forked from pulp-platform/common_cells
-
Notifications
You must be signed in to change notification settings - Fork 1
/
Copy pathpopcount_tb.sv
163 lines (141 loc) · 6.94 KB
/
popcount_tb.sv
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
//-----------------------------------------------------------------------------
// Title : test random vectors for a few different input widths
//-----------------------------------------------------------------------------
// File : popcount_tb.sv
// Author : Manuel Eggimann <[email protected]>
//-----------------------------------------------------------------------------
// Description :
// Tests a few different instantiations of popcount with random vectors
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// Copyright (C) 2013-2018 ETH Zurich, University of Bologna
// Copyright and related rights are licensed under the Solderpad Hardware
// License, Version 0.51 (the "License"); you may not use this file except in
// compliance with the License. You may obtain a copy of the License at
// http://solderpad.org/licenses/SHL-0.51. Unless required by applicable law
// or agreed to in writing, software, hardware and materials distributed under
// this 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.
//-----------------------------------------------------------------------------
`define SV_RAND_CHECK(r) \
do begin \
if (!(r)) begin \
$display("%s:%0d: Randomization failed \"%s\"", `__FILE__, `__LINE__, `"r`"); \
$finish;\
end\
end while (0)
module popcount_tb;
//---------------- Signals connecting to MUT ----------------
logic [4:0] data_w5;
logic [3:0] popcount_w5;
logic [15:0] data_w16;
logic [4:0] popcount_w16;
logic [31:0] data_w32;
logic [5:0] popcount_w32;
logic [63:0] data_w64;
logic [6:0] popcount_w64;
logic [980:0] data_w981;
logic [10:0] popcount_w981;
//--------------------- Instantiate MUT ---------------------
popcount #(.INPUT_WIDTH(5)) i_popcount_w5
(.data_i(data_w5),
.popcount_o(popcount_w5));
popcount #(.INPUT_WIDTH(16)) i_popcount_w16
(.data_i(data_w16),
.popcount_o(popcount_w16));
popcount #(.INPUT_WIDTH(32)) i_popcount_w32
(.data_i(data_w32),
.popcount_o(popcount_w32));
popcount #(.INPUT_WIDTH(64)) i_popcount_w64
(.data_i(data_w64),
.popcount_o(popcount_w64));
popcount #(.INPUT_WIDTH(981)) i_popcount_w981
(.data_i(data_w981),
.popcount_o(popcount_w981));
//---------------------- Test Procedure ----------------------
initial begin
//------------------------------------------------------------
//Test 12 bit popcount
data_w5 = 0;
#5ns;
assert(popcount_w5 == $countones(data_w5)) else $error("Popcount of %b was %d but should be %d.", data_w5, popcount_w5, $countones(data_w5));
data_w5 = 1;
#5ns;
assert(popcount_w5 == $countones(data_w5)) else $error("Popcount of %b was %d but should be %d.", data_w5, popcount_w5, $countones(data_w5));
data_w5 = '1;
#5ns;
assert(popcount_w5 == $countones(data_w5)) else $error("Popcount of %b was %d but should be %d.", data_w5, popcount_w5, $countones(data_w5));
for(int i = 0; i<100; i++)
begin
`SV_RAND_CHECK(randomize(data_w5));
#5ns;
assert(popcount_w5 == $countones(data_w5)) else $error("Popcount of %b was %d but should be %d.", data_w5, popcount_w5, $countones(data_w5));
end
//Test 16 bit popcount
data_w16 = 0;
#5ns;
assert(popcount_w16 == $countones(data_w16)) else $error("Popcount of %b was %d but should be %d.", data_w16, popcount_w16, $countones(data_w16));
data_w16 = 1;
#5ns;
assert(popcount_w16 == $countones(data_w16)) else $error("Popcount of %b was %d but should be %d.", data_w16, popcount_w16, $countones(data_w16));
data_w16 = '1;
#5ns;
assert(popcount_w16 == $countones(data_w16)) else $error("Popcount of %b was %d but should be %d.", data_w16, popcount_w16, $countones(data_w16));
for(int i = 0; i<100; i++)
begin
`SV_RAND_CHECK(randomize(data_w16));
#5ns;
assert(popcount_w16 == $countones(data_w16)) else $error("Popcount of %b was %d but should be %d.", data_w16, popcount_w16, $countones(data_w16));
end
//Test 32 bit popcount
data_w32 = 0;
#5ns;
assert(popcount_w32 == $countones(data_w32)) else $error("Popcount of %b was %d but should be %d.", data_w32, popcount_w32, $countones(data_w32));
data_w32 = 1;
#5ns;
assert(popcount_w32 == $countones(data_w32)) else $error("Popcount of %b was %d but should be %d.", data_w32, popcount_w32, $countones(data_w32));
data_w32 = '1;
#5ns;
assert(popcount_w32 == $countones(data_w32)) else $error("Popcount of %b was %d but should be %d.", data_w32, popcount_w32, $countones(data_w32));
for(int i = 0; i<100; i++)
begin
`SV_RAND_CHECK(randomize(data_w32));
#5ns;
assert(popcount_w32 == $countones(data_w32)) else $error("Popcount of %b was %d but should be %d.", data_w32, popcount_w32, $countones(data_w32));
end
//Test 64 bit popcount
data_w64 = 0;
#5ns;
assert(popcount_w64 == $countones(data_w64)) else $error("Popcount of %b was %d but should be %d.", data_w64, popcount_w64, $countones(data_w64));
data_w64 = 1;
#5ns;
assert(popcount_w64 == $countones(data_w64)) else $error("Popcount of %b was %d but should be %d.", data_w64, popcount_w64, $countones(data_w64));
data_w64 = '1;
#5ns;
assert(popcount_w64 == $countones(data_w64)) else $error("Popcount of %b was %d but should be %d.", data_w64, popcount_w64, $countones(data_w64));
for(int i = 0; i<100; i++)
begin
`SV_RAND_CHECK(randomize(data_w64));
#5ns;
assert(popcount_w64 == $countones(data_w64)) else $error("Popcount of %b was %d but should be %d.", data_w64, popcount_w64, $countones(data_w64));
end
//Test 981 bit popcount
data_w981 = 0;
#5ns;
assert(popcount_w981 == $countones(data_w981)) else $error("Popcount of %b was %d but should be %d.", data_w981, popcount_w981, $countones(data_w981));
data_w981 = 1;
#5ns;
assert(popcount_w981 == $countones(data_w981)) else $error("Popcount of %b was %d but should be %d.", data_w981, popcount_w981, $countones(data_w981));
data_w981 = '1;
#5ns;
assert(popcount_w981 == $countones(data_w981)) else $error("Popcount of %b was %d but should be %d.", data_w981, popcount_w981, $countones(data_w981));
for(int i = 0; i<100; i++)
begin
`SV_RAND_CHECK(randomize(data_w981));
#5ns;
assert(popcount_w981 == $countones(data_w981)) else $error("Popcount of %b was %d but should be %d.", data_w981, popcount_w981, $countones(data_w981));
end
//------------------------------------------------------------
end
endmodule : popcount_tb