Unified Coverage Report :: Module :: spid_jedec

Module : spid_jedec

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
99.38	100.00	100.00		100.00	96.88	100.00

Source File(s) :
/workspaces/lowrisc/opentitan/scratch/earlgrey_1_0_0_2024_08_20_RC0/spi_device_2p-sim-vcs/default/sim-vcs/../src/lowrisc_ip_spi_device_0.1/rtl/spid_jedec.sv

Module self-instances :

NAME	SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
tb.dut.u_jedec	99.38	100.00	100.00		100.00	96.88	100.00

---

Module Instance : tb.dut.u_jedec

Instance :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
99.38	100.00	100.00		100.00	96.88	100.00

Instance's subtree :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
99.38	100.00	100.00		100.00	96.88	100.00

Parent :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT	NAME
92.52	95.20	84.31	97.00		90.62	95.45	dut

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 : spid_jedec

	Line No.	Total	Covered	Percent
TOTAL		47	47	100.00
CONT_ASSIGN	65	1	1	100.00
ALWAYS	73	4	4	100.00
CONT_ASSIGN	79	1	1	100.00
ALWAYS	83	4	4	100.00
ALWAYS	91	5	5	100.00
ALWAYS	101	8	8	100.00
ALWAYS	121	4	4	100.00
CONT_ASSIGN	125	1	1	100.00
ALWAYS	132	3	3	100.00
ALWAYS	138	16	16	100.00

64                        logic unused_cmd_info;
65         1/1            assign unused_cmd_info = ^{cmd_info_i , cmd_info_idx_i};
           Tests:       T1 T2 T3 
66                      
67                        //////////////
68                        // Datapath //
69                        //////////////
70                      
71                        // Jedec latch
72                        always_ff @(posedge clk_i or negedge rst_ni) begin
73         2/2              if (!rst_ni)                         jedec <= '{default: '0};
           Tests:       T1 T2 T3  | T1 T2 T3 
74         2/2              else if (cmd_sync_pulse_i) jedec <= sys_jedec_i;
           Tests:       T2 T8 T9  | T2 T8 T9 
                        MISSING_ELSE
75                        end
76                      
77                        // If num_cc is non-zero, the logic shall return CC first
78                        logic cc_needed;
79         1/1            assign cc_needed = |jedec.num_cc;
           Tests:       T1 T2 T3 
80                      
81                        logic [7:0] cc_count;
82                        always_ff @(posedge clk_i or negedge rst_ni) begin
83         2/2              if (!rst_ni) cc_count <= '0;
           Tests:       T1 T2 T3  | T1 T2 T3 
84         1/1              else if (st_q == StCC && outclk_p2s_sent_i) begin
           Tests:       T2 T8 T9 
85         1/1                cc_count <= cc_count + 1'b 1;
           Tests:       T52 T53 T49 
86                          end
                        MISSING_ELSE
87                        end
88                      
89                        // Output to Parallel-to-Serial
90                        always_ff @(posedge clk_out_i or negedge rst_out_ni) begin
91         1/1              if (!rst_out_ni) begin
           Tests:       T1 T2 T3 
92         1/1                outclk_p2s_valid_o <= 1'b 0;
           Tests:       T1 T2 T3 
93         1/1                outclk_p2s_byte_o  <= 8'h 0;
           Tests:       T1 T2 T3 
94                          end else begin
95         1/1                outclk_p2s_valid_o <= p2s_valid;
           Tests:       T2 T8 T9 
96         1/1                outclk_p2s_byte_o  <= p2s_byte;
           Tests:       T2 T8 T9 
97                          end
98                        end
99                      
100                       always_comb begin : p2s_byte_logic
101        1/1              p2s_byte = 8'h 0;
           Tests:       T1 T2 T3 
102                     
103        1/1              if (st_q == StIdle) begin
           Tests:       T1 T2 T3 
104                           // Manufacturer ID always
105        1/1                p2s_byte = (cc_needed) ? jedec.cc : jedec.jedec_id;
           Tests:       T1 T2 T3 
106        1/1              end else if (st_q == StCC) begin
           Tests:       T52 T53 T49 
107        1/1                p2s_byte = jedec.cc;
           Tests:       T52 T53 T49 
108        1/1              end else if (st_q == StJedecId) begin
           Tests:       T52 T53 T49 
109        1/1                p2s_byte = jedec.jedec_id;
           Tests:       T52 T53 T49 
110                         end else begin
111                           // based on byte_sel_q
112                           // End of the transfer but host keep toggles SCK. Sending out 0 always
113        1/1                p2s_byte = (byte_sel_q >= 2'b 10) ? 8'h 0 :
           Tests:       T52 T53 T49 
114                                      (byte_sel_q == 2'b 01) ? jedec.device_id[15:8] :
115                                                               jedec.device_id[7:0] ;
116                         end
117                       end : p2s_byte_logic
118                     
119                       // Byte selection
120                       always_ff @(posedge clk_i or negedge rst_ni) begin : byte_sel_latch
121        2/2              if (!rst_ni)        byte_sel_q <= 2'h 0; // select manufacturer id
           Tests:       T1 T2 T3  | T1 T2 T3 
122        2/2              else if (next_byte) byte_sel_q <= byte_sel_d;
           Tests:       T2 T8 T9  | T52 T53 T49 
                        MISSING_ELSE
123                       end : byte_sel_latch
124                     
125        1/1            assign byte_sel_d = (byte_sel_q == 2'b 10) ? 2'b 10 : byte_sel_q + 1'b 1;
           Tests:       T1 T2 T3 
126                     
127                       ///////////
128                       // State //
129                       ///////////
130                     
131                       always_ff @(posedge clk_i or negedge rst_ni) begin : state_latch
132        2/2              if (!rst_ni) st_q <= StIdle;
           Tests:       T1 T2 T3  | T1 T2 T3 
133        1/1              else         st_q <= st_d;
           Tests:       T2 T8 T9 
134                       end : state_latch
135                     
136                       `ASSERT_KNOWN(JedecStKnown_A, st_q)
137                       always_comb begin : next_state_logic
138        1/1              st_d = st_q;
           Tests:       T1 T2 T3 
139                     
140        1/1              p2s_valid = 1'b 0;
           Tests:       T1 T2 T3 
141        1/1              next_byte = 1'b 0;
           Tests:       T1 T2 T3 
142                     
143        1/1              unique case (st_q)
           Tests:       T1 T2 T3 
144                           StIdle: begin
145        1/1                  if (sel_dp_i == DpReadJEDEC) begin
           Tests:       T1 T2 T3 
146        1/1                    st_d = (cc_needed) ? StCC : StJedecId ;
           Tests:       T52 T53 T49 
147                     
148                               // Send out the dat
149        1/1                    p2s_valid = 1'b 1;
           Tests:       T52 T53 T49 
150                             end
                        MISSING_ELSE
151                           end
152                     
153                           StCC: begin
154                     
155                             // cc_count is increased by 1 when outclk_p2s_sent_i is asserted
156                             // outclk_p2s_sent_i asserts at the 7th beat, not 8th beat.  When
157                             // cc_count reaches to num_cc, it is the end of a byte transaction in
158                             // SCK input clock domain. So, that time state machine moves to
159                             // JedecId
160        1/1                  if (cc_count == jedec.num_cc) begin
           Tests:       T52 T53 T49 
161        1/1                    st_d = StJedecId;
           Tests:       T52 T53 T49 
162                             end
                        MISSING_ELSE
163                     
164        1/1                  p2s_valid = 1'b 1;
           Tests:       T52 T53 T49 
165                           end
166                     
167                           StJedecId: begin
168        1/1                  if (outclk_p2s_sent_i) begin
           Tests:       T52 T53 T49 
169        1/1                    st_d = StDevId;
           Tests:       T52 T53 T49 
170                             end
                        MISSING_ELSE
171                     
172        1/1                  p2s_valid = 1'b 1;
           Tests:       T52 T53 T49 
173                           end
174                     
175                           StDevId: begin
176                             // TERMINAL_STATE
177                     
178                             // Sends data
179        1/1                  p2s_valid = 1'b 1;
           Tests:       T52 T53 T49 
180                     
181        1/1                  if (outclk_p2s_sent_i) begin
           Tests:       T52 T53 T49 
182        1/1                    next_byte = 1'b 1;
           Tests:       T52 T53 T49 
183                             end
                        MISSING_ELSE
184                           end
185                     
186                           default: begin
187                             st_d = StIdle;

---

Cond Coverage for Module : spid_jedec

	Total	Covered	Percent
Conditions	29	29	100.00
Logical	29	29	100.00
Non-Logical	0	0
Event	0	0

 LINE       84
 EXPRESSION ((st_q == StCC) && outclk_p2s_sent_i)
             -------1------    --------2--------

-1-	-2-	Status	Tests
0	1	Covered	T52,T53,T49
1	0	Covered	T52,T53,T49
1	1	Covered	T52,T53,T49

 LINE       84
 SUB-EXPRESSION (st_q == StCC)
                -------1------

-1-	Status	Tests
0	Covered	T2,T8,T9
1	Covered	T52,T53,T49

 LINE       103
 EXPRESSION (st_q == StIdle)
            --------1-------

-1-	Status	Tests
0	Covered	T52,T53,T49
1	Covered	T1,T2,T3

 LINE       105
 EXPRESSION (cc_needed ? jedec.cc : jedec.jedec_id)
             ----1----

-1-	Status	Tests
0	Covered	T1,T2,T3
1	Covered	T2,T9,T15

 LINE       106
 EXPRESSION (st_q == StCC)
            -------1------

-1-	Status	Tests
0	Covered	T52,T53,T49
1	Covered	T52,T53,T49

 LINE       108
 EXPRESSION (st_q == StJedecId)
            ---------1---------

-1-	Status	Tests
0	Covered	T52,T53,T49
1	Covered	T52,T53,T49

 LINE       113
 EXPRESSION ((byte_sel_q >= 2'b10) ? 8'b0 : ((byte_sel_q == 2'b1) ? jedec.device_id[15:8] : jedec.device_id[7:0]))
             ----------1----------

-1-	Status	Tests
0	Covered	T52,T53,T49
1	Covered	T52,T53,T49

 LINE       113
 SUB-EXPRESSION ((byte_sel_q == 2'b1) ? jedec.device_id[15:8] : jedec.device_id[7:0])
                 ----------1---------

-1-	Status	Tests
0	Covered	T52,T53,T49
1	Covered	T52,T53,T49

 LINE       113
 SUB-EXPRESSION (byte_sel_q == 2'b1)
                ----------1---------

-1-	Status	Tests
0	Covered	T52,T53,T49
1	Covered	T52,T53,T49

 LINE       125
 EXPRESSION ((byte_sel_q == 2'b10) ? 2'b10 : ((byte_sel_q + 1'b1)))
             ----------1----------

-1-	Status	Tests
0	Covered	T1,T2,T3
1	Covered	T52,T53,T49

 LINE       125
 SUB-EXPRESSION (byte_sel_q == 2'b10)
                ----------1----------

-1-	Status	Tests
0	Covered	T1,T2,T3
1	Covered	T52,T53,T49

 LINE       145
 EXPRESSION (sel_dp_i == DpReadJEDEC)
            ------------1------------

-1-	Status	Tests
0	Covered	T1,T2,T3
1	Covered	T52,T53,T49

 LINE       146
 EXPRESSION (cc_needed ? StCC : StJedecId)
             ----1----

-1-	Status	Tests
0	Covered	T52,T53,T98
1	Covered	T52,T53,T49

 LINE       160
 EXPRESSION (cc_count == jedec.num_cc)
            -------------1------------

-1-	Status	Tests
0	Covered	T52,T53,T49
1	Covered	T52,T53,T49

---

FSM Coverage for Module : spid_jedec

Summary for FSM :: st_q

	Total	Covered	Percent
States	4	4	100.00	(Not included in score)
Transitions	4	4	100.00
Sequences	0	0

State, Transition and Sequence Details for FSM :: st_q

---

states	Line No.	Covered	Tests
StCC	146	Covered	T52,T53,T49
StDevId	169	Covered	T52,T53,T49
StIdle	103	Covered	T1,T2,T3
StJedecId	146	Covered	T52,T53,T49

transitions	Line No.	Covered	Tests
StCC->StJedecId	161	Covered	T52,T53,T49
StIdle->StCC	146	Covered	T52,T53,T49
StIdle->StJedecId	146	Covered	T52,T53,T98
StJedecId->StDevId	169	Covered	T52,T53,T49

---

Branch Coverage for Module : spid_jedec

	Line No.	Total	Covered	Percent
Branches		32	31	96.88
TERNARY	125	2	2	100.00
IF	73	3	3	100.00
IF	83	3	3	100.00
IF	91	2	2	100.00
IF	103	7	7	100.00
IF	121	3	3	100.00
IF	132	2	2	100.00
CASE	143	10	9	90.00

125          assign byte_sel_d = (byte_sel_q == 2'b 10) ? 2'b 10 : byte_sel_q + 1'b 1;
                                                        -1-  
                                                        ==>  
                                                        ==>  

Branches:

-1-	Status	Tests
1	Covered	T52,T53,T49
0	Covered	T1,T2,T3

73             if (!rst_ni)                         jedec <= '{default: '0};
               -1-  
               ==>
74             else if (cmd_sync_pulse_i) jedec <= sys_jedec_i;
                    -2-  
               ==>
               MISSING_ELSE
               ==>

Branches:

-1-	-2-	Status	Tests
1	-	Covered	T1,T2,T3
0	1	Covered	T2,T8,T9
0	0	Covered	T2,T8,T9

83             if (!rst_ni) cc_count <= '0;
               -1-  
               ==>
84             else if (st_q == StCC && outclk_p2s_sent_i) begin
                    -2-  
85               cc_count <= cc_count + 1'b 1;
                 ==>
86             end
               MISSING_ELSE
               ==>

Branches:

-1-	-2-	Status	Tests
1	-	Covered	T1,T2,T3
0	1	Covered	T52,T53,T49
0	0	Covered	T2,T8,T9

91             if (!rst_out_ni) begin
               -1-  
92               outclk_p2s_valid_o <= 1'b 0;
                 ==>
93               outclk_p2s_byte_o  <= 8'h 0;
94             end else begin
95               outclk_p2s_valid_o <= p2s_valid;
                 ==>

Branches:

-1-	Status	Tests
1	Covered	T1,T2,T3
0	Covered	T2,T8,T9

103            if (st_q == StIdle) begin
               -1-  
104              // Manufacturer ID always
105              p2s_byte = (cc_needed) ? jedec.cc : jedec.jedec_id;
                                        -2-  
                                        ==>  
                                        ==>  
106            end else if (st_q == StCC) begin
                        -3-  
107              p2s_byte = jedec.cc;
                 ==>
108            end else if (st_q == StJedecId) begin
                        -4-  
109              p2s_byte = jedec.jedec_id;
                 ==>
110            end else begin
111              // based on byte_sel_q
112              // End of the transfer but host keep toggles SCK. Sending out 0 always
113              p2s_byte = (byte_sel_q >= 2'b 10) ? 8'h 0 :
                                                   -5-  
                                                   ==>  
114                         (byte_sel_q == 2'b 01) ? jedec.device_id[15:8] :
                                                   -6-  
                                                   ==>  
                                                   ==>  

Branches:

-1-	-2-	-3-	-4-	-5-	-6-	Status	Tests
1	1	-	-	-	-	Covered	T2,T9,T15
1	0	-	-	-	-	Covered	T1,T2,T3
0	-	1	-	-	-	Covered	T52,T53,T49
0	-	0	1	-	-	Covered	T52,T53,T49
0	-	0	0	1	-	Covered	T52,T53,T49
0	-	0	0	0	1	Covered	T52,T53,T49
0	-	0	0	0	0	Covered	T52,T53,T49

121            if (!rst_ni)        byte_sel_q <= 2'h 0; // select manufacturer id
               -1-  
               ==>
122            else if (next_byte) byte_sel_q <= byte_sel_d;
                    -2-  
               ==>
               MISSING_ELSE
               ==>

Branches:

-1-	-2-	Status	Tests
1	-	Covered	T1,T2,T3
0	1	Covered	T52,T53,T49
0	0	Covered	T2,T8,T9

132            if (!rst_ni) st_q <= StIdle;
               -1-  
               ==>
133            else         st_q <= st_d;
               ==>

Branches:

-1-	Status	Tests
1	Covered	T1,T2,T3
0	Covered	T2,T8,T9

143            unique case (st_q)
                      -1-  
144              StIdle: begin
145                if (sel_dp_i == DpReadJEDEC) begin
                   -2-  
146                  st_d = (cc_needed) ? StCC : StJedecId ;
                                        -3-  
                                        ==>  
                                        ==>  
147        
148                  // Send out the dat
149                  p2s_valid = 1'b 1;
150                end
                   MISSING_ELSE
                   ==>
151              end
152        
153              StCC: begin
154        
155                // cc_count is increased by 1 when outclk_p2s_sent_i is asserted
156                // outclk_p2s_sent_i asserts at the 7th beat, not 8th beat.  When
157                // cc_count reaches to num_cc, it is the end of a byte transaction in
158                // SCK input clock domain. So, that time state machine moves to
159                // JedecId
160                if (cc_count == jedec.num_cc) begin
                   -4-  
161                  st_d = StJedecId;
                     ==>
162                end
                   MISSING_ELSE
                   ==>
163        
164                p2s_valid = 1'b 1;
165              end
166        
167              StJedecId: begin
168                if (outclk_p2s_sent_i) begin
                   -5-  
169                  st_d = StDevId;
                     ==>
170                end
                   MISSING_ELSE
                   ==>
171        
172                p2s_valid = 1'b 1;
173              end
174        
175              StDevId: begin
176                // TERMINAL_STATE
177        
178                // Sends data
179                p2s_valid = 1'b 1;
180        
181                if (outclk_p2s_sent_i) begin
                   -6-  
182                  next_byte = 1'b 1;
                     ==>
183                end
                   MISSING_ELSE
                   ==>
184              end
185        
186              default: begin
187                st_d = StIdle;
                   ==>

Branches:

-1-	-2-	-3-	-4-	-5-	-6-	Status	Tests
StIdle	1	1	-	-	-	Covered	T52,T53,T49
StIdle	1	0	-	-	-	Covered	T52,T53,T98
StIdle	0	-	-	-	-	Covered	T1,T2,T3
StCC	-	-	1	-	-	Covered	T52,T53,T49
StCC	-	-	0	-	-	Covered	T52,T53,T49
StJedecId	-	-	-	1	-	Covered	T52,T53,T49
StJedecId	-	-	-	0	-	Covered	T52,T53,T49
StDevId	-	-	-	-	1	Covered	T52,T53,T49
StDevId	-	-	-	-	0	Covered	T52,T53,T49
default	-	-	-	-	-	Not Covered

---

Assert Coverage for Module : spid_jedec

	Total	Attempted	Percent	Succeeded/Matched	Percent
Assertions	1	1	100.00	1	100.00
Cover properties	0	0		0
Cover sequences	0	0		0
Total	1	1	100.00	1	100.00

---

Assertion Details

Name	Attempts	Real Successes	Failures	Incomplete
JedecStKnown_A	148386066	118678003	0	0

JedecStKnown_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	148386066	118678003	0	0
T2	81023	36805	0	0
T4	72	0	0	0
T5	216	0	0	0
T8	96	96	0	0
T9	80	80	0	0
T12	829	0	0	0
T14	24001	0	0	0
T15	32	32	0	0
T16	116248	116248	0	0
T17	105809	0	0	0
T18	0	26912	0	0
T20	0	10930	0	0
T21	0	19045	0	0
T22	0	21893	0	0
T23	0	46304	0	0