Line Coverage for Module :
kmac_errchk
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 63 | 61 | 96.83 |
| ALWAYS | 187 | 15 | 13 | 86.67 |
| CONT_ASSIGN | 236 | 1 | 1 | 100.00 |
| ALWAYS | 244 | 4 | 4 | 100.00 |
| ALWAYS | 250 | 4 | 4 | 100.00 |
| ALWAYS | 266 | 4 | 4 | 100.00 |
| CONT_ASSIGN | 304 | 0 | 0 | |
| ALWAYS | 309 | 6 | 6 | 100.00 |
| ALWAYS | 322 | 5 | 5 | 100.00 |
| CONT_ASSIGN | 376 | 1 | 1 | 100.00 |
| ALWAYS | 391 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 399 | 1 | 1 | 100.00 |
| ALWAYS | 402 | 19 | 19 | 100.00 |
186 always_comb begin
187 1/1 err_swsequence = 1'b 0;
Tests: T1 T2 T3
188 1/1 sparse_fsm_error_o = 1'b 0;
Tests: T1 T2 T3
189
190 1/1 unique case (st)
Tests: T1 T2 T3
191 StIdle: begin
192 // Allow Start command only
193 1/1 if (!(sw_cmd_i inside {CmdNone, CmdStart})) begin
Tests: T1 T2 T3
194 1/1 err_swsequence = 1'b 1;
Tests: T51 T31 T25
195 end
MISSING_ELSE
196 end
197
198 StMsgFeed: begin
199 // Allow Process only
200 1/1 if (!(sw_cmd_i inside {CmdNone, CmdProcess})) begin
Tests: T1 T2 T3
201 1/1 err_swsequence = 1'b 1;
Tests: T51 T31 T25
202 end
MISSING_ELSE
203 end
204
205 StProcessing: begin
206 1/1 if (sw_cmd_i != CmdNone) begin
Tests: T1 T2 T3
207 0/1 ==> err_swsequence = 1'b 1;
208 end
MISSING_ELSE
209 end
210
211 StAbsorbed: begin
212 // Allow ManualRun and Done
213 1/1 if (!(sw_cmd_i inside {CmdNone, CmdManualRun, CmdDone})) begin
Tests: T1 T2 T3
214 1/1 err_swsequence = 1'b 1;
Tests: T51 T31 T25
215 end
MISSING_ELSE
216 end
217
218 StSqueezing: begin
219 1/1 if (sw_cmd_i != CmdNone) begin
Tests: T1 T14 T16
220 0/1 ==> err_swsequence = 1'b 1;
221 end
MISSING_ELSE
222 end
223
224 StTerminalError: begin
225 1/1 err_swsequence = 1'b 0;
Tests: T4 T5 T6
226 1/1 sparse_fsm_error_o = 1'b 1;
Tests: T4 T5 T6
227 end
228
229 default: begin
230 err_swsequence = 1'b 0;
231 sparse_fsm_error_o = 1'b 1;
232 end
233 endcase
234 end
235
236 1/1 assign block_swcmd = (err_swsequence)
Tests: T1 T2 T3
237 || (err_modestrength
238 && !cfg_en_unsupported_modestrength_i)
239 || err_entropy_ready;
240
241 // sw_cmd_o latch
242 // To reduce the command path delay, sw_cmd is latched here
243 always_ff @(posedge clk_i or negedge rst_ni) begin
244 2/2 if (!rst_ni) sw_cmd_o <= CmdNone;
Tests: T1 T2 T3 | T1 T2 T3
245 2/2 else if (!block_swcmd) sw_cmd_o <= sw_cmd_i;
Tests: T1 T2 T3 | T1 T2 T3
MISSING_ELSE
246 end
247
248 // Mode & Strength
249 always_comb begin : check_modestrength
250 1/1 err_modestrength = 1'b 0;
Tests: T1 T2 T3
251
252 1/1 if (st == StIdle && st_d == StMsgFeed) begin
Tests: T1 T2 T3
253 // When moving to the next stage, checks the config
254 1/1 if (!((cfg_mode_i == Sha3 &&
Tests: T1 T2 T3
255 cfg_strength_i inside {L224, L256, L384, L512}) ||
256 ((cfg_mode_i == Shake || cfg_mode_i == CShake) &&
257 (cfg_strength_i inside {L128, L256})))) begin
258 1/1 err_modestrength = 1'b 1;
Tests: T51 T31 T25
259 end
MISSING_ELSE
260 end
MISSING_ELSE
261 end : check_modestrength
262
263
264 // Check prefix 6B is `encode_string("KMAC")`
265 always_comb begin : check_prefix
266 1/1 err_prefix = 1'b 0;
Tests: T1 T2 T3
267
268 1/1 if (st == StIdle && st_d == StMsgFeed && kmac_en_i) begin
Tests: T1 T2 T3
269 1/1 if (cfg_prefix_6B_i != EncodedStringKMAC) begin
Tests: T1 T2 T3
270 1/1 err_prefix = 1'b 1;
Tests: T51 T31 T25
271 end
MISSING_ELSE
272 end
MISSING_ELSE
273 end : check_prefix
274
275 if (EnMasking) begin : g_entropy_chk
276
277 always_ff @(posedge clk_i or negedge rst_ni) begin
278 if (!rst_ni) cfg_entropy_ready <= 1'b 0;
279 else if (err_processed_i) cfg_entropy_ready <= 1'b 0;
280 else if (entropy_ready_pulse_i && st == StIdle) begin
281 cfg_entropy_ready <= 1'b 1;
282 end
283 end
284
285 always_comb begin : check_entropy_ready
286 err_entropy_ready = 1'b 0;
287
288 if (st == StIdle && st_d == StMsgFeed && kmac_en_i) begin
289 if (!cfg_entropy_ready) begin
290 err_entropy_ready = 1'b 1;
291 end
292 end
293 end : check_entropy_ready
294
295 end else begin : g_pseudo_entropy_chk
296
297 // If EnMasking is 0, entropy module is not generated.
298 // tying the error signal to 0.
299 assign err_entropy_ready = 1'b 0;
300
301 assign cfg_entropy_ready = 1'b 1;
302
303 logic unused_cfg_entropy_ready;
304 unreachable assign unused_cfg_entropy_ready = cfg_entropy_ready;
305
306 end
307
308 always_comb begin : recode_st
309 1/1 unique case (st)
Tests: T1 T2 T3
310 1/1 StIdle : stL = StIdleL;
Tests: T1 T2 T3
311 1/1 StMsgFeed : stL = StMsgFeedL;
Tests: T1 T2 T3
312 1/1 StProcessing : stL = StProcessingL;
Tests: T1 T2 T3
313 1/1 StAbsorbed : stL = StAbsorbedL;
Tests: T1 T2 T3
314 1/1 StSqueezing : stL = StSqueezingL;
Tests: T1 T14 T16
315 default : stL = StErrorL;
316 endcase
317 end : recode_st
318
319 // Return error code
320 err_t err;
321 always_comb begin : err_return
322 1/1 err = '{valid: 1'b0, code: ErrNone, info: '0};
Tests: T1 T2 T3
323
324 1/1 priority case (1'b 1)
Tests: T1 T2 T3
325 err_swsequence: begin
326 1/1 err = '{ valid: 1'b 1,
Tests: T51 T31 T25
327 code: ErrSwCmdSequence,
328 info: {5'h0,
329 {err_swsequence, err_modestrength, err_prefix},
330 {5'h 0, stL},
331 {2'b0, sw_cmd_i}
332 }
333 };
334 end
335
336 err_modestrength: begin
337 1/1 err = '{ valid: 1'b 1,
Tests: T51 T31 T25
338 code: ErrUnexpectedModeStrength,
339 info: { 5'h 0,
340 {err_swsequence, err_modestrength, err_prefix},
341 8'h 0,
342 {2'b 00, cfg_mode_i},
343 {1'b 0, cfg_strength_i}
344 }
345 };
346 end
347
348 err_prefix: begin
349 1/1 err = '{ valid: 1'b 1,
Tests: T51 T31 T25
350 code: ErrIncorrectFunctionName,
351 info: { 5'h 0,
352 {err_swsequence, err_modestrength, err_prefix},
353 16'h 0000
354 }
355 };
356 end
357
358 err_entropy_ready: begin
359 unreachable err = '{ valid: 1'b 1,
360 code: ErrSwHashingWithoutEntropyReady,
361 info: { 8'({ err_entropy_ready,
362 err_swsequence,
363 err_modestrength,
364 err_prefix}),
365 16'({kmac_en_i, cfg_entropy_ready})
366 }
367 };
368 end
369
370 default: begin
371 err = '{valid: 1'b0, code: ErrNone, info: '0};
372 end
373 endcase
374 end : err_return
375
376 1/1 assign error_o = err;
Tests: T1 T2 T3
377
378 // If below failed, revise err_swsequence error response info field.
379 `ASSERT_INIT(ExpectedStSwCmdBits_A, $bits(st) == StateWidth && $bits(sw_cmd_i) == 6)
380
381 // If failed, revise err_modestrength error info field.
382 `ASSERT_INIT(ExpectedModeStrengthBits_A,
383 $bits(cfg_mode_i) == 2 && $bits(cfg_strength_i) == 3)
384
385
386 ///////////////////
387 // State Machine //
388 ///////////////////
389 st_e st_gated_d;
390
391 3/3 `PRIM_FLOP_SPARSE_FSM(u_state_regs, st_gated_d, st, st_e, StIdle)
Tests: T1 T2 T3 | T1 T2 T3 | T1 T2 T3
PRIM_FLOP_SPARSE_FSM(u_state_regs, st_gated_d, st, st_e, StIdle):
391.1 `ifdef SIMULATION
391.2 prim_sparse_fsm_flop #(
391.3 .StateEnumT(st_e),
391.4 .Width($bits(st_e)),
391.5 .ResetValue($bits(st_e)'(StIdle)),
391.6 .EnableAlertTriggerSVA(1),
391.7 .CustomForceName("st")
391.8 ) u_state_regs (
391.9 .clk_i ( clk_i ),
391.10 .rst_ni ( rst_ni ),
391.11 .state_i ( st_gated_d ),
391.12 .state_o ( )
391.13 );
391.14 always_ff @(posedge clk_i or negedge rst_ni) begin
391.15 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
391.16 1/1 st <= StIdle;
Tests: T1 T2 T3
391.17 end else begin
391.18 1/1 st <= st_gated_d;
Tests: T1 T2 T3
391.19 end
391.20 end
391.21 u_state_regs_A: assert property (@(posedge clk_i) disable iff ((!rst_ni) !== '0) (st === u_state_regs.state_o))
391.22 else begin
391.23 `ifdef UVM
391.24 uvm_pkg::uvm_report_error("ASSERT FAILED", "u_state_regs_A", uvm_pkg::UVM_NONE,
391.25 "../src/lowrisc_ip_kmac_0.1/rtl/kmac_errchk.sv", 391, "", 1);
391.26 `else
391.27 $error("%0t: (%0s:%0d) [%m] [ASSERT FAILED] %0s", $time, `__FILE__, `__LINE__,
391.28 `PRIM_STRINGIFY(u_state_regs_A));
391.29 `endif
391.30 end
391.31 `else
391.32 prim_sparse_fsm_flop #(
391.33 .StateEnumT(st_e),
391.34 .Width($bits(st_e)),
391.35 .ResetValue($bits(st_e)'(StIdle)),
391.36 .EnableAlertTriggerSVA(1)
391.37 ) u_state_regs (
391.38 .clk_i ( `PRIM_FLOP_CLK ),
391.39 .rst_ni ( `PRIM_FLOP_RST ),
391.40 .state_i ( st_gated_d ),
391.41 .state_o ( st )
391.42 );
391.43 `endif392
393 // ICEBOX(#14631): Move block_swcmd to PRIM_FLOP_SPARSE_FSM()
394 //
395 // It would be better to place this condition (block_swcmd) in `always_ff`
396 // block to clearly indicate the clock gating condition. However, the
397 // statemachine uses the sparse encoding scheme and macro. It prevents any
398 // latch enable signals.
399 1/1 assign st_gated_d = (block_swcmd) ? st : st_d ;
Tests: T1 T2 T3
400
401 always_comb begin : next_state
402 1/1 st_d = st;
Tests: T1 T2 T3
403
404 1/1 unique case (st)
Tests: T1 T2 T3
405 StIdle: begin
406 1/1 if (!app_active_i && sw_cmd_i == CmdStart) begin
Tests: T1 T2 T3
407 // Proceed to the next state only when the SW issues the Start command
408 // in a valid period.
409 1/1 st_d = StMsgFeed;
Tests: T1 T2 T3
410 end
MISSING_ELSE
411 end
412
413 StMsgFeed: begin
414 1/1 if (sw_cmd_i == CmdProcess) begin
Tests: T1 T2 T3
415 1/1 st_d = StProcessing;
Tests: T1 T2 T3
416 end
MISSING_ELSE
417 end
418
419 StProcessing: begin
420 1/1 if (prim_mubi_pkg::mubi4_test_true_strict(sha3_absorbed_i)) begin
Tests: T1 T2 T3
421 1/1 st_d = StAbsorbed;
Tests: T1 T2 T3
422 end
MISSING_ELSE
423 end
424
425 StAbsorbed: begin
426 1/1 if (sw_cmd_i == CmdManualRun) begin
Tests: T1 T2 T3
427 1/1 st_d = StSqueezing;
Tests: T1 T14 T16
428 1/1 end else if (sw_cmd_i == CmdDone) begin
Tests: T1 T2 T3
429 1/1 st_d = StIdle;
Tests: T1 T2 T3
430 end
MISSING_ELSE
431 end
432
433 StSqueezing: begin
434 1/1 if (keccak_done_i) begin
Tests: T1 T14 T16
435 1/1 st_d = StAbsorbed;
Tests: T1 T14 T16
436 end
MISSING_ELSE
437 end
438
439 StTerminalError: begin
440 // this state is terminal
441 1/1 st_d = st;
Tests: T4 T5 T6
442 end
443
444 default: begin
445 // this state is terminal
446 st_d = StTerminalError;
447 end
448 endcase
449
450 // SEC_CM: FSM.GLOBAL_ESC, FSM.LOCAL_ESC
451 // Unconditionally jump into the terminal error state
452 // if the life cycle controller triggers an escalation.
453 1/1 if (lc_ctrl_pkg::lc_tx_test_true_loose(lc_escalate_en_i)) begin
Tests: T1 T2 T3
454 1/1 st_d = StTerminalError;
Tests: T4 T5 T6
455 end
MISSING_ELSE
456
457 1/1 if (st_d != StTerminalError &&
Tests: T1 T2 T3
458 prim_mubi_pkg::mubi4_test_true_strict(clear_after_error_i)) begin
459 1/1 st_d = StIdle;
Tests: T11 T19 T20
460 end
MISSING_ELSE
Cond Coverage for Module :
kmac_errchk
| Total | Covered | Percent |
|---|
| Conditions | 60 | 58 | 96.67 |
| Logical | 60 | 58 | 96.67 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 206
EXPRESSION (sw_cmd_i != CmdNone)
----------1----------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Not Covered | |
LINE 219
EXPRESSION (sw_cmd_i != CmdNone)
----------1----------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T14,T16 |
| 1 | Not Covered | |
LINE 236
EXPRESSION (err_swsequence || (err_modestrength && ((!cfg_en_unsupported_modestrength_i))) || err_entropy_ready)
-------1------ ------------------------------2----------------------------- --------3--------
| -1- | -2- | -3- | Status | Tests |
|---|
| 0 | 0 | 0 | Covered | T1,T2,T3 |
| 0 | 0 | 1 | Unreachable | |
| 0 | 1 | 0 | Covered | T51,T31,T25 |
| 1 | 0 | 0 | Covered | T51,T31,T25 |
LINE 236
SUB-EXPRESSION (err_modestrength && ((!cfg_en_unsupported_modestrength_i)))
--------1------- -------------------2------------------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T51,T31,T25 |
| 1 | 1 | Covered | T51,T31,T25 |
LINE 252
EXPRESSION ((st == StIdle) && (st_d == StMsgFeed))
-------1------ ---------2---------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T2,T3 |
LINE 252
SUB-EXPRESSION (st == StIdle)
-------1------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 252
SUB-EXPRESSION (st_d == StMsgFeed)
---------1---------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 254
EXPRESSION
Number Term
1 (((cfg_mode_i == Sha3) && (cfg_strength_i inside {L224, L256, L384, L512})) || (((cfg_mode_i == Shake) || (cfg_mode_i == CShake)) && (cfg_strength_i inside {L128, L256}))) )
| -1- | Status | Tests |
|---|
| 0 | Covered | T51,T31,T25 |
| 1 | Covered | T1,T2,T3 |
LINE 254
SUB-EXPRESSION
Number Term
1 ((cfg_mode_i == Sha3) && (cfg_strength_i inside {L224, L256, L384, L512})) ||
2 (((cfg_mode_i == Shake) || (cfg_mode_i == CShake)) && (cfg_strength_i inside {L128, L256})))
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T51,T31,T25 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T17,T77 |
LINE 254
SUB-EXPRESSION ((cfg_mode_i == Sha3) && (cfg_strength_i inside {L224, L256, L384, L512}))
----------1--------- ------------------------2-----------------------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T14,T16 |
| 1 | 0 | Covered | T51,T31,T25 |
| 1 | 1 | Covered | T1,T17,T77 |
LINE 254
SUB-EXPRESSION (cfg_mode_i == Sha3)
----------1---------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T17,T77 |
LINE 254
SUB-EXPRESSION (((cfg_mode_i == Shake) || (cfg_mode_i == CShake)) && (cfg_strength_i inside {L128, L256}))
------------------------1------------------------ ------------------2-----------------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T57,T71,T75 |
| 1 | 0 | Covered | T51,T31,T25 |
| 1 | 1 | Covered | T1,T2,T3 |
LINE 254
SUB-EXPRESSION ((cfg_mode_i == Shake) || (cfg_mode_i == CShake))
----------1---------- -----------2----------
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T17,T77 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T14,T16 |
LINE 254
SUB-EXPRESSION (cfg_mode_i == Shake)
----------1----------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T14,T16 |
LINE 254
SUB-EXPRESSION (cfg_mode_i == CShake)
-----------1----------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T14,T16 |
| 1 | Covered | T1,T2,T3 |
LINE 268
EXPRESSION ((st == StIdle) && (st_d == StMsgFeed) && kmac_en_i)
-------1------ ---------2--------- ----3----
| -1- | -2- | -3- | Status | Tests |
|---|
| 0 | 1 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | 1 | Covered | T1,T2,T3 |
| 1 | 1 | 0 | Covered | T1,T14,T16 |
| 1 | 1 | 1 | Covered | T1,T2,T3 |
LINE 268
SUB-EXPRESSION (st == StIdle)
-------1------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 268
SUB-EXPRESSION (st_d == StMsgFeed)
---------1---------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 269
EXPRESSION (cfg_prefix_6B_i != kmac_pkg::EncodedStringKMAC)
------------------------1-----------------------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T51,T31,T25 |
LINE 399
EXPRESSION (block_swcmd ? st : st_d)
-----1-----
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T51,T31,T25 |
LINE 406
EXPRESSION (((!app_active_i)) && (sw_cmd_i == CmdStart))
--------1-------- -----------2----------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T25,T26,T27 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T2,T3 |
LINE 406
SUB-EXPRESSION (sw_cmd_i == CmdStart)
-----------1----------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 414
EXPRESSION (sw_cmd_i == CmdProcess)
------------1-----------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 426
EXPRESSION (sw_cmd_i == CmdManualRun)
-------------1------------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T14,T16 |
LINE 428
EXPRESSION (sw_cmd_i == CmdDone)
----------1----------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
FSM Coverage for Module :
kmac_errchk
Summary for FSM :: st
| Total | Covered | Percent | |
| States |
6 |
6 |
100.00 |
(Not included in score) |
| Transitions |
15 |
10 |
66.67 |
|
| Sequences |
0 |
0 |
|
|
State, Transition and Sequence Details for FSM :: st
| states | Line No. | Covered | Tests |
| StAbsorbed |
421 |
Covered |
T1,T2,T3 |
| StIdle |
429 |
Covered |
T1,T2,T3 |
| StMsgFeed |
409 |
Covered |
T1,T2,T3 |
| StProcessing |
415 |
Covered |
T1,T2,T3 |
| StSqueezing |
427 |
Covered |
T1,T14,T16 |
| StTerminalError |
454 |
Covered |
T4,T5,T6 |
| transitions | Line No. | Covered | Tests |
| StAbsorbed->StIdle |
429 |
Covered |
T1,T2,T3 |
| StAbsorbed->StSqueezing |
427 |
Covered |
T1,T14,T16 |
| StAbsorbed->StTerminalError |
454 |
Covered |
T58 |
| StIdle->StMsgFeed |
409 |
Covered |
T1,T2,T3 |
| StIdle->StTerminalError |
454 |
Covered |
T4,T6,T9 |
| StMsgFeed->StIdle |
459 |
Not Covered |
|
| StMsgFeed->StProcessing |
415 |
Covered |
T1,T2,T3 |
| StMsgFeed->StTerminalError |
454 |
Covered |
T5,T44,T45 |
| StProcessing->StAbsorbed |
421 |
Covered |
T1,T2,T3 |
| StProcessing->StIdle |
459 |
Not Covered |
|
| StProcessing->StTerminalError |
454 |
Not Covered |
|
| StSqueezing->StAbsorbed |
435 |
Covered |
T1,T14,T16 |
| StSqueezing->StIdle |
459 |
Not Covered |
|
| StSqueezing->StTerminalError |
454 |
Not Covered |
|
| StTerminalError->StIdle |
459 |
Covered |
T4,T5,T6 |
Branch Coverage for Module :
kmac_errchk
| Line No. | Total | Covered | Percent |
| Branches |
|
52 |
50 |
96.15 |
| TERNARY |
399 |
2 |
2 |
100.00 |
| CASE |
190 |
12 |
10 |
83.33 |
| IF |
244 |
3 |
3 |
100.00 |
| IF |
252 |
3 |
3 |
100.00 |
| IF |
268 |
3 |
3 |
100.00 |
| CASE |
309 |
6 |
6 |
100.00 |
| CASE |
324 |
4 |
4 |
100.00 |
| IF |
391 |
2 |
2 |
100.00 |
| CASE |
404 |
13 |
13 |
100.00 |
| IF |
453 |
2 |
2 |
100.00 |
| IF |
457 |
2 |
2 |
100.00 |
399 assign st_gated_d = (block_swcmd) ? st : st_d ;
-1-
==>
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T51,T31,T25 |
| 0 |
Covered |
T1,T2,T3 |
190 unique case (st)
-1-
191 StIdle: begin
192 // Allow Start command only
193 if (!(sw_cmd_i inside {CmdNone, CmdStart})) begin
-2-
194 err_swsequence = 1'b 1;
==>
195 end
MISSING_ELSE
==>
196 end
197
198 StMsgFeed: begin
199 // Allow Process only
200 if (!(sw_cmd_i inside {CmdNone, CmdProcess})) begin
-3-
201 err_swsequence = 1'b 1;
==>
202 end
MISSING_ELSE
==>
203 end
204
205 StProcessing: begin
206 if (sw_cmd_i != CmdNone) begin
-4-
207 err_swsequence = 1'b 1;
==>
208 end
MISSING_ELSE
==>
209 end
210
211 StAbsorbed: begin
212 // Allow ManualRun and Done
213 if (!(sw_cmd_i inside {CmdNone, CmdManualRun, CmdDone})) begin
-5-
214 err_swsequence = 1'b 1;
==>
215 end
MISSING_ELSE
==>
216 end
217
218 StSqueezing: begin
219 if (sw_cmd_i != CmdNone) begin
-6-
220 err_swsequence = 1'b 1;
==>
221 end
MISSING_ELSE
==>
222 end
223
224 StTerminalError: begin
225 err_swsequence = 1'b 0;
==>
226 sparse_fsm_error_o = 1'b 1;
227 end
228
229 default: begin
230 err_swsequence = 1'b 0;
==>
Branches:
| -1- | -2- | -3- | -4- | -5- | -6- | Status | Tests |
| StIdle |
1 |
- |
- |
- |
- |
Covered |
T51,T31,T25 |
| StIdle |
0 |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StMsgFeed |
- |
1 |
- |
- |
- |
Covered |
T51,T31,T25 |
| StMsgFeed |
- |
0 |
- |
- |
- |
Covered |
T1,T2,T3 |
| StProcessing |
- |
- |
1 |
- |
- |
Not Covered |
|
| StProcessing |
- |
- |
0 |
- |
- |
Covered |
T1,T2,T3 |
| StAbsorbed |
- |
- |
- |
1 |
- |
Covered |
T51,T31,T25 |
| StAbsorbed |
- |
- |
- |
0 |
- |
Covered |
T1,T2,T3 |
| StSqueezing |
- |
- |
- |
- |
1 |
Not Covered |
|
| StSqueezing |
- |
- |
- |
- |
0 |
Covered |
T1,T14,T16 |
| StTerminalError |
- |
- |
- |
- |
- |
Covered |
T4,T5,T6 |
| default |
- |
- |
- |
- |
- |
Covered |
T6,T9,T10 |
244 if (!rst_ni) sw_cmd_o <= CmdNone;
-1-
==>
245 else if (!block_swcmd) sw_cmd_o <= sw_cmd_i;
-2-
==>
MISSING_ELSE
==>
Branches:
| -1- | -2- | Status | Tests |
| 1 |
- |
Covered |
T1,T2,T3 |
| 0 |
1 |
Covered |
T1,T2,T3 |
| 0 |
0 |
Covered |
T51,T31,T25 |
252 if (st == StIdle && st_d == StMsgFeed) begin
-1-
253 // When moving to the next stage, checks the config
254 if (!((cfg_mode_i == Sha3 &&
-2-
255 cfg_strength_i inside {L224, L256, L384, L512}) ||
256 ((cfg_mode_i == Shake || cfg_mode_i == CShake) &&
257 (cfg_strength_i inside {L128, L256})))) begin
258 err_modestrength = 1'b 1;
==>
259 end
MISSING_ELSE
==>
260 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | Status | Tests |
| 1 |
1 |
Covered |
T51,T31,T25 |
| 1 |
0 |
Covered |
T1,T2,T3 |
| 0 |
- |
Covered |
T1,T2,T3 |
268 if (st == StIdle && st_d == StMsgFeed && kmac_en_i) begin
-1-
269 if (cfg_prefix_6B_i != EncodedStringKMAC) begin
-2-
270 err_prefix = 1'b 1;
==>
271 end
MISSING_ELSE
==>
272 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | Status | Tests |
| 1 |
1 |
Covered |
T51,T31,T25 |
| 1 |
0 |
Covered |
T1,T2,T3 |
| 0 |
- |
Covered |
T1,T2,T3 |
309 unique case (st)
-1-
310 StIdle : stL = StIdleL;
==>
311 StMsgFeed : stL = StMsgFeedL;
==>
312 StProcessing : stL = StProcessingL;
==>
313 StAbsorbed : stL = StAbsorbedL;
==>
314 StSqueezing : stL = StSqueezingL;
==>
315 default : stL = StErrorL;
==>
Branches:
| -1- | Status | Tests |
| StIdle |
Covered |
T1,T2,T3 |
| StMsgFeed |
Covered |
T1,T2,T3 |
| StProcessing |
Covered |
T1,T2,T3 |
| StAbsorbed |
Covered |
T1,T2,T3 |
| StSqueezing |
Covered |
T1,T14,T16 |
| default |
Covered |
T4,T5,T6 |
324 priority case (1'b 1)
-1-
325 err_swsequence: begin
326 err = '{ valid: 1'b 1,
==>
327 code: ErrSwCmdSequence,
328 info: {5'h0,
329 {err_swsequence, err_modestrength, err_prefix},
330 {5'h 0, stL},
331 {2'b0, sw_cmd_i}
332 }
333 };
334 end
335
336 err_modestrength: begin
337 err = '{ valid: 1'b 1,
==>
338 code: ErrUnexpectedModeStrength,
339 info: { 5'h 0,
340 {err_swsequence, err_modestrength, err_prefix},
341 8'h 0,
342 {2'b 00, cfg_mode_i},
343 {1'b 0, cfg_strength_i}
344 }
345 };
346 end
347
348 err_prefix: begin
349 err = '{ valid: 1'b 1,
==>
350 code: ErrIncorrectFunctionName,
351 info: { 5'h 0,
352 {err_swsequence, err_modestrength, err_prefix},
353 16'h 0000
354 }
355 };
356 end
357
358 err_entropy_ready: begin
359 err = '{ valid: 1'b 1,
==> (Unreachable)
360 code: ErrSwHashingWithoutEntropyReady,
361 info: { 8'({ err_entropy_ready,
362 err_swsequence,
363 err_modestrength,
364 err_prefix}),
365 16'({kmac_en_i, cfg_entropy_ready})
366 }
367 };
368 end
369
370 default: begin
371 err = '{valid: 1'b0, code: ErrNone, info: '0};
==>
Branches:
| -1- | Status | Tests |
| err_swsequence |
Covered |
T51,T31,T25 |
| err_modestrength |
Covered |
T51,T31,T25 |
| err_prefix |
Covered |
T51,T31,T25 |
| err_entropy_ready |
Unreachable |
|
| default |
Covered |
T1,T2,T3 |
391 `PRIM_FLOP_SPARSE_FSM(u_state_regs, st_gated_d, st, st_e, StIdle)
-1-
==>
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
404 unique case (st)
-1-
405 StIdle: begin
406 if (!app_active_i && sw_cmd_i == CmdStart) begin
-2-
407 // Proceed to the next state only when the SW issues the Start command
408 // in a valid period.
409 st_d = StMsgFeed;
==>
410 end
MISSING_ELSE
==>
411 end
412
413 StMsgFeed: begin
414 if (sw_cmd_i == CmdProcess) begin
-3-
415 st_d = StProcessing;
==>
416 end
MISSING_ELSE
==>
417 end
418
419 StProcessing: begin
420 if (prim_mubi_pkg::mubi4_test_true_strict(sha3_absorbed_i)) begin
-4-
421 st_d = StAbsorbed;
==>
422 end
MISSING_ELSE
==>
423 end
424
425 StAbsorbed: begin
426 if (sw_cmd_i == CmdManualRun) begin
-5-
427 st_d = StSqueezing;
==>
428 end else if (sw_cmd_i == CmdDone) begin
-6-
429 st_d = StIdle;
==>
430 end
MISSING_ELSE
==>
431 end
432
433 StSqueezing: begin
434 if (keccak_done_i) begin
-7-
435 st_d = StAbsorbed;
==>
436 end
MISSING_ELSE
==>
437 end
438
439 StTerminalError: begin
440 // this state is terminal
441 st_d = st;
==>
442 end
443
444 default: begin
445 // this state is terminal
446 st_d = StTerminalError;
==>
Branches:
| -1- | -2- | -3- | -4- | -5- | -6- | -7- | Status | Tests |
| StIdle |
1 |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StIdle |
0 |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StMsgFeed |
- |
1 |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StMsgFeed |
- |
0 |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StProcessing |
- |
- |
1 |
- |
- |
- |
Covered |
T1,T2,T3 |
| StProcessing |
- |
- |
0 |
- |
- |
- |
Covered |
T1,T2,T3 |
| StAbsorbed |
- |
- |
- |
1 |
- |
- |
Covered |
T1,T14,T16 |
| StAbsorbed |
- |
- |
- |
0 |
1 |
- |
Covered |
T1,T2,T3 |
| StAbsorbed |
- |
- |
- |
0 |
0 |
- |
Covered |
T1,T2,T3 |
| StSqueezing |
- |
- |
- |
- |
- |
1 |
Covered |
T1,T14,T16 |
| StSqueezing |
- |
- |
- |
- |
- |
0 |
Covered |
T1,T14,T16 |
| StTerminalError |
- |
- |
- |
- |
- |
- |
Covered |
T4,T5,T6 |
| default |
- |
- |
- |
- |
- |
- |
Covered |
T6,T9,T10 |
453 if (lc_ctrl_pkg::lc_tx_test_true_loose(lc_escalate_en_i)) begin
-1-
454 st_d = StTerminalError;
==>
455 end
MISSING_ELSE
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T4,T5,T6 |
| 0 |
Covered |
T1,T2,T3 |
457 if (st_d != StTerminalError &&
-1-
458 prim_mubi_pkg::mubi4_test_true_strict(clear_after_error_i)) begin
459 st_d = StIdle;
==>
460 end
MISSING_ELSE
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T11,T19,T20 |
| 0 |
Covered |
T1,T2,T3 |
Assert Coverage for Module :
kmac_errchk
Assertion Details
ExpectedModeStrengthBits_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
663 |
663 |
0 |
0 |
| T1 |
1 |
1 |
0 |
0 |
| T2 |
1 |
1 |
0 |
0 |
| T3 |
1 |
1 |
0 |
0 |
| T4 |
1 |
1 |
0 |
0 |
| T11 |
1 |
1 |
0 |
0 |
| T12 |
1 |
1 |
0 |
0 |
| T13 |
1 |
1 |
0 |
0 |
| T14 |
1 |
1 |
0 |
0 |
| T15 |
1 |
1 |
0 |
0 |
| T18 |
1 |
1 |
0 |
0 |
ExpectedStSwCmdBits_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
663 |
663 |
0 |
0 |
| T1 |
1 |
1 |
0 |
0 |
| T2 |
1 |
1 |
0 |
0 |
| T3 |
1 |
1 |
0 |
0 |
| T4 |
1 |
1 |
0 |
0 |
| T11 |
1 |
1 |
0 |
0 |
| T12 |
1 |
1 |
0 |
0 |
| T13 |
1 |
1 |
0 |
0 |
| T14 |
1 |
1 |
0 |
0 |
| T15 |
1 |
1 |
0 |
0 |
| T18 |
1 |
1 |
0 |
0 |
StKnown_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
579142877 |
579015708 |
0 |
0 |
| T1 |
476532 |
476455 |
0 |
0 |
| T2 |
2586 |
2520 |
0 |
0 |
| T3 |
5314 |
5222 |
0 |
0 |
| T4 |
2529 |
2369 |
0 |
0 |
| T11 |
49807 |
49724 |
0 |
0 |
| T12 |
2377 |
2312 |
0 |
0 |
| T13 |
86036 |
85980 |
0 |
0 |
| T14 |
30058 |
29996 |
0 |
0 |
| T15 |
6021 |
5961 |
0 |
0 |
| T18 |
1756 |
1667 |
0 |
0 |
u_state_regs_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
579142877 |
579015708 |
0 |
0 |
| T1 |
476532 |
476455 |
0 |
0 |
| T2 |
2586 |
2520 |
0 |
0 |
| T3 |
5314 |
5222 |
0 |
0 |
| T4 |
2529 |
2369 |
0 |
0 |
| T11 |
49807 |
49724 |
0 |
0 |
| T12 |
2377 |
2312 |
0 |
0 |
| T13 |
86036 |
85980 |
0 |
0 |
| T14 |
30058 |
29996 |
0 |
0 |
| T15 |
6021 |
5961 |
0 |
0 |
| T18 |
1756 |
1667 |
0 |
0 |
