(
5
)
xor
data_in
(
0
)
xor
data_in
(
13
)
xor
data_in
(
9
));
q
(
30
)
:
=
not
((
not
d
(
14
))
xor
(
not
d
(
21
))
xor
(
not
d
(
20
))
xor
(
not
d
(
31
))
xor
(
not
d
(
28
))
xor
(
not
d
(
24
))
xor
data_in
(
5
)
xor
data_in
(
4
)
xor
data_in
(
15
)
xor
data_in
(
12
)
xor
data_in
(
8
));
q
(
29
)
:
=
not
((
not
d
(
13
))
xor
(
not
d
(
23
))
xor
(
not
d
(
20
))
xor
(
not
d
(
19
))
xor
(
not
d
(
17
))
xor
(
not
d
(
29
))
xor
data_in
(
7
)
xor
data_in
(
4
)
xor
data_in
(
3
)
xor
data_in
(
1
)
xor
data_in
(
13
));
q
(
28
)
:
=
not
((
not
d
(
12
))
xor
(
not
d
(
22
))
xor
(
not
d
(
19
))
xor
(
not
d
(
18
))
xor
(
not
d
(
16
))
xor
(
not
d
(
28
))
xor
data_in
(
6
)
xor
data_in
(
3
)
xor
data_in
(
2
)
xor
data_in
(
0
)
xor
data_in
(
12
));
q
(
27
)
:
=
not
((
not
d
(
11
))
xor
(
not
d
(
21
))
xor
(
not
d
(
18
))
xor
(
not
d
(
17
))
xor
(
not
d
(
31
))
xor
(
not
d
(
27
))
xor
data_in
(
5
)
xor
data_in
(
2
)
xor
data_in
(
1
)
xor
data_in
(
15
)
xor
data_in
(
11
));
q
(
26
)
:
=
not
((
not
d
(
10
))
xor
(
not
d
(
20
))
xor
(
not
d
(
17
))
xor
(
not
d
(
16
))
xor
(
not
d
(
30
))
xor
(
not
d
(
26
))
xor
data_in
(
4
)
xor
data_in
(
1
)
xor
data_in
(
0
)
xor
data_in
(
14
)
xor
data_in
(
10
));
q
(
25
)
:
=
not
((
not
d
(
9
))
xor
(
not
d
(
19
))
xor
(
not
d
(
16
))
xor
(
not
d
(
31
))
xor
(
not
d
(
29
))
xor
(
not
d
(
25
))
xor
data_in
(
3
)
xor
data_in
(
0
)
xor
data_in
(
15
)
xor
data_in
(
13
)
xor
data_in
(
9
));
q
(
24
)
:
=
not
((
not
d
(
8
))
xor
(
not
d
(
18
))
xor
(
not
d
(
31
))
xor
(
not
d
(
30
))
xor
(
not
d
(
28
))
xor
(
not
d
(
24
))
xor
data_in
(
2
)
xor
data_in
(
15
)
xor
data_in
(
14
)
xor
data_in
(
12
)
xor
data_in
(
8
));
return
q
;
end
f_update_crc32_d16
;
function
f_update_crc32_d8
(
d
:
std_logic_vector
;
data_in
:
std_logic_vector
)
return
std_logic_vector
is
variable
q
:
std_logic_vector
(
d
'length
-1
downto
0
);
begin
q
(
7
)
:
=
not
((
not
d
(
31
))
xor
(
not
d
(
25
))
xor
data_in
(
7
)
xor
data_in
(
1
));
q
(
6
)
:
=
not
((
not
d
(
31
))
xor
(
not
d
(
30
))
xor
(
not
d
(
25
))
xor
(
not
d
(
24
))
xor
data_in
(
7
)
xor
data_in
(
6
)
xor
data_in
(
1
)
xor
data_in
(
0
));
q
(
5
)
:
=
not
((
not
d
(
31
))
xor
(
not
d
(
30
))
xor
(
not
d
(
29
))
xor
(
not
d
(
25
))
xor
(
not
d
(
24
))
xor
data_in
(
7
)
xor
data_in
(
6
)
xor
data_in
(
5
)
xor
data_in
(
1
)
xor
data_in
(
0
));
q
(
4
)
:
=
not
((
not
d
(
30
))
xor
(
not
d
(
29
))
xor
(
not
d
(
28
))
xor
(
not
d
(
24
))
xor
data_in
(
6
)
xor
data_in
(
5
)
xor
data_in
(
4
)
xor
data_in
(
0
));
q
(
3
)
:
=
not
((
not
d
(
31
))
xor
(
not
d
(
29
))
xor
(
not
d
(
28
))
xor
(
not
d
(
27
))
xor
(
not
d
(
25
))
xor
data_in
(
7
)
xor
data_in
(
5
)
xor
data_in
(
4
)
xor
data_in
(
3
)
xor
data_in
(
1
));
q
(
2
)
:
=
not
((
not
d
(
31
))
xor
(
not
d
(
30
))
xor
(
not
d
(
28
))
xor
(
not
d
(
27
))
xor
(
not
d
(
26
))
xor
(
not
d
(
25
))
xor
(
not
d
(
24
))
xor
data_in
(
7
)
xor
data_in
(
6
)
xor
data_in
(
4
)
xor
data_in
(
3
)
xor
data_in
(
2
)
xor
data_in
(
1
)
xor
data_in
(
0
));
q
(
1
)
:
=
not
((
not
d
(
30
))
xor
(
not
d
(
29
))
xor
(
not
d
(
27
))
xor
(
not
d
(
26
))
xor
(
not
d
(
25
))
xor
(
not
d
(
24
))
xor
data_in
(
6
)
xor
data_in
(
5
)
xor
data_in
(
3
)
xor
data_in
(
2
)
xor
data_in
(
1
)
xor
data_in
(
0
));
q
(
0
)
:
=
not
((
not
d
(
31
))
xor
(
not
d
(
29
))
xor
(
not
d
(
28
))
xor
(
not
d
(
26
))
xor
(
not
d
(
24
))
xor
data_in
(
7
)
xor
data_in
(
5
)
xor
data_in
(
4
)
xor
data_in
(
2
)
xor
data_in
(
0
));
q
(
15
)
:
=
not
((
not
d
(
7
))
xor
(
not
d
(
31
))
xor
(
not
d
(
30
))
xor
(
not
d
(
28
))
xor
(
not
d
(
27
))
xor
data_in
(
7
)
xor
data_in
(
6
)
xor
data_in
(
4
)
xor
data_in
(
3
));
q
(
14
)
:
=
not
((
not
d
(
6
))
xor
(
not
d
(
30
))
xor
(
not
d
(
29
))
xor
(
not
d
(
27
))
xor
(
not
d
(
26
))
xor
data_in
(
6
)
xor
data_in
(
5
)
xor
data_in
(
3
)
xor
data_in
(
2
));
q
(
13
)
:
=
not
((
not
d
(
5
))
xor
(
not
d
(
31
))
xor
(
not
d
(
29
))
xor
(
not
d
(
28
))
xor
(
not
d
(
26
))
xor
data_in
(
7
)
xor
data_in
(
5
)
xor
data_in
(
4
)
xor
data_in
(
2
));
q
(
12
)
:
=
not
((
not
d
(
4
))
xor
(
not
d
(
31
))
xor
(
not
d
(
30
))
xor
(
not
d
(
28
))
xor
(
not
d
(
27
))
xor
data_in
(
7
)
xor
data_in
(
6
)
xor
data_in
(
4
)
xor
data_in
(
3
));
q
(
11
)
:
=
not
((
not
d
(
3
))
xor
(
not
d
(
31
))
xor
(
not
d
(
30
))
xor
(
not
d
(
29
))
xor
(
not
d
(
27
))
xor
(
not
d
(
26
))
xor
(
not
d
(
25
))
xor
data_in
(
7
)
xor
data_in
(
6
)
xor
data_in
(
5
)
xor
data_in
(
3
)
xor
data_in
(
2
)
xor
data_in
(
1
));
q
(
10
)
:
=
not
((
not
d
(
2
))
xor
(
not
d
(
30
))
xor
(
not
d
(
29
))
xor
(
not
d
(
28
))
xor
(
not
d
(
26
))
xor
(
not
d
(
25
))
xor
(
not
d
(
24
))
xor
data_in
(
6
)
xor
data_in
(
5
)
xor
data_in
(
4
)
xor
data_in
(
2
)
xor
data_in
(
1
)
xor
data_in
(
0
));
q
(
9
)
:
=
not
((
not
d
(
1
))
xor
(
not
d
(
29
))
xor
(
not
d
(
28
))
xor
(
not
d
(
27
))
xor
(
not
d
(
25
))
xor
(
not
d
(
24
))
xor
data_in
(
5
)
xor
data_in
(
4
)
xor
data_in
(
3
)
xor
data_in
(
1
)
xor
data_in
(
0
));
q
(
8
)
:
=
not
((
not
d
(
0
))
xor
(
not
d
(
28
))
xor
(
not
d
(
27
))
xor
(
not
d
(
26
))
xor
(
not
d
(
24
))
xor
data_in
(
4
)
xor
data_in
(
3
)
xor
data_in
(
2
)
xor
data_in
(
0
));
q
(
23
)
:
=
not
((
not
d
(
15
))
xor
(
not
d
(
31
))
xor
(
not
d
(
27
))
xor
(
not
d
(
26
))
xor
data_in
(
7
)
xor
data_in
(
3
)
xor
data_in
(
2
));
q
(
22
)
:
=
not
((
not
d
(
14
))
xor
(
not
d
(
30
))
xor
(
not
d
(
26
))
xor
(
not
d
(
25
))
xor
data_in
(
6
)
xor
data_in
(
2
)
xor
data_in
(
1
));
q
(
21
)
:
=
not
((
not
d
(
13
))
xor
(
not
d
(
29
))
xor
(
not
d
(
25
))
xor
(
not
d
(
24
))
xor
data_in
(
5
)
xor
data_in
(
1
)
xor
data_in
(
0
));
q
(
20
)
:
=
not
((
not
d
(
12
))
xor
(
not
d
(
28
))
xor
(
not
d
(
24
))
xor
data_in
(
4
)
xor
data_in
(
0
));
q
(
19
)
:
=
not
((
not
d
(
11
))
xor
(
not
d
(
27
))
xor
data_in
(
3
));
q
(
18
)
:
=
not
((
not
d
(
10
))
xor
(
not
d
(
26
))
xor
data_in
(
2
));
q
(
17
)
:
=
not
((
not
d
(
9
))
xor
(
not
d
(
31
))
xor
data_in
(
7
));
q
(
16
)
:
=
not
((
not
d
(
8
))
xor
(
not
d
(
31
))
xor
(
not
d
(
30
))
xor
(
not
d
(
25
))
xor
data_in
(
7
)
xor
data_in
(
6
)
xor
data_in
(
1
));
q
(
31
)
:
=
not
((
not
d
(
23
))
xor
(
not
d
(
30
))
xor
(
not
d
(
29
))
xor
(
not
d
(
24
))
xor
data_in
(
6
)
xor
data_in
(
5
)
xor
data_in
(
0
));
q
(
30
)
:
=
not
((
not
d
(
22
))
xor
(
not
d
(
29
))
xor
(
not
d
(
28
))
xor
data_in
(
5
)
xor
data_in
(
4
));
q
(
29
)
:
=
not
((
not
d
(
21
))
xor
(
not
d
(
31
))
xor
(
not
d
(
28
))
xor
(
not
d
(
27
))
xor
(
not
d
(
25
))
xor
data_in
(
7
)
xor
data_in
(
4
)
xor
data_in
(
3
)
xor
data_in
(
1
));
q
(
28
)
:
=
not
((
not
d
(
20
))
xor
(
not
d
(
30
))
xor
(
not
d
(
27
))
xor
(
not
d
(
26
))
xor
(
not
d
(
24
))
xor
data_in
(
6
)
xor
data_in
(
3
)
xor
data_in
(
2
)
xor
data_in
(
0
));
q
(
27
)
:
=
not
((
not
d
(
19
))
xor
(
not
d
(
29
))
xor
(
not
d
(
26
))
xor
(
not
d
(
25
))
xor
data_in
(
5
)
xor
data_in
(
2
)
xor
data_in
(
1
));
q
(
26
)
:
=
not
((
not
d
(
18
))
xor
(
not
d
(
28
))
xor
(
not
d
(
25
))
xor
(
not
d
(
24
))
xor
data_in
(
4
)
xor
data_in
(
1
)
xor
data_in
(
0
));
q
(
25
)
:
=
not
((
not
d
(
17
))
xor
(
not
d
(
27
))
xor
(
not
d
(
24
))
xor
data_in
(
3
)
xor
data_in
(
0
));
q
(
24
)
:
=
not
((
not
d
(
16
))
xor
(
not
d
(
26
))
xor
data_in
(
2
));
return
q
;
end
f_update_crc32_d8
;
end
ep_crc32_pkg
;
modules/wr_endpoint/ep_rx_crc_size_check.vhd
View file @
56dab112
...
...
@@ -7,22 +7,27 @@ use work.gencores_pkg.all; -- for gc_crc_gen
use
work
.
endpoint_private_pkg
.
all
;
use
work
.
wr_fabric_pkg
.
all
;
use
work
.
ep_wbgen2_pkg
.
all
;
use
work
.
ep_crc32_pkg
.
all
;
-- 1st deframing pipeline stage - CRC/PCS error/Size checker
entity
ep_rx_crc_size_check
is
port
(
clk_sys_i
:
in
std_logic
;
rst_n_i
:
in
std_logic
;
generic
(
g_use_new_crc
:
boolean
:
=
true
);
port
(
clk_sys_i
:
in
std_logic
;
rst_n_i
:
in
std_logic
;
snk_fab_i
:
in
t_ep_internal_fabric
;
snk_dreq_o
:
out
std_logic
;
snk_fab_i
:
in
t_ep_internal_fabric
;
snk_dreq_o
:
out
std_logic
;
src_fab_o
:
out
t_ep_internal_fabric
;
src_dreq_i
:
in
std_logic
;
src_fab_o
:
out
t_ep_internal_fabric
;
src_dreq_i
:
in
std_logic
;
rmon_o
:
inout
t_rmon_triggers
;
regs_i
:
in
t_ep_out_registers
);
rmon_o
:
inout
t_rmon_triggers
;
regs_i
:
in
t_ep_out_registers
);
end
ep_rx_crc_size_check
;
...
...
@@ -50,9 +55,13 @@ architecture behavioral of ep_rx_crc_size_check is
type
t_state
is
(
ST_WAIT_FRAME
,
ST_DATA
,
ST_OOB
);
signal
crc_gen_enable
:
std_logic
;
signal
crc_gen_reset
:
std_logic
;
signal
crc_match
:
std_logic
;
signal
crc_gen_enable
:
std_logic
;
signal
crc_gen_reset
:
std_logic
;
signal
crc_match
,
crc_match2
:
std_logic
;
signal
crc_cur
:
std_logic_vector
(
31
downto
0
);
signal
crc_in_data
:
std_logic_vector
(
15
downto
0
);
signal
crc_last_is_odd
:
std_logic
;
signal
byte_cntr
:
unsigned
(
13
downto
0
);
signal
is_runt
:
std_logic
;
...
...
@@ -68,31 +77,57 @@ architecture behavioral of ep_rx_crc_size_check is
signal
q_bytesel
:
std_logic
;
signal
q_dvalid_in
:
std_logic
;
signal
q_dvalid_out
:
std_logic
;
signal
q_dreq_out
:
std_logic
;
signal
dvalid_mask
:
std_logic_vector
(
1
downto
0
);
signal
q_dreq_out
:
std_logic
;
signal
dvalid_mask
:
std_logic_vector
(
1
downto
0
);
begin
-- behavioral
crc_gen_reset
<=
snk_fab_i
.
sof
or
(
not
rst_n_i
);
crc_gen_enable
<=
'1'
when
(
snk_fab_i
.
addr
=
c_WRF_DATA
and
snk_fab_i
.
dvalid
=
'1'
)
else
'0'
;
U_rx_crc_generator
:
gc_crc_gen
generic
map
(
g_polynomial
=>
x"04C11DB7"
,
g_init_value
=>
x"ffffffff"
,
g_residue
=>
x"1cdf4421"
,
g_data_width
=>
16
,
g_half_width
=>
8
,
g_sync_reset
=>
1
,
g_dual_width
=>
1
,
g_registered_match_output
=>
false
)
port
map
(
clk_i
=>
clk_sys_i
,
rst_i
=>
crc_gen_reset
,
en_i
=>
crc_gen_enable
,
half_i
=>
snk_fab_i
.
bytesel
,
data_i
=>
snk_fab_i
.
data
(
15
downto
0
),
match_o
=>
crc_match
,
crc_o
=>
open
);
gen_old_crc
:
if
(
g_use_new_crc
=
false
)
generate
U_rx_crc_generator
:
gc_crc_gen
generic
map
(
g_polynomial
=>
x"04C11DB7"
,
g_init_value
=>
x"ffffffff"
,
g_residue
=>
x"1cdf4421"
,
g_data_width
=>
16
,
g_half_width
=>
8
,
g_sync_reset
=>
1
,
g_dual_width
=>
1
,
g_registered_match_output
=>
false
)
port
map
(
clk_i
=>
clk_sys_i
,
rst_i
=>
crc_gen_reset
,
en_i
=>
crc_gen_enable
,
half_i
=>
snk_fab_i
.
bytesel
,
data_i
=>
snk_fab_i
.
data
(
15
downto
0
),
match_o
=>
crc_match
,
crc_o
=>
open
);
end
generate
gen_old_crc
;
gen_new_crc
:
if
(
g_use_new_crc
=
true
)
generate
crc_in_data
(
15
downto
8
)
<=
snk_fab_i
.
data
(
15
downto
8
);
crc_in_data
(
7
downto
0
)
<=
x"00"
when
snk_fab_i
.
bytesel
=
'1'
else
snk_fab_i
.
data
(
7
downto
0
);
p_check_crc
:
process
(
clk_sys_i
)
begin
if
rising_edge
(
clk_sys_i
)
then
if
crc_gen_reset
=
'1'
then
crc_cur
<=
c_CRC32_INIT_VALUE
;
elsif
(
crc_gen_enable
=
'1'
)
then
crc_cur
<=
f_update_crc32_d16
(
crc_cur
,
crc_in_data
);
crc_last_is_odd
<=
snk_fab_i
.
bytesel
;
end
if
;
end
if
;
end
process
;
crc_match
<=
'1'
when
(
crc_last_is_odd
=
'0'
and
crc_cur
=
c_CRC32_RESIDUE_FULL
)
or
(
crc_last_is_odd
=
'1'
and
crc_cur
=
c_CRC32_RESIDUE_HALF
)
else
'0'
;
end
generate
gen_new_crc
;
q_in
(
15
downto
0
)
<=
snk_fab_i
.
data
;
q_in
(
17
downto
16
)
<=
snk_fab_i
.
addr
;
...
...
@@ -116,8 +151,8 @@ begin -- behavioral
empty_o
=>
q_empty
);
snk_dreq_o
<=
q_dreq_out
and
not
(
snk_fab_i
.
eof
or
snk_fab_i
.
error
);
p_count_bytes
:
process
(
clk_sys_i
,
rst_n_i
)
begin
-- process
if
rising_edge
(
clk_sys_i
)
then
...
...
@@ -128,7 +163,7 @@ begin -- behavioral
else
if
(
snk_fab_i
.
sof
=
'1'
)
then
byte_cntr
<=
(
others
=>
'0'
);
is_runt
<=
'1'
;
is_runt
<=
'1'
;
end
if
;
if
(
snk_fab_i
.
dvalid
=
'1'
)
then
...
...
@@ -139,7 +174,7 @@ begin -- behavioral
end
if
;
end
if
;
if
(
byte_cntr
=
to_unsigned
(
c_MIN_FRAME_SIZE
-
2
,
byte_cntr
'length
)
and
snk_fab_i
.
dvalid
=
'1'
and
snk_fab_i
.
bytesel
=
'0'
)
then
if
(
byte_cntr
=
to_unsigned
(
c_MIN_FRAME_SIZE
-
2
,
byte_cntr
'length
)
and
snk_fab_i
.
dvalid
=
'1'
and
snk_fab_i
.
bytesel
=
'0'
)
then
is_runt
<=
'0'
;
end
if
;
...
...
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