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 T7
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T4 T11 T17
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T3 T4 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: T4 T11 T17
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 T11 T17
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,T11,T17 |
1 | 0 | Covered | T4,T11,T17 |
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,T7 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T4,T11,T17 |
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 | T15,T17,T46 |
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 | T15,T17,T46 |
1 | 0 | Covered | T15,T17,T46 |
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,T8 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T15,T17,T46 |
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 | T11,T15,T17 |
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,T11,T15 |
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 |
T11,T15,T17 |
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 Module :
prim_arbiter_ppc
Assertion Details
CheckHotOne_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
738209477 |
585174229 |
0 |
0 |
T1 |
1404 |
1308 |
0 |
0 |
T2 |
1589 |
1496 |
0 |
0 |
T3 |
3245 |
3181 |
0 |
0 |
T4 |
2960 |
2742 |
0 |
0 |
T5 |
88404 |
66929 |
0 |
0 |
T6 |
82263 |
56658 |
0 |
0 |
T7 |
539065 |
476586 |
0 |
0 |
T8 |
109326 |
82614 |
0 |
0 |
T9 |
17704 |
15557 |
0 |
0 |
T10 |
112948 |
97722 |
0 |
0 |
T11 |
427066 |
206808 |
0 |
0 |
T12 |
289232 |
144500 |
0 |
0 |
T13 |
16133 |
16133 |
0 |
0 |
T14 |
65873 |
65873 |
0 |
0 |
T15 |
0 |
248469 |
0 |
0 |
T17 |
0 |
311549 |
0 |
0 |
T25 |
0 |
1008 |
0 |
0 |
T26 |
0 |
2520 |
0 |
0 |
T27 |
0 |
78744 |
0 |
0 |
T28 |
0 |
354616 |
0 |
0 |
T29 |
0 |
58480 |
0 |
0 |
CheckNGreaterZero_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
2865 |
2865 |
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 |
738209477 |
3713125 |
0 |
0 |
T4 |
2960 |
83 |
0 |
0 |
T5 |
67012 |
832 |
0 |
0 |
T6 |
57211 |
832 |
0 |
0 |
T7 |
478717 |
0 |
0 |
0 |
T8 |
82759 |
832 |
0 |
0 |
T9 |
15624 |
832 |
0 |
0 |
T10 |
97822 |
832 |
0 |
0 |
T11 |
387905 |
6053 |
0 |
0 |
T12 |
184593 |
832 |
0 |
0 |
T13 |
132114 |
832 |
0 |
0 |
T14 |
0 |
2368 |
0 |
0 |
T15 |
249312 |
2674 |
0 |
0 |
T17 |
314116 |
5613 |
0 |
0 |
T25 |
1302 |
0 |
0 |
0 |
T26 |
2520 |
202 |
0 |
0 |
T27 |
82904 |
0 |
0 |
0 |
T28 |
0 |
4746 |
0 |
0 |
T34 |
15578 |
0 |
0 |
0 |
T35 |
8256 |
0 |
0 |
0 |
T36 |
22424 |
0 |
0 |
0 |
T39 |
0 |
2652 |
0 |
0 |
T41 |
0 |
135 |
0 |
0 |
T42 |
0 |
5558 |
0 |
0 |
T43 |
0 |
3250 |
0 |
0 |
T44 |
0 |
3601 |
0 |
0 |
T46 |
0 |
8 |
0 |
0 |
T49 |
17836 |
0 |
0 |
0 |
T58 |
31936 |
0 |
0 |
0 |
T59 |
0 |
96 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
738209477 |
3713125 |
0 |
0 |
T4 |
2960 |
83 |
0 |
0 |
T5 |
67012 |
832 |
0 |
0 |
T6 |
57211 |
832 |
0 |
0 |
T7 |
478717 |
0 |
0 |
0 |
T8 |
82759 |
832 |
0 |
0 |
T9 |
15624 |
832 |
0 |
0 |
T10 |
97822 |
832 |
0 |
0 |
T11 |
387905 |
6053 |
0 |
0 |
T12 |
184593 |
832 |
0 |
0 |
T13 |
132114 |
832 |
0 |
0 |
T14 |
0 |
2368 |
0 |
0 |
T15 |
249312 |
2674 |
0 |
0 |
T17 |
314116 |
5613 |
0 |
0 |
T25 |
1302 |
0 |
0 |
0 |
T26 |
2520 |
202 |
0 |
0 |
T27 |
82904 |
0 |
0 |
0 |
T28 |
0 |
4746 |
0 |
0 |
T34 |
15578 |
0 |
0 |
0 |
T35 |
8256 |
0 |
0 |
0 |
T36 |
22424 |
0 |
0 |
0 |
T39 |
0 |
2652 |
0 |
0 |
T41 |
0 |
135 |
0 |
0 |
T42 |
0 |
5558 |
0 |
0 |
T43 |
0 |
3250 |
0 |
0 |
T44 |
0 |
3601 |
0 |
0 |
T46 |
0 |
8 |
0 |
0 |
T49 |
17836 |
0 |
0 |
0 |
T58 |
31936 |
0 |
0 |
0 |
T59 |
0 |
96 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
738209477 |
585174229 |
0 |
0 |
T1 |
1404 |
1308 |
0 |
0 |
T2 |
1589 |
1496 |
0 |
0 |
T3 |
3245 |
3181 |
0 |
0 |
T4 |
2960 |
2742 |
0 |
0 |
T5 |
88404 |
66929 |
0 |
0 |
T6 |
82263 |
56658 |
0 |
0 |
T7 |
539065 |
476586 |
0 |
0 |
T8 |
109326 |
82614 |
0 |
0 |
T9 |
17704 |
15557 |
0 |
0 |
T10 |
112948 |
97722 |
0 |
0 |
T11 |
427066 |
206808 |
0 |
0 |
T12 |
289232 |
144500 |
0 |
0 |
T13 |
16133 |
16133 |
0 |
0 |
T14 |
65873 |
65873 |
0 |
0 |
T15 |
0 |
248469 |
0 |
0 |
T17 |
0 |
311549 |
0 |
0 |
T25 |
0 |
1008 |
0 |
0 |
T26 |
0 |
2520 |
0 |
0 |
T27 |
0 |
78744 |
0 |
0 |
T28 |
0 |
354616 |
0 |
0 |
T29 |
0 |
58480 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
738209477 |
585174229 |
0 |
0 |
T1 |
1404 |
1308 |
0 |
0 |
T2 |
1589 |
1496 |
0 |
0 |
T3 |
3245 |
3181 |
0 |
0 |
T4 |
2960 |
2742 |
0 |
0 |
T5 |
88404 |
66929 |
0 |
0 |
T6 |
82263 |
56658 |
0 |
0 |
T7 |
539065 |
476586 |
0 |
0 |
T8 |
109326 |
82614 |
0 |
0 |
T9 |
17704 |
15557 |
0 |
0 |
T10 |
112948 |
97722 |
0 |
0 |
T11 |
427066 |
206808 |
0 |
0 |
T12 |
289232 |
144500 |
0 |
0 |
T13 |
16133 |
16133 |
0 |
0 |
T14 |
65873 |
65873 |
0 |
0 |
T15 |
0 |
248469 |
0 |
0 |
T17 |
0 |
311549 |
0 |
0 |
T25 |
0 |
1008 |
0 |
0 |
T26 |
0 |
2520 |
0 |
0 |
T27 |
0 |
78744 |
0 |
0 |
T28 |
0 |
354616 |
0 |
0 |
T29 |
0 |
58480 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
738209477 |
3713125 |
0 |
0 |
T4 |
2960 |
83 |
0 |
0 |
T5 |
67012 |
832 |
0 |
0 |
T6 |
57211 |
832 |
0 |
0 |
T7 |
478717 |
0 |
0 |
0 |
T8 |
82759 |
832 |
0 |
0 |
T9 |
15624 |
832 |
0 |
0 |
T10 |
97822 |
832 |
0 |
0 |
T11 |
387905 |
6053 |
0 |
0 |
T12 |
184593 |
832 |
0 |
0 |
T13 |
132114 |
832 |
0 |
0 |
T14 |
0 |
2368 |
0 |
0 |
T15 |
249312 |
2674 |
0 |
0 |
T17 |
314116 |
5613 |
0 |
0 |
T25 |
1302 |
0 |
0 |
0 |
T26 |
2520 |
202 |
0 |
0 |
T27 |
82904 |
0 |
0 |
0 |
T28 |
0 |
4746 |
0 |
0 |
T34 |
15578 |
0 |
0 |
0 |
T35 |
8256 |
0 |
0 |
0 |
T36 |
22424 |
0 |
0 |
0 |
T39 |
0 |
2652 |
0 |
0 |
T41 |
0 |
135 |
0 |
0 |
T42 |
0 |
5558 |
0 |
0 |
T43 |
0 |
3250 |
0 |
0 |
T44 |
0 |
3601 |
0 |
0 |
T46 |
0 |
8 |
0 |
0 |
T49 |
17836 |
0 |
0 |
0 |
T58 |
31936 |
0 |
0 |
0 |
T59 |
0 |
96 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
738209477 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
738209477 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
738209477 |
3713125 |
0 |
0 |
T4 |
2960 |
83 |
0 |
0 |
T5 |
67012 |
832 |
0 |
0 |
T6 |
57211 |
832 |
0 |
0 |
T7 |
478717 |
0 |
0 |
0 |
T8 |
82759 |
832 |
0 |
0 |
T9 |
15624 |
832 |
0 |
0 |
T10 |
97822 |
832 |
0 |
0 |
T11 |
387905 |
6053 |
0 |
0 |
T12 |
184593 |
832 |
0 |
0 |
T13 |
132114 |
832 |
0 |
0 |
T14 |
0 |
2368 |
0 |
0 |
T15 |
249312 |
2674 |
0 |
0 |
T17 |
314116 |
5613 |
0 |
0 |
T25 |
1302 |
0 |
0 |
0 |
T26 |
2520 |
202 |
0 |
0 |
T27 |
82904 |
0 |
0 |
0 |
T28 |
0 |
4746 |
0 |
0 |
T34 |
15578 |
0 |
0 |
0 |
T35 |
8256 |
0 |
0 |
0 |
T36 |
22424 |
0 |
0 |
0 |
T39 |
0 |
2652 |
0 |
0 |
T41 |
0 |
135 |
0 |
0 |
T42 |
0 |
5558 |
0 |
0 |
T43 |
0 |
3250 |
0 |
0 |
T44 |
0 |
3601 |
0 |
0 |
T46 |
0 |
8 |
0 |
0 |
T49 |
17836 |
0 |
0 |
0 |
T58 |
31936 |
0 |
0 |
0 |
T59 |
0 |
96 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
738209477 |
3713125 |
0 |
0 |
T4 |
2960 |
83 |
0 |
0 |
T5 |
67012 |
832 |
0 |
0 |
T6 |
57211 |
832 |
0 |
0 |
T7 |
478717 |
0 |
0 |
0 |
T8 |
82759 |
832 |
0 |
0 |
T9 |
15624 |
832 |
0 |
0 |
T10 |
97822 |
832 |
0 |
0 |
T11 |
387905 |
6053 |
0 |
0 |
T12 |
184593 |
832 |
0 |
0 |
T13 |
132114 |
832 |
0 |
0 |
T14 |
0 |
2368 |
0 |
0 |
T15 |
249312 |
2674 |
0 |
0 |
T17 |
314116 |
5613 |
0 |
0 |
T25 |
1302 |
0 |
0 |
0 |
T26 |
2520 |
202 |
0 |
0 |
T27 |
82904 |
0 |
0 |
0 |
T28 |
0 |
4746 |
0 |
0 |
T34 |
15578 |
0 |
0 |
0 |
T35 |
8256 |
0 |
0 |
0 |
T36 |
22424 |
0 |
0 |
0 |
T39 |
0 |
2652 |
0 |
0 |
T41 |
0 |
135 |
0 |
0 |
T42 |
0 |
5558 |
0 |
0 |
T43 |
0 |
3250 |
0 |
0 |
T44 |
0 |
3601 |
0 |
0 |
T46 |
0 |
8 |
0 |
0 |
T49 |
17836 |
0 |
0 |
0 |
T58 |
31936 |
0 |
0 |
0 |
T59 |
0 |
96 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
738209477 |
3713125 |
0 |
0 |
T4 |
2960 |
83 |
0 |
0 |
T5 |
67012 |
832 |
0 |
0 |
T6 |
57211 |
832 |
0 |
0 |
T7 |
478717 |
0 |
0 |
0 |
T8 |
82759 |
832 |
0 |
0 |
T9 |
15624 |
832 |
0 |
0 |
T10 |
97822 |
832 |
0 |
0 |
T11 |
387905 |
6053 |
0 |
0 |
T12 |
184593 |
832 |
0 |
0 |
T13 |
132114 |
832 |
0 |
0 |
T14 |
0 |
2368 |
0 |
0 |
T15 |
249312 |
2674 |
0 |
0 |
T17 |
314116 |
5613 |
0 |
0 |
T25 |
1302 |
0 |
0 |
0 |
T26 |
2520 |
202 |
0 |
0 |
T27 |
82904 |
0 |
0 |
0 |
T28 |
0 |
4746 |
0 |
0 |
T34 |
15578 |
0 |
0 |
0 |
T35 |
8256 |
0 |
0 |
0 |
T36 |
22424 |
0 |
0 |
0 |
T39 |
0 |
2652 |
0 |
0 |
T41 |
0 |
135 |
0 |
0 |
T42 |
0 |
5558 |
0 |
0 |
T43 |
0 |
3250 |
0 |
0 |
T44 |
0 |
3601 |
0 |
0 |
T46 |
0 |
8 |
0 |
0 |
T49 |
17836 |
0 |
0 |
0 |
T58 |
31936 |
0 |
0 |
0 |
T59 |
0 |
96 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
738209477 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
738209477 |
3 |
0 |
955 |
T60 |
554560 |
1 |
0 |
1 |
T61 |
0 |
1 |
0 |
0 |
T62 |
0 |
1 |
0 |
0 |
T63 |
32716 |
0 |
0 |
1 |
T64 |
662948 |
0 |
0 |
1 |
T65 |
21172 |
0 |
0 |
1 |
T66 |
53725 |
0 |
0 |
1 |
T67 |
148136 |
0 |
0 |
1 |
T68 |
4348 |
0 |
0 |
1 |
T69 |
1230 |
0 |
0 |
1 |
T70 |
1382 |
0 |
0 |
1 |
T71 |
779 |
0 |
0 |
1 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
738209477 |
585174229 |
0 |
0 |
T1 |
1404 |
1308 |
0 |
0 |
T2 |
1589 |
1496 |
0 |
0 |
T3 |
3245 |
3181 |
0 |
0 |
T4 |
2960 |
2742 |
0 |
0 |
T5 |
88404 |
66929 |
0 |
0 |
T6 |
82263 |
56658 |
0 |
0 |
T7 |
539065 |
476586 |
0 |
0 |
T8 |
109326 |
82614 |
0 |
0 |
T9 |
17704 |
15557 |
0 |
0 |
T10 |
112948 |
97722 |
0 |
0 |
T11 |
427066 |
206808 |
0 |
0 |
T12 |
289232 |
144500 |
0 |
0 |
T13 |
16133 |
16133 |
0 |
0 |
T14 |
65873 |
65873 |
0 |
0 |
T15 |
0 |
248469 |
0 |
0 |
T17 |
0 |
311549 |
0 |
0 |
T25 |
0 |
1008 |
0 |
0 |
T26 |
0 |
2520 |
0 |
0 |
T27 |
0 |
78744 |
0 |
0 |
T28 |
0 |
354616 |
0 |
0 |
T29 |
0 |
58480 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
738209477 |
3713125 |
0 |
0 |
T4 |
2960 |
83 |
0 |
0 |
T5 |
67012 |
832 |
0 |
0 |
T6 |
57211 |
832 |
0 |
0 |
T7 |
478717 |
0 |
0 |
0 |
T8 |
82759 |
832 |
0 |
0 |
T9 |
15624 |
832 |
0 |
0 |
T10 |
97822 |
832 |
0 |
0 |
T11 |
387905 |
6053 |
0 |
0 |
T12 |
184593 |
832 |
0 |
0 |
T13 |
132114 |
832 |
0 |
0 |
T14 |
0 |
2368 |
0 |
0 |
T15 |
249312 |
2674 |
0 |
0 |
T17 |
314116 |
5613 |
0 |
0 |
T25 |
1302 |
0 |
0 |
0 |
T26 |
2520 |
202 |
0 |
0 |
T27 |
82904 |
0 |
0 |
0 |
T28 |
0 |
4746 |
0 |
0 |
T34 |
15578 |
0 |
0 |
0 |
T35 |
8256 |
0 |
0 |
0 |
T36 |
22424 |
0 |
0 |
0 |
T39 |
0 |
2652 |
0 |
0 |
T41 |
0 |
135 |
0 |
0 |
T42 |
0 |
5558 |
0 |
0 |
T43 |
0 |
3250 |
0 |
0 |
T44 |
0 |
3601 |
0 |
0 |
T46 |
0 |
8 |
0 |
0 |
T49 |
17836 |
0 |
0 |
0 |
T58 |
31936 |
0 |
0 |
0 |
T59 |
0 |
96 |
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 T7
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T4 T11 T17
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T3 T4 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: T4 T11 T17
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 T11 T17
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,T11,T17 |
1 | 0 | Covered | T4,T11,T17 |
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,T7 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T4,T11,T17 |
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,T11,T17 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T3,T4,T7 |
126 if (winner[i]) begin
-1-
127 idx_o = i[IdxW-1:0];
==>
128 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T4,T11,T17 |
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,T11,T17 |
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 |
151598662 |
29022453 |
0 |
0 |
T3 |
864 |
864 |
0 |
0 |
T4 |
791 |
648 |
0 |
0 |
T5 |
21392 |
0 |
0 |
0 |
T6 |
25052 |
0 |
0 |
0 |
T7 |
60348 |
58312 |
0 |
0 |
T8 |
26567 |
0 |
0 |
0 |
T9 |
2080 |
0 |
0 |
0 |
T10 |
15126 |
0 |
0 |
0 |
T11 |
213533 |
206808 |
0 |
0 |
T12 |
144616 |
0 |
0 |
0 |
T17 |
0 |
64352 |
0 |
0 |
T25 |
0 |
1008 |
0 |
0 |
T26 |
0 |
2520 |
0 |
0 |
T27 |
0 |
78744 |
0 |
0 |
T28 |
0 |
354616 |
0 |
0 |
T29 |
0 |
58480 |
0 |
0 |
CheckNGreaterZero_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
955 |
955 |
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 |
151598662 |
610642 |
0 |
0 |
T4 |
791 |
66 |
0 |
0 |
T5 |
21392 |
0 |
0 |
0 |
T6 |
25052 |
0 |
0 |
0 |
T7 |
60348 |
0 |
0 |
0 |
T8 |
26567 |
0 |
0 |
0 |
T9 |
2080 |
0 |
0 |
0 |
T10 |
15126 |
0 |
0 |
0 |
T11 |
213533 |
4066 |
0 |
0 |
T12 |
144616 |
0 |
0 |
0 |
T13 |
16133 |
0 |
0 |
0 |
T17 |
0 |
1981 |
0 |
0 |
T26 |
0 |
202 |
0 |
0 |
T28 |
0 |
4746 |
0 |
0 |
T41 |
0 |
135 |
0 |
0 |
T42 |
0 |
5558 |
0 |
0 |
T43 |
0 |
2848 |
0 |
0 |
T44 |
0 |
3601 |
0 |
0 |
T59 |
0 |
96 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
610642 |
0 |
0 |
T4 |
791 |
66 |
0 |
0 |
T5 |
21392 |
0 |
0 |
0 |
T6 |
25052 |
0 |
0 |
0 |
T7 |
60348 |
0 |
0 |
0 |
T8 |
26567 |
0 |
0 |
0 |
T9 |
2080 |
0 |
0 |
0 |
T10 |
15126 |
0 |
0 |
0 |
T11 |
213533 |
4066 |
0 |
0 |
T12 |
144616 |
0 |
0 |
0 |
T13 |
16133 |
0 |
0 |
0 |
T17 |
0 |
1981 |
0 |
0 |
T26 |
0 |
202 |
0 |
0 |
T28 |
0 |
4746 |
0 |
0 |
T41 |
0 |
135 |
0 |
0 |
T42 |
0 |
5558 |
0 |
0 |
T43 |
0 |
2848 |
0 |
0 |
T44 |
0 |
3601 |
0 |
0 |
T59 |
0 |
96 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
29022453 |
0 |
0 |
T3 |
864 |
864 |
0 |
0 |
T4 |
791 |
648 |
0 |
0 |
T5 |
21392 |
0 |
0 |
0 |
T6 |
25052 |
0 |
0 |
0 |
T7 |
60348 |
58312 |
0 |
0 |
T8 |
26567 |
0 |
0 |
0 |
T9 |
2080 |
0 |
0 |
0 |
T10 |
15126 |
0 |
0 |
0 |
T11 |
213533 |
206808 |
0 |
0 |
T12 |
144616 |
0 |
0 |
0 |
T17 |
0 |
64352 |
0 |
0 |
T25 |
0 |
1008 |
0 |
0 |
T26 |
0 |
2520 |
0 |
0 |
T27 |
0 |
78744 |
0 |
0 |
T28 |
0 |
354616 |
0 |
0 |
T29 |
0 |
58480 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
29022453 |
0 |
0 |
T3 |
864 |
864 |
0 |
0 |
T4 |
791 |
648 |
0 |
0 |
T5 |
21392 |
0 |
0 |
0 |
T6 |
25052 |
0 |
0 |
0 |
T7 |
60348 |
58312 |
0 |
0 |
T8 |
26567 |
0 |
0 |
0 |
T9 |
2080 |
0 |
0 |
0 |
T10 |
15126 |
0 |
0 |
0 |
T11 |
213533 |
206808 |
0 |
0 |
T12 |
144616 |
0 |
0 |
0 |
T17 |
0 |
64352 |
0 |
0 |
T25 |
0 |
1008 |
0 |
0 |
T26 |
0 |
2520 |
0 |
0 |
T27 |
0 |
78744 |
0 |
0 |
T28 |
0 |
354616 |
0 |
0 |
T29 |
0 |
58480 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
610642 |
0 |
0 |
T4 |
791 |
66 |
0 |
0 |
T5 |
21392 |
0 |
0 |
0 |
T6 |
25052 |
0 |
0 |
0 |
T7 |
60348 |
0 |
0 |
0 |
T8 |
26567 |
0 |
0 |
0 |
T9 |
2080 |
0 |
0 |
0 |
T10 |
15126 |
0 |
0 |
0 |
T11 |
213533 |
4066 |
0 |
0 |
T12 |
144616 |
0 |
0 |
0 |
T13 |
16133 |
0 |
0 |
0 |
T17 |
0 |
1981 |
0 |
0 |
T26 |
0 |
202 |
0 |
0 |
T28 |
0 |
4746 |
0 |
0 |
T41 |
0 |
135 |
0 |
0 |
T42 |
0 |
5558 |
0 |
0 |
T43 |
0 |
2848 |
0 |
0 |
T44 |
0 |
3601 |
0 |
0 |
T59 |
0 |
96 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
610642 |
0 |
0 |
T4 |
791 |
66 |
0 |
0 |
T5 |
21392 |
0 |
0 |
0 |
T6 |
25052 |
0 |
0 |
0 |
T7 |
60348 |
0 |
0 |
0 |
T8 |
26567 |
0 |
0 |
0 |
T9 |
2080 |
0 |
0 |
0 |
T10 |
15126 |
0 |
0 |
0 |
T11 |
213533 |
4066 |
0 |
0 |
T12 |
144616 |
0 |
0 |
0 |
T13 |
16133 |
0 |
0 |
0 |
T17 |
0 |
1981 |
0 |
0 |
T26 |
0 |
202 |
0 |
0 |
T28 |
0 |
4746 |
0 |
0 |
T41 |
0 |
135 |
0 |
0 |
T42 |
0 |
5558 |
0 |
0 |
T43 |
0 |
2848 |
0 |
0 |
T44 |
0 |
3601 |
0 |
0 |
T59 |
0 |
96 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
610642 |
0 |
0 |
T4 |
791 |
66 |
0 |
0 |
T5 |
21392 |
0 |
0 |
0 |
T6 |
25052 |
0 |
0 |
0 |
T7 |
60348 |
0 |
0 |
0 |
T8 |
26567 |
0 |
0 |
0 |
T9 |
2080 |
0 |
0 |
0 |
T10 |
15126 |
0 |
0 |
0 |
T11 |
213533 |
4066 |
0 |
0 |
T12 |
144616 |
0 |
0 |
0 |
T13 |
16133 |
0 |
0 |
0 |
T17 |
0 |
1981 |
0 |
0 |
T26 |
0 |
202 |
0 |
0 |
T28 |
0 |
4746 |
0 |
0 |
T41 |
0 |
135 |
0 |
0 |
T42 |
0 |
5558 |
0 |
0 |
T43 |
0 |
2848 |
0 |
0 |
T44 |
0 |
3601 |
0 |
0 |
T59 |
0 |
96 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
610642 |
0 |
0 |
T4 |
791 |
66 |
0 |
0 |
T5 |
21392 |
0 |
0 |
0 |
T6 |
25052 |
0 |
0 |
0 |
T7 |
60348 |
0 |
0 |
0 |
T8 |
26567 |
0 |
0 |
0 |
T9 |
2080 |
0 |
0 |
0 |
T10 |
15126 |
0 |
0 |
0 |
T11 |
213533 |
4066 |
0 |
0 |
T12 |
144616 |
0 |
0 |
0 |
T13 |
16133 |
0 |
0 |
0 |
T17 |
0 |
1981 |
0 |
0 |
T26 |
0 |
202 |
0 |
0 |
T28 |
0 |
4746 |
0 |
0 |
T41 |
0 |
135 |
0 |
0 |
T42 |
0 |
5558 |
0 |
0 |
T43 |
0 |
2848 |
0 |
0 |
T44 |
0 |
3601 |
0 |
0 |
T59 |
0 |
96 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
0 |
0 |
0 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
29022453 |
0 |
0 |
T3 |
864 |
864 |
0 |
0 |
T4 |
791 |
648 |
0 |
0 |
T5 |
21392 |
0 |
0 |
0 |
T6 |
25052 |
0 |
0 |
0 |
T7 |
60348 |
58312 |
0 |
0 |
T8 |
26567 |
0 |
0 |
0 |
T9 |
2080 |
0 |
0 |
0 |
T10 |
15126 |
0 |
0 |
0 |
T11 |
213533 |
206808 |
0 |
0 |
T12 |
144616 |
0 |
0 |
0 |
T17 |
0 |
64352 |
0 |
0 |
T25 |
0 |
1008 |
0 |
0 |
T26 |
0 |
2520 |
0 |
0 |
T27 |
0 |
78744 |
0 |
0 |
T28 |
0 |
354616 |
0 |
0 |
T29 |
0 |
58480 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
610642 |
0 |
0 |
T4 |
791 |
66 |
0 |
0 |
T5 |
21392 |
0 |
0 |
0 |
T6 |
25052 |
0 |
0 |
0 |
T7 |
60348 |
0 |
0 |
0 |
T8 |
26567 |
0 |
0 |
0 |
T9 |
2080 |
0 |
0 |
0 |
T10 |
15126 |
0 |
0 |
0 |
T11 |
213533 |
4066 |
0 |
0 |
T12 |
144616 |
0 |
0 |
0 |
T13 |
16133 |
0 |
0 |
0 |
T17 |
0 |
1981 |
0 |
0 |
T26 |
0 |
202 |
0 |
0 |
T28 |
0 |
4746 |
0 |
0 |
T41 |
0 |
135 |
0 |
0 |
T42 |
0 |
5558 |
0 |
0 |
T43 |
0 |
2848 |
0 |
0 |
T44 |
0 |
3601 |
0 |
0 |
T59 |
0 |
96 |
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: T5 T6 T8
99 // Latch only when requests accepted
100 1/1 mask <= mask_next;
Tests: T15 T17 T46
101 1/1 end else if (valid_o && !ready_i) begin
Tests: T5 T6 T8
102 // Downstream isn't yet ready so, keep current request alive. (First come first serve)
103 unreachable mask <= ppc_out;
104 end
MISSING_ELSE
105 end
106
107 if (EnDataPort == 1) begin: gen_datapath
108 always_comb begin
109 1/1 data_o = '0;
Tests: T1 T2 T3
110 1/1 for (int i = 0 ; i < N ; i++) begin
Tests: T1 T2 T3
111 1/1 if (winner[i]) begin
Tests: T1 T2 T3
112 1/1 data_o = data_i[i];
Tests: T15 T17 T46
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 T17 T46
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 | T15,T17,T46 |
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 | T15,T17,T46 |
1 | 0 | Covered | T15,T17,T46 |
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,T8 |
1 | 0 | Unreachable | |
1 | 1 | Covered | T15,T17,T46 |
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 |
T15,T17,T46 |
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,T17,T46 |
0 |
0 |
1 |
Unreachable |
|
0 |
0 |
0 |
Covered |
T5,T6,T8 |
126 if (winner[i]) begin
-1-
127 idx_o = i[IdxW-1:0];
==>
128 end
MISSING_ELSE
==>
Branches:
-1- | Status | Tests |
1 |
Covered |
T15,T17,T46 |
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,T17,T46 |
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 |
151598662 |
121225703 |
0 |
0 |
T5 |
21392 |
21392 |
0 |
0 |
T6 |
25052 |
24592 |
0 |
0 |
T7 |
60348 |
0 |
0 |
0 |
T8 |
26567 |
26490 |
0 |
0 |
T9 |
2080 |
2080 |
0 |
0 |
T10 |
15126 |
15126 |
0 |
0 |
T11 |
213533 |
0 |
0 |
0 |
T12 |
144616 |
144500 |
0 |
0 |
T13 |
16133 |
16133 |
0 |
0 |
T14 |
65873 |
65873 |
0 |
0 |
T15 |
0 |
248469 |
0 |
0 |
T17 |
0 |
247197 |
0 |
0 |
CheckNGreaterZero_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
955 |
955 |
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 |
151598662 |
818064 |
0 |
0 |
T15 |
249312 |
2674 |
0 |
0 |
T17 |
314116 |
3632 |
0 |
0 |
T25 |
1302 |
0 |
0 |
0 |
T26 |
2520 |
0 |
0 |
0 |
T27 |
82904 |
0 |
0 |
0 |
T34 |
15578 |
0 |
0 |
0 |
T35 |
8256 |
0 |
0 |
0 |
T36 |
22424 |
0 |
0 |
0 |
T39 |
0 |
2652 |
0 |
0 |
T40 |
0 |
3165 |
0 |
0 |
T43 |
0 |
402 |
0 |
0 |
T46 |
0 |
8 |
0 |
0 |
T49 |
17836 |
0 |
0 |
0 |
T58 |
31936 |
0 |
0 |
0 |
T72 |
0 |
276 |
0 |
0 |
T73 |
0 |
980 |
0 |
0 |
T74 |
0 |
1041 |
0 |
0 |
T75 |
0 |
260 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
818064 |
0 |
0 |
T15 |
249312 |
2674 |
0 |
0 |
T17 |
314116 |
3632 |
0 |
0 |
T25 |
1302 |
0 |
0 |
0 |
T26 |
2520 |
0 |
0 |
0 |
T27 |
82904 |
0 |
0 |
0 |
T34 |
15578 |
0 |
0 |
0 |
T35 |
8256 |
0 |
0 |
0 |
T36 |
22424 |
0 |
0 |
0 |
T39 |
0 |
2652 |
0 |
0 |
T40 |
0 |
3165 |
0 |
0 |
T43 |
0 |
402 |
0 |
0 |
T46 |
0 |
8 |
0 |
0 |
T49 |
17836 |
0 |
0 |
0 |
T58 |
31936 |
0 |
0 |
0 |
T72 |
0 |
276 |
0 |
0 |
T73 |
0 |
980 |
0 |
0 |
T74 |
0 |
1041 |
0 |
0 |
T75 |
0 |
260 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
121225703 |
0 |
0 |
T5 |
21392 |
21392 |
0 |
0 |
T6 |
25052 |
24592 |
0 |
0 |
T7 |
60348 |
0 |
0 |
0 |
T8 |
26567 |
26490 |
0 |
0 |
T9 |
2080 |
2080 |
0 |
0 |
T10 |
15126 |
15126 |
0 |
0 |
T11 |
213533 |
0 |
0 |
0 |
T12 |
144616 |
144500 |
0 |
0 |
T13 |
16133 |
16133 |
0 |
0 |
T14 |
65873 |
65873 |
0 |
0 |
T15 |
0 |
248469 |
0 |
0 |
T17 |
0 |
247197 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
121225703 |
0 |
0 |
T5 |
21392 |
21392 |
0 |
0 |
T6 |
25052 |
24592 |
0 |
0 |
T7 |
60348 |
0 |
0 |
0 |
T8 |
26567 |
26490 |
0 |
0 |
T9 |
2080 |
2080 |
0 |
0 |
T10 |
15126 |
15126 |
0 |
0 |
T11 |
213533 |
0 |
0 |
0 |
T12 |
144616 |
144500 |
0 |
0 |
T13 |
16133 |
16133 |
0 |
0 |
T14 |
65873 |
65873 |
0 |
0 |
T15 |
0 |
248469 |
0 |
0 |
T17 |
0 |
247197 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
818064 |
0 |
0 |
T15 |
249312 |
2674 |
0 |
0 |
T17 |
314116 |
3632 |
0 |
0 |
T25 |
1302 |
0 |
0 |
0 |
T26 |
2520 |
0 |
0 |
0 |
T27 |
82904 |
0 |
0 |
0 |
T34 |
15578 |
0 |
0 |
0 |
T35 |
8256 |
0 |
0 |
0 |
T36 |
22424 |
0 |
0 |
0 |
T39 |
0 |
2652 |
0 |
0 |
T40 |
0 |
3165 |
0 |
0 |
T43 |
0 |
402 |
0 |
0 |
T46 |
0 |
8 |
0 |
0 |
T49 |
17836 |
0 |
0 |
0 |
T58 |
31936 |
0 |
0 |
0 |
T72 |
0 |
276 |
0 |
0 |
T73 |
0 |
980 |
0 |
0 |
T74 |
0 |
1041 |
0 |
0 |
T75 |
0 |
260 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
818064 |
0 |
0 |
T15 |
249312 |
2674 |
0 |
0 |
T17 |
314116 |
3632 |
0 |
0 |
T25 |
1302 |
0 |
0 |
0 |
T26 |
2520 |
0 |
0 |
0 |
T27 |
82904 |
0 |
0 |
0 |
T34 |
15578 |
0 |
0 |
0 |
T35 |
8256 |
0 |
0 |
0 |
T36 |
22424 |
0 |
0 |
0 |
T39 |
0 |
2652 |
0 |
0 |
T40 |
0 |
3165 |
0 |
0 |
T43 |
0 |
402 |
0 |
0 |
T46 |
0 |
8 |
0 |
0 |
T49 |
17836 |
0 |
0 |
0 |
T58 |
31936 |
0 |
0 |
0 |
T72 |
0 |
276 |
0 |
0 |
T73 |
0 |
980 |
0 |
0 |
T74 |
0 |
1041 |
0 |
0 |
T75 |
0 |
260 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
818064 |
0 |
0 |
T15 |
249312 |
2674 |
0 |
0 |
T17 |
314116 |
3632 |
0 |
0 |
T25 |
1302 |
0 |
0 |
0 |
T26 |
2520 |
0 |
0 |
0 |
T27 |
82904 |
0 |
0 |
0 |
T34 |
15578 |
0 |
0 |
0 |
T35 |
8256 |
0 |
0 |
0 |
T36 |
22424 |
0 |
0 |
0 |
T39 |
0 |
2652 |
0 |
0 |
T40 |
0 |
3165 |
0 |
0 |
T43 |
0 |
402 |
0 |
0 |
T46 |
0 |
8 |
0 |
0 |
T49 |
17836 |
0 |
0 |
0 |
T58 |
31936 |
0 |
0 |
0 |
T72 |
0 |
276 |
0 |
0 |
T73 |
0 |
980 |
0 |
0 |
T74 |
0 |
1041 |
0 |
0 |
T75 |
0 |
260 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
818064 |
0 |
0 |
T15 |
249312 |
2674 |
0 |
0 |
T17 |
314116 |
3632 |
0 |
0 |
T25 |
1302 |
0 |
0 |
0 |
T26 |
2520 |
0 |
0 |
0 |
T27 |
82904 |
0 |
0 |
0 |
T34 |
15578 |
0 |
0 |
0 |
T35 |
8256 |
0 |
0 |
0 |
T36 |
22424 |
0 |
0 |
0 |
T39 |
0 |
2652 |
0 |
0 |
T40 |
0 |
3165 |
0 |
0 |
T43 |
0 |
402 |
0 |
0 |
T46 |
0 |
8 |
0 |
0 |
T49 |
17836 |
0 |
0 |
0 |
T58 |
31936 |
0 |
0 |
0 |
T72 |
0 |
276 |
0 |
0 |
T73 |
0 |
980 |
0 |
0 |
T74 |
0 |
1041 |
0 |
0 |
T75 |
0 |
260 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
0 |
0 |
0 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
121225703 |
0 |
0 |
T5 |
21392 |
21392 |
0 |
0 |
T6 |
25052 |
24592 |
0 |
0 |
T7 |
60348 |
0 |
0 |
0 |
T8 |
26567 |
26490 |
0 |
0 |
T9 |
2080 |
2080 |
0 |
0 |
T10 |
15126 |
15126 |
0 |
0 |
T11 |
213533 |
0 |
0 |
0 |
T12 |
144616 |
144500 |
0 |
0 |
T13 |
16133 |
16133 |
0 |
0 |
T14 |
65873 |
65873 |
0 |
0 |
T15 |
0 |
248469 |
0 |
0 |
T17 |
0 |
247197 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
151598662 |
818064 |
0 |
0 |
T15 |
249312 |
2674 |
0 |
0 |
T17 |
314116 |
3632 |
0 |
0 |
T25 |
1302 |
0 |
0 |
0 |
T26 |
2520 |
0 |
0 |
0 |
T27 |
82904 |
0 |
0 |
0 |
T34 |
15578 |
0 |
0 |
0 |
T35 |
8256 |
0 |
0 |
0 |
T36 |
22424 |
0 |
0 |
0 |
T39 |
0 |
2652 |
0 |
0 |
T40 |
0 |
3165 |
0 |
0 |
T43 |
0 |
402 |
0 |
0 |
T46 |
0 |
8 |
0 |
0 |
T49 |
17836 |
0 |
0 |
0 |
T58 |
31936 |
0 |
0 |
0 |
T72 |
0 |
276 |
0 |
0 |
T73 |
0 |
980 |
0 |
0 |
T74 |
0 |
1041 |
0 |
0 |
T75 |
0 |
260 |
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 | T11,T15,T17 |
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,T11,T15 |
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 |
T11,T15,T17 |
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 |
435012153 |
434926073 |
0 |
0 |
T1 |
1404 |
1308 |
0 |
0 |
T2 |
1589 |
1496 |
0 |
0 |
T3 |
2381 |
2317 |
0 |
0 |
T4 |
2169 |
2094 |
0 |
0 |
T5 |
45620 |
45537 |
0 |
0 |
T6 |
32159 |
32066 |
0 |
0 |
T7 |
418369 |
418274 |
0 |
0 |
T8 |
56192 |
56124 |
0 |
0 |
T9 |
13544 |
13477 |
0 |
0 |
T10 |
82696 |
82596 |
0 |
0 |
CheckNGreaterZero_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
955 |
955 |
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 |
435012153 |
2284419 |
0 |
0 |
T4 |
2169 |
17 |
0 |
0 |
T5 |
45620 |
832 |
0 |
0 |
T6 |
32159 |
832 |
0 |
0 |
T7 |
418369 |
0 |
0 |
0 |
T8 |
56192 |
832 |
0 |
0 |
T9 |
13544 |
832 |
0 |
0 |
T10 |
82696 |
832 |
0 |
0 |
T11 |
174372 |
1987 |
0 |
0 |
T12 |
39977 |
832 |
0 |
0 |
T13 |
115981 |
832 |
0 |
0 |
T14 |
0 |
2368 |
0 |
0 |
GntImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
435012153 |
2284419 |
0 |
0 |
T4 |
2169 |
17 |
0 |
0 |
T5 |
45620 |
832 |
0 |
0 |
T6 |
32159 |
832 |
0 |
0 |
T7 |
418369 |
0 |
0 |
0 |
T8 |
56192 |
832 |
0 |
0 |
T9 |
13544 |
832 |
0 |
0 |
T10 |
82696 |
832 |
0 |
0 |
T11 |
174372 |
1987 |
0 |
0 |
T12 |
39977 |
832 |
0 |
0 |
T13 |
115981 |
832 |
0 |
0 |
T14 |
0 |
2368 |
0 |
0 |
GrantKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
435012153 |
434926073 |
0 |
0 |
T1 |
1404 |
1308 |
0 |
0 |
T2 |
1589 |
1496 |
0 |
0 |
T3 |
2381 |
2317 |
0 |
0 |
T4 |
2169 |
2094 |
0 |
0 |
T5 |
45620 |
45537 |
0 |
0 |
T6 |
32159 |
32066 |
0 |
0 |
T7 |
418369 |
418274 |
0 |
0 |
T8 |
56192 |
56124 |
0 |
0 |
T9 |
13544 |
13477 |
0 |
0 |
T10 |
82696 |
82596 |
0 |
0 |
IdxKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
435012153 |
434926073 |
0 |
0 |
T1 |
1404 |
1308 |
0 |
0 |
T2 |
1589 |
1496 |
0 |
0 |
T3 |
2381 |
2317 |
0 |
0 |
T4 |
2169 |
2094 |
0 |
0 |
T5 |
45620 |
45537 |
0 |
0 |
T6 |
32159 |
32066 |
0 |
0 |
T7 |
418369 |
418274 |
0 |
0 |
T8 |
56192 |
56124 |
0 |
0 |
T9 |
13544 |
13477 |
0 |
0 |
T10 |
82696 |
82596 |
0 |
0 |
IndexIsCorrect_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
435012153 |
2284419 |
0 |
0 |
T4 |
2169 |
17 |
0 |
0 |
T5 |
45620 |
832 |
0 |
0 |
T6 |
32159 |
832 |
0 |
0 |
T7 |
418369 |
0 |
0 |
0 |
T8 |
56192 |
832 |
0 |
0 |
T9 |
13544 |
832 |
0 |
0 |
T10 |
82696 |
832 |
0 |
0 |
T11 |
174372 |
1987 |
0 |
0 |
T12 |
39977 |
832 |
0 |
0 |
T13 |
115981 |
832 |
0 |
0 |
T14 |
0 |
2368 |
0 |
0 |
LockArbDecision_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
435012153 |
0 |
0 |
0 |
NoReadyValidNoGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
435012153 |
0 |
0 |
0 |
ReadyAndValidImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
435012153 |
2284419 |
0 |
0 |
T4 |
2169 |
17 |
0 |
0 |
T5 |
45620 |
832 |
0 |
0 |
T6 |
32159 |
832 |
0 |
0 |
T7 |
418369 |
0 |
0 |
0 |
T8 |
56192 |
832 |
0 |
0 |
T9 |
13544 |
832 |
0 |
0 |
T10 |
82696 |
832 |
0 |
0 |
T11 |
174372 |
1987 |
0 |
0 |
T12 |
39977 |
832 |
0 |
0 |
T13 |
115981 |
832 |
0 |
0 |
T14 |
0 |
2368 |
0 |
0 |
ReqAndReadyImplyGrant_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
435012153 |
2284419 |
0 |
0 |
T4 |
2169 |
17 |
0 |
0 |
T5 |
45620 |
832 |
0 |
0 |
T6 |
32159 |
832 |
0 |
0 |
T7 |
418369 |
0 |
0 |
0 |
T8 |
56192 |
832 |
0 |
0 |
T9 |
13544 |
832 |
0 |
0 |
T10 |
82696 |
832 |
0 |
0 |
T11 |
174372 |
1987 |
0 |
0 |
T12 |
39977 |
832 |
0 |
0 |
T13 |
115981 |
832 |
0 |
0 |
T14 |
0 |
2368 |
0 |
0 |
ReqImpliesValid_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
435012153 |
2284419 |
0 |
0 |
T4 |
2169 |
17 |
0 |
0 |
T5 |
45620 |
832 |
0 |
0 |
T6 |
32159 |
832 |
0 |
0 |
T7 |
418369 |
0 |
0 |
0 |
T8 |
56192 |
832 |
0 |
0 |
T9 |
13544 |
832 |
0 |
0 |
T10 |
82696 |
832 |
0 |
0 |
T11 |
174372 |
1987 |
0 |
0 |
T12 |
39977 |
832 |
0 |
0 |
T13 |
115981 |
832 |
0 |
0 |
T14 |
0 |
2368 |
0 |
0 |
ReqStaysHighUntilGranted0_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
435012153 |
0 |
0 |
0 |
RoundRobin_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
435012153 |
3 |
0 |
955 |
T60 |
554560 |
1 |
0 |
1 |
T61 |
0 |
1 |
0 |
0 |
T62 |
0 |
1 |
0 |
0 |
T63 |
32716 |
0 |
0 |
1 |
T64 |
662948 |
0 |
0 |
1 |
T65 |
21172 |
0 |
0 |
1 |
T66 |
53725 |
0 |
0 |
1 |
T67 |
148136 |
0 |
0 |
1 |
T68 |
4348 |
0 |
0 |
1 |
T69 |
1230 |
0 |
0 |
1 |
T70 |
1382 |
0 |
0 |
1 |
T71 |
779 |
0 |
0 |
1 |
ValidKnown_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
435012153 |
434926073 |
0 |
0 |
T1 |
1404 |
1308 |
0 |
0 |
T2 |
1589 |
1496 |
0 |
0 |
T3 |
2381 |
2317 |
0 |
0 |
T4 |
2169 |
2094 |
0 |
0 |
T5 |
45620 |
45537 |
0 |
0 |
T6 |
32159 |
32066 |
0 |
0 |
T7 |
418369 |
418274 |
0 |
0 |
T8 |
56192 |
56124 |
0 |
0 |
T9 |
13544 |
13477 |
0 |
0 |
T10 |
82696 |
82596 |
0 |
0 |
gen_data_port_assertion.DataFlow_A
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
435012153 |
2284419 |
0 |
0 |
T4 |
2169 |
17 |
0 |
0 |
T5 |
45620 |
832 |
0 |
0 |
T6 |
32159 |
832 |
0 |
0 |
T7 |
418369 |
0 |
0 |
0 |
T8 |
56192 |
832 |
0 |
0 |
T9 |
13544 |
832 |
0 |
0 |
T10 |
82696 |
832 |
0 |
0 |
T11 |
174372 |
1987 |
0 |
0 |
T12 |
39977 |
832 |
0 |
0 |
T13 |
115981 |
832 |
0 |
0 |
T14 |
0 |
2368 |
0 |
0 |