Line Coverage for Module :
prim_arbiter_ppc ( parameter N=3,DW=75,EnDataPort=1,IdxW=2 + N=5,DW=75,EnDataPort=1,IdxW=3 )
Line Coverage for Module self-instances :
| Line No. | Total | Covered | Percent |
TOTAL | | 22 | 22 | 100.00 |
CONT_ASSIGN | 55 | 0 | 0 | |
CONT_ASSIGN | 75 | 1 | 1 | 100.00 |
CONT_ASSIGN | 76 | 1 | 1 | 100.00 |
ALWAYS | 82 | 3 | 3 | 100.00 |
CONT_ASSIGN | 89 | 1 | 1 | 100.00 |
CONT_ASSIGN | 90 | 1 | 1 | 100.00 |
CONT_ASSIGN | 92 | 1 | 1 | 100.00 |
CONT_ASSIGN | 94 | 1 | 1 | 100.00 |
ALWAYS | 96 | 5 | 5 | 100.00 |
ALWAYS | 109 | 4 | 4 | 100.00 |
ALWAYS | 124 | 4 | 4 | 100.00 |
54 logic unused_req_chk;
55 unreachable assign unused_req_chk = req_chk_i;
56
57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0)
58
59 // this case is basically just a bypass
60 if (N == 1) begin : gen_degenerate_case
61
62 assign valid_o = req_i[0];
63 assign data_o = data_i[0];
64 assign gnt_o[0] = valid_o & ready_i;
65 assign idx_o = '0;
66
67 end else begin : gen_normal_case
68
69 logic [N-1:0] masked_req;
70 logic [N-1:0] ppc_out;
71 logic [N-1:0] arb_req;
72 logic [N-1:0] mask, mask_next;
73 logic [N-1:0] winner;
74
75 1/1 assign masked_req = mask & req_i;
Tests: T1 T2 T3
76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i;
Tests: T1 T2 T3
77
78 // PPC
79 // Even below code looks O(n) but DC optimizes it to O(log(N))
80 // Using Parallel Prefix Computation
81 always_comb begin
82 1/1 ppc_out[0] = arb_req[0];
Tests: T1 T2 T3
83 1/1 for (int i = 1 ; i < N ; i++) begin
Tests: T1 T2 T3
84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i];
Tests: T1 T2 T3
85 end
86 end
87
88 // Grant Generation: Leading-One detector
89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
90 1/1 assign gnt_o = (ready_i) ? winner : '0;
Tests: T1 T2 T3
91
92 1/1 assign valid_o = |req_i;
Tests: T1 T2 T3
93 // Mask Generation
94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
95 always_ff @(posedge clk_i or negedge rst_ni) begin
96 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
97 1/1 mask <= '0;
Tests: T1 T2 T3
98 1/1 end else if (valid_o && ready_i) begin
Tests: T1 T2 T3
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T3 T5 T6
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T1 T2 T3
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 unreachable mask <= ppc_out;
104 end
MISSING_ELSE
105 end
106
107 if (EnDataPort == 1) begin: gen_datapath
108 always_comb begin
109 1/1 data_o = '0;
Tests: T1 T2 T3
110 1/1 for (int i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
111 1/1 if (winner[i]) begin
Tests: T1 T2 T3
112 1/1 data_o = data_i[i];
Tests: T3 T5 T6
113 end
MISSING_ELSE
114 end
115 end
116 end else begin: gen_nodatapath
117 assign data_o = '1;
118 // The following signal is used to avoid possible lint errors.
119 logic [DW-1:0] unused_data [N];
120 assign unused_data = data_i;
121 end
122
123 always_comb begin
124 1/1 idx_o = '0;
Tests: T1 T2 T3
125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
126 1/1 if (winner[i]) begin
Tests: T1 T2 T3
127 1/1 idx_o = i[IdxW-1:0];
Tests: T3 T5 T6
128 end
MISSING_ELSE
Line Coverage for Module :
prim_arbiter_ppc ( parameter N=2,DW=75,EnDataPort=1,IdxW=1 )
Line Coverage for Module self-instances :
| Line No. | Total | Covered | Percent |
TOTAL | | 22 | 22 | 100.00 |
CONT_ASSIGN | 55 | 0 | 0 | |
CONT_ASSIGN | 75 | 1 | 1 | 100.00 |
CONT_ASSIGN | 76 | 1 | 1 | 100.00 |
ALWAYS | 82 | 3 | 3 | 100.00 |
CONT_ASSIGN | 89 | 1 | 1 | 100.00 |
CONT_ASSIGN | 90 | 1 | 1 | 100.00 |
CONT_ASSIGN | 92 | 1 | 1 | 100.00 |
CONT_ASSIGN | 94 | 1 | 1 | 100.00 |
ALWAYS | 96 | 5 | 5 | 100.00 |
ALWAYS | 109 | 4 | 4 | 100.00 |
ALWAYS | 124 | 4 | 4 | 100.00 |
54 logic unused_req_chk;
55 unreachable assign unused_req_chk = req_chk_i;
56
57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0)
58
59 // this case is basically just a bypass
60 if (N == 1) begin : gen_degenerate_case
61
62 assign valid_o = req_i[0];
63 assign data_o = data_i[0];
64 assign gnt_o[0] = valid_o & ready_i;
65 assign idx_o = '0;
66
67 end else begin : gen_normal_case
68
69 logic [N-1:0] masked_req;
70 logic [N-1:0] ppc_out;
71 logic [N-1:0] arb_req;
72 logic [N-1:0] mask, mask_next;
73 logic [N-1:0] winner;
74
75 1/1 assign masked_req = mask & req_i;
Tests: T1 T2 T3
76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i;
Tests: T1 T2 T3
77
78 // PPC
79 // Even below code looks O(n) but DC optimizes it to O(log(N))
80 // Using Parallel Prefix Computation
81 always_comb begin
82 1/1 ppc_out[0] = arb_req[0];
Tests: T1 T2 T3
83 1/1 for (int i = 1 ; i < N ; i++) begin
Tests: T1 T2 T3
84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i];
Tests: T1 T2 T3
85 end
86 end
87
88 // Grant Generation: Leading-One detector
89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
90 1/1 assign gnt_o = (ready_i) ? winner : '0;
Tests: T1 T2 T3
91
92 1/1 assign valid_o = |req_i;
Tests: T1 T2 T3
93 // Mask Generation
94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
95 always_ff @(posedge clk_i or negedge rst_ni) begin
96 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
97 1/1 mask <= '0;
Tests: T1 T2 T3
98 1/1 end else if (valid_o && ready_i) begin
Tests: T4 T5 T6
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T5 T6 T27
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T4 T5 T6
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 unreachable mask <= ppc_out;
104 end
MISSING_ELSE
105 end
106
107 if (EnDataPort == 1) begin: gen_datapath
108 always_comb begin
109 1/1 data_o = '0;
Tests: T1 T2 T3
110 1/1 for (int i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
111 1/1 if (winner[i]) begin
Tests: T1 T2 T3
112 1/1 data_o = data_i[i];
Tests: T5 T6 T27
113 end
MISSING_ELSE
114 end
115 end
116 end else begin: gen_nodatapath
117 assign data_o = '1;
118 // The following signal is used to avoid possible lint errors.
119 logic [DW-1:0] unused_data [N];
120 assign unused_data = data_i;
121 end
122
123 always_comb begin
124 1/1 idx_o = '0;
Tests: T1 T2 T3
125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
126 1/1 if (winner[i]) begin
Tests: T1 T2 T3
127 1/1 idx_o = i[IdxW-1:0];
Tests: T5 T6 T27
128 end
MISSING_ELSE
Cond Coverage for Module :
prim_arbiter_ppc ( parameter N=2,DW=75,EnDataPort=1,IdxW=1 )
Cond Coverage for Module self-instances :
| Total | Covered | Percent |
Conditions | 9 | 7 | 77.78 |
Logical | 9 | 7 | 77.78 |
Non-Logical | 0 | 0 | |
Event | 0 | 0 | |
LINE 76
EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
---------------1---------------
-1- | Status | Tests |
0 | Covered | T1,T2,T3 |
1 | Not Covered | |
LINE 84
EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
----------------1--------------- -------------2------------
-1- | -2- | Status | Tests |
0 | 0 | Covered | T1,T2,T3 |
0 | 1 | Covered | T6,T27,T28 |
1 | 0 | Covered | T5,T6,T27 |
LINE 90
EXPRESSION (ready_i ? gen_normal_case.winner : '0)
---1---
-1- | Status | Tests |
0 | Unreachable | |
1 | Covered | T1,T2,T3 |
LINE 98
EXPRESSION (valid_o && ready_i)
---1--- ---2---
-1- | -2- | Status | Tests |
0 | 1 | Covered | T4,T5,T6 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T5,T6,T27 |
LINE 101
EXPRESSION (valid_o && ((!ready_i)))
---1--- ------2-----
-1- | -2- | Status | Tests |
0 | 1 | Unreachable | |
1 | 0 | Not Covered | |
1 | 1 | Unreachable | |
Cond Coverage for Module :
prim_arbiter_ppc ( parameter N=3,DW=75,EnDataPort=1,IdxW=2 )
Cond Coverage for Module self-instances :
| Total | Covered | Percent |
Conditions | 9 | 8 | 88.89 |
Logical | 9 | 8 | 88.89 |
Non-Logical | 0 | 0 | |
Event | 0 | 0 | |
LINE 76
EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
---------------1---------------
-1- | Status | Tests |
0 | Covered | T1,T2,T3 |
1 | Covered | T19,T32,T54 |
LINE 84
EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
----------------1--------------- -------------2------------
-1- | -2- | Status | Tests |
0 | 0 | Covered | T1,T2,T3 |
0 | 1 | Covered | T19,T32,T54 |
1 | 0 | Covered | T19,T32,T54 |
LINE 90
EXPRESSION (ready_i ? gen_normal_case.winner : '0)
---1---
-1- | Status | Tests |
0 | Unreachable | |
1 | Covered | T1,T2,T3 |
LINE 98
EXPRESSION (valid_o && ready_i)
---1--- ---2---
-1- | -2- | Status | Tests |
0 | 1 | Covered | T7,T8,T9 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T19,T32,T54 |
LINE 101
EXPRESSION (valid_o && ((!ready_i)))
---1--- ------2-----
-1- | -2- | Status | Tests |
0 | 1 | Unreachable | |
1 | 0 | Not Covered | |
1 | 1 | Unreachable | |
Cond Coverage for Module :
prim_arbiter_ppc ( parameter N=5,DW=75,EnDataPort=1,IdxW=3 )
Cond Coverage for Module self-instances :
| Total | Covered | Percent |
Conditions | 9 | 8 | 88.89 |
Logical | 9 | 8 | 88.89 |
Non-Logical | 0 | 0 | |
Event | 0 | 0 | |
LINE 76
EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
---------------1---------------
-1- | Status | Tests |
0 | Covered | T1,T2,T3 |
1 | Covered | T3,T6,T25 |
LINE 84
EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
----------------1--------------- -------------2------------
-1- | -2- | Status | Tests |
0 | 0 | Covered | T1,T2,T3 |
0 | 1 | Covered | T3,T5,T6 |
1 | 0 | Covered | T3,T6,T7 |
LINE 90
EXPRESSION (ready_i ? gen_normal_case.winner : '0)
---1---
-1- | Status | Tests |
0 | Unreachable | |
1 | Covered | T1,T2,T3 |
LINE 98
EXPRESSION (valid_o && ready_i)
---1--- ---2---
-1- | -2- | Status | Tests |
0 | 1 | Covered | T1,T2,T3 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T3,T5,T6 |
LINE 101
EXPRESSION (valid_o && ((!ready_i)))
---1--- ------2-----
-1- | -2- | Status | Tests |
0 | 1 | Unreachable | |
1 | 0 | Not Covered | |
1 | 1 | Unreachable | |
Branch Coverage for Module :
prim_arbiter_ppc
| Line No. | Total | Covered | Percent |
Branches |
|
10 |
10 |
100.00 |
TERNARY |
76 |
2 |
2 |
100.00 |
TERNARY |
90 |
1 |
1 |
100.00 |
IF |
96 |
3 |
3 |
100.00 |
IF |
126 |
2 |
2 |
100.00 |
IF |
111 |
2 |
2 |
100.00 |
76 assign arb_req = (|masked_req) ? masked_req : req_i;
-1-
==>
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T3,T6,T25 |
0 |
Covered |
T1,T2,T3 |
90 assign gnt_o = (ready_i) ? winner : '0;
-1-
==>
==> (Unreachable)
Branches:
-1- | Status | Tests |
1 |
Covered |
T1,T2,T3 |
0 |
Unreachable |
|
96 if (!rst_ni) begin
-1-
97 mask <= '0;
==>
98 end else if (valid_o && ready_i) begin
-2-
99 // Latch only when requests accepted
100 mask <= mask_next;
==>
101 end else if (valid_o && !ready_i) begin
-3-
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 mask <= ppc_out;
==> (Unreachable)
104 end
MISSING_ELSE
==>
Branches:
-1- | -2- | -3- | Status | Tests |
1 |
- |
- |
Covered |
T1,T2,T3 |
0 |
1 |
- |
Covered |
T3,T5,T6 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T1,T4,T5 |
126 if (winner[i]) begin
-1-
127 idx_o = i[IdxW-1:0];
==>
128 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T3,T5,T6 |
0 |
Covered |
T1,T2,T3 |
111 if (winner[i]) begin
-1-
112 data_o = data_i[i];
==>
113 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T3,T5,T6 |
0 |
Covered |
T1,T2,T3 |
Assert Coverage for Module :
prim_arbiter_ppc
Assertion Details
CheckHotOne_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
710807059 |
562948224 |
0 |
0 |
T1 |
1548 |
1484 |
0 |
0 |
T2 |
999 |
912 |
0 |
0 |
T3 |
1783 |
1683 |
0 |
0 |
T4 |
1353 |
1296 |
0 |
0 |
T5 |
1197 |
1127 |
0 |
0 |
T6 |
135093 |
132926 |
0 |
0 |
T7 |
158865 |
127736 |
0 |
0 |
T8 |
34789 |
24214 |
0 |
0 |
T9 |
71645 |
62672 |
0 |
0 |
T10 |
659391 |
545294 |
0 |
0 |
T11 |
29280 |
14640 |
0 |
0 |
T12 |
10784 |
5392 |
0 |
0 |
T13 |
187816 |
93738 |
0 |
0 |
T14 |
16979 |
16979 |
0 |
0 |
T17 |
0 |
2128 |
0 |
0 |
T26 |
1159 |
1008 |
0 |
0 |
T27 |
3656 |
3656 |
0 |
0 |
T28 |
0 |
220328 |
0 |
0 |
T29 |
0 |
91744 |
0 |
0 |
T30 |
0 |
145112 |
0 |
0 |
T32 |
0 |
145392 |
0 |
0 |
CheckNGreaterZero_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
2928 |
2928 |
0 |
0 |
T1 |
3 |
3 |
0 |
0 |
T2 |
3 |
3 |
0 |
0 |
T3 |
3 |
3 |
0 |
0 |
T4 |
3 |
3 |
0 |
0 |
T5 |
3 |
3 |
0 |
0 |
T6 |
3 |
3 |
0 |
0 |
T7 |
3 |
3 |
0 |
0 |
T8 |
3 |
3 |
0 |
0 |
T9 |
3 |
3 |
0 |
0 |
T10 |
3 |
3 |
0 |
0 |
GntImpliesReady_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
710807059 |
3542491 |
0 |
0 |
T3 |
1783 |
200 |
0 |
0 |
T4 |
1281 |
0 |
0 |
0 |
T5 |
1197 |
3 |
0 |
0 |
T6 |
135093 |
2412 |
0 |
0 |
T7 |
127807 |
832 |
0 |
0 |
T8 |
24309 |
832 |
0 |
0 |
T9 |
62757 |
832 |
0 |
0 |
T10 |
549720 |
0 |
0 |
0 |
T11 |
21816 |
832 |
0 |
0 |
T12 |
19375 |
1088 |
0 |
0 |
T13 |
93908 |
832 |
0 |
0 |
T14 |
16979 |
832 |
0 |
0 |
T19 |
54696 |
264 |
0 |
0 |
T27 |
0 |
174 |
0 |
0 |
T28 |
0 |
2612 |
0 |
0 |
T29 |
95700 |
0 |
0 |
0 |
T30 |
277088 |
3521 |
0 |
0 |
T32 |
305619 |
5317 |
0 |
0 |
T33 |
1343 |
0 |
0 |
0 |
T34 |
0 |
70 |
0 |
0 |
T45 |
15496 |
0 |
0 |
0 |
T49 |
0 |
1459 |
0 |
0 |
T51 |
108824 |
0 |
0 |
0 |
T54 |
0 |
4067 |
0 |
0 |
T55 |
2080 |
0 |
0 |
0 |
T56 |
61949 |
0 |
0 |
0 |
T63 |
0 |
3914 |
0 |
0 |
T64 |
0 |
241 |
0 |
0 |
T65 |
0 |
2982 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
710807059 |
3542491 |
0 |
0 |
T3 |
1783 |
200 |
0 |
0 |
T4 |
1281 |
0 |
0 |
0 |
T5 |
1197 |
3 |
0 |
0 |
T6 |
135093 |
2412 |
0 |
0 |
T7 |
127807 |
832 |
0 |
0 |
T8 |
24309 |
832 |
0 |
0 |
T9 |
62757 |
832 |
0 |
0 |
T10 |
549720 |
0 |
0 |
0 |
T11 |
21816 |
832 |
0 |
0 |
T12 |
19375 |
1088 |
0 |
0 |
T13 |
93908 |
832 |
0 |
0 |
T14 |
16979 |
832 |
0 |
0 |
T19 |
54696 |
264 |
0 |
0 |
T27 |
0 |
174 |
0 |
0 |
T28 |
0 |
2612 |
0 |
0 |
T29 |
95700 |
0 |
0 |
0 |
T30 |
277088 |
3521 |
0 |
0 |
T32 |
305619 |
5317 |
0 |
0 |
T33 |
1343 |
0 |
0 |
0 |
T34 |
0 |
70 |
0 |
0 |
T45 |
15496 |
0 |
0 |
0 |
T49 |
0 |
1459 |
0 |
0 |
T51 |
108824 |
0 |
0 |
0 |
T54 |
0 |
4067 |
0 |
0 |
T55 |
2080 |
0 |
0 |
0 |
T56 |
61949 |
0 |
0 |
0 |
T63 |
0 |
3914 |
0 |
0 |
T64 |
0 |
241 |
0 |
0 |
T65 |
0 |
2982 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
710807059 |
562948224 |
0 |
0 |
T1 |
1548 |
1484 |
0 |
0 |
T2 |
999 |
912 |
0 |
0 |
T3 |
1783 |
1683 |
0 |
0 |
T4 |
1353 |
1296 |
0 |
0 |
T5 |
1197 |
1127 |
0 |
0 |
T6 |
135093 |
132926 |
0 |
0 |
T7 |
158865 |
127736 |
0 |
0 |
T8 |
34789 |
24214 |
0 |
0 |
T9 |
71645 |
62672 |
0 |
0 |
T10 |
659391 |
545294 |
0 |
0 |
T11 |
29280 |
14640 |
0 |
0 |
T12 |
10784 |
5392 |
0 |
0 |
T13 |
187816 |
93738 |
0 |
0 |
T14 |
16979 |
16979 |
0 |
0 |
T17 |
0 |
2128 |
0 |
0 |
T26 |
1159 |
1008 |
0 |
0 |
T27 |
3656 |
3656 |
0 |
0 |
T28 |
0 |
220328 |
0 |
0 |
T29 |
0 |
91744 |
0 |
0 |
T30 |
0 |
145112 |
0 |
0 |
T32 |
0 |
145392 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
710807059 |
562948224 |
0 |
0 |
T1 |
1548 |
1484 |
0 |
0 |
T2 |
999 |
912 |
0 |
0 |
T3 |
1783 |
1683 |
0 |
0 |
T4 |
1353 |
1296 |
0 |
0 |
T5 |
1197 |
1127 |
0 |
0 |
T6 |
135093 |
132926 |
0 |
0 |
T7 |
158865 |
127736 |
0 |
0 |
T8 |
34789 |
24214 |
0 |
0 |
T9 |
71645 |
62672 |
0 |
0 |
T10 |
659391 |
545294 |
0 |
0 |
T11 |
29280 |
14640 |
0 |
0 |
T12 |
10784 |
5392 |
0 |
0 |
T13 |
187816 |
93738 |
0 |
0 |
T14 |
16979 |
16979 |
0 |
0 |
T17 |
0 |
2128 |
0 |
0 |
T26 |
1159 |
1008 |
0 |
0 |
T27 |
3656 |
3656 |
0 |
0 |
T28 |
0 |
220328 |
0 |
0 |
T29 |
0 |
91744 |
0 |
0 |
T30 |
0 |
145112 |
0 |
0 |
T32 |
0 |
145392 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
710807059 |
3542491 |
0 |
0 |
T3 |
1783 |
200 |
0 |
0 |
T4 |
1281 |
0 |
0 |
0 |
T5 |
1197 |
3 |
0 |
0 |
T6 |
135093 |
2412 |
0 |
0 |
T7 |
127807 |
832 |
0 |
0 |
T8 |
24309 |
832 |
0 |
0 |
T9 |
62757 |
832 |
0 |
0 |
T10 |
549720 |
0 |
0 |
0 |
T11 |
21816 |
832 |
0 |
0 |
T12 |
19375 |
1088 |
0 |
0 |
T13 |
93908 |
832 |
0 |
0 |
T14 |
16979 |
832 |
0 |
0 |
T19 |
54696 |
264 |
0 |
0 |
T27 |
0 |
174 |
0 |
0 |
T28 |
0 |
2612 |
0 |
0 |
T29 |
95700 |
0 |
0 |
0 |
T30 |
277088 |
3521 |
0 |
0 |
T32 |
305619 |
5317 |
0 |
0 |
T33 |
1343 |
0 |
0 |
0 |
T34 |
0 |
70 |
0 |
0 |
T45 |
15496 |
0 |
0 |
0 |
T49 |
0 |
1459 |
0 |
0 |
T51 |
108824 |
0 |
0 |
0 |
T54 |
0 |
4067 |
0 |
0 |
T55 |
2080 |
0 |
0 |
0 |
T56 |
61949 |
0 |
0 |
0 |
T63 |
0 |
3914 |
0 |
0 |
T64 |
0 |
241 |
0 |
0 |
T65 |
0 |
2982 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
710807059 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
710807059 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
710807059 |
3542491 |
0 |
0 |
T3 |
1783 |
200 |
0 |
0 |
T4 |
1281 |
0 |
0 |
0 |
T5 |
1197 |
3 |
0 |
0 |
T6 |
135093 |
2412 |
0 |
0 |
T7 |
127807 |
832 |
0 |
0 |
T8 |
24309 |
832 |
0 |
0 |
T9 |
62757 |
832 |
0 |
0 |
T10 |
549720 |
0 |
0 |
0 |
T11 |
21816 |
832 |
0 |
0 |
T12 |
19375 |
1088 |
0 |
0 |
T13 |
93908 |
832 |
0 |
0 |
T14 |
16979 |
832 |
0 |
0 |
T19 |
54696 |
264 |
0 |
0 |
T27 |
0 |
174 |
0 |
0 |
T28 |
0 |
2612 |
0 |
0 |
T29 |
95700 |
0 |
0 |
0 |
T30 |
277088 |
3521 |
0 |
0 |
T32 |
305619 |
5317 |
0 |
0 |
T33 |
1343 |
0 |
0 |
0 |
T34 |
0 |
70 |
0 |
0 |
T45 |
15496 |
0 |
0 |
0 |
T49 |
0 |
1459 |
0 |
0 |
T51 |
108824 |
0 |
0 |
0 |
T54 |
0 |
4067 |
0 |
0 |
T55 |
2080 |
0 |
0 |
0 |
T56 |
61949 |
0 |
0 |
0 |
T63 |
0 |
3914 |
0 |
0 |
T64 |
0 |
241 |
0 |
0 |
T65 |
0 |
2982 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
710807059 |
3542491 |
0 |
0 |
T3 |
1783 |
200 |
0 |
0 |
T4 |
1281 |
0 |
0 |
0 |
T5 |
1197 |
3 |
0 |
0 |
T6 |
135093 |
2412 |
0 |
0 |
T7 |
127807 |
832 |
0 |
0 |
T8 |
24309 |
832 |
0 |
0 |
T9 |
62757 |
832 |
0 |
0 |
T10 |
549720 |
0 |
0 |
0 |
T11 |
21816 |
832 |
0 |
0 |
T12 |
19375 |
1088 |
0 |
0 |
T13 |
93908 |
832 |
0 |
0 |
T14 |
16979 |
832 |
0 |
0 |
T19 |
54696 |
264 |
0 |
0 |
T27 |
0 |
174 |
0 |
0 |
T28 |
0 |
2612 |
0 |
0 |
T29 |
95700 |
0 |
0 |
0 |
T30 |
277088 |
3521 |
0 |
0 |
T32 |
305619 |
5317 |
0 |
0 |
T33 |
1343 |
0 |
0 |
0 |
T34 |
0 |
70 |
0 |
0 |
T45 |
15496 |
0 |
0 |
0 |
T49 |
0 |
1459 |
0 |
0 |
T51 |
108824 |
0 |
0 |
0 |
T54 |
0 |
4067 |
0 |
0 |
T55 |
2080 |
0 |
0 |
0 |
T56 |
61949 |
0 |
0 |
0 |
T63 |
0 |
3914 |
0 |
0 |
T64 |
0 |
241 |
0 |
0 |
T65 |
0 |
2982 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
710807059 |
3542491 |
0 |
0 |
T3 |
1783 |
200 |
0 |
0 |
T4 |
1281 |
0 |
0 |
0 |
T5 |
1197 |
3 |
0 |
0 |
T6 |
135093 |
2412 |
0 |
0 |
T7 |
127807 |
832 |
0 |
0 |
T8 |
24309 |
832 |
0 |
0 |
T9 |
62757 |
832 |
0 |
0 |
T10 |
549720 |
0 |
0 |
0 |
T11 |
21816 |
832 |
0 |
0 |
T12 |
19375 |
1088 |
0 |
0 |
T13 |
93908 |
832 |
0 |
0 |
T14 |
16979 |
832 |
0 |
0 |
T19 |
54696 |
264 |
0 |
0 |
T27 |
0 |
174 |
0 |
0 |
T28 |
0 |
2612 |
0 |
0 |
T29 |
95700 |
0 |
0 |
0 |
T30 |
277088 |
3521 |
0 |
0 |
T32 |
305619 |
5317 |
0 |
0 |
T33 |
1343 |
0 |
0 |
0 |
T34 |
0 |
70 |
0 |
0 |
T45 |
15496 |
0 |
0 |
0 |
T49 |
0 |
1459 |
0 |
0 |
T51 |
108824 |
0 |
0 |
0 |
T54 |
0 |
4067 |
0 |
0 |
T55 |
2080 |
0 |
0 |
0 |
T56 |
61949 |
0 |
0 |
0 |
T63 |
0 |
3914 |
0 |
0 |
T64 |
0 |
241 |
0 |
0 |
T65 |
0 |
2982 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
710807059 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
710807059 |
6 |
0 |
976 |
T66 |
209072 |
1 |
0 |
1 |
T67 |
0 |
1 |
0 |
0 |
T68 |
0 |
1 |
0 |
0 |
T69 |
0 |
1 |
0 |
0 |
T70 |
0 |
1 |
0 |
0 |
T71 |
0 |
1 |
0 |
0 |
T72 |
242606 |
0 |
0 |
1 |
T73 |
90063 |
0 |
0 |
1 |
T74 |
1030 |
0 |
0 |
1 |
T75 |
5585 |
0 |
0 |
1 |
T76 |
114588 |
0 |
0 |
1 |
T77 |
102744 |
0 |
0 |
1 |
T78 |
3978 |
0 |
0 |
1 |
T79 |
844 |
0 |
0 |
1 |
T80 |
1426 |
0 |
0 |
1 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
710807059 |
562948224 |
0 |
0 |
T1 |
1548 |
1484 |
0 |
0 |
T2 |
999 |
912 |
0 |
0 |
T3 |
1783 |
1683 |
0 |
0 |
T4 |
1353 |
1296 |
0 |
0 |
T5 |
1197 |
1127 |
0 |
0 |
T6 |
135093 |
132926 |
0 |
0 |
T7 |
158865 |
127736 |
0 |
0 |
T8 |
34789 |
24214 |
0 |
0 |
T9 |
71645 |
62672 |
0 |
0 |
T10 |
659391 |
545294 |
0 |
0 |
T11 |
29280 |
14640 |
0 |
0 |
T12 |
10784 |
5392 |
0 |
0 |
T13 |
187816 |
93738 |
0 |
0 |
T14 |
16979 |
16979 |
0 |
0 |
T17 |
0 |
2128 |
0 |
0 |
T26 |
1159 |
1008 |
0 |
0 |
T27 |
3656 |
3656 |
0 |
0 |
T28 |
0 |
220328 |
0 |
0 |
T29 |
0 |
91744 |
0 |
0 |
T30 |
0 |
145112 |
0 |
0 |
T32 |
0 |
145392 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
710807059 |
3542491 |
0 |
0 |
T3 |
1783 |
200 |
0 |
0 |
T4 |
1281 |
0 |
0 |
0 |
T5 |
1197 |
3 |
0 |
0 |
T6 |
135093 |
2412 |
0 |
0 |
T7 |
127807 |
832 |
0 |
0 |
T8 |
24309 |
832 |
0 |
0 |
T9 |
62757 |
832 |
0 |
0 |
T10 |
549720 |
0 |
0 |
0 |
T11 |
21816 |
832 |
0 |
0 |
T12 |
19375 |
1088 |
0 |
0 |
T13 |
93908 |
832 |
0 |
0 |
T14 |
16979 |
832 |
0 |
0 |
T19 |
54696 |
264 |
0 |
0 |
T27 |
0 |
174 |
0 |
0 |
T28 |
0 |
2612 |
0 |
0 |
T29 |
95700 |
0 |
0 |
0 |
T30 |
277088 |
3521 |
0 |
0 |
T32 |
305619 |
5317 |
0 |
0 |
T33 |
1343 |
0 |
0 |
0 |
T34 |
0 |
70 |
0 |
0 |
T45 |
15496 |
0 |
0 |
0 |
T49 |
0 |
1459 |
0 |
0 |
T51 |
108824 |
0 |
0 |
0 |
T54 |
0 |
4067 |
0 |
0 |
T55 |
2080 |
0 |
0 |
0 |
T56 |
61949 |
0 |
0 |
0 |
T63 |
0 |
3914 |
0 |
0 |
T64 |
0 |
241 |
0 |
0 |
T65 |
0 |
2982 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_spi_tpm.u_arbiter.gen_arb_ppc.u_reqarb
| Line No. | Total | Covered | Percent |
TOTAL | | 22 | 22 | 100.00 |
CONT_ASSIGN | 55 | 0 | 0 | |
CONT_ASSIGN | 75 | 1 | 1 | 100.00 |
CONT_ASSIGN | 76 | 1 | 1 | 100.00 |
ALWAYS | 82 | 3 | 3 | 100.00 |
CONT_ASSIGN | 89 | 1 | 1 | 100.00 |
CONT_ASSIGN | 90 | 1 | 1 | 100.00 |
CONT_ASSIGN | 92 | 1 | 1 | 100.00 |
CONT_ASSIGN | 94 | 1 | 1 | 100.00 |
ALWAYS | 96 | 5 | 5 | 100.00 |
ALWAYS | 109 | 4 | 4 | 100.00 |
ALWAYS | 124 | 4 | 4 | 100.00 |
54 logic unused_req_chk;
55 unreachable assign unused_req_chk = req_chk_i;
56
57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0)
58
59 // this case is basically just a bypass
60 if (N == 1) begin : gen_degenerate_case
61
62 assign valid_o = req_i[0];
63 assign data_o = data_i[0];
64 assign gnt_o[0] = valid_o & ready_i;
65 assign idx_o = '0;
66
67 end else begin : gen_normal_case
68
69 logic [N-1:0] masked_req;
70 logic [N-1:0] ppc_out;
71 logic [N-1:0] arb_req;
72 logic [N-1:0] mask, mask_next;
73 logic [N-1:0] winner;
74
75 1/1 assign masked_req = mask & req_i;
Tests: T1 T2 T3
76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i;
Tests: T1 T2 T3
77
78 // PPC
79 // Even below code looks O(n) but DC optimizes it to O(log(N))
80 // Using Parallel Prefix Computation
81 always_comb begin
82 1/1 ppc_out[0] = arb_req[0];
Tests: T1 T2 T3
83 1/1 for (int i = 1 ; i < N ; i++) begin
Tests: T1 T2 T3
84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i];
Tests: T1 T2 T3
85 end
86 end
87
88 // Grant Generation: Leading-One detector
89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
90 1/1 assign gnt_o = (ready_i) ? winner : '0;
Tests: T1 T2 T3
91
92 1/1 assign valid_o = |req_i;
Tests: T1 T2 T3
93 // Mask Generation
94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
95 always_ff @(posedge clk_i or negedge rst_ni) begin
96 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
97 1/1 mask <= '0;
Tests: T1 T2 T3
98 1/1 end else if (valid_o && ready_i) begin
Tests: T4 T5 T6
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T5 T6 T27
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T4 T5 T6
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 unreachable mask <= ppc_out;
104 end
MISSING_ELSE
105 end
106
107 if (EnDataPort == 1) begin: gen_datapath
108 always_comb begin
109 1/1 data_o = '0;
Tests: T1 T2 T3
110 1/1 for (int i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
111 1/1 if (winner[i]) begin
Tests: T1 T2 T3
112 1/1 data_o = data_i[i];
Tests: T5 T6 T27
113 end
MISSING_ELSE
114 end
115 end
116 end else begin: gen_nodatapath
117 assign data_o = '1;
118 // The following signal is used to avoid possible lint errors.
119 logic [DW-1:0] unused_data [N];
120 assign unused_data = data_i;
121 end
122
123 always_comb begin
124 1/1 idx_o = '0;
Tests: T1 T2 T3
125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
126 1/1 if (winner[i]) begin
Tests: T1 T2 T3
127 1/1 idx_o = i[IdxW-1:0];
Tests: T5 T6 T27
128 end
MISSING_ELSE
Cond Coverage for Instance : tb.dut.u_spi_tpm.u_arbiter.gen_arb_ppc.u_reqarb
| Total | Covered | Percent |
Conditions | 8 | 7 | 87.50 |
Logical | 8 | 7 | 87.50 |
Non-Logical | 0 | 0 | |
Event | 0 | 0 | |
LINE 76
EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
---------------1---------------
-1- | Status | Tests |
0 | Covered | T1,T2,T3 |
1 | Not Covered | |
LINE 84
EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
----------------1--------------- -------------2------------
-1- | -2- | Status | Tests |
0 | 0 | Covered | T1,T2,T3 |
0 | 1 | Covered | T6,T27,T28 |
1 | 0 | Covered | T5,T6,T27 |
LINE 90
EXPRESSION (ready_i ? gen_normal_case.winner : '0)
---1---
-1- | Status | Tests |
0 | Unreachable | |
1 | Covered | T1,T2,T3 |
LINE 98
EXPRESSION (valid_o && ready_i)
---1--- ---2---
-1- | -2- | Status | Tests |
0 | 1 | Covered | T4,T5,T6 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T5,T6,T27 |
LINE 101
EXPRESSION (valid_o && ((!ready_i)))
---1--- ------2-----
-1- | -2- | Status | Tests | Exclude Annotation |
0 | 1 | Unreachable | |
1 | 0 | Excluded | |
VC_COV_UNR |
1 | 1 | Unreachable | |
Branch Coverage for Instance : tb.dut.u_spi_tpm.u_arbiter.gen_arb_ppc.u_reqarb
| Line No. | Total | Covered | Percent |
Branches |
|
10 |
9 |
90.00 |
TERNARY |
76 |
2 |
1 |
50.00 |
TERNARY |
90 |
1 |
1 |
100.00 |
IF |
96 |
3 |
3 |
100.00 |
IF |
126 |
2 |
2 |
100.00 |
IF |
111 |
2 |
2 |
100.00 |
76 assign arb_req = (|masked_req) ? masked_req : req_i;
-1-
==>
==>
Branches:
-1- | Status | Tests |
1 |
Not Covered |
|
0 |
Covered |
T1,T2,T3 |
90 assign gnt_o = (ready_i) ? winner : '0;
-1-
==>
==> (Unreachable)
Branches:
-1- | Status | Tests |
1 |
Covered |
T1,T2,T3 |
0 |
Unreachable |
|
96 if (!rst_ni) begin
-1-
97 mask <= '0;
==>
98 end else if (valid_o && ready_i) begin
-2-
99 // Latch only when requests accepted
100 mask <= mask_next;
==>
101 end else if (valid_o && !ready_i) begin
-3-
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 mask <= ppc_out;
==> (Unreachable)
104 end
MISSING_ELSE
==>
Branches:
-1- | -2- | -3- | Status | Tests |
1 |
- |
- |
Covered |
T1,T2,T3 |
0 |
1 |
- |
Covered |
T5,T6,T27 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T4,T5,T6 |
126 if (winner[i]) begin
-1-
127 idx_o = i[IdxW-1:0];
==>
128 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T5,T6,T27 |
0 |
Covered |
T1,T2,T3 |
111 if (winner[i]) begin
-1-
112 data_o = data_i[i];
==>
113 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T5,T6,T27 |
0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_spi_tpm.u_arbiter.gen_arb_ppc.u_reqarb
Assertion Details
CheckHotOne_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
25344785 |
0 |
0 |
T4 |
72 |
72 |
0 |
0 |
T5 |
128 |
128 |
0 |
0 |
T6 |
65683 |
63616 |
0 |
0 |
T7 |
31058 |
0 |
0 |
0 |
T8 |
10480 |
0 |
0 |
0 |
T9 |
8888 |
0 |
0 |
0 |
T10 |
109671 |
105320 |
0 |
0 |
T11 |
14640 |
0 |
0 |
0 |
T12 |
5392 |
0 |
0 |
0 |
T13 |
93908 |
0 |
0 |
0 |
T26 |
0 |
1008 |
0 |
0 |
T27 |
0 |
3656 |
0 |
0 |
T28 |
0 |
220328 |
0 |
0 |
T29 |
0 |
91744 |
0 |
0 |
T30 |
0 |
145112 |
0 |
0 |
T32 |
0 |
145392 |
0 |
0 |
CheckNGreaterZero_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
976 |
976 |
0 |
0 |
T1 |
1 |
1 |
0 |
0 |
T2 |
1 |
1 |
0 |
0 |
T3 |
1 |
1 |
0 |
0 |
T4 |
1 |
1 |
0 |
0 |
T5 |
1 |
1 |
0 |
0 |
T6 |
1 |
1 |
0 |
0 |
T7 |
1 |
1 |
0 |
0 |
T8 |
1 |
1 |
0 |
0 |
T9 |
1 |
1 |
0 |
0 |
T10 |
1 |
1 |
0 |
0 |
GntImpliesReady_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
549283 |
0 |
0 |
T5 |
128 |
2 |
0 |
0 |
T6 |
65683 |
1660 |
0 |
0 |
T7 |
31058 |
0 |
0 |
0 |
T8 |
10480 |
0 |
0 |
0 |
T9 |
8888 |
0 |
0 |
0 |
T10 |
109671 |
0 |
0 |
0 |
T11 |
14640 |
0 |
0 |
0 |
T12 |
5392 |
0 |
0 |
0 |
T13 |
93908 |
0 |
0 |
0 |
T14 |
16979 |
0 |
0 |
0 |
T27 |
0 |
174 |
0 |
0 |
T28 |
0 |
2612 |
0 |
0 |
T30 |
0 |
3521 |
0 |
0 |
T32 |
0 |
3672 |
0 |
0 |
T34 |
0 |
70 |
0 |
0 |
T63 |
0 |
3914 |
0 |
0 |
T64 |
0 |
241 |
0 |
0 |
T65 |
0 |
2982 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
549283 |
0 |
0 |
T5 |
128 |
2 |
0 |
0 |
T6 |
65683 |
1660 |
0 |
0 |
T7 |
31058 |
0 |
0 |
0 |
T8 |
10480 |
0 |
0 |
0 |
T9 |
8888 |
0 |
0 |
0 |
T10 |
109671 |
0 |
0 |
0 |
T11 |
14640 |
0 |
0 |
0 |
T12 |
5392 |
0 |
0 |
0 |
T13 |
93908 |
0 |
0 |
0 |
T14 |
16979 |
0 |
0 |
0 |
T27 |
0 |
174 |
0 |
0 |
T28 |
0 |
2612 |
0 |
0 |
T30 |
0 |
3521 |
0 |
0 |
T32 |
0 |
3672 |
0 |
0 |
T34 |
0 |
70 |
0 |
0 |
T63 |
0 |
3914 |
0 |
0 |
T64 |
0 |
241 |
0 |
0 |
T65 |
0 |
2982 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
25344785 |
0 |
0 |
T4 |
72 |
72 |
0 |
0 |
T5 |
128 |
128 |
0 |
0 |
T6 |
65683 |
63616 |
0 |
0 |
T7 |
31058 |
0 |
0 |
0 |
T8 |
10480 |
0 |
0 |
0 |
T9 |
8888 |
0 |
0 |
0 |
T10 |
109671 |
105320 |
0 |
0 |
T11 |
14640 |
0 |
0 |
0 |
T12 |
5392 |
0 |
0 |
0 |
T13 |
93908 |
0 |
0 |
0 |
T26 |
0 |
1008 |
0 |
0 |
T27 |
0 |
3656 |
0 |
0 |
T28 |
0 |
220328 |
0 |
0 |
T29 |
0 |
91744 |
0 |
0 |
T30 |
0 |
145112 |
0 |
0 |
T32 |
0 |
145392 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
25344785 |
0 |
0 |
T4 |
72 |
72 |
0 |
0 |
T5 |
128 |
128 |
0 |
0 |
T6 |
65683 |
63616 |
0 |
0 |
T7 |
31058 |
0 |
0 |
0 |
T8 |
10480 |
0 |
0 |
0 |
T9 |
8888 |
0 |
0 |
0 |
T10 |
109671 |
105320 |
0 |
0 |
T11 |
14640 |
0 |
0 |
0 |
T12 |
5392 |
0 |
0 |
0 |
T13 |
93908 |
0 |
0 |
0 |
T26 |
0 |
1008 |
0 |
0 |
T27 |
0 |
3656 |
0 |
0 |
T28 |
0 |
220328 |
0 |
0 |
T29 |
0 |
91744 |
0 |
0 |
T30 |
0 |
145112 |
0 |
0 |
T32 |
0 |
145392 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
549283 |
0 |
0 |
T5 |
128 |
2 |
0 |
0 |
T6 |
65683 |
1660 |
0 |
0 |
T7 |
31058 |
0 |
0 |
0 |
T8 |
10480 |
0 |
0 |
0 |
T9 |
8888 |
0 |
0 |
0 |
T10 |
109671 |
0 |
0 |
0 |
T11 |
14640 |
0 |
0 |
0 |
T12 |
5392 |
0 |
0 |
0 |
T13 |
93908 |
0 |
0 |
0 |
T14 |
16979 |
0 |
0 |
0 |
T27 |
0 |
174 |
0 |
0 |
T28 |
0 |
2612 |
0 |
0 |
T30 |
0 |
3521 |
0 |
0 |
T32 |
0 |
3672 |
0 |
0 |
T34 |
0 |
70 |
0 |
0 |
T63 |
0 |
3914 |
0 |
0 |
T64 |
0 |
241 |
0 |
0 |
T65 |
0 |
2982 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
549283 |
0 |
0 |
T5 |
128 |
2 |
0 |
0 |
T6 |
65683 |
1660 |
0 |
0 |
T7 |
31058 |
0 |
0 |
0 |
T8 |
10480 |
0 |
0 |
0 |
T9 |
8888 |
0 |
0 |
0 |
T10 |
109671 |
0 |
0 |
0 |
T11 |
14640 |
0 |
0 |
0 |
T12 |
5392 |
0 |
0 |
0 |
T13 |
93908 |
0 |
0 |
0 |
T14 |
16979 |
0 |
0 |
0 |
T27 |
0 |
174 |
0 |
0 |
T28 |
0 |
2612 |
0 |
0 |
T30 |
0 |
3521 |
0 |
0 |
T32 |
0 |
3672 |
0 |
0 |
T34 |
0 |
70 |
0 |
0 |
T63 |
0 |
3914 |
0 |
0 |
T64 |
0 |
241 |
0 |
0 |
T65 |
0 |
2982 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
549283 |
0 |
0 |
T5 |
128 |
2 |
0 |
0 |
T6 |
65683 |
1660 |
0 |
0 |
T7 |
31058 |
0 |
0 |
0 |
T8 |
10480 |
0 |
0 |
0 |
T9 |
8888 |
0 |
0 |
0 |
T10 |
109671 |
0 |
0 |
0 |
T11 |
14640 |
0 |
0 |
0 |
T12 |
5392 |
0 |
0 |
0 |
T13 |
93908 |
0 |
0 |
0 |
T14 |
16979 |
0 |
0 |
0 |
T27 |
0 |
174 |
0 |
0 |
T28 |
0 |
2612 |
0 |
0 |
T30 |
0 |
3521 |
0 |
0 |
T32 |
0 |
3672 |
0 |
0 |
T34 |
0 |
70 |
0 |
0 |
T63 |
0 |
3914 |
0 |
0 |
T64 |
0 |
241 |
0 |
0 |
T65 |
0 |
2982 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
549283 |
0 |
0 |
T5 |
128 |
2 |
0 |
0 |
T6 |
65683 |
1660 |
0 |
0 |
T7 |
31058 |
0 |
0 |
0 |
T8 |
10480 |
0 |
0 |
0 |
T9 |
8888 |
0 |
0 |
0 |
T10 |
109671 |
0 |
0 |
0 |
T11 |
14640 |
0 |
0 |
0 |
T12 |
5392 |
0 |
0 |
0 |
T13 |
93908 |
0 |
0 |
0 |
T14 |
16979 |
0 |
0 |
0 |
T27 |
0 |
174 |
0 |
0 |
T28 |
0 |
2612 |
0 |
0 |
T30 |
0 |
3521 |
0 |
0 |
T32 |
0 |
3672 |
0 |
0 |
T34 |
0 |
70 |
0 |
0 |
T63 |
0 |
3914 |
0 |
0 |
T64 |
0 |
241 |
0 |
0 |
T65 |
0 |
2982 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
0 |
0 |
0 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
25344785 |
0 |
0 |
T4 |
72 |
72 |
0 |
0 |
T5 |
128 |
128 |
0 |
0 |
T6 |
65683 |
63616 |
0 |
0 |
T7 |
31058 |
0 |
0 |
0 |
T8 |
10480 |
0 |
0 |
0 |
T9 |
8888 |
0 |
0 |
0 |
T10 |
109671 |
105320 |
0 |
0 |
T11 |
14640 |
0 |
0 |
0 |
T12 |
5392 |
0 |
0 |
0 |
T13 |
93908 |
0 |
0 |
0 |
T26 |
0 |
1008 |
0 |
0 |
T27 |
0 |
3656 |
0 |
0 |
T28 |
0 |
220328 |
0 |
0 |
T29 |
0 |
91744 |
0 |
0 |
T30 |
0 |
145112 |
0 |
0 |
T32 |
0 |
145392 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
549283 |
0 |
0 |
T5 |
128 |
2 |
0 |
0 |
T6 |
65683 |
1660 |
0 |
0 |
T7 |
31058 |
0 |
0 |
0 |
T8 |
10480 |
0 |
0 |
0 |
T9 |
8888 |
0 |
0 |
0 |
T10 |
109671 |
0 |
0 |
0 |
T11 |
14640 |
0 |
0 |
0 |
T12 |
5392 |
0 |
0 |
0 |
T13 |
93908 |
0 |
0 |
0 |
T14 |
16979 |
0 |
0 |
0 |
T27 |
0 |
174 |
0 |
0 |
T28 |
0 |
2612 |
0 |
0 |
T30 |
0 |
3521 |
0 |
0 |
T32 |
0 |
3672 |
0 |
0 |
T34 |
0 |
70 |
0 |
0 |
T63 |
0 |
3914 |
0 |
0 |
T64 |
0 |
241 |
0 |
0 |
T65 |
0 |
2982 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_upload.u_arbiter.gen_arb_ppc.u_reqarb
| Line No. | Total | Covered | Percent |
TOTAL | | 22 | 22 | 100.00 |
CONT_ASSIGN | 55 | 0 | 0 | |
CONT_ASSIGN | 75 | 1 | 1 | 100.00 |
CONT_ASSIGN | 76 | 1 | 1 | 100.00 |
ALWAYS | 82 | 3 | 3 | 100.00 |
CONT_ASSIGN | 89 | 1 | 1 | 100.00 |
CONT_ASSIGN | 90 | 1 | 1 | 100.00 |
CONT_ASSIGN | 92 | 1 | 1 | 100.00 |
CONT_ASSIGN | 94 | 1 | 1 | 100.00 |
ALWAYS | 96 | 5 | 5 | 100.00 |
ALWAYS | 109 | 4 | 4 | 100.00 |
ALWAYS | 124 | 4 | 4 | 100.00 |
54 logic unused_req_chk;
55 unreachable assign unused_req_chk = req_chk_i;
56
57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0)
58
59 // this case is basically just a bypass
60 if (N == 1) begin : gen_degenerate_case
61
62 assign valid_o = req_i[0];
63 assign data_o = data_i[0];
64 assign gnt_o[0] = valid_o & ready_i;
65 assign idx_o = '0;
66
67 end else begin : gen_normal_case
68
69 logic [N-1:0] masked_req;
70 logic [N-1:0] ppc_out;
71 logic [N-1:0] arb_req;
72 logic [N-1:0] mask, mask_next;
73 logic [N-1:0] winner;
74
75 1/1 assign masked_req = mask & req_i;
Tests: T1 T2 T3
76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i;
Tests: T1 T2 T3
77
78 // PPC
79 // Even below code looks O(n) but DC optimizes it to O(log(N))
80 // Using Parallel Prefix Computation
81 always_comb begin
82 1/1 ppc_out[0] = arb_req[0];
Tests: T1 T2 T3
83 1/1 for (int i = 1 ; i < N ; i++) begin
Tests: T1 T2 T3
84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i];
Tests: T1 T2 T3
85 end
86 end
87
88 // Grant Generation: Leading-One detector
89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
90 1/1 assign gnt_o = (ready_i) ? winner : '0;
Tests: T1 T2 T3
91
92 1/1 assign valid_o = |req_i;
Tests: T1 T2 T3
93 // Mask Generation
94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
95 always_ff @(posedge clk_i or negedge rst_ni) begin
96 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
97 1/1 mask <= '0;
Tests: T1 T2 T3
98 1/1 end else if (valid_o && ready_i) begin
Tests: T7 T8 T9
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T19 T32 T54
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T7 T8 T9
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 unreachable mask <= ppc_out;
104 end
MISSING_ELSE
105 end
106
107 if (EnDataPort == 1) begin: gen_datapath
108 always_comb begin
109 1/1 data_o = '0;
Tests: T1 T2 T3
110 1/1 for (int i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
111 1/1 if (winner[i]) begin
Tests: T1 T2 T3
112 1/1 data_o = data_i[i];
Tests: T19 T32 T54
113 end
MISSING_ELSE
114 end
115 end
116 end else begin: gen_nodatapath
117 assign data_o = '1;
118 // The following signal is used to avoid possible lint errors.
119 logic [DW-1:0] unused_data [N];
120 assign unused_data = data_i;
121 end
122
123 always_comb begin
124 1/1 idx_o = '0;
Tests: T1 T2 T3
125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
126 1/1 if (winner[i]) begin
Tests: T1 T2 T3
127 1/1 idx_o = i[IdxW-1:0];
Tests: T19 T32 T54
128 end
MISSING_ELSE
Cond Coverage for Instance : tb.dut.u_upload.u_arbiter.gen_arb_ppc.u_reqarb
| Total | Covered | Percent |
Conditions | 8 | 8 | 100.00 |
Logical | 8 | 8 | 100.00 |
Non-Logical | 0 | 0 | |
Event | 0 | 0 | |
LINE 76
EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
---------------1---------------
-1- | Status | Tests |
0 | Covered | T1,T2,T3 |
1 | Covered | T19,T32,T54 |
LINE 84
EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
----------------1--------------- -------------2------------
-1- | -2- | Status | Tests |
0 | 0 | Covered | T1,T2,T3 |
0 | 1 | Covered | T19,T32,T54 |
1 | 0 | Covered | T19,T32,T54 |
LINE 90
EXPRESSION (ready_i ? gen_normal_case.winner : '0)
---1---
-1- | Status | Tests |
0 | Unreachable | |
1 | Covered | T1,T2,T3 |
LINE 98
EXPRESSION (valid_o && ready_i)
---1--- ---2---
-1- | -2- | Status | Tests |
0 | 1 | Covered | T7,T8,T9 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T19,T32,T54 |
LINE 101
EXPRESSION (valid_o && ((!ready_i)))
---1--- ------2-----
-1- | -2- | Status | Tests | Exclude Annotation |
0 | 1 | Unreachable | |
1 | 0 | Excluded | |
VC_COV_UNR |
1 | 1 | Unreachable | |
Branch Coverage for Instance : tb.dut.u_upload.u_arbiter.gen_arb_ppc.u_reqarb
| Line No. | Total | Covered | Percent |
Branches |
|
10 |
10 |
100.00 |
TERNARY |
76 |
2 |
2 |
100.00 |
TERNARY |
90 |
1 |
1 |
100.00 |
IF |
96 |
3 |
3 |
100.00 |
IF |
126 |
2 |
2 |
100.00 |
IF |
111 |
2 |
2 |
100.00 |
76 assign arb_req = (|masked_req) ? masked_req : req_i;
-1-
==>
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T19,T32,T54 |
0 |
Covered |
T1,T2,T3 |
90 assign gnt_o = (ready_i) ? winner : '0;
-1-
==>
==> (Unreachable)
Branches:
-1- | Status | Tests |
1 |
Covered |
T1,T2,T3 |
0 |
Unreachable |
|
96 if (!rst_ni) begin
-1-
97 mask <= '0;
==>
98 end else if (valid_o && ready_i) begin
-2-
99 // Latch only when requests accepted
100 mask <= mask_next;
==>
101 end else if (valid_o && !ready_i) begin
-3-
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 mask <= ppc_out;
==> (Unreachable)
104 end
MISSING_ELSE
==>
Branches:
-1- | -2- | -3- | Status | Tests |
1 |
- |
- |
Covered |
T1,T2,T3 |
0 |
1 |
- |
Covered |
T19,T32,T54 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T7,T8,T9 |
126 if (winner[i]) begin
-1-
127 idx_o = i[IdxW-1:0];
==>
128 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T19,T32,T54 |
0 |
Covered |
T1,T2,T3 |
111 if (winner[i]) begin
-1-
112 data_o = data_i[i];
==>
113 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T19,T32,T54 |
0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_upload.u_arbiter.gen_arb_ppc.u_reqarb
Assertion Details
CheckHotOne_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
119952536 |
0 |
0 |
T7 |
31058 |
31058 |
0 |
0 |
T8 |
10480 |
10480 |
0 |
0 |
T9 |
8888 |
8888 |
0 |
0 |
T10 |
109671 |
0 |
0 |
0 |
T11 |
14640 |
14640 |
0 |
0 |
T12 |
5392 |
5392 |
0 |
0 |
T13 |
93908 |
93738 |
0 |
0 |
T14 |
16979 |
16979 |
0 |
0 |
T17 |
0 |
2128 |
0 |
0 |
T18 |
0 |
96 |
0 |
0 |
T19 |
0 |
54621 |
0 |
0 |
T26 |
1159 |
0 |
0 |
0 |
T27 |
3656 |
0 |
0 |
0 |
CheckNGreaterZero_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
976 |
976 |
0 |
0 |
T1 |
1 |
1 |
0 |
0 |
T2 |
1 |
1 |
0 |
0 |
T3 |
1 |
1 |
0 |
0 |
T4 |
1 |
1 |
0 |
0 |
T5 |
1 |
1 |
0 |
0 |
T6 |
1 |
1 |
0 |
0 |
T7 |
1 |
1 |
0 |
0 |
T8 |
1 |
1 |
0 |
0 |
T9 |
1 |
1 |
0 |
0 |
T10 |
1 |
1 |
0 |
0 |
GntImpliesReady_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
806363 |
0 |
0 |
T19 |
54696 |
264 |
0 |
0 |
T23 |
0 |
2234 |
0 |
0 |
T29 |
95700 |
0 |
0 |
0 |
T30 |
277088 |
0 |
0 |
0 |
T32 |
305619 |
1645 |
0 |
0 |
T33 |
1343 |
0 |
0 |
0 |
T34 |
3433 |
0 |
0 |
0 |
T36 |
0 |
6663 |
0 |
0 |
T45 |
15496 |
0 |
0 |
0 |
T46 |
0 |
2245 |
0 |
0 |
T47 |
0 |
5596 |
0 |
0 |
T49 |
0 |
1459 |
0 |
0 |
T50 |
0 |
2230 |
0 |
0 |
T51 |
108824 |
0 |
0 |
0 |
T54 |
0 |
4067 |
0 |
0 |
T55 |
2080 |
0 |
0 |
0 |
T56 |
61949 |
0 |
0 |
0 |
T81 |
0 |
1868 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
806363 |
0 |
0 |
T19 |
54696 |
264 |
0 |
0 |
T23 |
0 |
2234 |
0 |
0 |
T29 |
95700 |
0 |
0 |
0 |
T30 |
277088 |
0 |
0 |
0 |
T32 |
305619 |
1645 |
0 |
0 |
T33 |
1343 |
0 |
0 |
0 |
T34 |
3433 |
0 |
0 |
0 |
T36 |
0 |
6663 |
0 |
0 |
T45 |
15496 |
0 |
0 |
0 |
T46 |
0 |
2245 |
0 |
0 |
T47 |
0 |
5596 |
0 |
0 |
T49 |
0 |
1459 |
0 |
0 |
T50 |
0 |
2230 |
0 |
0 |
T51 |
108824 |
0 |
0 |
0 |
T54 |
0 |
4067 |
0 |
0 |
T55 |
2080 |
0 |
0 |
0 |
T56 |
61949 |
0 |
0 |
0 |
T81 |
0 |
1868 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
119952536 |
0 |
0 |
T7 |
31058 |
31058 |
0 |
0 |
T8 |
10480 |
10480 |
0 |
0 |
T9 |
8888 |
8888 |
0 |
0 |
T10 |
109671 |
0 |
0 |
0 |
T11 |
14640 |
14640 |
0 |
0 |
T12 |
5392 |
5392 |
0 |
0 |
T13 |
93908 |
93738 |
0 |
0 |
T14 |
16979 |
16979 |
0 |
0 |
T17 |
0 |
2128 |
0 |
0 |
T18 |
0 |
96 |
0 |
0 |
T19 |
0 |
54621 |
0 |
0 |
T26 |
1159 |
0 |
0 |
0 |
T27 |
3656 |
0 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
119952536 |
0 |
0 |
T7 |
31058 |
31058 |
0 |
0 |
T8 |
10480 |
10480 |
0 |
0 |
T9 |
8888 |
8888 |
0 |
0 |
T10 |
109671 |
0 |
0 |
0 |
T11 |
14640 |
14640 |
0 |
0 |
T12 |
5392 |
5392 |
0 |
0 |
T13 |
93908 |
93738 |
0 |
0 |
T14 |
16979 |
16979 |
0 |
0 |
T17 |
0 |
2128 |
0 |
0 |
T18 |
0 |
96 |
0 |
0 |
T19 |
0 |
54621 |
0 |
0 |
T26 |
1159 |
0 |
0 |
0 |
T27 |
3656 |
0 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
806363 |
0 |
0 |
T19 |
54696 |
264 |
0 |
0 |
T23 |
0 |
2234 |
0 |
0 |
T29 |
95700 |
0 |
0 |
0 |
T30 |
277088 |
0 |
0 |
0 |
T32 |
305619 |
1645 |
0 |
0 |
T33 |
1343 |
0 |
0 |
0 |
T34 |
3433 |
0 |
0 |
0 |
T36 |
0 |
6663 |
0 |
0 |
T45 |
15496 |
0 |
0 |
0 |
T46 |
0 |
2245 |
0 |
0 |
T47 |
0 |
5596 |
0 |
0 |
T49 |
0 |
1459 |
0 |
0 |
T50 |
0 |
2230 |
0 |
0 |
T51 |
108824 |
0 |
0 |
0 |
T54 |
0 |
4067 |
0 |
0 |
T55 |
2080 |
0 |
0 |
0 |
T56 |
61949 |
0 |
0 |
0 |
T81 |
0 |
1868 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
806363 |
0 |
0 |
T19 |
54696 |
264 |
0 |
0 |
T23 |
0 |
2234 |
0 |
0 |
T29 |
95700 |
0 |
0 |
0 |
T30 |
277088 |
0 |
0 |
0 |
T32 |
305619 |
1645 |
0 |
0 |
T33 |
1343 |
0 |
0 |
0 |
T34 |
3433 |
0 |
0 |
0 |
T36 |
0 |
6663 |
0 |
0 |
T45 |
15496 |
0 |
0 |
0 |
T46 |
0 |
2245 |
0 |
0 |
T47 |
0 |
5596 |
0 |
0 |
T49 |
0 |
1459 |
0 |
0 |
T50 |
0 |
2230 |
0 |
0 |
T51 |
108824 |
0 |
0 |
0 |
T54 |
0 |
4067 |
0 |
0 |
T55 |
2080 |
0 |
0 |
0 |
T56 |
61949 |
0 |
0 |
0 |
T81 |
0 |
1868 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
806363 |
0 |
0 |
T19 |
54696 |
264 |
0 |
0 |
T23 |
0 |
2234 |
0 |
0 |
T29 |
95700 |
0 |
0 |
0 |
T30 |
277088 |
0 |
0 |
0 |
T32 |
305619 |
1645 |
0 |
0 |
T33 |
1343 |
0 |
0 |
0 |
T34 |
3433 |
0 |
0 |
0 |
T36 |
0 |
6663 |
0 |
0 |
T45 |
15496 |
0 |
0 |
0 |
T46 |
0 |
2245 |
0 |
0 |
T47 |
0 |
5596 |
0 |
0 |
T49 |
0 |
1459 |
0 |
0 |
T50 |
0 |
2230 |
0 |
0 |
T51 |
108824 |
0 |
0 |
0 |
T54 |
0 |
4067 |
0 |
0 |
T55 |
2080 |
0 |
0 |
0 |
T56 |
61949 |
0 |
0 |
0 |
T81 |
0 |
1868 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
806363 |
0 |
0 |
T19 |
54696 |
264 |
0 |
0 |
T23 |
0 |
2234 |
0 |
0 |
T29 |
95700 |
0 |
0 |
0 |
T30 |
277088 |
0 |
0 |
0 |
T32 |
305619 |
1645 |
0 |
0 |
T33 |
1343 |
0 |
0 |
0 |
T34 |
3433 |
0 |
0 |
0 |
T36 |
0 |
6663 |
0 |
0 |
T45 |
15496 |
0 |
0 |
0 |
T46 |
0 |
2245 |
0 |
0 |
T47 |
0 |
5596 |
0 |
0 |
T49 |
0 |
1459 |
0 |
0 |
T50 |
0 |
2230 |
0 |
0 |
T51 |
108824 |
0 |
0 |
0 |
T54 |
0 |
4067 |
0 |
0 |
T55 |
2080 |
0 |
0 |
0 |
T56 |
61949 |
0 |
0 |
0 |
T81 |
0 |
1868 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
0 |
0 |
0 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
119952536 |
0 |
0 |
T7 |
31058 |
31058 |
0 |
0 |
T8 |
10480 |
10480 |
0 |
0 |
T9 |
8888 |
8888 |
0 |
0 |
T10 |
109671 |
0 |
0 |
0 |
T11 |
14640 |
14640 |
0 |
0 |
T12 |
5392 |
5392 |
0 |
0 |
T13 |
93908 |
93738 |
0 |
0 |
T14 |
16979 |
16979 |
0 |
0 |
T17 |
0 |
2128 |
0 |
0 |
T18 |
0 |
96 |
0 |
0 |
T19 |
0 |
54621 |
0 |
0 |
T26 |
1159 |
0 |
0 |
0 |
T27 |
3656 |
0 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
146533180 |
806363 |
0 |
0 |
T19 |
54696 |
264 |
0 |
0 |
T23 |
0 |
2234 |
0 |
0 |
T29 |
95700 |
0 |
0 |
0 |
T30 |
277088 |
0 |
0 |
0 |
T32 |
305619 |
1645 |
0 |
0 |
T33 |
1343 |
0 |
0 |
0 |
T34 |
3433 |
0 |
0 |
0 |
T36 |
0 |
6663 |
0 |
0 |
T45 |
15496 |
0 |
0 |
0 |
T46 |
0 |
2245 |
0 |
0 |
T47 |
0 |
5596 |
0 |
0 |
T49 |
0 |
1459 |
0 |
0 |
T50 |
0 |
2230 |
0 |
0 |
T51 |
108824 |
0 |
0 |
0 |
T54 |
0 |
4067 |
0 |
0 |
T55 |
2080 |
0 |
0 |
0 |
T56 |
61949 |
0 |
0 |
0 |
T81 |
0 |
1868 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_sys_sram_arbiter.gen_arb_ppc.u_reqarb
| Line No. | Total | Covered | Percent |
TOTAL | | 22 | 22 | 100.00 |
CONT_ASSIGN | 55 | 0 | 0 | |
CONT_ASSIGN | 75 | 1 | 1 | 100.00 |
CONT_ASSIGN | 76 | 1 | 1 | 100.00 |
ALWAYS | 82 | 3 | 3 | 100.00 |
CONT_ASSIGN | 89 | 1 | 1 | 100.00 |
CONT_ASSIGN | 90 | 1 | 1 | 100.00 |
CONT_ASSIGN | 92 | 1 | 1 | 100.00 |
CONT_ASSIGN | 94 | 1 | 1 | 100.00 |
ALWAYS | 96 | 5 | 5 | 100.00 |
ALWAYS | 109 | 4 | 4 | 100.00 |
ALWAYS | 124 | 4 | 4 | 100.00 |
54 logic unused_req_chk;
55 unreachable assign unused_req_chk = req_chk_i;
56
57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0)
58
59 // this case is basically just a bypass
60 if (N == 1) begin : gen_degenerate_case
61
62 assign valid_o = req_i[0];
63 assign data_o = data_i[0];
64 assign gnt_o[0] = valid_o & ready_i;
65 assign idx_o = '0;
66
67 end else begin : gen_normal_case
68
69 logic [N-1:0] masked_req;
70 logic [N-1:0] ppc_out;
71 logic [N-1:0] arb_req;
72 logic [N-1:0] mask, mask_next;
73 logic [N-1:0] winner;
74
75 1/1 assign masked_req = mask & req_i;
Tests: T1 T2 T3
76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i;
Tests: T1 T2 T3
77
78 // PPC
79 // Even below code looks O(n) but DC optimizes it to O(log(N))
80 // Using Parallel Prefix Computation
81 always_comb begin
82 1/1 ppc_out[0] = arb_req[0];
Tests: T1 T2 T3
83 1/1 for (int i = 1 ; i < N ; i++) begin
Tests: T1 T2 T3
84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i];
Tests: T1 T2 T3
85 end
86 end
87
88 // Grant Generation: Leading-One detector
89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
90 1/1 assign gnt_o = (ready_i) ? winner : '0;
Tests: T1 T2 T3
91
92 1/1 assign valid_o = |req_i;
Tests: T1 T2 T3
93 // Mask Generation
94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
95 always_ff @(posedge clk_i or negedge rst_ni) begin
96 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
97 1/1 mask <= '0;
Tests: T1 T2 T3
98 1/1 end else if (valid_o && ready_i) begin
Tests: T1 T2 T3
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T3 T5 T6
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T1 T2 T3
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 unreachable mask <= ppc_out;
104 end
MISSING_ELSE
105 end
106
107 if (EnDataPort == 1) begin: gen_datapath
108 always_comb begin
109 1/1 data_o = '0;
Tests: T1 T2 T3
110 1/1 for (int i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
111 1/1 if (winner[i]) begin
Tests: T1 T2 T3
112 1/1 data_o = data_i[i];
Tests: T3 T5 T6
113 end
MISSING_ELSE
114 end
115 end
116 end else begin: gen_nodatapath
117 assign data_o = '1;
118 // The following signal is used to avoid possible lint errors.
119 logic [DW-1:0] unused_data [N];
120 assign unused_data = data_i;
121 end
122
123 always_comb begin
124 1/1 idx_o = '0;
Tests: T1 T2 T3
125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
126 1/1 if (winner[i]) begin
Tests: T1 T2 T3
127 1/1 idx_o = i[IdxW-1:0];
Tests: T3 T5 T6
128 end
MISSING_ELSE
Cond Coverage for Instance : tb.dut.u_sys_sram_arbiter.gen_arb_ppc.u_reqarb
| Total | Covered | Percent |
Conditions | 8 | 8 | 100.00 |
Logical | 8 | 8 | 100.00 |
Non-Logical | 0 | 0 | |
Event | 0 | 0 | |
LINE 76
EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
---------------1---------------
-1- | Status | Tests |
0 | Covered | T1,T2,T3 |
1 | Covered | T3,T6,T25 |
LINE 84
EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
----------------1--------------- -------------2------------
-1- | -2- | Status | Tests |
0 | 0 | Covered | T1,T2,T3 |
0 | 1 | Covered | T3,T5,T6 |
1 | 0 | Covered | T3,T6,T7 |
LINE 90
EXPRESSION (ready_i ? gen_normal_case.winner : '0)
---1---
-1- | Status | Tests |
0 | Unreachable | |
1 | Covered | T1,T2,T3 |
LINE 98
EXPRESSION (valid_o && ready_i)
---1--- ---2---
-1- | -2- | Status | Tests |
0 | 1 | Covered | T1,T2,T3 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T3,T5,T6 |
LINE 101
EXPRESSION (valid_o && ((!ready_i)))
---1--- ------2-----
-1- | -2- | Status | Tests | Exclude Annotation |
0 | 1 | Unreachable | |
1 | 0 | Excluded | |
VC_COV_UNR |
1 | 1 | Unreachable | |
Branch Coverage for Instance : tb.dut.u_sys_sram_arbiter.gen_arb_ppc.u_reqarb
| Line No. | Total | Covered | Percent |
Branches |
|
10 |
10 |
100.00 |
TERNARY |
76 |
2 |
2 |
100.00 |
TERNARY |
90 |
1 |
1 |
100.00 |
IF |
96 |
3 |
3 |
100.00 |
IF |
126 |
2 |
2 |
100.00 |
IF |
111 |
2 |
2 |
100.00 |
76 assign arb_req = (|masked_req) ? masked_req : req_i;
-1-
==>
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T3,T6,T25 |
0 |
Covered |
T1,T2,T3 |
90 assign gnt_o = (ready_i) ? winner : '0;
-1-
==>
==> (Unreachable)
Branches:
-1- | Status | Tests |
1 |
Covered |
T1,T2,T3 |
0 |
Unreachable |
|
96 if (!rst_ni) begin
-1-
97 mask <= '0;
==>
98 end else if (valid_o && ready_i) begin
-2-
99 // Latch only when requests accepted
100 mask <= mask_next;
==>
101 end else if (valid_o && !ready_i) begin
-3-
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 mask <= ppc_out;
==> (Unreachable)
104 end
MISSING_ELSE
==>
Branches:
-1- | -2- | -3- | Status | Tests |
1 |
- |
- |
Covered |
T1,T2,T3 |
0 |
1 |
- |
Covered |
T3,T5,T6 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T1,T2,T3 |
126 if (winner[i]) begin
-1-
127 idx_o = i[IdxW-1:0];
==>
128 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T3,T5,T6 |
0 |
Covered |
T1,T2,T3 |
111 if (winner[i]) begin
-1-
112 data_o = data_i[i];
==>
113 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T3,T5,T6 |
0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_sys_sram_arbiter.gen_arb_ppc.u_reqarb
Assertion Details
CheckHotOne_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
417740699 |
417650903 |
0 |
0 |
T1 |
1548 |
1484 |
0 |
0 |
T2 |
999 |
912 |
0 |
0 |
T3 |
1783 |
1683 |
0 |
0 |
T4 |
1281 |
1224 |
0 |
0 |
T5 |
1069 |
999 |
0 |
0 |
T6 |
69410 |
69310 |
0 |
0 |
T7 |
96749 |
96678 |
0 |
0 |
T8 |
13829 |
13734 |
0 |
0 |
T9 |
53869 |
53784 |
0 |
0 |
T10 |
440049 |
439974 |
0 |
0 |
CheckNGreaterZero_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
976 |
976 |
0 |
0 |
T1 |
1 |
1 |
0 |
0 |
T2 |
1 |
1 |
0 |
0 |
T3 |
1 |
1 |
0 |
0 |
T4 |
1 |
1 |
0 |
0 |
T5 |
1 |
1 |
0 |
0 |
T6 |
1 |
1 |
0 |
0 |
T7 |
1 |
1 |
0 |
0 |
T8 |
1 |
1 |
0 |
0 |
T9 |
1 |
1 |
0 |
0 |
T10 |
1 |
1 |
0 |
0 |
GntImpliesReady_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
417740699 |
2186845 |
0 |
0 |
T3 |
1783 |
200 |
0 |
0 |
T4 |
1281 |
0 |
0 |
0 |
T5 |
1069 |
1 |
0 |
0 |
T6 |
69410 |
752 |
0 |
0 |
T7 |
96749 |
832 |
0 |
0 |
T8 |
13829 |
832 |
0 |
0 |
T9 |
53869 |
832 |
0 |
0 |
T10 |
440049 |
0 |
0 |
0 |
T11 |
7176 |
832 |
0 |
0 |
T12 |
13983 |
1088 |
0 |
0 |
T13 |
0 |
832 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
417740699 |
2186845 |
0 |
0 |
T3 |
1783 |
200 |
0 |
0 |
T4 |
1281 |
0 |
0 |
0 |
T5 |
1069 |
1 |
0 |
0 |
T6 |
69410 |
752 |
0 |
0 |
T7 |
96749 |
832 |
0 |
0 |
T8 |
13829 |
832 |
0 |
0 |
T9 |
53869 |
832 |
0 |
0 |
T10 |
440049 |
0 |
0 |
0 |
T11 |
7176 |
832 |
0 |
0 |
T12 |
13983 |
1088 |
0 |
0 |
T13 |
0 |
832 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
417740699 |
417650903 |
0 |
0 |
T1 |
1548 |
1484 |
0 |
0 |
T2 |
999 |
912 |
0 |
0 |
T3 |
1783 |
1683 |
0 |
0 |
T4 |
1281 |
1224 |
0 |
0 |
T5 |
1069 |
999 |
0 |
0 |
T6 |
69410 |
69310 |
0 |
0 |
T7 |
96749 |
96678 |
0 |
0 |
T8 |
13829 |
13734 |
0 |
0 |
T9 |
53869 |
53784 |
0 |
0 |
T10 |
440049 |
439974 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
417740699 |
417650903 |
0 |
0 |
T1 |
1548 |
1484 |
0 |
0 |
T2 |
999 |
912 |
0 |
0 |
T3 |
1783 |
1683 |
0 |
0 |
T4 |
1281 |
1224 |
0 |
0 |
T5 |
1069 |
999 |
0 |
0 |
T6 |
69410 |
69310 |
0 |
0 |
T7 |
96749 |
96678 |
0 |
0 |
T8 |
13829 |
13734 |
0 |
0 |
T9 |
53869 |
53784 |
0 |
0 |
T10 |
440049 |
439974 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
417740699 |
2186845 |
0 |
0 |
T3 |
1783 |
200 |
0 |
0 |
T4 |
1281 |
0 |
0 |
0 |
T5 |
1069 |
1 |
0 |
0 |
T6 |
69410 |
752 |
0 |
0 |
T7 |
96749 |
832 |
0 |
0 |
T8 |
13829 |
832 |
0 |
0 |
T9 |
53869 |
832 |
0 |
0 |
T10 |
440049 |
0 |
0 |
0 |
T11 |
7176 |
832 |
0 |
0 |
T12 |
13983 |
1088 |
0 |
0 |
T13 |
0 |
832 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
417740699 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
417740699 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
417740699 |
2186845 |
0 |
0 |
T3 |
1783 |
200 |
0 |
0 |
T4 |
1281 |
0 |
0 |
0 |
T5 |
1069 |
1 |
0 |
0 |
T6 |
69410 |
752 |
0 |
0 |
T7 |
96749 |
832 |
0 |
0 |
T8 |
13829 |
832 |
0 |
0 |
T9 |
53869 |
832 |
0 |
0 |
T10 |
440049 |
0 |
0 |
0 |
T11 |
7176 |
832 |
0 |
0 |
T12 |
13983 |
1088 |
0 |
0 |
T13 |
0 |
832 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
417740699 |
2186845 |
0 |
0 |
T3 |
1783 |
200 |
0 |
0 |
T4 |
1281 |
0 |
0 |
0 |
T5 |
1069 |
1 |
0 |
0 |
T6 |
69410 |
752 |
0 |
0 |
T7 |
96749 |
832 |
0 |
0 |
T8 |
13829 |
832 |
0 |
0 |
T9 |
53869 |
832 |
0 |
0 |
T10 |
440049 |
0 |
0 |
0 |
T11 |
7176 |
832 |
0 |
0 |
T12 |
13983 |
1088 |
0 |
0 |
T13 |
0 |
832 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
417740699 |
2186845 |
0 |
0 |
T3 |
1783 |
200 |
0 |
0 |
T4 |
1281 |
0 |
0 |
0 |
T5 |
1069 |
1 |
0 |
0 |
T6 |
69410 |
752 |
0 |
0 |
T7 |
96749 |
832 |
0 |
0 |
T8 |
13829 |
832 |
0 |
0 |
T9 |
53869 |
832 |
0 |
0 |
T10 |
440049 |
0 |
0 |
0 |
T11 |
7176 |
832 |
0 |
0 |
T12 |
13983 |
1088 |
0 |
0 |
T13 |
0 |
832 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
417740699 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
417740699 |
6 |
0 |
976 |
T66 |
209072 |
1 |
0 |
1 |
T67 |
0 |
1 |
0 |
0 |
T68 |
0 |
1 |
0 |
0 |
T69 |
0 |
1 |
0 |
0 |
T70 |
0 |
1 |
0 |
0 |
T71 |
0 |
1 |
0 |
0 |
T72 |
242606 |
0 |
0 |
1 |
T73 |
90063 |
0 |
0 |
1 |
T74 |
1030 |
0 |
0 |
1 |
T75 |
5585 |
0 |
0 |
1 |
T76 |
114588 |
0 |
0 |
1 |
T77 |
102744 |
0 |
0 |
1 |
T78 |
3978 |
0 |
0 |
1 |
T79 |
844 |
0 |
0 |
1 |
T80 |
1426 |
0 |
0 |
1 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
417740699 |
417650903 |
0 |
0 |
T1 |
1548 |
1484 |
0 |
0 |
T2 |
999 |
912 |
0 |
0 |
T3 |
1783 |
1683 |
0 |
0 |
T4 |
1281 |
1224 |
0 |
0 |
T5 |
1069 |
999 |
0 |
0 |
T6 |
69410 |
69310 |
0 |
0 |
T7 |
96749 |
96678 |
0 |
0 |
T8 |
13829 |
13734 |
0 |
0 |
T9 |
53869 |
53784 |
0 |
0 |
T10 |
440049 |
439974 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
417740699 |
2186845 |
0 |
0 |
T3 |
1783 |
200 |
0 |
0 |
T4 |
1281 |
0 |
0 |
0 |
T5 |
1069 |
1 |
0 |
0 |
T6 |
69410 |
752 |
0 |
0 |
T7 |
96749 |
832 |
0 |
0 |
T8 |
13829 |
832 |
0 |
0 |
T9 |
53869 |
832 |
0 |
0 |
T10 |
440049 |
0 |
0 |
0 |
T11 |
7176 |
832 |
0 |
0 |
T12 |
13983 |
1088 |
0 |
0 |
T13 |
0 |
832 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |