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: T5 T6 T10
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: T5 T6 T10
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 T10
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 T13
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T5 T17 T28
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T4 T5 T13
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 T17 T28
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 T17 T28
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 | T5,T17,T28 |
1 | 0 | Covered | T5,T17,T28 |
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,T13 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T5,T17,T28 |
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 | T44,T56,T45 |
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 | T44,T56,T45 |
1 | 0 | Covered | T44,T56,T45 |
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 | T11,T14,T15 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T44,T56,T45 |
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 | T5,T17,T28 |
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 | T5,T17,T28 |
1 | 0 | Covered | T5,T6,T10 |
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 | T5,T6,T10 |
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 |
T5,T17,T28 |
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,T10 |
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 |
T5,T6,T10 |
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,T10 |
0 |
Covered |
T1,T2,T3 |
Assert Coverage for Module :
prim_arbiter_ppc
Assertion Details
CheckHotOne_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
662341152 |
530901362 |
0 |
0 |
T1 |
966 |
911 |
0 |
0 |
T2 |
1766 |
1672 |
0 |
0 |
T3 |
1423 |
1354 |
0 |
0 |
T4 |
2878 |
2818 |
0 |
0 |
T5 |
3674 |
3577 |
0 |
0 |
T6 |
3140 |
3049 |
0 |
0 |
T7 |
1592 |
1508 |
0 |
0 |
T8 |
2920 |
2705 |
0 |
0 |
T9 |
5263 |
3651 |
0 |
0 |
T10 |
8247 |
8193 |
0 |
0 |
T11 |
137532 |
68436 |
0 |
0 |
T13 |
1728 |
864 |
0 |
0 |
T14 |
32 |
16 |
0 |
0 |
T15 |
92288 |
46144 |
0 |
0 |
T16 |
26440 |
0 |
0 |
0 |
T17 |
5010 |
2328 |
0 |
0 |
T18 |
68512 |
0 |
0 |
0 |
T19 |
184862 |
85888 |
0 |
0 |
T21 |
26463 |
0 |
0 |
0 |
T22 |
24964 |
0 |
0 |
0 |
T27 |
0 |
576 |
0 |
0 |
T28 |
0 |
2960 |
0 |
0 |
T29 |
0 |
55632 |
0 |
0 |
T30 |
0 |
52312 |
0 |
0 |
T31 |
0 |
2448 |
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 |
662341152 |
3275190 |
0 |
0 |
T5 |
3674 |
113 |
0 |
0 |
T6 |
3140 |
832 |
0 |
0 |
T7 |
1592 |
0 |
0 |
0 |
T8 |
2920 |
0 |
0 |
0 |
T9 |
5263 |
0 |
0 |
0 |
T10 |
8247 |
832 |
0 |
0 |
T11 |
276782 |
832 |
0 |
0 |
T12 |
1188 |
0 |
0 |
0 |
T13 |
7945 |
0 |
0 |
0 |
T14 |
3049 |
832 |
0 |
0 |
T15 |
46144 |
832 |
0 |
0 |
T16 |
13220 |
832 |
0 |
0 |
T17 |
2505 |
222 |
0 |
0 |
T18 |
34256 |
832 |
0 |
0 |
T19 |
92431 |
0 |
0 |
0 |
T21 |
26463 |
1344 |
0 |
0 |
T28 |
0 |
127 |
0 |
0 |
T30 |
0 |
2226 |
0 |
0 |
T31 |
0 |
45 |
0 |
0 |
T41 |
0 |
4400 |
0 |
0 |
T42 |
0 |
257 |
0 |
0 |
T43 |
0 |
85 |
0 |
0 |
T44 |
59986 |
259 |
0 |
0 |
T45 |
0 |
2690 |
0 |
0 |
T53 |
0 |
3750 |
0 |
0 |
T56 |
4588 |
6 |
0 |
0 |
T62 |
0 |
3666 |
0 |
0 |
T77 |
32198 |
0 |
0 |
0 |
T78 |
8160 |
0 |
0 |
0 |
T79 |
63337 |
0 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
662341152 |
3275190 |
0 |
0 |
T5 |
3674 |
113 |
0 |
0 |
T6 |
3140 |
832 |
0 |
0 |
T7 |
1592 |
0 |
0 |
0 |
T8 |
2920 |
0 |
0 |
0 |
T9 |
5263 |
0 |
0 |
0 |
T10 |
8247 |
832 |
0 |
0 |
T11 |
276782 |
832 |
0 |
0 |
T12 |
1188 |
0 |
0 |
0 |
T13 |
7945 |
0 |
0 |
0 |
T14 |
3049 |
832 |
0 |
0 |
T15 |
46144 |
832 |
0 |
0 |
T16 |
13220 |
832 |
0 |
0 |
T17 |
2505 |
222 |
0 |
0 |
T18 |
34256 |
832 |
0 |
0 |
T19 |
92431 |
0 |
0 |
0 |
T21 |
26463 |
1344 |
0 |
0 |
T28 |
0 |
127 |
0 |
0 |
T30 |
0 |
2226 |
0 |
0 |
T31 |
0 |
45 |
0 |
0 |
T41 |
0 |
4400 |
0 |
0 |
T42 |
0 |
257 |
0 |
0 |
T43 |
0 |
85 |
0 |
0 |
T44 |
59986 |
259 |
0 |
0 |
T45 |
0 |
2690 |
0 |
0 |
T53 |
0 |
3750 |
0 |
0 |
T56 |
4588 |
6 |
0 |
0 |
T62 |
0 |
3666 |
0 |
0 |
T77 |
32198 |
0 |
0 |
0 |
T78 |
8160 |
0 |
0 |
0 |
T79 |
63337 |
0 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
662341152 |
530901362 |
0 |
0 |
T1 |
966 |
911 |
0 |
0 |
T2 |
1766 |
1672 |
0 |
0 |
T3 |
1423 |
1354 |
0 |
0 |
T4 |
2878 |
2818 |
0 |
0 |
T5 |
3674 |
3577 |
0 |
0 |
T6 |
3140 |
3049 |
0 |
0 |
T7 |
1592 |
1508 |
0 |
0 |
T8 |
2920 |
2705 |
0 |
0 |
T9 |
5263 |
3651 |
0 |
0 |
T10 |
8247 |
8193 |
0 |
0 |
T11 |
137532 |
68436 |
0 |
0 |
T13 |
1728 |
864 |
0 |
0 |
T14 |
32 |
16 |
0 |
0 |
T15 |
92288 |
46144 |
0 |
0 |
T16 |
26440 |
0 |
0 |
0 |
T17 |
5010 |
2328 |
0 |
0 |
T18 |
68512 |
0 |
0 |
0 |
T19 |
184862 |
85888 |
0 |
0 |
T21 |
26463 |
0 |
0 |
0 |
T22 |
24964 |
0 |
0 |
0 |
T27 |
0 |
576 |
0 |
0 |
T28 |
0 |
2960 |
0 |
0 |
T29 |
0 |
55632 |
0 |
0 |
T30 |
0 |
52312 |
0 |
0 |
T31 |
0 |
2448 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
662341152 |
530901362 |
0 |
0 |
T1 |
966 |
911 |
0 |
0 |
T2 |
1766 |
1672 |
0 |
0 |
T3 |
1423 |
1354 |
0 |
0 |
T4 |
2878 |
2818 |
0 |
0 |
T5 |
3674 |
3577 |
0 |
0 |
T6 |
3140 |
3049 |
0 |
0 |
T7 |
1592 |
1508 |
0 |
0 |
T8 |
2920 |
2705 |
0 |
0 |
T9 |
5263 |
3651 |
0 |
0 |
T10 |
8247 |
8193 |
0 |
0 |
T11 |
137532 |
68436 |
0 |
0 |
T13 |
1728 |
864 |
0 |
0 |
T14 |
32 |
16 |
0 |
0 |
T15 |
92288 |
46144 |
0 |
0 |
T16 |
26440 |
0 |
0 |
0 |
T17 |
5010 |
2328 |
0 |
0 |
T18 |
68512 |
0 |
0 |
0 |
T19 |
184862 |
85888 |
0 |
0 |
T21 |
26463 |
0 |
0 |
0 |
T22 |
24964 |
0 |
0 |
0 |
T27 |
0 |
576 |
0 |
0 |
T28 |
0 |
2960 |
0 |
0 |
T29 |
0 |
55632 |
0 |
0 |
T30 |
0 |
52312 |
0 |
0 |
T31 |
0 |
2448 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
662341152 |
3275190 |
0 |
0 |
T5 |
3674 |
113 |
0 |
0 |
T6 |
3140 |
832 |
0 |
0 |
T7 |
1592 |
0 |
0 |
0 |
T8 |
2920 |
0 |
0 |
0 |
T9 |
5263 |
0 |
0 |
0 |
T10 |
8247 |
832 |
0 |
0 |
T11 |
276782 |
832 |
0 |
0 |
T12 |
1188 |
0 |
0 |
0 |
T13 |
7945 |
0 |
0 |
0 |
T14 |
3049 |
832 |
0 |
0 |
T15 |
46144 |
832 |
0 |
0 |
T16 |
13220 |
832 |
0 |
0 |
T17 |
2505 |
222 |
0 |
0 |
T18 |
34256 |
832 |
0 |
0 |
T19 |
92431 |
0 |
0 |
0 |
T21 |
26463 |
1344 |
0 |
0 |
T28 |
0 |
127 |
0 |
0 |
T30 |
0 |
2226 |
0 |
0 |
T31 |
0 |
45 |
0 |
0 |
T41 |
0 |
4400 |
0 |
0 |
T42 |
0 |
257 |
0 |
0 |
T43 |
0 |
85 |
0 |
0 |
T44 |
59986 |
259 |
0 |
0 |
T45 |
0 |
2690 |
0 |
0 |
T53 |
0 |
3750 |
0 |
0 |
T56 |
4588 |
6 |
0 |
0 |
T62 |
0 |
3666 |
0 |
0 |
T77 |
32198 |
0 |
0 |
0 |
T78 |
8160 |
0 |
0 |
0 |
T79 |
63337 |
0 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
662341152 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
662341152 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
662341152 |
3275190 |
0 |
0 |
T5 |
3674 |
113 |
0 |
0 |
T6 |
3140 |
832 |
0 |
0 |
T7 |
1592 |
0 |
0 |
0 |
T8 |
2920 |
0 |
0 |
0 |
T9 |
5263 |
0 |
0 |
0 |
T10 |
8247 |
832 |
0 |
0 |
T11 |
276782 |
832 |
0 |
0 |
T12 |
1188 |
0 |
0 |
0 |
T13 |
7945 |
0 |
0 |
0 |
T14 |
3049 |
832 |
0 |
0 |
T15 |
46144 |
832 |
0 |
0 |
T16 |
13220 |
832 |
0 |
0 |
T17 |
2505 |
222 |
0 |
0 |
T18 |
34256 |
832 |
0 |
0 |
T19 |
92431 |
0 |
0 |
0 |
T21 |
26463 |
1344 |
0 |
0 |
T28 |
0 |
127 |
0 |
0 |
T30 |
0 |
2226 |
0 |
0 |
T31 |
0 |
45 |
0 |
0 |
T41 |
0 |
4400 |
0 |
0 |
T42 |
0 |
257 |
0 |
0 |
T43 |
0 |
85 |
0 |
0 |
T44 |
59986 |
259 |
0 |
0 |
T45 |
0 |
2690 |
0 |
0 |
T53 |
0 |
3750 |
0 |
0 |
T56 |
4588 |
6 |
0 |
0 |
T62 |
0 |
3666 |
0 |
0 |
T77 |
32198 |
0 |
0 |
0 |
T78 |
8160 |
0 |
0 |
0 |
T79 |
63337 |
0 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
662341152 |
3275190 |
0 |
0 |
T5 |
3674 |
113 |
0 |
0 |
T6 |
3140 |
832 |
0 |
0 |
T7 |
1592 |
0 |
0 |
0 |
T8 |
2920 |
0 |
0 |
0 |
T9 |
5263 |
0 |
0 |
0 |
T10 |
8247 |
832 |
0 |
0 |
T11 |
276782 |
832 |
0 |
0 |
T12 |
1188 |
0 |
0 |
0 |
T13 |
7945 |
0 |
0 |
0 |
T14 |
3049 |
832 |
0 |
0 |
T15 |
46144 |
832 |
0 |
0 |
T16 |
13220 |
832 |
0 |
0 |
T17 |
2505 |
222 |
0 |
0 |
T18 |
34256 |
832 |
0 |
0 |
T19 |
92431 |
0 |
0 |
0 |
T21 |
26463 |
1344 |
0 |
0 |
T28 |
0 |
127 |
0 |
0 |
T30 |
0 |
2226 |
0 |
0 |
T31 |
0 |
45 |
0 |
0 |
T41 |
0 |
4400 |
0 |
0 |
T42 |
0 |
257 |
0 |
0 |
T43 |
0 |
85 |
0 |
0 |
T44 |
59986 |
259 |
0 |
0 |
T45 |
0 |
2690 |
0 |
0 |
T53 |
0 |
3750 |
0 |
0 |
T56 |
4588 |
6 |
0 |
0 |
T62 |
0 |
3666 |
0 |
0 |
T77 |
32198 |
0 |
0 |
0 |
T78 |
8160 |
0 |
0 |
0 |
T79 |
63337 |
0 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
662341152 |
3275190 |
0 |
0 |
T5 |
3674 |
113 |
0 |
0 |
T6 |
3140 |
832 |
0 |
0 |
T7 |
1592 |
0 |
0 |
0 |
T8 |
2920 |
0 |
0 |
0 |
T9 |
5263 |
0 |
0 |
0 |
T10 |
8247 |
832 |
0 |
0 |
T11 |
276782 |
832 |
0 |
0 |
T12 |
1188 |
0 |
0 |
0 |
T13 |
7945 |
0 |
0 |
0 |
T14 |
3049 |
832 |
0 |
0 |
T15 |
46144 |
832 |
0 |
0 |
T16 |
13220 |
832 |
0 |
0 |
T17 |
2505 |
222 |
0 |
0 |
T18 |
34256 |
832 |
0 |
0 |
T19 |
92431 |
0 |
0 |
0 |
T21 |
26463 |
1344 |
0 |
0 |
T28 |
0 |
127 |
0 |
0 |
T30 |
0 |
2226 |
0 |
0 |
T31 |
0 |
45 |
0 |
0 |
T41 |
0 |
4400 |
0 |
0 |
T42 |
0 |
257 |
0 |
0 |
T43 |
0 |
85 |
0 |
0 |
T44 |
59986 |
259 |
0 |
0 |
T45 |
0 |
2690 |
0 |
0 |
T53 |
0 |
3750 |
0 |
0 |
T56 |
4588 |
6 |
0 |
0 |
T62 |
0 |
3666 |
0 |
0 |
T77 |
32198 |
0 |
0 |
0 |
T78 |
8160 |
0 |
0 |
0 |
T79 |
63337 |
0 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
662341152 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
662341152 |
6 |
0 |
956 |
T38 |
607866 |
1 |
0 |
1 |
T80 |
0 |
1 |
0 |
0 |
T81 |
0 |
1 |
0 |
0 |
T82 |
0 |
1 |
0 |
0 |
T83 |
0 |
1 |
0 |
0 |
T84 |
0 |
1 |
0 |
0 |
T85 |
141367 |
0 |
0 |
1 |
T86 |
1054 |
0 |
0 |
1 |
T87 |
68488 |
0 |
0 |
1 |
T88 |
399472 |
0 |
0 |
1 |
T89 |
118807 |
0 |
0 |
1 |
T90 |
1665 |
0 |
0 |
1 |
T91 |
7593 |
0 |
0 |
1 |
T92 |
447737 |
0 |
0 |
1 |
T93 |
5720 |
0 |
0 |
1 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
662341152 |
530901362 |
0 |
0 |
T1 |
966 |
911 |
0 |
0 |
T2 |
1766 |
1672 |
0 |
0 |
T3 |
1423 |
1354 |
0 |
0 |
T4 |
2878 |
2818 |
0 |
0 |
T5 |
3674 |
3577 |
0 |
0 |
T6 |
3140 |
3049 |
0 |
0 |
T7 |
1592 |
1508 |
0 |
0 |
T8 |
2920 |
2705 |
0 |
0 |
T9 |
5263 |
3651 |
0 |
0 |
T10 |
8247 |
8193 |
0 |
0 |
T11 |
137532 |
68436 |
0 |
0 |
T13 |
1728 |
864 |
0 |
0 |
T14 |
32 |
16 |
0 |
0 |
T15 |
92288 |
46144 |
0 |
0 |
T16 |
26440 |
0 |
0 |
0 |
T17 |
5010 |
2328 |
0 |
0 |
T18 |
68512 |
0 |
0 |
0 |
T19 |
184862 |
85888 |
0 |
0 |
T21 |
26463 |
0 |
0 |
0 |
T22 |
24964 |
0 |
0 |
0 |
T27 |
0 |
576 |
0 |
0 |
T28 |
0 |
2960 |
0 |
0 |
T29 |
0 |
55632 |
0 |
0 |
T30 |
0 |
52312 |
0 |
0 |
T31 |
0 |
2448 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
662341152 |
3275190 |
0 |
0 |
T5 |
3674 |
113 |
0 |
0 |
T6 |
3140 |
832 |
0 |
0 |
T7 |
1592 |
0 |
0 |
0 |
T8 |
2920 |
0 |
0 |
0 |
T9 |
5263 |
0 |
0 |
0 |
T10 |
8247 |
832 |
0 |
0 |
T11 |
276782 |
832 |
0 |
0 |
T12 |
1188 |
0 |
0 |
0 |
T13 |
7945 |
0 |
0 |
0 |
T14 |
3049 |
832 |
0 |
0 |
T15 |
46144 |
832 |
0 |
0 |
T16 |
13220 |
832 |
0 |
0 |
T17 |
2505 |
222 |
0 |
0 |
T18 |
34256 |
832 |
0 |
0 |
T19 |
92431 |
0 |
0 |
0 |
T21 |
26463 |
1344 |
0 |
0 |
T28 |
0 |
127 |
0 |
0 |
T30 |
0 |
2226 |
0 |
0 |
T31 |
0 |
45 |
0 |
0 |
T41 |
0 |
4400 |
0 |
0 |
T42 |
0 |
257 |
0 |
0 |
T43 |
0 |
85 |
0 |
0 |
T44 |
59986 |
259 |
0 |
0 |
T45 |
0 |
2690 |
0 |
0 |
T53 |
0 |
3750 |
0 |
0 |
T56 |
4588 |
6 |
0 |
0 |
T62 |
0 |
3666 |
0 |
0 |
T77 |
32198 |
0 |
0 |
0 |
T78 |
8160 |
0 |
0 |
0 |
T79 |
63337 |
0 |
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 T13
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T5 T17 T28
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T4 T5 T13
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 T17 T28
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 T17 T28
128 end
MISSING_ELSE
Cond Coverage for Instance : tb.dut.u_spi_tpm.u_arbiter.gen_arb_ppc.u_reqarb
| 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 | T5,T17,T28 |
1 | 0 | Covered | T5,T17,T28 |
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,T13 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T5,T17,T28 |
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 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,T17,T28 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T4,T5,T13 |
126 if (winner[i]) begin
-1-
127 idx_o = i[IdxW-1:0];
==>
128 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T5,T17,T28 |
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,T17,T28 |
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 |
130162691 |
24187477 |
0 |
0 |
T4 |
144 |
144 |
0 |
0 |
T5 |
864 |
864 |
0 |
0 |
T11 |
68766 |
0 |
0 |
0 |
T13 |
864 |
864 |
0 |
0 |
T14 |
16 |
0 |
0 |
0 |
T15 |
46144 |
0 |
0 |
0 |
T16 |
13220 |
0 |
0 |
0 |
T17 |
2505 |
2328 |
0 |
0 |
T18 |
34256 |
0 |
0 |
0 |
T19 |
92431 |
85888 |
0 |
0 |
T27 |
0 |
576 |
0 |
0 |
T28 |
0 |
2960 |
0 |
0 |
T29 |
0 |
55632 |
0 |
0 |
T30 |
0 |
52312 |
0 |
0 |
T31 |
0 |
2448 |
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 |
130162691 |
557889 |
0 |
0 |
T5 |
864 |
89 |
0 |
0 |
T11 |
68766 |
0 |
0 |
0 |
T13 |
864 |
0 |
0 |
0 |
T14 |
16 |
0 |
0 |
0 |
T15 |
46144 |
0 |
0 |
0 |
T16 |
13220 |
0 |
0 |
0 |
T17 |
2505 |
164 |
0 |
0 |
T18 |
34256 |
0 |
0 |
0 |
T19 |
92431 |
0 |
0 |
0 |
T21 |
26463 |
0 |
0 |
0 |
T28 |
0 |
127 |
0 |
0 |
T30 |
0 |
2226 |
0 |
0 |
T31 |
0 |
45 |
0 |
0 |
T41 |
0 |
4400 |
0 |
0 |
T42 |
0 |
257 |
0 |
0 |
T43 |
0 |
85 |
0 |
0 |
T53 |
0 |
980 |
0 |
0 |
T62 |
0 |
3666 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
557889 |
0 |
0 |
T5 |
864 |
89 |
0 |
0 |
T11 |
68766 |
0 |
0 |
0 |
T13 |
864 |
0 |
0 |
0 |
T14 |
16 |
0 |
0 |
0 |
T15 |
46144 |
0 |
0 |
0 |
T16 |
13220 |
0 |
0 |
0 |
T17 |
2505 |
164 |
0 |
0 |
T18 |
34256 |
0 |
0 |
0 |
T19 |
92431 |
0 |
0 |
0 |
T21 |
26463 |
0 |
0 |
0 |
T28 |
0 |
127 |
0 |
0 |
T30 |
0 |
2226 |
0 |
0 |
T31 |
0 |
45 |
0 |
0 |
T41 |
0 |
4400 |
0 |
0 |
T42 |
0 |
257 |
0 |
0 |
T43 |
0 |
85 |
0 |
0 |
T53 |
0 |
980 |
0 |
0 |
T62 |
0 |
3666 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
24187477 |
0 |
0 |
T4 |
144 |
144 |
0 |
0 |
T5 |
864 |
864 |
0 |
0 |
T11 |
68766 |
0 |
0 |
0 |
T13 |
864 |
864 |
0 |
0 |
T14 |
16 |
0 |
0 |
0 |
T15 |
46144 |
0 |
0 |
0 |
T16 |
13220 |
0 |
0 |
0 |
T17 |
2505 |
2328 |
0 |
0 |
T18 |
34256 |
0 |
0 |
0 |
T19 |
92431 |
85888 |
0 |
0 |
T27 |
0 |
576 |
0 |
0 |
T28 |
0 |
2960 |
0 |
0 |
T29 |
0 |
55632 |
0 |
0 |
T30 |
0 |
52312 |
0 |
0 |
T31 |
0 |
2448 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
24187477 |
0 |
0 |
T4 |
144 |
144 |
0 |
0 |
T5 |
864 |
864 |
0 |
0 |
T11 |
68766 |
0 |
0 |
0 |
T13 |
864 |
864 |
0 |
0 |
T14 |
16 |
0 |
0 |
0 |
T15 |
46144 |
0 |
0 |
0 |
T16 |
13220 |
0 |
0 |
0 |
T17 |
2505 |
2328 |
0 |
0 |
T18 |
34256 |
0 |
0 |
0 |
T19 |
92431 |
85888 |
0 |
0 |
T27 |
0 |
576 |
0 |
0 |
T28 |
0 |
2960 |
0 |
0 |
T29 |
0 |
55632 |
0 |
0 |
T30 |
0 |
52312 |
0 |
0 |
T31 |
0 |
2448 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
557889 |
0 |
0 |
T5 |
864 |
89 |
0 |
0 |
T11 |
68766 |
0 |
0 |
0 |
T13 |
864 |
0 |
0 |
0 |
T14 |
16 |
0 |
0 |
0 |
T15 |
46144 |
0 |
0 |
0 |
T16 |
13220 |
0 |
0 |
0 |
T17 |
2505 |
164 |
0 |
0 |
T18 |
34256 |
0 |
0 |
0 |
T19 |
92431 |
0 |
0 |
0 |
T21 |
26463 |
0 |
0 |
0 |
T28 |
0 |
127 |
0 |
0 |
T30 |
0 |
2226 |
0 |
0 |
T31 |
0 |
45 |
0 |
0 |
T41 |
0 |
4400 |
0 |
0 |
T42 |
0 |
257 |
0 |
0 |
T43 |
0 |
85 |
0 |
0 |
T53 |
0 |
980 |
0 |
0 |
T62 |
0 |
3666 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
557889 |
0 |
0 |
T5 |
864 |
89 |
0 |
0 |
T11 |
68766 |
0 |
0 |
0 |
T13 |
864 |
0 |
0 |
0 |
T14 |
16 |
0 |
0 |
0 |
T15 |
46144 |
0 |
0 |
0 |
T16 |
13220 |
0 |
0 |
0 |
T17 |
2505 |
164 |
0 |
0 |
T18 |
34256 |
0 |
0 |
0 |
T19 |
92431 |
0 |
0 |
0 |
T21 |
26463 |
0 |
0 |
0 |
T28 |
0 |
127 |
0 |
0 |
T30 |
0 |
2226 |
0 |
0 |
T31 |
0 |
45 |
0 |
0 |
T41 |
0 |
4400 |
0 |
0 |
T42 |
0 |
257 |
0 |
0 |
T43 |
0 |
85 |
0 |
0 |
T53 |
0 |
980 |
0 |
0 |
T62 |
0 |
3666 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
557889 |
0 |
0 |
T5 |
864 |
89 |
0 |
0 |
T11 |
68766 |
0 |
0 |
0 |
T13 |
864 |
0 |
0 |
0 |
T14 |
16 |
0 |
0 |
0 |
T15 |
46144 |
0 |
0 |
0 |
T16 |
13220 |
0 |
0 |
0 |
T17 |
2505 |
164 |
0 |
0 |
T18 |
34256 |
0 |
0 |
0 |
T19 |
92431 |
0 |
0 |
0 |
T21 |
26463 |
0 |
0 |
0 |
T28 |
0 |
127 |
0 |
0 |
T30 |
0 |
2226 |
0 |
0 |
T31 |
0 |
45 |
0 |
0 |
T41 |
0 |
4400 |
0 |
0 |
T42 |
0 |
257 |
0 |
0 |
T43 |
0 |
85 |
0 |
0 |
T53 |
0 |
980 |
0 |
0 |
T62 |
0 |
3666 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
557889 |
0 |
0 |
T5 |
864 |
89 |
0 |
0 |
T11 |
68766 |
0 |
0 |
0 |
T13 |
864 |
0 |
0 |
0 |
T14 |
16 |
0 |
0 |
0 |
T15 |
46144 |
0 |
0 |
0 |
T16 |
13220 |
0 |
0 |
0 |
T17 |
2505 |
164 |
0 |
0 |
T18 |
34256 |
0 |
0 |
0 |
T19 |
92431 |
0 |
0 |
0 |
T21 |
26463 |
0 |
0 |
0 |
T28 |
0 |
127 |
0 |
0 |
T30 |
0 |
2226 |
0 |
0 |
T31 |
0 |
45 |
0 |
0 |
T41 |
0 |
4400 |
0 |
0 |
T42 |
0 |
257 |
0 |
0 |
T43 |
0 |
85 |
0 |
0 |
T53 |
0 |
980 |
0 |
0 |
T62 |
0 |
3666 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
0 |
0 |
0 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
24187477 |
0 |
0 |
T4 |
144 |
144 |
0 |
0 |
T5 |
864 |
864 |
0 |
0 |
T11 |
68766 |
0 |
0 |
0 |
T13 |
864 |
864 |
0 |
0 |
T14 |
16 |
0 |
0 |
0 |
T15 |
46144 |
0 |
0 |
0 |
T16 |
13220 |
0 |
0 |
0 |
T17 |
2505 |
2328 |
0 |
0 |
T18 |
34256 |
0 |
0 |
0 |
T19 |
92431 |
85888 |
0 |
0 |
T27 |
0 |
576 |
0 |
0 |
T28 |
0 |
2960 |
0 |
0 |
T29 |
0 |
55632 |
0 |
0 |
T30 |
0 |
52312 |
0 |
0 |
T31 |
0 |
2448 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
557889 |
0 |
0 |
T5 |
864 |
89 |
0 |
0 |
T11 |
68766 |
0 |
0 |
0 |
T13 |
864 |
0 |
0 |
0 |
T14 |
16 |
0 |
0 |
0 |
T15 |
46144 |
0 |
0 |
0 |
T16 |
13220 |
0 |
0 |
0 |
T17 |
2505 |
164 |
0 |
0 |
T18 |
34256 |
0 |
0 |
0 |
T19 |
92431 |
0 |
0 |
0 |
T21 |
26463 |
0 |
0 |
0 |
T28 |
0 |
127 |
0 |
0 |
T30 |
0 |
2226 |
0 |
0 |
T31 |
0 |
45 |
0 |
0 |
T41 |
0 |
4400 |
0 |
0 |
T42 |
0 |
257 |
0 |
0 |
T43 |
0 |
85 |
0 |
0 |
T53 |
0 |
980 |
0 |
0 |
T62 |
0 |
3666 |
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: T11 T14 T15
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T44 T56 T45
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T11 T14 T15
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: T44 T56 T45
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: T44 T56 T45
128 end
MISSING_ELSE
Cond Coverage for Instance : tb.dut.u_upload.u_arbiter.gen_arb_ppc.u_reqarb
| 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 | T44,T56,T45 |
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 | T44,T56,T45 |
1 | 0 | Covered | T44,T56,T45 |
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 | T11,T14,T15 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T44,T56,T45 |
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 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 |
T44,T56,T45 |
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 |
T44,T56,T45 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T11,T14,T15 |
126 if (winner[i]) begin
-1-
127 idx_o = i[IdxW-1:0];
==>
128 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T44,T56,T45 |
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 |
T44,T56,T45 |
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 |
130162691 |
104784004 |
0 |
0 |
T11 |
68766 |
68436 |
0 |
0 |
T13 |
864 |
0 |
0 |
0 |
T14 |
16 |
16 |
0 |
0 |
T15 |
46144 |
46144 |
0 |
0 |
T16 |
13220 |
13220 |
0 |
0 |
T17 |
2505 |
0 |
0 |
0 |
T18 |
34256 |
34256 |
0 |
0 |
T19 |
92431 |
0 |
0 |
0 |
T21 |
26463 |
26102 |
0 |
0 |
T22 |
24964 |
24576 |
0 |
0 |
T23 |
0 |
1176 |
0 |
0 |
T24 |
0 |
7845 |
0 |
0 |
T25 |
0 |
119882 |
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 |
130162691 |
659997 |
0 |
0 |
T36 |
0 |
47 |
0 |
0 |
T44 |
59986 |
259 |
0 |
0 |
T45 |
372640 |
2690 |
0 |
0 |
T48 |
0 |
3628 |
0 |
0 |
T52 |
27024 |
0 |
0 |
0 |
T53 |
0 |
2770 |
0 |
0 |
T56 |
4588 |
6 |
0 |
0 |
T61 |
0 |
2354 |
0 |
0 |
T62 |
151386 |
0 |
0 |
0 |
T63 |
0 |
3575 |
0 |
0 |
T77 |
32198 |
0 |
0 |
0 |
T78 |
8160 |
0 |
0 |
0 |
T79 |
63337 |
0 |
0 |
0 |
T94 |
0 |
1 |
0 |
0 |
T95 |
0 |
514 |
0 |
0 |
T96 |
1000 |
0 |
0 |
0 |
T97 |
37503 |
0 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
659997 |
0 |
0 |
T36 |
0 |
47 |
0 |
0 |
T44 |
59986 |
259 |
0 |
0 |
T45 |
372640 |
2690 |
0 |
0 |
T48 |
0 |
3628 |
0 |
0 |
T52 |
27024 |
0 |
0 |
0 |
T53 |
0 |
2770 |
0 |
0 |
T56 |
4588 |
6 |
0 |
0 |
T61 |
0 |
2354 |
0 |
0 |
T62 |
151386 |
0 |
0 |
0 |
T63 |
0 |
3575 |
0 |
0 |
T77 |
32198 |
0 |
0 |
0 |
T78 |
8160 |
0 |
0 |
0 |
T79 |
63337 |
0 |
0 |
0 |
T94 |
0 |
1 |
0 |
0 |
T95 |
0 |
514 |
0 |
0 |
T96 |
1000 |
0 |
0 |
0 |
T97 |
37503 |
0 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
104784004 |
0 |
0 |
T11 |
68766 |
68436 |
0 |
0 |
T13 |
864 |
0 |
0 |
0 |
T14 |
16 |
16 |
0 |
0 |
T15 |
46144 |
46144 |
0 |
0 |
T16 |
13220 |
13220 |
0 |
0 |
T17 |
2505 |
0 |
0 |
0 |
T18 |
34256 |
34256 |
0 |
0 |
T19 |
92431 |
0 |
0 |
0 |
T21 |
26463 |
26102 |
0 |
0 |
T22 |
24964 |
24576 |
0 |
0 |
T23 |
0 |
1176 |
0 |
0 |
T24 |
0 |
7845 |
0 |
0 |
T25 |
0 |
119882 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
104784004 |
0 |
0 |
T11 |
68766 |
68436 |
0 |
0 |
T13 |
864 |
0 |
0 |
0 |
T14 |
16 |
16 |
0 |
0 |
T15 |
46144 |
46144 |
0 |
0 |
T16 |
13220 |
13220 |
0 |
0 |
T17 |
2505 |
0 |
0 |
0 |
T18 |
34256 |
34256 |
0 |
0 |
T19 |
92431 |
0 |
0 |
0 |
T21 |
26463 |
26102 |
0 |
0 |
T22 |
24964 |
24576 |
0 |
0 |
T23 |
0 |
1176 |
0 |
0 |
T24 |
0 |
7845 |
0 |
0 |
T25 |
0 |
119882 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
659997 |
0 |
0 |
T36 |
0 |
47 |
0 |
0 |
T44 |
59986 |
259 |
0 |
0 |
T45 |
372640 |
2690 |
0 |
0 |
T48 |
0 |
3628 |
0 |
0 |
T52 |
27024 |
0 |
0 |
0 |
T53 |
0 |
2770 |
0 |
0 |
T56 |
4588 |
6 |
0 |
0 |
T61 |
0 |
2354 |
0 |
0 |
T62 |
151386 |
0 |
0 |
0 |
T63 |
0 |
3575 |
0 |
0 |
T77 |
32198 |
0 |
0 |
0 |
T78 |
8160 |
0 |
0 |
0 |
T79 |
63337 |
0 |
0 |
0 |
T94 |
0 |
1 |
0 |
0 |
T95 |
0 |
514 |
0 |
0 |
T96 |
1000 |
0 |
0 |
0 |
T97 |
37503 |
0 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
659997 |
0 |
0 |
T36 |
0 |
47 |
0 |
0 |
T44 |
59986 |
259 |
0 |
0 |
T45 |
372640 |
2690 |
0 |
0 |
T48 |
0 |
3628 |
0 |
0 |
T52 |
27024 |
0 |
0 |
0 |
T53 |
0 |
2770 |
0 |
0 |
T56 |
4588 |
6 |
0 |
0 |
T61 |
0 |
2354 |
0 |
0 |
T62 |
151386 |
0 |
0 |
0 |
T63 |
0 |
3575 |
0 |
0 |
T77 |
32198 |
0 |
0 |
0 |
T78 |
8160 |
0 |
0 |
0 |
T79 |
63337 |
0 |
0 |
0 |
T94 |
0 |
1 |
0 |
0 |
T95 |
0 |
514 |
0 |
0 |
T96 |
1000 |
0 |
0 |
0 |
T97 |
37503 |
0 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
659997 |
0 |
0 |
T36 |
0 |
47 |
0 |
0 |
T44 |
59986 |
259 |
0 |
0 |
T45 |
372640 |
2690 |
0 |
0 |
T48 |
0 |
3628 |
0 |
0 |
T52 |
27024 |
0 |
0 |
0 |
T53 |
0 |
2770 |
0 |
0 |
T56 |
4588 |
6 |
0 |
0 |
T61 |
0 |
2354 |
0 |
0 |
T62 |
151386 |
0 |
0 |
0 |
T63 |
0 |
3575 |
0 |
0 |
T77 |
32198 |
0 |
0 |
0 |
T78 |
8160 |
0 |
0 |
0 |
T79 |
63337 |
0 |
0 |
0 |
T94 |
0 |
1 |
0 |
0 |
T95 |
0 |
514 |
0 |
0 |
T96 |
1000 |
0 |
0 |
0 |
T97 |
37503 |
0 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
659997 |
0 |
0 |
T36 |
0 |
47 |
0 |
0 |
T44 |
59986 |
259 |
0 |
0 |
T45 |
372640 |
2690 |
0 |
0 |
T48 |
0 |
3628 |
0 |
0 |
T52 |
27024 |
0 |
0 |
0 |
T53 |
0 |
2770 |
0 |
0 |
T56 |
4588 |
6 |
0 |
0 |
T61 |
0 |
2354 |
0 |
0 |
T62 |
151386 |
0 |
0 |
0 |
T63 |
0 |
3575 |
0 |
0 |
T77 |
32198 |
0 |
0 |
0 |
T78 |
8160 |
0 |
0 |
0 |
T79 |
63337 |
0 |
0 |
0 |
T94 |
0 |
1 |
0 |
0 |
T95 |
0 |
514 |
0 |
0 |
T96 |
1000 |
0 |
0 |
0 |
T97 |
37503 |
0 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
0 |
0 |
0 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
104784004 |
0 |
0 |
T11 |
68766 |
68436 |
0 |
0 |
T13 |
864 |
0 |
0 |
0 |
T14 |
16 |
16 |
0 |
0 |
T15 |
46144 |
46144 |
0 |
0 |
T16 |
13220 |
13220 |
0 |
0 |
T17 |
2505 |
0 |
0 |
0 |
T18 |
34256 |
34256 |
0 |
0 |
T19 |
92431 |
0 |
0 |
0 |
T21 |
26463 |
26102 |
0 |
0 |
T22 |
24964 |
24576 |
0 |
0 |
T23 |
0 |
1176 |
0 |
0 |
T24 |
0 |
7845 |
0 |
0 |
T25 |
0 |
119882 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
130162691 |
659997 |
0 |
0 |
T36 |
0 |
47 |
0 |
0 |
T44 |
59986 |
259 |
0 |
0 |
T45 |
372640 |
2690 |
0 |
0 |
T48 |
0 |
3628 |
0 |
0 |
T52 |
27024 |
0 |
0 |
0 |
T53 |
0 |
2770 |
0 |
0 |
T56 |
4588 |
6 |
0 |
0 |
T61 |
0 |
2354 |
0 |
0 |
T62 |
151386 |
0 |
0 |
0 |
T63 |
0 |
3575 |
0 |
0 |
T77 |
32198 |
0 |
0 |
0 |
T78 |
8160 |
0 |
0 |
0 |
T79 |
63337 |
0 |
0 |
0 |
T94 |
0 |
1 |
0 |
0 |
T95 |
0 |
514 |
0 |
0 |
T96 |
1000 |
0 |
0 |
0 |
T97 |
37503 |
0 |
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: T5 T6 T10
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: T5 T6 T10
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 T10
128 end
MISSING_ELSE
Cond Coverage for Instance : tb.dut.u_sys_sram_arbiter.gen_arb_ppc.u_reqarb
| 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 | T5,T17,T28 |
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 | T5,T17,T28 |
1 | 0 | Covered | T5,T6,T10 |
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 | T5,T6,T10 |
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 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 |
T5,T17,T28 |
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,T10 |
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 |
T5,T6,T10 |
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,T10 |
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 |
402015770 |
401929881 |
0 |
0 |
T1 |
966 |
911 |
0 |
0 |
T2 |
1766 |
1672 |
0 |
0 |
T3 |
1423 |
1354 |
0 |
0 |
T4 |
2734 |
2674 |
0 |
0 |
T5 |
2810 |
2713 |
0 |
0 |
T6 |
3140 |
3049 |
0 |
0 |
T7 |
1592 |
1508 |
0 |
0 |
T8 |
2920 |
2705 |
0 |
0 |
T9 |
5263 |
3651 |
0 |
0 |
T10 |
8247 |
8193 |
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 |
402015770 |
2057304 |
0 |
0 |
T5 |
2810 |
24 |
0 |
0 |
T6 |
3140 |
832 |
0 |
0 |
T7 |
1592 |
0 |
0 |
0 |
T8 |
2920 |
0 |
0 |
0 |
T9 |
5263 |
0 |
0 |
0 |
T10 |
8247 |
832 |
0 |
0 |
T11 |
208016 |
832 |
0 |
0 |
T12 |
1188 |
0 |
0 |
0 |
T13 |
7081 |
0 |
0 |
0 |
T14 |
3033 |
832 |
0 |
0 |
T15 |
0 |
832 |
0 |
0 |
T16 |
0 |
832 |
0 |
0 |
T17 |
0 |
58 |
0 |
0 |
T18 |
0 |
832 |
0 |
0 |
T21 |
0 |
1344 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
402015770 |
2057304 |
0 |
0 |
T5 |
2810 |
24 |
0 |
0 |
T6 |
3140 |
832 |
0 |
0 |
T7 |
1592 |
0 |
0 |
0 |
T8 |
2920 |
0 |
0 |
0 |
T9 |
5263 |
0 |
0 |
0 |
T10 |
8247 |
832 |
0 |
0 |
T11 |
208016 |
832 |
0 |
0 |
T12 |
1188 |
0 |
0 |
0 |
T13 |
7081 |
0 |
0 |
0 |
T14 |
3033 |
832 |
0 |
0 |
T15 |
0 |
832 |
0 |
0 |
T16 |
0 |
832 |
0 |
0 |
T17 |
0 |
58 |
0 |
0 |
T18 |
0 |
832 |
0 |
0 |
T21 |
0 |
1344 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
402015770 |
401929881 |
0 |
0 |
T1 |
966 |
911 |
0 |
0 |
T2 |
1766 |
1672 |
0 |
0 |
T3 |
1423 |
1354 |
0 |
0 |
T4 |
2734 |
2674 |
0 |
0 |
T5 |
2810 |
2713 |
0 |
0 |
T6 |
3140 |
3049 |
0 |
0 |
T7 |
1592 |
1508 |
0 |
0 |
T8 |
2920 |
2705 |
0 |
0 |
T9 |
5263 |
3651 |
0 |
0 |
T10 |
8247 |
8193 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
402015770 |
401929881 |
0 |
0 |
T1 |
966 |
911 |
0 |
0 |
T2 |
1766 |
1672 |
0 |
0 |
T3 |
1423 |
1354 |
0 |
0 |
T4 |
2734 |
2674 |
0 |
0 |
T5 |
2810 |
2713 |
0 |
0 |
T6 |
3140 |
3049 |
0 |
0 |
T7 |
1592 |
1508 |
0 |
0 |
T8 |
2920 |
2705 |
0 |
0 |
T9 |
5263 |
3651 |
0 |
0 |
T10 |
8247 |
8193 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
402015770 |
2057304 |
0 |
0 |
T5 |
2810 |
24 |
0 |
0 |
T6 |
3140 |
832 |
0 |
0 |
T7 |
1592 |
0 |
0 |
0 |
T8 |
2920 |
0 |
0 |
0 |
T9 |
5263 |
0 |
0 |
0 |
T10 |
8247 |
832 |
0 |
0 |
T11 |
208016 |
832 |
0 |
0 |
T12 |
1188 |
0 |
0 |
0 |
T13 |
7081 |
0 |
0 |
0 |
T14 |
3033 |
832 |
0 |
0 |
T15 |
0 |
832 |
0 |
0 |
T16 |
0 |
832 |
0 |
0 |
T17 |
0 |
58 |
0 |
0 |
T18 |
0 |
832 |
0 |
0 |
T21 |
0 |
1344 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
402015770 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
402015770 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
402015770 |
2057304 |
0 |
0 |
T5 |
2810 |
24 |
0 |
0 |
T6 |
3140 |
832 |
0 |
0 |
T7 |
1592 |
0 |
0 |
0 |
T8 |
2920 |
0 |
0 |
0 |
T9 |
5263 |
0 |
0 |
0 |
T10 |
8247 |
832 |
0 |
0 |
T11 |
208016 |
832 |
0 |
0 |
T12 |
1188 |
0 |
0 |
0 |
T13 |
7081 |
0 |
0 |
0 |
T14 |
3033 |
832 |
0 |
0 |
T15 |
0 |
832 |
0 |
0 |
T16 |
0 |
832 |
0 |
0 |
T17 |
0 |
58 |
0 |
0 |
T18 |
0 |
832 |
0 |
0 |
T21 |
0 |
1344 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
402015770 |
2057304 |
0 |
0 |
T5 |
2810 |
24 |
0 |
0 |
T6 |
3140 |
832 |
0 |
0 |
T7 |
1592 |
0 |
0 |
0 |
T8 |
2920 |
0 |
0 |
0 |
T9 |
5263 |
0 |
0 |
0 |
T10 |
8247 |
832 |
0 |
0 |
T11 |
208016 |
832 |
0 |
0 |
T12 |
1188 |
0 |
0 |
0 |
T13 |
7081 |
0 |
0 |
0 |
T14 |
3033 |
832 |
0 |
0 |
T15 |
0 |
832 |
0 |
0 |
T16 |
0 |
832 |
0 |
0 |
T17 |
0 |
58 |
0 |
0 |
T18 |
0 |
832 |
0 |
0 |
T21 |
0 |
1344 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
402015770 |
2057304 |
0 |
0 |
T5 |
2810 |
24 |
0 |
0 |
T6 |
3140 |
832 |
0 |
0 |
T7 |
1592 |
0 |
0 |
0 |
T8 |
2920 |
0 |
0 |
0 |
T9 |
5263 |
0 |
0 |
0 |
T10 |
8247 |
832 |
0 |
0 |
T11 |
208016 |
832 |
0 |
0 |
T12 |
1188 |
0 |
0 |
0 |
T13 |
7081 |
0 |
0 |
0 |
T14 |
3033 |
832 |
0 |
0 |
T15 |
0 |
832 |
0 |
0 |
T16 |
0 |
832 |
0 |
0 |
T17 |
0 |
58 |
0 |
0 |
T18 |
0 |
832 |
0 |
0 |
T21 |
0 |
1344 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
402015770 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
402015770 |
6 |
0 |
956 |
T38 |
607866 |
1 |
0 |
1 |
T80 |
0 |
1 |
0 |
0 |
T81 |
0 |
1 |
0 |
0 |
T82 |
0 |
1 |
0 |
0 |
T83 |
0 |
1 |
0 |
0 |
T84 |
0 |
1 |
0 |
0 |
T85 |
141367 |
0 |
0 |
1 |
T86 |
1054 |
0 |
0 |
1 |
T87 |
68488 |
0 |
0 |
1 |
T88 |
399472 |
0 |
0 |
1 |
T89 |
118807 |
0 |
0 |
1 |
T90 |
1665 |
0 |
0 |
1 |
T91 |
7593 |
0 |
0 |
1 |
T92 |
447737 |
0 |
0 |
1 |
T93 |
5720 |
0 |
0 |
1 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
402015770 |
401929881 |
0 |
0 |
T1 |
966 |
911 |
0 |
0 |
T2 |
1766 |
1672 |
0 |
0 |
T3 |
1423 |
1354 |
0 |
0 |
T4 |
2734 |
2674 |
0 |
0 |
T5 |
2810 |
2713 |
0 |
0 |
T6 |
3140 |
3049 |
0 |
0 |
T7 |
1592 |
1508 |
0 |
0 |
T8 |
2920 |
2705 |
0 |
0 |
T9 |
5263 |
3651 |
0 |
0 |
T10 |
8247 |
8193 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
402015770 |
2057304 |
0 |
0 |
T5 |
2810 |
24 |
0 |
0 |
T6 |
3140 |
832 |
0 |
0 |
T7 |
1592 |
0 |
0 |
0 |
T8 |
2920 |
0 |
0 |
0 |
T9 |
5263 |
0 |
0 |
0 |
T10 |
8247 |
832 |
0 |
0 |
T11 |
208016 |
832 |
0 |
0 |
T12 |
1188 |
0 |
0 |
0 |
T13 |
7081 |
0 |
0 |
0 |
T14 |
3033 |
832 |
0 |
0 |
T15 |
0 |
832 |
0 |
0 |
T16 |
0 |
832 |
0 |
0 |
T17 |
0 |
58 |
0 |
0 |
T18 |
0 |
832 |
0 |
0 |
T21 |
0 |
1344 |
0 |
0 |