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Module Instance : tb.dut.u_reg.u_adc_chn1_filter_ctl_7_cdc.u_arb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
100.00 100.00 100.00


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
100.00 100.00 100.00 100.00 100.00


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
97.73 100.00 90.91 100.00 100.00 u_adc_chn1_filter_ctl_7_cdc


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
gen_passthru.u_dst_to_src_ack 100.00 100.00 100.00 100.00 100.00


Module Instance : tb.dut.u_reg.u_adc_chn_val_0_cdc.u_arb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
83.73 90.00 66.67 78.26 100.00


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
87.67 94.90 67.39 88.37 100.00


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
78.29 94.12 85.71 83.33 50.00 u_adc_chn_val_0_cdc


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
gen_wr_req.u_dst_update_sync 93.75 100.00 75.00 100.00 100.00


Module Instance : tb.dut.u_reg.u_adc_chn_val_1_cdc.u_arb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
83.73 90.00 66.67 78.26 100.00


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
87.67 94.90 67.39 88.37 100.00


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
78.29 94.12 85.71 83.33 50.00 u_adc_chn_val_1_cdc


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
gen_wr_req.u_dst_update_sync 93.75 100.00 75.00 100.00 100.00


Module Instance : tb.dut.u_reg.u_adc_wakeup_ctl_cdc.u_arb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
100.00 100.00 100.00


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
100.00 100.00 100.00 100.00 100.00


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
97.73 100.00 90.91 100.00 100.00 u_adc_wakeup_ctl_cdc


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
gen_passthru.u_dst_to_src_ack 100.00 100.00 100.00 100.00 100.00


Module Instance : tb.dut.u_reg.u_filter_status_cdc.u_arb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
97.72 100.00 95.24 95.65 100.00


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
97.79 100.00 93.48 97.67 100.00


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.43 100.00 85.71 100.00 100.00 u_filter_status_cdc


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
gen_wr_req.u_dst_update_sync 93.75 100.00 75.00 100.00 100.00


Module Instance : tb.dut.u_reg.u_adc_fsm_state_cdc.u_arb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
77.58 95.65 78.95 85.71 50.00


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
86.03 97.87 78.57 92.68 75.00


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.43 100.00 85.71 100.00 100.00 u_adc_fsm_state_cdc


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
gen_wr_req.u_dst_update_sync 93.75 100.00 75.00 100.00 100.00

Go back
Module Instances:
tb.dut.u_reg.u_adc_chn1_filter_ctl_7_cdc.u_arb
tb.dut.u_reg.u_adc_chn_val_0_cdc.u_arb
tb.dut.u_reg.u_adc_chn_val_1_cdc.u_arb
tb.dut.u_reg.u_adc_wakeup_ctl_cdc.u_arb
tb.dut.u_reg.u_filter_status_cdc.u_arb
tb.dut.u_reg.u_adc_fsm_state_cdc.u_arb
Line Coverage for Instance : tb.dut.u_reg.u_adc_chn1_filter_ctl_7_cdc.u_arb
Line No.TotalCoveredPercent
TOTAL33100.00
CONT_ASSIGN10011100.00
CONT_ASSIGN28311100.00
CONT_ASSIGN28411100.00
CONT_ASSIGN29900

99 logic dst_update; 100 1/1 assign dst_update = dst_update_i & (dst_qs_o != dst_ds_i); Tests: T1 T2 T3  101 102 if (DstWrReq) begin : gen_wr_req 103 logic dst_lat_q; 104 logic dst_lat_d; 105 logic dst_update_req; 106 logic dst_update_ack; 107 req_sel_e id_q; 108 109 state_e state_q, state_d; 110 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 111 if (!rst_dst_ni) begin 112 state_q <= StIdle; 113 end else begin 114 state_q <= state_d; 115 end 116 end 117 118 logic busy; 119 logic dst_req_q, dst_req; 120 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 121 if (!rst_dst_ni) begin 122 dst_req_q <= '0; 123 end else if (dst_req_q && dst_lat_d) begin 124 // if request is held, when the transaction starts, 125 // automatically clear. 126 // dst_lat_d is safe to used here because dst_req_q, if set, 127 // always has priority over other hardware based events. 128 dst_req_q <= '0; 129 end else if (dst_req_i && !dst_req_q && busy) begin 130 // if destination request arrives when a handshake event 131 // is already ongoing, hold on to request and send later 132 dst_req_q <= 1'b1; 133 end 134 end 135 assign dst_req = dst_req_q | dst_req_i; 136 137 // Hold data at the beginning of a transaction 138 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 139 if (!rst_dst_ni) begin 140 dst_qs_o <= ResetVal; 141 end else if (dst_lat_d) begin 142 dst_qs_o <= dst_ds_i; 143 end else if (dst_lat_q) begin 144 dst_qs_o <= dst_qs_i; 145 end 146 end 147 148 // Which type of transaction is being ack'd back? 149 // 0 - software initiated request 150 // 1 - hardware initiated request 151 // The id information is used by prim_reg_cdc to disambiguate 152 // simultaneous updates from software and hardware. 153 // See scenario 2 case 3 for an example of how this is handled. 154 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 155 if (!rst_dst_ni) begin 156 id_q <= SelSwReq; 157 end else if (dst_update_req && dst_update_ack) begin 158 id_q <= SelSwReq; 159 end else if (dst_req && dst_lat_d) begin 160 id_q <= SelSwReq; 161 end else if (!dst_req && dst_lat_d) begin 162 id_q <= SelHwReq; 163 end else if (dst_lat_q) begin 164 id_q <= SelHwReq; 165 end 166 end 167 168 // if a destination update is received when the system is idle and there is no 169 // software side request, hw update must be selected. 170 `ASSERT(DstUpdateReqCheck_A, ##1 dst_update & !dst_req & !busy |=> id_q == SelHwReq, 171 clk_dst_i, !rst_dst_ni) 172 173 // if hw select was chosen, then it must be the case there was a destination update 174 // indication or there was a difference between the transit register and the 175 // latest incoming value. 176 `ASSERT(HwIdSelCheck_A, $rose(id_q == SelHwReq) |-> $past(dst_update_i, 1) || 177 $past(dst_lat_q, 1), 178 clk_dst_i, !rst_dst_ni) 179 180 181 // send out prim_subreg request only when proceeding 182 // with software request 183 assign dst_req_o = ~busy & dst_req; 184 185 logic dst_hold_req; 186 always_comb begin 187 state_d = state_q; 188 dst_hold_req = '0; 189 190 // depending on when the request is received, we 191 // may latch d or q. 192 dst_lat_q = '0; 193 dst_lat_d = '0; 194 195 busy = 1'b1; 196 197 unique case (state_q) 198 StIdle: begin 199 busy = '0; 200 if (dst_req) begin 201 // there's a software issued request for change 202 state_d = StWait; 203 dst_lat_d = 1'b1; 204 end else if (dst_update) begin 205 state_d = StWait; 206 dst_lat_d = 1'b1; 207 end else if (dst_qs_o != dst_qs_i) begin 208 // there's a direct destination update 209 // that was blocked by an ongoing transaction 210 state_d = StWait; 211 dst_lat_q = 1'b1; 212 end 213 end 214 215 StWait: begin 216 dst_hold_req = 1'b1; 217 if (dst_update_ack) begin 218 state_d = StIdle; 219 end 220 end 221 222 default: begin 223 state_d = StIdle; 224 end 225 endcase // unique case (state_q) 226 end // always_comb 227 228 assign dst_update_req = dst_hold_req | dst_lat_d | dst_lat_q; 229 logic src_req; 230 prim_sync_reqack u_dst_update_sync ( 231 .clk_src_i(clk_dst_i), 232 .rst_src_ni(rst_dst_ni), 233 .clk_dst_i(clk_src_i), 234 .rst_dst_ni(rst_src_ni), 235 .req_chk_i(1'b1), 236 .src_req_i(dst_update_req), 237 .src_ack_o(dst_update_ack), 238 .dst_req_o(src_req), 239 // immediate ack 240 .dst_ack_i(src_req) 241 ); 242 243 assign src_ack_o = src_req & (id_q == SelSwReq); 244 assign src_update_o = src_req & (id_q == SelHwReq); 245 246 // once hardware makes an update request, we must eventually see an update pulse 247 `ifdef FPV_ON 248 `ASSERT(ReqTimeout_A, $rose(id_q == SelHwReq) |-> s_eventually(src_update_o), 249 clk_src_i, !rst_src_ni) 250 // TODO: #14913 check if we can add additional sim assertions. 251 `endif 252 253 `ifdef FPV_ON 254 //VCS coverage off 255 // pragma coverage off 256 257 logic async_flag; 258 always_ff @(posedge clk_dst_i or negedge rst_dst_ni or posedge src_update_o) begin 259 if (!rst_dst_ni) begin 260 async_flag <= '0; 261 end else if (src_update_o) begin 262 async_flag <= '0; 263 end else if (dst_update && !dst_req_o && !busy) begin 264 async_flag <= 1'b1; 265 end 266 end 267 268 //VCS coverage on 269 // pragma coverage on 270 271 // once hardware makes an update request, we must eventually see an update pulse 272 // TODO: #14913 check if we can add additional sim assertions. 273 `ASSERT(UpdateTimeout_A, $rose(async_flag) |-> s_eventually(src_update_o), 274 clk_src_i, !rst_src_ni) 275 `endif 276 277 end else begin : gen_passthru 278 // when there is no possibility of conflicting HW transactions, 279 // we can assume that dst_qs_i will only ever take on the value 280 // that is directly related to the transaction. As a result, 281 // there is no need to latch further, and the end destination 282 // can in fact be used as the holding register. 283 1/1 assign dst_qs_o = dst_qs_i; Tests: T1 T2 T3  284 1/1 assign dst_req_o = dst_req_i; Tests: T1 T2 T3  285 286 // since there are no hw transactions, src_update_o is always '0 287 assign src_update_o = '0; 288 289 prim_pulse_sync u_dst_to_src_ack ( 290 .clk_src_i(clk_dst_i), 291 .rst_src_ni(rst_dst_ni), 292 .clk_dst_i(clk_src_i), 293 .rst_dst_ni(rst_src_ni), 294 .src_pulse_i(dst_req_i), 295 .dst_pulse_o(src_ack_o) 296 ); 297 298 logic unused_sigs; 299 unreachable assign unused_sigs = |{dst_ds_i, dst_update};

Cond Coverage for Instance : tb.dut.u_reg.u_adc_chn1_filter_ctl_7_cdc.u_arb
TotalCoveredPercent
Conditions33100.00
Logical33100.00
Non-Logical00
Event00

 LINE       100
 EXPRESSION (dst_update_i & (dst_qs_o != dst_ds_i))
             ------1-----   -----------2----------
-1--2-StatusTests
01CoveredT6,T12,T14
10Unreachable
11Unreachable

 LINE       100
 SUB-EXPRESSION (dst_qs_o != dst_ds_i)
                -----------1----------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT6,T12,T14
Line Coverage for Instance : tb.dut.u_reg.u_adc_chn_val_0_cdc.u_arb
Line No.TotalCoveredPercent
TOTAL504590.00
CONT_ASSIGN10011100.00
ALWAYS11133100.00
ALWAYS1216466.67
CONT_ASSIGN13511100.00
ALWAYS13966100.00
ALWAYS15510990.00
CONT_ASSIGN18311100.00
ALWAYS187191789.47
CONT_ASSIGN22811100.00
CONT_ASSIGN24311100.00
CONT_ASSIGN24411100.00

99 logic dst_update; 100 1/1 assign dst_update = dst_update_i & (dst_qs_o != dst_ds_i); Tests: T1 T2 T3  101 102 if (DstWrReq) begin : gen_wr_req 103 logic dst_lat_q; 104 logic dst_lat_d; 105 logic dst_update_req; 106 logic dst_update_ack; 107 req_sel_e id_q; 108 109 state_e state_q, state_d; 110 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 111 1/1 if (!rst_dst_ni) begin Tests: T1 T2 T3  112 1/1 state_q <= StIdle; Tests: T1 T2 T3  113 end else begin 114 1/1 state_q <= state_d; Tests: T1 T2 T3  115 end 116 end 117 118 logic busy; 119 logic dst_req_q, dst_req; 120 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 121 1/1 if (!rst_dst_ni) begin Tests: T1 T2 T3  122 1/1 dst_req_q <= '0; Tests: T1 T2 T3  123 1/1 end else if (dst_req_q && dst_lat_d) begin Tests: T1 T2 T3  124 // if request is held, when the transaction starts, 125 // automatically clear. 126 // dst_lat_d is safe to used here because dst_req_q, if set, 127 // always has priority over other hardware based events. 128 0/1 ==> dst_req_q <= '0; 129 1/1 end else if (dst_req_i && !dst_req_q && busy) begin Tests: T1 T2 T3  130 // if destination request arrives when a handshake event 131 // is already ongoing, hold on to request and send later 132 0/1 ==> dst_req_q <= 1'b1; 133 end MISSING_ELSE 134 end 135 1/1 assign dst_req = dst_req_q | dst_req_i; Tests: T1 T2 T3  136 137 // Hold data at the beginning of a transaction 138 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 139 1/1 if (!rst_dst_ni) begin Tests: T1 T2 T3  140 1/1 dst_qs_o <= ResetVal; Tests: T1 T2 T3  141 1/1 end else if (dst_lat_d) begin Tests: T1 T2 T3  142 1/1 dst_qs_o <= dst_ds_i; Tests: T4 T5 T6  143 1/1 end else if (dst_lat_q) begin Tests: T1 T2 T3  144 1/1 dst_qs_o <= dst_qs_i; Tests: T15 T18 T19  145 end MISSING_ELSE 146 end 147 148 // Which type of transaction is being ack'd back? 149 // 0 - software initiated request 150 // 1 - hardware initiated request 151 // The id information is used by prim_reg_cdc to disambiguate 152 // simultaneous updates from software and hardware. 153 // See scenario 2 case 3 for an example of how this is handled. 154 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 155 1/1 if (!rst_dst_ni) begin Tests: T1 T2 T3  156 1/1 id_q <= SelSwReq; Tests: T1 T2 T3  157 1/1 end else if (dst_update_req && dst_update_ack) begin Tests: T1 T2 T3  158 1/1 id_q <= SelSwReq; Tests: T4 T5 T6  159 1/1 end else if (dst_req && dst_lat_d) begin Tests: T1 T2 T3  160 0/1 ==> id_q <= SelSwReq; 161 1/1 end else if (!dst_req && dst_lat_d) begin Tests: T1 T2 T3  162 1/1 id_q <= SelHwReq; Tests: T4 T5 T6  163 1/1 end else if (dst_lat_q) begin Tests: T1 T2 T3  164 1/1 id_q <= SelHwReq; Tests: T15 T18 T19  165 end MISSING_ELSE 166 end 167 168 // if a destination update is received when the system is idle and there is no 169 // software side request, hw update must be selected. 170 `ASSERT(DstUpdateReqCheck_A, ##1 dst_update & !dst_req & !busy |=> id_q == SelHwReq, 171 clk_dst_i, !rst_dst_ni) 172 173 // if hw select was chosen, then it must be the case there was a destination update 174 // indication or there was a difference between the transit register and the 175 // latest incoming value. 176 `ASSERT(HwIdSelCheck_A, $rose(id_q == SelHwReq) |-> $past(dst_update_i, 1) || 177 $past(dst_lat_q, 1), 178 clk_dst_i, !rst_dst_ni) 179 180 181 // send out prim_subreg request only when proceeding 182 // with software request 183 1/1 assign dst_req_o = ~busy & dst_req; Tests: T1 T2 T3  184 185 logic dst_hold_req; 186 always_comb begin 187 1/1 state_d = state_q; Tests: T1 T2 T3  188 1/1 dst_hold_req = '0; Tests: T1 T2 T3  189 190 // depending on when the request is received, we 191 // may latch d or q. 192 1/1 dst_lat_q = '0; Tests: T1 T2 T3  193 1/1 dst_lat_d = '0; Tests: T1 T2 T3  194 195 1/1 busy = 1'b1; Tests: T1 T2 T3  196 197 1/1 unique case (state_q) Tests: T1 T2 T3  198 StIdle: begin 199 1/1 busy = '0; Tests: T1 T2 T3  200 1/1 if (dst_req) begin Tests: T1 T2 T3  201 // there's a software issued request for change 202 0/1 ==> state_d = StWait; 203 0/1 ==> dst_lat_d = 1'b1; 204 1/1 end else if (dst_update) begin Tests: T1 T2 T3  205 1/1 state_d = StWait; Tests: T4 T5 T6  206 1/1 dst_lat_d = 1'b1; Tests: T4 T5 T6  207 1/1 end else if (dst_qs_o != dst_qs_i) begin Tests: T1 T2 T3  208 // there's a direct destination update 209 // that was blocked by an ongoing transaction 210 1/1 state_d = StWait; Tests: T15 T18 T19  211 1/1 dst_lat_q = 1'b1; Tests: T15 T18 T19  212 end MISSING_ELSE 213 end 214 215 StWait: begin 216 1/1 dst_hold_req = 1'b1; Tests: T4 T5 T6  217 1/1 if (dst_update_ack) begin Tests: T4 T5 T6  218 1/1 state_d = StIdle; Tests: T4 T5 T6  219 end MISSING_ELSE 220 end 221 222 default: begin 223 state_d = StIdle; 224 end 225 endcase // unique case (state_q) 226 end // always_comb 227 228 1/1 assign dst_update_req = dst_hold_req | dst_lat_d | dst_lat_q; Tests: T1 T2 T3  229 logic src_req; 230 prim_sync_reqack u_dst_update_sync ( 231 .clk_src_i(clk_dst_i), 232 .rst_src_ni(rst_dst_ni), 233 .clk_dst_i(clk_src_i), 234 .rst_dst_ni(rst_src_ni), 235 .req_chk_i(1'b1), 236 .src_req_i(dst_update_req), 237 .src_ack_o(dst_update_ack), 238 .dst_req_o(src_req), 239 // immediate ack 240 .dst_ack_i(src_req) 241 ); 242 243 1/1 assign src_ack_o = src_req & (id_q == SelSwReq); Tests: T1 T2 T3  244 1/1 assign src_update_o = src_req & (id_q == SelHwReq); Tests: T1 T2 T3 

Cond Coverage for Instance : tb.dut.u_reg.u_adc_chn_val_0_cdc.u_arb
TotalCoveredPercent
Conditions422866.67
Logical422866.67
Non-Logical00
Event00

 LINE       100
 EXPRESSION (dst_update_i & (dst_qs_o != dst_ds_i))
             ------1-----   -----------2----------
-1--2-StatusTests
01CoveredT15,T18,T19
10CoveredT6,T12,T14
11CoveredT4,T5,T6

 LINE       100
 SUB-EXPRESSION (dst_qs_o != dst_ds_i)
                -----------1----------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT4,T5,T6

 LINE       123
 EXPRESSION (gen_wr_req.dst_req_q && gen_wr_req.dst_lat_d)
             ----------1---------    ----------2---------
-1--2-StatusTests
01CoveredT4,T5,T6
10Not Covered
11Not Covered

 LINE       129
 EXPRESSION (dst_req_i && ((!gen_wr_req.dst_req_q)) && gen_wr_req.busy)
             ----1----    ------------2------------    -------3-------
-1--2--3-StatusTests
011CoveredT4,T5,T6
101Not Covered
110Not Covered
111Not Covered

 LINE       135
 EXPRESSION (gen_wr_req.dst_req_q | dst_req_i)
             ----------1---------   ----2----
-1--2-StatusTests
00CoveredT1,T2,T3
01Not Covered
10Not Covered

 LINE       157
 EXPRESSION (gen_wr_req.dst_update_req && gen_wr_req.dst_update_ack)
             ------------1------------    ------------2------------
-1--2-StatusTests
01Not Covered
10CoveredT4,T5,T6
11CoveredT4,T5,T6

 LINE       159
 EXPRESSION (gen_wr_req.dst_req && gen_wr_req.dst_lat_d)
             ---------1--------    ----------2---------
-1--2-StatusTests
01CoveredT4,T5,T6
10Not Covered
11Not Covered

 LINE       161
 EXPRESSION (((!gen_wr_req.dst_req)) && gen_wr_req.dst_lat_d)
             -----------1-----------    ----------2---------
-1--2-StatusTestsExclude Annotation
01Excluded VC_COV_UNR
10CoveredT1,T2,T3
11CoveredT4,T5,T6

 LINE       183
 EXPRESSION (((~gen_wr_req.busy)) & gen_wr_req.dst_req)
             ----------1---------   ---------2--------
-1--2-StatusTests
01Not Covered
10CoveredT1,T2,T3
11Not Covered

 LINE       207
 EXPRESSION (dst_qs_o != dst_qs_i)
            -----------1----------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT15,T18,T19

 LINE       228
 EXPRESSION (gen_wr_req.dst_hold_req | gen_wr_req.dst_lat_d | gen_wr_req.dst_lat_q)
             -----------1-----------   ----------2---------   ----------3---------
-1--2--3-StatusTests
000CoveredT1,T2,T3
001CoveredT15,T18,T19
010CoveredT4,T5,T6
100CoveredT4,T5,T6

 LINE       243
 EXPRESSION (gen_wr_req.src_req & (gen_wr_req.id_q == SelSwReq))
             ---------1--------   --------------2--------------
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT4,T5,T6
11Not Covered

 LINE       243
 SUB-EXPRESSION (gen_wr_req.id_q == SelSwReq)
                --------------1--------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       244
 EXPRESSION (gen_wr_req.src_req & (gen_wr_req.id_q == SelHwReq))
             ---------1--------   --------------2--------------
-1--2-StatusTests
01CoveredT4,T5,T6
10Not Covered
11CoveredT4,T5,T6

 LINE       244
 SUB-EXPRESSION (gen_wr_req.id_q == SelHwReq)
                --------------1--------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT4,T5,T6

Branch Coverage for Instance : tb.dut.u_reg.u_adc_chn_val_0_cdc.u_arb
Line No.TotalCoveredPercent
Branches 23 18 78.26
IF 111 2 2 100.00
IF 121 4 2 50.00
IF 139 4 4 100.00
IF 155 6 5 83.33
CASE 197 7 5 71.43


111 if (!rst_dst_ni) begin -1- 112 state_q <= StIdle; ==> 113 end else begin 114 state_q <= state_d; ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T3
0 Covered T1,T2,T3


121 if (!rst_dst_ni) begin -1- 122 dst_req_q <= '0; ==> 123 end else if (dst_req_q && dst_lat_d) begin -2- 124 // if request is held, when the transaction starts, 125 // automatically clear. 126 // dst_lat_d is safe to used here because dst_req_q, if set, 127 // always has priority over other hardware based events. 128 dst_req_q <= '0; ==> 129 end else if (dst_req_i && !dst_req_q && busy) begin -3- 130 // if destination request arrives when a handshake event 131 // is already ongoing, hold on to request and send later 132 dst_req_q <= 1'b1; ==> 133 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Not Covered
0 0 1 Not Covered
0 0 0 Covered T1,T2,T3


139 if (!rst_dst_ni) begin -1- 140 dst_qs_o <= ResetVal; ==> 141 end else if (dst_lat_d) begin -2- 142 dst_qs_o <= dst_ds_i; ==> 143 end else if (dst_lat_q) begin -3- 144 dst_qs_o <= dst_qs_i; ==> 145 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T4,T5,T6
0 0 1 Covered T15,T18,T19
0 0 0 Covered T1,T2,T3


155 if (!rst_dst_ni) begin -1- 156 id_q <= SelSwReq; ==> 157 end else if (dst_update_req && dst_update_ack) begin -2- 158 id_q <= SelSwReq; ==> 159 end else if (dst_req && dst_lat_d) begin -3- 160 id_q <= SelSwReq; ==> 161 end else if (!dst_req && dst_lat_d) begin -4- 162 id_q <= SelHwReq; ==> 163 end else if (dst_lat_q) begin -5- 164 id_q <= SelHwReq; ==> 165 end MISSING_ELSE ==>

Branches:
-1--2--3--4--5-StatusTests
1 - - - - Covered T1,T2,T3
0 1 - - - Covered T4,T5,T6
0 0 1 - - Not Covered
0 0 0 1 - Covered T4,T5,T6
0 0 0 0 1 Covered T15,T18,T19
0 0 0 0 0 Covered T1,T2,T3


197 unique case (state_q) -1- 198 StIdle: begin 199 busy = '0; 200 if (dst_req) begin -2- 201 // there's a software issued request for change 202 state_d = StWait; ==> 203 dst_lat_d = 1'b1; 204 end else if (dst_update) begin -3- 205 state_d = StWait; ==> 206 dst_lat_d = 1'b1; 207 end else if (dst_qs_o != dst_qs_i) begin -4- 208 // there's a direct destination update 209 // that was blocked by an ongoing transaction 210 state_d = StWait; ==> 211 dst_lat_q = 1'b1; 212 end MISSING_ELSE ==> 213 end 214 215 StWait: begin 216 dst_hold_req = 1'b1; 217 if (dst_update_ack) begin -5- 218 state_d = StIdle; ==> 219 end MISSING_ELSE ==> 220 end 221 222 default: begin 223 state_d = StIdle; ==>

Branches:
-1--2--3--4--5-StatusTests
StIdle 1 - - - Not Covered
StIdle 0 1 - - Covered T4,T5,T6
StIdle 0 0 1 - Covered T15,T18,T19
StIdle 0 0 0 - Covered T1,T2,T3
StWait - - - 1 Covered T4,T5,T6
StWait - - - 0 Covered T4,T5,T6
default - - - - Not Covered


Assert Coverage for Instance : tb.dut.u_reg.u_adc_chn_val_0_cdc.u_arb
TotalAttemptedPercentSucceeded/MatchedPercent
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

NameAttemptsReal SuccessesFailuresIncomplete
gen_wr_req.DstUpdateReqCheck_A 33407435 616319 0 920
gen_wr_req.HwIdSelCheck_A 33407435 616469 0 0


gen_wr_req.DstUpdateReqCheck_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 33407435 616319 0 920
T4 1176 40 0 1
T5 691 20 0 1
T6 1382 22 0 1
T7 1185 40 0 1
T8 1232 40 0 1
T9 721 18 0 1
T10 1199 40 0 1
T11 597 14 0 1
T12 0 4 0 0
T13 0 30 0 0
T24 1622 0 0 1
T25 83 0 0 1

gen_wr_req.HwIdSelCheck_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 33407435 616469 0 0
T4 1176 40 0 0
T5 691 20 0 0
T6 1382 22 0 0
T7 1185 40 0 0
T8 1232 40 0 0
T9 721 18 0 0
T10 1199 40 0 0
T11 597 14 0 0
T12 0 4 0 0
T13 0 30 0 0
T24 1622 0 0 0
T25 83 0 0 0

Line Coverage for Instance : tb.dut.u_reg.u_adc_chn_val_1_cdc.u_arb
Line No.TotalCoveredPercent
TOTAL504590.00
CONT_ASSIGN10011100.00
ALWAYS11133100.00
ALWAYS1216466.67
CONT_ASSIGN13511100.00
ALWAYS13966100.00
ALWAYS15510990.00
CONT_ASSIGN18311100.00
ALWAYS187191789.47
CONT_ASSIGN22811100.00
CONT_ASSIGN24311100.00
CONT_ASSIGN24411100.00

99 logic dst_update; 100 1/1 assign dst_update = dst_update_i & (dst_qs_o != dst_ds_i); Tests: T1 T2 T3  101 102 if (DstWrReq) begin : gen_wr_req 103 logic dst_lat_q; 104 logic dst_lat_d; 105 logic dst_update_req; 106 logic dst_update_ack; 107 req_sel_e id_q; 108 109 state_e state_q, state_d; 110 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 111 1/1 if (!rst_dst_ni) begin Tests: T1 T2 T3  112 1/1 state_q <= StIdle; Tests: T1 T2 T3  113 end else begin 114 1/1 state_q <= state_d; Tests: T1 T2 T3  115 end 116 end 117 118 logic busy; 119 logic dst_req_q, dst_req; 120 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 121 1/1 if (!rst_dst_ni) begin Tests: T1 T2 T3  122 1/1 dst_req_q <= '0; Tests: T1 T2 T3  123 1/1 end else if (dst_req_q && dst_lat_d) begin Tests: T1 T2 T3  124 // if request is held, when the transaction starts, 125 // automatically clear. 126 // dst_lat_d is safe to used here because dst_req_q, if set, 127 // always has priority over other hardware based events. 128 0/1 ==> dst_req_q <= '0; 129 1/1 end else if (dst_req_i && !dst_req_q && busy) begin Tests: T1 T2 T3  130 // if destination request arrives when a handshake event 131 // is already ongoing, hold on to request and send later 132 0/1 ==> dst_req_q <= 1'b1; 133 end MISSING_ELSE 134 end 135 1/1 assign dst_req = dst_req_q | dst_req_i; Tests: T1 T2 T3  136 137 // Hold data at the beginning of a transaction 138 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 139 1/1 if (!rst_dst_ni) begin Tests: T1 T2 T3  140 1/1 dst_qs_o <= ResetVal; Tests: T1 T2 T3  141 1/1 end else if (dst_lat_d) begin Tests: T1 T2 T3  142 1/1 dst_qs_o <= dst_ds_i; Tests: T4 T5 T6  143 1/1 end else if (dst_lat_q) begin Tests: T1 T2 T3  144 1/1 dst_qs_o <= dst_qs_i; Tests: T14 T15 T16  145 end MISSING_ELSE 146 end 147 148 // Which type of transaction is being ack'd back? 149 // 0 - software initiated request 150 // 1 - hardware initiated request 151 // The id information is used by prim_reg_cdc to disambiguate 152 // simultaneous updates from software and hardware. 153 // See scenario 2 case 3 for an example of how this is handled. 154 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 155 1/1 if (!rst_dst_ni) begin Tests: T1 T2 T3  156 1/1 id_q <= SelSwReq; Tests: T1 T2 T3  157 1/1 end else if (dst_update_req && dst_update_ack) begin Tests: T1 T2 T3  158 1/1 id_q <= SelSwReq; Tests: T4 T5 T6  159 1/1 end else if (dst_req && dst_lat_d) begin Tests: T1 T2 T3  160 0/1 ==> id_q <= SelSwReq; 161 1/1 end else if (!dst_req && dst_lat_d) begin Tests: T1 T2 T3  162 1/1 id_q <= SelHwReq; Tests: T4 T5 T6  163 1/1 end else if (dst_lat_q) begin Tests: T1 T2 T3  164 1/1 id_q <= SelHwReq; Tests: T14 T15 T16  165 end MISSING_ELSE 166 end 167 168 // if a destination update is received when the system is idle and there is no 169 // software side request, hw update must be selected. 170 `ASSERT(DstUpdateReqCheck_A, ##1 dst_update & !dst_req & !busy |=> id_q == SelHwReq, 171 clk_dst_i, !rst_dst_ni) 172 173 // if hw select was chosen, then it must be the case there was a destination update 174 // indication or there was a difference between the transit register and the 175 // latest incoming value. 176 `ASSERT(HwIdSelCheck_A, $rose(id_q == SelHwReq) |-> $past(dst_update_i, 1) || 177 $past(dst_lat_q, 1), 178 clk_dst_i, !rst_dst_ni) 179 180 181 // send out prim_subreg request only when proceeding 182 // with software request 183 1/1 assign dst_req_o = ~busy & dst_req; Tests: T1 T2 T3  184 185 logic dst_hold_req; 186 always_comb begin 187 1/1 state_d = state_q; Tests: T1 T2 T3  188 1/1 dst_hold_req = '0; Tests: T1 T2 T3  189 190 // depending on when the request is received, we 191 // may latch d or q. 192 1/1 dst_lat_q = '0; Tests: T1 T2 T3  193 1/1 dst_lat_d = '0; Tests: T1 T2 T3  194 195 1/1 busy = 1'b1; Tests: T1 T2 T3  196 197 1/1 unique case (state_q) Tests: T1 T2 T3  198 StIdle: begin 199 1/1 busy = '0; Tests: T1 T2 T3  200 1/1 if (dst_req) begin Tests: T1 T2 T3  201 // there's a software issued request for change 202 0/1 ==> state_d = StWait; 203 0/1 ==> dst_lat_d = 1'b1; 204 1/1 end else if (dst_update) begin Tests: T1 T2 T3  205 1/1 state_d = StWait; Tests: T4 T5 T6  206 1/1 dst_lat_d = 1'b1; Tests: T4 T5 T6  207 1/1 end else if (dst_qs_o != dst_qs_i) begin Tests: T1 T2 T3  208 // there's a direct destination update 209 // that was blocked by an ongoing transaction 210 1/1 state_d = StWait; Tests: T14 T15 T16  211 1/1 dst_lat_q = 1'b1; Tests: T14 T15 T16  212 end MISSING_ELSE 213 end 214 215 StWait: begin 216 1/1 dst_hold_req = 1'b1; Tests: T4 T5 T6  217 1/1 if (dst_update_ack) begin Tests: T4 T5 T6  218 1/1 state_d = StIdle; Tests: T4 T5 T6  219 end MISSING_ELSE 220 end 221 222 default: begin 223 state_d = StIdle; 224 end 225 endcase // unique case (state_q) 226 end // always_comb 227 228 1/1 assign dst_update_req = dst_hold_req | dst_lat_d | dst_lat_q; Tests: T1 T2 T3  229 logic src_req; 230 prim_sync_reqack u_dst_update_sync ( 231 .clk_src_i(clk_dst_i), 232 .rst_src_ni(rst_dst_ni), 233 .clk_dst_i(clk_src_i), 234 .rst_dst_ni(rst_src_ni), 235 .req_chk_i(1'b1), 236 .src_req_i(dst_update_req), 237 .src_ack_o(dst_update_ack), 238 .dst_req_o(src_req), 239 // immediate ack 240 .dst_ack_i(src_req) 241 ); 242 243 1/1 assign src_ack_o = src_req & (id_q == SelSwReq); Tests: T1 T2 T3  244 1/1 assign src_update_o = src_req & (id_q == SelHwReq); Tests: T1 T2 T3 

Cond Coverage for Instance : tb.dut.u_reg.u_adc_chn_val_1_cdc.u_arb
TotalCoveredPercent
Conditions422866.67
Logical422866.67
Non-Logical00
Event00

 LINE       100
 EXPRESSION (dst_update_i & (dst_qs_o != dst_ds_i))
             ------1-----   -----------2----------
-1--2-StatusTests
01CoveredT14,T15,T16
10CoveredT6,T14,T15
11CoveredT4,T5,T6

 LINE       100
 SUB-EXPRESSION (dst_qs_o != dst_ds_i)
                -----------1----------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT4,T5,T6

 LINE       123
 EXPRESSION (gen_wr_req.dst_req_q && gen_wr_req.dst_lat_d)
             ----------1---------    ----------2---------
-1--2-StatusTests
01CoveredT4,T5,T6
10Not Covered
11Not Covered

 LINE       129
 EXPRESSION (dst_req_i && ((!gen_wr_req.dst_req_q)) && gen_wr_req.busy)
             ----1----    ------------2------------    -------3-------
-1--2--3-StatusTests
011CoveredT4,T5,T6
101Not Covered
110Not Covered
111Not Covered

 LINE       135
 EXPRESSION (gen_wr_req.dst_req_q | dst_req_i)
             ----------1---------   ----2----
-1--2-StatusTests
00CoveredT1,T2,T3
01Not Covered
10Not Covered

 LINE       157
 EXPRESSION (gen_wr_req.dst_update_req && gen_wr_req.dst_update_ack)
             ------------1------------    ------------2------------
-1--2-StatusTests
01Not Covered
10CoveredT4,T5,T6
11CoveredT4,T5,T6

 LINE       159
 EXPRESSION (gen_wr_req.dst_req && gen_wr_req.dst_lat_d)
             ---------1--------    ----------2---------
-1--2-StatusTests
01CoveredT4,T5,T6
10Not Covered
11Not Covered

 LINE       161
 EXPRESSION (((!gen_wr_req.dst_req)) && gen_wr_req.dst_lat_d)
             -----------1-----------    ----------2---------
-1--2-StatusTestsExclude Annotation
01Excluded VC_COV_UNR
10CoveredT1,T2,T3
11CoveredT4,T5,T6

 LINE       183
 EXPRESSION (((~gen_wr_req.busy)) & gen_wr_req.dst_req)
             ----------1---------   ---------2--------
-1--2-StatusTests
01Not Covered
10CoveredT1,T2,T3
11Not Covered

 LINE       207
 EXPRESSION (dst_qs_o != dst_qs_i)
            -----------1----------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT14,T15,T16

 LINE       228
 EXPRESSION (gen_wr_req.dst_hold_req | gen_wr_req.dst_lat_d | gen_wr_req.dst_lat_q)
             -----------1-----------   ----------2---------   ----------3---------
-1--2--3-StatusTests
000CoveredT1,T2,T3
001CoveredT14,T15,T16
010CoveredT4,T5,T6
100CoveredT4,T5,T6

 LINE       243
 EXPRESSION (gen_wr_req.src_req & (gen_wr_req.id_q == SelSwReq))
             ---------1--------   --------------2--------------
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT4,T5,T6
11Not Covered

 LINE       243
 SUB-EXPRESSION (gen_wr_req.id_q == SelSwReq)
                --------------1--------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       244
 EXPRESSION (gen_wr_req.src_req & (gen_wr_req.id_q == SelHwReq))
             ---------1--------   --------------2--------------
-1--2-StatusTests
01CoveredT4,T5,T6
10Not Covered
11CoveredT4,T5,T6

 LINE       244
 SUB-EXPRESSION (gen_wr_req.id_q == SelHwReq)
                --------------1--------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT4,T5,T6

Branch Coverage for Instance : tb.dut.u_reg.u_adc_chn_val_1_cdc.u_arb
Line No.TotalCoveredPercent
Branches 23 18 78.26
IF 111 2 2 100.00
IF 121 4 2 50.00
IF 139 4 4 100.00
IF 155 6 5 83.33
CASE 197 7 5 71.43


111 if (!rst_dst_ni) begin -1- 112 state_q <= StIdle; ==> 113 end else begin 114 state_q <= state_d; ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T3
0 Covered T1,T2,T3


121 if (!rst_dst_ni) begin -1- 122 dst_req_q <= '0; ==> 123 end else if (dst_req_q && dst_lat_d) begin -2- 124 // if request is held, when the transaction starts, 125 // automatically clear. 126 // dst_lat_d is safe to used here because dst_req_q, if set, 127 // always has priority over other hardware based events. 128 dst_req_q <= '0; ==> 129 end else if (dst_req_i && !dst_req_q && busy) begin -3- 130 // if destination request arrives when a handshake event 131 // is already ongoing, hold on to request and send later 132 dst_req_q <= 1'b1; ==> 133 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Not Covered
0 0 1 Not Covered
0 0 0 Covered T1,T2,T3


139 if (!rst_dst_ni) begin -1- 140 dst_qs_o <= ResetVal; ==> 141 end else if (dst_lat_d) begin -2- 142 dst_qs_o <= dst_ds_i; ==> 143 end else if (dst_lat_q) begin -3- 144 dst_qs_o <= dst_qs_i; ==> 145 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T4,T5,T6
0 0 1 Covered T14,T15,T16
0 0 0 Covered T1,T2,T3


155 if (!rst_dst_ni) begin -1- 156 id_q <= SelSwReq; ==> 157 end else if (dst_update_req && dst_update_ack) begin -2- 158 id_q <= SelSwReq; ==> 159 end else if (dst_req && dst_lat_d) begin -3- 160 id_q <= SelSwReq; ==> 161 end else if (!dst_req && dst_lat_d) begin -4- 162 id_q <= SelHwReq; ==> 163 end else if (dst_lat_q) begin -5- 164 id_q <= SelHwReq; ==> 165 end MISSING_ELSE ==>

Branches:
-1--2--3--4--5-StatusTests
1 - - - - Covered T1,T2,T3
0 1 - - - Covered T4,T5,T6
0 0 1 - - Not Covered
0 0 0 1 - Covered T4,T5,T6
0 0 0 0 1 Covered T14,T15,T16
0 0 0 0 0 Covered T1,T2,T3


197 unique case (state_q) -1- 198 StIdle: begin 199 busy = '0; 200 if (dst_req) begin -2- 201 // there's a software issued request for change 202 state_d = StWait; ==> 203 dst_lat_d = 1'b1; 204 end else if (dst_update) begin -3- 205 state_d = StWait; ==> 206 dst_lat_d = 1'b1; 207 end else if (dst_qs_o != dst_qs_i) begin -4- 208 // there's a direct destination update 209 // that was blocked by an ongoing transaction 210 state_d = StWait; ==> 211 dst_lat_q = 1'b1; 212 end MISSING_ELSE ==> 213 end 214 215 StWait: begin 216 dst_hold_req = 1'b1; 217 if (dst_update_ack) begin -5- 218 state_d = StIdle; ==> 219 end MISSING_ELSE ==> 220 end 221 222 default: begin 223 state_d = StIdle; ==>

Branches:
-1--2--3--4--5-StatusTests
StIdle 1 - - - Not Covered
StIdle 0 1 - - Covered T4,T5,T6
StIdle 0 0 1 - Covered T14,T15,T16
StIdle 0 0 0 - Covered T1,T2,T3
StWait - - - 1 Covered T4,T5,T6
StWait - - - 0 Covered T4,T5,T6
default - - - - Not Covered


Assert Coverage for Instance : tb.dut.u_reg.u_adc_chn_val_1_cdc.u_arb
TotalAttemptedPercentSucceeded/MatchedPercent
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

NameAttemptsReal SuccessesFailuresIncomplete
gen_wr_req.DstUpdateReqCheck_A 33407435 603001 0 920
gen_wr_req.HwIdSelCheck_A 33407435 610501 0 0


gen_wr_req.DstUpdateReqCheck_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 33407435 603001 0 920
T4 1176 20 0 1
T5 691 14 0 1
T6 1382 21 0 1
T7 1185 20 0 1
T8 1232 20 0 1
T9 721 13 0 1
T10 1199 20 0 1
T11 597 11 0 1
T12 0 2 0 0
T13 0 20 0 0
T24 1622 0 0 1
T25 83 0 0 1

gen_wr_req.HwIdSelCheck_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 33407435 610501 0 0
T4 1176 20 0 0
T5 691 14 0 0
T6 1382 21 0 0
T7 1185 20 0 0
T8 1232 20 0 0
T9 721 13 0 0
T10 1199 20 0 0
T11 597 11 0 0
T12 0 2 0 0
T13 0 20 0 0
T24 1622 0 0 0
T25 83 0 0 0

Line Coverage for Instance : tb.dut.u_reg.u_adc_wakeup_ctl_cdc.u_arb
Line No.TotalCoveredPercent
TOTAL22100.00
CONT_ASSIGN10000
CONT_ASSIGN28311100.00
CONT_ASSIGN28411100.00
CONT_ASSIGN29900

99 logic dst_update; 100 unreachable assign dst_update = dst_update_i & (dst_qs_o != dst_ds_i); 101 102 if (DstWrReq) begin : gen_wr_req 103 logic dst_lat_q; 104 logic dst_lat_d; 105 logic dst_update_req; 106 logic dst_update_ack; 107 req_sel_e id_q; 108 109 state_e state_q, state_d; 110 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 111 if (!rst_dst_ni) begin 112 state_q <= StIdle; 113 end else begin 114 state_q <= state_d; 115 end 116 end 117 118 logic busy; 119 logic dst_req_q, dst_req; 120 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 121 if (!rst_dst_ni) begin 122 dst_req_q <= '0; 123 end else if (dst_req_q && dst_lat_d) begin 124 // if request is held, when the transaction starts, 125 // automatically clear. 126 // dst_lat_d is safe to used here because dst_req_q, if set, 127 // always has priority over other hardware based events. 128 dst_req_q <= '0; 129 end else if (dst_req_i && !dst_req_q && busy) begin 130 // if destination request arrives when a handshake event 131 // is already ongoing, hold on to request and send later 132 dst_req_q <= 1'b1; 133 end 134 end 135 assign dst_req = dst_req_q | dst_req_i; 136 137 // Hold data at the beginning of a transaction 138 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 139 if (!rst_dst_ni) begin 140 dst_qs_o <= ResetVal; 141 end else if (dst_lat_d) begin 142 dst_qs_o <= dst_ds_i; 143 end else if (dst_lat_q) begin 144 dst_qs_o <= dst_qs_i; 145 end 146 end 147 148 // Which type of transaction is being ack'd back? 149 // 0 - software initiated request 150 // 1 - hardware initiated request 151 // The id information is used by prim_reg_cdc to disambiguate 152 // simultaneous updates from software and hardware. 153 // See scenario 2 case 3 for an example of how this is handled. 154 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 155 if (!rst_dst_ni) begin 156 id_q <= SelSwReq; 157 end else if (dst_update_req && dst_update_ack) begin 158 id_q <= SelSwReq; 159 end else if (dst_req && dst_lat_d) begin 160 id_q <= SelSwReq; 161 end else if (!dst_req && dst_lat_d) begin 162 id_q <= SelHwReq; 163 end else if (dst_lat_q) begin 164 id_q <= SelHwReq; 165 end 166 end 167 168 // if a destination update is received when the system is idle and there is no 169 // software side request, hw update must be selected. 170 `ASSERT(DstUpdateReqCheck_A, ##1 dst_update & !dst_req & !busy |=> id_q == SelHwReq, 171 clk_dst_i, !rst_dst_ni) 172 173 // if hw select was chosen, then it must be the case there was a destination update 174 // indication or there was a difference between the transit register and the 175 // latest incoming value. 176 `ASSERT(HwIdSelCheck_A, $rose(id_q == SelHwReq) |-> $past(dst_update_i, 1) || 177 $past(dst_lat_q, 1), 178 clk_dst_i, !rst_dst_ni) 179 180 181 // send out prim_subreg request only when proceeding 182 // with software request 183 assign dst_req_o = ~busy & dst_req; 184 185 logic dst_hold_req; 186 always_comb begin 187 state_d = state_q; 188 dst_hold_req = '0; 189 190 // depending on when the request is received, we 191 // may latch d or q. 192 dst_lat_q = '0; 193 dst_lat_d = '0; 194 195 busy = 1'b1; 196 197 unique case (state_q) 198 StIdle: begin 199 busy = '0; 200 if (dst_req) begin 201 // there's a software issued request for change 202 state_d = StWait; 203 dst_lat_d = 1'b1; 204 end else if (dst_update) begin 205 state_d = StWait; 206 dst_lat_d = 1'b1; 207 end else if (dst_qs_o != dst_qs_i) begin 208 // there's a direct destination update 209 // that was blocked by an ongoing transaction 210 state_d = StWait; 211 dst_lat_q = 1'b1; 212 end 213 end 214 215 StWait: begin 216 dst_hold_req = 1'b1; 217 if (dst_update_ack) begin 218 state_d = StIdle; 219 end 220 end 221 222 default: begin 223 state_d = StIdle; 224 end 225 endcase // unique case (state_q) 226 end // always_comb 227 228 assign dst_update_req = dst_hold_req | dst_lat_d | dst_lat_q; 229 logic src_req; 230 prim_sync_reqack u_dst_update_sync ( 231 .clk_src_i(clk_dst_i), 232 .rst_src_ni(rst_dst_ni), 233 .clk_dst_i(clk_src_i), 234 .rst_dst_ni(rst_src_ni), 235 .req_chk_i(1'b1), 236 .src_req_i(dst_update_req), 237 .src_ack_o(dst_update_ack), 238 .dst_req_o(src_req), 239 // immediate ack 240 .dst_ack_i(src_req) 241 ); 242 243 assign src_ack_o = src_req & (id_q == SelSwReq); 244 assign src_update_o = src_req & (id_q == SelHwReq); 245 246 // once hardware makes an update request, we must eventually see an update pulse 247 `ifdef FPV_ON 248 `ASSERT(ReqTimeout_A, $rose(id_q == SelHwReq) |-> s_eventually(src_update_o), 249 clk_src_i, !rst_src_ni) 250 // TODO: #14913 check if we can add additional sim assertions. 251 `endif 252 253 `ifdef FPV_ON 254 //VCS coverage off 255 // pragma coverage off 256 257 logic async_flag; 258 always_ff @(posedge clk_dst_i or negedge rst_dst_ni or posedge src_update_o) begin 259 if (!rst_dst_ni) begin 260 async_flag <= '0; 261 end else if (src_update_o) begin 262 async_flag <= '0; 263 end else if (dst_update && !dst_req_o && !busy) begin 264 async_flag <= 1'b1; 265 end 266 end 267 268 //VCS coverage on 269 // pragma coverage on 270 271 // once hardware makes an update request, we must eventually see an update pulse 272 // TODO: #14913 check if we can add additional sim assertions. 273 `ASSERT(UpdateTimeout_A, $rose(async_flag) |-> s_eventually(src_update_o), 274 clk_src_i, !rst_src_ni) 275 `endif 276 277 end else begin : gen_passthru 278 // when there is no possibility of conflicting HW transactions, 279 // we can assume that dst_qs_i will only ever take on the value 280 // that is directly related to the transaction. As a result, 281 // there is no need to latch further, and the end destination 282 // can in fact be used as the holding register. 283 1/1 assign dst_qs_o = dst_qs_i; Tests: T1 T2 T3  284 1/1 assign dst_req_o = dst_req_i; Tests: T1 T2 T3  285 286 // since there are no hw transactions, src_update_o is always '0 287 assign src_update_o = '0; 288 289 prim_pulse_sync u_dst_to_src_ack ( 290 .clk_src_i(clk_dst_i), 291 .rst_src_ni(rst_dst_ni), 292 .clk_dst_i(clk_src_i), 293 .rst_dst_ni(rst_src_ni), 294 .src_pulse_i(dst_req_i), 295 .dst_pulse_o(src_ack_o) 296 ); 297 298 logic unused_sigs; 299 unreachable assign unused_sigs = |{dst_ds_i, dst_update};

Cond Coverage for Instance : tb.dut.u_reg.u_adc_wakeup_ctl_cdc.u_arb
TotalCoveredPercent
Conditions33100.00
Logical33100.00
Non-Logical00
Event00

 LINE       100
 EXPRESSION (dst_update_i & (dst_qs_o != dst_ds_i))
             ------1-----   -----------2----------
-1--2-StatusTests
01CoveredT12,T14,T15
10Unreachable
11Unreachable

 LINE       100
 SUB-EXPRESSION (dst_qs_o != dst_ds_i)
                -----------1----------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT12,T14,T15
Line Coverage for Instance : tb.dut.u_reg.u_filter_status_cdc.u_arb
Line No.TotalCoveredPercent
TOTAL5050100.00
CONT_ASSIGN10011100.00
ALWAYS11133100.00
ALWAYS12166100.00
CONT_ASSIGN13511100.00
ALWAYS13966100.00
ALWAYS1551010100.00
CONT_ASSIGN18311100.00
ALWAYS1871919100.00
CONT_ASSIGN22811100.00
CONT_ASSIGN24311100.00
CONT_ASSIGN24411100.00

99 logic dst_update; 100 1/1 assign dst_update = dst_update_i & (dst_qs_o != dst_ds_i); Tests: T1 T2 T3  101 102 if (DstWrReq) begin : gen_wr_req 103 logic dst_lat_q; 104 logic dst_lat_d; 105 logic dst_update_req; 106 logic dst_update_ack; 107 req_sel_e id_q; 108 109 state_e state_q, state_d; 110 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 111 1/1 if (!rst_dst_ni) begin Tests: T1 T2 T3  112 1/1 state_q <= StIdle; Tests: T1 T2 T3  113 end else begin 114 1/1 state_q <= state_d; Tests: T1 T2 T3  115 end 116 end 117 118 logic busy; 119 logic dst_req_q, dst_req; 120 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 121 1/1 if (!rst_dst_ni) begin Tests: T1 T2 T3  122 1/1 dst_req_q <= '0; Tests: T1 T2 T3  123 1/1 end else if (dst_req_q && dst_lat_d) begin Tests: T1 T2 T3  124 // if request is held, when the transaction starts, 125 // automatically clear. 126 // dst_lat_d is safe to used here because dst_req_q, if set, 127 // always has priority over other hardware based events. 128 1/1 dst_req_q <= '0; Tests: T81 T82 T83  129 1/1 end else if (dst_req_i && !dst_req_q && busy) begin Tests: T1 T2 T3  130 // if destination request arrives when a handshake event 131 // is already ongoing, hold on to request and send later 132 1/1 dst_req_q <= 1'b1; Tests: T81 T82 T83  133 end MISSING_ELSE 134 end 135 1/1 assign dst_req = dst_req_q | dst_req_i; Tests: T1 T2 T3  136 137 // Hold data at the beginning of a transaction 138 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 139 1/1 if (!rst_dst_ni) begin Tests: T1 T2 T3  140 1/1 dst_qs_o <= ResetVal; Tests: T1 T2 T3  141 1/1 end else if (dst_lat_d) begin Tests: T1 T2 T3  142 1/1 dst_qs_o <= dst_ds_i; Tests: T6 T14 T15  143 1/1 end else if (dst_lat_q) begin Tests: T1 T2 T3  144 1/1 dst_qs_o <= dst_qs_i; Tests: T19 T68 T84  145 end MISSING_ELSE 146 end 147 148 // Which type of transaction is being ack'd back? 149 // 0 - software initiated request 150 // 1 - hardware initiated request 151 // The id information is used by prim_reg_cdc to disambiguate 152 // simultaneous updates from software and hardware. 153 // See scenario 2 case 3 for an example of how this is handled. 154 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 155 1/1 if (!rst_dst_ni) begin Tests: T1 T2 T3  156 1/1 id_q <= SelSwReq; Tests: T1 T2 T3  157 1/1 end else if (dst_update_req && dst_update_ack) begin Tests: T1 T2 T3  158 1/1 id_q <= SelSwReq; Tests: T6 T14 T15  159 1/1 end else if (dst_req && dst_lat_d) begin Tests: T1 T2 T3  160 1/1 id_q <= SelSwReq; Tests: T6 T14 T16  161 1/1 end else if (!dst_req && dst_lat_d) begin Tests: T1 T2 T3  162 1/1 id_q <= SelHwReq; Tests: T14 T15 T16  163 1/1 end else if (dst_lat_q) begin Tests: T1 T2 T3  164 1/1 id_q <= SelHwReq; Tests: T19 T68 T84  165 end MISSING_ELSE 166 end 167 168 // if a destination update is received when the system is idle and there is no 169 // software side request, hw update must be selected. 170 `ASSERT(DstUpdateReqCheck_A, ##1 dst_update & !dst_req & !busy |=> id_q == SelHwReq, 171 clk_dst_i, !rst_dst_ni) 172 173 // if hw select was chosen, then it must be the case there was a destination update 174 // indication or there was a difference between the transit register and the 175 // latest incoming value. 176 `ASSERT(HwIdSelCheck_A, $rose(id_q == SelHwReq) |-> $past(dst_update_i, 1) || 177 $past(dst_lat_q, 1), 178 clk_dst_i, !rst_dst_ni) 179 180 181 // send out prim_subreg request only when proceeding 182 // with software request 183 1/1 assign dst_req_o = ~busy & dst_req; Tests: T1 T2 T3  184 185 logic dst_hold_req; 186 always_comb begin 187 1/1 state_d = state_q; Tests: T1 T2 T3  188 1/1 dst_hold_req = '0; Tests: T1 T2 T3  189 190 // depending on when the request is received, we 191 // may latch d or q. 192 1/1 dst_lat_q = '0; Tests: T1 T2 T3  193 1/1 dst_lat_d = '0; Tests: T1 T2 T3  194 195 1/1 busy = 1'b1; Tests: T1 T2 T3  196 197 1/1 unique case (state_q) Tests: T1 T2 T3  198 StIdle: begin 199 1/1 busy = '0; Tests: T1 T2 T3  200 1/1 if (dst_req) begin Tests: T1 T2 T3  201 // there's a software issued request for change 202 1/1 state_d = StWait; Tests: T6 T14 T16  203 1/1 dst_lat_d = 1'b1; Tests: T6 T14 T16  204 1/1 end else if (dst_update) begin Tests: T1 T2 T3  205 1/1 state_d = StWait; Tests: T14 T15 T16  206 1/1 dst_lat_d = 1'b1; Tests: T14 T15 T16  207 1/1 end else if (dst_qs_o != dst_qs_i) begin Tests: T1 T2 T3  208 // there's a direct destination update 209 // that was blocked by an ongoing transaction 210 1/1 state_d = StWait; Tests: T19 T68 T84  211 1/1 dst_lat_q = 1'b1; Tests: T19 T68 T84  212 end MISSING_ELSE 213 end 214 215 StWait: begin 216 1/1 dst_hold_req = 1'b1; Tests: T6 T14 T15  217 1/1 if (dst_update_ack) begin Tests: T6 T14 T15  218 1/1 state_d = StIdle; Tests: T6 T14 T15  219 end MISSING_ELSE 220 end 221 222 default: begin 223 state_d = StIdle; 224 end 225 endcase // unique case (state_q) 226 end // always_comb 227 228 1/1 assign dst_update_req = dst_hold_req | dst_lat_d | dst_lat_q; Tests: T1 T2 T3  229 logic src_req; 230 prim_sync_reqack u_dst_update_sync ( 231 .clk_src_i(clk_dst_i), 232 .rst_src_ni(rst_dst_ni), 233 .clk_dst_i(clk_src_i), 234 .rst_dst_ni(rst_src_ni), 235 .req_chk_i(1'b1), 236 .src_req_i(dst_update_req), 237 .src_ack_o(dst_update_ack), 238 .dst_req_o(src_req), 239 // immediate ack 240 .dst_ack_i(src_req) 241 ); 242 243 1/1 assign src_ack_o = src_req & (id_q == SelSwReq); Tests: T1 T2 T3  244 1/1 assign src_update_o = src_req & (id_q == SelHwReq); Tests: T1 T2 T3 

Cond Coverage for Instance : tb.dut.u_reg.u_filter_status_cdc.u_arb
TotalCoveredPercent
Conditions424095.24
Logical424095.24
Non-Logical00
Event00

 LINE       100
 EXPRESSION (dst_update_i & (dst_qs_o != dst_ds_i))
             ------1-----   -----------2----------
-1--2-StatusTests
01CoveredT19,T68,T84
10CoveredT6,T14,T16
11CoveredT14,T15,T16

 LINE       100
 SUB-EXPRESSION (dst_qs_o != dst_ds_i)
                -----------1----------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT14,T15,T16

 LINE       123
 EXPRESSION (gen_wr_req.dst_req_q && gen_wr_req.dst_lat_d)
             ----------1---------    ----------2---------
-1--2-StatusTests
01CoveredT6,T14,T15
10CoveredT81,T82,T83
11CoveredT81,T82,T83

 LINE       129
 EXPRESSION (dst_req_i && ((!gen_wr_req.dst_req_q)) && gen_wr_req.busy)
             ----1----    ------------2------------    -------3-------
-1--2--3-StatusTests
011CoveredT6,T14,T15
101Not Covered
110CoveredT6,T14,T16
111CoveredT81,T82,T83

 LINE       135
 EXPRESSION (gen_wr_req.dst_req_q | dst_req_i)
             ----------1---------   ----2----
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT6,T14,T16
10CoveredT81,T82,T83

 LINE       157
 EXPRESSION (gen_wr_req.dst_update_req && gen_wr_req.dst_update_ack)
             ------------1------------    ------------2------------
-1--2-StatusTests
01Not Covered
10CoveredT6,T14,T15
11CoveredT6,T14,T15

 LINE       159
 EXPRESSION (gen_wr_req.dst_req && gen_wr_req.dst_lat_d)
             ---------1--------    ----------2---------
-1--2-StatusTests
01CoveredT14,T15,T16
10CoveredT81,T82,T83
11CoveredT6,T14,T16

 LINE       161
 EXPRESSION (((!gen_wr_req.dst_req)) && gen_wr_req.dst_lat_d)
             -----------1-----------    ----------2---------
-1--2-StatusTestsExclude Annotation
01Excluded VC_COV_UNR
10CoveredT1,T2,T3
11CoveredT14,T15,T16

 LINE       183
 EXPRESSION (((~gen_wr_req.busy)) & gen_wr_req.dst_req)
             ----------1---------   ---------2--------
-1--2-StatusTests
01CoveredT81,T82,T83
10CoveredT1,T2,T3
11CoveredT6,T14,T16

 LINE       207
 EXPRESSION (dst_qs_o != dst_qs_i)
            -----------1----------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT19,T68,T84

 LINE       228
 EXPRESSION (gen_wr_req.dst_hold_req | gen_wr_req.dst_lat_d | gen_wr_req.dst_lat_q)
             -----------1-----------   ----------2---------   ----------3---------
-1--2--3-StatusTests
000CoveredT1,T2,T3
001CoveredT19,T68,T84
010CoveredT6,T14,T15
100CoveredT6,T14,T15

 LINE       243
 EXPRESSION (gen_wr_req.src_req & (gen_wr_req.id_q == SelSwReq))
             ---------1--------   --------------2--------------
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT14,T15,T16
11CoveredT6,T14,T16

 LINE       243
 SUB-EXPRESSION (gen_wr_req.id_q == SelSwReq)
                --------------1--------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       244
 EXPRESSION (gen_wr_req.src_req & (gen_wr_req.id_q == SelHwReq))
             ---------1--------   --------------2--------------
-1--2-StatusTests
01CoveredT14,T15,T16
10CoveredT6,T14,T16
11CoveredT14,T15,T16

 LINE       244
 SUB-EXPRESSION (gen_wr_req.id_q == SelHwReq)
                --------------1--------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT14,T15,T16

Branch Coverage for Instance : tb.dut.u_reg.u_filter_status_cdc.u_arb
Line No.TotalCoveredPercent
Branches 23 22 95.65
IF 111 2 2 100.00
IF 121 4 4 100.00
IF 139 4 4 100.00
IF 155 6 6 100.00
CASE 197 7 6 85.71


111 if (!rst_dst_ni) begin -1- 112 state_q <= StIdle; ==> 113 end else begin 114 state_q <= state_d; ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T3
0 Covered T1,T2,T3


121 if (!rst_dst_ni) begin -1- 122 dst_req_q <= '0; ==> 123 end else if (dst_req_q && dst_lat_d) begin -2- 124 // if request is held, when the transaction starts, 125 // automatically clear. 126 // dst_lat_d is safe to used here because dst_req_q, if set, 127 // always has priority over other hardware based events. 128 dst_req_q <= '0; ==> 129 end else if (dst_req_i && !dst_req_q && busy) begin -3- 130 // if destination request arrives when a handshake event 131 // is already ongoing, hold on to request and send later 132 dst_req_q <= 1'b1; ==> 133 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T81,T82,T83
0 0 1 Covered T81,T82,T83
0 0 0 Covered T1,T2,T3


139 if (!rst_dst_ni) begin -1- 140 dst_qs_o <= ResetVal; ==> 141 end else if (dst_lat_d) begin -2- 142 dst_qs_o <= dst_ds_i; ==> 143 end else if (dst_lat_q) begin -3- 144 dst_qs_o <= dst_qs_i; ==> 145 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T6,T14,T15
0 0 1 Covered T19,T68,T84
0 0 0 Covered T1,T2,T3


155 if (!rst_dst_ni) begin -1- 156 id_q <= SelSwReq; ==> 157 end else if (dst_update_req && dst_update_ack) begin -2- 158 id_q <= SelSwReq; ==> 159 end else if (dst_req && dst_lat_d) begin -3- 160 id_q <= SelSwReq; ==> 161 end else if (!dst_req && dst_lat_d) begin -4- 162 id_q <= SelHwReq; ==> 163 end else if (dst_lat_q) begin -5- 164 id_q <= SelHwReq; ==> 165 end MISSING_ELSE ==>

Branches:
-1--2--3--4--5-StatusTests
1 - - - - Covered T1,T2,T3
0 1 - - - Covered T6,T14,T15
0 0 1 - - Covered T6,T14,T16
0 0 0 1 - Covered T14,T15,T16
0 0 0 0 1 Covered T19,T68,T84
0 0 0 0 0 Covered T1,T2,T3


197 unique case (state_q) -1- 198 StIdle: begin 199 busy = '0; 200 if (dst_req) begin -2- 201 // there's a software issued request for change 202 state_d = StWait; ==> 203 dst_lat_d = 1'b1; 204 end else if (dst_update) begin -3- 205 state_d = StWait; ==> 206 dst_lat_d = 1'b1; 207 end else if (dst_qs_o != dst_qs_i) begin -4- 208 // there's a direct destination update 209 // that was blocked by an ongoing transaction 210 state_d = StWait; ==> 211 dst_lat_q = 1'b1; 212 end MISSING_ELSE ==> 213 end 214 215 StWait: begin 216 dst_hold_req = 1'b1; 217 if (dst_update_ack) begin -5- 218 state_d = StIdle; ==> 219 end MISSING_ELSE ==> 220 end 221 222 default: begin 223 state_d = StIdle; ==>

Branches:
-1--2--3--4--5-StatusTests
StIdle 1 - - - Covered T6,T14,T16
StIdle 0 1 - - Covered T14,T15,T16
StIdle 0 0 1 - Covered T19,T68,T84
StIdle 0 0 0 - Covered T1,T2,T3
StWait - - - 1 Covered T6,T14,T15
StWait - - - 0 Covered T6,T14,T15
default - - - - Not Covered


Assert Coverage for Instance : tb.dut.u_reg.u_filter_status_cdc.u_arb
TotalAttemptedPercentSucceeded/MatchedPercent
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

NameAttemptsReal SuccessesFailuresIncomplete
gen_wr_req.DstUpdateReqCheck_A 33407435 15048 0 920
gen_wr_req.HwIdSelCheck_A 33407435 15100 0 0


gen_wr_req.DstUpdateReqCheck_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 33407435 15048 0 920
T14 1185 1 0 1
T15 1599 1 0 1
T16 32741 14 0 1
T17 64651 29 0 1
T18 33209 16 0 1
T19 0 1 0 0
T20 0 43 0 0
T21 0 20 0 0
T22 0 22 0 0
T23 0 24 0 0
T27 6858 0 0 1
T28 4465 0 0 1
T29 5724 0 0 1
T30 611 0 0 1
T31 61 0 0 1

gen_wr_req.HwIdSelCheck_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 33407435 15100 0 0
T14 1185 1 0 0
T15 1599 1 0 0
T16 32741 14 0 0
T17 64651 29 0 0
T18 33209 16 0 0
T19 0 2 0 0
T20 0 43 0 0
T21 0 20 0 0
T22 0 22 0 0
T23 0 24 0 0
T27 6858 0 0 0
T28 4465 0 0 0
T29 5724 0 0 0
T30 611 0 0 0
T31 61 0 0 0

Line Coverage for Instance : tb.dut.u_reg.u_adc_fsm_state_cdc.u_arb
Line No.TotalCoveredPercent
TOTAL464495.65
CONT_ASSIGN10000
ALWAYS11133100.00
ALWAYS1216466.67
CONT_ASSIGN13511100.00
ALWAYS13966100.00
ALWAYS15599100.00
CONT_ASSIGN18311100.00
ALWAYS1871717100.00
CONT_ASSIGN22811100.00
CONT_ASSIGN24311100.00
CONT_ASSIGN24411100.00

99 logic dst_update; 100 unreachable assign dst_update = dst_update_i & (dst_qs_o != dst_ds_i); 101 102 if (DstWrReq) begin : gen_wr_req 103 logic dst_lat_q; 104 logic dst_lat_d; 105 logic dst_update_req; 106 logic dst_update_ack; 107 req_sel_e id_q; 108 109 state_e state_q, state_d; 110 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 111 1/1 if (!rst_dst_ni) begin Tests: T1 T2 T3  112 1/1 state_q <= StIdle; Tests: T1 T2 T3  113 end else begin 114 1/1 state_q <= state_d; Tests: T1 T2 T3  115 end 116 end 117 118 logic busy; 119 logic dst_req_q, dst_req; 120 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 121 1/1 if (!rst_dst_ni) begin Tests: T1 T2 T3  122 1/1 dst_req_q <= '0; Tests: T1 T2 T3  123 1/1 end else if (dst_req_q && dst_lat_d) begin Tests: T1 T2 T3  124 // if request is held, when the transaction starts, 125 // automatically clear. 126 // dst_lat_d is safe to used here because dst_req_q, if set, 127 // always has priority over other hardware based events. 128 0/1 ==> dst_req_q <= '0; 129 1/1 end else if (dst_req_i && !dst_req_q && busy) begin Tests: T1 T2 T3  130 // if destination request arrives when a handshake event 131 // is already ongoing, hold on to request and send later 132 0/1 ==> dst_req_q <= 1'b1; 133 end MISSING_ELSE 134 end 135 1/1 assign dst_req = dst_req_q | dst_req_i; Tests: T1 T2 T3  136 137 // Hold data at the beginning of a transaction 138 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 139 1/1 if (!rst_dst_ni) begin Tests: T1 T2 T3  140 1/1 dst_qs_o <= ResetVal; Tests: T1 T2 T3  141 1/1 end else if (dst_lat_d) begin Tests: T1 T2 T3  142 1/1 dst_qs_o <= dst_ds_i; Tests: T6 T12 T60  143 1/1 end else if (dst_lat_q) begin Tests: T1 T2 T3  144 1/1 dst_qs_o <= dst_qs_i; Tests: T4 T5 T6  145 end MISSING_ELSE 146 end 147 148 // Which type of transaction is being ack'd back? 149 // 0 - software initiated request 150 // 1 - hardware initiated request 151 // The id information is used by prim_reg_cdc to disambiguate 152 // simultaneous updates from software and hardware. 153 // See scenario 2 case 3 for an example of how this is handled. 154 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin 155 1/1 if (!rst_dst_ni) begin Tests: T1 T2 T3  156 1/1 id_q <= SelSwReq; Tests: T1 T2 T3  157 1/1 end else if (dst_update_req && dst_update_ack) begin Tests: T1 T2 T3  158 1/1 id_q <= SelSwReq; Tests: T4 T5 T6  159 1/1 end else if (dst_req && dst_lat_d) begin Tests: T1 T2 T3  160 1/1 id_q <= SelSwReq; Tests: T6 T12 T60  161 1/1 end else if (!dst_req && dst_lat_d) begin Tests: T1 T2 T3  162 excluded id_q <= SelHwReq; Exclude Annotation: VC_COV_UNR 163 1/1 end else if (dst_lat_q) begin Tests: T1 T2 T3  164 1/1 id_q <= SelHwReq; Tests: T4 T5 T6  165 end MISSING_ELSE 166 end 167 168 // if a destination update is received when the system is idle and there is no 169 // software side request, hw update must be selected. 170 `ASSERT(DstUpdateReqCheck_A, ##1 dst_update & !dst_req & !busy |=> id_q == SelHwReq, 171 clk_dst_i, !rst_dst_ni) 172 173 // if hw select was chosen, then it must be the case there was a destination update 174 // indication or there was a difference between the transit register and the 175 // latest incoming value. 176 `ASSERT(HwIdSelCheck_A, $rose(id_q == SelHwReq) |-> $past(dst_update_i, 1) || 177 $past(dst_lat_q, 1), 178 clk_dst_i, !rst_dst_ni) 179 180 181 // send out prim_subreg request only when proceeding 182 // with software request 183 1/1 assign dst_req_o = ~busy & dst_req; Tests: T1 T2 T3  184 185 logic dst_hold_req; 186 always_comb begin 187 1/1 state_d = state_q; Tests: T1 T2 T3  188 1/1 dst_hold_req = '0; Tests: T1 T2 T3  189 190 // depending on when the request is received, we 191 // may latch d or q. 192 1/1 dst_lat_q = '0; Tests: T1 T2 T3  193 1/1 dst_lat_d = '0; Tests: T1 T2 T3  194 195 1/1 busy = 1'b1; Tests: T1 T2 T3  196 197 1/1 unique case (state_q) Tests: T1 T2 T3  198 StIdle: begin 199 1/1 busy = '0; Tests: T1 T2 T3  200 1/1 if (dst_req) begin Tests: T1 T2 T3  201 // there's a software issued request for change 202 1/1 state_d = StWait; Tests: T6 T12 T60  203 1/1 dst_lat_d = 1'b1; Tests: T6 T12 T60  204 1/1 end else if (dst_update) begin Tests: T1 T2 T3  205 unreachable state_d = StWait; 206 unreachable dst_lat_d = 1'b1; 207 1/1 end else if (dst_qs_o != dst_qs_i) begin Tests: T1 T2 T3  208 // there's a direct destination update 209 // that was blocked by an ongoing transaction 210 1/1 state_d = StWait; Tests: T4 T5 T6  211 1/1 dst_lat_q = 1'b1; Tests: T4 T5 T6  212 end MISSING_ELSE 213 end 214 215 StWait: begin 216 1/1 dst_hold_req = 1'b1; Tests: T4 T5 T6  217 1/1 if (dst_update_ack) begin Tests: T4 T5 T6  218 1/1 state_d = StIdle; Tests: T4 T5 T6  219 end MISSING_ELSE 220 end 221 222 default: begin 223 state_d = StIdle; 224 end 225 endcase // unique case (state_q) 226 end // always_comb 227 228 1/1 assign dst_update_req = dst_hold_req | dst_lat_d | dst_lat_q; Tests: T1 T2 T3  229 logic src_req; 230 prim_sync_reqack u_dst_update_sync ( 231 .clk_src_i(clk_dst_i), 232 .rst_src_ni(rst_dst_ni), 233 .clk_dst_i(clk_src_i), 234 .rst_dst_ni(rst_src_ni), 235 .req_chk_i(1'b1), 236 .src_req_i(dst_update_req), 237 .src_ack_o(dst_update_ack), 238 .dst_req_o(src_req), 239 // immediate ack 240 .dst_ack_i(src_req) 241 ); 242 243 1/1 assign src_ack_o = src_req & (id_q == SelSwReq); Tests: T1 T2 T3  244 1/1 assign src_update_o = src_req & (id_q == SelHwReq); Tests: T1 T2 T3 

Cond Coverage for Instance : tb.dut.u_reg.u_adc_fsm_state_cdc.u_arb
TotalCoveredPercent
Conditions383078.95
Logical383078.95
Non-Logical00
Event00

 LINE       100
 EXPRESSION (dst_update_i & (dst_qs_o != dst_ds_i))
             ------1-----   -----------2----------
-1--2-StatusTests
01CoveredT4,T5,T6
10Unreachable
11Unreachable

 LINE       100
 SUB-EXPRESSION (dst_qs_o != dst_ds_i)
                -----------1----------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT4,T5,T6

 LINE       123
 EXPRESSION (gen_wr_req.dst_req_q && gen_wr_req.dst_lat_d)
             ----------1---------    ----------2---------
-1--2-StatusTests
01CoveredT6,T12,T60
10Not Covered
11Not Covered

 LINE       129
 EXPRESSION (dst_req_i && ((!gen_wr_req.dst_req_q)) && gen_wr_req.busy)
             ----1----    ------------2------------    -------3-------
-1--2--3-StatusTests
011CoveredT4,T5,T6
101Not Covered
110CoveredT6,T12,T60
111Not Covered

 LINE       135
 EXPRESSION (gen_wr_req.dst_req_q | dst_req_i)
             ----------1---------   ----2----
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT6,T12,T60
10Not Covered

 LINE       157
 EXPRESSION (gen_wr_req.dst_update_req && gen_wr_req.dst_update_ack)
             ------------1------------    ------------2------------
-1--2-StatusTests
01Not Covered
10CoveredT4,T5,T6
11CoveredT4,T5,T6

 LINE       159
 EXPRESSION (gen_wr_req.dst_req && gen_wr_req.dst_lat_d)
             ---------1--------    ----------2---------
-1--2-StatusTestsExclude Annotation
01Excluded VC_COV_UNR
10Not Covered
11CoveredT6,T12,T60

 LINE       161
 EXPRESSION (((!gen_wr_req.dst_req)) && gen_wr_req.dst_lat_d)
             -----------1-----------    ----------2---------
-1--2-StatusTestsExclude Annotation
01Excluded VC_COV_UNR
10CoveredT1,T2,T3
11Excluded VC_COV_UNR

 LINE       183
 EXPRESSION (((~gen_wr_req.busy)) & gen_wr_req.dst_req)
             ----------1---------   ---------2--------
-1--2-StatusTests
01Not Covered
10CoveredT1,T2,T3
11CoveredT6,T12,T60

 LINE       207
 EXPRESSION (dst_qs_o != dst_qs_i)
            -----------1----------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT4,T5,T6

 LINE       228
 EXPRESSION (gen_wr_req.dst_hold_req | gen_wr_req.dst_lat_d | gen_wr_req.dst_lat_q)
             -----------1-----------   ----------2---------   ----------3---------
-1--2--3-StatusTests
000CoveredT1,T2,T3
001CoveredT4,T5,T6
010CoveredT6,T12,T60
100CoveredT4,T5,T6

 LINE       243
 EXPRESSION (gen_wr_req.src_req & (gen_wr_req.id_q == SelSwReq))
             ---------1--------   --------------2--------------
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT4,T5,T6
11CoveredT6,T12,T60

 LINE       243
 SUB-EXPRESSION (gen_wr_req.id_q == SelSwReq)
                --------------1--------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       244
 EXPRESSION (gen_wr_req.src_req & (gen_wr_req.id_q == SelHwReq))
             ---------1--------   --------------2--------------
-1--2-StatusTests
01CoveredT4,T5,T6
10CoveredT6,T12,T60
11CoveredT4,T5,T6

 LINE       244
 SUB-EXPRESSION (gen_wr_req.id_q == SelHwReq)
                --------------1--------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT4,T5,T6

Branch Coverage for Instance : tb.dut.u_reg.u_adc_fsm_state_cdc.u_arb
Line No.TotalCoveredPercent
Branches 21 18 85.71
IF 111 2 2 100.00
IF 121 4 2 50.00
IF 139 4 4 100.00
IF 155 5 5 100.00
CASE 197 6 5 83.33


111 if (!rst_dst_ni) begin -1- 112 state_q <= StIdle; ==> 113 end else begin 114 state_q <= state_d; ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T3
0 Covered T1,T2,T3


121 if (!rst_dst_ni) begin -1- 122 dst_req_q <= '0; ==> 123 end else if (dst_req_q && dst_lat_d) begin -2- 124 // if request is held, when the transaction starts, 125 // automatically clear. 126 // dst_lat_d is safe to used here because dst_req_q, if set, 127 // always has priority over other hardware based events. 128 dst_req_q <= '0; ==> 129 end else if (dst_req_i && !dst_req_q && busy) begin -3- 130 // if destination request arrives when a handshake event 131 // is already ongoing, hold on to request and send later 132 dst_req_q <= 1'b1; ==> 133 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Not Covered
0 0 1 Not Covered
0 0 0 Covered T1,T2,T3


139 if (!rst_dst_ni) begin -1- 140 dst_qs_o <= ResetVal; ==> 141 end else if (dst_lat_d) begin -2- 142 dst_qs_o <= dst_ds_i; ==> 143 end else if (dst_lat_q) begin -3- 144 dst_qs_o <= dst_qs_i; ==> 145 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T6,T12,T60
0 0 1 Covered T4,T5,T6
0 0 0 Covered T1,T2,T3


155 if (!rst_dst_ni) begin -1- 156 id_q <= SelSwReq; ==> 157 end else if (dst_update_req && dst_update_ack) begin -2- 158 id_q <= SelSwReq; ==> 159 end else if (dst_req && dst_lat_d) begin -3- 160 id_q <= SelSwReq; ==> 161 end else if (!dst_req && dst_lat_d) begin -4- 162 id_q <= SelHwReq; ==> (Excluded) Exclude Annotation: VC_COV_UNR 163 end else if (dst_lat_q) begin -5- 164 id_q <= SelHwReq; ==> 165 end MISSING_ELSE ==>

Branches:
-1--2--3--4--5-StatusTestsExclude Annotation
1 - - - - Covered T1,T2,T3
0 1 - - - Covered T4,T5,T6
0 0 1 - - Covered T6,T12,T60
0 0 0 1 - Excluded VC_COV_UNR
0 0 0 0 1 Covered T4,T5,T6
0 0 0 0 0 Covered T1,T2,T3


197 unique case (state_q) -1- 198 StIdle: begin 199 busy = '0; 200 if (dst_req) begin -2- 201 // there's a software issued request for change 202 state_d = StWait; ==> 203 dst_lat_d = 1'b1; 204 end else if (dst_update) begin -3- 205 state_d = StWait; ==> (Unreachable) 206 dst_lat_d = 1'b1; 207 end else if (dst_qs_o != dst_qs_i) begin -4- 208 // there's a direct destination update 209 // that was blocked by an ongoing transaction 210 state_d = StWait; ==> 211 dst_lat_q = 1'b1; 212 end MISSING_ELSE ==> 213 end 214 215 StWait: begin 216 dst_hold_req = 1'b1; 217 if (dst_update_ack) begin -5- 218 state_d = StIdle; ==> 219 end MISSING_ELSE ==> 220 end 221 222 default: begin 223 state_d = StIdle; ==>

Branches:
-1--2--3--4--5-StatusTests
StIdle 1 - - - Covered T6,T12,T60
StIdle 0 1 - - Unreachable
StIdle 0 0 1 - Covered T4,T5,T6
StIdle 0 0 0 - Covered T1,T2,T3
StWait - - - 1 Covered T4,T5,T6
StWait - - - 0 Covered T4,T5,T6
default - - - - Not Covered


Assert Coverage for Instance : tb.dut.u_reg.u_adc_fsm_state_cdc.u_arb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 2 2 100.00 1 50.00
Cover properties 0 0 0
Cover sequences 0 0 0
Total 2 2 100.00 1 50.00




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
gen_wr_req.DstUpdateReqCheck_A 33407435 0 0 920
gen_wr_req.HwIdSelCheck_A 33407435 3129370 0 0


gen_wr_req.DstUpdateReqCheck_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 33407435 0 0 920

gen_wr_req.HwIdSelCheck_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 33407435 3129370 0 0
T4 1176 120 0 0
T5 691 83 0 0
T6 1382 110 0 0
T7 1185 120 0 0
T8 1232 120 0 0
T9 721 76 0 0
T10 1199 120 0 0
T11 597 64 0 0
T12 0 21 0 0
T13 0 119 0 0
T24 1622 0 0 0
T25 83 0 0 0

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%