Unified Coverage Report :: Module :: prim_gf_mult

Module : prim_gf_mult

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
100.00	100.00	100.00			100.00	100.00

Source File(s) :
/workspaces/repo/scratch/os_regression_2024_08_28/flash_ctrl-sim-vcs/default/sim-vcs/../src/lowrisc_prim_gf_mult_0/rtl/prim_gf_mult.sv

Module self-instances :

NAME	SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
tb.dut.u_eflash.u_scramble.gen_gf_mult.u_mult	100.00	100.00	100.00			100.00	100.00

---

Module Instance : tb.dut.u_eflash.u_scramble.gen_gf_mult.u_mult

Instance :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
100.00	100.00	100.00			100.00	100.00

Instance's subtree :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
100.00	100.00	100.00			100.00	100.00

Parent :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT	NAME
95.40	100.00	86.21			100.00		u_scramble

Subtrees :

NAME	SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
no children

---

Since this is the module's only instance, the coverage report is the same as for the module.

Line Coverage for Module : prim_gf_mult

	Line No.	Total	Covered	Percent
TOTAL		30	30	100.00
CONT_ASSIGN	82	1	1	100.00
CONT_ASSIGN	83	1	1	100.00
CONT_ASSIGN	85	1	1	100.00
CONT_ASSIGN	97	0	0
ALWAYS	101	5	5	100.00
ALWAYS	111	7	7	100.00
CONT_ASSIGN	125	1	1	100.00
CONT_ASSIGN	126	1	1	100.00
CONT_ASSIGN	129	1	1	100.00
ROUTINE	137	2	2	100.00
ROUTINE	148	5	5	100.00
ROUTINE	163	5	5	100.00

81                        // select current slice
82         1/1            assign reformat_data = operand_b_i;
           Tests:       T1 T2 T3 
83         1/1            assign op_i_slice = reformat_data[cnt];
           Tests:       T1 T2 T3 
84                      
85         1/1            assign first = cnt == 0;
           Tests:       T1 T2 T3 
86                      
87                        if (StagesPerCycle == Width) begin : gen_all_combo
88                      
89                          assign ack_o = 1'b1;
90                          assign cnt = '0;
91                          assign prod_q = '0;
92                          assign vector = '0;
93                      
94                        end else begin : gen_decomposed
95                      
96                          // multiply is done
97         unreachable      assign ack_o = int'(cnt) == (Loops - 1);
98                      
99                          // advance the stage count and also advance the bit position count
100                         always_ff @(posedge clk_i or negedge rst_ni) begin
101        1/1                if (!rst_ni) begin
           Tests:       T1 T2 T3 
102        1/1                  cnt <= '0;
           Tests:       T1 T2 T3 
103        1/1                end else if (req_i && ack_o) begin
           Tests:       T1 T2 T3 
104        unreachable          cnt <= '0;
105        1/1                end else if (req_i && int'(cnt) < (Loops - 1)) begin
           Tests:       T1 T2 T3 
106        1/1                  cnt <= cnt + 1'b1;
           Tests:       T1 T2 T3 
107                           end
                        MISSING_ELSE
108                         end
109                     
110                         always_ff @(posedge clk_i or negedge rst_ni) begin
111        1/1                if (!rst_ni) begin
           Tests:       T1 T2 T3 
112        1/1                  prod_q <= '0;
           Tests:       T1 T2 T3 
113        1/1                  vector <= '0;
           Tests:       T1 T2 T3 
114        1/1                end else if (ack_o) begin
           Tests:       T1 T2 T3 
115        unreachable          prod_q <= '0;
116        unreachable          vector <= '0;
117        1/1                end else if (req_i) begin
           Tests:       T1 T2 T3 
118        1/1                  prod_q <= prod_d;
           Tests:       T1 T2 T3 
119        1/1                  vector <= matrix[StagesPerCycle-1];
           Tests:       T1 T2 T3 
120                           end
                        MISSING_ELSE
121                         end
122                       end
123                     
124                     
125        1/1            assign matrix = first ? gen_matrix(operand_a_i, 1'b1) : gen_matrix(vector, 1'b0);
           Tests:       T1 T2 T3 
126        1/1            assign prod_d = prod_q ^ gf_mult(matrix, op_i_slice);
           Tests:       T1 T2 T3 
127                     
128                       // The output is not toggled until it is ready
129        1/1            assign prod_o = ack_o ? prod_d : operand_a_i;
           Tests:       T1 T2 T3 
130                     
131                     
132                       // GF(2^Width) * x
133                       function automatic logic [Width-1:0] gf_mult2(
134                         logic [Width-1:0] operand
135                       );
136                         logic [Width-1:0] mult_out;
137        1/1              mult_out = operand[Width-1] ? (operand << 1) ^ IPoly : (operand << 1);
           Tests:       T1 T2 T3 
138        1/1              return mult_out;
           Tests:       T1 T2 T3 
139                       endfunction
140                     
141                       // Matrix generate step
142                       function automatic logic [StagesPerCycle-1:0][Width-1:0] gen_matrix(
143                         logic [Width-1:0] seed,
144                         logic init
145                       );
146                         logic [StagesPerCycle-1:0][Width-1:0] matrix_out;
147                     
148        1/1              matrix_out[0] = init ? seed : gf_mult2(seed);
           Tests:       T1 T2 T3 
149        1/1              matrix_out[StagesPerCycle-1:1] = '0;
           Tests:       T1 T2 T3 
150        1/1              for (int i = 1; i < StagesPerCycle; i++) begin
           Tests:       T1 T2 T3 
151        1/1                matrix_out[i] = gf_mult2(matrix_out[i-1]);
           Tests:       T1 T2 T3 
152                         end
153        1/1              return matrix_out;
           Tests:       T1 T2 T3 
154                       endfunction
155                     
156                       // Galois multiply step
157                       function automatic logic [Width-1:0] gf_mult(
158                         logic [StagesPerCycle-1:0][Width-1:0] matrix_,
159                         logic [StagesPerCycle-1:0] operand
160                       );
161                         logic [Width-1:0] mult_out;
162                         logic [Width-1:0] add_vector;
163        1/1              mult_out = '0;
           Tests:       T1 T2 T3 
164        1/1              for (int i = 0; i < StagesPerCycle; i++) begin
           Tests:       T1 T2 T3 
165        1/1                add_vector = operand[i] ? matrix_[i] : '0;
           Tests:       T1 T2 T3 
166        1/1                mult_out = mult_out ^ add_vector;
           Tests:       T1 T2 T3 
167                         end
168        1/1              return mult_out;
           Tests:       T1 T2 T3 

---

Cond Coverage for Module : prim_gf_mult

	Total	Covered	Percent
Conditions	15	15	100.00
Logical	15	15	100.00
Non-Logical	0	0
Event	0	0

 LINE       85
 EXPRESSION (cnt == 1'b0)
            ------1------

-1-	Status	Tests
0	Covered	T1,T2,T3
1	Covered	T1,T2,T3

 LINE       97
 EXPRESSION (int'(cnt) == (Loops - 1))
            -------------1------------

-1-	Status	Tests
0	Covered	T1,T2,T3
1	Unreachable	T1,T2,T3

 LINE       103
 EXPRESSION (req_i && ack_o)
             --1--    --2--

-1-	-2-	Status	Tests
0	1	Unreachable
1	0	Covered	T1,T2,T3
1	1	Unreachable	T1,T2,T3

 LINE       105
 EXPRESSION (req_i && (int'(cnt) < (Loops - 1)))
             --1--    ------------2------------

-1-	-2-	Status	Tests
0	1	Covered	T1,T2,T3
1	0	Unreachable
1	1	Covered	T1,T2,T3

 LINE       125
 EXPRESSION (first ? prim_gf_mult.gen_matrix(operand_a_i, 1'b1) : prim_gf_mult.gen_matrix(vector, 1'b0))
             --1--

-1-	Status	Tests
0	Covered	T1,T2,T3
1	Covered	T1,T2,T3

 LINE       129
 EXPRESSION (ack_o ? prod_d : operand_a_i)
             --1--

-1-	Status	Tests
0	Covered	T1,T2,T3
1	Unreachable	T1,T2,T3

 LINE       137
 EXPRESSION (operand[(Width - 1)] ? (((operand << 1) ^ IPoly)) : ((operand << 1)))
             ----------1---------

-1-	Status	Tests
0	Covered	T1,T2,T3
1	Covered	T1,T2,T3

 LINE       148
 EXPRESSION (init ? seed : gf_mult2(seed))
             --1-

-1-	Status	Tests
0	Covered	T1,T2,T3
1	Covered	T1,T2,T3

 LINE       165
 EXPRESSION (operand[i] ? matrix_[i] : '0)
             -----1----

-1-	Status	Tests
0	Covered	T2,T19,T20
1	Covered	T1,T2,T3

---

Branch Coverage for Module : prim_gf_mult

	Line No.	Total	Covered	Percent
Branches		15	15	100.00
TERNARY	125	2	2	100.00
TERNARY	129	1	1	100.00
IF	101	3	3	100.00
IF	111	3	3	100.00
TERNARY	137	2	2	100.00
TERNARY	148	2	2	100.00
TERNARY	165	2	2	100.00

125          assign matrix = first ? gen_matrix(operand_a_i, 1'b1) : gen_matrix(vector, 1'b0);
                                   -1-  
                                   ==>  
                                   ==>  

Branches:

-1-	Status	Tests
1	Covered	T1,T2,T3
0	Covered	T1,T2,T3

129          assign prod_o = ack_o ? prod_d : operand_a_i;
                                   -1-  
                                   ==> (Unreachable)  
                                   ==>  

Branches:

-1-	Status	Tests
1	Unreachable	T1,T2,T3
0	Covered	T1,T2,T3

101              if (!rst_ni) begin
                 -1-  
102                cnt <= '0;
                   ==>
103              end else if (req_i && ack_o) begin
                          -2-  
104                cnt <= '0;
                   ==> (Unreachable)
105              end else if (req_i && int'(cnt) < (Loops - 1)) begin
                          -3-  
106                cnt <= cnt + 1'b1;
                   ==>
107              end
                 MISSING_ELSE
                 ==>

Branches:

-1-	-2-	-3-	Status	Tests
1	-	-	Covered	T1,T2,T3
0	1	-	Unreachable	T1,T2,T3
0	0	1	Covered	T1,T2,T3
0	0	0	Covered	T1,T2,T3

111              if (!rst_ni) begin
                 -1-  
112                prod_q <= '0;
                   ==>
113                vector <= '0;
114              end else if (ack_o) begin
                          -2-  
115                prod_q <= '0;
                   ==> (Unreachable)
116                vector <= '0;
117              end else if (req_i) begin
                          -3-  
118                prod_q <= prod_d;
                   ==>
119                vector <= matrix[StagesPerCycle-1];
120              end
                 MISSING_ELSE
                 ==>

Branches:

-1-	-2-	-3-	Status	Tests
1	-	-	Covered	T1,T2,T3
0	1	-	Unreachable	T1,T2,T3
0	0	1	Covered	T1,T2,T3
0	0	0	Covered	T1,T2,T3

137            mult_out = operand[Width-1] ? (operand << 1) ^ IPoly : (operand << 1);
                                           -1-  
                                           ==>  
                                           ==>  

Branches:

-1-	Status	Tests
1	Covered	T1,T2,T3
0	Covered	T1,T2,T3

148            matrix_out[0] = init ? seed : gf_mult2(seed);
                                    -1-  
                                    ==>  
                                    ==>  

Branches:

-1-	Status	Tests
1	Covered	T1,T2,T3
0	Covered	T1,T2,T3

165              add_vector = operand[i] ? matrix_[i] : '0;
                                         -1-  
                                         ==>  
                                         ==>  

Branches:

-1-	Status	Tests
1	Covered	T1,T2,T3
0	Covered	T2,T19,T20

---

Assert Coverage for Module : prim_gf_mult

	Total	Attempted	Percent	Succeeded/Matched	Percent
Assertions	2	2	100.00	2	100.00
Cover properties	0	0		0
Cover sequences	0	0		0
Total	2	2	100.00	2	100.00

---

Assertion Details

Name	Attempts	Real Successes	Failures	Incomplete
IntegerLoops_A	1057	1057	0	0
StagePow2_A	1057	1057	0	0

IntegerLoops_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	1057	1057	0	0
T1	1	1	0	0
T2	1	1	0	0
T3	1	1	0	0
T4	1	1	0	0
T7	1	1	0	0
T12	1	1	0	0
T17	1	1	0	0
T18	1	1	0	0
T19	1	1	0	0
T20	1	1	0	0

StagePow2_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	1057	1057	0	0
T1	1	1	0	0
T2	1	1	0	0
T3	1	1	0	0
T4	1	1	0	0
T7	1	1	0	0
T12	1	1	0	0
T17	1	1	0	0
T18	1	1	0	0
T19	1	1	0	0
T20	1	1	0	0