Line Coverage for Module :
prim_arbiter_ppc ( parameter N=3,DW=75,EnDataPort=1,IdxW=2 + N=5,DW=75,EnDataPort=1,IdxW=3 )
Line Coverage for Module self-instances :
| Line No. | Total | Covered | Percent |
TOTAL | | 22 | 22 | 100.00 |
CONT_ASSIGN | 55 | 0 | 0 | |
CONT_ASSIGN | 75 | 1 | 1 | 100.00 |
CONT_ASSIGN | 76 | 1 | 1 | 100.00 |
ALWAYS | 82 | 3 | 3 | 100.00 |
CONT_ASSIGN | 89 | 1 | 1 | 100.00 |
CONT_ASSIGN | 90 | 1 | 1 | 100.00 |
CONT_ASSIGN | 92 | 1 | 1 | 100.00 |
CONT_ASSIGN | 94 | 1 | 1 | 100.00 |
ALWAYS | 96 | 5 | 5 | 100.00 |
ALWAYS | 109 | 4 | 4 | 100.00 |
ALWAYS | 124 | 4 | 4 | 100.00 |
54 logic unused_req_chk;
55 unreachable assign unused_req_chk = req_chk_i;
56
57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0)
58
59 // this case is basically just a bypass
60 if (N == 1) begin : gen_degenerate_case
61
62 assign valid_o = req_i[0];
63 assign data_o = data_i[0];
64 assign gnt_o[0] = valid_o & ready_i;
65 assign idx_o = '0;
66
67 end else begin : gen_normal_case
68
69 logic [N-1:0] masked_req;
70 logic [N-1:0] ppc_out;
71 logic [N-1:0] arb_req;
72 logic [N-1:0] mask, mask_next;
73 logic [N-1:0] winner;
74
75 1/1 assign masked_req = mask & req_i;
Tests: T1 T2 T3
76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i;
Tests: T1 T2 T3
77
78 // PPC
79 // Even below code looks O(n) but DC optimizes it to O(log(N))
80 // Using Parallel Prefix Computation
81 always_comb begin
82 1/1 ppc_out[0] = arb_req[0];
Tests: T1 T2 T3
83 1/1 for (int i = 1 ; i < N ; i++) begin
Tests: T1 T2 T3
84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i];
Tests: T1 T2 T3
85 end
86 end
87
88 // Grant Generation: Leading-One detector
89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
90 1/1 assign gnt_o = (ready_i) ? winner : '0;
Tests: T1 T2 T3
91
92 1/1 assign valid_o = |req_i;
Tests: T1 T2 T3
93 // Mask Generation
94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
95 always_ff @(posedge clk_i or negedge rst_ni) begin
96 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
97 1/1 mask <= '0;
Tests: T1 T2 T3
98 1/1 end else if (valid_o && ready_i) begin
Tests: T1 T2 T3
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T3 T6 T9
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T1 T2 T3
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 unreachable mask <= ppc_out;
104 end
MISSING_ELSE
105 end
106
107 if (EnDataPort == 1) begin: gen_datapath
108 always_comb begin
109 1/1 data_o = '0;
Tests: T1 T2 T3
110 1/1 for (int i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
111 1/1 if (winner[i]) begin
Tests: T1 T2 T3
112 1/1 data_o = data_i[i];
Tests: T3 T6 T9
113 end
MISSING_ELSE
114 end
115 end
116 end else begin: gen_nodatapath
117 assign data_o = '1;
118 // The following signal is used to avoid possible lint errors.
119 logic [DW-1:0] unused_data [N];
120 assign unused_data = data_i;
121 end
122
123 always_comb begin
124 1/1 idx_o = '0;
Tests: T1 T2 T3
125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
126 1/1 if (winner[i]) begin
Tests: T1 T2 T3
127 1/1 idx_o = i[IdxW-1:0];
Tests: T3 T6 T9
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: T5 T6 T7
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T6 T9 T29
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T5 T6 T7
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 T9 T29
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 T9 T29
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,T9,T29 |
1 | 0 | Covered | T6,T9,T29 |
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 | T5,T6,T7 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T6,T9,T29 |
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 | T23,T49,T55 |
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 | T23,T49,T55 |
1 | 0 | Covered | T15,T23,T57 |
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,T13,T15 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T15,T23,T57 |
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,T9,T15 |
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,T9,T15 |
1 | 0 | Covered | T3,T6,T9 |
LINE 90
EXPRESSION (ready_i ? gen_normal_case.winner : '0)
---1---
-1- | Status | Tests |
0 | Unreachable | |
1 | Covered | T1,T2,T3 |
LINE 98
EXPRESSION (valid_o && ready_i)
---1--- ---2---
-1- | -2- | Status | Tests |
0 | 1 | Covered | T1,T2,T3 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T3,T6,T9 |
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,T9,T15 |
0 |
Covered |
T1,T2,T3 |
90 assign gnt_o = (ready_i) ? winner : '0;
-1-
==>
==> (Unreachable)
Branches:
-1- | Status | Tests |
1 |
Covered |
T1,T2,T3 |
0 |
Unreachable |
|
96 if (!rst_ni) begin
-1-
97 mask <= '0;
==>
98 end else if (valid_o && ready_i) begin
-2-
99 // Latch only when requests accepted
100 mask <= mask_next;
==>
101 end else if (valid_o && !ready_i) begin
-3-
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 mask <= ppc_out;
==> (Unreachable)
104 end
MISSING_ELSE
==>
Branches:
-1- | -2- | -3- | Status | Tests |
1 |
- |
- |
Covered |
T1,T2,T3 |
0 |
1 |
- |
Covered |
T3,T6,T9 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T1,T3,T5 |
126 if (winner[i]) begin
-1-
127 idx_o = i[IdxW-1:0];
==>
128 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T3,T6,T9 |
0 |
Covered |
T1,T2,T3 |
111 if (winner[i]) begin
-1-
112 data_o = data_i[i];
==>
113 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T3,T6,T9 |
0 |
Covered |
T1,T2,T3 |
Assert Coverage for Module :
prim_arbiter_ppc
Assertion Details
CheckHotOne_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
788646768 |
637074864 |
0 |
0 |
T1 |
1752 |
1661 |
0 |
0 |
T2 |
1653 |
1564 |
0 |
0 |
T3 |
521047 |
520918 |
0 |
0 |
T4 |
999 |
939 |
0 |
0 |
T5 |
5436 |
4377 |
0 |
0 |
T6 |
358449 |
296807 |
0 |
0 |
T7 |
74474 |
50751 |
0 |
0 |
T8 |
1281 |
1215 |
0 |
0 |
T9 |
456777 |
360839 |
0 |
0 |
T10 |
917 |
832 |
0 |
0 |
T13 |
8416 |
4208 |
0 |
0 |
T14 |
1728 |
864 |
0 |
0 |
T15 |
26264 |
12962 |
0 |
0 |
T16 |
41640 |
20820 |
0 |
0 |
T17 |
8352 |
4176 |
0 |
0 |
T18 |
0 |
15032 |
0 |
0 |
T26 |
52526 |
50088 |
0 |
0 |
T28 |
0 |
1008 |
0 |
0 |
T29 |
0 |
2312 |
0 |
0 |
T30 |
0 |
107360 |
0 |
0 |
T31 |
0 |
144 |
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 |
788646768 |
3780474 |
0 |
0 |
T3 |
463556 |
832 |
0 |
0 |
T4 |
999 |
0 |
0 |
0 |
T5 |
3420 |
0 |
0 |
0 |
T6 |
298837 |
3451 |
0 |
0 |
T7 |
52415 |
0 |
0 |
0 |
T8 |
1281 |
0 |
0 |
0 |
T9 |
364894 |
5427 |
0 |
0 |
T10 |
917 |
0 |
0 |
0 |
T11 |
1162 |
0 |
0 |
0 |
T12 |
7532 |
0 |
0 |
0 |
T13 |
4208 |
832 |
0 |
0 |
T14 |
864 |
0 |
0 |
0 |
T15 |
26264 |
836 |
0 |
0 |
T16 |
41640 |
832 |
0 |
0 |
T17 |
8352 |
832 |
0 |
0 |
T18 |
30268 |
1856 |
0 |
0 |
T19 |
15976 |
832 |
0 |
0 |
T20 |
5084 |
832 |
0 |
0 |
T22 |
21566 |
0 |
0 |
0 |
T23 |
204670 |
2010 |
0 |
0 |
T26 |
105052 |
0 |
0 |
0 |
T29 |
0 |
107 |
0 |
0 |
T44 |
0 |
67 |
0 |
0 |
T45 |
0 |
180 |
0 |
0 |
T46 |
0 |
3561 |
0 |
0 |
T47 |
0 |
4266 |
0 |
0 |
T48 |
0 |
4832 |
0 |
0 |
T49 |
0 |
3970 |
0 |
0 |
T57 |
0 |
2 |
0 |
0 |
T82 |
0 |
176 |
0 |
0 |
T83 |
0 |
456 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
788646768 |
3780474 |
0 |
0 |
T3 |
463556 |
832 |
0 |
0 |
T4 |
999 |
0 |
0 |
0 |
T5 |
3420 |
0 |
0 |
0 |
T6 |
298837 |
3451 |
0 |
0 |
T7 |
52415 |
0 |
0 |
0 |
T8 |
1281 |
0 |
0 |
0 |
T9 |
364894 |
5427 |
0 |
0 |
T10 |
917 |
0 |
0 |
0 |
T11 |
1162 |
0 |
0 |
0 |
T12 |
7532 |
0 |
0 |
0 |
T13 |
4208 |
832 |
0 |
0 |
T14 |
864 |
0 |
0 |
0 |
T15 |
26264 |
836 |
0 |
0 |
T16 |
41640 |
832 |
0 |
0 |
T17 |
8352 |
832 |
0 |
0 |
T18 |
30268 |
1856 |
0 |
0 |
T19 |
15976 |
832 |
0 |
0 |
T20 |
5084 |
832 |
0 |
0 |
T22 |
21566 |
0 |
0 |
0 |
T23 |
204670 |
2010 |
0 |
0 |
T26 |
105052 |
0 |
0 |
0 |
T29 |
0 |
107 |
0 |
0 |
T44 |
0 |
67 |
0 |
0 |
T45 |
0 |
180 |
0 |
0 |
T46 |
0 |
3561 |
0 |
0 |
T47 |
0 |
4266 |
0 |
0 |
T48 |
0 |
4832 |
0 |
0 |
T49 |
0 |
3970 |
0 |
0 |
T57 |
0 |
2 |
0 |
0 |
T82 |
0 |
176 |
0 |
0 |
T83 |
0 |
456 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
788646768 |
637074864 |
0 |
0 |
T1 |
1752 |
1661 |
0 |
0 |
T2 |
1653 |
1564 |
0 |
0 |
T3 |
521047 |
520918 |
0 |
0 |
T4 |
999 |
939 |
0 |
0 |
T5 |
5436 |
4377 |
0 |
0 |
T6 |
358449 |
296807 |
0 |
0 |
T7 |
74474 |
50751 |
0 |
0 |
T8 |
1281 |
1215 |
0 |
0 |
T9 |
456777 |
360839 |
0 |
0 |
T10 |
917 |
832 |
0 |
0 |
T13 |
8416 |
4208 |
0 |
0 |
T14 |
1728 |
864 |
0 |
0 |
T15 |
26264 |
12962 |
0 |
0 |
T16 |
41640 |
20820 |
0 |
0 |
T17 |
8352 |
4176 |
0 |
0 |
T18 |
0 |
15032 |
0 |
0 |
T26 |
52526 |
50088 |
0 |
0 |
T28 |
0 |
1008 |
0 |
0 |
T29 |
0 |
2312 |
0 |
0 |
T30 |
0 |
107360 |
0 |
0 |
T31 |
0 |
144 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
788646768 |
637074864 |
0 |
0 |
T1 |
1752 |
1661 |
0 |
0 |
T2 |
1653 |
1564 |
0 |
0 |
T3 |
521047 |
520918 |
0 |
0 |
T4 |
999 |
939 |
0 |
0 |
T5 |
5436 |
4377 |
0 |
0 |
T6 |
358449 |
296807 |
0 |
0 |
T7 |
74474 |
50751 |
0 |
0 |
T8 |
1281 |
1215 |
0 |
0 |
T9 |
456777 |
360839 |
0 |
0 |
T10 |
917 |
832 |
0 |
0 |
T13 |
8416 |
4208 |
0 |
0 |
T14 |
1728 |
864 |
0 |
0 |
T15 |
26264 |
12962 |
0 |
0 |
T16 |
41640 |
20820 |
0 |
0 |
T17 |
8352 |
4176 |
0 |
0 |
T18 |
0 |
15032 |
0 |
0 |
T26 |
52526 |
50088 |
0 |
0 |
T28 |
0 |
1008 |
0 |
0 |
T29 |
0 |
2312 |
0 |
0 |
T30 |
0 |
107360 |
0 |
0 |
T31 |
0 |
144 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
788646768 |
3780474 |
0 |
0 |
T3 |
463556 |
832 |
0 |
0 |
T4 |
999 |
0 |
0 |
0 |
T5 |
3420 |
0 |
0 |
0 |
T6 |
298837 |
3451 |
0 |
0 |
T7 |
52415 |
0 |
0 |
0 |
T8 |
1281 |
0 |
0 |
0 |
T9 |
364894 |
5427 |
0 |
0 |
T10 |
917 |
0 |
0 |
0 |
T11 |
1162 |
0 |
0 |
0 |
T12 |
7532 |
0 |
0 |
0 |
T13 |
4208 |
832 |
0 |
0 |
T14 |
864 |
0 |
0 |
0 |
T15 |
26264 |
836 |
0 |
0 |
T16 |
41640 |
832 |
0 |
0 |
T17 |
8352 |
832 |
0 |
0 |
T18 |
30268 |
1856 |
0 |
0 |
T19 |
15976 |
832 |
0 |
0 |
T20 |
5084 |
832 |
0 |
0 |
T22 |
21566 |
0 |
0 |
0 |
T23 |
204670 |
2010 |
0 |
0 |
T26 |
105052 |
0 |
0 |
0 |
T29 |
0 |
107 |
0 |
0 |
T44 |
0 |
67 |
0 |
0 |
T45 |
0 |
180 |
0 |
0 |
T46 |
0 |
3561 |
0 |
0 |
T47 |
0 |
4266 |
0 |
0 |
T48 |
0 |
4832 |
0 |
0 |
T49 |
0 |
3970 |
0 |
0 |
T57 |
0 |
2 |
0 |
0 |
T82 |
0 |
176 |
0 |
0 |
T83 |
0 |
456 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
788646768 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
788646768 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
788646768 |
3780474 |
0 |
0 |
T3 |
463556 |
832 |
0 |
0 |
T4 |
999 |
0 |
0 |
0 |
T5 |
3420 |
0 |
0 |
0 |
T6 |
298837 |
3451 |
0 |
0 |
T7 |
52415 |
0 |
0 |
0 |
T8 |
1281 |
0 |
0 |
0 |
T9 |
364894 |
5427 |
0 |
0 |
T10 |
917 |
0 |
0 |
0 |
T11 |
1162 |
0 |
0 |
0 |
T12 |
7532 |
0 |
0 |
0 |
T13 |
4208 |
832 |
0 |
0 |
T14 |
864 |
0 |
0 |
0 |
T15 |
26264 |
836 |
0 |
0 |
T16 |
41640 |
832 |
0 |
0 |
T17 |
8352 |
832 |
0 |
0 |
T18 |
30268 |
1856 |
0 |
0 |
T19 |
15976 |
832 |
0 |
0 |
T20 |
5084 |
832 |
0 |
0 |
T22 |
21566 |
0 |
0 |
0 |
T23 |
204670 |
2010 |
0 |
0 |
T26 |
105052 |
0 |
0 |
0 |
T29 |
0 |
107 |
0 |
0 |
T44 |
0 |
67 |
0 |
0 |
T45 |
0 |
180 |
0 |
0 |
T46 |
0 |
3561 |
0 |
0 |
T47 |
0 |
4266 |
0 |
0 |
T48 |
0 |
4832 |
0 |
0 |
T49 |
0 |
3970 |
0 |
0 |
T57 |
0 |
2 |
0 |
0 |
T82 |
0 |
176 |
0 |
0 |
T83 |
0 |
456 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
788646768 |
3780474 |
0 |
0 |
T3 |
463556 |
832 |
0 |
0 |
T4 |
999 |
0 |
0 |
0 |
T5 |
3420 |
0 |
0 |
0 |
T6 |
298837 |
3451 |
0 |
0 |
T7 |
52415 |
0 |
0 |
0 |
T8 |
1281 |
0 |
0 |
0 |
T9 |
364894 |
5427 |
0 |
0 |
T10 |
917 |
0 |
0 |
0 |
T11 |
1162 |
0 |
0 |
0 |
T12 |
7532 |
0 |
0 |
0 |
T13 |
4208 |
832 |
0 |
0 |
T14 |
864 |
0 |
0 |
0 |
T15 |
26264 |
836 |
0 |
0 |
T16 |
41640 |
832 |
0 |
0 |
T17 |
8352 |
832 |
0 |
0 |
T18 |
30268 |
1856 |
0 |
0 |
T19 |
15976 |
832 |
0 |
0 |
T20 |
5084 |
832 |
0 |
0 |
T22 |
21566 |
0 |
0 |
0 |
T23 |
204670 |
2010 |
0 |
0 |
T26 |
105052 |
0 |
0 |
0 |
T29 |
0 |
107 |
0 |
0 |
T44 |
0 |
67 |
0 |
0 |
T45 |
0 |
180 |
0 |
0 |
T46 |
0 |
3561 |
0 |
0 |
T47 |
0 |
4266 |
0 |
0 |
T48 |
0 |
4832 |
0 |
0 |
T49 |
0 |
3970 |
0 |
0 |
T57 |
0 |
2 |
0 |
0 |
T82 |
0 |
176 |
0 |
0 |
T83 |
0 |
456 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
788646768 |
3780474 |
0 |
0 |
T3 |
463556 |
832 |
0 |
0 |
T4 |
999 |
0 |
0 |
0 |
T5 |
3420 |
0 |
0 |
0 |
T6 |
298837 |
3451 |
0 |
0 |
T7 |
52415 |
0 |
0 |
0 |
T8 |
1281 |
0 |
0 |
0 |
T9 |
364894 |
5427 |
0 |
0 |
T10 |
917 |
0 |
0 |
0 |
T11 |
1162 |
0 |
0 |
0 |
T12 |
7532 |
0 |
0 |
0 |
T13 |
4208 |
832 |
0 |
0 |
T14 |
864 |
0 |
0 |
0 |
T15 |
26264 |
836 |
0 |
0 |
T16 |
41640 |
832 |
0 |
0 |
T17 |
8352 |
832 |
0 |
0 |
T18 |
30268 |
1856 |
0 |
0 |
T19 |
15976 |
832 |
0 |
0 |
T20 |
5084 |
832 |
0 |
0 |
T22 |
21566 |
0 |
0 |
0 |
T23 |
204670 |
2010 |
0 |
0 |
T26 |
105052 |
0 |
0 |
0 |
T29 |
0 |
107 |
0 |
0 |
T44 |
0 |
67 |
0 |
0 |
T45 |
0 |
180 |
0 |
0 |
T46 |
0 |
3561 |
0 |
0 |
T47 |
0 |
4266 |
0 |
0 |
T48 |
0 |
4832 |
0 |
0 |
T49 |
0 |
3970 |
0 |
0 |
T57 |
0 |
2 |
0 |
0 |
T82 |
0 |
176 |
0 |
0 |
T83 |
0 |
456 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
788646768 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
788646768 |
4 |
0 |
956 |
T35 |
235042 |
1 |
0 |
1 |
T65 |
138108 |
0 |
0 |
1 |
T84 |
0 |
1 |
0 |
0 |
T85 |
0 |
1 |
0 |
0 |
T86 |
0 |
1 |
0 |
0 |
T87 |
8941 |
0 |
0 |
1 |
T88 |
73788 |
0 |
0 |
1 |
T89 |
208482 |
0 |
0 |
1 |
T90 |
22348 |
0 |
0 |
1 |
T91 |
802674 |
0 |
0 |
1 |
T92 |
42227 |
0 |
0 |
1 |
T93 |
15826 |
0 |
0 |
1 |
T94 |
995 |
0 |
0 |
1 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
788646768 |
637074864 |
0 |
0 |
T1 |
1752 |
1661 |
0 |
0 |
T2 |
1653 |
1564 |
0 |
0 |
T3 |
521047 |
520918 |
0 |
0 |
T4 |
999 |
939 |
0 |
0 |
T5 |
5436 |
4377 |
0 |
0 |
T6 |
358449 |
296807 |
0 |
0 |
T7 |
74474 |
50751 |
0 |
0 |
T8 |
1281 |
1215 |
0 |
0 |
T9 |
456777 |
360839 |
0 |
0 |
T10 |
917 |
832 |
0 |
0 |
T13 |
8416 |
4208 |
0 |
0 |
T14 |
1728 |
864 |
0 |
0 |
T15 |
26264 |
12962 |
0 |
0 |
T16 |
41640 |
20820 |
0 |
0 |
T17 |
8352 |
4176 |
0 |
0 |
T18 |
0 |
15032 |
0 |
0 |
T26 |
52526 |
50088 |
0 |
0 |
T28 |
0 |
1008 |
0 |
0 |
T29 |
0 |
2312 |
0 |
0 |
T30 |
0 |
107360 |
0 |
0 |
T31 |
0 |
144 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
788646768 |
3780474 |
0 |
0 |
T3 |
463556 |
832 |
0 |
0 |
T4 |
999 |
0 |
0 |
0 |
T5 |
3420 |
0 |
0 |
0 |
T6 |
298837 |
3451 |
0 |
0 |
T7 |
52415 |
0 |
0 |
0 |
T8 |
1281 |
0 |
0 |
0 |
T9 |
364894 |
5427 |
0 |
0 |
T10 |
917 |
0 |
0 |
0 |
T11 |
1162 |
0 |
0 |
0 |
T12 |
7532 |
0 |
0 |
0 |
T13 |
4208 |
832 |
0 |
0 |
T14 |
864 |
0 |
0 |
0 |
T15 |
26264 |
836 |
0 |
0 |
T16 |
41640 |
832 |
0 |
0 |
T17 |
8352 |
832 |
0 |
0 |
T18 |
30268 |
1856 |
0 |
0 |
T19 |
15976 |
832 |
0 |
0 |
T20 |
5084 |
832 |
0 |
0 |
T22 |
21566 |
0 |
0 |
0 |
T23 |
204670 |
2010 |
0 |
0 |
T26 |
105052 |
0 |
0 |
0 |
T29 |
0 |
107 |
0 |
0 |
T44 |
0 |
67 |
0 |
0 |
T45 |
0 |
180 |
0 |
0 |
T46 |
0 |
3561 |
0 |
0 |
T47 |
0 |
4266 |
0 |
0 |
T48 |
0 |
4832 |
0 |
0 |
T49 |
0 |
3970 |
0 |
0 |
T57 |
0 |
2 |
0 |
0 |
T82 |
0 |
176 |
0 |
0 |
T83 |
0 |
456 |
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: T5 T6 T7
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T6 T9 T29
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T5 T6 T7
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 T9 T29
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 T9 T29
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 | T6,T9,T29 |
1 | 0 | Covered | T6,T9,T29 |
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 | T5,T6,T7 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T6,T9,T29 |
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 |
T6,T9,T29 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T5,T6,T7 |
126 if (winner[i]) begin
-1-
127 idx_o = i[IdxW-1:0];
==>
128 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T6,T9,T29 |
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,T9,T29 |
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 |
150126960 |
28300783 |
0 |
0 |
T5 |
1008 |
1008 |
0 |
0 |
T6 |
59612 |
57640 |
0 |
0 |
T7 |
22059 |
20456 |
0 |
0 |
T9 |
91883 |
87920 |
0 |
0 |
T13 |
4208 |
0 |
0 |
0 |
T14 |
864 |
864 |
0 |
0 |
T15 |
13132 |
0 |
0 |
0 |
T16 |
20820 |
0 |
0 |
0 |
T17 |
4176 |
0 |
0 |
0 |
T26 |
52526 |
50088 |
0 |
0 |
T28 |
0 |
1008 |
0 |
0 |
T29 |
0 |
2312 |
0 |
0 |
T30 |
0 |
107360 |
0 |
0 |
T31 |
0 |
144 |
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 |
150126960 |
675356 |
0 |
0 |
T6 |
59612 |
2276 |
0 |
0 |
T7 |
22059 |
0 |
0 |
0 |
T9 |
91883 |
3698 |
0 |
0 |
T13 |
4208 |
0 |
0 |
0 |
T14 |
864 |
0 |
0 |
0 |
T15 |
13132 |
0 |
0 |
0 |
T16 |
20820 |
0 |
0 |
0 |
T17 |
4176 |
0 |
0 |
0 |
T18 |
15134 |
0 |
0 |
0 |
T26 |
52526 |
0 |
0 |
0 |
T29 |
0 |
107 |
0 |
0 |
T44 |
0 |
67 |
0 |
0 |
T45 |
0 |
180 |
0 |
0 |
T46 |
0 |
3561 |
0 |
0 |
T47 |
0 |
4266 |
0 |
0 |
T48 |
0 |
4832 |
0 |
0 |
T82 |
0 |
176 |
0 |
0 |
T83 |
0 |
456 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
675356 |
0 |
0 |
T6 |
59612 |
2276 |
0 |
0 |
T7 |
22059 |
0 |
0 |
0 |
T9 |
91883 |
3698 |
0 |
0 |
T13 |
4208 |
0 |
0 |
0 |
T14 |
864 |
0 |
0 |
0 |
T15 |
13132 |
0 |
0 |
0 |
T16 |
20820 |
0 |
0 |
0 |
T17 |
4176 |
0 |
0 |
0 |
T18 |
15134 |
0 |
0 |
0 |
T26 |
52526 |
0 |
0 |
0 |
T29 |
0 |
107 |
0 |
0 |
T44 |
0 |
67 |
0 |
0 |
T45 |
0 |
180 |
0 |
0 |
T46 |
0 |
3561 |
0 |
0 |
T47 |
0 |
4266 |
0 |
0 |
T48 |
0 |
4832 |
0 |
0 |
T82 |
0 |
176 |
0 |
0 |
T83 |
0 |
456 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
28300783 |
0 |
0 |
T5 |
1008 |
1008 |
0 |
0 |
T6 |
59612 |
57640 |
0 |
0 |
T7 |
22059 |
20456 |
0 |
0 |
T9 |
91883 |
87920 |
0 |
0 |
T13 |
4208 |
0 |
0 |
0 |
T14 |
864 |
864 |
0 |
0 |
T15 |
13132 |
0 |
0 |
0 |
T16 |
20820 |
0 |
0 |
0 |
T17 |
4176 |
0 |
0 |
0 |
T26 |
52526 |
50088 |
0 |
0 |
T28 |
0 |
1008 |
0 |
0 |
T29 |
0 |
2312 |
0 |
0 |
T30 |
0 |
107360 |
0 |
0 |
T31 |
0 |
144 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
28300783 |
0 |
0 |
T5 |
1008 |
1008 |
0 |
0 |
T6 |
59612 |
57640 |
0 |
0 |
T7 |
22059 |
20456 |
0 |
0 |
T9 |
91883 |
87920 |
0 |
0 |
T13 |
4208 |
0 |
0 |
0 |
T14 |
864 |
864 |
0 |
0 |
T15 |
13132 |
0 |
0 |
0 |
T16 |
20820 |
0 |
0 |
0 |
T17 |
4176 |
0 |
0 |
0 |
T26 |
52526 |
50088 |
0 |
0 |
T28 |
0 |
1008 |
0 |
0 |
T29 |
0 |
2312 |
0 |
0 |
T30 |
0 |
107360 |
0 |
0 |
T31 |
0 |
144 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
675356 |
0 |
0 |
T6 |
59612 |
2276 |
0 |
0 |
T7 |
22059 |
0 |
0 |
0 |
T9 |
91883 |
3698 |
0 |
0 |
T13 |
4208 |
0 |
0 |
0 |
T14 |
864 |
0 |
0 |
0 |
T15 |
13132 |
0 |
0 |
0 |
T16 |
20820 |
0 |
0 |
0 |
T17 |
4176 |
0 |
0 |
0 |
T18 |
15134 |
0 |
0 |
0 |
T26 |
52526 |
0 |
0 |
0 |
T29 |
0 |
107 |
0 |
0 |
T44 |
0 |
67 |
0 |
0 |
T45 |
0 |
180 |
0 |
0 |
T46 |
0 |
3561 |
0 |
0 |
T47 |
0 |
4266 |
0 |
0 |
T48 |
0 |
4832 |
0 |
0 |
T82 |
0 |
176 |
0 |
0 |
T83 |
0 |
456 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
675356 |
0 |
0 |
T6 |
59612 |
2276 |
0 |
0 |
T7 |
22059 |
0 |
0 |
0 |
T9 |
91883 |
3698 |
0 |
0 |
T13 |
4208 |
0 |
0 |
0 |
T14 |
864 |
0 |
0 |
0 |
T15 |
13132 |
0 |
0 |
0 |
T16 |
20820 |
0 |
0 |
0 |
T17 |
4176 |
0 |
0 |
0 |
T18 |
15134 |
0 |
0 |
0 |
T26 |
52526 |
0 |
0 |
0 |
T29 |
0 |
107 |
0 |
0 |
T44 |
0 |
67 |
0 |
0 |
T45 |
0 |
180 |
0 |
0 |
T46 |
0 |
3561 |
0 |
0 |
T47 |
0 |
4266 |
0 |
0 |
T48 |
0 |
4832 |
0 |
0 |
T82 |
0 |
176 |
0 |
0 |
T83 |
0 |
456 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
675356 |
0 |
0 |
T6 |
59612 |
2276 |
0 |
0 |
T7 |
22059 |
0 |
0 |
0 |
T9 |
91883 |
3698 |
0 |
0 |
T13 |
4208 |
0 |
0 |
0 |
T14 |
864 |
0 |
0 |
0 |
T15 |
13132 |
0 |
0 |
0 |
T16 |
20820 |
0 |
0 |
0 |
T17 |
4176 |
0 |
0 |
0 |
T18 |
15134 |
0 |
0 |
0 |
T26 |
52526 |
0 |
0 |
0 |
T29 |
0 |
107 |
0 |
0 |
T44 |
0 |
67 |
0 |
0 |
T45 |
0 |
180 |
0 |
0 |
T46 |
0 |
3561 |
0 |
0 |
T47 |
0 |
4266 |
0 |
0 |
T48 |
0 |
4832 |
0 |
0 |
T82 |
0 |
176 |
0 |
0 |
T83 |
0 |
456 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
675356 |
0 |
0 |
T6 |
59612 |
2276 |
0 |
0 |
T7 |
22059 |
0 |
0 |
0 |
T9 |
91883 |
3698 |
0 |
0 |
T13 |
4208 |
0 |
0 |
0 |
T14 |
864 |
0 |
0 |
0 |
T15 |
13132 |
0 |
0 |
0 |
T16 |
20820 |
0 |
0 |
0 |
T17 |
4176 |
0 |
0 |
0 |
T18 |
15134 |
0 |
0 |
0 |
T26 |
52526 |
0 |
0 |
0 |
T29 |
0 |
107 |
0 |
0 |
T44 |
0 |
67 |
0 |
0 |
T45 |
0 |
180 |
0 |
0 |
T46 |
0 |
3561 |
0 |
0 |
T47 |
0 |
4266 |
0 |
0 |
T48 |
0 |
4832 |
0 |
0 |
T82 |
0 |
176 |
0 |
0 |
T83 |
0 |
456 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
0 |
0 |
0 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
28300783 |
0 |
0 |
T5 |
1008 |
1008 |
0 |
0 |
T6 |
59612 |
57640 |
0 |
0 |
T7 |
22059 |
20456 |
0 |
0 |
T9 |
91883 |
87920 |
0 |
0 |
T13 |
4208 |
0 |
0 |
0 |
T14 |
864 |
864 |
0 |
0 |
T15 |
13132 |
0 |
0 |
0 |
T16 |
20820 |
0 |
0 |
0 |
T17 |
4176 |
0 |
0 |
0 |
T26 |
52526 |
50088 |
0 |
0 |
T28 |
0 |
1008 |
0 |
0 |
T29 |
0 |
2312 |
0 |
0 |
T30 |
0 |
107360 |
0 |
0 |
T31 |
0 |
144 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
675356 |
0 |
0 |
T6 |
59612 |
2276 |
0 |
0 |
T7 |
22059 |
0 |
0 |
0 |
T9 |
91883 |
3698 |
0 |
0 |
T13 |
4208 |
0 |
0 |
0 |
T14 |
864 |
0 |
0 |
0 |
T15 |
13132 |
0 |
0 |
0 |
T16 |
20820 |
0 |
0 |
0 |
T17 |
4176 |
0 |
0 |
0 |
T18 |
15134 |
0 |
0 |
0 |
T26 |
52526 |
0 |
0 |
0 |
T29 |
0 |
107 |
0 |
0 |
T44 |
0 |
67 |
0 |
0 |
T45 |
0 |
180 |
0 |
0 |
T46 |
0 |
3561 |
0 |
0 |
T47 |
0 |
4266 |
0 |
0 |
T48 |
0 |
4832 |
0 |
0 |
T82 |
0 |
176 |
0 |
0 |
T83 |
0 |
456 |
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: T3 T13 T15
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T15 T23 T57
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T3 T13 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: T15 T23 T57
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: T15 T23 T57
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 | T23,T49,T55 |
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 | T23,T49,T55 |
1 | 0 | Covered | T15,T23,T57 |
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,T13,T15 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T15,T23,T57 |
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 |
T23,T49,T55 |
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 |
T15,T23,T57 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T3,T13,T15 |
126 if (winner[i]) begin
-1-
127 idx_o = i[IdxW-1:0];
==>
128 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T15,T23,T57 |
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 |
T15,T23,T57 |
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 |
150126960 |
120467688 |
0 |
0 |
T3 |
57491 |
57452 |
0 |
0 |
T5 |
1008 |
0 |
0 |
0 |
T6 |
59612 |
0 |
0 |
0 |
T7 |
22059 |
0 |
0 |
0 |
T9 |
91883 |
0 |
0 |
0 |
T13 |
4208 |
4208 |
0 |
0 |
T14 |
864 |
0 |
0 |
0 |
T15 |
13132 |
12962 |
0 |
0 |
T16 |
20820 |
20820 |
0 |
0 |
T17 |
4176 |
4176 |
0 |
0 |
T18 |
0 |
15032 |
0 |
0 |
T19 |
0 |
15632 |
0 |
0 |
T20 |
0 |
4368 |
0 |
0 |
T22 |
0 |
21504 |
0 |
0 |
T23 |
0 |
203101 |
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 |
150126960 |
793966 |
0 |
0 |
T15 |
13132 |
2 |
0 |
0 |
T16 |
20820 |
0 |
0 |
0 |
T17 |
4176 |
0 |
0 |
0 |
T18 |
15134 |
0 |
0 |
0 |
T19 |
15976 |
0 |
0 |
0 |
T20 |
5084 |
0 |
0 |
0 |
T22 |
21566 |
0 |
0 |
0 |
T23 |
204670 |
2010 |
0 |
0 |
T26 |
52526 |
0 |
0 |
0 |
T49 |
0 |
3970 |
0 |
0 |
T55 |
0 |
263 |
0 |
0 |
T56 |
0 |
317 |
0 |
0 |
T57 |
21000 |
2 |
0 |
0 |
T62 |
0 |
265 |
0 |
0 |
T95 |
0 |
778 |
0 |
0 |
T96 |
0 |
4936 |
0 |
0 |
T97 |
0 |
5866 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
793966 |
0 |
0 |
T15 |
13132 |
2 |
0 |
0 |
T16 |
20820 |
0 |
0 |
0 |
T17 |
4176 |
0 |
0 |
0 |
T18 |
15134 |
0 |
0 |
0 |
T19 |
15976 |
0 |
0 |
0 |
T20 |
5084 |
0 |
0 |
0 |
T22 |
21566 |
0 |
0 |
0 |
T23 |
204670 |
2010 |
0 |
0 |
T26 |
52526 |
0 |
0 |
0 |
T49 |
0 |
3970 |
0 |
0 |
T55 |
0 |
263 |
0 |
0 |
T56 |
0 |
317 |
0 |
0 |
T57 |
21000 |
2 |
0 |
0 |
T62 |
0 |
265 |
0 |
0 |
T95 |
0 |
778 |
0 |
0 |
T96 |
0 |
4936 |
0 |
0 |
T97 |
0 |
5866 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
120467688 |
0 |
0 |
T3 |
57491 |
57452 |
0 |
0 |
T5 |
1008 |
0 |
0 |
0 |
T6 |
59612 |
0 |
0 |
0 |
T7 |
22059 |
0 |
0 |
0 |
T9 |
91883 |
0 |
0 |
0 |
T13 |
4208 |
4208 |
0 |
0 |
T14 |
864 |
0 |
0 |
0 |
T15 |
13132 |
12962 |
0 |
0 |
T16 |
20820 |
20820 |
0 |
0 |
T17 |
4176 |
4176 |
0 |
0 |
T18 |
0 |
15032 |
0 |
0 |
T19 |
0 |
15632 |
0 |
0 |
T20 |
0 |
4368 |
0 |
0 |
T22 |
0 |
21504 |
0 |
0 |
T23 |
0 |
203101 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
120467688 |
0 |
0 |
T3 |
57491 |
57452 |
0 |
0 |
T5 |
1008 |
0 |
0 |
0 |
T6 |
59612 |
0 |
0 |
0 |
T7 |
22059 |
0 |
0 |
0 |
T9 |
91883 |
0 |
0 |
0 |
T13 |
4208 |
4208 |
0 |
0 |
T14 |
864 |
0 |
0 |
0 |
T15 |
13132 |
12962 |
0 |
0 |
T16 |
20820 |
20820 |
0 |
0 |
T17 |
4176 |
4176 |
0 |
0 |
T18 |
0 |
15032 |
0 |
0 |
T19 |
0 |
15632 |
0 |
0 |
T20 |
0 |
4368 |
0 |
0 |
T22 |
0 |
21504 |
0 |
0 |
T23 |
0 |
203101 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
793966 |
0 |
0 |
T15 |
13132 |
2 |
0 |
0 |
T16 |
20820 |
0 |
0 |
0 |
T17 |
4176 |
0 |
0 |
0 |
T18 |
15134 |
0 |
0 |
0 |
T19 |
15976 |
0 |
0 |
0 |
T20 |
5084 |
0 |
0 |
0 |
T22 |
21566 |
0 |
0 |
0 |
T23 |
204670 |
2010 |
0 |
0 |
T26 |
52526 |
0 |
0 |
0 |
T49 |
0 |
3970 |
0 |
0 |
T55 |
0 |
263 |
0 |
0 |
T56 |
0 |
317 |
0 |
0 |
T57 |
21000 |
2 |
0 |
0 |
T62 |
0 |
265 |
0 |
0 |
T95 |
0 |
778 |
0 |
0 |
T96 |
0 |
4936 |
0 |
0 |
T97 |
0 |
5866 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
793966 |
0 |
0 |
T15 |
13132 |
2 |
0 |
0 |
T16 |
20820 |
0 |
0 |
0 |
T17 |
4176 |
0 |
0 |
0 |
T18 |
15134 |
0 |
0 |
0 |
T19 |
15976 |
0 |
0 |
0 |
T20 |
5084 |
0 |
0 |
0 |
T22 |
21566 |
0 |
0 |
0 |
T23 |
204670 |
2010 |
0 |
0 |
T26 |
52526 |
0 |
0 |
0 |
T49 |
0 |
3970 |
0 |
0 |
T55 |
0 |
263 |
0 |
0 |
T56 |
0 |
317 |
0 |
0 |
T57 |
21000 |
2 |
0 |
0 |
T62 |
0 |
265 |
0 |
0 |
T95 |
0 |
778 |
0 |
0 |
T96 |
0 |
4936 |
0 |
0 |
T97 |
0 |
5866 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
793966 |
0 |
0 |
T15 |
13132 |
2 |
0 |
0 |
T16 |
20820 |
0 |
0 |
0 |
T17 |
4176 |
0 |
0 |
0 |
T18 |
15134 |
0 |
0 |
0 |
T19 |
15976 |
0 |
0 |
0 |
T20 |
5084 |
0 |
0 |
0 |
T22 |
21566 |
0 |
0 |
0 |
T23 |
204670 |
2010 |
0 |
0 |
T26 |
52526 |
0 |
0 |
0 |
T49 |
0 |
3970 |
0 |
0 |
T55 |
0 |
263 |
0 |
0 |
T56 |
0 |
317 |
0 |
0 |
T57 |
21000 |
2 |
0 |
0 |
T62 |
0 |
265 |
0 |
0 |
T95 |
0 |
778 |
0 |
0 |
T96 |
0 |
4936 |
0 |
0 |
T97 |
0 |
5866 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
793966 |
0 |
0 |
T15 |
13132 |
2 |
0 |
0 |
T16 |
20820 |
0 |
0 |
0 |
T17 |
4176 |
0 |
0 |
0 |
T18 |
15134 |
0 |
0 |
0 |
T19 |
15976 |
0 |
0 |
0 |
T20 |
5084 |
0 |
0 |
0 |
T22 |
21566 |
0 |
0 |
0 |
T23 |
204670 |
2010 |
0 |
0 |
T26 |
52526 |
0 |
0 |
0 |
T49 |
0 |
3970 |
0 |
0 |
T55 |
0 |
263 |
0 |
0 |
T56 |
0 |
317 |
0 |
0 |
T57 |
21000 |
2 |
0 |
0 |
T62 |
0 |
265 |
0 |
0 |
T95 |
0 |
778 |
0 |
0 |
T96 |
0 |
4936 |
0 |
0 |
T97 |
0 |
5866 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
0 |
0 |
0 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
120467688 |
0 |
0 |
T3 |
57491 |
57452 |
0 |
0 |
T5 |
1008 |
0 |
0 |
0 |
T6 |
59612 |
0 |
0 |
0 |
T7 |
22059 |
0 |
0 |
0 |
T9 |
91883 |
0 |
0 |
0 |
T13 |
4208 |
4208 |
0 |
0 |
T14 |
864 |
0 |
0 |
0 |
T15 |
13132 |
12962 |
0 |
0 |
T16 |
20820 |
20820 |
0 |
0 |
T17 |
4176 |
4176 |
0 |
0 |
T18 |
0 |
15032 |
0 |
0 |
T19 |
0 |
15632 |
0 |
0 |
T20 |
0 |
4368 |
0 |
0 |
T22 |
0 |
21504 |
0 |
0 |
T23 |
0 |
203101 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
150126960 |
793966 |
0 |
0 |
T15 |
13132 |
2 |
0 |
0 |
T16 |
20820 |
0 |
0 |
0 |
T17 |
4176 |
0 |
0 |
0 |
T18 |
15134 |
0 |
0 |
0 |
T19 |
15976 |
0 |
0 |
0 |
T20 |
5084 |
0 |
0 |
0 |
T22 |
21566 |
0 |
0 |
0 |
T23 |
204670 |
2010 |
0 |
0 |
T26 |
52526 |
0 |
0 |
0 |
T49 |
0 |
3970 |
0 |
0 |
T55 |
0 |
263 |
0 |
0 |
T56 |
0 |
317 |
0 |
0 |
T57 |
21000 |
2 |
0 |
0 |
T62 |
0 |
265 |
0 |
0 |
T95 |
0 |
778 |
0 |
0 |
T96 |
0 |
4936 |
0 |
0 |
T97 |
0 |
5866 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_sys_sram_arbiter.gen_arb_ppc.u_reqarb
| Line No. | Total | Covered | Percent |
TOTAL | | 22 | 22 | 100.00 |
CONT_ASSIGN | 55 | 0 | 0 | |
CONT_ASSIGN | 75 | 1 | 1 | 100.00 |
CONT_ASSIGN | 76 | 1 | 1 | 100.00 |
ALWAYS | 82 | 3 | 3 | 100.00 |
CONT_ASSIGN | 89 | 1 | 1 | 100.00 |
CONT_ASSIGN | 90 | 1 | 1 | 100.00 |
CONT_ASSIGN | 92 | 1 | 1 | 100.00 |
CONT_ASSIGN | 94 | 1 | 1 | 100.00 |
ALWAYS | 96 | 5 | 5 | 100.00 |
ALWAYS | 109 | 4 | 4 | 100.00 |
ALWAYS | 124 | 4 | 4 | 100.00 |
54 logic unused_req_chk;
55 unreachable assign unused_req_chk = req_chk_i;
56
57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0)
58
59 // this case is basically just a bypass
60 if (N == 1) begin : gen_degenerate_case
61
62 assign valid_o = req_i[0];
63 assign data_o = data_i[0];
64 assign gnt_o[0] = valid_o & ready_i;
65 assign idx_o = '0;
66
67 end else begin : gen_normal_case
68
69 logic [N-1:0] masked_req;
70 logic [N-1:0] ppc_out;
71 logic [N-1:0] arb_req;
72 logic [N-1:0] mask, mask_next;
73 logic [N-1:0] winner;
74
75 1/1 assign masked_req = mask & req_i;
Tests: T1 T2 T3
76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i;
Tests: T1 T2 T3
77
78 // PPC
79 // Even below code looks O(n) but DC optimizes it to O(log(N))
80 // Using Parallel Prefix Computation
81 always_comb begin
82 1/1 ppc_out[0] = arb_req[0];
Tests: T1 T2 T3
83 1/1 for (int i = 1 ; i < N ; i++) begin
Tests: T1 T2 T3
84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i];
Tests: T1 T2 T3
85 end
86 end
87
88 // Grant Generation: Leading-One detector
89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
90 1/1 assign gnt_o = (ready_i) ? winner : '0;
Tests: T1 T2 T3
91
92 1/1 assign valid_o = |req_i;
Tests: T1 T2 T3
93 // Mask Generation
94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
95 always_ff @(posedge clk_i or negedge rst_ni) begin
96 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
97 1/1 mask <= '0;
Tests: T1 T2 T3
98 1/1 end else if (valid_o && ready_i) begin
Tests: T1 T2 T3
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T3 T6 T9
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T1 T2 T3
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 unreachable mask <= ppc_out;
104 end
MISSING_ELSE
105 end
106
107 if (EnDataPort == 1) begin: gen_datapath
108 always_comb begin
109 1/1 data_o = '0;
Tests: T1 T2 T3
110 1/1 for (int i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
111 1/1 if (winner[i]) begin
Tests: T1 T2 T3
112 1/1 data_o = data_i[i];
Tests: T3 T6 T9
113 end
MISSING_ELSE
114 end
115 end
116 end else begin: gen_nodatapath
117 assign data_o = '1;
118 // The following signal is used to avoid possible lint errors.
119 logic [DW-1:0] unused_data [N];
120 assign unused_data = data_i;
121 end
122
123 always_comb begin
124 1/1 idx_o = '0;
Tests: T1 T2 T3
125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
126 1/1 if (winner[i]) begin
Tests: T1 T2 T3
127 1/1 idx_o = i[IdxW-1:0];
Tests: T3 T6 T9
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 | T6,T9,T15 |
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,T9,T15 |
1 | 0 | Covered | T3,T6,T9 |
LINE 90
EXPRESSION (ready_i ? gen_normal_case.winner : '0)
---1---
-1- | Status | Tests |
0 | Unreachable | |
1 | Covered | T1,T2,T3 |
LINE 98
EXPRESSION (valid_o && ready_i)
---1--- ---2---
-1- | -2- | Status | Tests |
0 | 1 | Covered | T1,T2,T3 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T3,T6,T9 |
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 |
T6,T9,T15 |
0 |
Covered |
T1,T2,T3 |
90 assign gnt_o = (ready_i) ? winner : '0;
-1-
==>
==> (Unreachable)
Branches:
-1- | Status | Tests |
1 |
Covered |
T1,T2,T3 |
0 |
Unreachable |
|
96 if (!rst_ni) begin
-1-
97 mask <= '0;
==>
98 end else if (valid_o && ready_i) begin
-2-
99 // Latch only when requests accepted
100 mask <= mask_next;
==>
101 end else if (valid_o && !ready_i) begin
-3-
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 mask <= ppc_out;
==> (Unreachable)
104 end
MISSING_ELSE
==>
Branches:
-1- | -2- | -3- | Status | Tests |
1 |
- |
- |
Covered |
T1,T2,T3 |
0 |
1 |
- |
Covered |
T3,T6,T9 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T1,T2,T3 |
126 if (winner[i]) begin
-1-
127 idx_o = i[IdxW-1:0];
==>
128 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T3,T6,T9 |
0 |
Covered |
T1,T2,T3 |
111 if (winner[i]) begin
-1-
112 data_o = data_i[i];
==>
113 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T3,T6,T9 |
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 |
488392848 |
488306393 |
0 |
0 |
T1 |
1752 |
1661 |
0 |
0 |
T2 |
1653 |
1564 |
0 |
0 |
T3 |
463556 |
463466 |
0 |
0 |
T4 |
999 |
939 |
0 |
0 |
T5 |
3420 |
3369 |
0 |
0 |
T6 |
239225 |
239167 |
0 |
0 |
T7 |
30356 |
30295 |
0 |
0 |
T8 |
1281 |
1215 |
0 |
0 |
T9 |
273011 |
272919 |
0 |
0 |
T10 |
917 |
832 |
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 |
488392848 |
2311152 |
0 |
0 |
T3 |
463556 |
832 |
0 |
0 |
T4 |
999 |
0 |
0 |
0 |
T5 |
3420 |
0 |
0 |
0 |
T6 |
239225 |
1175 |
0 |
0 |
T7 |
30356 |
0 |
0 |
0 |
T8 |
1281 |
0 |
0 |
0 |
T9 |
273011 |
1729 |
0 |
0 |
T10 |
917 |
0 |
0 |
0 |
T11 |
1162 |
0 |
0 |
0 |
T12 |
7532 |
0 |
0 |
0 |
T13 |
0 |
832 |
0 |
0 |
T15 |
0 |
834 |
0 |
0 |
T16 |
0 |
832 |
0 |
0 |
T17 |
0 |
832 |
0 |
0 |
T18 |
0 |
1856 |
0 |
0 |
T19 |
0 |
832 |
0 |
0 |
T20 |
0 |
832 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
488392848 |
2311152 |
0 |
0 |
T3 |
463556 |
832 |
0 |
0 |
T4 |
999 |
0 |
0 |
0 |
T5 |
3420 |
0 |
0 |
0 |
T6 |
239225 |
1175 |
0 |
0 |
T7 |
30356 |
0 |
0 |
0 |
T8 |
1281 |
0 |
0 |
0 |
T9 |
273011 |
1729 |
0 |
0 |
T10 |
917 |
0 |
0 |
0 |
T11 |
1162 |
0 |
0 |
0 |
T12 |
7532 |
0 |
0 |
0 |
T13 |
0 |
832 |
0 |
0 |
T15 |
0 |
834 |
0 |
0 |
T16 |
0 |
832 |
0 |
0 |
T17 |
0 |
832 |
0 |
0 |
T18 |
0 |
1856 |
0 |
0 |
T19 |
0 |
832 |
0 |
0 |
T20 |
0 |
832 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
488392848 |
488306393 |
0 |
0 |
T1 |
1752 |
1661 |
0 |
0 |
T2 |
1653 |
1564 |
0 |
0 |
T3 |
463556 |
463466 |
0 |
0 |
T4 |
999 |
939 |
0 |
0 |
T5 |
3420 |
3369 |
0 |
0 |
T6 |
239225 |
239167 |
0 |
0 |
T7 |
30356 |
30295 |
0 |
0 |
T8 |
1281 |
1215 |
0 |
0 |
T9 |
273011 |
272919 |
0 |
0 |
T10 |
917 |
832 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
488392848 |
488306393 |
0 |
0 |
T1 |
1752 |
1661 |
0 |
0 |
T2 |
1653 |
1564 |
0 |
0 |
T3 |
463556 |
463466 |
0 |
0 |
T4 |
999 |
939 |
0 |
0 |
T5 |
3420 |
3369 |
0 |
0 |
T6 |
239225 |
239167 |
0 |
0 |
T7 |
30356 |
30295 |
0 |
0 |
T8 |
1281 |
1215 |
0 |
0 |
T9 |
273011 |
272919 |
0 |
0 |
T10 |
917 |
832 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
488392848 |
2311152 |
0 |
0 |
T3 |
463556 |
832 |
0 |
0 |
T4 |
999 |
0 |
0 |
0 |
T5 |
3420 |
0 |
0 |
0 |
T6 |
239225 |
1175 |
0 |
0 |
T7 |
30356 |
0 |
0 |
0 |
T8 |
1281 |
0 |
0 |
0 |
T9 |
273011 |
1729 |
0 |
0 |
T10 |
917 |
0 |
0 |
0 |
T11 |
1162 |
0 |
0 |
0 |
T12 |
7532 |
0 |
0 |
0 |
T13 |
0 |
832 |
0 |
0 |
T15 |
0 |
834 |
0 |
0 |
T16 |
0 |
832 |
0 |
0 |
T17 |
0 |
832 |
0 |
0 |
T18 |
0 |
1856 |
0 |
0 |
T19 |
0 |
832 |
0 |
0 |
T20 |
0 |
832 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
488392848 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
488392848 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
488392848 |
2311152 |
0 |
0 |
T3 |
463556 |
832 |
0 |
0 |
T4 |
999 |
0 |
0 |
0 |
T5 |
3420 |
0 |
0 |
0 |
T6 |
239225 |
1175 |
0 |
0 |
T7 |
30356 |
0 |
0 |
0 |
T8 |
1281 |
0 |
0 |
0 |
T9 |
273011 |
1729 |
0 |
0 |
T10 |
917 |
0 |
0 |
0 |
T11 |
1162 |
0 |
0 |
0 |
T12 |
7532 |
0 |
0 |
0 |
T13 |
0 |
832 |
0 |
0 |
T15 |
0 |
834 |
0 |
0 |
T16 |
0 |
832 |
0 |
0 |
T17 |
0 |
832 |
0 |
0 |
T18 |
0 |
1856 |
0 |
0 |
T19 |
0 |
832 |
0 |
0 |
T20 |
0 |
832 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
488392848 |
2311152 |
0 |
0 |
T3 |
463556 |
832 |
0 |
0 |
T4 |
999 |
0 |
0 |
0 |
T5 |
3420 |
0 |
0 |
0 |
T6 |
239225 |
1175 |
0 |
0 |
T7 |
30356 |
0 |
0 |
0 |
T8 |
1281 |
0 |
0 |
0 |
T9 |
273011 |
1729 |
0 |
0 |
T10 |
917 |
0 |
0 |
0 |
T11 |
1162 |
0 |
0 |
0 |
T12 |
7532 |
0 |
0 |
0 |
T13 |
0 |
832 |
0 |
0 |
T15 |
0 |
834 |
0 |
0 |
T16 |
0 |
832 |
0 |
0 |
T17 |
0 |
832 |
0 |
0 |
T18 |
0 |
1856 |
0 |
0 |
T19 |
0 |
832 |
0 |
0 |
T20 |
0 |
832 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
488392848 |
2311152 |
0 |
0 |
T3 |
463556 |
832 |
0 |
0 |
T4 |
999 |
0 |
0 |
0 |
T5 |
3420 |
0 |
0 |
0 |
T6 |
239225 |
1175 |
0 |
0 |
T7 |
30356 |
0 |
0 |
0 |
T8 |
1281 |
0 |
0 |
0 |
T9 |
273011 |
1729 |
0 |
0 |
T10 |
917 |
0 |
0 |
0 |
T11 |
1162 |
0 |
0 |
0 |
T12 |
7532 |
0 |
0 |
0 |
T13 |
0 |
832 |
0 |
0 |
T15 |
0 |
834 |
0 |
0 |
T16 |
0 |
832 |
0 |
0 |
T17 |
0 |
832 |
0 |
0 |
T18 |
0 |
1856 |
0 |
0 |
T19 |
0 |
832 |
0 |
0 |
T20 |
0 |
832 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
488392848 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
488392848 |
4 |
0 |
956 |
T35 |
235042 |
1 |
0 |
1 |
T65 |
138108 |
0 |
0 |
1 |
T84 |
0 |
1 |
0 |
0 |
T85 |
0 |
1 |
0 |
0 |
T86 |
0 |
1 |
0 |
0 |
T87 |
8941 |
0 |
0 |
1 |
T88 |
73788 |
0 |
0 |
1 |
T89 |
208482 |
0 |
0 |
1 |
T90 |
22348 |
0 |
0 |
1 |
T91 |
802674 |
0 |
0 |
1 |
T92 |
42227 |
0 |
0 |
1 |
T93 |
15826 |
0 |
0 |
1 |
T94 |
995 |
0 |
0 |
1 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
488392848 |
488306393 |
0 |
0 |
T1 |
1752 |
1661 |
0 |
0 |
T2 |
1653 |
1564 |
0 |
0 |
T3 |
463556 |
463466 |
0 |
0 |
T4 |
999 |
939 |
0 |
0 |
T5 |
3420 |
3369 |
0 |
0 |
T6 |
239225 |
239167 |
0 |
0 |
T7 |
30356 |
30295 |
0 |
0 |
T8 |
1281 |
1215 |
0 |
0 |
T9 |
273011 |
272919 |
0 |
0 |
T10 |
917 |
832 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
488392848 |
2311152 |
0 |
0 |
T3 |
463556 |
832 |
0 |
0 |
T4 |
999 |
0 |
0 |
0 |
T5 |
3420 |
0 |
0 |
0 |
T6 |
239225 |
1175 |
0 |
0 |
T7 |
30356 |
0 |
0 |
0 |
T8 |
1281 |
0 |
0 |
0 |
T9 |
273011 |
1729 |
0 |
0 |
T10 |
917 |
0 |
0 |
0 |
T11 |
1162 |
0 |
0 |
0 |
T12 |
7532 |
0 |
0 |
0 |
T13 |
0 |
832 |
0 |
0 |
T15 |
0 |
834 |
0 |
0 |
T16 |
0 |
832 |
0 |
0 |
T17 |
0 |
832 |
0 |
0 |
T18 |
0 |
1856 |
0 |
0 |
T19 |
0 |
832 |
0 |
0 |
T20 |
0 |
832 |
0 |
0 |