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: T4 T6 T7
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: T4 T6 T7
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: T4 T6 T7
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: T3 T5 T6
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T6 T12 T26
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T3 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: T6 T12 T26
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: T6 T12 T26
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,T12,T26 |
1 | 0 | Covered | T6,T12,T26 |
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 | T3,T5,T6 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T6,T12,T26 |
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 | T13,T36,T38 |
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 | T13,T36,T38 |
1 | 0 | Covered | T13,T36,T38 |
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,T7,T8 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T13,T36,T38 |
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 | T6,T12,T13 |
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,T12,T13 |
1 | 0 | Covered | T4,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 | T4,T6,T7 |
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 |
T6,T12,T13 |
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 |
T4,T6,T7 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T1,T3,T4 |
126 if (winner[i]) begin
-1-
127 idx_o = i[IdxW-1:0];
==>
128 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T4,T6,T7 |
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 |
T4,T6,T7 |
0 |
Covered |
T1,T2,T3 |
Assert Coverage for Module :
prim_arbiter_ppc
Assertion Details
CheckHotOne_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
764827754 |
607413786 |
0 |
0 |
T1 |
1098 |
1022 |
0 |
0 |
T2 |
718 |
619 |
0 |
0 |
T3 |
3510 |
3419 |
0 |
0 |
T4 |
7979 |
7563 |
0 |
0 |
T5 |
282783 |
159838 |
0 |
0 |
T6 |
12826 |
11570 |
0 |
0 |
T7 |
115868 |
69338 |
0 |
0 |
T8 |
214965 |
161168 |
0 |
0 |
T9 |
31717 |
28053 |
0 |
0 |
T10 |
15053 |
12874 |
0 |
0 |
T11 |
134824 |
67412 |
0 |
0 |
T12 |
875398 |
432056 |
0 |
0 |
T13 |
100164 |
99724 |
0 |
0 |
T14 |
0 |
21545 |
0 |
0 |
T17 |
0 |
8624 |
0 |
0 |
T21 |
0 |
328208 |
0 |
0 |
T24 |
0 |
864 |
0 |
0 |
T26 |
0 |
43136 |
0 |
0 |
T27 |
0 |
100040 |
0 |
0 |
T28 |
0 |
2608 |
0 |
0 |
T29 |
0 |
19592 |
0 |
0 |
CheckNGreaterZero_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
2868 |
2868 |
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 |
764827754 |
3906991 |
0 |
0 |
T4 |
7275 |
832 |
0 |
0 |
T5 |
46509 |
0 |
0 |
0 |
T6 |
11650 |
132 |
0 |
0 |
T7 |
69392 |
832 |
0 |
0 |
T8 |
162160 |
832 |
0 |
0 |
T9 |
28149 |
832 |
0 |
0 |
T10 |
12971 |
832 |
0 |
0 |
T11 |
474943 |
832 |
0 |
0 |
T12 |
691565 |
10440 |
0 |
0 |
T13 |
908164 |
840 |
0 |
0 |
T14 |
43606 |
832 |
0 |
0 |
T17 |
8624 |
0 |
0 |
0 |
T18 |
20874 |
0 |
0 |
0 |
T19 |
12480 |
0 |
0 |
0 |
T21 |
0 |
4120 |
0 |
0 |
T24 |
1728 |
0 |
0 |
0 |
T26 |
45452 |
1851 |
0 |
0 |
T28 |
0 |
134 |
0 |
0 |
T36 |
33441 |
520 |
0 |
0 |
T37 |
13418 |
0 |
0 |
0 |
T38 |
0 |
770 |
0 |
0 |
T42 |
0 |
2474 |
0 |
0 |
T43 |
0 |
2577 |
0 |
0 |
T44 |
0 |
281 |
0 |
0 |
T48 |
0 |
4300 |
0 |
0 |
T49 |
126427 |
0 |
0 |
0 |
T62 |
0 |
5594 |
0 |
0 |
T63 |
0 |
10524 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
764827754 |
3906991 |
0 |
0 |
T4 |
7275 |
832 |
0 |
0 |
T5 |
46509 |
0 |
0 |
0 |
T6 |
11650 |
132 |
0 |
0 |
T7 |
69392 |
832 |
0 |
0 |
T8 |
162160 |
832 |
0 |
0 |
T9 |
28149 |
832 |
0 |
0 |
T10 |
12971 |
832 |
0 |
0 |
T11 |
474943 |
832 |
0 |
0 |
T12 |
691565 |
10440 |
0 |
0 |
T13 |
908164 |
840 |
0 |
0 |
T14 |
43606 |
832 |
0 |
0 |
T17 |
8624 |
0 |
0 |
0 |
T18 |
20874 |
0 |
0 |
0 |
T19 |
12480 |
0 |
0 |
0 |
T21 |
0 |
4120 |
0 |
0 |
T24 |
1728 |
0 |
0 |
0 |
T26 |
45452 |
1851 |
0 |
0 |
T28 |
0 |
134 |
0 |
0 |
T36 |
33441 |
520 |
0 |
0 |
T37 |
13418 |
0 |
0 |
0 |
T38 |
0 |
770 |
0 |
0 |
T42 |
0 |
2474 |
0 |
0 |
T43 |
0 |
2577 |
0 |
0 |
T44 |
0 |
281 |
0 |
0 |
T48 |
0 |
4300 |
0 |
0 |
T49 |
126427 |
0 |
0 |
0 |
T62 |
0 |
5594 |
0 |
0 |
T63 |
0 |
10524 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
764827754 |
607413786 |
0 |
0 |
T1 |
1098 |
1022 |
0 |
0 |
T2 |
718 |
619 |
0 |
0 |
T3 |
3510 |
3419 |
0 |
0 |
T4 |
7979 |
7563 |
0 |
0 |
T5 |
282783 |
159838 |
0 |
0 |
T6 |
12826 |
11570 |
0 |
0 |
T7 |
115868 |
69338 |
0 |
0 |
T8 |
214965 |
161168 |
0 |
0 |
T9 |
31717 |
28053 |
0 |
0 |
T10 |
15053 |
12874 |
0 |
0 |
T11 |
134824 |
67412 |
0 |
0 |
T12 |
875398 |
432056 |
0 |
0 |
T13 |
100164 |
99724 |
0 |
0 |
T14 |
0 |
21545 |
0 |
0 |
T17 |
0 |
8624 |
0 |
0 |
T21 |
0 |
328208 |
0 |
0 |
T24 |
0 |
864 |
0 |
0 |
T26 |
0 |
43136 |
0 |
0 |
T27 |
0 |
100040 |
0 |
0 |
T28 |
0 |
2608 |
0 |
0 |
T29 |
0 |
19592 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
764827754 |
607413786 |
0 |
0 |
T1 |
1098 |
1022 |
0 |
0 |
T2 |
718 |
619 |
0 |
0 |
T3 |
3510 |
3419 |
0 |
0 |
T4 |
7979 |
7563 |
0 |
0 |
T5 |
282783 |
159838 |
0 |
0 |
T6 |
12826 |
11570 |
0 |
0 |
T7 |
115868 |
69338 |
0 |
0 |
T8 |
214965 |
161168 |
0 |
0 |
T9 |
31717 |
28053 |
0 |
0 |
T10 |
15053 |
12874 |
0 |
0 |
T11 |
134824 |
67412 |
0 |
0 |
T12 |
875398 |
432056 |
0 |
0 |
T13 |
100164 |
99724 |
0 |
0 |
T14 |
0 |
21545 |
0 |
0 |
T17 |
0 |
8624 |
0 |
0 |
T21 |
0 |
328208 |
0 |
0 |
T24 |
0 |
864 |
0 |
0 |
T26 |
0 |
43136 |
0 |
0 |
T27 |
0 |
100040 |
0 |
0 |
T28 |
0 |
2608 |
0 |
0 |
T29 |
0 |
19592 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
764827754 |
3906991 |
0 |
0 |
T4 |
7275 |
832 |
0 |
0 |
T5 |
46509 |
0 |
0 |
0 |
T6 |
11650 |
132 |
0 |
0 |
T7 |
69392 |
832 |
0 |
0 |
T8 |
162160 |
832 |
0 |
0 |
T9 |
28149 |
832 |
0 |
0 |
T10 |
12971 |
832 |
0 |
0 |
T11 |
474943 |
832 |
0 |
0 |
T12 |
691565 |
10440 |
0 |
0 |
T13 |
908164 |
840 |
0 |
0 |
T14 |
43606 |
832 |
0 |
0 |
T17 |
8624 |
0 |
0 |
0 |
T18 |
20874 |
0 |
0 |
0 |
T19 |
12480 |
0 |
0 |
0 |
T21 |
0 |
4120 |
0 |
0 |
T24 |
1728 |
0 |
0 |
0 |
T26 |
45452 |
1851 |
0 |
0 |
T28 |
0 |
134 |
0 |
0 |
T36 |
33441 |
520 |
0 |
0 |
T37 |
13418 |
0 |
0 |
0 |
T38 |
0 |
770 |
0 |
0 |
T42 |
0 |
2474 |
0 |
0 |
T43 |
0 |
2577 |
0 |
0 |
T44 |
0 |
281 |
0 |
0 |
T48 |
0 |
4300 |
0 |
0 |
T49 |
126427 |
0 |
0 |
0 |
T62 |
0 |
5594 |
0 |
0 |
T63 |
0 |
10524 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
764827754 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
764827754 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
764827754 |
3906991 |
0 |
0 |
T4 |
7275 |
832 |
0 |
0 |
T5 |
46509 |
0 |
0 |
0 |
T6 |
11650 |
132 |
0 |
0 |
T7 |
69392 |
832 |
0 |
0 |
T8 |
162160 |
832 |
0 |
0 |
T9 |
28149 |
832 |
0 |
0 |
T10 |
12971 |
832 |
0 |
0 |
T11 |
474943 |
832 |
0 |
0 |
T12 |
691565 |
10440 |
0 |
0 |
T13 |
908164 |
840 |
0 |
0 |
T14 |
43606 |
832 |
0 |
0 |
T17 |
8624 |
0 |
0 |
0 |
T18 |
20874 |
0 |
0 |
0 |
T19 |
12480 |
0 |
0 |
0 |
T21 |
0 |
4120 |
0 |
0 |
T24 |
1728 |
0 |
0 |
0 |
T26 |
45452 |
1851 |
0 |
0 |
T28 |
0 |
134 |
0 |
0 |
T36 |
33441 |
520 |
0 |
0 |
T37 |
13418 |
0 |
0 |
0 |
T38 |
0 |
770 |
0 |
0 |
T42 |
0 |
2474 |
0 |
0 |
T43 |
0 |
2577 |
0 |
0 |
T44 |
0 |
281 |
0 |
0 |
T48 |
0 |
4300 |
0 |
0 |
T49 |
126427 |
0 |
0 |
0 |
T62 |
0 |
5594 |
0 |
0 |
T63 |
0 |
10524 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
764827754 |
3906991 |
0 |
0 |
T4 |
7275 |
832 |
0 |
0 |
T5 |
46509 |
0 |
0 |
0 |
T6 |
11650 |
132 |
0 |
0 |
T7 |
69392 |
832 |
0 |
0 |
T8 |
162160 |
832 |
0 |
0 |
T9 |
28149 |
832 |
0 |
0 |
T10 |
12971 |
832 |
0 |
0 |
T11 |
474943 |
832 |
0 |
0 |
T12 |
691565 |
10440 |
0 |
0 |
T13 |
908164 |
840 |
0 |
0 |
T14 |
43606 |
832 |
0 |
0 |
T17 |
8624 |
0 |
0 |
0 |
T18 |
20874 |
0 |
0 |
0 |
T19 |
12480 |
0 |
0 |
0 |
T21 |
0 |
4120 |
0 |
0 |
T24 |
1728 |
0 |
0 |
0 |
T26 |
45452 |
1851 |
0 |
0 |
T28 |
0 |
134 |
0 |
0 |
T36 |
33441 |
520 |
0 |
0 |
T37 |
13418 |
0 |
0 |
0 |
T38 |
0 |
770 |
0 |
0 |
T42 |
0 |
2474 |
0 |
0 |
T43 |
0 |
2577 |
0 |
0 |
T44 |
0 |
281 |
0 |
0 |
T48 |
0 |
4300 |
0 |
0 |
T49 |
126427 |
0 |
0 |
0 |
T62 |
0 |
5594 |
0 |
0 |
T63 |
0 |
10524 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
764827754 |
3906991 |
0 |
0 |
T4 |
7275 |
832 |
0 |
0 |
T5 |
46509 |
0 |
0 |
0 |
T6 |
11650 |
132 |
0 |
0 |
T7 |
69392 |
832 |
0 |
0 |
T8 |
162160 |
832 |
0 |
0 |
T9 |
28149 |
832 |
0 |
0 |
T10 |
12971 |
832 |
0 |
0 |
T11 |
474943 |
832 |
0 |
0 |
T12 |
691565 |
10440 |
0 |
0 |
T13 |
908164 |
840 |
0 |
0 |
T14 |
43606 |
832 |
0 |
0 |
T17 |
8624 |
0 |
0 |
0 |
T18 |
20874 |
0 |
0 |
0 |
T19 |
12480 |
0 |
0 |
0 |
T21 |
0 |
4120 |
0 |
0 |
T24 |
1728 |
0 |
0 |
0 |
T26 |
45452 |
1851 |
0 |
0 |
T28 |
0 |
134 |
0 |
0 |
T36 |
33441 |
520 |
0 |
0 |
T37 |
13418 |
0 |
0 |
0 |
T38 |
0 |
770 |
0 |
0 |
T42 |
0 |
2474 |
0 |
0 |
T43 |
0 |
2577 |
0 |
0 |
T44 |
0 |
281 |
0 |
0 |
T48 |
0 |
4300 |
0 |
0 |
T49 |
126427 |
0 |
0 |
0 |
T62 |
0 |
5594 |
0 |
0 |
T63 |
0 |
10524 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
764827754 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
764827754 |
5 |
0 |
956 |
T64 |
573642 |
1 |
0 |
1 |
T65 |
0 |
1 |
0 |
0 |
T66 |
0 |
1 |
0 |
0 |
T67 |
0 |
1 |
0 |
0 |
T68 |
0 |
1 |
0 |
0 |
T69 |
2432 |
0 |
0 |
1 |
T70 |
999 |
0 |
0 |
1 |
T71 |
518583 |
0 |
0 |
1 |
T72 |
156031 |
0 |
0 |
1 |
T73 |
597249 |
0 |
0 |
1 |
T74 |
798754 |
0 |
0 |
1 |
T75 |
360434 |
0 |
0 |
1 |
T76 |
96542 |
0 |
0 |
1 |
T77 |
10801 |
0 |
0 |
1 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
764827754 |
607413786 |
0 |
0 |
T1 |
1098 |
1022 |
0 |
0 |
T2 |
718 |
619 |
0 |
0 |
T3 |
3510 |
3419 |
0 |
0 |
T4 |
7979 |
7563 |
0 |
0 |
T5 |
282783 |
159838 |
0 |
0 |
T6 |
12826 |
11570 |
0 |
0 |
T7 |
115868 |
69338 |
0 |
0 |
T8 |
214965 |
161168 |
0 |
0 |
T9 |
31717 |
28053 |
0 |
0 |
T10 |
15053 |
12874 |
0 |
0 |
T11 |
134824 |
67412 |
0 |
0 |
T12 |
875398 |
432056 |
0 |
0 |
T13 |
100164 |
99724 |
0 |
0 |
T14 |
0 |
21545 |
0 |
0 |
T17 |
0 |
8624 |
0 |
0 |
T21 |
0 |
328208 |
0 |
0 |
T24 |
0 |
864 |
0 |
0 |
T26 |
0 |
43136 |
0 |
0 |
T27 |
0 |
100040 |
0 |
0 |
T28 |
0 |
2608 |
0 |
0 |
T29 |
0 |
19592 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
764827754 |
3906991 |
0 |
0 |
T4 |
7275 |
832 |
0 |
0 |
T5 |
46509 |
0 |
0 |
0 |
T6 |
11650 |
132 |
0 |
0 |
T7 |
69392 |
832 |
0 |
0 |
T8 |
162160 |
832 |
0 |
0 |
T9 |
28149 |
832 |
0 |
0 |
T10 |
12971 |
832 |
0 |
0 |
T11 |
474943 |
832 |
0 |
0 |
T12 |
691565 |
10440 |
0 |
0 |
T13 |
908164 |
840 |
0 |
0 |
T14 |
43606 |
832 |
0 |
0 |
T17 |
8624 |
0 |
0 |
0 |
T18 |
20874 |
0 |
0 |
0 |
T19 |
12480 |
0 |
0 |
0 |
T21 |
0 |
4120 |
0 |
0 |
T24 |
1728 |
0 |
0 |
0 |
T26 |
45452 |
1851 |
0 |
0 |
T28 |
0 |
134 |
0 |
0 |
T36 |
33441 |
520 |
0 |
0 |
T37 |
13418 |
0 |
0 |
0 |
T38 |
0 |
770 |
0 |
0 |
T42 |
0 |
2474 |
0 |
0 |
T43 |
0 |
2577 |
0 |
0 |
T44 |
0 |
281 |
0 |
0 |
T48 |
0 |
4300 |
0 |
0 |
T49 |
126427 |
0 |
0 |
0 |
T62 |
0 |
5594 |
0 |
0 |
T63 |
0 |
10524 |
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: T3 T5 T6
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T6 T12 T26
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T3 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: T6 T12 T26
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: T6 T12 T26
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,T12,T26 |
1 | 0 | Covered | T6,T12,T26 |
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 | T3,T5,T6 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T6,T12,T26 |
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 |
T6,T12,T26 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T3,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 |
T6,T12,T26 |
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 |
T6,T12,T26 |
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 |
155902211 |
30066769 |
0 |
0 |
T3 |
576 |
576 |
0 |
0 |
T4 |
352 |
0 |
0 |
0 |
T5 |
118137 |
113416 |
0 |
0 |
T6 |
1176 |
1176 |
0 |
0 |
T7 |
46476 |
0 |
0 |
0 |
T8 |
52805 |
0 |
0 |
0 |
T9 |
3568 |
0 |
0 |
0 |
T10 |
2082 |
0 |
0 |
0 |
T11 |
67412 |
0 |
0 |
0 |
T12 |
437699 |
432056 |
0 |
0 |
T21 |
0 |
328208 |
0 |
0 |
T24 |
0 |
864 |
0 |
0 |
T26 |
0 |
43136 |
0 |
0 |
T27 |
0 |
100040 |
0 |
0 |
T28 |
0 |
2608 |
0 |
0 |
T29 |
0 |
19592 |
0 |
0 |
CheckNGreaterZero_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
956 |
956 |
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 |
155902211 |
659538 |
0 |
0 |
T6 |
1176 |
102 |
0 |
0 |
T7 |
46476 |
0 |
0 |
0 |
T8 |
52805 |
0 |
0 |
0 |
T9 |
3568 |
0 |
0 |
0 |
T10 |
2082 |
0 |
0 |
0 |
T11 |
67412 |
0 |
0 |
0 |
T12 |
437699 |
7057 |
0 |
0 |
T13 |
100164 |
0 |
0 |
0 |
T14 |
21803 |
0 |
0 |
0 |
T21 |
0 |
3663 |
0 |
0 |
T24 |
864 |
0 |
0 |
0 |
T26 |
0 |
1851 |
0 |
0 |
T28 |
0 |
134 |
0 |
0 |
T42 |
0 |
2474 |
0 |
0 |
T44 |
0 |
281 |
0 |
0 |
T48 |
0 |
3416 |
0 |
0 |
T62 |
0 |
5594 |
0 |
0 |
T63 |
0 |
6833 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
659538 |
0 |
0 |
T6 |
1176 |
102 |
0 |
0 |
T7 |
46476 |
0 |
0 |
0 |
T8 |
52805 |
0 |
0 |
0 |
T9 |
3568 |
0 |
0 |
0 |
T10 |
2082 |
0 |
0 |
0 |
T11 |
67412 |
0 |
0 |
0 |
T12 |
437699 |
7057 |
0 |
0 |
T13 |
100164 |
0 |
0 |
0 |
T14 |
21803 |
0 |
0 |
0 |
T21 |
0 |
3663 |
0 |
0 |
T24 |
864 |
0 |
0 |
0 |
T26 |
0 |
1851 |
0 |
0 |
T28 |
0 |
134 |
0 |
0 |
T42 |
0 |
2474 |
0 |
0 |
T44 |
0 |
281 |
0 |
0 |
T48 |
0 |
3416 |
0 |
0 |
T62 |
0 |
5594 |
0 |
0 |
T63 |
0 |
6833 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
30066769 |
0 |
0 |
T3 |
576 |
576 |
0 |
0 |
T4 |
352 |
0 |
0 |
0 |
T5 |
118137 |
113416 |
0 |
0 |
T6 |
1176 |
1176 |
0 |
0 |
T7 |
46476 |
0 |
0 |
0 |
T8 |
52805 |
0 |
0 |
0 |
T9 |
3568 |
0 |
0 |
0 |
T10 |
2082 |
0 |
0 |
0 |
T11 |
67412 |
0 |
0 |
0 |
T12 |
437699 |
432056 |
0 |
0 |
T21 |
0 |
328208 |
0 |
0 |
T24 |
0 |
864 |
0 |
0 |
T26 |
0 |
43136 |
0 |
0 |
T27 |
0 |
100040 |
0 |
0 |
T28 |
0 |
2608 |
0 |
0 |
T29 |
0 |
19592 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
30066769 |
0 |
0 |
T3 |
576 |
576 |
0 |
0 |
T4 |
352 |
0 |
0 |
0 |
T5 |
118137 |
113416 |
0 |
0 |
T6 |
1176 |
1176 |
0 |
0 |
T7 |
46476 |
0 |
0 |
0 |
T8 |
52805 |
0 |
0 |
0 |
T9 |
3568 |
0 |
0 |
0 |
T10 |
2082 |
0 |
0 |
0 |
T11 |
67412 |
0 |
0 |
0 |
T12 |
437699 |
432056 |
0 |
0 |
T21 |
0 |
328208 |
0 |
0 |
T24 |
0 |
864 |
0 |
0 |
T26 |
0 |
43136 |
0 |
0 |
T27 |
0 |
100040 |
0 |
0 |
T28 |
0 |
2608 |
0 |
0 |
T29 |
0 |
19592 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
659538 |
0 |
0 |
T6 |
1176 |
102 |
0 |
0 |
T7 |
46476 |
0 |
0 |
0 |
T8 |
52805 |
0 |
0 |
0 |
T9 |
3568 |
0 |
0 |
0 |
T10 |
2082 |
0 |
0 |
0 |
T11 |
67412 |
0 |
0 |
0 |
T12 |
437699 |
7057 |
0 |
0 |
T13 |
100164 |
0 |
0 |
0 |
T14 |
21803 |
0 |
0 |
0 |
T21 |
0 |
3663 |
0 |
0 |
T24 |
864 |
0 |
0 |
0 |
T26 |
0 |
1851 |
0 |
0 |
T28 |
0 |
134 |
0 |
0 |
T42 |
0 |
2474 |
0 |
0 |
T44 |
0 |
281 |
0 |
0 |
T48 |
0 |
3416 |
0 |
0 |
T62 |
0 |
5594 |
0 |
0 |
T63 |
0 |
6833 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
659538 |
0 |
0 |
T6 |
1176 |
102 |
0 |
0 |
T7 |
46476 |
0 |
0 |
0 |
T8 |
52805 |
0 |
0 |
0 |
T9 |
3568 |
0 |
0 |
0 |
T10 |
2082 |
0 |
0 |
0 |
T11 |
67412 |
0 |
0 |
0 |
T12 |
437699 |
7057 |
0 |
0 |
T13 |
100164 |
0 |
0 |
0 |
T14 |
21803 |
0 |
0 |
0 |
T21 |
0 |
3663 |
0 |
0 |
T24 |
864 |
0 |
0 |
0 |
T26 |
0 |
1851 |
0 |
0 |
T28 |
0 |
134 |
0 |
0 |
T42 |
0 |
2474 |
0 |
0 |
T44 |
0 |
281 |
0 |
0 |
T48 |
0 |
3416 |
0 |
0 |
T62 |
0 |
5594 |
0 |
0 |
T63 |
0 |
6833 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
659538 |
0 |
0 |
T6 |
1176 |
102 |
0 |
0 |
T7 |
46476 |
0 |
0 |
0 |
T8 |
52805 |
0 |
0 |
0 |
T9 |
3568 |
0 |
0 |
0 |
T10 |
2082 |
0 |
0 |
0 |
T11 |
67412 |
0 |
0 |
0 |
T12 |
437699 |
7057 |
0 |
0 |
T13 |
100164 |
0 |
0 |
0 |
T14 |
21803 |
0 |
0 |
0 |
T21 |
0 |
3663 |
0 |
0 |
T24 |
864 |
0 |
0 |
0 |
T26 |
0 |
1851 |
0 |
0 |
T28 |
0 |
134 |
0 |
0 |
T42 |
0 |
2474 |
0 |
0 |
T44 |
0 |
281 |
0 |
0 |
T48 |
0 |
3416 |
0 |
0 |
T62 |
0 |
5594 |
0 |
0 |
T63 |
0 |
6833 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
659538 |
0 |
0 |
T6 |
1176 |
102 |
0 |
0 |
T7 |
46476 |
0 |
0 |
0 |
T8 |
52805 |
0 |
0 |
0 |
T9 |
3568 |
0 |
0 |
0 |
T10 |
2082 |
0 |
0 |
0 |
T11 |
67412 |
0 |
0 |
0 |
T12 |
437699 |
7057 |
0 |
0 |
T13 |
100164 |
0 |
0 |
0 |
T14 |
21803 |
0 |
0 |
0 |
T21 |
0 |
3663 |
0 |
0 |
T24 |
864 |
0 |
0 |
0 |
T26 |
0 |
1851 |
0 |
0 |
T28 |
0 |
134 |
0 |
0 |
T42 |
0 |
2474 |
0 |
0 |
T44 |
0 |
281 |
0 |
0 |
T48 |
0 |
3416 |
0 |
0 |
T62 |
0 |
5594 |
0 |
0 |
T63 |
0 |
6833 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
0 |
0 |
0 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
30066769 |
0 |
0 |
T3 |
576 |
576 |
0 |
0 |
T4 |
352 |
0 |
0 |
0 |
T5 |
118137 |
113416 |
0 |
0 |
T6 |
1176 |
1176 |
0 |
0 |
T7 |
46476 |
0 |
0 |
0 |
T8 |
52805 |
0 |
0 |
0 |
T9 |
3568 |
0 |
0 |
0 |
T10 |
2082 |
0 |
0 |
0 |
T11 |
67412 |
0 |
0 |
0 |
T12 |
437699 |
432056 |
0 |
0 |
T21 |
0 |
328208 |
0 |
0 |
T24 |
0 |
864 |
0 |
0 |
T26 |
0 |
43136 |
0 |
0 |
T27 |
0 |
100040 |
0 |
0 |
T28 |
0 |
2608 |
0 |
0 |
T29 |
0 |
19592 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
659538 |
0 |
0 |
T6 |
1176 |
102 |
0 |
0 |
T7 |
46476 |
0 |
0 |
0 |
T8 |
52805 |
0 |
0 |
0 |
T9 |
3568 |
0 |
0 |
0 |
T10 |
2082 |
0 |
0 |
0 |
T11 |
67412 |
0 |
0 |
0 |
T12 |
437699 |
7057 |
0 |
0 |
T13 |
100164 |
0 |
0 |
0 |
T14 |
21803 |
0 |
0 |
0 |
T21 |
0 |
3663 |
0 |
0 |
T24 |
864 |
0 |
0 |
0 |
T26 |
0 |
1851 |
0 |
0 |
T28 |
0 |
134 |
0 |
0 |
T42 |
0 |
2474 |
0 |
0 |
T44 |
0 |
281 |
0 |
0 |
T48 |
0 |
3416 |
0 |
0 |
T62 |
0 |
5594 |
0 |
0 |
T63 |
0 |
6833 |
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: T4 T7 T8
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T13 T36 T38
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T4 T7 T8
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: T13 T36 T38
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: T13 T36 T38
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 | T13,T36,T38 |
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 | T13,T36,T38 |
1 | 0 | Covered | T13,T36,T38 |
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,T7,T8 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T13,T36,T38 |
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 |
T13,T36,T38 |
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 |
T13,T36,T38 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T4,T7,T8 |
126 if (winner[i]) begin
-1-
127 idx_o = i[IdxW-1:0];
==>
128 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T13,T36,T38 |
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 |
T13,T36,T38 |
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 |
155902211 |
124410175 |
0 |
0 |
T4 |
352 |
352 |
0 |
0 |
T5 |
118137 |
0 |
0 |
0 |
T6 |
1176 |
0 |
0 |
0 |
T7 |
46476 |
46476 |
0 |
0 |
T8 |
52805 |
51904 |
0 |
0 |
T9 |
3568 |
3568 |
0 |
0 |
T10 |
2082 |
2082 |
0 |
0 |
T11 |
67412 |
67412 |
0 |
0 |
T12 |
437699 |
0 |
0 |
0 |
T13 |
100164 |
99724 |
0 |
0 |
T14 |
0 |
21545 |
0 |
0 |
T17 |
0 |
8624 |
0 |
0 |
T18 |
0 |
20752 |
0 |
0 |
CheckNGreaterZero_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
956 |
956 |
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 |
155902211 |
879726 |
0 |
0 |
T13 |
100164 |
4 |
0 |
0 |
T14 |
21803 |
0 |
0 |
0 |
T17 |
8624 |
0 |
0 |
0 |
T18 |
20874 |
0 |
0 |
0 |
T19 |
12480 |
0 |
0 |
0 |
T21 |
0 |
457 |
0 |
0 |
T24 |
864 |
0 |
0 |
0 |
T26 |
45452 |
0 |
0 |
0 |
T36 |
33441 |
520 |
0 |
0 |
T37 |
13418 |
0 |
0 |
0 |
T38 |
0 |
770 |
0 |
0 |
T43 |
0 |
2577 |
0 |
0 |
T48 |
0 |
884 |
0 |
0 |
T49 |
126427 |
0 |
0 |
0 |
T50 |
0 |
4 |
0 |
0 |
T55 |
0 |
2995 |
0 |
0 |
T63 |
0 |
3691 |
0 |
0 |
T78 |
0 |
257 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
879726 |
0 |
0 |
T13 |
100164 |
4 |
0 |
0 |
T14 |
21803 |
0 |
0 |
0 |
T17 |
8624 |
0 |
0 |
0 |
T18 |
20874 |
0 |
0 |
0 |
T19 |
12480 |
0 |
0 |
0 |
T21 |
0 |
457 |
0 |
0 |
T24 |
864 |
0 |
0 |
0 |
T26 |
45452 |
0 |
0 |
0 |
T36 |
33441 |
520 |
0 |
0 |
T37 |
13418 |
0 |
0 |
0 |
T38 |
0 |
770 |
0 |
0 |
T43 |
0 |
2577 |
0 |
0 |
T48 |
0 |
884 |
0 |
0 |
T49 |
126427 |
0 |
0 |
0 |
T50 |
0 |
4 |
0 |
0 |
T55 |
0 |
2995 |
0 |
0 |
T63 |
0 |
3691 |
0 |
0 |
T78 |
0 |
257 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
124410175 |
0 |
0 |
T4 |
352 |
352 |
0 |
0 |
T5 |
118137 |
0 |
0 |
0 |
T6 |
1176 |
0 |
0 |
0 |
T7 |
46476 |
46476 |
0 |
0 |
T8 |
52805 |
51904 |
0 |
0 |
T9 |
3568 |
3568 |
0 |
0 |
T10 |
2082 |
2082 |
0 |
0 |
T11 |
67412 |
67412 |
0 |
0 |
T12 |
437699 |
0 |
0 |
0 |
T13 |
100164 |
99724 |
0 |
0 |
T14 |
0 |
21545 |
0 |
0 |
T17 |
0 |
8624 |
0 |
0 |
T18 |
0 |
20752 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
124410175 |
0 |
0 |
T4 |
352 |
352 |
0 |
0 |
T5 |
118137 |
0 |
0 |
0 |
T6 |
1176 |
0 |
0 |
0 |
T7 |
46476 |
46476 |
0 |
0 |
T8 |
52805 |
51904 |
0 |
0 |
T9 |
3568 |
3568 |
0 |
0 |
T10 |
2082 |
2082 |
0 |
0 |
T11 |
67412 |
67412 |
0 |
0 |
T12 |
437699 |
0 |
0 |
0 |
T13 |
100164 |
99724 |
0 |
0 |
T14 |
0 |
21545 |
0 |
0 |
T17 |
0 |
8624 |
0 |
0 |
T18 |
0 |
20752 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
879726 |
0 |
0 |
T13 |
100164 |
4 |
0 |
0 |
T14 |
21803 |
0 |
0 |
0 |
T17 |
8624 |
0 |
0 |
0 |
T18 |
20874 |
0 |
0 |
0 |
T19 |
12480 |
0 |
0 |
0 |
T21 |
0 |
457 |
0 |
0 |
T24 |
864 |
0 |
0 |
0 |
T26 |
45452 |
0 |
0 |
0 |
T36 |
33441 |
520 |
0 |
0 |
T37 |
13418 |
0 |
0 |
0 |
T38 |
0 |
770 |
0 |
0 |
T43 |
0 |
2577 |
0 |
0 |
T48 |
0 |
884 |
0 |
0 |
T49 |
126427 |
0 |
0 |
0 |
T50 |
0 |
4 |
0 |
0 |
T55 |
0 |
2995 |
0 |
0 |
T63 |
0 |
3691 |
0 |
0 |
T78 |
0 |
257 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
879726 |
0 |
0 |
T13 |
100164 |
4 |
0 |
0 |
T14 |
21803 |
0 |
0 |
0 |
T17 |
8624 |
0 |
0 |
0 |
T18 |
20874 |
0 |
0 |
0 |
T19 |
12480 |
0 |
0 |
0 |
T21 |
0 |
457 |
0 |
0 |
T24 |
864 |
0 |
0 |
0 |
T26 |
45452 |
0 |
0 |
0 |
T36 |
33441 |
520 |
0 |
0 |
T37 |
13418 |
0 |
0 |
0 |
T38 |
0 |
770 |
0 |
0 |
T43 |
0 |
2577 |
0 |
0 |
T48 |
0 |
884 |
0 |
0 |
T49 |
126427 |
0 |
0 |
0 |
T50 |
0 |
4 |
0 |
0 |
T55 |
0 |
2995 |
0 |
0 |
T63 |
0 |
3691 |
0 |
0 |
T78 |
0 |
257 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
879726 |
0 |
0 |
T13 |
100164 |
4 |
0 |
0 |
T14 |
21803 |
0 |
0 |
0 |
T17 |
8624 |
0 |
0 |
0 |
T18 |
20874 |
0 |
0 |
0 |
T19 |
12480 |
0 |
0 |
0 |
T21 |
0 |
457 |
0 |
0 |
T24 |
864 |
0 |
0 |
0 |
T26 |
45452 |
0 |
0 |
0 |
T36 |
33441 |
520 |
0 |
0 |
T37 |
13418 |
0 |
0 |
0 |
T38 |
0 |
770 |
0 |
0 |
T43 |
0 |
2577 |
0 |
0 |
T48 |
0 |
884 |
0 |
0 |
T49 |
126427 |
0 |
0 |
0 |
T50 |
0 |
4 |
0 |
0 |
T55 |
0 |
2995 |
0 |
0 |
T63 |
0 |
3691 |
0 |
0 |
T78 |
0 |
257 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
879726 |
0 |
0 |
T13 |
100164 |
4 |
0 |
0 |
T14 |
21803 |
0 |
0 |
0 |
T17 |
8624 |
0 |
0 |
0 |
T18 |
20874 |
0 |
0 |
0 |
T19 |
12480 |
0 |
0 |
0 |
T21 |
0 |
457 |
0 |
0 |
T24 |
864 |
0 |
0 |
0 |
T26 |
45452 |
0 |
0 |
0 |
T36 |
33441 |
520 |
0 |
0 |
T37 |
13418 |
0 |
0 |
0 |
T38 |
0 |
770 |
0 |
0 |
T43 |
0 |
2577 |
0 |
0 |
T48 |
0 |
884 |
0 |
0 |
T49 |
126427 |
0 |
0 |
0 |
T50 |
0 |
4 |
0 |
0 |
T55 |
0 |
2995 |
0 |
0 |
T63 |
0 |
3691 |
0 |
0 |
T78 |
0 |
257 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
0 |
0 |
0 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
124410175 |
0 |
0 |
T4 |
352 |
352 |
0 |
0 |
T5 |
118137 |
0 |
0 |
0 |
T6 |
1176 |
0 |
0 |
0 |
T7 |
46476 |
46476 |
0 |
0 |
T8 |
52805 |
51904 |
0 |
0 |
T9 |
3568 |
3568 |
0 |
0 |
T10 |
2082 |
2082 |
0 |
0 |
T11 |
67412 |
67412 |
0 |
0 |
T12 |
437699 |
0 |
0 |
0 |
T13 |
100164 |
99724 |
0 |
0 |
T14 |
0 |
21545 |
0 |
0 |
T17 |
0 |
8624 |
0 |
0 |
T18 |
0 |
20752 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
155902211 |
879726 |
0 |
0 |
T13 |
100164 |
4 |
0 |
0 |
T14 |
21803 |
0 |
0 |
0 |
T17 |
8624 |
0 |
0 |
0 |
T18 |
20874 |
0 |
0 |
0 |
T19 |
12480 |
0 |
0 |
0 |
T21 |
0 |
457 |
0 |
0 |
T24 |
864 |
0 |
0 |
0 |
T26 |
45452 |
0 |
0 |
0 |
T36 |
33441 |
520 |
0 |
0 |
T37 |
13418 |
0 |
0 |
0 |
T38 |
0 |
770 |
0 |
0 |
T43 |
0 |
2577 |
0 |
0 |
T48 |
0 |
884 |
0 |
0 |
T49 |
126427 |
0 |
0 |
0 |
T50 |
0 |
4 |
0 |
0 |
T55 |
0 |
2995 |
0 |
0 |
T63 |
0 |
3691 |
0 |
0 |
T78 |
0 |
257 |
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: T4 T6 T7
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: T4 T6 T7
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: T4 T6 T7
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 | T6,T12,T13 |
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,T12,T13 |
1 | 0 | Covered | T4,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 | T4,T6,T7 |
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 |
T6,T12,T13 |
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 |
T4,T6,T7 |
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 |
T4,T6,T7 |
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 |
T4,T6,T7 |
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 |
453023332 |
452936842 |
0 |
0 |
T1 |
1098 |
1022 |
0 |
0 |
T2 |
718 |
619 |
0 |
0 |
T3 |
2934 |
2843 |
0 |
0 |
T4 |
7275 |
7211 |
0 |
0 |
T5 |
46509 |
46422 |
0 |
0 |
T6 |
10474 |
10394 |
0 |
0 |
T7 |
22916 |
22862 |
0 |
0 |
T8 |
109355 |
109264 |
0 |
0 |
T9 |
24581 |
24485 |
0 |
0 |
T10 |
10889 |
10792 |
0 |
0 |
CheckNGreaterZero_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
956 |
956 |
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 |
453023332 |
2367727 |
0 |
0 |
T4 |
7275 |
832 |
0 |
0 |
T5 |
46509 |
0 |
0 |
0 |
T6 |
10474 |
30 |
0 |
0 |
T7 |
22916 |
832 |
0 |
0 |
T8 |
109355 |
832 |
0 |
0 |
T9 |
24581 |
832 |
0 |
0 |
T10 |
10889 |
832 |
0 |
0 |
T11 |
407531 |
832 |
0 |
0 |
T12 |
253866 |
3383 |
0 |
0 |
T13 |
707836 |
836 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453023332 |
2367727 |
0 |
0 |
T4 |
7275 |
832 |
0 |
0 |
T5 |
46509 |
0 |
0 |
0 |
T6 |
10474 |
30 |
0 |
0 |
T7 |
22916 |
832 |
0 |
0 |
T8 |
109355 |
832 |
0 |
0 |
T9 |
24581 |
832 |
0 |
0 |
T10 |
10889 |
832 |
0 |
0 |
T11 |
407531 |
832 |
0 |
0 |
T12 |
253866 |
3383 |
0 |
0 |
T13 |
707836 |
836 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453023332 |
452936842 |
0 |
0 |
T1 |
1098 |
1022 |
0 |
0 |
T2 |
718 |
619 |
0 |
0 |
T3 |
2934 |
2843 |
0 |
0 |
T4 |
7275 |
7211 |
0 |
0 |
T5 |
46509 |
46422 |
0 |
0 |
T6 |
10474 |
10394 |
0 |
0 |
T7 |
22916 |
22862 |
0 |
0 |
T8 |
109355 |
109264 |
0 |
0 |
T9 |
24581 |
24485 |
0 |
0 |
T10 |
10889 |
10792 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453023332 |
452936842 |
0 |
0 |
T1 |
1098 |
1022 |
0 |
0 |
T2 |
718 |
619 |
0 |
0 |
T3 |
2934 |
2843 |
0 |
0 |
T4 |
7275 |
7211 |
0 |
0 |
T5 |
46509 |
46422 |
0 |
0 |
T6 |
10474 |
10394 |
0 |
0 |
T7 |
22916 |
22862 |
0 |
0 |
T8 |
109355 |
109264 |
0 |
0 |
T9 |
24581 |
24485 |
0 |
0 |
T10 |
10889 |
10792 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453023332 |
2367727 |
0 |
0 |
T4 |
7275 |
832 |
0 |
0 |
T5 |
46509 |
0 |
0 |
0 |
T6 |
10474 |
30 |
0 |
0 |
T7 |
22916 |
832 |
0 |
0 |
T8 |
109355 |
832 |
0 |
0 |
T9 |
24581 |
832 |
0 |
0 |
T10 |
10889 |
832 |
0 |
0 |
T11 |
407531 |
832 |
0 |
0 |
T12 |
253866 |
3383 |
0 |
0 |
T13 |
707836 |
836 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453023332 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453023332 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453023332 |
2367727 |
0 |
0 |
T4 |
7275 |
832 |
0 |
0 |
T5 |
46509 |
0 |
0 |
0 |
T6 |
10474 |
30 |
0 |
0 |
T7 |
22916 |
832 |
0 |
0 |
T8 |
109355 |
832 |
0 |
0 |
T9 |
24581 |
832 |
0 |
0 |
T10 |
10889 |
832 |
0 |
0 |
T11 |
407531 |
832 |
0 |
0 |
T12 |
253866 |
3383 |
0 |
0 |
T13 |
707836 |
836 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453023332 |
2367727 |
0 |
0 |
T4 |
7275 |
832 |
0 |
0 |
T5 |
46509 |
0 |
0 |
0 |
T6 |
10474 |
30 |
0 |
0 |
T7 |
22916 |
832 |
0 |
0 |
T8 |
109355 |
832 |
0 |
0 |
T9 |
24581 |
832 |
0 |
0 |
T10 |
10889 |
832 |
0 |
0 |
T11 |
407531 |
832 |
0 |
0 |
T12 |
253866 |
3383 |
0 |
0 |
T13 |
707836 |
836 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453023332 |
2367727 |
0 |
0 |
T4 |
7275 |
832 |
0 |
0 |
T5 |
46509 |
0 |
0 |
0 |
T6 |
10474 |
30 |
0 |
0 |
T7 |
22916 |
832 |
0 |
0 |
T8 |
109355 |
832 |
0 |
0 |
T9 |
24581 |
832 |
0 |
0 |
T10 |
10889 |
832 |
0 |
0 |
T11 |
407531 |
832 |
0 |
0 |
T12 |
253866 |
3383 |
0 |
0 |
T13 |
707836 |
836 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453023332 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453023332 |
5 |
0 |
956 |
T64 |
573642 |
1 |
0 |
1 |
T65 |
0 |
1 |
0 |
0 |
T66 |
0 |
1 |
0 |
0 |
T67 |
0 |
1 |
0 |
0 |
T68 |
0 |
1 |
0 |
0 |
T69 |
2432 |
0 |
0 |
1 |
T70 |
999 |
0 |
0 |
1 |
T71 |
518583 |
0 |
0 |
1 |
T72 |
156031 |
0 |
0 |
1 |
T73 |
597249 |
0 |
0 |
1 |
T74 |
798754 |
0 |
0 |
1 |
T75 |
360434 |
0 |
0 |
1 |
T76 |
96542 |
0 |
0 |
1 |
T77 |
10801 |
0 |
0 |
1 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453023332 |
452936842 |
0 |
0 |
T1 |
1098 |
1022 |
0 |
0 |
T2 |
718 |
619 |
0 |
0 |
T3 |
2934 |
2843 |
0 |
0 |
T4 |
7275 |
7211 |
0 |
0 |
T5 |
46509 |
46422 |
0 |
0 |
T6 |
10474 |
10394 |
0 |
0 |
T7 |
22916 |
22862 |
0 |
0 |
T8 |
109355 |
109264 |
0 |
0 |
T9 |
24581 |
24485 |
0 |
0 |
T10 |
10889 |
10792 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453023332 |
2367727 |
0 |
0 |
T4 |
7275 |
832 |
0 |
0 |
T5 |
46509 |
0 |
0 |
0 |
T6 |
10474 |
30 |
0 |
0 |
T7 |
22916 |
832 |
0 |
0 |
T8 |
109355 |
832 |
0 |
0 |
T9 |
24581 |
832 |
0 |
0 |
T10 |
10889 |
832 |
0 |
0 |
T11 |
407531 |
832 |
0 |
0 |
T12 |
253866 |
3383 |
0 |
0 |
T13 |
707836 |
836 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |