Line Coverage for Module :
sha3pad
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 170 | 169 | 99.41 |
| ALWAYS | 157 | 6 | 6 | 100.00 |
| CONT_ASSIGN | 209 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 213 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 236 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 242 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 247 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 257 | 1 | 1 | 100.00 |
| ALWAYS | 267 | 6 | 6 | 100.00 |
| ALWAYS | 279 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 286 | 1 | 1 | 100.00 |
| ALWAYS | 293 | 3 | 3 | 100.00 |
| ALWAYS | 298 | 76 | 75 | 98.68 |
| CONT_ASSIGN | 509 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 520 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 538 | 1 | 1 | 100.00 |
| ALWAYS | 558 | 4 | 4 | 100.00 |
| CONT_ASSIGN | 578 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 588 | 1 | 1 | 100.00 |
| ALWAYS | 591 | 5 | 5 | 100.00 |
| ALWAYS | 603 | 5 | 5 | 100.00 |
| ALWAYS | 615 | 5 | 5 | 100.00 |
| ALWAYS | 664 | 10 | 10 | 100.00 |
| ALWAYS | 680 | 17 | 17 | 100.00 |
| ALWAYS | 779 | 6 | 6 | 100.00 |
| ALWAYS | 788 | 6 | 6 | 100.00 |
| ALWAYS | 798 | 6 | 6 | 100.00 |
156 always_comb begin
157 1/1 unique case (strength_i)
Tests: T1 T2 T3
158 1/1 L128: block_addr_limit = KeccakCountW'(KeccakRate[L128]);
Tests: T1 T2 T3
159 1/1 L224: block_addr_limit = KeccakCountW'(KeccakRate[L224]);
Tests: T41 T57 T47
160 1/1 L256: block_addr_limit = KeccakCountW'(KeccakRate[L256]);
Tests: T1 T2 T3
161 1/1 L384: block_addr_limit = KeccakCountW'(KeccakRate[L384]);
Tests: T3 T8 T4
162 1/1 L512: block_addr_limit = KeccakCountW'(KeccakRate[L512]);
Tests: T38 T41 T57
163
164 default: block_addr_limit = '0;
165 endcase
166 end
167
168 /////////////////////
169 // Control Signals //
170 /////////////////////
171
172 // `sel_mux` selects the output data among the incoming or internally generated data.
173 // MuxFifo: data from external (msg_data_i)
174 // MuxPrefix: bytepad(encode_string(N)||encode_string(S), )
175 // MuxFuncPad: function_pad with end of message
176 // MuxZeroEnd: all 0
177 mux_sel_e sel_mux;
178
179 // `sent_message` indicates the number of entries sent to keccak round per
180 // block. The value shall be enough to cover Maximum entry of the Keccak
181 // storage as defined in sha3_pkg, `$clog2(KeccakEntries+1)`. Logically,
182 // it is not needed to have more than KeccakEntries but for safety in case of
183 // SHA3 context switch resuming the SHA3 from the middle of sponge
184 // construction. If needed, the software should be able to write whole 1600
185 // bits. The `sent_message` is used to check sent_blocksize.
186 logic [KeccakCountW-1:0] sent_message;
187 logic inc_sentmsg, clr_sentmsg;
188
189 // This primitive is used to place a hardened counter
190 // SEC_CM: CTR.REDUN
191 prim_count #(
192 .Width(KeccakCountW)
193 ) u_sentmsg_count (
194 .clk_i,
195 .rst_ni,
196 .clr_i(clr_sentmsg),
197 .set_i(1'b0),
198 .set_cnt_i(KeccakCountW'(0)),
199 .incr_en_i(inc_sentmsg),
200 .decr_en_i(1'b0),
201 .step_i(KeccakCountW'(1)),
202 .commit_i(1'b1),
203 .cnt_o(sent_message),
204 .cnt_after_commit_o(),
205 .err_o(msg_count_error_o)
206 );
207
208
209 1/1 assign inc_sentmsg = keccak_valid_o & keccak_ready_i ;
Tests: T1 T2 T3
210
211 // Prefix index to slice the `prefix` n-bits into multiple of 64bit.
212 logic [KeccakMsgAddrW-1:0] prefix_index;
213 1/1 assign prefix_index = (sent_message < block_addr_limit) ? sent_message : '0;
Tests: T1 T2 T3
214
215 // fsm_keccak_valid is an output signal from FSM which to send data generated
216 // inside the pad logic to keccak_round
217 logic fsm_keccak_valid;
218
219 // hold_msg to prevent message from being forwarded into keccak_round and
220 // acked. Mainly the usage is to hold the message and initiates the
221 // keccak_round for current block.
222 logic hold_msg;
223
224 // latch the partial write. Latched data is used for funcpad_merged
225 logic en_msgbuf;
226 logic clr_msgbuf;
227
228 ///////////////////
229 // State Machine //
230 ///////////////////
231
232 // Inputs
233
234 // FSM moves to StPrefix only when cSHAKE is enabled
235 logic mode_eq_cshake;
236 1/1 assign mode_eq_cshake = (mode_i == CShake) ? 1'b 1 : 1'b 0;
Tests: T1 T2 T3
237
238 // `sent_blocksize` indicates the pad logic pushed block size data into
239 // keccak round logic.
240 logic sent_blocksize;
241
242 1/1 assign sent_blocksize = (sent_message == block_addr_limit) ? 1'b 1 : 1'b 0;
Tests: T1 T2 T3
243
244 // `keccak_ack` indicates the request is accepted in keccak_round
245 logic keccak_ack;
246
247 1/1 assign keccak_ack = keccak_valid_o & keccak_ready_i ;
Tests: T1 T2 T3
248
249 // msg_partial indicates the incoming message is partial write or not.
250 // This is used to check if the incoming message need to be latched inside or
251 // not. If no partial message is at the end, msg_buf doesn't have to latch
252 // msg_data_i. It is assumed that the partial message is permitted only at
253 // the end of the message. So if (msg_valid_i && msg_partial && msg_ready_o),
254 // there will be no msg_valid_i till process_latched.
255 // Shall be used with msg_valid_i together.
256 logic msg_partial;
257 1/1 assign msg_partial = (&msg_strb_i != 1'b 1);
Tests: T1 T2 T3
258
259
260 // `process_latched` latches the `process_i` input before it is seen in the
261 // FSM. `process_i` may follow `start_i` too fast so that the FSM may not
262 // see it fast enought in case of cSHAKE mode. cSHAKE needs to process the
263 // prefix prior to see the process indicator.
264 logic process_latched;
265
266 always_ff @(posedge clk_i or negedge rst_ni) begin
267 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
268 1/1 process_latched <= 1'b 0;
Tests: T1 T2 T3
269 1/1 end else if (process_i) begin
Tests: T1 T2 T3
270 1/1 process_latched <= 1'b 1;
Tests: T1 T2 T3
271 1/1 end else if (prim_mubi_pkg::mubi4_test_true_strict(done_i)) begin
Tests: T1 T2 T3
272 1/1 process_latched <= 1'b0;
Tests: T1 T2 T3
273 end
MISSING_ELSE
274 end
275
276 // State Register ===========================================================
277 pad_st_e st, st_d;
278
279 3/3 `PRIM_FLOP_SPARSE_FSM(u_state_regs, st_d, st, pad_st_e, StPadIdle)
Tests: T1 T2 T3 | T1 T2 T3 | T1 T2 T3
PRIM_FLOP_SPARSE_FSM(u_state_regs, st_d, st, pad_st_e, StPadIdle):
279.1 `ifdef SIMULATION
279.2 prim_sparse_fsm_flop #(
279.3 .StateEnumT(pad_st_e),
279.4 .Width($bits(pad_st_e)),
279.5 .ResetValue($bits(pad_st_e)'(StPadIdle)),
279.6 .EnableAlertTriggerSVA(1),
279.7 .CustomForceName("st")
279.8 ) u_state_regs (
279.9 .clk_i ( clk_i ),
279.10 .rst_ni ( rst_ni ),
279.11 .state_i ( st_d ),
279.12 .state_o ( )
279.13 );
279.14 always_ff @(posedge clk_i or negedge rst_ni) begin
279.15 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
279.16 1/1 st <= StPadIdle;
Tests: T1 T2 T3
279.17 end else begin
279.18 1/1 st <= st_d;
Tests: T1 T2 T3
279.19 end
279.20 end
279.21 u_state_regs_A: assert property (@(posedge clk_i) disable iff ((!rst_ni) !== '0) (st === u_state_regs.state_o))
279.22 else begin
279.23 `ifdef UVM
279.24 uvm_pkg::uvm_report_error("ASSERT FAILED", "u_state_regs_A", uvm_pkg::UVM_NONE,
279.25 "../src/lowrisc_ip_sha3_0.1/rtl/sha3pad.sv", 279, "", 1);
279.26 `else
279.27 $error("%0t: (%0s:%0d) [%m] [ASSERT FAILED] %0s", $time, `__FILE__, `__LINE__,
279.28 `PRIM_STRINGIFY(u_state_regs_A));
279.29 `endif
279.30 end
279.31 `else
279.32 prim_sparse_fsm_flop #(
279.33 .StateEnumT(pad_st_e),
279.34 .Width($bits(pad_st_e)),
279.35 .ResetValue($bits(pad_st_e)'(StPadIdle)),
279.36 .EnableAlertTriggerSVA(1)
279.37 ) u_state_regs (
279.38 .clk_i ( `PRIM_FLOP_CLK ),
279.39 .rst_ni ( `PRIM_FLOP_RST ),
279.40 .state_i ( st_d ),
279.41 .state_o ( st )
279.42 );
279.43 `endif280
281 // `end_of_block` indicates current beat is end of the block
282 // It shall set when the address reaches to the end of the block. End address
283 // is set by the strength_i, which is `block_addr_limit`.
284 logic end_of_block;
285
286 1/1 assign end_of_block = ((sent_message + 1'b1) == block_addr_limit) ? 1'b 1 : 1'b 0;
Tests: T1 T2 T3
287
288
289 // Next logic and output logic ==============================================
290 // SEC_CM: ABSORBED.CTRL.MUBI
291 prim_mubi_pkg::mubi4_t absorbed_d;
292 always_ff @(posedge clk_i or negedge rst_ni) begin
293 2/2 if (!rst_ni) absorbed_o <= prim_mubi_pkg::MuBi4False;
Tests: T1 T2 T3 | T1 T2 T3
294 1/1 else absorbed_o <= absorbed_d;
Tests: T1 T2 T3
295 end
296
297 always_comb begin
298 1/1 st_d = st;
Tests: T1 T2 T3
299
300 // FSM output : default values
301 1/1 keccak_run_o = 1'b 0;
Tests: T1 T2 T3
302 1/1 sel_mux = MuxNone;
Tests: T1 T2 T3
303
304 1/1 fsm_keccak_valid = 1'b 0;
Tests: T1 T2 T3
305
306 1/1 hold_msg = 1'b 0;
Tests: T1 T2 T3
307 1/1 clr_sentmsg = 1'b 0;
Tests: T1 T2 T3
308
309 1/1 en_msgbuf = 1'b 0;
Tests: T1 T2 T3
310 1/1 clr_msgbuf = 1'b 0;
Tests: T1 T2 T3
311
312 1/1 absorbed_d = prim_mubi_pkg::MuBi4False;
Tests: T1 T2 T3
313
314 1/1 sparse_fsm_error_o = 1'b 0;
Tests: T1 T2 T3
315
316 1/1 unique case (st)
Tests: T1 T2 T3
317
318 // In Idle state, the FSM checks if the software (or upper FSM) initiates
319 // the hash process. If `start_i` is asserted (assume it is pulse), FSM
320 // starts to push the data into the keccak round logic. Depending on the
321 // hashing mode, FSM may push additional prefex in front of the actual
322 // message. It means, the message could be back-pressured until the first
323 // prefix is processed.
324 StPadIdle: begin
325 1/1 if (start_i) begin
Tests: T1 T2 T3
326 // If cSHAKE, move to Prefix state
327 1/1 if (mode_eq_cshake) begin
Tests: T1 T2 T3
328 1/1 st_d = StPrefix;
Tests: T1 T2 T3
329 end else begin
330 1/1 st_d = StMessage;
Tests: T8 T18 T38
331 end
332 end else begin
333 1/1 st_d = StPadIdle;
Tests: T1 T2 T3
334 end
335 end
336
337 // At Prefix state, FSM pushes
338 // `bytepad(encode_string(N)||encode_string(S), 168or136)`. The software
339 // already prepared `encode_string(N) || encode_string(S)` in the regs.
340 // So, the FSM adds 2Byte in front of ns_data_i, which is an encoded
341 // block size (see `encoded_bytepad` below)
342 // After pushing the prefix, it initiates the hash process and move to
343 // Message state.
344 StPrefix: begin
345 1/1 sel_mux = MuxPrefix;
Tests: T1 T2 T3
346
347 1/1 if (sent_blocksize) begin
Tests: T1 T2 T3
348 1/1 st_d = StPrefixWait;
Tests: T1 T2 T3
349
350 1/1 keccak_run_o = 1'b 1;
Tests: T1 T2 T3
351 1/1 fsm_keccak_valid = 1'b 0;
Tests: T1 T2 T3
352 1/1 clr_sentmsg = 1'b 1;
Tests: T1 T2 T3
353 end else begin
354 1/1 st_d = StPrefix;
Tests: T1 T2 T3
355
356 1/1 fsm_keccak_valid = 1'b 1;
Tests: T1 T2 T3
357 end
358 end
359
360 StPrefixWait: begin
361 1/1 sel_mux = MuxPrefix;
Tests: T1 T2 T3
362
363 1/1 if (keccak_complete_i) begin
Tests: T1 T2 T3
364 1/1 st_d = StMessage;
Tests: T1 T2 T3
365 end else begin
366 1/1 st_d = StPrefixWait;
Tests: T1 T2 T3
367 end
368 end
369
370 // Message state pushes the incoming message into keccak round logic.
371 // It forwards the message while counting the data and if it reaches
372 // the block size, it triggers the keccak round to run. If `process` is
373 // set, it moves to Pad state.
374 StMessage: begin
375 1/1 sel_mux = MuxFifo;
Tests: T1 T2 T3
376
377 1/1 if (msg_valid_i && msg_partial) begin
Tests: T1 T2 T3
378 1/1 st_d = StMessage;
Tests: T1 T2 T8
379
380 1/1 en_msgbuf = 1'b 1;
Tests: T1 T2 T8
381 1/1 end else if (sent_blocksize) begin
Tests: T1 T2 T3
382 // Check block completion first even process is set.
383 1/1 st_d = StMessageWait;
Tests: T1 T2 T3
384
385 1/1 keccak_run_o = 1'b 1;
Tests: T1 T2 T3
386 1/1 clr_sentmsg = 1'b 1;
Tests: T1 T2 T3
387 1/1 hold_msg = 1'b 1;
Tests: T1 T2 T3
388 1/1 end else if (process_latched || process_i) begin
Tests: T1 T2 T3
389 1/1 st_d = StPad;
Tests: T1 T2 T3
390
391 // Not asserting the msg_ready_o
392 1/1 hold_msg = 1'b 1;
Tests: T1 T2 T3
393 end else begin
394 1/1 st_d = StMessage;
Tests: T1 T2 T3
395
396 end
397 end
398
399 StMessageWait: begin
400 1/1 hold_msg = 1'b 1;
Tests: T1 T2 T3
401
402 1/1 if (keccak_complete_i) begin
Tests: T1 T2 T3
403 1/1 st_d = StMessage;
Tests: T1 T2 T3
404 end else begin
405 1/1 st_d = StMessageWait;
Tests: T1 T2 T3
406 end
407 end
408
409 // Pad state just pushes the ending suffix. Depending on the mode, the
410 // padding value is unique. SHA3 adds 2'b10, SHAKE adds 4'b1111, and
411 // cSHAKE adds 2'b 00. Refer `function_pad`. The signal has one more bit
412 // defined to accomodate first 1 bit of `pad10*1()` function.
413 StPad: begin
414 1/1 sel_mux = MuxFuncPad;
Tests: T1 T2 T3
415
416 1/1 fsm_keccak_valid = 1'b 1;
Tests: T1 T2 T3
417
418 1/1 if (keccak_ack && end_of_block) begin
Tests: T1 T2 T3
419 // If padding is the last block, don't have to move to StPad01, just
420 // run Keccak and complete
421 1/1 st_d = StPadRun;
Tests: T38 T4 T44
422
423 // always clear the latched msgbuf
424 1/1 clr_msgbuf = 1'b 1;
Tests: T38 T4 T44
425 1/1 clr_sentmsg = 1'b 1;
Tests: T38 T4 T44
426 1/1 end else if (keccak_ack) begin
Tests: T1 T2 T3
427 1/1 st_d = StPad01;
Tests: T1 T2 T3
428 1/1 clr_msgbuf = 1'b 1;
Tests: T1 T2 T3
429 end else begin
430 0/1 ==> st_d = StPad;
431 end
432 end
433
434 StPadRun: begin
435 1/1 st_d = StPadFlush;
Tests: T38 T4 T44
436
437 1/1 keccak_run_o = 1'b 1;
Tests: T38 T4 T44
438 1/1 clr_sentmsg = 1'b 1;
Tests: T38 T4 T44
439 end
440
441 // Pad01 pushes the end bit of pad10*1() function. As keccak accepts byte
442 // size only, StPad always pushes partial (5bits). So at this state, it
443 // pushes rest of 3bits. If the data pushed in StPad is the last byte of
444 // the block, then Pad01 pushes to the same byte, if not, it first
445 // zero-fill the block then pad 1 to the end.
446 StPad01: begin
447 1/1 sel_mux = MuxZeroEnd;
Tests: T1 T2 T3
448
449 // There's no chance StPad01 can be a start of the block. So can be
450 // discard that the sent_blocksize is set at the beginning.
451 1/1 if (sent_blocksize) begin
Tests: T1 T2 T3
452 1/1 st_d = StPadFlush;
Tests: T1 T2 T3
453
454 1/1 fsm_keccak_valid = 1'b 0;
Tests: T1 T2 T3
455 1/1 keccak_run_o = 1'b 1;
Tests: T1 T2 T3
456 1/1 clr_sentmsg = 1'b 1;
Tests: T1 T2 T3
457 end else begin
458 1/1 st_d = StPad01;
Tests: T1 T2 T3
459
460 1/1 fsm_keccak_valid = 1'b 1;
Tests: T1 T2 T3
461 end
462 end
463
464 StPadFlush: begin
465 // Wait completion from keccak_round or wait SW indicator.
466 1/1 clr_sentmsg = 1'b 1;
Tests: T1 T2 T3
467 1/1 clr_msgbuf = 1'b 1;
Tests: T1 T2 T3
468
469 1/1 if (keccak_complete_i) begin
Tests: T1 T2 T3
470 1/1 st_d = StPadIdle;
Tests: T1 T2 T3
471
472 1/1 absorbed_d = prim_mubi_pkg::MuBi4True;
Tests: T1 T2 T3
473 end else begin
474 1/1 st_d = StPadFlush;
Tests: T1 T2 T3
475 end
476 end
477
478 StTerminalError: begin
479 // this state is terminal
480 1/1 st_d = st;
Tests: T9 T10 T11
481 1/1 sparse_fsm_error_o = 1'b 1;
Tests: T9 T10 T11
482 end
483
484 default: begin
485 // this state is terminal
486 st_d = StTerminalError;
487 sparse_fsm_error_o = 1'b 1;
488 end
489 endcase
490
491 // SEC_CM: FSM.GLOBAL_ESC, FSM.LOCAL_ESC
492 // Unconditionally jump into the terminal error state
493 // if the life cycle controller triggers an escalation.
494 1/1 if (lc_ctrl_pkg::lc_tx_test_true_loose(lc_escalate_en_i)) begin
Tests: T1 T2 T3
495 1/1 st_d = StTerminalError;
Tests: T9 T10 T11
496 end
MISSING_ELSE
497 end
498
499 //////////////
500 // Datapath //
501 //////////////
502
503 // `encode_bytepad` represents the first two bytes of bytepad()
504 // It depends on the block size. We can reuse KeccakRate
505 // 10000000 || 00010101 // 168
506 // 10000000 || 00010001 // 136
507 logic [15:0] encode_bytepad;
508
509 1/1 assign encode_bytepad = encode_bytepad_len(strength_i);
Tests: T1 T2 T3
510
511 // Prefix size ==============================================================
512 // Prefix represents bytepad(encode_string(N) || encode_string(S), 168 or 136)
513 // encode_string(N) || encode_string(S) is prepared by the software and given
514 // through `ns_data_i`. The first part of bytepad is determined by the
515 // `strength_i` and stored into `encode_bytepad`.
516
517 // It is assumed that the prefix always smaller than the block size.
518 logic [PrefixSize*8-1:0] prefix;
519
520 1/1 assign prefix = {ns_data_i, encode_bytepad};
Tests: T1 T2 T3
521
522 logic [MsgWidth-1:0] prefix_sliced;
523 logic [MsgWidth-1:0] prefix_data [Share];
524
525 prim_slicer #(
526 .InW (PrefixSize*8),
527 .IndexW(KeccakMsgAddrW),
528 .OutW(MsgWidth)
529 ) u_prefix_slicer (
530 .sel_i (prefix_index),
531 .data_i (prefix),
532 .data_o (prefix_sliced)
533 );
534
535 if (EnMasking) begin : gen_prefix_masked
536 // If Masking is enabled, prefix is two share.
537 assign prefix_data[0] = '0;
538 1/1 assign prefix_data[1] = prefix_sliced;
Tests: T1 T2 T3
539 end else begin : gen_prefix_unmasked
540 // If Unmasked, only one share exists.
541 assign prefix_data[0] = prefix_sliced;
542 end
543
544 // ==========================================================================
545 // function_pad is the unique value padded at the end of the message based on
546 // the function among SHA3, SHAKE, cSHAKE. The standard mentioned that SHA3
547 // pads `01` , SHAKE pads `1111`, and cSHAKE pads `00`.
548 //
549 // Then pad10*1() function follows. It adds `1` first then fill 0 until it
550 // reaches the block size -1, then adds `1`.
551 //
552 // It means always `1` is followed by the function pad.
553 logic [4:0] funcpad;
554
555 logic [MsgWidth-1:0] funcpad_data [Share];
556
557 always_comb begin
558 1/1 unique case (mode_i)
Tests: T1 T2 T3
559 1/1 Sha3: funcpad = 5'b 00110;
Tests: T1 T2 T3
560 1/1 Shake: funcpad = 5'b 11111;
Tests: T39 T8 T18
561 1/1 CShake: funcpad = 5'b 00100;
Tests: T1 T2 T3
562
563 default: begin
564 // Just create non-padding but pad10*1 only
565 funcpad = 5'b 00001;
566 end
567 endcase
568 end
569
570 // ==========================================================================
571 // `zero_with_endbit` contains all zero unless the message is for the last
572 // MsgWidth beat in the block. If it is the end of the block, the last bit
573 // will be set to complete pad10*1() functionality.
574 logic [MsgWidth-1:0] zero_with_endbit [Share];
575
576 if (EnMasking) begin : gen_zeroend_masked
577 assign zero_with_endbit[0] = '0;
578 1/1 assign zero_with_endbit[1][MsgWidth-1] = end_of_block;
Tests: T1 T2 T3
579 assign zero_with_endbit[1][MsgWidth-2:0] = '0;
580 end else begin : gen_zeroend_unmasked
581 assign zero_with_endbit[0][MsgWidth-1] = end_of_block;
582 assign zero_with_endbit[0][MsgWidth-2:0] = '0;
583 end
584
585 // ==========================================================================
586 // Data mux for output data
587
588 1/1 assign keccak_addr_o = (sent_message < block_addr_limit) ? sent_message : '0;
Tests: T1 T2 T3
589
590 always_comb begin
591 1/1 unique case (sel_mux)
Tests: T1 T2 T3
592 1/1 MuxFifo: keccak_data_o = msg_data_i;
Tests: T1 T2 T3
593 1/1 MuxPrefix: keccak_data_o = prefix_data;
Tests: T1 T2 T3
594 1/1 MuxFuncPad: keccak_data_o = funcpad_data;
Tests: T1 T2 T3
595 1/1 MuxZeroEnd: keccak_data_o = zero_with_endbit;
Tests: T1 T2 T3
596
597 // MuxNone
598 default: keccak_data_o = '{default:'0};
599 endcase
600 end
601
602 always_comb begin
603 1/1 unique case (sel_mux)
Tests: T1 T2 T3
604 1/1 MuxFifo: keccak_valid_o = msg_valid_i & ~hold_msg & ~en_msgbuf;
Tests: T1 T2 T3
605 1/1 MuxPrefix: keccak_valid_o = fsm_keccak_valid;
Tests: T1 T2 T3
606 1/1 MuxFuncPad: keccak_valid_o = fsm_keccak_valid;
Tests: T1 T2 T3
607 1/1 MuxZeroEnd: keccak_valid_o = fsm_keccak_valid;
Tests: T1 T2 T3
608
609 // MuxNone
610 default: keccak_valid_o = 1'b 0;
611 endcase
612 end
613
614 always_comb begin
615 1/1 unique case (sel_mux)
Tests: T1 T2 T3
616 1/1 MuxFifo: msg_ready_o = en_msgbuf | (keccak_ready_i & ~hold_msg);
Tests: T1 T2 T3
617 1/1 MuxPrefix: msg_ready_o = 1'b 0;
Tests: T1 T2 T3
618 1/1 MuxFuncPad: msg_ready_o = 1'b 0;
Tests: T1 T2 T3
619 1/1 MuxZeroEnd: msg_ready_o = 1'b 0;
Tests: T1 T2 T3
620
621 // MuxNone
622 default: msg_ready_o = 1'b 0;
623 endcase
624 end
625
626 // prim_packer : packing to 64bit to update keccak storage
627 // two prim_packer in this module are used to pack the data received from
628 // upper layer (KMAC core) and also the 5bit padding bits.
629 // It is assumed that the message from upper layer could be partial at the
630 // end of the message. Then the 2 or 4bit padding is required. It can be
631 // handled by some custom logic or could be done by prim_packer.
632 // If packer is used, the MSG_FIFO doesn't have to have another prim_packer
633 // in front of the FIFO. This logic can handle the partial writes from the
634 // software.
635 //
636 // If a custom logic is implemented here, prim_packer is necessary in front
637 // of the FIFO, as this logic only appends at the end of the message when
638 // `process_i` is asserted. Also, in this case, even prim_packer is not
639 // needed, still 64bit registers to latch the partial write is required.
640 // If not, the logic has to delay the acceptance of the incoming write
641 // accesses. It may trigger the back-pressuring in some case which may result
642 // that the software(or upper layer) may not set process_i.
643 //
644 // For custom logic, it could be implemented by the 8 mux selection.
645 // for instance: (subject to be changed)
646 // unique case (sent_byte[2:0]) // generated from msg_strb_i
647 // 3'b 000: funcpad_merged = {end_of_block, 63'(function_pad) };
648 // 3'b 001: funcpad_merged = {end_of_block, 55'(function_pad), msg_data_i[ 7:0]};
649 // 3'b 010: funcpad_merged = {end_of_block, 47'(function_pad), msg_data_i[15:0]};
650 // 3'b 011: funcpad_merged = {end_of_block, 39'(function_pad), msg_data_i[23:0]};
651 // 3'b 100: funcpad_merged = {end_of_block, 31'(function_pad), msg_data_i[31:0]};
652 // 3'b 101: funcpad_merged = {end_of_block, 23'(function_pad), msg_data_i[39:0]};
653 // 3'b 110: funcpad_merged = {end_of_block, 15'(function_pad), msg_data_i[47:0]};
654 // 3'b 111: funcpad_merged = {end_of_block, 7'(function_pad), msg_data_i[55:0]};
655 // default: funcpad_merged = '0;
656 // endcase
657
658 // internal buffer to store partial write. It doesn't have to store last byte as it
659 // stores only when partial write.
660 logic [MsgWidth-8-1:0] msg_buf [Share];
661 logic [MsgStrbW-1-1:0] msg_strb;
662
663 always_ff @(posedge clk_i or negedge rst_ni) begin
664 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
665 1/1 msg_buf <= '{default:'0};
Tests: T1 T2 T3
666 1/1 msg_strb <= '0;
Tests: T1 T2 T3
667 1/1 end else if (en_msgbuf) begin
Tests: T1 T2 T3
668 1/1 for (int i = 0 ; i < Share ; i++) begin
Tests: T1 T2 T8
669 1/1 msg_buf[i] <= msg_data_i[i][0+:(MsgWidth-8)];
Tests: T1 T2 T8
670 end
671 1/1 msg_strb <= msg_strb_i[0+:(MsgStrbW-1)];
Tests: T1 T2 T8
672 1/1 end else if (clr_msgbuf) begin
Tests: T1 T2 T3
673 1/1 msg_buf <= '{default:'0};
Tests: T1 T2 T3
674 1/1 msg_strb <= '0;
Tests: T1 T2 T3
675 end
MISSING_ELSE
676 end
677
678 if (EnMasking) begin : gen_funcpad_data_masked
679 always_comb begin
680 1/1 unique case (msg_strb)
Tests: T1 T2 T3
681 7'b 000_0000: begin
682 1/1 funcpad_data[0] = '0;
Tests: T1 T2 T3
683 1/1 funcpad_data[1] = {end_of_block, 63'(funcpad) };
Tests: T1 T2 T3
684 end
685 7'b 000_0001: begin
686 1/1 funcpad_data[0] = {56'h0, msg_buf[0][ 7:0]};
Tests: T8 T38 T41
687 1/1 funcpad_data[1] = {end_of_block, 55'(funcpad), msg_buf[1][ 7:0]};
Tests: T8 T38 T41
688 end
689 7'b 000_0011: begin
690 1/1 funcpad_data[0] = {48'h0, msg_buf[0][15:0]};
Tests: T1 T8 T38
691 1/1 funcpad_data[1] = {end_of_block, 47'(funcpad), msg_buf[1][15:0]};
Tests: T1 T8 T38
692 end
693 7'b 000_0111: begin
694 1/1 funcpad_data[0] = {40'h0, msg_buf[0][23:0]};
Tests: T2 T18 T38
695 1/1 funcpad_data[1] = {end_of_block, 39'(funcpad), msg_buf[1][23:0]};
Tests: T2 T18 T38
696 end
697 7'b 000_1111: begin
698 1/1 funcpad_data[0] = {32'h0, msg_buf[0][31:0]};
Tests: T38 T41 T57
699 1/1 funcpad_data[1] = {end_of_block, 31'(funcpad), msg_buf[1][31:0]};
Tests: T38 T41 T57
700 end
701 7'b 001_1111: begin
702 1/1 funcpad_data[0] = {24'h0, msg_buf[0][39:0]};
Tests: T8 T18 T38
703 1/1 funcpad_data[1] = {end_of_block, 23'(funcpad), msg_buf[1][39:0]};
Tests: T8 T18 T38
704 end
705 7'b 011_1111: begin
706 1/1 funcpad_data[0] = {16'h0, msg_buf[0][47:0]};
Tests: T1 T18 T38
707 1/1 funcpad_data[1] = {end_of_block, 15'(funcpad), msg_buf[1][47:0]};
Tests: T1 T18 T38
708 end
709 7'b 111_1111: begin
710 1/1 funcpad_data[0] = { 8'h0, msg_buf[0][55:0]};
Tests: T2 T8 T38
711 1/1 funcpad_data[1] = {end_of_block, 7'(funcpad), msg_buf[1][55:0]};
Tests: T2 T8 T38
712 end
713
714 default: funcpad_data = '{default:'0};
715 endcase
716 end
717 end else begin : gen_funcpad_data_unmasked
718 always_comb begin
719 unique case (msg_strb)
720 7'b 000_0000: funcpad_data[0] = {end_of_block, 63'(funcpad) };
721 7'b 000_0001: funcpad_data[0] = {end_of_block, 55'(funcpad), msg_buf[0][ 7:0]};
722 7'b 000_0011: funcpad_data[0] = {end_of_block, 47'(funcpad), msg_buf[0][15:0]};
723 7'b 000_0111: funcpad_data[0] = {end_of_block, 39'(funcpad), msg_buf[0][23:0]};
724 7'b 000_1111: funcpad_data[0] = {end_of_block, 31'(funcpad), msg_buf[0][31:0]};
725 7'b 001_1111: funcpad_data[0] = {end_of_block, 23'(funcpad), msg_buf[0][39:0]};
726 7'b 011_1111: funcpad_data[0] = {end_of_block, 15'(funcpad), msg_buf[0][47:0]};
727 7'b 111_1111: funcpad_data[0] = {end_of_block, 7'(funcpad), msg_buf[0][55:0]};
728
729 default: funcpad_data = '{default:'0};
730 endcase
731 end
732 end
733
734 ////////////////
735 // Assertions //
736 ////////////////
737
738 // Prefix size is smaller than the smallest Keccak Block Size, which is 72 bytes.
739 `ASSERT_INIT(PrefixLessThanBlock_A, PrefixSize/8 < KeccakRate[4])
740
741 // Some part of datapath in sha3pad assumes Data width as 64bit.
742 // If data width need to be changed, funcpad_data part should be changed too.
743 // Also, The blocksize shall be divided by MsgWidth, which means, MsgWidth
744 // can be {16, 32, 64} even funcpad_data mux is fully flexible.
745 `ASSERT_INIT(MsgWidthidth_A, MsgWidth == 64)
746
747 // Assume pulse signals: start, process, done
748 `ASSUME(StartPulse_A, start_i |=> !start_i)
749 `ASSUME(ProcessPulse_A, process_i |=> !process_i)
750 `ASSUME(DonePulse_A,
751 prim_mubi_pkg::mubi4_test_true_strict(done_i) |=>
752 prim_mubi_pkg::mubi4_test_false_strict(done_i))
753
754 // ASSERT output pulse signals: absorbed_o, keccak_run_o
755 `ASSERT(AbsorbedPulse_A,
756 prim_mubi_pkg::mubi4_test_true_strict(absorbed_o) |=>
757 prim_mubi_pkg::mubi4_test_false_strict(absorbed_o))
758 `ASSERT(KeccakRunPulse_A, keccak_run_o |=> !keccak_run_o)
759
760 // start_i, done_i, process_i cannot set high at the same time
761 `ASSUME(StartProcessDoneMutex_a,
762 $onehot0({
763 start_i,
764 process_i,
765 prim_mubi_pkg::mubi4_test_true_loose(done_i)
766 }))
767
768 // Sequence, start_i --> process_i --> absorbed_o --> done_i
769 //`ASSUME(Sequence_a, start_i ##[1:$] process_i ##[1:$] ##[1:$] absorbed_o ##[1:$] done_i)
770
771 `ifndef SYNTHESIS
772 // Process only asserts after start and all message are fed.
773 // These valid signals are qualifier of FPV to trigger the control signal
774 // It is a little bit hard to specify these criteria in SVA property so creating
775 // qualifiers in RTL form is easier.
776 logic start_valid, process_valid, absorb_valid, done_valid;
777
778 always_ff @(posedge clk_i or negedge rst_ni) begin
779 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
780 1/1 start_valid <= 1'b 1;
Tests: T1 T2 T3
781 1/1 end else if (start_i) begin
Tests: T1 T2 T3
782 1/1 start_valid <= 1'b 0;
Tests: T1 T2 T3
783 1/1 end else if (prim_mubi_pkg::mubi4_test_true_strict(done_i)) begin
Tests: T1 T2 T3
784 1/1 start_valid <= 1'b 1;
Tests: T1 T2 T3
785 end
MISSING_ELSE
786 end
787 always_ff @(posedge clk_i or negedge rst_ni) begin
788 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
789 1/1 process_valid <= 1'b 0;
Tests: T1 T2 T3
790 1/1 end else if (start_i) begin
Tests: T1 T2 T3
791 1/1 process_valid <= 1'b 1;
Tests: T1 T2 T3
792 1/1 end else if (process_i) begin
Tests: T1 T2 T3
793 1/1 process_valid <= 1'b 0;
Tests: T1 T2 T3
794 end
MISSING_ELSE
795 end
796
797 always_ff @(posedge clk_i or negedge rst_ni) begin
798 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
799 1/1 done_valid <= 1'b 0;
Tests: T1 T2 T3
800 1/1 end else if (prim_mubi_pkg::mubi4_test_true_strict(absorbed_o)) begin
Tests: T1 T2 T3
801 1/1 done_valid <= 1'b 1;
Tests: T1 T2 T3
802 1/1 end else if (prim_mubi_pkg::mubi4_test_true_strict(done_i)) begin
Tests: T1 T2 T3
803 1/1 done_valid <= 1'b 0;
Tests: T1 T2 T3
804 end
MISSING_ELSE
Cond Coverage for Module :
sha3pad
| Total | Covered | Percent |
|---|
| Conditions | 43 | 38 | 88.37 |
| Logical | 43 | 38 | 88.37 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 209
EXPRESSION (keccak_valid_o & keccak_ready_i)
-------1------ -------2------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Not Covered | |
| 1 | 1 | Covered | T1,T2,T3 |
LINE 213
EXPRESSION ((sent_message < block_addr_limit) ? sent_message : '0)
----------------1----------------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 236
EXPRESSION ((mode_i == CShake) ? 1'b1 : 1'b0)
---------1--------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 236
SUB-EXPRESSION (mode_i == CShake)
---------1--------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 242
EXPRESSION ((sent_message == block_addr_limit) ? 1'b1 : 1'b0)
-----------------1----------------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 242
SUB-EXPRESSION (sent_message == block_addr_limit)
-----------------1----------------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 247
EXPRESSION (keccak_valid_o & keccak_ready_i)
-------1------ -------2------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Not Covered | |
| 1 | 1 | Covered | T1,T2,T3 |
LINE 257
EXPRESSION ((&msg_strb_i) != 1'b1)
-----------1-----------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 286
EXPRESSION (((sent_message + 1'b1) == block_addr_limit) ? 1'b1 : 1'b0)
---------------------1---------------------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 286
SUB-EXPRESSION ((sent_message + 1'b1) == block_addr_limit)
---------------------1---------------------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 377
EXPRESSION (msg_valid_i && msg_partial)
-----1----- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T2,T8 |
LINE 388
EXPRESSION (process_latched || process_i)
-------1------- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T38,T4,T44 |
LINE 418
EXPRESSION (keccak_ack && end_of_block)
-----1---- ------2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Not Covered | |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T38,T4,T44 |
LINE 588
EXPRESSION ((sent_message < block_addr_limit) ? sent_message : '0)
----------------1----------------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 604
EXPRESSION (msg_valid_i & ((~hold_msg)) & ((~en_msgbuf)))
-----1----- ------2------ -------3------
| -1- | -2- | -3- | Status | Tests |
|---|
| 0 | 1 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | 1 | Covered | T4,T12,T13 |
| 1 | 1 | 0 | Covered | T1,T2,T8 |
| 1 | 1 | 1 | Covered | T1,T2,T3 |
LINE 616
EXPRESSION (en_msgbuf | (keccak_ready_i & ((~hold_msg))))
----1---- ----------------2---------------
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Not Covered | |
LINE 616
SUB-EXPRESSION (keccak_ready_i & ((~hold_msg)))
-------1------ ------2------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Not Covered | |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T2,T3 |
FSM Coverage for Module :
sha3pad
Summary for FSM :: st
| Total | Covered | Percent | |
| States |
10 |
10 |
100.00 |
(Not included in score) |
| Transitions |
21 |
18 |
85.71 |
|
| Sequences |
0 |
0 |
|
|
State, Transition and Sequence Details for FSM :: st
| states | Line No. | Covered | Tests |
| StMessage |
330 |
Covered |
T1,T2,T3 |
| StMessageWait |
383 |
Covered |
T1,T2,T3 |
| StPad |
389 |
Covered |
T1,T2,T3 |
| StPad01 |
427 |
Covered |
T1,T2,T3 |
| StPadFlush |
435 |
Covered |
T1,T2,T3 |
| StPadIdle |
333 |
Covered |
T1,T2,T3 |
| StPadRun |
421 |
Covered |
T38,T4,T44 |
| StPrefix |
328 |
Covered |
T1,T2,T3 |
| StPrefixWait |
348 |
Covered |
T1,T2,T3 |
| StTerminalError |
495 |
Covered |
T9,T10,T11 |
| transitions | Line No. | Covered | Tests |
| StMessage->StMessageWait |
383 |
Covered |
T1,T2,T3 |
| StMessage->StPad |
389 |
Covered |
T1,T2,T3 |
| StMessage->StTerminalError |
495 |
Covered |
T35,T83,T88 |
| StMessageWait->StMessage |
403 |
Covered |
T1,T2,T3 |
| StMessageWait->StTerminalError |
495 |
Covered |
T9,T50,T55 |
| StPad->StPad01 |
427 |
Covered |
T1,T2,T3 |
| StPad->StPadRun |
421 |
Covered |
T38,T4,T44 |
| StPad->StTerminalError |
495 |
Not Covered |
|
| StPad01->StPadFlush |
452 |
Covered |
T1,T2,T3 |
| StPad01->StTerminalError |
495 |
Not Covered |
|
| StPadFlush->StPadIdle |
470 |
Covered |
T1,T2,T3 |
| StPadFlush->StTerminalError |
495 |
Covered |
T54 |
| StPadIdle->StMessage |
330 |
Covered |
T8,T18,T38 |
| StPadIdle->StPrefix |
328 |
Covered |
T1,T2,T3 |
| StPadIdle->StTerminalError |
495 |
Covered |
T10,T11,T34 |
| StPadRun->StPadFlush |
435 |
Covered |
T38,T4,T44 |
| StPadRun->StTerminalError |
495 |
Not Covered |
|
| StPrefix->StPrefixWait |
348 |
Covered |
T1,T2,T3 |
| StPrefix->StTerminalError |
495 |
Covered |
T89,T90 |
| StPrefixWait->StMessage |
364 |
Covered |
T1,T2,T3 |
| StPrefixWait->StTerminalError |
495 |
Covered |
T36,T30,T31 |
Branch Coverage for Module :
sha3pad
| Line No. | Total | Covered | Percent |
| Branches |
|
93 |
89 |
95.70 |
| TERNARY |
213 |
2 |
2 |
100.00 |
| TERNARY |
236 |
2 |
2 |
100.00 |
| TERNARY |
242 |
2 |
2 |
100.00 |
| TERNARY |
286 |
2 |
2 |
100.00 |
| TERNARY |
588 |
2 |
2 |
100.00 |
| CASE |
157 |
6 |
5 |
83.33 |
| IF |
267 |
4 |
4 |
100.00 |
| IF |
279 |
2 |
2 |
100.00 |
| IF |
293 |
2 |
2 |
100.00 |
| CASE |
316 |
23 |
22 |
95.65 |
| IF |
494 |
2 |
2 |
100.00 |
| CASE |
558 |
4 |
3 |
75.00 |
| CASE |
591 |
5 |
5 |
100.00 |
| CASE |
603 |
5 |
5 |
100.00 |
| CASE |
615 |
5 |
5 |
100.00 |
| IF |
664 |
4 |
4 |
100.00 |
| IF |
779 |
4 |
4 |
100.00 |
| IF |
788 |
4 |
4 |
100.00 |
| IF |
798 |
4 |
4 |
100.00 |
| CASE |
680 |
9 |
8 |
88.89 |
213 assign prefix_index = (sent_message < block_addr_limit) ? sent_message : '0;
-1-
==>
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
236 assign mode_eq_cshake = (mode_i == CShake) ? 1'b 1 : 1'b 0;
-1-
==>
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
242 assign sent_blocksize = (sent_message == block_addr_limit) ? 1'b 1 : 1'b 0;
-1-
==>
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
286 assign end_of_block = ((sent_message + 1'b1) == block_addr_limit) ? 1'b 1 : 1'b 0;
-1-
==>
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
588 assign keccak_addr_o = (sent_message < block_addr_limit) ? sent_message : '0;
-1-
==>
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
157 unique case (strength_i)
-1-
158 L128: block_addr_limit = KeccakCountW'(KeccakRate[L128]);
==>
159 L224: block_addr_limit = KeccakCountW'(KeccakRate[L224]);
==>
160 L256: block_addr_limit = KeccakCountW'(KeccakRate[L256]);
==>
161 L384: block_addr_limit = KeccakCountW'(KeccakRate[L384]);
==>
162 L512: block_addr_limit = KeccakCountW'(KeccakRate[L512]);
==>
163
164 default: block_addr_limit = '0;
==>
Branches:
| -1- | Status | Tests |
| L128 |
Covered |
T1,T2,T3 |
| L224 |
Covered |
T41,T57,T47 |
| L256 |
Covered |
T1,T2,T3 |
| L384 |
Covered |
T3,T8,T4 |
| L512 |
Covered |
T38,T41,T57 |
| default |
Not Covered |
|
267 if (!rst_ni) begin
-1-
268 process_latched <= 1'b 0;
==>
269 end else if (process_i) begin
-2-
270 process_latched <= 1'b 1;
==>
271 end else if (prim_mubi_pkg::mubi4_test_true_strict(done_i)) begin
-3-
272 process_latched <= 1'b0;
==>
273 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | Status | Tests |
| 1 |
- |
- |
Covered |
T1,T2,T3 |
| 0 |
1 |
- |
Covered |
T1,T2,T3 |
| 0 |
0 |
1 |
Covered |
T1,T2,T3 |
| 0 |
0 |
0 |
Covered |
T1,T2,T3 |
279 `PRIM_FLOP_SPARSE_FSM(u_state_regs, st_d, st, pad_st_e, StPadIdle)
-1-
==>
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
293 if (!rst_ni) absorbed_o <= prim_mubi_pkg::MuBi4False;
-1-
==>
294 else absorbed_o <= absorbed_d;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
316 unique case (st)
-1-
317
318 // In Idle state, the FSM checks if the software (or upper FSM) initiates
319 // the hash process. If `start_i` is asserted (assume it is pulse), FSM
320 // starts to push the data into the keccak round logic. Depending on the
321 // hashing mode, FSM may push additional prefex in front of the actual
322 // message. It means, the message could be back-pressured until the first
323 // prefix is processed.
324 StPadIdle: begin
325 if (start_i) begin
-2-
326 // If cSHAKE, move to Prefix state
327 if (mode_eq_cshake) begin
-3-
328 st_d = StPrefix;
==>
329 end else begin
330 st_d = StMessage;
==>
331 end
332 end else begin
333 st_d = StPadIdle;
==>
334 end
335 end
336
337 // At Prefix state, FSM pushes
338 // `bytepad(encode_string(N)||encode_string(S), 168or136)`. The software
339 // already prepared `encode_string(N) || encode_string(S)` in the regs.
340 // So, the FSM adds 2Byte in front of ns_data_i, which is an encoded
341 // block size (see `encoded_bytepad` below)
342 // After pushing the prefix, it initiates the hash process and move to
343 // Message state.
344 StPrefix: begin
345 sel_mux = MuxPrefix;
346
347 if (sent_blocksize) begin
-4-
348 st_d = StPrefixWait;
==>
349
350 keccak_run_o = 1'b 1;
351 fsm_keccak_valid = 1'b 0;
352 clr_sentmsg = 1'b 1;
353 end else begin
354 st_d = StPrefix;
==>
355
356 fsm_keccak_valid = 1'b 1;
357 end
358 end
359
360 StPrefixWait: begin
361 sel_mux = MuxPrefix;
362
363 if (keccak_complete_i) begin
-5-
364 st_d = StMessage;
==>
365 end else begin
366 st_d = StPrefixWait;
==>
367 end
368 end
369
370 // Message state pushes the incoming message into keccak round logic.
371 // It forwards the message while counting the data and if it reaches
372 // the block size, it triggers the keccak round to run. If `process` is
373 // set, it moves to Pad state.
374 StMessage: begin
375 sel_mux = MuxFifo;
376
377 if (msg_valid_i && msg_partial) begin
-6-
378 st_d = StMessage;
==>
379
380 en_msgbuf = 1'b 1;
381 end else if (sent_blocksize) begin
-7-
382 // Check block completion first even process is set.
383 st_d = StMessageWait;
==>
384
385 keccak_run_o = 1'b 1;
386 clr_sentmsg = 1'b 1;
387 hold_msg = 1'b 1;
388 end else if (process_latched || process_i) begin
-8-
389 st_d = StPad;
==>
390
391 // Not asserting the msg_ready_o
392 hold_msg = 1'b 1;
393 end else begin
394 st_d = StMessage;
==>
395
396 end
397 end
398
399 StMessageWait: begin
400 hold_msg = 1'b 1;
401
402 if (keccak_complete_i) begin
-9-
403 st_d = StMessage;
==>
404 end else begin
405 st_d = StMessageWait;
==>
406 end
407 end
408
409 // Pad state just pushes the ending suffix. Depending on the mode, the
410 // padding value is unique. SHA3 adds 2'b10, SHAKE adds 4'b1111, and
411 // cSHAKE adds 2'b 00. Refer `function_pad`. The signal has one more bit
412 // defined to accomodate first 1 bit of `pad10*1()` function.
413 StPad: begin
414 sel_mux = MuxFuncPad;
415
416 fsm_keccak_valid = 1'b 1;
417
418 if (keccak_ack && end_of_block) begin
-10-
419 // If padding is the last block, don't have to move to StPad01, just
420 // run Keccak and complete
421 st_d = StPadRun;
==>
422
423 // always clear the latched msgbuf
424 clr_msgbuf = 1'b 1;
425 clr_sentmsg = 1'b 1;
426 end else if (keccak_ack) begin
-11-
427 st_d = StPad01;
==>
428 clr_msgbuf = 1'b 1;
429 end else begin
430 st_d = StPad;
==>
431 end
432 end
433
434 StPadRun: begin
435 st_d = StPadFlush;
==>
436
437 keccak_run_o = 1'b 1;
438 clr_sentmsg = 1'b 1;
439 end
440
441 // Pad01 pushes the end bit of pad10*1() function. As keccak accepts byte
442 // size only, StPad always pushes partial (5bits). So at this state, it
443 // pushes rest of 3bits. If the data pushed in StPad is the last byte of
444 // the block, then Pad01 pushes to the same byte, if not, it first
445 // zero-fill the block then pad 1 to the end.
446 StPad01: begin
447 sel_mux = MuxZeroEnd;
448
449 // There's no chance StPad01 can be a start of the block. So can be
450 // discard that the sent_blocksize is set at the beginning.
451 if (sent_blocksize) begin
-12-
452 st_d = StPadFlush;
==>
453
454 fsm_keccak_valid = 1'b 0;
455 keccak_run_o = 1'b 1;
456 clr_sentmsg = 1'b 1;
457 end else begin
458 st_d = StPad01;
==>
459
460 fsm_keccak_valid = 1'b 1;
461 end
462 end
463
464 StPadFlush: begin
465 // Wait completion from keccak_round or wait SW indicator.
466 clr_sentmsg = 1'b 1;
467 clr_msgbuf = 1'b 1;
468
469 if (keccak_complete_i) begin
-13-
470 st_d = StPadIdle;
==>
471
472 absorbed_d = prim_mubi_pkg::MuBi4True;
473 end else begin
474 st_d = StPadFlush;
==>
475 end
476 end
477
478 StTerminalError: begin
479 // this state is terminal
480 st_d = st;
==>
481 sparse_fsm_error_o = 1'b 1;
482 end
483
484 default: begin
485 // this state is terminal
486 st_d = StTerminalError;
==>
Branches:
| -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | -12- | -13- | Status | Tests |
| StPadIdle |
1 |
1 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StPadIdle |
1 |
0 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T8,T18,T38 |
| StPadIdle |
0 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StPrefix |
- |
- |
1 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StPrefix |
- |
- |
0 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StPrefixWait |
- |
- |
- |
1 |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StPrefixWait |
- |
- |
- |
0 |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StMessage |
- |
- |
- |
- |
1 |
- |
- |
- |
- |
- |
- |
- |
Covered |
T1,T2,T8 |
| StMessage |
- |
- |
- |
- |
0 |
1 |
- |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StMessage |
- |
- |
- |
- |
0 |
0 |
1 |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StMessage |
- |
- |
- |
- |
0 |
0 |
0 |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StMessageWait |
- |
- |
- |
- |
- |
- |
- |
1 |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StMessageWait |
- |
- |
- |
- |
- |
- |
- |
0 |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StPad |
- |
- |
- |
- |
- |
- |
- |
- |
1 |
- |
- |
- |
Covered |
T38,T4,T44 |
| StPad |
- |
- |
- |
- |
- |
- |
- |
- |
0 |
1 |
- |
- |
Covered |
T1,T2,T3 |
| StPad |
- |
- |
- |
- |
- |
- |
- |
- |
0 |
0 |
- |
- |
Not Covered |
|
| StPadRun |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T38,T4,T44 |
| StPad01 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
1 |
- |
Covered |
T1,T2,T3 |
| StPad01 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
0 |
- |
Covered |
T1,T2,T3 |
| StPadFlush |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
1 |
Covered |
T1,T2,T3 |
| StPadFlush |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
0 |
Covered |
T1,T2,T3 |
| StTerminalError |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T9,T10,T11 |
| default |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T10,T34,T37 |
494 if (lc_ctrl_pkg::lc_tx_test_true_loose(lc_escalate_en_i)) begin
-1-
495 st_d = StTerminalError;
==>
496 end
MISSING_ELSE
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T9,T10,T11 |
| 0 |
Covered |
T1,T2,T3 |
558 unique case (mode_i)
-1-
559 Sha3: funcpad = 5'b 00110;
==>
560 Shake: funcpad = 5'b 11111;
==>
561 CShake: funcpad = 5'b 00100;
==>
562
563 default: begin
564 // Just create non-padding but pad10*1 only
565 funcpad = 5'b 00001;
==>
Branches:
| -1- | Status | Tests |
| Sha3 |
Covered |
T1,T2,T3 |
| Shake |
Covered |
T39,T8,T18 |
| CShake |
Covered |
T1,T2,T3 |
| default |
Not Covered |
|
591 unique case (sel_mux)
-1-
592 MuxFifo: keccak_data_o = msg_data_i;
==>
593 MuxPrefix: keccak_data_o = prefix_data;
==>
594 MuxFuncPad: keccak_data_o = funcpad_data;
==>
595 MuxZeroEnd: keccak_data_o = zero_with_endbit;
==>
596
597 // MuxNone
598 default: keccak_data_o = '{default:'0};
==>
Branches:
| -1- | Status | Tests |
| MuxFifo |
Covered |
T1,T2,T3 |
| MuxPrefix |
Covered |
T1,T2,T3 |
| MuxFuncPad |
Covered |
T1,T2,T3 |
| MuxZeroEnd |
Covered |
T1,T2,T3 |
| default |
Covered |
T1,T2,T3 |
603 unique case (sel_mux)
-1-
604 MuxFifo: keccak_valid_o = msg_valid_i & ~hold_msg & ~en_msgbuf;
==>
605 MuxPrefix: keccak_valid_o = fsm_keccak_valid;
==>
606 MuxFuncPad: keccak_valid_o = fsm_keccak_valid;
==>
607 MuxZeroEnd: keccak_valid_o = fsm_keccak_valid;
==>
608
609 // MuxNone
610 default: keccak_valid_o = 1'b 0;
==>
Branches:
| -1- | Status | Tests |
| MuxFifo |
Covered |
T1,T2,T3 |
| MuxPrefix |
Covered |
T1,T2,T3 |
| MuxFuncPad |
Covered |
T1,T2,T3 |
| MuxZeroEnd |
Covered |
T1,T2,T3 |
| default |
Covered |
T1,T2,T3 |
615 unique case (sel_mux)
-1-
616 MuxFifo: msg_ready_o = en_msgbuf | (keccak_ready_i & ~hold_msg);
==>
617 MuxPrefix: msg_ready_o = 1'b 0;
==>
618 MuxFuncPad: msg_ready_o = 1'b 0;
==>
619 MuxZeroEnd: msg_ready_o = 1'b 0;
==>
620
621 // MuxNone
622 default: msg_ready_o = 1'b 0;
==>
Branches:
| -1- | Status | Tests |
| MuxFifo |
Covered |
T1,T2,T3 |
| MuxPrefix |
Covered |
T1,T2,T3 |
| MuxFuncPad |
Covered |
T1,T2,T3 |
| MuxZeroEnd |
Covered |
T1,T2,T3 |
| default |
Covered |
T1,T2,T3 |
664 if (!rst_ni) begin
-1-
665 msg_buf <= '{default:'0};
==>
666 msg_strb <= '0;
667 end else if (en_msgbuf) begin
-2-
668 for (int i = 0 ; i < Share ; i++) begin
==>
669 msg_buf[i] <= msg_data_i[i][0+:(MsgWidth-8)];
670 end
671 msg_strb <= msg_strb_i[0+:(MsgStrbW-1)];
672 end else if (clr_msgbuf) begin
-3-
673 msg_buf <= '{default:'0};
==>
674 msg_strb <= '0;
675 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | Status | Tests |
| 1 |
- |
- |
Covered |
T1,T2,T3 |
| 0 |
1 |
- |
Covered |
T1,T2,T8 |
| 0 |
0 |
1 |
Covered |
T1,T2,T3 |
| 0 |
0 |
0 |
Covered |
T1,T2,T3 |
779 if (!rst_ni) begin
-1-
780 start_valid <= 1'b 1;
==>
781 end else if (start_i) begin
-2-
782 start_valid <= 1'b 0;
==>
783 end else if (prim_mubi_pkg::mubi4_test_true_strict(done_i)) begin
-3-
784 start_valid <= 1'b 1;
==>
785 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | Status | Tests |
| 1 |
- |
- |
Covered |
T1,T2,T3 |
| 0 |
1 |
- |
Covered |
T1,T2,T3 |
| 0 |
0 |
1 |
Covered |
T1,T2,T3 |
| 0 |
0 |
0 |
Covered |
T1,T2,T3 |
788 if (!rst_ni) begin
-1-
789 process_valid <= 1'b 0;
==>
790 end else if (start_i) begin
-2-
791 process_valid <= 1'b 1;
==>
792 end else if (process_i) begin
-3-
793 process_valid <= 1'b 0;
==>
794 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | Status | Tests |
| 1 |
- |
- |
Covered |
T1,T2,T3 |
| 0 |
1 |
- |
Covered |
T1,T2,T3 |
| 0 |
0 |
1 |
Covered |
T1,T2,T3 |
| 0 |
0 |
0 |
Covered |
T1,T2,T3 |
798 if (!rst_ni) begin
-1-
799 done_valid <= 1'b 0;
==>
800 end else if (prim_mubi_pkg::mubi4_test_true_strict(absorbed_o)) begin
-2-
801 done_valid <= 1'b 1;
==>
802 end else if (prim_mubi_pkg::mubi4_test_true_strict(done_i)) begin
-3-
803 done_valid <= 1'b 0;
==>
804 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | Status | Tests |
| 1 |
- |
- |
Covered |
T1,T2,T3 |
| 0 |
1 |
- |
Covered |
T1,T2,T3 |
| 0 |
0 |
1 |
Covered |
T1,T2,T3 |
| 0 |
0 |
0 |
Covered |
T1,T2,T3 |
680 unique case (msg_strb)
-1-
681 7'b 000_0000: begin
682 funcpad_data[0] = '0;
==>
683 funcpad_data[1] = {end_of_block, 63'(funcpad) };
684 end
685 7'b 000_0001: begin
686 funcpad_data[0] = {56'h0, msg_buf[0][ 7:0]};
==>
687 funcpad_data[1] = {end_of_block, 55'(funcpad), msg_buf[1][ 7:0]};
688 end
689 7'b 000_0011: begin
690 funcpad_data[0] = {48'h0, msg_buf[0][15:0]};
==>
691 funcpad_data[1] = {end_of_block, 47'(funcpad), msg_buf[1][15:0]};
692 end
693 7'b 000_0111: begin
694 funcpad_data[0] = {40'h0, msg_buf[0][23:0]};
==>
695 funcpad_data[1] = {end_of_block, 39'(funcpad), msg_buf[1][23:0]};
696 end
697 7'b 000_1111: begin
698 funcpad_data[0] = {32'h0, msg_buf[0][31:0]};
==>
699 funcpad_data[1] = {end_of_block, 31'(funcpad), msg_buf[1][31:0]};
700 end
701 7'b 001_1111: begin
702 funcpad_data[0] = {24'h0, msg_buf[0][39:0]};
==>
703 funcpad_data[1] = {end_of_block, 23'(funcpad), msg_buf[1][39:0]};
704 end
705 7'b 011_1111: begin
706 funcpad_data[0] = {16'h0, msg_buf[0][47:0]};
==>
707 funcpad_data[1] = {end_of_block, 15'(funcpad), msg_buf[1][47:0]};
708 end
709 7'b 111_1111: begin
710 funcpad_data[0] = { 8'h0, msg_buf[0][55:0]};
==>
711 funcpad_data[1] = {end_of_block, 7'(funcpad), msg_buf[1][55:0]};
712 end
713
714 default: funcpad_data = '{default:'0};
==>
Branches:
| -1- | Status | Tests |
| 7'b0000000 |
Covered |
T1,T2,T3 |
| 7'b0000001 |
Covered |
T8,T38,T41 |
| 7'b0000011 |
Covered |
T1,T8,T38 |
| 7'b0000111 |
Covered |
T2,T18,T38 |
| 7'b0001111 |
Covered |
T38,T41,T57 |
| 7'b0011111 |
Covered |
T8,T18,T38 |
| 7'b0111111 |
Covered |
T1,T18,T38 |
| 7'b1111111 |
Covered |
T2,T8,T38 |
| default |
Not Covered |
|
Assert Coverage for Module :
sha3pad
Assertion Details
AbsorbedPulse_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
55181 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
3 |
0 |
0 |
| T4 |
160720 |
43 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
0 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
0 |
| T38 |
81290 |
73 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
125 |
0 |
0 |
| T47 |
0 |
92 |
0 |
0 |
| T57 |
0 |
100 |
0 |
0 |
AlwaysPartialMsgBuf_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
43280 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
0 |
0 |
0 |
| T4 |
160720 |
0 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
0 |
0 |
0 |
| T18 |
15599 |
3 |
0 |
0 |
| T38 |
81290 |
63 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
115 |
0 |
0 |
| T47 |
0 |
75 |
0 |
0 |
| T48 |
0 |
3 |
0 |
0 |
| T57 |
0 |
87 |
0 |
0 |
| T70 |
0 |
3 |
0 |
0 |
CompleteBlockWhenProcess_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
52708 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
3 |
0 |
0 |
| T4 |
160720 |
38 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
0 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
0 |
| T38 |
81290 |
64 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
125 |
0 |
0 |
| T47 |
0 |
92 |
0 |
0 |
| T57 |
0 |
100 |
0 |
0 |
DoneCondition_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
55178 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
3 |
0 |
0 |
| T4 |
160720 |
43 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
0 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
0 |
| T38 |
81290 |
73 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
125 |
0 |
0 |
| T47 |
0 |
92 |
0 |
0 |
| T57 |
0 |
100 |
0 |
0 |
DonePulse_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
55178 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
3 |
0 |
0 |
| T4 |
160720 |
43 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
0 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
0 |
| T38 |
81290 |
73 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
125 |
0 |
0 |
| T47 |
0 |
92 |
0 |
0 |
| T57 |
0 |
100 |
0 |
0 |
KeccakAddrInRange_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
13653552 |
0 |
0 |
| T1 |
2466 |
210 |
0 |
0 |
| T2 |
6031 |
210 |
0 |
0 |
| T3 |
17726 |
153 |
0 |
0 |
| T4 |
160720 |
3924 |
0 |
0 |
| T8 |
39865 |
854 |
0 |
0 |
| T9 |
6168 |
34 |
0 |
0 |
| T18 |
15599 |
363 |
0 |
0 |
| T38 |
81290 |
666 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
5692 |
0 |
0 |
| T57 |
0 |
4427 |
0 |
0 |
KeccakRunPulse_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
740832 |
0 |
0 |
| T1 |
2466 |
10 |
0 |
0 |
| T2 |
6031 |
10 |
0 |
0 |
| T3 |
17726 |
9 |
0 |
0 |
| T4 |
160720 |
204 |
0 |
0 |
| T8 |
39865 |
46 |
0 |
0 |
| T9 |
6168 |
2 |
0 |
0 |
| T18 |
15599 |
19 |
0 |
0 |
| T38 |
81290 |
74 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
309 |
0 |
0 |
| T57 |
0 |
235 |
0 |
0 |
MessageCondition_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
12397549 |
0 |
0 |
| T1 |
2466 |
91 |
0 |
0 |
| T2 |
6031 |
91 |
0 |
0 |
| T3 |
17726 |
51 |
0 |
0 |
| T4 |
160720 |
2640 |
0 |
0 |
| T8 |
39865 |
694 |
0 |
0 |
| T9 |
6168 |
17 |
0 |
0 |
| T18 |
15599 |
296 |
0 |
0 |
| T38 |
81290 |
360 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
2035 |
0 |
0 |
| T57 |
0 |
1567 |
0 |
0 |
ModeStableDuringOp_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
32882 |
0 |
0 |
| T1 |
2466 |
1 |
0 |
0 |
| T2 |
6031 |
1 |
0 |
0 |
| T3 |
17726 |
4 |
0 |
0 |
| T4 |
160720 |
194 |
0 |
0 |
| T8 |
39865 |
9 |
0 |
0 |
| T9 |
6168 |
1 |
0 |
0 |
| T18 |
15599 |
3 |
0 |
0 |
| T38 |
81290 |
0 |
0 |
0 |
| T39 |
1993 |
4 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
53 |
0 |
0 |
| T57 |
0 |
52 |
0 |
0 |
MsgReadyCondition_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
370112860 |
0 |
0 |
| T1 |
2466 |
341 |
0 |
0 |
| T2 |
6031 |
1581 |
0 |
0 |
| T3 |
17726 |
13595 |
0 |
0 |
| T4 |
160720 |
49237 |
0 |
0 |
| T8 |
39865 |
31091 |
0 |
0 |
| T9 |
6168 |
17 |
0 |
0 |
| T18 |
15599 |
3790 |
0 |
0 |
| T38 |
81290 |
25107 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
12393 |
0 |
0 |
| T57 |
0 |
3742 |
0 |
0 |
MsgWidthidth_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
672 |
672 |
0 |
0 |
| T1 |
1 |
1 |
0 |
0 |
| T2 |
1 |
1 |
0 |
0 |
| T3 |
1 |
1 |
0 |
0 |
| T4 |
1 |
1 |
0 |
0 |
| T8 |
1 |
1 |
0 |
0 |
| T9 |
1 |
1 |
0 |
0 |
| T18 |
1 |
1 |
0 |
0 |
| T38 |
1 |
1 |
0 |
0 |
| T39 |
1 |
1 |
0 |
0 |
| T40 |
1 |
1 |
0 |
0 |
NoPartialMsgFifo_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
12354269 |
0 |
0 |
| T1 |
2466 |
88 |
0 |
0 |
| T2 |
6031 |
88 |
0 |
0 |
| T3 |
17726 |
51 |
0 |
0 |
| T4 |
160720 |
2640 |
0 |
0 |
| T8 |
39865 |
687 |
0 |
0 |
| T9 |
6168 |
17 |
0 |
0 |
| T18 |
15599 |
293 |
0 |
0 |
| T38 |
81290 |
297 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
1920 |
0 |
0 |
| T57 |
0 |
1480 |
0 |
0 |
Pad01NotAttheEndOfBlock_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
53080 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
3 |
0 |
0 |
| T4 |
160720 |
40 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
0 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
0 |
| T38 |
81290 |
65 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
125 |
0 |
0 |
| T47 |
0 |
92 |
0 |
0 |
| T57 |
0 |
100 |
0 |
0 |
PartialEndOfMsg_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
43280 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
0 |
0 |
0 |
| T4 |
160720 |
0 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
0 |
0 |
0 |
| T18 |
15599 |
3 |
0 |
0 |
| T38 |
81290 |
63 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
115 |
0 |
0 |
| T47 |
0 |
75 |
0 |
0 |
| T48 |
0 |
3 |
0 |
0 |
| T57 |
0 |
87 |
0 |
0 |
| T70 |
0 |
3 |
0 |
0 |
PrefixLessThanBlock_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
672 |
672 |
0 |
0 |
| T1 |
1 |
1 |
0 |
0 |
| T2 |
1 |
1 |
0 |
0 |
| T3 |
1 |
1 |
0 |
0 |
| T4 |
1 |
1 |
0 |
0 |
| T8 |
1 |
1 |
0 |
0 |
| T9 |
1 |
1 |
0 |
0 |
| T18 |
1 |
1 |
0 |
0 |
| T38 |
1 |
1 |
0 |
0 |
| T39 |
1 |
1 |
0 |
0 |
| T40 |
1 |
1 |
0 |
0 |
ProcessCondition_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
55205 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
3 |
0 |
0 |
| T4 |
160720 |
43 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
0 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
0 |
| T38 |
81290 |
73 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
125 |
0 |
0 |
| T47 |
0 |
92 |
0 |
0 |
| T57 |
0 |
100 |
0 |
0 |
ProcessPulse_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
55205 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
3 |
0 |
0 |
| T4 |
160720 |
43 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
0 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
0 |
| T38 |
81290 |
73 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
125 |
0 |
0 |
| T47 |
0 |
92 |
0 |
0 |
| T57 |
0 |
100 |
0 |
0 |
StartCondition_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
55255 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
3 |
0 |
0 |
| T4 |
160720 |
43 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
1 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
0 |
| T38 |
81290 |
73 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
125 |
0 |
0 |
| T57 |
0 |
100 |
0 |
0 |
StartProcessDoneMutex_a
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
578396025 |
0 |
0 |
| T1 |
2466 |
2379 |
0 |
0 |
| T2 |
6031 |
5933 |
0 |
0 |
| T3 |
17726 |
17676 |
0 |
0 |
| T4 |
160720 |
160658 |
0 |
0 |
| T8 |
39865 |
39771 |
0 |
0 |
| T9 |
6168 |
6036 |
0 |
0 |
| T18 |
15599 |
15503 |
0 |
0 |
| T38 |
81290 |
81206 |
0 |
0 |
| T39 |
1993 |
1909 |
0 |
0 |
| T40 |
1068 |
971 |
0 |
0 |
StartPulse_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
55255 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
3 |
0 |
0 |
| T4 |
160720 |
43 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
1 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
0 |
| T38 |
81290 |
73 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
125 |
0 |
0 |
| T57 |
0 |
100 |
0 |
0 |
StrengthStableDuringOp_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
39176 |
0 |
0 |
| T1 |
2466 |
1 |
0 |
0 |
| T2 |
6031 |
1 |
0 |
0 |
| T3 |
17726 |
8 |
0 |
0 |
| T4 |
160720 |
208 |
0 |
0 |
| T8 |
39865 |
8 |
0 |
0 |
| T9 |
6168 |
3 |
0 |
0 |
| T18 |
15599 |
6 |
0 |
0 |
| T38 |
81290 |
2 |
0 |
0 |
| T39 |
1993 |
6 |
0 |
0 |
| T40 |
1068 |
1 |
0 |
0 |
u_state_regs_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
578396025 |
0 |
0 |
| T1 |
2466 |
2379 |
0 |
0 |
| T2 |
6031 |
5933 |
0 |
0 |
| T3 |
17726 |
17676 |
0 |
0 |
| T4 |
160720 |
160658 |
0 |
0 |
| T8 |
39865 |
39771 |
0 |
0 |
| T9 |
6168 |
6036 |
0 |
0 |
| T18 |
15599 |
15503 |
0 |
0 |
| T38 |
81290 |
81206 |
0 |
0 |
| T39 |
1993 |
1909 |
0 |
0 |
| T40 |
1068 |
971 |
0 |
0 |
Cover Directives for Properties: Details
StComplete_C
| Name | Attempts | Matches | Incomplete |
| Total |
578552030 |
5356321 |
0 |
| T1 |
2466 |
291 |
0 |
| T2 |
6031 |
291 |
0 |
| T3 |
17726 |
291 |
0 |
| T4 |
160720 |
4171 |
0 |
| T8 |
39865 |
679 |
0 |
| T9 |
6168 |
0 |
0 |
| T18 |
15599 |
485 |
0 |
| T38 |
81290 |
7081 |
0 |
| T39 |
1993 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
| T41 |
0 |
12125 |
0 |
| T47 |
0 |
8924 |
0 |
| T57 |
0 |
9700 |
0 |
StMessageFeed_C
| Name | Attempts | Matches | Incomplete |
| Total |
578552030 |
370818432 |
0 |
| T1 |
2466 |
348 |
0 |
| T2 |
6031 |
1588 |
0 |
| T3 |
17726 |
13601 |
0 |
| T4 |
160720 |
49398 |
0 |
| T8 |
39865 |
31132 |
0 |
| T9 |
6168 |
18 |
0 |
| T18 |
15599 |
3808 |
0 |
| T38 |
81290 |
25181 |
0 |
| T39 |
1993 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
| T41 |
0 |
12610 |
0 |
| T57 |
0 |
3910 |
0 |
StPadSendMsg_C
| Name | Attempts | Matches | Incomplete |
| Total |
578552030 |
582727 |
0 |
| T1 |
2466 |
56 |
0 |
| T2 |
6031 |
56 |
0 |
| T3 |
17726 |
48 |
0 |
| T4 |
160720 |
406 |
0 |
| T8 |
39865 |
67 |
0 |
| T9 |
6168 |
0 |
0 |
| T18 |
15599 |
48 |
0 |
| T38 |
81290 |
296 |
0 |
| T39 |
1993 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
| T41 |
0 |
1927 |
0 |
| T47 |
0 |
1393 |
0 |
| T57 |
0 |
1560 |
0 |
StPad_C
| Name | Attempts | Matches | Incomplete |
| Total |
578552030 |
53079 |
0 |
| T1 |
2466 |
3 |
0 |
| T2 |
6031 |
3 |
0 |
| T3 |
17726 |
3 |
0 |
| T4 |
160720 |
40 |
0 |
| T8 |
39865 |
7 |
0 |
| T9 |
6168 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
| T38 |
81290 |
65 |
0 |
| T39 |
1993 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
| T41 |
0 |
125 |
0 |
| T47 |
0 |
92 |
0 |
| T57 |
0 |
100 |
0 |
Line Coverage for Instance : tb.dut.u_sha3.u_pad
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 170 | 169 | 99.41 |
| ALWAYS | 157 | 6 | 6 | 100.00 |
| CONT_ASSIGN | 209 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 213 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 236 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 242 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 247 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 257 | 1 | 1 | 100.00 |
| ALWAYS | 267 | 6 | 6 | 100.00 |
| ALWAYS | 279 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 286 | 1 | 1 | 100.00 |
| ALWAYS | 293 | 3 | 3 | 100.00 |
| ALWAYS | 298 | 76 | 75 | 98.68 |
| CONT_ASSIGN | 509 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 520 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 538 | 1 | 1 | 100.00 |
| ALWAYS | 558 | 4 | 4 | 100.00 |
| CONT_ASSIGN | 578 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 588 | 1 | 1 | 100.00 |
| ALWAYS | 591 | 5 | 5 | 100.00 |
| ALWAYS | 603 | 5 | 5 | 100.00 |
| ALWAYS | 615 | 5 | 5 | 100.00 |
| ALWAYS | 664 | 10 | 10 | 100.00 |
| ALWAYS | 680 | 17 | 17 | 100.00 |
| ALWAYS | 779 | 6 | 6 | 100.00 |
| ALWAYS | 788 | 6 | 6 | 100.00 |
| ALWAYS | 798 | 6 | 6 | 100.00 |
156 always_comb begin
157 1/1 unique case (strength_i)
Tests: T1 T2 T3
158 1/1 L128: block_addr_limit = KeccakCountW'(KeccakRate[L128]);
Tests: T1 T2 T3
159 1/1 L224: block_addr_limit = KeccakCountW'(KeccakRate[L224]);
Tests: T41 T57 T47
160 1/1 L256: block_addr_limit = KeccakCountW'(KeccakRate[L256]);
Tests: T1 T2 T3
161 1/1 L384: block_addr_limit = KeccakCountW'(KeccakRate[L384]);
Tests: T3 T8 T4
162 1/1 L512: block_addr_limit = KeccakCountW'(KeccakRate[L512]);
Tests: T38 T41 T57
163
164 default: block_addr_limit = '0;
165 endcase
166 end
167
168 /////////////////////
169 // Control Signals //
170 /////////////////////
171
172 // `sel_mux` selects the output data among the incoming or internally generated data.
173 // MuxFifo: data from external (msg_data_i)
174 // MuxPrefix: bytepad(encode_string(N)||encode_string(S), )
175 // MuxFuncPad: function_pad with end of message
176 // MuxZeroEnd: all 0
177 mux_sel_e sel_mux;
178
179 // `sent_message` indicates the number of entries sent to keccak round per
180 // block. The value shall be enough to cover Maximum entry of the Keccak
181 // storage as defined in sha3_pkg, `$clog2(KeccakEntries+1)`. Logically,
182 // it is not needed to have more than KeccakEntries but for safety in case of
183 // SHA3 context switch resuming the SHA3 from the middle of sponge
184 // construction. If needed, the software should be able to write whole 1600
185 // bits. The `sent_message` is used to check sent_blocksize.
186 logic [KeccakCountW-1:0] sent_message;
187 logic inc_sentmsg, clr_sentmsg;
188
189 // This primitive is used to place a hardened counter
190 // SEC_CM: CTR.REDUN
191 prim_count #(
192 .Width(KeccakCountW)
193 ) u_sentmsg_count (
194 .clk_i,
195 .rst_ni,
196 .clr_i(clr_sentmsg),
197 .set_i(1'b0),
198 .set_cnt_i(KeccakCountW'(0)),
199 .incr_en_i(inc_sentmsg),
200 .decr_en_i(1'b0),
201 .step_i(KeccakCountW'(1)),
202 .commit_i(1'b1),
203 .cnt_o(sent_message),
204 .cnt_after_commit_o(),
205 .err_o(msg_count_error_o)
206 );
207
208
209 1/1 assign inc_sentmsg = keccak_valid_o & keccak_ready_i ;
Tests: T1 T2 T3
210
211 // Prefix index to slice the `prefix` n-bits into multiple of 64bit.
212 logic [KeccakMsgAddrW-1:0] prefix_index;
213 1/1 assign prefix_index = (sent_message < block_addr_limit) ? sent_message : '0;
Tests: T1 T2 T3
214
215 // fsm_keccak_valid is an output signal from FSM which to send data generated
216 // inside the pad logic to keccak_round
217 logic fsm_keccak_valid;
218
219 // hold_msg to prevent message from being forwarded into keccak_round and
220 // acked. Mainly the usage is to hold the message and initiates the
221 // keccak_round for current block.
222 logic hold_msg;
223
224 // latch the partial write. Latched data is used for funcpad_merged
225 logic en_msgbuf;
226 logic clr_msgbuf;
227
228 ///////////////////
229 // State Machine //
230 ///////////////////
231
232 // Inputs
233
234 // FSM moves to StPrefix only when cSHAKE is enabled
235 logic mode_eq_cshake;
236 1/1 assign mode_eq_cshake = (mode_i == CShake) ? 1'b 1 : 1'b 0;
Tests: T1 T2 T3
237
238 // `sent_blocksize` indicates the pad logic pushed block size data into
239 // keccak round logic.
240 logic sent_blocksize;
241
242 1/1 assign sent_blocksize = (sent_message == block_addr_limit) ? 1'b 1 : 1'b 0;
Tests: T1 T2 T3
243
244 // `keccak_ack` indicates the request is accepted in keccak_round
245 logic keccak_ack;
246
247 1/1 assign keccak_ack = keccak_valid_o & keccak_ready_i ;
Tests: T1 T2 T3
248
249 // msg_partial indicates the incoming message is partial write or not.
250 // This is used to check if the incoming message need to be latched inside or
251 // not. If no partial message is at the end, msg_buf doesn't have to latch
252 // msg_data_i. It is assumed that the partial message is permitted only at
253 // the end of the message. So if (msg_valid_i && msg_partial && msg_ready_o),
254 // there will be no msg_valid_i till process_latched.
255 // Shall be used with msg_valid_i together.
256 logic msg_partial;
257 1/1 assign msg_partial = (&msg_strb_i != 1'b 1);
Tests: T1 T2 T3
258
259
260 // `process_latched` latches the `process_i` input before it is seen in the
261 // FSM. `process_i` may follow `start_i` too fast so that the FSM may not
262 // see it fast enought in case of cSHAKE mode. cSHAKE needs to process the
263 // prefix prior to see the process indicator.
264 logic process_latched;
265
266 always_ff @(posedge clk_i or negedge rst_ni) begin
267 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
268 1/1 process_latched <= 1'b 0;
Tests: T1 T2 T3
269 1/1 end else if (process_i) begin
Tests: T1 T2 T3
270 1/1 process_latched <= 1'b 1;
Tests: T1 T2 T3
271 1/1 end else if (prim_mubi_pkg::mubi4_test_true_strict(done_i)) begin
Tests: T1 T2 T3
272 1/1 process_latched <= 1'b0;
Tests: T1 T2 T3
273 end
MISSING_ELSE
274 end
275
276 // State Register ===========================================================
277 pad_st_e st, st_d;
278
279 3/3 `PRIM_FLOP_SPARSE_FSM(u_state_regs, st_d, st, pad_st_e, StPadIdle)
Tests: T1 T2 T3 | T1 T2 T3 | T1 T2 T3
PRIM_FLOP_SPARSE_FSM(u_state_regs, st_d, st, pad_st_e, StPadIdle):
279.1 `ifdef SIMULATION
279.2 prim_sparse_fsm_flop #(
279.3 .StateEnumT(pad_st_e),
279.4 .Width($bits(pad_st_e)),
279.5 .ResetValue($bits(pad_st_e)'(StPadIdle)),
279.6 .EnableAlertTriggerSVA(1),
279.7 .CustomForceName("st")
279.8 ) u_state_regs (
279.9 .clk_i ( clk_i ),
279.10 .rst_ni ( rst_ni ),
279.11 .state_i ( st_d ),
279.12 .state_o ( )
279.13 );
279.14 always_ff @(posedge clk_i or negedge rst_ni) begin
279.15 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
279.16 1/1 st <= StPadIdle;
Tests: T1 T2 T3
279.17 end else begin
279.18 1/1 st <= st_d;
Tests: T1 T2 T3
279.19 end
279.20 end
279.21 u_state_regs_A: assert property (@(posedge clk_i) disable iff ((!rst_ni) !== '0) (st === u_state_regs.state_o))
279.22 else begin
279.23 `ifdef UVM
279.24 uvm_pkg::uvm_report_error("ASSERT FAILED", "u_state_regs_A", uvm_pkg::UVM_NONE,
279.25 "../src/lowrisc_ip_sha3_0.1/rtl/sha3pad.sv", 279, "", 1);
279.26 `else
279.27 $error("%0t: (%0s:%0d) [%m] [ASSERT FAILED] %0s", $time, `__FILE__, `__LINE__,
279.28 `PRIM_STRINGIFY(u_state_regs_A));
279.29 `endif
279.30 end
279.31 `else
279.32 prim_sparse_fsm_flop #(
279.33 .StateEnumT(pad_st_e),
279.34 .Width($bits(pad_st_e)),
279.35 .ResetValue($bits(pad_st_e)'(StPadIdle)),
279.36 .EnableAlertTriggerSVA(1)
279.37 ) u_state_regs (
279.38 .clk_i ( `PRIM_FLOP_CLK ),
279.39 .rst_ni ( `PRIM_FLOP_RST ),
279.40 .state_i ( st_d ),
279.41 .state_o ( st )
279.42 );
279.43 `endif280
281 // `end_of_block` indicates current beat is end of the block
282 // It shall set when the address reaches to the end of the block. End address
283 // is set by the strength_i, which is `block_addr_limit`.
284 logic end_of_block;
285
286 1/1 assign end_of_block = ((sent_message + 1'b1) == block_addr_limit) ? 1'b 1 : 1'b 0;
Tests: T1 T2 T3
287
288
289 // Next logic and output logic ==============================================
290 // SEC_CM: ABSORBED.CTRL.MUBI
291 prim_mubi_pkg::mubi4_t absorbed_d;
292 always_ff @(posedge clk_i or negedge rst_ni) begin
293 2/2 if (!rst_ni) absorbed_o <= prim_mubi_pkg::MuBi4False;
Tests: T1 T2 T3 | T1 T2 T3
294 1/1 else absorbed_o <= absorbed_d;
Tests: T1 T2 T3
295 end
296
297 always_comb begin
298 1/1 st_d = st;
Tests: T1 T2 T3
299
300 // FSM output : default values
301 1/1 keccak_run_o = 1'b 0;
Tests: T1 T2 T3
302 1/1 sel_mux = MuxNone;
Tests: T1 T2 T3
303
304 1/1 fsm_keccak_valid = 1'b 0;
Tests: T1 T2 T3
305
306 1/1 hold_msg = 1'b 0;
Tests: T1 T2 T3
307 1/1 clr_sentmsg = 1'b 0;
Tests: T1 T2 T3
308
309 1/1 en_msgbuf = 1'b 0;
Tests: T1 T2 T3
310 1/1 clr_msgbuf = 1'b 0;
Tests: T1 T2 T3
311
312 1/1 absorbed_d = prim_mubi_pkg::MuBi4False;
Tests: T1 T2 T3
313
314 1/1 sparse_fsm_error_o = 1'b 0;
Tests: T1 T2 T3
315
316 1/1 unique case (st)
Tests: T1 T2 T3
317
318 // In Idle state, the FSM checks if the software (or upper FSM) initiates
319 // the hash process. If `start_i` is asserted (assume it is pulse), FSM
320 // starts to push the data into the keccak round logic. Depending on the
321 // hashing mode, FSM may push additional prefex in front of the actual
322 // message. It means, the message could be back-pressured until the first
323 // prefix is processed.
324 StPadIdle: begin
325 1/1 if (start_i) begin
Tests: T1 T2 T3
326 // If cSHAKE, move to Prefix state
327 1/1 if (mode_eq_cshake) begin
Tests: T1 T2 T3
328 1/1 st_d = StPrefix;
Tests: T1 T2 T3
329 end else begin
330 1/1 st_d = StMessage;
Tests: T8 T18 T38
331 end
332 end else begin
333 1/1 st_d = StPadIdle;
Tests: T1 T2 T3
334 end
335 end
336
337 // At Prefix state, FSM pushes
338 // `bytepad(encode_string(N)||encode_string(S), 168or136)`. The software
339 // already prepared `encode_string(N) || encode_string(S)` in the regs.
340 // So, the FSM adds 2Byte in front of ns_data_i, which is an encoded
341 // block size (see `encoded_bytepad` below)
342 // After pushing the prefix, it initiates the hash process and move to
343 // Message state.
344 StPrefix: begin
345 1/1 sel_mux = MuxPrefix;
Tests: T1 T2 T3
346
347 1/1 if (sent_blocksize) begin
Tests: T1 T2 T3
348 1/1 st_d = StPrefixWait;
Tests: T1 T2 T3
349
350 1/1 keccak_run_o = 1'b 1;
Tests: T1 T2 T3
351 1/1 fsm_keccak_valid = 1'b 0;
Tests: T1 T2 T3
352 1/1 clr_sentmsg = 1'b 1;
Tests: T1 T2 T3
353 end else begin
354 1/1 st_d = StPrefix;
Tests: T1 T2 T3
355
356 1/1 fsm_keccak_valid = 1'b 1;
Tests: T1 T2 T3
357 end
358 end
359
360 StPrefixWait: begin
361 1/1 sel_mux = MuxPrefix;
Tests: T1 T2 T3
362
363 1/1 if (keccak_complete_i) begin
Tests: T1 T2 T3
364 1/1 st_d = StMessage;
Tests: T1 T2 T3
365 end else begin
366 1/1 st_d = StPrefixWait;
Tests: T1 T2 T3
367 end
368 end
369
370 // Message state pushes the incoming message into keccak round logic.
371 // It forwards the message while counting the data and if it reaches
372 // the block size, it triggers the keccak round to run. If `process` is
373 // set, it moves to Pad state.
374 StMessage: begin
375 1/1 sel_mux = MuxFifo;
Tests: T1 T2 T3
376
377 1/1 if (msg_valid_i && msg_partial) begin
Tests: T1 T2 T3
378 1/1 st_d = StMessage;
Tests: T1 T2 T8
379
380 1/1 en_msgbuf = 1'b 1;
Tests: T1 T2 T8
381 1/1 end else if (sent_blocksize) begin
Tests: T1 T2 T3
382 // Check block completion first even process is set.
383 1/1 st_d = StMessageWait;
Tests: T1 T2 T3
384
385 1/1 keccak_run_o = 1'b 1;
Tests: T1 T2 T3
386 1/1 clr_sentmsg = 1'b 1;
Tests: T1 T2 T3
387 1/1 hold_msg = 1'b 1;
Tests: T1 T2 T3
388 1/1 end else if (process_latched || process_i) begin
Tests: T1 T2 T3
389 1/1 st_d = StPad;
Tests: T1 T2 T3
390
391 // Not asserting the msg_ready_o
392 1/1 hold_msg = 1'b 1;
Tests: T1 T2 T3
393 end else begin
394 1/1 st_d = StMessage;
Tests: T1 T2 T3
395
396 end
397 end
398
399 StMessageWait: begin
400 1/1 hold_msg = 1'b 1;
Tests: T1 T2 T3
401
402 1/1 if (keccak_complete_i) begin
Tests: T1 T2 T3
403 1/1 st_d = StMessage;
Tests: T1 T2 T3
404 end else begin
405 1/1 st_d = StMessageWait;
Tests: T1 T2 T3
406 end
407 end
408
409 // Pad state just pushes the ending suffix. Depending on the mode, the
410 // padding value is unique. SHA3 adds 2'b10, SHAKE adds 4'b1111, and
411 // cSHAKE adds 2'b 00. Refer `function_pad`. The signal has one more bit
412 // defined to accomodate first 1 bit of `pad10*1()` function.
413 StPad: begin
414 1/1 sel_mux = MuxFuncPad;
Tests: T1 T2 T3
415
416 1/1 fsm_keccak_valid = 1'b 1;
Tests: T1 T2 T3
417
418 1/1 if (keccak_ack && end_of_block) begin
Tests: T1 T2 T3
419 // If padding is the last block, don't have to move to StPad01, just
420 // run Keccak and complete
421 1/1 st_d = StPadRun;
Tests: T38 T4 T44
422
423 // always clear the latched msgbuf
424 1/1 clr_msgbuf = 1'b 1;
Tests: T38 T4 T44
425 1/1 clr_sentmsg = 1'b 1;
Tests: T38 T4 T44
426 1/1 end else if (keccak_ack) begin
Tests: T1 T2 T3
427 1/1 st_d = StPad01;
Tests: T1 T2 T3
428 1/1 clr_msgbuf = 1'b 1;
Tests: T1 T2 T3
429 end else begin
430 0/1 ==> st_d = StPad;
431 end
432 end
433
434 StPadRun: begin
435 1/1 st_d = StPadFlush;
Tests: T38 T4 T44
436
437 1/1 keccak_run_o = 1'b 1;
Tests: T38 T4 T44
438 1/1 clr_sentmsg = 1'b 1;
Tests: T38 T4 T44
439 end
440
441 // Pad01 pushes the end bit of pad10*1() function. As keccak accepts byte
442 // size only, StPad always pushes partial (5bits). So at this state, it
443 // pushes rest of 3bits. If the data pushed in StPad is the last byte of
444 // the block, then Pad01 pushes to the same byte, if not, it first
445 // zero-fill the block then pad 1 to the end.
446 StPad01: begin
447 1/1 sel_mux = MuxZeroEnd;
Tests: T1 T2 T3
448
449 // There's no chance StPad01 can be a start of the block. So can be
450 // discard that the sent_blocksize is set at the beginning.
451 1/1 if (sent_blocksize) begin
Tests: T1 T2 T3
452 1/1 st_d = StPadFlush;
Tests: T1 T2 T3
453
454 1/1 fsm_keccak_valid = 1'b 0;
Tests: T1 T2 T3
455 1/1 keccak_run_o = 1'b 1;
Tests: T1 T2 T3
456 1/1 clr_sentmsg = 1'b 1;
Tests: T1 T2 T3
457 end else begin
458 1/1 st_d = StPad01;
Tests: T1 T2 T3
459
460 1/1 fsm_keccak_valid = 1'b 1;
Tests: T1 T2 T3
461 end
462 end
463
464 StPadFlush: begin
465 // Wait completion from keccak_round or wait SW indicator.
466 1/1 clr_sentmsg = 1'b 1;
Tests: T1 T2 T3
467 1/1 clr_msgbuf = 1'b 1;
Tests: T1 T2 T3
468
469 1/1 if (keccak_complete_i) begin
Tests: T1 T2 T3
470 1/1 st_d = StPadIdle;
Tests: T1 T2 T3
471
472 1/1 absorbed_d = prim_mubi_pkg::MuBi4True;
Tests: T1 T2 T3
473 end else begin
474 1/1 st_d = StPadFlush;
Tests: T1 T2 T3
475 end
476 end
477
478 StTerminalError: begin
479 // this state is terminal
480 1/1 st_d = st;
Tests: T9 T10 T11
481 1/1 sparse_fsm_error_o = 1'b 1;
Tests: T9 T10 T11
482 end
483
484 default: begin
485 // this state is terminal
486 st_d = StTerminalError;
487 sparse_fsm_error_o = 1'b 1;
488 end
489 endcase
490
491 // SEC_CM: FSM.GLOBAL_ESC, FSM.LOCAL_ESC
492 // Unconditionally jump into the terminal error state
493 // if the life cycle controller triggers an escalation.
494 1/1 if (lc_ctrl_pkg::lc_tx_test_true_loose(lc_escalate_en_i)) begin
Tests: T1 T2 T3
495 1/1 st_d = StTerminalError;
Tests: T9 T10 T11
496 end
MISSING_ELSE
497 end
498
499 //////////////
500 // Datapath //
501 //////////////
502
503 // `encode_bytepad` represents the first two bytes of bytepad()
504 // It depends on the block size. We can reuse KeccakRate
505 // 10000000 || 00010101 // 168
506 // 10000000 || 00010001 // 136
507 logic [15:0] encode_bytepad;
508
509 1/1 assign encode_bytepad = encode_bytepad_len(strength_i);
Tests: T1 T2 T3
510
511 // Prefix size ==============================================================
512 // Prefix represents bytepad(encode_string(N) || encode_string(S), 168 or 136)
513 // encode_string(N) || encode_string(S) is prepared by the software and given
514 // through `ns_data_i`. The first part of bytepad is determined by the
515 // `strength_i` and stored into `encode_bytepad`.
516
517 // It is assumed that the prefix always smaller than the block size.
518 logic [PrefixSize*8-1:0] prefix;
519
520 1/1 assign prefix = {ns_data_i, encode_bytepad};
Tests: T1 T2 T3
521
522 logic [MsgWidth-1:0] prefix_sliced;
523 logic [MsgWidth-1:0] prefix_data [Share];
524
525 prim_slicer #(
526 .InW (PrefixSize*8),
527 .IndexW(KeccakMsgAddrW),
528 .OutW(MsgWidth)
529 ) u_prefix_slicer (
530 .sel_i (prefix_index),
531 .data_i (prefix),
532 .data_o (prefix_sliced)
533 );
534
535 if (EnMasking) begin : gen_prefix_masked
536 // If Masking is enabled, prefix is two share.
537 assign prefix_data[0] = '0;
538 1/1 assign prefix_data[1] = prefix_sliced;
Tests: T1 T2 T3
539 end else begin : gen_prefix_unmasked
540 // If Unmasked, only one share exists.
541 assign prefix_data[0] = prefix_sliced;
542 end
543
544 // ==========================================================================
545 // function_pad is the unique value padded at the end of the message based on
546 // the function among SHA3, SHAKE, cSHAKE. The standard mentioned that SHA3
547 // pads `01` , SHAKE pads `1111`, and cSHAKE pads `00`.
548 //
549 // Then pad10*1() function follows. It adds `1` first then fill 0 until it
550 // reaches the block size -1, then adds `1`.
551 //
552 // It means always `1` is followed by the function pad.
553 logic [4:0] funcpad;
554
555 logic [MsgWidth-1:0] funcpad_data [Share];
556
557 always_comb begin
558 1/1 unique case (mode_i)
Tests: T1 T2 T3
559 1/1 Sha3: funcpad = 5'b 00110;
Tests: T1 T2 T3
560 1/1 Shake: funcpad = 5'b 11111;
Tests: T39 T8 T18
561 1/1 CShake: funcpad = 5'b 00100;
Tests: T1 T2 T3
562
563 default: begin
564 // Just create non-padding but pad10*1 only
565 funcpad = 5'b 00001;
566 end
567 endcase
568 end
569
570 // ==========================================================================
571 // `zero_with_endbit` contains all zero unless the message is for the last
572 // MsgWidth beat in the block. If it is the end of the block, the last bit
573 // will be set to complete pad10*1() functionality.
574 logic [MsgWidth-1:0] zero_with_endbit [Share];
575
576 if (EnMasking) begin : gen_zeroend_masked
577 assign zero_with_endbit[0] = '0;
578 1/1 assign zero_with_endbit[1][MsgWidth-1] = end_of_block;
Tests: T1 T2 T3
579 assign zero_with_endbit[1][MsgWidth-2:0] = '0;
580 end else begin : gen_zeroend_unmasked
581 assign zero_with_endbit[0][MsgWidth-1] = end_of_block;
582 assign zero_with_endbit[0][MsgWidth-2:0] = '0;
583 end
584
585 // ==========================================================================
586 // Data mux for output data
587
588 1/1 assign keccak_addr_o = (sent_message < block_addr_limit) ? sent_message : '0;
Tests: T1 T2 T3
589
590 always_comb begin
591 1/1 unique case (sel_mux)
Tests: T1 T2 T3
592 1/1 MuxFifo: keccak_data_o = msg_data_i;
Tests: T1 T2 T3
593 1/1 MuxPrefix: keccak_data_o = prefix_data;
Tests: T1 T2 T3
594 1/1 MuxFuncPad: keccak_data_o = funcpad_data;
Tests: T1 T2 T3
595 1/1 MuxZeroEnd: keccak_data_o = zero_with_endbit;
Tests: T1 T2 T3
596
597 // MuxNone
598 default: keccak_data_o = '{default:'0};
599 endcase
600 end
601
602 always_comb begin
603 1/1 unique case (sel_mux)
Tests: T1 T2 T3
604 1/1 MuxFifo: keccak_valid_o = msg_valid_i & ~hold_msg & ~en_msgbuf;
Tests: T1 T2 T3
605 1/1 MuxPrefix: keccak_valid_o = fsm_keccak_valid;
Tests: T1 T2 T3
606 1/1 MuxFuncPad: keccak_valid_o = fsm_keccak_valid;
Tests: T1 T2 T3
607 1/1 MuxZeroEnd: keccak_valid_o = fsm_keccak_valid;
Tests: T1 T2 T3
608
609 // MuxNone
610 default: keccak_valid_o = 1'b 0;
611 endcase
612 end
613
614 always_comb begin
615 1/1 unique case (sel_mux)
Tests: T1 T2 T3
616 1/1 MuxFifo: msg_ready_o = en_msgbuf | (keccak_ready_i & ~hold_msg);
Tests: T1 T2 T3
617 1/1 MuxPrefix: msg_ready_o = 1'b 0;
Tests: T1 T2 T3
618 1/1 MuxFuncPad: msg_ready_o = 1'b 0;
Tests: T1 T2 T3
619 1/1 MuxZeroEnd: msg_ready_o = 1'b 0;
Tests: T1 T2 T3
620
621 // MuxNone
622 default: msg_ready_o = 1'b 0;
623 endcase
624 end
625
626 // prim_packer : packing to 64bit to update keccak storage
627 // two prim_packer in this module are used to pack the data received from
628 // upper layer (KMAC core) and also the 5bit padding bits.
629 // It is assumed that the message from upper layer could be partial at the
630 // end of the message. Then the 2 or 4bit padding is required. It can be
631 // handled by some custom logic or could be done by prim_packer.
632 // If packer is used, the MSG_FIFO doesn't have to have another prim_packer
633 // in front of the FIFO. This logic can handle the partial writes from the
634 // software.
635 //
636 // If a custom logic is implemented here, prim_packer is necessary in front
637 // of the FIFO, as this logic only appends at the end of the message when
638 // `process_i` is asserted. Also, in this case, even prim_packer is not
639 // needed, still 64bit registers to latch the partial write is required.
640 // If not, the logic has to delay the acceptance of the incoming write
641 // accesses. It may trigger the back-pressuring in some case which may result
642 // that the software(or upper layer) may not set process_i.
643 //
644 // For custom logic, it could be implemented by the 8 mux selection.
645 // for instance: (subject to be changed)
646 // unique case (sent_byte[2:0]) // generated from msg_strb_i
647 // 3'b 000: funcpad_merged = {end_of_block, 63'(function_pad) };
648 // 3'b 001: funcpad_merged = {end_of_block, 55'(function_pad), msg_data_i[ 7:0]};
649 // 3'b 010: funcpad_merged = {end_of_block, 47'(function_pad), msg_data_i[15:0]};
650 // 3'b 011: funcpad_merged = {end_of_block, 39'(function_pad), msg_data_i[23:0]};
651 // 3'b 100: funcpad_merged = {end_of_block, 31'(function_pad), msg_data_i[31:0]};
652 // 3'b 101: funcpad_merged = {end_of_block, 23'(function_pad), msg_data_i[39:0]};
653 // 3'b 110: funcpad_merged = {end_of_block, 15'(function_pad), msg_data_i[47:0]};
654 // 3'b 111: funcpad_merged = {end_of_block, 7'(function_pad), msg_data_i[55:0]};
655 // default: funcpad_merged = '0;
656 // endcase
657
658 // internal buffer to store partial write. It doesn't have to store last byte as it
659 // stores only when partial write.
660 logic [MsgWidth-8-1:0] msg_buf [Share];
661 logic [MsgStrbW-1-1:0] msg_strb;
662
663 always_ff @(posedge clk_i or negedge rst_ni) begin
664 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
665 1/1 msg_buf <= '{default:'0};
Tests: T1 T2 T3
666 1/1 msg_strb <= '0;
Tests: T1 T2 T3
667 1/1 end else if (en_msgbuf) begin
Tests: T1 T2 T3
668 1/1 for (int i = 0 ; i < Share ; i++) begin
Tests: T1 T2 T8
669 1/1 msg_buf[i] <= msg_data_i[i][0+:(MsgWidth-8)];
Tests: T1 T2 T8
670 end
671 1/1 msg_strb <= msg_strb_i[0+:(MsgStrbW-1)];
Tests: T1 T2 T8
672 1/1 end else if (clr_msgbuf) begin
Tests: T1 T2 T3
673 1/1 msg_buf <= '{default:'0};
Tests: T1 T2 T3
674 1/1 msg_strb <= '0;
Tests: T1 T2 T3
675 end
MISSING_ELSE
676 end
677
678 if (EnMasking) begin : gen_funcpad_data_masked
679 always_comb begin
680 1/1 unique case (msg_strb)
Tests: T1 T2 T3
681 7'b 000_0000: begin
682 1/1 funcpad_data[0] = '0;
Tests: T1 T2 T3
683 1/1 funcpad_data[1] = {end_of_block, 63'(funcpad) };
Tests: T1 T2 T3
684 end
685 7'b 000_0001: begin
686 1/1 funcpad_data[0] = {56'h0, msg_buf[0][ 7:0]};
Tests: T8 T38 T41
687 1/1 funcpad_data[1] = {end_of_block, 55'(funcpad), msg_buf[1][ 7:0]};
Tests: T8 T38 T41
688 end
689 7'b 000_0011: begin
690 1/1 funcpad_data[0] = {48'h0, msg_buf[0][15:0]};
Tests: T1 T8 T38
691 1/1 funcpad_data[1] = {end_of_block, 47'(funcpad), msg_buf[1][15:0]};
Tests: T1 T8 T38
692 end
693 7'b 000_0111: begin
694 1/1 funcpad_data[0] = {40'h0, msg_buf[0][23:0]};
Tests: T2 T18 T38
695 1/1 funcpad_data[1] = {end_of_block, 39'(funcpad), msg_buf[1][23:0]};
Tests: T2 T18 T38
696 end
697 7'b 000_1111: begin
698 1/1 funcpad_data[0] = {32'h0, msg_buf[0][31:0]};
Tests: T38 T41 T57
699 1/1 funcpad_data[1] = {end_of_block, 31'(funcpad), msg_buf[1][31:0]};
Tests: T38 T41 T57
700 end
701 7'b 001_1111: begin
702 1/1 funcpad_data[0] = {24'h0, msg_buf[0][39:0]};
Tests: T8 T18 T38
703 1/1 funcpad_data[1] = {end_of_block, 23'(funcpad), msg_buf[1][39:0]};
Tests: T8 T18 T38
704 end
705 7'b 011_1111: begin
706 1/1 funcpad_data[0] = {16'h0, msg_buf[0][47:0]};
Tests: T1 T18 T38
707 1/1 funcpad_data[1] = {end_of_block, 15'(funcpad), msg_buf[1][47:0]};
Tests: T1 T18 T38
708 end
709 7'b 111_1111: begin
710 1/1 funcpad_data[0] = { 8'h0, msg_buf[0][55:0]};
Tests: T2 T8 T38
711 1/1 funcpad_data[1] = {end_of_block, 7'(funcpad), msg_buf[1][55:0]};
Tests: T2 T8 T38
712 end
713
714 default: funcpad_data = '{default:'0};
715 endcase
716 end
717 end else begin : gen_funcpad_data_unmasked
718 always_comb begin
719 unique case (msg_strb)
720 7'b 000_0000: funcpad_data[0] = {end_of_block, 63'(funcpad) };
721 7'b 000_0001: funcpad_data[0] = {end_of_block, 55'(funcpad), msg_buf[0][ 7:0]};
722 7'b 000_0011: funcpad_data[0] = {end_of_block, 47'(funcpad), msg_buf[0][15:0]};
723 7'b 000_0111: funcpad_data[0] = {end_of_block, 39'(funcpad), msg_buf[0][23:0]};
724 7'b 000_1111: funcpad_data[0] = {end_of_block, 31'(funcpad), msg_buf[0][31:0]};
725 7'b 001_1111: funcpad_data[0] = {end_of_block, 23'(funcpad), msg_buf[0][39:0]};
726 7'b 011_1111: funcpad_data[0] = {end_of_block, 15'(funcpad), msg_buf[0][47:0]};
727 7'b 111_1111: funcpad_data[0] = {end_of_block, 7'(funcpad), msg_buf[0][55:0]};
728
729 default: funcpad_data = '{default:'0};
730 endcase
731 end
732 end
733
734 ////////////////
735 // Assertions //
736 ////////////////
737
738 // Prefix size is smaller than the smallest Keccak Block Size, which is 72 bytes.
739 `ASSERT_INIT(PrefixLessThanBlock_A, PrefixSize/8 < KeccakRate[4])
740
741 // Some part of datapath in sha3pad assumes Data width as 64bit.
742 // If data width need to be changed, funcpad_data part should be changed too.
743 // Also, The blocksize shall be divided by MsgWidth, which means, MsgWidth
744 // can be {16, 32, 64} even funcpad_data mux is fully flexible.
745 `ASSERT_INIT(MsgWidthidth_A, MsgWidth == 64)
746
747 // Assume pulse signals: start, process, done
748 `ASSUME(StartPulse_A, start_i |=> !start_i)
749 `ASSUME(ProcessPulse_A, process_i |=> !process_i)
750 `ASSUME(DonePulse_A,
751 prim_mubi_pkg::mubi4_test_true_strict(done_i) |=>
752 prim_mubi_pkg::mubi4_test_false_strict(done_i))
753
754 // ASSERT output pulse signals: absorbed_o, keccak_run_o
755 `ASSERT(AbsorbedPulse_A,
756 prim_mubi_pkg::mubi4_test_true_strict(absorbed_o) |=>
757 prim_mubi_pkg::mubi4_test_false_strict(absorbed_o))
758 `ASSERT(KeccakRunPulse_A, keccak_run_o |=> !keccak_run_o)
759
760 // start_i, done_i, process_i cannot set high at the same time
761 `ASSUME(StartProcessDoneMutex_a,
762 $onehot0({
763 start_i,
764 process_i,
765 prim_mubi_pkg::mubi4_test_true_loose(done_i)
766 }))
767
768 // Sequence, start_i --> process_i --> absorbed_o --> done_i
769 //`ASSUME(Sequence_a, start_i ##[1:$] process_i ##[1:$] ##[1:$] absorbed_o ##[1:$] done_i)
770
771 `ifndef SYNTHESIS
772 // Process only asserts after start and all message are fed.
773 // These valid signals are qualifier of FPV to trigger the control signal
774 // It is a little bit hard to specify these criteria in SVA property so creating
775 // qualifiers in RTL form is easier.
776 logic start_valid, process_valid, absorb_valid, done_valid;
777
778 always_ff @(posedge clk_i or negedge rst_ni) begin
779 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
780 1/1 start_valid <= 1'b 1;
Tests: T1 T2 T3
781 1/1 end else if (start_i) begin
Tests: T1 T2 T3
782 1/1 start_valid <= 1'b 0;
Tests: T1 T2 T3
783 1/1 end else if (prim_mubi_pkg::mubi4_test_true_strict(done_i)) begin
Tests: T1 T2 T3
784 1/1 start_valid <= 1'b 1;
Tests: T1 T2 T3
785 end
MISSING_ELSE
786 end
787 always_ff @(posedge clk_i or negedge rst_ni) begin
788 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
789 1/1 process_valid <= 1'b 0;
Tests: T1 T2 T3
790 1/1 end else if (start_i) begin
Tests: T1 T2 T3
791 1/1 process_valid <= 1'b 1;
Tests: T1 T2 T3
792 1/1 end else if (process_i) begin
Tests: T1 T2 T3
793 1/1 process_valid <= 1'b 0;
Tests: T1 T2 T3
794 end
MISSING_ELSE
795 end
796
797 always_ff @(posedge clk_i or negedge rst_ni) begin
798 1/1 if (!rst_ni) begin
Tests: T1 T2 T3
799 1/1 done_valid <= 1'b 0;
Tests: T1 T2 T3
800 1/1 end else if (prim_mubi_pkg::mubi4_test_true_strict(absorbed_o)) begin
Tests: T1 T2 T3
801 1/1 done_valid <= 1'b 1;
Tests: T1 T2 T3
802 1/1 end else if (prim_mubi_pkg::mubi4_test_true_strict(done_i)) begin
Tests: T1 T2 T3
803 1/1 done_valid <= 1'b 0;
Tests: T1 T2 T3
804 end
MISSING_ELSE
Cond Coverage for Instance : tb.dut.u_sha3.u_pad
| Total | Covered | Percent |
|---|
| Conditions | 43 | 38 | 88.37 |
| Logical | 43 | 38 | 88.37 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 209
EXPRESSION (keccak_valid_o & keccak_ready_i)
-------1------ -------2------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Not Covered | |
| 1 | 1 | Covered | T1,T2,T3 |
LINE 213
EXPRESSION ((sent_message < block_addr_limit) ? sent_message : '0)
----------------1----------------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 236
EXPRESSION ((mode_i == CShake) ? 1'b1 : 1'b0)
---------1--------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 236
SUB-EXPRESSION (mode_i == CShake)
---------1--------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 242
EXPRESSION ((sent_message == block_addr_limit) ? 1'b1 : 1'b0)
-----------------1----------------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 242
SUB-EXPRESSION (sent_message == block_addr_limit)
-----------------1----------------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 247
EXPRESSION (keccak_valid_o & keccak_ready_i)
-------1------ -------2------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Not Covered | |
| 1 | 1 | Covered | T1,T2,T3 |
LINE 257
EXPRESSION ((&msg_strb_i) != 1'b1)
-----------1-----------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 286
EXPRESSION (((sent_message + 1'b1) == block_addr_limit) ? 1'b1 : 1'b0)
---------------------1---------------------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 286
SUB-EXPRESSION ((sent_message + 1'b1) == block_addr_limit)
---------------------1---------------------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 377
EXPRESSION (msg_valid_i && msg_partial)
-----1----- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T2,T8 |
LINE 388
EXPRESSION (process_latched || process_i)
-------1------- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T38,T4,T44 |
LINE 418
EXPRESSION (keccak_ack && end_of_block)
-----1---- ------2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Not Covered | |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T38,T4,T44 |
LINE 588
EXPRESSION ((sent_message < block_addr_limit) ? sent_message : '0)
----------------1----------------
| -1- | Status | Tests |
|---|
| 0 | Covered | T1,T2,T3 |
| 1 | Covered | T1,T2,T3 |
LINE 604
EXPRESSION (msg_valid_i & ((~hold_msg)) & ((~en_msgbuf)))
-----1----- ------2------ -------3------
| -1- | -2- | -3- | Status | Tests |
|---|
| 0 | 1 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | 1 | Covered | T4,T12,T13 |
| 1 | 1 | 0 | Covered | T1,T2,T8 |
| 1 | 1 | 1 | Covered | T1,T2,T3 |
LINE 616
EXPRESSION (en_msgbuf | (keccak_ready_i & ((~hold_msg))))
----1---- ----------------2---------------
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Not Covered | |
LINE 616
SUB-EXPRESSION (keccak_ready_i & ((~hold_msg)))
-------1------ ------2------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Not Covered | |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T2,T3 |
FSM Coverage for Instance : tb.dut.u_sha3.u_pad
Summary for FSM :: st
| Total | Covered | Percent | |
| States |
10 |
10 |
100.00 |
(Not included in score) |
| Transitions |
18 |
18 |
100.00 |
|
| Sequences |
0 |
0 |
|
|
State, Transition and Sequence Details for FSM :: st
| states | Line No. | Covered | Tests |
| StMessage |
330 |
Covered |
T1,T2,T3 |
| StMessageWait |
383 |
Covered |
T1,T2,T3 |
| StPad |
389 |
Covered |
T1,T2,T3 |
| StPad01 |
427 |
Covered |
T1,T2,T3 |
| StPadFlush |
435 |
Covered |
T1,T2,T3 |
| StPadIdle |
333 |
Covered |
T1,T2,T3 |
| StPadRun |
421 |
Covered |
T38,T4,T44 |
| StPrefix |
328 |
Covered |
T1,T2,T3 |
| StPrefixWait |
348 |
Covered |
T1,T2,T3 |
| StTerminalError |
495 |
Covered |
T9,T10,T11 |
| transitions | Line No. | Covered | Tests | Exclude Annotation |
| StMessage->StMessageWait |
383 |
Covered |
T1,T2,T3 |
|
| StMessage->StPad |
389 |
Covered |
T1,T2,T3 |
|
| StMessage->StTerminalError |
495 |
Covered |
T35,T83,T88 |
|
| StMessageWait->StMessage |
403 |
Covered |
T1,T2,T3 |
|
| StMessageWait->StTerminalError |
495 |
Covered |
T9,T50,T55 |
|
| StPad->StPad01 |
427 |
Covered |
T1,T2,T3 |
|
| StPad->StPadRun |
421 |
Covered |
T38,T4,T44 |
|
| StPad->StTerminalError |
495 |
Excluded |
|
[LOW_RISK] The transition from any state to error_terminal state is fully verified in FPV. |
| StPad01->StPadFlush |
452 |
Covered |
T1,T2,T3 |
|
| StPad01->StTerminalError |
495 |
Excluded |
|
[LOW_RISK] The transition from any state to error_terminal state is fully verified in FPV. |
| StPadFlush->StPadIdle |
470 |
Covered |
T1,T2,T3 |
|
| StPadFlush->StTerminalError |
495 |
Covered |
T54 |
|
| StPadIdle->StMessage |
330 |
Covered |
T8,T18,T38 |
|
| StPadIdle->StPrefix |
328 |
Covered |
T1,T2,T3 |
|
| StPadIdle->StTerminalError |
495 |
Covered |
T10,T11,T34 |
|
| StPadRun->StPadFlush |
435 |
Covered |
T38,T4,T44 |
|
| StPadRun->StTerminalError |
495 |
Excluded |
|
[LOW_RISK] The transition from any state to error_terminal state is fully verified in FPV. |
| StPrefix->StPrefixWait |
348 |
Covered |
T1,T2,T3 |
|
| StPrefix->StTerminalError |
495 |
Covered |
T89,T90 |
|
| StPrefixWait->StMessage |
364 |
Covered |
T1,T2,T3 |
|
| StPrefixWait->StTerminalError |
495 |
Covered |
T36,T30,T31 |
|
Branch Coverage for Instance : tb.dut.u_sha3.u_pad
| Line No. | Total | Covered | Percent |
| Branches |
|
93 |
89 |
95.70 |
| TERNARY |
213 |
2 |
2 |
100.00 |
| TERNARY |
236 |
2 |
2 |
100.00 |
| TERNARY |
242 |
2 |
2 |
100.00 |
| TERNARY |
286 |
2 |
2 |
100.00 |
| TERNARY |
588 |
2 |
2 |
100.00 |
| CASE |
157 |
6 |
5 |
83.33 |
| IF |
267 |
4 |
4 |
100.00 |
| IF |
279 |
2 |
2 |
100.00 |
| IF |
293 |
2 |
2 |
100.00 |
| CASE |
316 |
23 |
22 |
95.65 |
| IF |
494 |
2 |
2 |
100.00 |
| CASE |
558 |
4 |
3 |
75.00 |
| CASE |
591 |
5 |
5 |
100.00 |
| CASE |
603 |
5 |
5 |
100.00 |
| CASE |
615 |
5 |
5 |
100.00 |
| IF |
664 |
4 |
4 |
100.00 |
| IF |
779 |
4 |
4 |
100.00 |
| IF |
788 |
4 |
4 |
100.00 |
| IF |
798 |
4 |
4 |
100.00 |
| CASE |
680 |
9 |
8 |
88.89 |
213 assign prefix_index = (sent_message < block_addr_limit) ? sent_message : '0;
-1-
==>
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
236 assign mode_eq_cshake = (mode_i == CShake) ? 1'b 1 : 1'b 0;
-1-
==>
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
242 assign sent_blocksize = (sent_message == block_addr_limit) ? 1'b 1 : 1'b 0;
-1-
==>
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
286 assign end_of_block = ((sent_message + 1'b1) == block_addr_limit) ? 1'b 1 : 1'b 0;
-1-
==>
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
588 assign keccak_addr_o = (sent_message < block_addr_limit) ? sent_message : '0;
-1-
==>
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
157 unique case (strength_i)
-1-
158 L128: block_addr_limit = KeccakCountW'(KeccakRate[L128]);
==>
159 L224: block_addr_limit = KeccakCountW'(KeccakRate[L224]);
==>
160 L256: block_addr_limit = KeccakCountW'(KeccakRate[L256]);
==>
161 L384: block_addr_limit = KeccakCountW'(KeccakRate[L384]);
==>
162 L512: block_addr_limit = KeccakCountW'(KeccakRate[L512]);
==>
163
164 default: block_addr_limit = '0;
==>
Branches:
| -1- | Status | Tests |
| L128 |
Covered |
T1,T2,T3 |
| L224 |
Covered |
T41,T57,T47 |
| L256 |
Covered |
T1,T2,T3 |
| L384 |
Covered |
T3,T8,T4 |
| L512 |
Covered |
T38,T41,T57 |
| default |
Not Covered |
|
267 if (!rst_ni) begin
-1-
268 process_latched <= 1'b 0;
==>
269 end else if (process_i) begin
-2-
270 process_latched <= 1'b 1;
==>
271 end else if (prim_mubi_pkg::mubi4_test_true_strict(done_i)) begin
-3-
272 process_latched <= 1'b0;
==>
273 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | Status | Tests |
| 1 |
- |
- |
Covered |
T1,T2,T3 |
| 0 |
1 |
- |
Covered |
T1,T2,T3 |
| 0 |
0 |
1 |
Covered |
T1,T2,T3 |
| 0 |
0 |
0 |
Covered |
T1,T2,T3 |
279 `PRIM_FLOP_SPARSE_FSM(u_state_regs, st_d, st, pad_st_e, StPadIdle)
-1-
==>
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
293 if (!rst_ni) absorbed_o <= prim_mubi_pkg::MuBi4False;
-1-
==>
294 else absorbed_o <= absorbed_d;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
316 unique case (st)
-1-
317
318 // In Idle state, the FSM checks if the software (or upper FSM) initiates
319 // the hash process. If `start_i` is asserted (assume it is pulse), FSM
320 // starts to push the data into the keccak round logic. Depending on the
321 // hashing mode, FSM may push additional prefex in front of the actual
322 // message. It means, the message could be back-pressured until the first
323 // prefix is processed.
324 StPadIdle: begin
325 if (start_i) begin
-2-
326 // If cSHAKE, move to Prefix state
327 if (mode_eq_cshake) begin
-3-
328 st_d = StPrefix;
==>
329 end else begin
330 st_d = StMessage;
==>
331 end
332 end else begin
333 st_d = StPadIdle;
==>
334 end
335 end
336
337 // At Prefix state, FSM pushes
338 // `bytepad(encode_string(N)||encode_string(S), 168or136)`. The software
339 // already prepared `encode_string(N) || encode_string(S)` in the regs.
340 // So, the FSM adds 2Byte in front of ns_data_i, which is an encoded
341 // block size (see `encoded_bytepad` below)
342 // After pushing the prefix, it initiates the hash process and move to
343 // Message state.
344 StPrefix: begin
345 sel_mux = MuxPrefix;
346
347 if (sent_blocksize) begin
-4-
348 st_d = StPrefixWait;
==>
349
350 keccak_run_o = 1'b 1;
351 fsm_keccak_valid = 1'b 0;
352 clr_sentmsg = 1'b 1;
353 end else begin
354 st_d = StPrefix;
==>
355
356 fsm_keccak_valid = 1'b 1;
357 end
358 end
359
360 StPrefixWait: begin
361 sel_mux = MuxPrefix;
362
363 if (keccak_complete_i) begin
-5-
364 st_d = StMessage;
==>
365 end else begin
366 st_d = StPrefixWait;
==>
367 end
368 end
369
370 // Message state pushes the incoming message into keccak round logic.
371 // It forwards the message while counting the data and if it reaches
372 // the block size, it triggers the keccak round to run. If `process` is
373 // set, it moves to Pad state.
374 StMessage: begin
375 sel_mux = MuxFifo;
376
377 if (msg_valid_i && msg_partial) begin
-6-
378 st_d = StMessage;
==>
379
380 en_msgbuf = 1'b 1;
381 end else if (sent_blocksize) begin
-7-
382 // Check block completion first even process is set.
383 st_d = StMessageWait;
==>
384
385 keccak_run_o = 1'b 1;
386 clr_sentmsg = 1'b 1;
387 hold_msg = 1'b 1;
388 end else if (process_latched || process_i) begin
-8-
389 st_d = StPad;
==>
390
391 // Not asserting the msg_ready_o
392 hold_msg = 1'b 1;
393 end else begin
394 st_d = StMessage;
==>
395
396 end
397 end
398
399 StMessageWait: begin
400 hold_msg = 1'b 1;
401
402 if (keccak_complete_i) begin
-9-
403 st_d = StMessage;
==>
404 end else begin
405 st_d = StMessageWait;
==>
406 end
407 end
408
409 // Pad state just pushes the ending suffix. Depending on the mode, the
410 // padding value is unique. SHA3 adds 2'b10, SHAKE adds 4'b1111, and
411 // cSHAKE adds 2'b 00. Refer `function_pad`. The signal has one more bit
412 // defined to accomodate first 1 bit of `pad10*1()` function.
413 StPad: begin
414 sel_mux = MuxFuncPad;
415
416 fsm_keccak_valid = 1'b 1;
417
418 if (keccak_ack && end_of_block) begin
-10-
419 // If padding is the last block, don't have to move to StPad01, just
420 // run Keccak and complete
421 st_d = StPadRun;
==>
422
423 // always clear the latched msgbuf
424 clr_msgbuf = 1'b 1;
425 clr_sentmsg = 1'b 1;
426 end else if (keccak_ack) begin
-11-
427 st_d = StPad01;
==>
428 clr_msgbuf = 1'b 1;
429 end else begin
430 st_d = StPad;
==>
431 end
432 end
433
434 StPadRun: begin
435 st_d = StPadFlush;
==>
436
437 keccak_run_o = 1'b 1;
438 clr_sentmsg = 1'b 1;
439 end
440
441 // Pad01 pushes the end bit of pad10*1() function. As keccak accepts byte
442 // size only, StPad always pushes partial (5bits). So at this state, it
443 // pushes rest of 3bits. If the data pushed in StPad is the last byte of
444 // the block, then Pad01 pushes to the same byte, if not, it first
445 // zero-fill the block then pad 1 to the end.
446 StPad01: begin
447 sel_mux = MuxZeroEnd;
448
449 // There's no chance StPad01 can be a start of the block. So can be
450 // discard that the sent_blocksize is set at the beginning.
451 if (sent_blocksize) begin
-12-
452 st_d = StPadFlush;
==>
453
454 fsm_keccak_valid = 1'b 0;
455 keccak_run_o = 1'b 1;
456 clr_sentmsg = 1'b 1;
457 end else begin
458 st_d = StPad01;
==>
459
460 fsm_keccak_valid = 1'b 1;
461 end
462 end
463
464 StPadFlush: begin
465 // Wait completion from keccak_round or wait SW indicator.
466 clr_sentmsg = 1'b 1;
467 clr_msgbuf = 1'b 1;
468
469 if (keccak_complete_i) begin
-13-
470 st_d = StPadIdle;
==>
471
472 absorbed_d = prim_mubi_pkg::MuBi4True;
473 end else begin
474 st_d = StPadFlush;
==>
475 end
476 end
477
478 StTerminalError: begin
479 // this state is terminal
480 st_d = st;
==>
481 sparse_fsm_error_o = 1'b 1;
482 end
483
484 default: begin
485 // this state is terminal
486 st_d = StTerminalError;
==>
Branches:
| -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | -12- | -13- | Status | Tests |
| StPadIdle |
1 |
1 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StPadIdle |
1 |
0 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T8,T18,T38 |
| StPadIdle |
0 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StPrefix |
- |
- |
1 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StPrefix |
- |
- |
0 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StPrefixWait |
- |
- |
- |
1 |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StPrefixWait |
- |
- |
- |
0 |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StMessage |
- |
- |
- |
- |
1 |
- |
- |
- |
- |
- |
- |
- |
Covered |
T1,T2,T8 |
| StMessage |
- |
- |
- |
- |
0 |
1 |
- |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StMessage |
- |
- |
- |
- |
0 |
0 |
1 |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StMessage |
- |
- |
- |
- |
0 |
0 |
0 |
- |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StMessageWait |
- |
- |
- |
- |
- |
- |
- |
1 |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StMessageWait |
- |
- |
- |
- |
- |
- |
- |
0 |
- |
- |
- |
- |
Covered |
T1,T2,T3 |
| StPad |
- |
- |
- |
- |
- |
- |
- |
- |
1 |
- |
- |
- |
Covered |
T38,T4,T44 |
| StPad |
- |
- |
- |
- |
- |
- |
- |
- |
0 |
1 |
- |
- |
Covered |
T1,T2,T3 |
| StPad |
- |
- |
- |
- |
- |
- |
- |
- |
0 |
0 |
- |
- |
Not Covered |
|
| StPadRun |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T38,T4,T44 |
| StPad01 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
1 |
- |
Covered |
T1,T2,T3 |
| StPad01 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
0 |
- |
Covered |
T1,T2,T3 |
| StPadFlush |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
1 |
Covered |
T1,T2,T3 |
| StPadFlush |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
0 |
Covered |
T1,T2,T3 |
| StTerminalError |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T9,T10,T11 |
| default |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Covered |
T10,T34,T37 |
494 if (lc_ctrl_pkg::lc_tx_test_true_loose(lc_escalate_en_i)) begin
-1-
495 st_d = StTerminalError;
==>
496 end
MISSING_ELSE
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T9,T10,T11 |
| 0 |
Covered |
T1,T2,T3 |
558 unique case (mode_i)
-1-
559 Sha3: funcpad = 5'b 00110;
==>
560 Shake: funcpad = 5'b 11111;
==>
561 CShake: funcpad = 5'b 00100;
==>
562
563 default: begin
564 // Just create non-padding but pad10*1 only
565 funcpad = 5'b 00001;
==>
Branches:
| -1- | Status | Tests |
| Sha3 |
Covered |
T1,T2,T3 |
| Shake |
Covered |
T39,T8,T18 |
| CShake |
Covered |
T1,T2,T3 |
| default |
Not Covered |
|
591 unique case (sel_mux)
-1-
592 MuxFifo: keccak_data_o = msg_data_i;
==>
593 MuxPrefix: keccak_data_o = prefix_data;
==>
594 MuxFuncPad: keccak_data_o = funcpad_data;
==>
595 MuxZeroEnd: keccak_data_o = zero_with_endbit;
==>
596
597 // MuxNone
598 default: keccak_data_o = '{default:'0};
==>
Branches:
| -1- | Status | Tests |
| MuxFifo |
Covered |
T1,T2,T3 |
| MuxPrefix |
Covered |
T1,T2,T3 |
| MuxFuncPad |
Covered |
T1,T2,T3 |
| MuxZeroEnd |
Covered |
T1,T2,T3 |
| default |
Covered |
T1,T2,T3 |
603 unique case (sel_mux)
-1-
604 MuxFifo: keccak_valid_o = msg_valid_i & ~hold_msg & ~en_msgbuf;
==>
605 MuxPrefix: keccak_valid_o = fsm_keccak_valid;
==>
606 MuxFuncPad: keccak_valid_o = fsm_keccak_valid;
==>
607 MuxZeroEnd: keccak_valid_o = fsm_keccak_valid;
==>
608
609 // MuxNone
610 default: keccak_valid_o = 1'b 0;
==>
Branches:
| -1- | Status | Tests |
| MuxFifo |
Covered |
T1,T2,T3 |
| MuxPrefix |
Covered |
T1,T2,T3 |
| MuxFuncPad |
Covered |
T1,T2,T3 |
| MuxZeroEnd |
Covered |
T1,T2,T3 |
| default |
Covered |
T1,T2,T3 |
615 unique case (sel_mux)
-1-
616 MuxFifo: msg_ready_o = en_msgbuf | (keccak_ready_i & ~hold_msg);
==>
617 MuxPrefix: msg_ready_o = 1'b 0;
==>
618 MuxFuncPad: msg_ready_o = 1'b 0;
==>
619 MuxZeroEnd: msg_ready_o = 1'b 0;
==>
620
621 // MuxNone
622 default: msg_ready_o = 1'b 0;
==>
Branches:
| -1- | Status | Tests |
| MuxFifo |
Covered |
T1,T2,T3 |
| MuxPrefix |
Covered |
T1,T2,T3 |
| MuxFuncPad |
Covered |
T1,T2,T3 |
| MuxZeroEnd |
Covered |
T1,T2,T3 |
| default |
Covered |
T1,T2,T3 |
664 if (!rst_ni) begin
-1-
665 msg_buf <= '{default:'0};
==>
666 msg_strb <= '0;
667 end else if (en_msgbuf) begin
-2-
668 for (int i = 0 ; i < Share ; i++) begin
==>
669 msg_buf[i] <= msg_data_i[i][0+:(MsgWidth-8)];
670 end
671 msg_strb <= msg_strb_i[0+:(MsgStrbW-1)];
672 end else if (clr_msgbuf) begin
-3-
673 msg_buf <= '{default:'0};
==>
674 msg_strb <= '0;
675 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | Status | Tests |
| 1 |
- |
- |
Covered |
T1,T2,T3 |
| 0 |
1 |
- |
Covered |
T1,T2,T8 |
| 0 |
0 |
1 |
Covered |
T1,T2,T3 |
| 0 |
0 |
0 |
Covered |
T1,T2,T3 |
779 if (!rst_ni) begin
-1-
780 start_valid <= 1'b 1;
==>
781 end else if (start_i) begin
-2-
782 start_valid <= 1'b 0;
==>
783 end else if (prim_mubi_pkg::mubi4_test_true_strict(done_i)) begin
-3-
784 start_valid <= 1'b 1;
==>
785 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | Status | Tests |
| 1 |
- |
- |
Covered |
T1,T2,T3 |
| 0 |
1 |
- |
Covered |
T1,T2,T3 |
| 0 |
0 |
1 |
Covered |
T1,T2,T3 |
| 0 |
0 |
0 |
Covered |
T1,T2,T3 |
788 if (!rst_ni) begin
-1-
789 process_valid <= 1'b 0;
==>
790 end else if (start_i) begin
-2-
791 process_valid <= 1'b 1;
==>
792 end else if (process_i) begin
-3-
793 process_valid <= 1'b 0;
==>
794 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | Status | Tests |
| 1 |
- |
- |
Covered |
T1,T2,T3 |
| 0 |
1 |
- |
Covered |
T1,T2,T3 |
| 0 |
0 |
1 |
Covered |
T1,T2,T3 |
| 0 |
0 |
0 |
Covered |
T1,T2,T3 |
798 if (!rst_ni) begin
-1-
799 done_valid <= 1'b 0;
==>
800 end else if (prim_mubi_pkg::mubi4_test_true_strict(absorbed_o)) begin
-2-
801 done_valid <= 1'b 1;
==>
802 end else if (prim_mubi_pkg::mubi4_test_true_strict(done_i)) begin
-3-
803 done_valid <= 1'b 0;
==>
804 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | Status | Tests |
| 1 |
- |
- |
Covered |
T1,T2,T3 |
| 0 |
1 |
- |
Covered |
T1,T2,T3 |
| 0 |
0 |
1 |
Covered |
T1,T2,T3 |
| 0 |
0 |
0 |
Covered |
T1,T2,T3 |
680 unique case (msg_strb)
-1-
681 7'b 000_0000: begin
682 funcpad_data[0] = '0;
==>
683 funcpad_data[1] = {end_of_block, 63'(funcpad) };
684 end
685 7'b 000_0001: begin
686 funcpad_data[0] = {56'h0, msg_buf[0][ 7:0]};
==>
687 funcpad_data[1] = {end_of_block, 55'(funcpad), msg_buf[1][ 7:0]};
688 end
689 7'b 000_0011: begin
690 funcpad_data[0] = {48'h0, msg_buf[0][15:0]};
==>
691 funcpad_data[1] = {end_of_block, 47'(funcpad), msg_buf[1][15:0]};
692 end
693 7'b 000_0111: begin
694 funcpad_data[0] = {40'h0, msg_buf[0][23:0]};
==>
695 funcpad_data[1] = {end_of_block, 39'(funcpad), msg_buf[1][23:0]};
696 end
697 7'b 000_1111: begin
698 funcpad_data[0] = {32'h0, msg_buf[0][31:0]};
==>
699 funcpad_data[1] = {end_of_block, 31'(funcpad), msg_buf[1][31:0]};
700 end
701 7'b 001_1111: begin
702 funcpad_data[0] = {24'h0, msg_buf[0][39:0]};
==>
703 funcpad_data[1] = {end_of_block, 23'(funcpad), msg_buf[1][39:0]};
704 end
705 7'b 011_1111: begin
706 funcpad_data[0] = {16'h0, msg_buf[0][47:0]};
==>
707 funcpad_data[1] = {end_of_block, 15'(funcpad), msg_buf[1][47:0]};
708 end
709 7'b 111_1111: begin
710 funcpad_data[0] = { 8'h0, msg_buf[0][55:0]};
==>
711 funcpad_data[1] = {end_of_block, 7'(funcpad), msg_buf[1][55:0]};
712 end
713
714 default: funcpad_data = '{default:'0};
==>
Branches:
| -1- | Status | Tests |
| 7'b0000000 |
Covered |
T1,T2,T3 |
| 7'b0000001 |
Covered |
T8,T38,T41 |
| 7'b0000011 |
Covered |
T1,T8,T38 |
| 7'b0000111 |
Covered |
T2,T18,T38 |
| 7'b0001111 |
Covered |
T38,T41,T57 |
| 7'b0011111 |
Covered |
T8,T18,T38 |
| 7'b0111111 |
Covered |
T1,T18,T38 |
| 7'b1111111 |
Covered |
T2,T8,T38 |
| default |
Not Covered |
|
Assert Coverage for Instance : tb.dut.u_sha3.u_pad
Assertion Details
AbsorbedPulse_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
55181 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
3 |
0 |
0 |
| T4 |
160720 |
43 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
0 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
0 |
| T38 |
81290 |
73 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
125 |
0 |
0 |
| T47 |
0 |
92 |
0 |
0 |
| T57 |
0 |
100 |
0 |
0 |
AlwaysPartialMsgBuf_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
43280 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
0 |
0 |
0 |
| T4 |
160720 |
0 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
0 |
0 |
0 |
| T18 |
15599 |
3 |
0 |
0 |
| T38 |
81290 |
63 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
115 |
0 |
0 |
| T47 |
0 |
75 |
0 |
0 |
| T48 |
0 |
3 |
0 |
0 |
| T57 |
0 |
87 |
0 |
0 |
| T70 |
0 |
3 |
0 |
0 |
CompleteBlockWhenProcess_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
52708 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
3 |
0 |
0 |
| T4 |
160720 |
38 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
0 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
0 |
| T38 |
81290 |
64 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
125 |
0 |
0 |
| T47 |
0 |
92 |
0 |
0 |
| T57 |
0 |
100 |
0 |
0 |
DoneCondition_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
55178 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
3 |
0 |
0 |
| T4 |
160720 |
43 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
0 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
0 |
| T38 |
81290 |
73 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
125 |
0 |
0 |
| T47 |
0 |
92 |
0 |
0 |
| T57 |
0 |
100 |
0 |
0 |
DonePulse_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
55178 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
3 |
0 |
0 |
| T4 |
160720 |
43 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
0 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
0 |
| T38 |
81290 |
73 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
125 |
0 |
0 |
| T47 |
0 |
92 |
0 |
0 |
| T57 |
0 |
100 |
0 |
0 |
KeccakAddrInRange_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
13653552 |
0 |
0 |
| T1 |
2466 |
210 |
0 |
0 |
| T2 |
6031 |
210 |
0 |
0 |
| T3 |
17726 |
153 |
0 |
0 |
| T4 |
160720 |
3924 |
0 |
0 |
| T8 |
39865 |
854 |
0 |
0 |
| T9 |
6168 |
34 |
0 |
0 |
| T18 |
15599 |
363 |
0 |
0 |
| T38 |
81290 |
666 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
5692 |
0 |
0 |
| T57 |
0 |
4427 |
0 |
0 |
KeccakRunPulse_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
740832 |
0 |
0 |
| T1 |
2466 |
10 |
0 |
0 |
| T2 |
6031 |
10 |
0 |
0 |
| T3 |
17726 |
9 |
0 |
0 |
| T4 |
160720 |
204 |
0 |
0 |
| T8 |
39865 |
46 |
0 |
0 |
| T9 |
6168 |
2 |
0 |
0 |
| T18 |
15599 |
19 |
0 |
0 |
| T38 |
81290 |
74 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
309 |
0 |
0 |
| T57 |
0 |
235 |
0 |
0 |
MessageCondition_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
12397549 |
0 |
0 |
| T1 |
2466 |
91 |
0 |
0 |
| T2 |
6031 |
91 |
0 |
0 |
| T3 |
17726 |
51 |
0 |
0 |
| T4 |
160720 |
2640 |
0 |
0 |
| T8 |
39865 |
694 |
0 |
0 |
| T9 |
6168 |
17 |
0 |
0 |
| T18 |
15599 |
296 |
0 |
0 |
| T38 |
81290 |
360 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
2035 |
0 |
0 |
| T57 |
0 |
1567 |
0 |
0 |
ModeStableDuringOp_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
32882 |
0 |
0 |
| T1 |
2466 |
1 |
0 |
0 |
| T2 |
6031 |
1 |
0 |
0 |
| T3 |
17726 |
4 |
0 |
0 |
| T4 |
160720 |
194 |
0 |
0 |
| T8 |
39865 |
9 |
0 |
0 |
| T9 |
6168 |
1 |
0 |
0 |
| T18 |
15599 |
3 |
0 |
0 |
| T38 |
81290 |
0 |
0 |
0 |
| T39 |
1993 |
4 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
53 |
0 |
0 |
| T57 |
0 |
52 |
0 |
0 |
MsgReadyCondition_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
370112860 |
0 |
0 |
| T1 |
2466 |
341 |
0 |
0 |
| T2 |
6031 |
1581 |
0 |
0 |
| T3 |
17726 |
13595 |
0 |
0 |
| T4 |
160720 |
49237 |
0 |
0 |
| T8 |
39865 |
31091 |
0 |
0 |
| T9 |
6168 |
17 |
0 |
0 |
| T18 |
15599 |
3790 |
0 |
0 |
| T38 |
81290 |
25107 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
12393 |
0 |
0 |
| T57 |
0 |
3742 |
0 |
0 |
MsgWidthidth_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
672 |
672 |
0 |
0 |
| T1 |
1 |
1 |
0 |
0 |
| T2 |
1 |
1 |
0 |
0 |
| T3 |
1 |
1 |
0 |
0 |
| T4 |
1 |
1 |
0 |
0 |
| T8 |
1 |
1 |
0 |
0 |
| T9 |
1 |
1 |
0 |
0 |
| T18 |
1 |
1 |
0 |
0 |
| T38 |
1 |
1 |
0 |
0 |
| T39 |
1 |
1 |
0 |
0 |
| T40 |
1 |
1 |
0 |
0 |
NoPartialMsgFifo_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
12354269 |
0 |
0 |
| T1 |
2466 |
88 |
0 |
0 |
| T2 |
6031 |
88 |
0 |
0 |
| T3 |
17726 |
51 |
0 |
0 |
| T4 |
160720 |
2640 |
0 |
0 |
| T8 |
39865 |
687 |
0 |
0 |
| T9 |
6168 |
17 |
0 |
0 |
| T18 |
15599 |
293 |
0 |
0 |
| T38 |
81290 |
297 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
1920 |
0 |
0 |
| T57 |
0 |
1480 |
0 |
0 |
Pad01NotAttheEndOfBlock_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
53080 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
3 |
0 |
0 |
| T4 |
160720 |
40 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
0 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
0 |
| T38 |
81290 |
65 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
125 |
0 |
0 |
| T47 |
0 |
92 |
0 |
0 |
| T57 |
0 |
100 |
0 |
0 |
PartialEndOfMsg_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
43280 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
0 |
0 |
0 |
| T4 |
160720 |
0 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
0 |
0 |
0 |
| T18 |
15599 |
3 |
0 |
0 |
| T38 |
81290 |
63 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
115 |
0 |
0 |
| T47 |
0 |
75 |
0 |
0 |
| T48 |
0 |
3 |
0 |
0 |
| T57 |
0 |
87 |
0 |
0 |
| T70 |
0 |
3 |
0 |
0 |
PrefixLessThanBlock_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
672 |
672 |
0 |
0 |
| T1 |
1 |
1 |
0 |
0 |
| T2 |
1 |
1 |
0 |
0 |
| T3 |
1 |
1 |
0 |
0 |
| T4 |
1 |
1 |
0 |
0 |
| T8 |
1 |
1 |
0 |
0 |
| T9 |
1 |
1 |
0 |
0 |
| T18 |
1 |
1 |
0 |
0 |
| T38 |
1 |
1 |
0 |
0 |
| T39 |
1 |
1 |
0 |
0 |
| T40 |
1 |
1 |
0 |
0 |
ProcessCondition_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
55205 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
3 |
0 |
0 |
| T4 |
160720 |
43 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
0 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
0 |
| T38 |
81290 |
73 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
125 |
0 |
0 |
| T47 |
0 |
92 |
0 |
0 |
| T57 |
0 |
100 |
0 |
0 |
ProcessPulse_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
55205 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
3 |
0 |
0 |
| T4 |
160720 |
43 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
0 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
0 |
| T38 |
81290 |
73 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
125 |
0 |
0 |
| T47 |
0 |
92 |
0 |
0 |
| T57 |
0 |
100 |
0 |
0 |
StartCondition_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
55255 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
3 |
0 |
0 |
| T4 |
160720 |
43 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
1 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
0 |
| T38 |
81290 |
73 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
125 |
0 |
0 |
| T57 |
0 |
100 |
0 |
0 |
StartProcessDoneMutex_a
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
578396025 |
0 |
0 |
| T1 |
2466 |
2379 |
0 |
0 |
| T2 |
6031 |
5933 |
0 |
0 |
| T3 |
17726 |
17676 |
0 |
0 |
| T4 |
160720 |
160658 |
0 |
0 |
| T8 |
39865 |
39771 |
0 |
0 |
| T9 |
6168 |
6036 |
0 |
0 |
| T18 |
15599 |
15503 |
0 |
0 |
| T38 |
81290 |
81206 |
0 |
0 |
| T39 |
1993 |
1909 |
0 |
0 |
| T40 |
1068 |
971 |
0 |
0 |
StartPulse_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
55255 |
0 |
0 |
| T1 |
2466 |
3 |
0 |
0 |
| T2 |
6031 |
3 |
0 |
0 |
| T3 |
17726 |
3 |
0 |
0 |
| T4 |
160720 |
43 |
0 |
0 |
| T8 |
39865 |
7 |
0 |
0 |
| T9 |
6168 |
1 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
0 |
| T38 |
81290 |
73 |
0 |
0 |
| T39 |
1993 |
0 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
0 |
| T41 |
0 |
125 |
0 |
0 |
| T57 |
0 |
100 |
0 |
0 |
StrengthStableDuringOp_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
39176 |
0 |
0 |
| T1 |
2466 |
1 |
0 |
0 |
| T2 |
6031 |
1 |
0 |
0 |
| T3 |
17726 |
8 |
0 |
0 |
| T4 |
160720 |
208 |
0 |
0 |
| T8 |
39865 |
8 |
0 |
0 |
| T9 |
6168 |
3 |
0 |
0 |
| T18 |
15599 |
6 |
0 |
0 |
| T38 |
81290 |
2 |
0 |
0 |
| T39 |
1993 |
6 |
0 |
0 |
| T40 |
1068 |
1 |
0 |
0 |
u_state_regs_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
578552030 |
578396025 |
0 |
0 |
| T1 |
2466 |
2379 |
0 |
0 |
| T2 |
6031 |
5933 |
0 |
0 |
| T3 |
17726 |
17676 |
0 |
0 |
| T4 |
160720 |
160658 |
0 |
0 |
| T8 |
39865 |
39771 |
0 |
0 |
| T9 |
6168 |
6036 |
0 |
0 |
| T18 |
15599 |
15503 |
0 |
0 |
| T38 |
81290 |
81206 |
0 |
0 |
| T39 |
1993 |
1909 |
0 |
0 |
| T40 |
1068 |
971 |
0 |
0 |
Cover Directives for Properties: Details
StComplete_C
| Name | Attempts | Matches | Incomplete |
| Total |
578552030 |
5356321 |
0 |
| T1 |
2466 |
291 |
0 |
| T2 |
6031 |
291 |
0 |
| T3 |
17726 |
291 |
0 |
| T4 |
160720 |
4171 |
0 |
| T8 |
39865 |
679 |
0 |
| T9 |
6168 |
0 |
0 |
| T18 |
15599 |
485 |
0 |
| T38 |
81290 |
7081 |
0 |
| T39 |
1993 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
| T41 |
0 |
12125 |
0 |
| T47 |
0 |
8924 |
0 |
| T57 |
0 |
9700 |
0 |
StMessageFeed_C
| Name | Attempts | Matches | Incomplete |
| Total |
578552030 |
370818432 |
0 |
| T1 |
2466 |
348 |
0 |
| T2 |
6031 |
1588 |
0 |
| T3 |
17726 |
13601 |
0 |
| T4 |
160720 |
49398 |
0 |
| T8 |
39865 |
31132 |
0 |
| T9 |
6168 |
18 |
0 |
| T18 |
15599 |
3808 |
0 |
| T38 |
81290 |
25181 |
0 |
| T39 |
1993 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
| T41 |
0 |
12610 |
0 |
| T57 |
0 |
3910 |
0 |
StPadSendMsg_C
| Name | Attempts | Matches | Incomplete |
| Total |
578552030 |
582727 |
0 |
| T1 |
2466 |
56 |
0 |
| T2 |
6031 |
56 |
0 |
| T3 |
17726 |
48 |
0 |
| T4 |
160720 |
406 |
0 |
| T8 |
39865 |
67 |
0 |
| T9 |
6168 |
0 |
0 |
| T18 |
15599 |
48 |
0 |
| T38 |
81290 |
296 |
0 |
| T39 |
1993 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
| T41 |
0 |
1927 |
0 |
| T47 |
0 |
1393 |
0 |
| T57 |
0 |
1560 |
0 |
StPad_C
| Name | Attempts | Matches | Incomplete |
| Total |
578552030 |
53079 |
0 |
| T1 |
2466 |
3 |
0 |
| T2 |
6031 |
3 |
0 |
| T3 |
17726 |
3 |
0 |
| T4 |
160720 |
40 |
0 |
| T8 |
39865 |
7 |
0 |
| T9 |
6168 |
0 |
0 |
| T18 |
15599 |
5 |
0 |
| T38 |
81290 |
65 |
0 |
| T39 |
1993 |
0 |
0 |
| T40 |
1068 |
0 |
0 |
| T41 |
0 |
125 |
0 |
| T47 |
0 |
92 |
0 |
| T57 |
0 |
100 |
0 |