Line Coverage for Module :
prim_arbiter_ppc ( parameter N=3,DW=75,EnDataPort=1,IdxW=2 + N=5,DW=75,EnDataPort=1,IdxW=3 )
Line Coverage for Module self-instances :
| Line No. | Total | Covered | Percent |
TOTAL | | 22 | 22 | 100.00 |
CONT_ASSIGN | 55 | 0 | 0 | |
CONT_ASSIGN | 75 | 1 | 1 | 100.00 |
CONT_ASSIGN | 76 | 1 | 1 | 100.00 |
ALWAYS | 82 | 3 | 3 | 100.00 |
CONT_ASSIGN | 89 | 1 | 1 | 100.00 |
CONT_ASSIGN | 90 | 1 | 1 | 100.00 |
CONT_ASSIGN | 92 | 1 | 1 | 100.00 |
CONT_ASSIGN | 94 | 1 | 1 | 100.00 |
ALWAYS | 96 | 5 | 5 | 100.00 |
ALWAYS | 109 | 4 | 4 | 100.00 |
ALWAYS | 124 | 4 | 4 | 100.00 |
54 logic unused_req_chk;
55 unreachable assign unused_req_chk = req_chk_i;
56
57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0)
58
59 // this case is basically just a bypass
60 if (N == 1) begin : gen_degenerate_case
61
62 assign valid_o = req_i[0];
63 assign data_o = data_i[0];
64 assign gnt_o[0] = valid_o & ready_i;
65 assign idx_o = '0;
66
67 end else begin : gen_normal_case
68
69 logic [N-1:0] masked_req;
70 logic [N-1:0] ppc_out;
71 logic [N-1:0] arb_req;
72 logic [N-1:0] mask, mask_next;
73 logic [N-1:0] winner;
74
75 1/1 assign masked_req = mask & req_i;
Tests: T1 T2 T3
76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i;
Tests: T1 T2 T3
77
78 // PPC
79 // Even below code looks O(n) but DC optimizes it to O(log(N))
80 // Using Parallel Prefix Computation
81 always_comb begin
82 1/1 ppc_out[0] = arb_req[0];
Tests: T1 T2 T3
83 1/1 for (int i = 1 ; i < N ; i++) begin
Tests: T1 T2 T3
84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i];
Tests: T1 T2 T3
85 end
86 end
87
88 // Grant Generation: Leading-One detector
89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
90 1/1 assign gnt_o = (ready_i) ? winner : '0;
Tests: T1 T2 T3
91
92 1/1 assign valid_o = |req_i;
Tests: T1 T2 T3
93 // Mask Generation
94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
95 always_ff @(posedge clk_i or negedge rst_ni) begin
96 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
97 1/1 mask <= '0;
Tests: T1 T2 T3
98 1/1 end else if (valid_o && ready_i) begin
Tests: T1 T2 T3
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T4 T5 T6
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T1 T2 T3
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 unreachable mask <= ppc_out;
104 end
MISSING_ELSE
105 end
106
107 if (EnDataPort == 1) begin: gen_datapath
108 always_comb begin
109 1/1 data_o = '0;
Tests: T1 T2 T3
110 1/1 for (int i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
111 1/1 if (winner[i]) begin
Tests: T1 T2 T3
112 1/1 data_o = data_i[i];
Tests: T4 T5 T6
113 end
MISSING_ELSE
114 end
115 end
116 end else begin: gen_nodatapath
117 assign data_o = '1;
118 // The following signal is used to avoid possible lint errors.
119 logic [DW-1:0] unused_data [N];
120 assign unused_data = data_i;
121 end
122
123 always_comb begin
124 1/1 idx_o = '0;
Tests: T1 T2 T3
125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
126 1/1 if (winner[i]) begin
Tests: T1 T2 T3
127 1/1 idx_o = i[IdxW-1:0];
Tests: T4 T5 T6
128 end
MISSING_ELSE
Line Coverage for Module :
prim_arbiter_ppc ( parameter N=2,DW=75,EnDataPort=1,IdxW=1 )
Line Coverage for Module self-instances :
| Line No. | Total | Covered | Percent |
TOTAL | | 22 | 22 | 100.00 |
CONT_ASSIGN | 55 | 0 | 0 | |
CONT_ASSIGN | 75 | 1 | 1 | 100.00 |
CONT_ASSIGN | 76 | 1 | 1 | 100.00 |
ALWAYS | 82 | 3 | 3 | 100.00 |
CONT_ASSIGN | 89 | 1 | 1 | 100.00 |
CONT_ASSIGN | 90 | 1 | 1 | 100.00 |
CONT_ASSIGN | 92 | 1 | 1 | 100.00 |
CONT_ASSIGN | 94 | 1 | 1 | 100.00 |
ALWAYS | 96 | 5 | 5 | 100.00 |
ALWAYS | 109 | 4 | 4 | 100.00 |
ALWAYS | 124 | 4 | 4 | 100.00 |
54 logic unused_req_chk;
55 unreachable assign unused_req_chk = req_chk_i;
56
57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0)
58
59 // this case is basically just a bypass
60 if (N == 1) begin : gen_degenerate_case
61
62 assign valid_o = req_i[0];
63 assign data_o = data_i[0];
64 assign gnt_o[0] = valid_o & ready_i;
65 assign idx_o = '0;
66
67 end else begin : gen_normal_case
68
69 logic [N-1:0] masked_req;
70 logic [N-1:0] ppc_out;
71 logic [N-1:0] arb_req;
72 logic [N-1:0] mask, mask_next;
73 logic [N-1:0] winner;
74
75 1/1 assign masked_req = mask & req_i;
Tests: T1 T2 T3
76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i;
Tests: T1 T2 T3
77
78 // PPC
79 // Even below code looks O(n) but DC optimizes it to O(log(N))
80 // Using Parallel Prefix Computation
81 always_comb begin
82 1/1 ppc_out[0] = arb_req[0];
Tests: T1 T2 T3
83 1/1 for (int i = 1 ; i < N ; i++) begin
Tests: T1 T2 T3
84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i];
Tests: T1 T2 T3
85 end
86 end
87
88 // Grant Generation: Leading-One detector
89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
90 1/1 assign gnt_o = (ready_i) ? winner : '0;
Tests: T1 T2 T3
91
92 1/1 assign valid_o = |req_i;
Tests: T1 T2 T3
93 // Mask Generation
94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
95 always_ff @(posedge clk_i or negedge rst_ni) begin
96 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
97 1/1 mask <= '0;
Tests: T1 T2 T3
98 1/1 end else if (valid_o && ready_i) begin
Tests: T3 T4 T12
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T4 T12 T16
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T3 T4 T12
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 unreachable mask <= ppc_out;
104 end
MISSING_ELSE
105 end
106
107 if (EnDataPort == 1) begin: gen_datapath
108 always_comb begin
109 1/1 data_o = '0;
Tests: T1 T2 T3
110 1/1 for (int i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
111 1/1 if (winner[i]) begin
Tests: T1 T2 T3
112 1/1 data_o = data_i[i];
Tests: T4 T12 T16
113 end
MISSING_ELSE
114 end
115 end
116 end else begin: gen_nodatapath
117 assign data_o = '1;
118 // The following signal is used to avoid possible lint errors.
119 logic [DW-1:0] unused_data [N];
120 assign unused_data = data_i;
121 end
122
123 always_comb begin
124 1/1 idx_o = '0;
Tests: T1 T2 T3
125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
126 1/1 if (winner[i]) begin
Tests: T1 T2 T3
127 1/1 idx_o = i[IdxW-1:0];
Tests: T4 T12 T16
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 | T4,T12,T16 |
1 | 0 | Covered | T4,T12,T16 |
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,T4,T12 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T4,T12,T16 |
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 | T46,T58,T53 |
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 | T46,T58,T53 |
1 | 0 | Covered | T46,T58,T53 |
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 | T6,T13,T14 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T46,T58,T53 |
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 | T4,T5,T10 |
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 | T4,T5,T10 |
1 | 0 | Covered | T4,T5,T6 |
LINE 90
EXPRESSION (ready_i ? gen_normal_case.winner : '0)
---1---
-1- | Status | Tests |
0 | Unreachable | |
1 | Covered | T1,T2,T3 |
LINE 98
EXPRESSION (valid_o && ready_i)
---1--- ---2---
-1- | -2- | Status | Tests |
0 | 1 | Covered | T1,T2,T3 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T4,T5,T6 |
LINE 101
EXPRESSION (valid_o && ((!ready_i)))
---1--- ------2-----
-1- | -2- | Status | Tests |
0 | 1 | Unreachable | |
1 | 0 | Not Covered | |
1 | 1 | Unreachable | |
Branch Coverage for Module :
prim_arbiter_ppc
| Line No. | Total | Covered | Percent |
Branches |
|
10 |
10 |
100.00 |
TERNARY |
76 |
2 |
2 |
100.00 |
TERNARY |
90 |
1 |
1 |
100.00 |
IF |
96 |
3 |
3 |
100.00 |
IF |
126 |
2 |
2 |
100.00 |
IF |
111 |
2 |
2 |
100.00 |
76 assign arb_req = (|masked_req) ? masked_req : req_i;
-1-
==>
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T4,T5,T10 |
0 |
Covered |
T1,T2,T3 |
90 assign gnt_o = (ready_i) ? winner : '0;
-1-
==>
==> (Unreachable)
Branches:
-1- | Status | Tests |
1 |
Covered |
T1,T2,T3 |
0 |
Unreachable |
|
96 if (!rst_ni) begin
-1-
97 mask <= '0;
==>
98 end else if (valid_o && ready_i) begin
-2-
99 // Latch only when requests accepted
100 mask <= mask_next;
==>
101 end else if (valid_o && !ready_i) begin
-3-
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 mask <= ppc_out;
==> (Unreachable)
104 end
MISSING_ELSE
==>
Branches:
-1- | -2- | -3- | Status | Tests |
1 |
- |
- |
Covered |
T1,T2,T3 |
0 |
1 |
- |
Covered |
T4,T5,T6 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T1,T3,T4 |
126 if (winner[i]) begin
-1-
127 idx_o = i[IdxW-1:0];
==>
128 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T4,T5,T6 |
0 |
Covered |
T1,T2,T3 |
111 if (winner[i]) begin
-1-
112 data_o = data_i[i];
==>
113 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T4,T5,T6 |
0 |
Covered |
T1,T2,T3 |
Assert Coverage for Module :
prim_arbiter_ppc
Assertion Details
CheckHotOne_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
757075442 |
603612067 |
0 |
0 |
T1 |
1596 |
1540 |
0 |
0 |
T2 |
1231 |
1140 |
0 |
0 |
T3 |
3484 |
3418 |
0 |
0 |
T4 |
5620 |
5545 |
0 |
0 |
T5 |
3191 |
3103 |
0 |
0 |
T6 |
21634 |
15308 |
0 |
0 |
T7 |
1029 |
943 |
0 |
0 |
T8 |
1202 |
1148 |
0 |
0 |
T9 |
1093 |
1014 |
0 |
0 |
T10 |
2692 |
2631 |
0 |
0 |
T12 |
14438 |
6776 |
0 |
0 |
T13 |
64 |
32 |
0 |
0 |
T14 |
21268 |
10634 |
0 |
0 |
T15 |
720 |
360 |
0 |
0 |
T16 |
368 |
184 |
0 |
0 |
T17 |
34974 |
17264 |
0 |
0 |
T18 |
40776 |
19990 |
0 |
0 |
T19 |
19830 |
0 |
0 |
0 |
T20 |
55532 |
0 |
0 |
0 |
T27 |
0 |
144 |
0 |
0 |
T28 |
0 |
83904 |
0 |
0 |
T29 |
0 |
3600 |
0 |
0 |
T30 |
0 |
74472 |
0 |
0 |
CheckNGreaterZero_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
2925 |
2925 |
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 |
757075442 |
3887928 |
0 |
0 |
T4 |
5620 |
292 |
0 |
0 |
T5 |
3191 |
200 |
0 |
0 |
T6 |
15394 |
832 |
0 |
0 |
T7 |
1029 |
0 |
0 |
0 |
T8 |
1202 |
0 |
0 |
0 |
T9 |
1093 |
0 |
0 |
0 |
T10 |
2692 |
200 |
0 |
0 |
T11 |
5867 |
0 |
0 |
0 |
T12 |
67763 |
234 |
0 |
0 |
T13 |
2812 |
832 |
0 |
0 |
T14 |
10634 |
832 |
0 |
0 |
T15 |
360 |
0 |
0 |
0 |
T16 |
184 |
8 |
0 |
0 |
T17 |
17487 |
0 |
0 |
0 |
T18 |
20388 |
832 |
0 |
0 |
T19 |
19830 |
832 |
0 |
0 |
T29 |
0 |
147 |
0 |
0 |
T42 |
0 |
1574 |
0 |
0 |
T46 |
141556 |
2826 |
0 |
0 |
T47 |
0 |
2573 |
0 |
0 |
T48 |
0 |
1203 |
0 |
0 |
T50 |
0 |
49 |
0 |
0 |
T53 |
0 |
997 |
0 |
0 |
T57 |
0 |
7 |
0 |
0 |
T58 |
0 |
3011 |
0 |
0 |
T76 |
792 |
0 |
0 |
0 |
T77 |
14326 |
0 |
0 |
0 |
T78 |
1264 |
66 |
0 |
0 |
T79 |
49287 |
0 |
0 |
0 |
T82 |
0 |
5 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
757075442 |
3887928 |
0 |
0 |
T4 |
5620 |
292 |
0 |
0 |
T5 |
3191 |
200 |
0 |
0 |
T6 |
15394 |
832 |
0 |
0 |
T7 |
1029 |
0 |
0 |
0 |
T8 |
1202 |
0 |
0 |
0 |
T9 |
1093 |
0 |
0 |
0 |
T10 |
2692 |
200 |
0 |
0 |
T11 |
5867 |
0 |
0 |
0 |
T12 |
67763 |
234 |
0 |
0 |
T13 |
2812 |
832 |
0 |
0 |
T14 |
10634 |
832 |
0 |
0 |
T15 |
360 |
0 |
0 |
0 |
T16 |
184 |
8 |
0 |
0 |
T17 |
17487 |
0 |
0 |
0 |
T18 |
20388 |
832 |
0 |
0 |
T19 |
19830 |
832 |
0 |
0 |
T29 |
0 |
147 |
0 |
0 |
T42 |
0 |
1574 |
0 |
0 |
T46 |
141556 |
2826 |
0 |
0 |
T47 |
0 |
2573 |
0 |
0 |
T48 |
0 |
1203 |
0 |
0 |
T50 |
0 |
49 |
0 |
0 |
T53 |
0 |
997 |
0 |
0 |
T57 |
0 |
7 |
0 |
0 |
T58 |
0 |
3011 |
0 |
0 |
T76 |
792 |
0 |
0 |
0 |
T77 |
14326 |
0 |
0 |
0 |
T78 |
1264 |
66 |
0 |
0 |
T79 |
49287 |
0 |
0 |
0 |
T82 |
0 |
5 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
757075442 |
603612067 |
0 |
0 |
T1 |
1596 |
1540 |
0 |
0 |
T2 |
1231 |
1140 |
0 |
0 |
T3 |
3484 |
3418 |
0 |
0 |
T4 |
5620 |
5545 |
0 |
0 |
T5 |
3191 |
3103 |
0 |
0 |
T6 |
21634 |
15308 |
0 |
0 |
T7 |
1029 |
943 |
0 |
0 |
T8 |
1202 |
1148 |
0 |
0 |
T9 |
1093 |
1014 |
0 |
0 |
T10 |
2692 |
2631 |
0 |
0 |
T12 |
14438 |
6776 |
0 |
0 |
T13 |
64 |
32 |
0 |
0 |
T14 |
21268 |
10634 |
0 |
0 |
T15 |
720 |
360 |
0 |
0 |
T16 |
368 |
184 |
0 |
0 |
T17 |
34974 |
17264 |
0 |
0 |
T18 |
40776 |
19990 |
0 |
0 |
T19 |
19830 |
0 |
0 |
0 |
T20 |
55532 |
0 |
0 |
0 |
T27 |
0 |
144 |
0 |
0 |
T28 |
0 |
83904 |
0 |
0 |
T29 |
0 |
3600 |
0 |
0 |
T30 |
0 |
74472 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
757075442 |
603612067 |
0 |
0 |
T1 |
1596 |
1540 |
0 |
0 |
T2 |
1231 |
1140 |
0 |
0 |
T3 |
3484 |
3418 |
0 |
0 |
T4 |
5620 |
5545 |
0 |
0 |
T5 |
3191 |
3103 |
0 |
0 |
T6 |
21634 |
15308 |
0 |
0 |
T7 |
1029 |
943 |
0 |
0 |
T8 |
1202 |
1148 |
0 |
0 |
T9 |
1093 |
1014 |
0 |
0 |
T10 |
2692 |
2631 |
0 |
0 |
T12 |
14438 |
6776 |
0 |
0 |
T13 |
64 |
32 |
0 |
0 |
T14 |
21268 |
10634 |
0 |
0 |
T15 |
720 |
360 |
0 |
0 |
T16 |
368 |
184 |
0 |
0 |
T17 |
34974 |
17264 |
0 |
0 |
T18 |
40776 |
19990 |
0 |
0 |
T19 |
19830 |
0 |
0 |
0 |
T20 |
55532 |
0 |
0 |
0 |
T27 |
0 |
144 |
0 |
0 |
T28 |
0 |
83904 |
0 |
0 |
T29 |
0 |
3600 |
0 |
0 |
T30 |
0 |
74472 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
757075442 |
3887928 |
0 |
0 |
T4 |
5620 |
292 |
0 |
0 |
T5 |
3191 |
200 |
0 |
0 |
T6 |
15394 |
832 |
0 |
0 |
T7 |
1029 |
0 |
0 |
0 |
T8 |
1202 |
0 |
0 |
0 |
T9 |
1093 |
0 |
0 |
0 |
T10 |
2692 |
200 |
0 |
0 |
T11 |
5867 |
0 |
0 |
0 |
T12 |
67763 |
234 |
0 |
0 |
T13 |
2812 |
832 |
0 |
0 |
T14 |
10634 |
832 |
0 |
0 |
T15 |
360 |
0 |
0 |
0 |
T16 |
184 |
8 |
0 |
0 |
T17 |
17487 |
0 |
0 |
0 |
T18 |
20388 |
832 |
0 |
0 |
T19 |
19830 |
832 |
0 |
0 |
T29 |
0 |
147 |
0 |
0 |
T42 |
0 |
1574 |
0 |
0 |
T46 |
141556 |
2826 |
0 |
0 |
T47 |
0 |
2573 |
0 |
0 |
T48 |
0 |
1203 |
0 |
0 |
T50 |
0 |
49 |
0 |
0 |
T53 |
0 |
997 |
0 |
0 |
T57 |
0 |
7 |
0 |
0 |
T58 |
0 |
3011 |
0 |
0 |
T76 |
792 |
0 |
0 |
0 |
T77 |
14326 |
0 |
0 |
0 |
T78 |
1264 |
66 |
0 |
0 |
T79 |
49287 |
0 |
0 |
0 |
T82 |
0 |
5 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
757075442 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
757075442 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
757075442 |
3887928 |
0 |
0 |
T4 |
5620 |
292 |
0 |
0 |
T5 |
3191 |
200 |
0 |
0 |
T6 |
15394 |
832 |
0 |
0 |
T7 |
1029 |
0 |
0 |
0 |
T8 |
1202 |
0 |
0 |
0 |
T9 |
1093 |
0 |
0 |
0 |
T10 |
2692 |
200 |
0 |
0 |
T11 |
5867 |
0 |
0 |
0 |
T12 |
67763 |
234 |
0 |
0 |
T13 |
2812 |
832 |
0 |
0 |
T14 |
10634 |
832 |
0 |
0 |
T15 |
360 |
0 |
0 |
0 |
T16 |
184 |
8 |
0 |
0 |
T17 |
17487 |
0 |
0 |
0 |
T18 |
20388 |
832 |
0 |
0 |
T19 |
19830 |
832 |
0 |
0 |
T29 |
0 |
147 |
0 |
0 |
T42 |
0 |
1574 |
0 |
0 |
T46 |
141556 |
2826 |
0 |
0 |
T47 |
0 |
2573 |
0 |
0 |
T48 |
0 |
1203 |
0 |
0 |
T50 |
0 |
49 |
0 |
0 |
T53 |
0 |
997 |
0 |
0 |
T57 |
0 |
7 |
0 |
0 |
T58 |
0 |
3011 |
0 |
0 |
T76 |
792 |
0 |
0 |
0 |
T77 |
14326 |
0 |
0 |
0 |
T78 |
1264 |
66 |
0 |
0 |
T79 |
49287 |
0 |
0 |
0 |
T82 |
0 |
5 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
757075442 |
3887928 |
0 |
0 |
T4 |
5620 |
292 |
0 |
0 |
T5 |
3191 |
200 |
0 |
0 |
T6 |
15394 |
832 |
0 |
0 |
T7 |
1029 |
0 |
0 |
0 |
T8 |
1202 |
0 |
0 |
0 |
T9 |
1093 |
0 |
0 |
0 |
T10 |
2692 |
200 |
0 |
0 |
T11 |
5867 |
0 |
0 |
0 |
T12 |
67763 |
234 |
0 |
0 |
T13 |
2812 |
832 |
0 |
0 |
T14 |
10634 |
832 |
0 |
0 |
T15 |
360 |
0 |
0 |
0 |
T16 |
184 |
8 |
0 |
0 |
T17 |
17487 |
0 |
0 |
0 |
T18 |
20388 |
832 |
0 |
0 |
T19 |
19830 |
832 |
0 |
0 |
T29 |
0 |
147 |
0 |
0 |
T42 |
0 |
1574 |
0 |
0 |
T46 |
141556 |
2826 |
0 |
0 |
T47 |
0 |
2573 |
0 |
0 |
T48 |
0 |
1203 |
0 |
0 |
T50 |
0 |
49 |
0 |
0 |
T53 |
0 |
997 |
0 |
0 |
T57 |
0 |
7 |
0 |
0 |
T58 |
0 |
3011 |
0 |
0 |
T76 |
792 |
0 |
0 |
0 |
T77 |
14326 |
0 |
0 |
0 |
T78 |
1264 |
66 |
0 |
0 |
T79 |
49287 |
0 |
0 |
0 |
T82 |
0 |
5 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
757075442 |
3887928 |
0 |
0 |
T4 |
5620 |
292 |
0 |
0 |
T5 |
3191 |
200 |
0 |
0 |
T6 |
15394 |
832 |
0 |
0 |
T7 |
1029 |
0 |
0 |
0 |
T8 |
1202 |
0 |
0 |
0 |
T9 |
1093 |
0 |
0 |
0 |
T10 |
2692 |
200 |
0 |
0 |
T11 |
5867 |
0 |
0 |
0 |
T12 |
67763 |
234 |
0 |
0 |
T13 |
2812 |
832 |
0 |
0 |
T14 |
10634 |
832 |
0 |
0 |
T15 |
360 |
0 |
0 |
0 |
T16 |
184 |
8 |
0 |
0 |
T17 |
17487 |
0 |
0 |
0 |
T18 |
20388 |
832 |
0 |
0 |
T19 |
19830 |
832 |
0 |
0 |
T29 |
0 |
147 |
0 |
0 |
T42 |
0 |
1574 |
0 |
0 |
T46 |
141556 |
2826 |
0 |
0 |
T47 |
0 |
2573 |
0 |
0 |
T48 |
0 |
1203 |
0 |
0 |
T50 |
0 |
49 |
0 |
0 |
T53 |
0 |
997 |
0 |
0 |
T57 |
0 |
7 |
0 |
0 |
T58 |
0 |
3011 |
0 |
0 |
T76 |
792 |
0 |
0 |
0 |
T77 |
14326 |
0 |
0 |
0 |
T78 |
1264 |
66 |
0 |
0 |
T79 |
49287 |
0 |
0 |
0 |
T82 |
0 |
5 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
757075442 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
757075442 |
1 |
0 |
975 |
T83 |
759259 |
1 |
0 |
1 |
T84 |
23005 |
0 |
0 |
1 |
T85 |
486318 |
0 |
0 |
1 |
T86 |
14254 |
0 |
0 |
1 |
T87 |
307633 |
0 |
0 |
1 |
T88 |
293653 |
0 |
0 |
1 |
T89 |
1262 |
0 |
0 |
1 |
T90 |
213521 |
0 |
0 |
1 |
T91 |
1756 |
0 |
0 |
1 |
T92 |
20068 |
0 |
0 |
1 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
757075442 |
603612067 |
0 |
0 |
T1 |
1596 |
1540 |
0 |
0 |
T2 |
1231 |
1140 |
0 |
0 |
T3 |
3484 |
3418 |
0 |
0 |
T4 |
5620 |
5545 |
0 |
0 |
T5 |
3191 |
3103 |
0 |
0 |
T6 |
21634 |
15308 |
0 |
0 |
T7 |
1029 |
943 |
0 |
0 |
T8 |
1202 |
1148 |
0 |
0 |
T9 |
1093 |
1014 |
0 |
0 |
T10 |
2692 |
2631 |
0 |
0 |
T12 |
14438 |
6776 |
0 |
0 |
T13 |
64 |
32 |
0 |
0 |
T14 |
21268 |
10634 |
0 |
0 |
T15 |
720 |
360 |
0 |
0 |
T16 |
368 |
184 |
0 |
0 |
T17 |
34974 |
17264 |
0 |
0 |
T18 |
40776 |
19990 |
0 |
0 |
T19 |
19830 |
0 |
0 |
0 |
T20 |
55532 |
0 |
0 |
0 |
T27 |
0 |
144 |
0 |
0 |
T28 |
0 |
83904 |
0 |
0 |
T29 |
0 |
3600 |
0 |
0 |
T30 |
0 |
74472 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
757075442 |
3887928 |
0 |
0 |
T4 |
5620 |
292 |
0 |
0 |
T5 |
3191 |
200 |
0 |
0 |
T6 |
15394 |
832 |
0 |
0 |
T7 |
1029 |
0 |
0 |
0 |
T8 |
1202 |
0 |
0 |
0 |
T9 |
1093 |
0 |
0 |
0 |
T10 |
2692 |
200 |
0 |
0 |
T11 |
5867 |
0 |
0 |
0 |
T12 |
67763 |
234 |
0 |
0 |
T13 |
2812 |
832 |
0 |
0 |
T14 |
10634 |
832 |
0 |
0 |
T15 |
360 |
0 |
0 |
0 |
T16 |
184 |
8 |
0 |
0 |
T17 |
17487 |
0 |
0 |
0 |
T18 |
20388 |
832 |
0 |
0 |
T19 |
19830 |
832 |
0 |
0 |
T29 |
0 |
147 |
0 |
0 |
T42 |
0 |
1574 |
0 |
0 |
T46 |
141556 |
2826 |
0 |
0 |
T47 |
0 |
2573 |
0 |
0 |
T48 |
0 |
1203 |
0 |
0 |
T50 |
0 |
49 |
0 |
0 |
T53 |
0 |
997 |
0 |
0 |
T57 |
0 |
7 |
0 |
0 |
T58 |
0 |
3011 |
0 |
0 |
T76 |
792 |
0 |
0 |
0 |
T77 |
14326 |
0 |
0 |
0 |
T78 |
1264 |
66 |
0 |
0 |
T79 |
49287 |
0 |
0 |
0 |
T82 |
0 |
5 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_spi_tpm.u_arbiter.gen_arb_ppc.u_reqarb
| Line No. | Total | Covered | Percent |
TOTAL | | 22 | 22 | 100.00 |
CONT_ASSIGN | 55 | 0 | 0 | |
CONT_ASSIGN | 75 | 1 | 1 | 100.00 |
CONT_ASSIGN | 76 | 1 | 1 | 100.00 |
ALWAYS | 82 | 3 | 3 | 100.00 |
CONT_ASSIGN | 89 | 1 | 1 | 100.00 |
CONT_ASSIGN | 90 | 1 | 1 | 100.00 |
CONT_ASSIGN | 92 | 1 | 1 | 100.00 |
CONT_ASSIGN | 94 | 1 | 1 | 100.00 |
ALWAYS | 96 | 5 | 5 | 100.00 |
ALWAYS | 109 | 4 | 4 | 100.00 |
ALWAYS | 124 | 4 | 4 | 100.00 |
54 logic unused_req_chk;
55 unreachable assign unused_req_chk = req_chk_i;
56
57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0)
58
59 // this case is basically just a bypass
60 if (N == 1) begin : gen_degenerate_case
61
62 assign valid_o = req_i[0];
63 assign data_o = data_i[0];
64 assign gnt_o[0] = valid_o & ready_i;
65 assign idx_o = '0;
66
67 end else begin : gen_normal_case
68
69 logic [N-1:0] masked_req;
70 logic [N-1:0] ppc_out;
71 logic [N-1:0] arb_req;
72 logic [N-1:0] mask, mask_next;
73 logic [N-1:0] winner;
74
75 1/1 assign masked_req = mask & req_i;
Tests: T1 T2 T3
76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i;
Tests: T1 T2 T3
77
78 // PPC
79 // Even below code looks O(n) but DC optimizes it to O(log(N))
80 // Using Parallel Prefix Computation
81 always_comb begin
82 1/1 ppc_out[0] = arb_req[0];
Tests: T1 T2 T3
83 1/1 for (int i = 1 ; i < N ; i++) begin
Tests: T1 T2 T3
84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i];
Tests: T1 T2 T3
85 end
86 end
87
88 // Grant Generation: Leading-One detector
89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
90 1/1 assign gnt_o = (ready_i) ? winner : '0;
Tests: T1 T2 T3
91
92 1/1 assign valid_o = |req_i;
Tests: T1 T2 T3
93 // Mask Generation
94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
95 always_ff @(posedge clk_i or negedge rst_ni) begin
96 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
97 1/1 mask <= '0;
Tests: T1 T2 T3
98 1/1 end else if (valid_o && ready_i) begin
Tests: T3 T4 T12
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T4 T12 T16
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T3 T4 T12
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 unreachable mask <= ppc_out;
104 end
MISSING_ELSE
105 end
106
107 if (EnDataPort == 1) begin: gen_datapath
108 always_comb begin
109 1/1 data_o = '0;
Tests: T1 T2 T3
110 1/1 for (int i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
111 1/1 if (winner[i]) begin
Tests: T1 T2 T3
112 1/1 data_o = data_i[i];
Tests: T4 T12 T16
113 end
MISSING_ELSE
114 end
115 end
116 end else begin: gen_nodatapath
117 assign data_o = '1;
118 // The following signal is used to avoid possible lint errors.
119 logic [DW-1:0] unused_data [N];
120 assign unused_data = data_i;
121 end
122
123 always_comb begin
124 1/1 idx_o = '0;
Tests: T1 T2 T3
125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
126 1/1 if (winner[i]) begin
Tests: T1 T2 T3
127 1/1 idx_o = i[IdxW-1:0];
Tests: T4 T12 T16
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 | T4,T12,T16 |
1 | 0 | Covered | T4,T12,T16 |
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,T4,T12 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T4,T12,T16 |
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 |
T4,T12,T16 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T3,T4,T12 |
126 if (winner[i]) begin
-1-
127 idx_o = i[IdxW-1:0];
==>
128 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T4,T12,T16 |
0 |
Covered |
T1,T2,T3 |
111 if (winner[i]) begin
-1-
112 data_o = data_i[i];
==>
113 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T4,T12,T16 |
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 |
151971634 |
28808899 |
0 |
0 |
T3 |
576 |
576 |
0 |
0 |
T4 |
2656 |
2656 |
0 |
0 |
T6 |
6240 |
0 |
0 |
0 |
T12 |
7219 |
6776 |
0 |
0 |
T13 |
32 |
0 |
0 |
0 |
T14 |
10634 |
0 |
0 |
0 |
T15 |
360 |
360 |
0 |
0 |
T16 |
184 |
184 |
0 |
0 |
T17 |
17487 |
17264 |
0 |
0 |
T18 |
20388 |
0 |
0 |
0 |
T27 |
0 |
144 |
0 |
0 |
T28 |
0 |
83904 |
0 |
0 |
T29 |
0 |
3600 |
0 |
0 |
T30 |
0 |
74472 |
0 |
0 |
CheckNGreaterZero_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
975 |
975 |
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 |
151971634 |
620086 |
0 |
0 |
T4 |
2656 |
223 |
0 |
0 |
T6 |
6240 |
0 |
0 |
0 |
T12 |
7219 |
170 |
0 |
0 |
T13 |
32 |
0 |
0 |
0 |
T14 |
10634 |
0 |
0 |
0 |
T15 |
360 |
0 |
0 |
0 |
T16 |
184 |
6 |
0 |
0 |
T17 |
17487 |
0 |
0 |
0 |
T18 |
20388 |
0 |
0 |
0 |
T19 |
19830 |
0 |
0 |
0 |
T29 |
0 |
147 |
0 |
0 |
T46 |
0 |
1040 |
0 |
0 |
T47 |
0 |
2573 |
0 |
0 |
T48 |
0 |
1203 |
0 |
0 |
T50 |
0 |
49 |
0 |
0 |
T58 |
0 |
2237 |
0 |
0 |
T78 |
0 |
66 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
620086 |
0 |
0 |
T4 |
2656 |
223 |
0 |
0 |
T6 |
6240 |
0 |
0 |
0 |
T12 |
7219 |
170 |
0 |
0 |
T13 |
32 |
0 |
0 |
0 |
T14 |
10634 |
0 |
0 |
0 |
T15 |
360 |
0 |
0 |
0 |
T16 |
184 |
6 |
0 |
0 |
T17 |
17487 |
0 |
0 |
0 |
T18 |
20388 |
0 |
0 |
0 |
T19 |
19830 |
0 |
0 |
0 |
T29 |
0 |
147 |
0 |
0 |
T46 |
0 |
1040 |
0 |
0 |
T47 |
0 |
2573 |
0 |
0 |
T48 |
0 |
1203 |
0 |
0 |
T50 |
0 |
49 |
0 |
0 |
T58 |
0 |
2237 |
0 |
0 |
T78 |
0 |
66 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
28808899 |
0 |
0 |
T3 |
576 |
576 |
0 |
0 |
T4 |
2656 |
2656 |
0 |
0 |
T6 |
6240 |
0 |
0 |
0 |
T12 |
7219 |
6776 |
0 |
0 |
T13 |
32 |
0 |
0 |
0 |
T14 |
10634 |
0 |
0 |
0 |
T15 |
360 |
360 |
0 |
0 |
T16 |
184 |
184 |
0 |
0 |
T17 |
17487 |
17264 |
0 |
0 |
T18 |
20388 |
0 |
0 |
0 |
T27 |
0 |
144 |
0 |
0 |
T28 |
0 |
83904 |
0 |
0 |
T29 |
0 |
3600 |
0 |
0 |
T30 |
0 |
74472 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
28808899 |
0 |
0 |
T3 |
576 |
576 |
0 |
0 |
T4 |
2656 |
2656 |
0 |
0 |
T6 |
6240 |
0 |
0 |
0 |
T12 |
7219 |
6776 |
0 |
0 |
T13 |
32 |
0 |
0 |
0 |
T14 |
10634 |
0 |
0 |
0 |
T15 |
360 |
360 |
0 |
0 |
T16 |
184 |
184 |
0 |
0 |
T17 |
17487 |
17264 |
0 |
0 |
T18 |
20388 |
0 |
0 |
0 |
T27 |
0 |
144 |
0 |
0 |
T28 |
0 |
83904 |
0 |
0 |
T29 |
0 |
3600 |
0 |
0 |
T30 |
0 |
74472 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
620086 |
0 |
0 |
T4 |
2656 |
223 |
0 |
0 |
T6 |
6240 |
0 |
0 |
0 |
T12 |
7219 |
170 |
0 |
0 |
T13 |
32 |
0 |
0 |
0 |
T14 |
10634 |
0 |
0 |
0 |
T15 |
360 |
0 |
0 |
0 |
T16 |
184 |
6 |
0 |
0 |
T17 |
17487 |
0 |
0 |
0 |
T18 |
20388 |
0 |
0 |
0 |
T19 |
19830 |
0 |
0 |
0 |
T29 |
0 |
147 |
0 |
0 |
T46 |
0 |
1040 |
0 |
0 |
T47 |
0 |
2573 |
0 |
0 |
T48 |
0 |
1203 |
0 |
0 |
T50 |
0 |
49 |
0 |
0 |
T58 |
0 |
2237 |
0 |
0 |
T78 |
0 |
66 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
620086 |
0 |
0 |
T4 |
2656 |
223 |
0 |
0 |
T6 |
6240 |
0 |
0 |
0 |
T12 |
7219 |
170 |
0 |
0 |
T13 |
32 |
0 |
0 |
0 |
T14 |
10634 |
0 |
0 |
0 |
T15 |
360 |
0 |
0 |
0 |
T16 |
184 |
6 |
0 |
0 |
T17 |
17487 |
0 |
0 |
0 |
T18 |
20388 |
0 |
0 |
0 |
T19 |
19830 |
0 |
0 |
0 |
T29 |
0 |
147 |
0 |
0 |
T46 |
0 |
1040 |
0 |
0 |
T47 |
0 |
2573 |
0 |
0 |
T48 |
0 |
1203 |
0 |
0 |
T50 |
0 |
49 |
0 |
0 |
T58 |
0 |
2237 |
0 |
0 |
T78 |
0 |
66 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
620086 |
0 |
0 |
T4 |
2656 |
223 |
0 |
0 |
T6 |
6240 |
0 |
0 |
0 |
T12 |
7219 |
170 |
0 |
0 |
T13 |
32 |
0 |
0 |
0 |
T14 |
10634 |
0 |
0 |
0 |
T15 |
360 |
0 |
0 |
0 |
T16 |
184 |
6 |
0 |
0 |
T17 |
17487 |
0 |
0 |
0 |
T18 |
20388 |
0 |
0 |
0 |
T19 |
19830 |
0 |
0 |
0 |
T29 |
0 |
147 |
0 |
0 |
T46 |
0 |
1040 |
0 |
0 |
T47 |
0 |
2573 |
0 |
0 |
T48 |
0 |
1203 |
0 |
0 |
T50 |
0 |
49 |
0 |
0 |
T58 |
0 |
2237 |
0 |
0 |
T78 |
0 |
66 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
620086 |
0 |
0 |
T4 |
2656 |
223 |
0 |
0 |
T6 |
6240 |
0 |
0 |
0 |
T12 |
7219 |
170 |
0 |
0 |
T13 |
32 |
0 |
0 |
0 |
T14 |
10634 |
0 |
0 |
0 |
T15 |
360 |
0 |
0 |
0 |
T16 |
184 |
6 |
0 |
0 |
T17 |
17487 |
0 |
0 |
0 |
T18 |
20388 |
0 |
0 |
0 |
T19 |
19830 |
0 |
0 |
0 |
T29 |
0 |
147 |
0 |
0 |
T46 |
0 |
1040 |
0 |
0 |
T47 |
0 |
2573 |
0 |
0 |
T48 |
0 |
1203 |
0 |
0 |
T50 |
0 |
49 |
0 |
0 |
T58 |
0 |
2237 |
0 |
0 |
T78 |
0 |
66 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
0 |
0 |
0 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
28808899 |
0 |
0 |
T3 |
576 |
576 |
0 |
0 |
T4 |
2656 |
2656 |
0 |
0 |
T6 |
6240 |
0 |
0 |
0 |
T12 |
7219 |
6776 |
0 |
0 |
T13 |
32 |
0 |
0 |
0 |
T14 |
10634 |
0 |
0 |
0 |
T15 |
360 |
360 |
0 |
0 |
T16 |
184 |
184 |
0 |
0 |
T17 |
17487 |
17264 |
0 |
0 |
T18 |
20388 |
0 |
0 |
0 |
T27 |
0 |
144 |
0 |
0 |
T28 |
0 |
83904 |
0 |
0 |
T29 |
0 |
3600 |
0 |
0 |
T30 |
0 |
74472 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
620086 |
0 |
0 |
T4 |
2656 |
223 |
0 |
0 |
T6 |
6240 |
0 |
0 |
0 |
T12 |
7219 |
170 |
0 |
0 |
T13 |
32 |
0 |
0 |
0 |
T14 |
10634 |
0 |
0 |
0 |
T15 |
360 |
0 |
0 |
0 |
T16 |
184 |
6 |
0 |
0 |
T17 |
17487 |
0 |
0 |
0 |
T18 |
20388 |
0 |
0 |
0 |
T19 |
19830 |
0 |
0 |
0 |
T29 |
0 |
147 |
0 |
0 |
T46 |
0 |
1040 |
0 |
0 |
T47 |
0 |
2573 |
0 |
0 |
T48 |
0 |
1203 |
0 |
0 |
T50 |
0 |
49 |
0 |
0 |
T58 |
0 |
2237 |
0 |
0 |
T78 |
0 |
66 |
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: T6 T13 T14
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T46 T58 T53
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T6 T13 T14
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: T46 T58 T53
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: T46 T58 T53
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 | T46,T58,T53 |
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 | T46,T58,T53 |
1 | 0 | Covered | T46,T58,T53 |
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 | T6,T13,T14 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T46,T58,T53 |
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 |
T46,T58,T53 |
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 |
T46,T58,T53 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T6,T13,T14 |
126 if (winner[i]) begin
-1-
127 idx_o = i[IdxW-1:0];
==>
128 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T46,T58,T53 |
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 |
T46,T58,T53 |
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 |
151971634 |
121758958 |
0 |
0 |
T6 |
6240 |
6240 |
0 |
0 |
T12 |
7219 |
0 |
0 |
0 |
T13 |
32 |
32 |
0 |
0 |
T14 |
10634 |
10634 |
0 |
0 |
T15 |
360 |
0 |
0 |
0 |
T16 |
184 |
0 |
0 |
0 |
T17 |
17487 |
0 |
0 |
0 |
T18 |
20388 |
19990 |
0 |
0 |
T19 |
19830 |
19536 |
0 |
0 |
T20 |
55532 |
55232 |
0 |
0 |
T21 |
0 |
24272 |
0 |
0 |
T23 |
0 |
34464 |
0 |
0 |
T24 |
0 |
62324 |
0 |
0 |
T25 |
0 |
18795 |
0 |
0 |
CheckNGreaterZero_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
975 |
975 |
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 |
151971634 |
896484 |
0 |
0 |
T42 |
0 |
1574 |
0 |
0 |
T46 |
141556 |
1786 |
0 |
0 |
T47 |
62477 |
0 |
0 |
0 |
T53 |
0 |
997 |
0 |
0 |
T54 |
0 |
5833 |
0 |
0 |
T55 |
0 |
7526 |
0 |
0 |
T57 |
0 |
7 |
0 |
0 |
T58 |
77204 |
774 |
0 |
0 |
T69 |
0 |
10897 |
0 |
0 |
T70 |
42231 |
0 |
0 |
0 |
T76 |
792 |
0 |
0 |
0 |
T77 |
14326 |
0 |
0 |
0 |
T78 |
1264 |
0 |
0 |
0 |
T79 |
49287 |
0 |
0 |
0 |
T80 |
14400 |
0 |
0 |
0 |
T81 |
53721 |
0 |
0 |
0 |
T82 |
0 |
5 |
0 |
0 |
T93 |
0 |
4230 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
896484 |
0 |
0 |
T42 |
0 |
1574 |
0 |
0 |
T46 |
141556 |
1786 |
0 |
0 |
T47 |
62477 |
0 |
0 |
0 |
T53 |
0 |
997 |
0 |
0 |
T54 |
0 |
5833 |
0 |
0 |
T55 |
0 |
7526 |
0 |
0 |
T57 |
0 |
7 |
0 |
0 |
T58 |
77204 |
774 |
0 |
0 |
T69 |
0 |
10897 |
0 |
0 |
T70 |
42231 |
0 |
0 |
0 |
T76 |
792 |
0 |
0 |
0 |
T77 |
14326 |
0 |
0 |
0 |
T78 |
1264 |
0 |
0 |
0 |
T79 |
49287 |
0 |
0 |
0 |
T80 |
14400 |
0 |
0 |
0 |
T81 |
53721 |
0 |
0 |
0 |
T82 |
0 |
5 |
0 |
0 |
T93 |
0 |
4230 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
121758958 |
0 |
0 |
T6 |
6240 |
6240 |
0 |
0 |
T12 |
7219 |
0 |
0 |
0 |
T13 |
32 |
32 |
0 |
0 |
T14 |
10634 |
10634 |
0 |
0 |
T15 |
360 |
0 |
0 |
0 |
T16 |
184 |
0 |
0 |
0 |
T17 |
17487 |
0 |
0 |
0 |
T18 |
20388 |
19990 |
0 |
0 |
T19 |
19830 |
19536 |
0 |
0 |
T20 |
55532 |
55232 |
0 |
0 |
T21 |
0 |
24272 |
0 |
0 |
T23 |
0 |
34464 |
0 |
0 |
T24 |
0 |
62324 |
0 |
0 |
T25 |
0 |
18795 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
121758958 |
0 |
0 |
T6 |
6240 |
6240 |
0 |
0 |
T12 |
7219 |
0 |
0 |
0 |
T13 |
32 |
32 |
0 |
0 |
T14 |
10634 |
10634 |
0 |
0 |
T15 |
360 |
0 |
0 |
0 |
T16 |
184 |
0 |
0 |
0 |
T17 |
17487 |
0 |
0 |
0 |
T18 |
20388 |
19990 |
0 |
0 |
T19 |
19830 |
19536 |
0 |
0 |
T20 |
55532 |
55232 |
0 |
0 |
T21 |
0 |
24272 |
0 |
0 |
T23 |
0 |
34464 |
0 |
0 |
T24 |
0 |
62324 |
0 |
0 |
T25 |
0 |
18795 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
896484 |
0 |
0 |
T42 |
0 |
1574 |
0 |
0 |
T46 |
141556 |
1786 |
0 |
0 |
T47 |
62477 |
0 |
0 |
0 |
T53 |
0 |
997 |
0 |
0 |
T54 |
0 |
5833 |
0 |
0 |
T55 |
0 |
7526 |
0 |
0 |
T57 |
0 |
7 |
0 |
0 |
T58 |
77204 |
774 |
0 |
0 |
T69 |
0 |
10897 |
0 |
0 |
T70 |
42231 |
0 |
0 |
0 |
T76 |
792 |
0 |
0 |
0 |
T77 |
14326 |
0 |
0 |
0 |
T78 |
1264 |
0 |
0 |
0 |
T79 |
49287 |
0 |
0 |
0 |
T80 |
14400 |
0 |
0 |
0 |
T81 |
53721 |
0 |
0 |
0 |
T82 |
0 |
5 |
0 |
0 |
T93 |
0 |
4230 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
896484 |
0 |
0 |
T42 |
0 |
1574 |
0 |
0 |
T46 |
141556 |
1786 |
0 |
0 |
T47 |
62477 |
0 |
0 |
0 |
T53 |
0 |
997 |
0 |
0 |
T54 |
0 |
5833 |
0 |
0 |
T55 |
0 |
7526 |
0 |
0 |
T57 |
0 |
7 |
0 |
0 |
T58 |
77204 |
774 |
0 |
0 |
T69 |
0 |
10897 |
0 |
0 |
T70 |
42231 |
0 |
0 |
0 |
T76 |
792 |
0 |
0 |
0 |
T77 |
14326 |
0 |
0 |
0 |
T78 |
1264 |
0 |
0 |
0 |
T79 |
49287 |
0 |
0 |
0 |
T80 |
14400 |
0 |
0 |
0 |
T81 |
53721 |
0 |
0 |
0 |
T82 |
0 |
5 |
0 |
0 |
T93 |
0 |
4230 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
896484 |
0 |
0 |
T42 |
0 |
1574 |
0 |
0 |
T46 |
141556 |
1786 |
0 |
0 |
T47 |
62477 |
0 |
0 |
0 |
T53 |
0 |
997 |
0 |
0 |
T54 |
0 |
5833 |
0 |
0 |
T55 |
0 |
7526 |
0 |
0 |
T57 |
0 |
7 |
0 |
0 |
T58 |
77204 |
774 |
0 |
0 |
T69 |
0 |
10897 |
0 |
0 |
T70 |
42231 |
0 |
0 |
0 |
T76 |
792 |
0 |
0 |
0 |
T77 |
14326 |
0 |
0 |
0 |
T78 |
1264 |
0 |
0 |
0 |
T79 |
49287 |
0 |
0 |
0 |
T80 |
14400 |
0 |
0 |
0 |
T81 |
53721 |
0 |
0 |
0 |
T82 |
0 |
5 |
0 |
0 |
T93 |
0 |
4230 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
896484 |
0 |
0 |
T42 |
0 |
1574 |
0 |
0 |
T46 |
141556 |
1786 |
0 |
0 |
T47 |
62477 |
0 |
0 |
0 |
T53 |
0 |
997 |
0 |
0 |
T54 |
0 |
5833 |
0 |
0 |
T55 |
0 |
7526 |
0 |
0 |
T57 |
0 |
7 |
0 |
0 |
T58 |
77204 |
774 |
0 |
0 |
T69 |
0 |
10897 |
0 |
0 |
T70 |
42231 |
0 |
0 |
0 |
T76 |
792 |
0 |
0 |
0 |
T77 |
14326 |
0 |
0 |
0 |
T78 |
1264 |
0 |
0 |
0 |
T79 |
49287 |
0 |
0 |
0 |
T80 |
14400 |
0 |
0 |
0 |
T81 |
53721 |
0 |
0 |
0 |
T82 |
0 |
5 |
0 |
0 |
T93 |
0 |
4230 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
0 |
0 |
0 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
121758958 |
0 |
0 |
T6 |
6240 |
6240 |
0 |
0 |
T12 |
7219 |
0 |
0 |
0 |
T13 |
32 |
32 |
0 |
0 |
T14 |
10634 |
10634 |
0 |
0 |
T15 |
360 |
0 |
0 |
0 |
T16 |
184 |
0 |
0 |
0 |
T17 |
17487 |
0 |
0 |
0 |
T18 |
20388 |
19990 |
0 |
0 |
T19 |
19830 |
19536 |
0 |
0 |
T20 |
55532 |
55232 |
0 |
0 |
T21 |
0 |
24272 |
0 |
0 |
T23 |
0 |
34464 |
0 |
0 |
T24 |
0 |
62324 |
0 |
0 |
T25 |
0 |
18795 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151971634 |
896484 |
0 |
0 |
T42 |
0 |
1574 |
0 |
0 |
T46 |
141556 |
1786 |
0 |
0 |
T47 |
62477 |
0 |
0 |
0 |
T53 |
0 |
997 |
0 |
0 |
T54 |
0 |
5833 |
0 |
0 |
T55 |
0 |
7526 |
0 |
0 |
T57 |
0 |
7 |
0 |
0 |
T58 |
77204 |
774 |
0 |
0 |
T69 |
0 |
10897 |
0 |
0 |
T70 |
42231 |
0 |
0 |
0 |
T76 |
792 |
0 |
0 |
0 |
T77 |
14326 |
0 |
0 |
0 |
T78 |
1264 |
0 |
0 |
0 |
T79 |
49287 |
0 |
0 |
0 |
T80 |
14400 |
0 |
0 |
0 |
T81 |
53721 |
0 |
0 |
0 |
T82 |
0 |
5 |
0 |
0 |
T93 |
0 |
4230 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_sys_sram_arbiter.gen_arb_ppc.u_reqarb
| Line No. | Total | Covered | Percent |
TOTAL | | 22 | 22 | 100.00 |
CONT_ASSIGN | 55 | 0 | 0 | |
CONT_ASSIGN | 75 | 1 | 1 | 100.00 |
CONT_ASSIGN | 76 | 1 | 1 | 100.00 |
ALWAYS | 82 | 3 | 3 | 100.00 |
CONT_ASSIGN | 89 | 1 | 1 | 100.00 |
CONT_ASSIGN | 90 | 1 | 1 | 100.00 |
CONT_ASSIGN | 92 | 1 | 1 | 100.00 |
CONT_ASSIGN | 94 | 1 | 1 | 100.00 |
ALWAYS | 96 | 5 | 5 | 100.00 |
ALWAYS | 109 | 4 | 4 | 100.00 |
ALWAYS | 124 | 4 | 4 | 100.00 |
54 logic unused_req_chk;
55 unreachable assign unused_req_chk = req_chk_i;
56
57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0)
58
59 // this case is basically just a bypass
60 if (N == 1) begin : gen_degenerate_case
61
62 assign valid_o = req_i[0];
63 assign data_o = data_i[0];
64 assign gnt_o[0] = valid_o & ready_i;
65 assign idx_o = '0;
66
67 end else begin : gen_normal_case
68
69 logic [N-1:0] masked_req;
70 logic [N-1:0] ppc_out;
71 logic [N-1:0] arb_req;
72 logic [N-1:0] mask, mask_next;
73 logic [N-1:0] winner;
74
75 1/1 assign masked_req = mask & req_i;
Tests: T1 T2 T3
76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i;
Tests: T1 T2 T3
77
78 // PPC
79 // Even below code looks O(n) but DC optimizes it to O(log(N))
80 // Using Parallel Prefix Computation
81 always_comb begin
82 1/1 ppc_out[0] = arb_req[0];
Tests: T1 T2 T3
83 1/1 for (int i = 1 ; i < N ; i++) begin
Tests: T1 T2 T3
84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i];
Tests: T1 T2 T3
85 end
86 end
87
88 // Grant Generation: Leading-One detector
89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
90 1/1 assign gnt_o = (ready_i) ? winner : '0;
Tests: T1 T2 T3
91
92 1/1 assign valid_o = |req_i;
Tests: T1 T2 T3
93 // Mask Generation
94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0};
Tests: T1 T2 T3
95 always_ff @(posedge clk_i or negedge rst_ni) begin
96 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
97 1/1 mask <= '0;
Tests: T1 T2 T3
98 1/1 end else if (valid_o && ready_i) begin
Tests: T1 T2 T3
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T4 T5 T6
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T1 T2 T3
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 unreachable mask <= ppc_out;
104 end
MISSING_ELSE
105 end
106
107 if (EnDataPort == 1) begin: gen_datapath
108 always_comb begin
109 1/1 data_o = '0;
Tests: T1 T2 T3
110 1/1 for (int i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
111 1/1 if (winner[i]) begin
Tests: T1 T2 T3
112 1/1 data_o = data_i[i];
Tests: T4 T5 T6
113 end
MISSING_ELSE
114 end
115 end
116 end else begin: gen_nodatapath
117 assign data_o = '1;
118 // The following signal is used to avoid possible lint errors.
119 logic [DW-1:0] unused_data [N];
120 assign unused_data = data_i;
121 end
122
123 always_comb begin
124 1/1 idx_o = '0;
Tests: T1 T2 T3
125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
126 1/1 if (winner[i]) begin
Tests: T1 T2 T3
127 1/1 idx_o = i[IdxW-1:0];
Tests: T4 T5 T6
128 end
MISSING_ELSE
Cond Coverage for Instance : tb.dut.u_sys_sram_arbiter.gen_arb_ppc.u_reqarb
| Total | Covered | Percent |
Conditions | 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 | T4,T5,T10 |
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 | T4,T5,T10 |
1 | 0 | Covered | T4,T5,T6 |
LINE 90
EXPRESSION (ready_i ? gen_normal_case.winner : '0)
---1---
-1- | Status | Tests |
0 | Unreachable | |
1 | Covered | T1,T2,T3 |
LINE 98
EXPRESSION (valid_o && ready_i)
---1--- ---2---
-1- | -2- | Status | Tests |
0 | 1 | Covered | T1,T2,T3 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T4,T5,T6 |
LINE 101
EXPRESSION (valid_o && ((!ready_i)))
---1--- ------2-----
-1- | -2- | Status | Tests |
0 | 1 | Unreachable | |
1 | 0 | Not Covered | |
1 | 1 | Unreachable | |
Branch Coverage for 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 |
T4,T5,T10 |
0 |
Covered |
T1,T2,T3 |
90 assign gnt_o = (ready_i) ? winner : '0;
-1-
==>
==> (Unreachable)
Branches:
-1- | Status | Tests |
1 |
Covered |
T1,T2,T3 |
0 |
Unreachable |
|
96 if (!rst_ni) begin
-1-
97 mask <= '0;
==>
98 end else if (valid_o && ready_i) begin
-2-
99 // Latch only when requests accepted
100 mask <= mask_next;
==>
101 end else if (valid_o && !ready_i) begin
-3-
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 mask <= ppc_out;
==> (Unreachable)
104 end
MISSING_ELSE
==>
Branches:
-1- | -2- | -3- | Status | Tests |
1 |
- |
- |
Covered |
T1,T2,T3 |
0 |
1 |
- |
Covered |
T4,T5,T6 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T1,T2,T3 |
126 if (winner[i]) begin
-1-
127 idx_o = i[IdxW-1:0];
==>
128 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T4,T5,T6 |
0 |
Covered |
T1,T2,T3 |
111 if (winner[i]) begin
-1-
112 data_o = data_i[i];
==>
113 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T4,T5,T6 |
0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_sys_sram_arbiter.gen_arb_ppc.u_reqarb
Assertion Details
CheckHotOne_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453132174 |
453044210 |
0 |
0 |
T1 |
1596 |
1540 |
0 |
0 |
T2 |
1231 |
1140 |
0 |
0 |
T3 |
2908 |
2842 |
0 |
0 |
T4 |
2964 |
2889 |
0 |
0 |
T5 |
3191 |
3103 |
0 |
0 |
T6 |
9154 |
9068 |
0 |
0 |
T7 |
1029 |
943 |
0 |
0 |
T8 |
1202 |
1148 |
0 |
0 |
T9 |
1093 |
1014 |
0 |
0 |
T10 |
2692 |
2631 |
0 |
0 |
CheckNGreaterZero_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
975 |
975 |
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 |
453132174 |
2371358 |
0 |
0 |
T4 |
2964 |
69 |
0 |
0 |
T5 |
3191 |
200 |
0 |
0 |
T6 |
9154 |
832 |
0 |
0 |
T7 |
1029 |
0 |
0 |
0 |
T8 |
1202 |
0 |
0 |
0 |
T9 |
1093 |
0 |
0 |
0 |
T10 |
2692 |
200 |
0 |
0 |
T11 |
5867 |
0 |
0 |
0 |
T12 |
60544 |
64 |
0 |
0 |
T13 |
2780 |
832 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
T16 |
0 |
2 |
0 |
0 |
T18 |
0 |
832 |
0 |
0 |
T19 |
0 |
832 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453132174 |
2371358 |
0 |
0 |
T4 |
2964 |
69 |
0 |
0 |
T5 |
3191 |
200 |
0 |
0 |
T6 |
9154 |
832 |
0 |
0 |
T7 |
1029 |
0 |
0 |
0 |
T8 |
1202 |
0 |
0 |
0 |
T9 |
1093 |
0 |
0 |
0 |
T10 |
2692 |
200 |
0 |
0 |
T11 |
5867 |
0 |
0 |
0 |
T12 |
60544 |
64 |
0 |
0 |
T13 |
2780 |
832 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
T16 |
0 |
2 |
0 |
0 |
T18 |
0 |
832 |
0 |
0 |
T19 |
0 |
832 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453132174 |
453044210 |
0 |
0 |
T1 |
1596 |
1540 |
0 |
0 |
T2 |
1231 |
1140 |
0 |
0 |
T3 |
2908 |
2842 |
0 |
0 |
T4 |
2964 |
2889 |
0 |
0 |
T5 |
3191 |
3103 |
0 |
0 |
T6 |
9154 |
9068 |
0 |
0 |
T7 |
1029 |
943 |
0 |
0 |
T8 |
1202 |
1148 |
0 |
0 |
T9 |
1093 |
1014 |
0 |
0 |
T10 |
2692 |
2631 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453132174 |
453044210 |
0 |
0 |
T1 |
1596 |
1540 |
0 |
0 |
T2 |
1231 |
1140 |
0 |
0 |
T3 |
2908 |
2842 |
0 |
0 |
T4 |
2964 |
2889 |
0 |
0 |
T5 |
3191 |
3103 |
0 |
0 |
T6 |
9154 |
9068 |
0 |
0 |
T7 |
1029 |
943 |
0 |
0 |
T8 |
1202 |
1148 |
0 |
0 |
T9 |
1093 |
1014 |
0 |
0 |
T10 |
2692 |
2631 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453132174 |
2371358 |
0 |
0 |
T4 |
2964 |
69 |
0 |
0 |
T5 |
3191 |
200 |
0 |
0 |
T6 |
9154 |
832 |
0 |
0 |
T7 |
1029 |
0 |
0 |
0 |
T8 |
1202 |
0 |
0 |
0 |
T9 |
1093 |
0 |
0 |
0 |
T10 |
2692 |
200 |
0 |
0 |
T11 |
5867 |
0 |
0 |
0 |
T12 |
60544 |
64 |
0 |
0 |
T13 |
2780 |
832 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
T16 |
0 |
2 |
0 |
0 |
T18 |
0 |
832 |
0 |
0 |
T19 |
0 |
832 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453132174 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453132174 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453132174 |
2371358 |
0 |
0 |
T4 |
2964 |
69 |
0 |
0 |
T5 |
3191 |
200 |
0 |
0 |
T6 |
9154 |
832 |
0 |
0 |
T7 |
1029 |
0 |
0 |
0 |
T8 |
1202 |
0 |
0 |
0 |
T9 |
1093 |
0 |
0 |
0 |
T10 |
2692 |
200 |
0 |
0 |
T11 |
5867 |
0 |
0 |
0 |
T12 |
60544 |
64 |
0 |
0 |
T13 |
2780 |
832 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
T16 |
0 |
2 |
0 |
0 |
T18 |
0 |
832 |
0 |
0 |
T19 |
0 |
832 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453132174 |
2371358 |
0 |
0 |
T4 |
2964 |
69 |
0 |
0 |
T5 |
3191 |
200 |
0 |
0 |
T6 |
9154 |
832 |
0 |
0 |
T7 |
1029 |
0 |
0 |
0 |
T8 |
1202 |
0 |
0 |
0 |
T9 |
1093 |
0 |
0 |
0 |
T10 |
2692 |
200 |
0 |
0 |
T11 |
5867 |
0 |
0 |
0 |
T12 |
60544 |
64 |
0 |
0 |
T13 |
2780 |
832 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
T16 |
0 |
2 |
0 |
0 |
T18 |
0 |
832 |
0 |
0 |
T19 |
0 |
832 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453132174 |
2371358 |
0 |
0 |
T4 |
2964 |
69 |
0 |
0 |
T5 |
3191 |
200 |
0 |
0 |
T6 |
9154 |
832 |
0 |
0 |
T7 |
1029 |
0 |
0 |
0 |
T8 |
1202 |
0 |
0 |
0 |
T9 |
1093 |
0 |
0 |
0 |
T10 |
2692 |
200 |
0 |
0 |
T11 |
5867 |
0 |
0 |
0 |
T12 |
60544 |
64 |
0 |
0 |
T13 |
2780 |
832 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
T16 |
0 |
2 |
0 |
0 |
T18 |
0 |
832 |
0 |
0 |
T19 |
0 |
832 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453132174 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453132174 |
1 |
0 |
975 |
T83 |
759259 |
1 |
0 |
1 |
T84 |
23005 |
0 |
0 |
1 |
T85 |
486318 |
0 |
0 |
1 |
T86 |
14254 |
0 |
0 |
1 |
T87 |
307633 |
0 |
0 |
1 |
T88 |
293653 |
0 |
0 |
1 |
T89 |
1262 |
0 |
0 |
1 |
T90 |
213521 |
0 |
0 |
1 |
T91 |
1756 |
0 |
0 |
1 |
T92 |
20068 |
0 |
0 |
1 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453132174 |
453044210 |
0 |
0 |
T1 |
1596 |
1540 |
0 |
0 |
T2 |
1231 |
1140 |
0 |
0 |
T3 |
2908 |
2842 |
0 |
0 |
T4 |
2964 |
2889 |
0 |
0 |
T5 |
3191 |
3103 |
0 |
0 |
T6 |
9154 |
9068 |
0 |
0 |
T7 |
1029 |
943 |
0 |
0 |
T8 |
1202 |
1148 |
0 |
0 |
T9 |
1093 |
1014 |
0 |
0 |
T10 |
2692 |
2631 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
453132174 |
2371358 |
0 |
0 |
T4 |
2964 |
69 |
0 |
0 |
T5 |
3191 |
200 |
0 |
0 |
T6 |
9154 |
832 |
0 |
0 |
T7 |
1029 |
0 |
0 |
0 |
T8 |
1202 |
0 |
0 |
0 |
T9 |
1093 |
0 |
0 |
0 |
T10 |
2692 |
200 |
0 |
0 |
T11 |
5867 |
0 |
0 |
0 |
T12 |
60544 |
64 |
0 |
0 |
T13 |
2780 |
832 |
0 |
0 |
T14 |
0 |
832 |
0 |
0 |
T16 |
0 |
2 |
0 |
0 |
T18 |
0 |
832 |
0 |
0 |
T19 |
0 |
832 |
0 |
0 |