Module Definition
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Module Instance : tb.dut.u_passthrough

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
90.17 94.50 88.66 75.00 92.71 100.00


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
90.54 94.95 89.22 75.00 93.52 100.00


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
92.52 95.20 84.31 97.00 90.62 95.45 dut


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
u_pt_sck_cg 100.00 100.00 100.00 100.00
u_read_half_cycle 100.00 100.00 100.00
u_read_pipe_oe_stg1 100.00 100.00 100.00
u_read_pipe_oe_stg2 100.00 100.00 100.00
u_read_pipe_stg1 100.00 100.00 100.00
u_read_pipe_stg2 100.00 100.00 100.00


Since this is the module's only instance, the coverage report is the same as for the module.
Line Coverage for Module : spi_passthrough
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270 logic is_active; 271 1/1 assign is_active = (spi_mode_i == PassThrough); Tests: T1 T2 T3  272 273 logic [7:0] opcode, opcode_d; 274 275 logic unused_opcode_7; 276 1/1 assign unused_opcode_7 = opcode[7]; Tests: T1 T2 T3  277 278 // If the filter becomes 1 on the 8th beat, it lowers SCK enable signal to CG 279 // cell then, at the 8th posedge of SCK, csb_deassert becomes 1. 280 // ____ ____ ____ 281 // SCK ____/ 7 \____/ 8 \____/ 282 // ___ 283 // filter _______/XXXXXX/ \______________ 284 // ______________ 285 // sck_gate_en \__________________ 286 // ______________ 287 // csb_deassert __________________/ 288 logic filter; 289 290 // If 1, SCK propagates to the downstream SPI Flash device. 291 logic sck_gate_en; 292 293 // CSb to the downstream device control If 1, CSb is de-asserted. This signal 294 // is glitch sensitive. This value is changed at SCK posedge. This does not 295 // drive CSb output directly. CSb to downstream is OR-ed with this and CSb 296 // from host system. 297 // 298 // `cdb_deassert` should be latched at the posedge of SCK. `filter` signal is 299 // computed in between the 7th posedge of SCK and the 8th posedge. As the 300 // command bit does not arrive until the 7th negedge of SCK, the filter signal 301 // is not valid in the first half of the period. By latching the filter signal 302 // at the posedge of the SCK, csb_deassert always shows correct value if the 303 // command needs to be filtered or not. 304 // 305 // However, the CSb output to the downstream flash device is better to be in 306 // the out clock domain. It helps the design constraints to be simpler. So, 307 // the `csb_deassert` is again latched at the outclk (which is the negedge of 308 // SCK). 309 logic csb_deassert; 310 logic csb_deassert_outclk; 311 312 // == BEGIN: Counters ====================================================== 313 // bitcnt to count up to dummy 314 localparam int unsigned MetaMaxBeat = 8+32+8; // Cmd + Addr + Dummy 315 localparam int unsigned MetaBitCntW = $clog2(MetaMaxBeat); 316 logic [MetaBitCntW-1:0] bitcnt; 317 318 // Address or anything host driving after opcode counter 319 logic [AddrCntW-1:0] addrcnt_outclk; 320 321 // Dummy counter 322 logic [DummyCntW-1:0] dummycnt, dummycnt_d; 323 // -- END: Counters ------------------------------------------------------ 324 325 // event 326 1/1 assign event_cmd_filtered_o = filter; Tests: T1 T2 T3  327 328 ////////////// 329 // Datapath // 330 ////////////// 331 332 // Opcode Latch 333 1/1 assign opcode_d = {opcode[6:0], host_s_i[0]}; Tests: T1 T2 T3  334 335 always_ff @(posedge clk_i or negedge rst_ni) begin 336 1/1 if (!rst_ni) begin Tests: T1 T2 T3  337 1/1 opcode <= 8'h 00; Tests: T1 T2 T3  338 1/1 end else if (bitcnt < MetaBitCntW'(8)) begin Tests: T6 T7 T9  339 1/1 opcode <= opcode_d; Tests: T6 T7 T9  340 end MISSING_ELSE 341 end 342 343 // Command Filter: CSb control 344 always_ff @(posedge clk_i or negedge rst_ni) begin 345 2/2 if (!rst_ni) csb_deassert <= 1'b 0; Tests: T1 T2 T3  | T1 T2 T3  346 2/2 else if (filter) csb_deassert <= 1'b 1; Tests: T6 T7 T9  | T6 T7 T9  MISSING_ELSE 347 end 348 always_ff @(posedge clk_out_i or negedge rst_out_ni) begin 349 2/2 if (!rst_out_ni) csb_deassert_outclk <= 1'b 0; Tests: T1 T2 T3  | T1 T2 T3  350 1/1 else csb_deassert_outclk <= csb_deassert; Tests: T6 T7 T9  351 end 352 353 // Look at the waveform above to see why sck_gate_en is inversion of fliter OR 354 // csb_deassert 355 1/1 assign sck_gate_en = ~(filter | csb_deassert); Tests: T1 T2 T3  356 357 // Bitcnt counter 358 /// Bitcnt increases until it hit the max value then wait reset. 359 always_ff @(posedge clk_i or negedge rst_ni) begin 360 1/1 if (!rst_ni) begin Tests: T1 T2 T3  361 1/1 bitcnt <= '0; Tests: T1 T2 T3  362 1/1 end else if (bitcnt != '1) begin Tests: T6 T7 T9  363 1/1 bitcnt <= bitcnt + MetaBitCntW'(1); Tests: T6 T7 T9  364 end MISSING_ELSE 365 end 366 367 // Latch only two bits at 7th cmd opcode 368 logic cmd_7th; // 7th beat of transaction 369 logic cmd_8th; // in 8th beat of transaction 370 logic [1:0] cmd_filter; 371 372 1/1 assign cmd_7th = (bitcnt == MetaBitCntW'(6)); Tests: T1 T2 T3  373 1/1 assign cmd_8th = (bitcnt == MetaBitCntW'(7)); Tests: T1 T2 T3  374 375 always_ff @(posedge clk_i or negedge rst_ni) begin 376 1/1 if (!rst_ni) begin Tests: T1 T2 T3  377 1/1 cmd_filter <= 2'b 00; Tests: T1 T2 T3  378 1/1 end else if (cmd_7th) begin Tests: T6 T7 T9  379 // In this 7th beat, cmd_filter latches 2 bits from cfg_cmd_filter_i 380 // This reduces the last filter datapath from muxing 256 to just mux2 381 // 382 // If below syntax does not work, it can be replaced with 383 // for (int unsigned i = 0 ; i < 128 ; i++) begin 384 // it (i == opcode[6:0]) cmd_filter <= cfg_cmd_filter_i[2*i+:2]; 385 // end 386 1/1 cmd_filter <= cfg_cmd_filter_i[{opcode_d[6:0],1'b0}+:2]; Tests: T6 T7 T9  387 end MISSING_ELSE 388 end 389 390 // Command Info Latch 391 cmd_info_t cmd_info, cmd_info_d; 392 cmd_info_t [1:0] cmd_info_7th, cmd_info_7th_d; 393 394 logic [AddrCntW-1:0] addr_size_d; 395 396 logic cmd_info_latch; 397 398 // Search opcode @ 7th opcode 399 always_comb begin 400 1/1 cmd_info_7th_d = {CmdInfoInput, CmdInfoInput}; Tests: T1 T2 T3  401 1/1 if (cmd_7th) begin Tests: T1 T2 T3  402 1/1 for(int unsigned i = 0 ; i < NumTotalCmdInfo ; i++) begin Tests: T6 T7 T9  403 1/1 if (cmd_info_i[i].valid) begin Tests: T6 T7 T9  404 1/1 if (cmd_info_i[i].opcode == {opcode_d[6:0], 1'b1}) begin Tests: T6 T7 T9  405 1/1 cmd_info_7th_d[1] = cmd_info_i[i]; Tests: T6 T7 T9  406 1/1 end else if (cmd_info_i[i].opcode == {opcode_d[6:0], 1'b0}) begin Tests: T6 T7 T9  407 1/1 cmd_info_7th_d[0] = cmd_info_i[i]; Tests: T13 T17 T18  408 end MISSING_ELSE 409 end // cmd_info_i[i].valid MISSING_ELSE 410 end 411 end MISSING_ELSE 412 end 413 always_ff @(posedge clk_i or negedge rst_ni) begin 414 1/1 if (!rst_ni) begin Tests: T1 T2 T3  415 1/1 cmd_info_7th <= '0; Tests: T1 T2 T3  416 1/1 end else if (cmd_7th) begin Tests: T6 T7 T9  417 // Search two candidate among NumCmdInfo. If only one matched, other 418 // cmd_info is Always Input command. 419 1/1 cmd_info_7th <= cmd_info_7th_d; Tests: T6 T7 T9  420 //cmd_info_7th <= {PassThroughCmdInfo[{opcode_d[6:0],1'b1}], 421 // PassThroughCmdInfo[{opcode_d[6:0],1'b0}]}; 422 end MISSING_ELSE 423 end 424 always_ff @(posedge clk_i or negedge rst_ni) begin 425 1/1 if (!rst_ni) begin Tests: T1 T2 T3  426 1/1 cmd_info <= '0; Tests: T1 T2 T3  427 1/1 end else if (cmd_info_latch) begin Tests: T6 T7 T9  428 // Latch only two cmd_info when the 7th bit arrives. Then select among two 429 // at the 8th beat for cmd_info_d to reduce timing. 430 1/1 cmd_info <= cmd_info_d; Tests: T6 T7 T9  431 end MISSING_ELSE 432 end 433 434 // Some of the fields of cmd_info are used in the big FSM below. The opcode field and the addr_* 435 // fields are ignored because we pick them from cmd_info_d instead (in a different FSM state). We 436 // rely on the synthesis tool not to generate the unneeded flops but must explicitly waive lint 437 // warnings about unused fields. 438 logic unused_cmd_info_fields; 439 unreachable assign unused_cmd_info_fields = &{ 440 1'b0, 441 cmd_info.valid, // valid bit is checked before latching into cmd_info 442 cmd_info.opcode, 443 cmd_info.opcode, 444 cmd_info.upload, 445 cmd_info.busy 446 }; 447 448 always_comb begin 449 1/1 cmd_info_d = '0; Tests: T1 T2 T3  450 451 1/1 if (cmd_8th) begin Tests: T1 T2 T3  452 // Latch only two cmd_info when the 7th bit arrives. Then select among two 453 // at the 8th beat for cmd_info_d to reduce timing. 454 1/1 cmd_info_d = cmd_info_7th[host_s_i[0]]; Tests: T6 T7 T9  455 456 1/1 cmd_info_d.opcode = opcode_d; Tests: T6 T7 T9  457 458 // dummy_size is set inside State Machine 459 end MISSING_ELSE 460 end 461 462 addr_mode_e addr_mode; 463 1/1 assign addr_mode = get_addr_mode(cmd_info.addr_mode, cfg_addr_4b_en_i); Tests: T1 T2 T3  464 465 always_comb begin 466 1/1 addr_size_d = AddrCntW'(23); Tests: T1 T2 T3  467 1/1 if (addr_mode == Addr4B) begin Tests: T1 T2 T3  468 1/1 addr_size_d = AddrCntW'(31); Tests: T7 T9 T18  469 end MISSING_ELSE 470 end 471 472 // Address swap 473 logic addr_set_d, addr_set_q; 474 logic addr_phase, addr_phase_outclk; 475 1/1 assign addr_phase = (st == StAddress); Tests: T1 T2 T3  476 477 always_ff @(posedge clk_i or negedge rst_ni) begin 478 1/1 if (!rst_ni) begin Tests: T1 T2 T3  479 1/1 addr_set_q <= '0; Tests: T1 T2 T3  480 end else begin 481 1/1 addr_set_q <= addr_set_d; Tests: T6 T7 T9  482 end 483 end 484 485 always_ff @(posedge clk_out_i or negedge rst_out_ni) begin 486 1/1 if (!rst_out_ni) begin Tests: T1 T2 T3  487 1/1 addrcnt_outclk <= '0; Tests: T1 T2 T3  488 1/1 end else if (addr_set_q) begin Tests: T6 T7 T9  489 1/1 addrcnt_outclk <= addr_size_d; Tests: T6 T7 T9  490 1/1 end else if (addrcnt_outclk != '0) begin Tests: T6 T7 T9  491 1/1 addrcnt_outclk <= addrcnt_outclk - AddrCntW'(1); Tests: T6 T7 T9  492 end MISSING_ELSE 493 end 494 495 // Based on AddrCnt, the logic swap. 496 logic addr_swap; 497 1/1 assign addr_swap = cfg_addr_mask_i[addrcnt_outclk] Tests: T1 T2 T3  498 ? cfg_addr_value_i[addrcnt_outclk] 499 : host_s_i[0]; 500 501 // Address swap should happen in outclk domain. 502 // The state machine operates in inclk domain. 503 // The state generates mux selection signal. 504 // The signal latched in outclk domain then activates the mux. 505 always_ff @(posedge clk_out_i or negedge rst_out_ni) begin 506 2/2 if (!rst_out_ni) addr_phase_outclk <= 1'b 0; Tests: T1 T2 T3  | T1 T2 T3  507 1/1 else addr_phase_outclk <= addr_phase; Tests: T6 T7 T9  508 end 509 510 // Payload (4 bytes) swap 511 logic [4:0] payloadcnt, payloadcnt_outclk; 512 logic payload_replace, payload_replace_outclk; 513 logic payload_replace_set, payload_replace_clr; 514 515 // payload counter 516 // 517 // Reset to 'd31. decrease by 1 in every inclk. Stop at 0 then 518 // payload_replace is cleared. 519 always_ff @(posedge clk_i or negedge rst_ni) begin 520 1/1 if (!rst_ni) begin Tests: T1 T2 T3  521 1/1 payloadcnt <= 5'h 1F; Tests: T1 T2 T3  522 1/1 end else if ((payloadcnt != '0) && payload_replace) begin Tests: T6 T7 T9  523 1/1 payloadcnt <= payloadcnt - 1'b 1; Tests: T6 T18 T44  524 end MISSING_ELSE 525 end 526 527 always_ff @(posedge clk_out_i or negedge rst_out_ni) begin 528 2/2 if (!rst_out_ni) payloadcnt_outclk <= 5'h 1F; Tests: T1 T2 T3  | T1 T2 T3  529 1/1 else payloadcnt_outclk <= payloadcnt; Tests: T6 T7 T9  530 end 531 532 always_ff @(posedge clk_i or negedge rst_ni) begin 533 2/2 if (!rst_ni) payload_replace <= 1'b 0; Tests: T1 T2 T3  | T1 T2 T3  534 2/2 else if (payload_replace_set) payload_replace <= 1'b 1; Tests: T6 T7 T9  | T6 T17 T18  535 2/2 else if (payload_replace_clr) payload_replace <= 1'b 0; Tests: T6 T7 T9  | T6 T18 T44  MISSING_ELSE 536 end 537 538 always_ff @(posedge clk_out_i or negedge rst_out_ni) begin 539 2/2 if (!rst_out_ni) payload_replace_outclk <= 1'b 0; Tests: T1 T2 T3  | T1 T2 T3  540 1/1 else payload_replace_outclk <= payload_replace; Tests: T6 T7 T9  541 end 542 543 1/1 assign payload_replace_clr = (payloadcnt == '0); Tests: T1 T2 T3  544 // FSM drives payload_replace_set : assert when st moves to StDriving 545 logic payload_swap; 546 1/1 assign payload_swap = cfg_payload_mask_i[payloadcnt_outclk] Tests: T1 T2 T3  547 ? cfg_payload_data_i[payloadcnt_outclk] 548 : host_s_i[0] ; 549 550 // SPI swap (merging Addr & Payload) 551 logic swap_en, swap_data, addr_swap_en, payload_swap_en; 552 553 // Latch cmd_info config signals in output clock. 554 // cmd_info structure is latched in input clock. But addr_swap_en and 555 // payload_swap_en affects the output path (from host to the downstream flash 556 // device). as the output delay is bigger than the half of SCK, these paths 557 // violates timing regardless of the path delay. By latching the configs 558 // into output clock (inverted SCK), it alleviates the timing budget. 559 logic cmd_info_addr_swap_en_outclk, cmd_info_payload_swap_en_outclk; 560 always_ff @(posedge clk_out_i or negedge rst_out_ni) begin 561 1/1 if (!rst_out_ni) begin Tests: T1 T2 T3  562 1/1 cmd_info_addr_swap_en_outclk <= 1'b 0; Tests: T1 T2 T3  563 1/1 cmd_info_payload_swap_en_outclk <= 1'b 0; Tests: T1 T2 T3  564 end else begin 565 1/1 cmd_info_addr_swap_en_outclk <= cmd_info.addr_swap_en; Tests: T6 T7 T9  566 1/1 cmd_info_payload_swap_en_outclk <= cmd_info.payload_swap_en; Tests: T6 T7 T9  567 end 568 end 569 570 1/1 assign addr_swap_en = addr_phase_outclk Tests: T1 T2 T3  571 & cmd_info_addr_swap_en_outclk; 572 1/1 assign payload_swap_en = payload_replace_outclk Tests: T1 T2 T3  573 & cmd_info_payload_swap_en_outclk; 574 575 1/1 assign swap_en = addr_swap_en | payload_swap_en ; Tests: T1 T2 T3  576 1/1 assign swap_data = (addr_swap_en) ? addr_swap : payload_swap ; Tests: T1 T2 T3  577 578 // Dummy Counter 579 logic dummy_set; 580 logic dummycnt_zero; 581 always_ff @(posedge clk_i or negedge rst_ni) begin 582 2/2 if (!rst_ni) dummycnt <= '0; Tests: T1 T2 T3  | T1 T2 T3  583 1/1 else if (dummy_set) begin Tests: T6 T7 T9  584 1/1 dummycnt <= dummycnt_d; Tests: T6 T7 T9  585 1/1 end else if (st == StHighZ) begin Tests: T6 T7 T9  586 1/1 dummycnt <= dummycnt - 1'b 1; Tests: T6 T7 T9  587 end MISSING_ELSE 588 end 589 1/1 assign dummycnt_zero = (dummycnt == '0); Tests: T1 T2 T3  590 591 // MByte counter 592 logic mbyte_set; 593 logic mbytecnt_zero; 594 logic [1:0] mbyte_cnt; 595 always_ff @(posedge clk_i or negedge rst_ni) begin 596 1/1 if (!rst_ni) begin Tests: T1 T2 T3  597 1/1 mbyte_cnt <= '0; Tests: T1 T2 T3  598 1/1 end else if (mbyte_set) begin Tests: T6 T7 T9  599 0/1 ==> mbyte_cnt <= 2'h 3; 600 1/1 end else if (st == StMByte) begin Tests: T6 T7 T9  601 0/1 ==> mbyte_cnt <= mbyte_cnt - 1'b 1; 602 end MISSING_ELSE 603 end 604 1/1 assign mbytecnt_zero = (mbyte_cnt == '0); Tests: T1 T2 T3  605 606 // = BEGIN: Passthrough Mux (!important) ==================================== 607 608 // As swap_en is in outclk domain, addr_swap can be directly used. 609 1/1 assign passthrough_o.s = (swap_en) ? {host_s_i[3:1], swap_data} : host_s_i ; Tests: T1 T2 T3  610 611 logic [3:0] passthrough_s_en; 612 always_ff @(posedge clk_out_i or negedge rst_out_ni) begin 613 2/2 if (!rst_out_ni) passthrough_s_en <= 4'h 1; // S[0] active by default Tests: T1 T2 T3  | T1 T2 T3  614 1/1 else passthrough_s_en <= device_s_en_inclk; Tests: T6 T7 T9  615 end 616 1/1 assign passthrough_o.s_en = passthrough_s_en; Tests: T1 T2 T3  617 618 // 2-stage pipeline for high-throughput read commands 619 logic [3:0] half_cycle_sampled_sd; 620 logic [3:0] read_pipeline_stg1_d, read_pipeline_stg1_q; 621 logic [3:0] read_pipeline_stg2_d, read_pipeline_stg2_q; 622 logic [3:0] host_s_en_muxed; 623 logic [3:0] read_pipeline_oe_stg1_d, read_pipeline_oe_stg1_q; 624 logic [3:0] read_pipeline_oe_stg2_d, read_pipeline_oe_stg2_q; 625 626 // Sample on the ordinary capture edge, in case half-cycle sampling is 627 // selected. This flop samples data that is to be prepared for a later 628 // launch edge, in a sort of store-and-forward setup. 629 prim_flop #( 630 .Width ($bits(passthrough_i.s)), 631 .ResetValue ('0) 632 ) u_read_half_cycle ( 633 .clk_i (clk_i), 634 .rst_ni, 635 .d_i (passthrough_i.s), 636 .q_o (half_cycle_sampled_sd) 637 ); 638 639 // This flop begins the 2-stage pipeline on clk_out_i, the launch clock for 640 // data output. The input data is either the combinatorial input from the 641 // pad connected to the downstream SPI flash, or it is the output of the 642 // u_read_half_cycle flop above, which sampled the data on the capture edge 643 // that occurred a half cycle earlier. 644 prim_flop #( 645 .Width ($bits(read_pipeline_stg1_d)), 646 .ResetValue ('0) 647 ) u_read_pipe_stg1 ( 648 .clk_i (clk_out_i), 649 .rst_ni (rst_out_ni), 650 .d_i (read_pipeline_stg1_d), 651 .q_o (read_pipeline_stg1_q) 652 ); 653 654 prim_flop #( 655 .Width ($bits(read_pipeline_stg2_d)), 656 .ResetValue ('0) 657 ) u_read_pipe_stg2 ( 658 .clk_i (clk_out_i), 659 .rst_ni (rst_out_ni), 660 .d_i (read_pipeline_stg2_d), 661 .q_o (read_pipeline_stg2_q) 662 ); 663 664 prim_flop #( 665 .Width ($bits(read_pipeline_oe_stg1_d)), 666 .ResetValue ('0) 667 ) u_read_pipe_oe_stg1 ( 668 .clk_i (clk_out_i), 669 .rst_ni (rst_out_ni), 670 .d_i (read_pipeline_oe_stg1_d), 671 .q_o (read_pipeline_oe_stg1_q) 672 ); 673 674 prim_flop #( 675 .Width ($bits(read_pipeline_oe_stg2_d)), 676 .ResetValue ('0) 677 ) u_read_pipe_oe_stg2 ( 678 .clk_i (clk_out_i), 679 .rst_ni (rst_out_ni), 680 .d_i (read_pipeline_oe_stg2_d), 681 .q_o (read_pipeline_oe_stg2_q) 682 ); 683 684 always_comb begin 685 1/1 host_s_o = passthrough_i.s; Tests: T1 T2 T3  686 1/1 read_pipeline_stg2_d = read_pipeline_stg1_q; Tests: T1 T2 T3  687 1/1 read_pipeline_stg1_d = half_cycle_sampled_sd; Tests: T1 T2 T3  688 689 1/1 host_s_en_muxed = host_s_en_inclk; Tests: T1 T2 T3  690 1/1 read_pipeline_oe_stg2_d = read_pipeline_oe_stg1_q; Tests: T1 T2 T3  691 1/1 read_pipeline_oe_stg1_d = host_s_en_inclk; Tests: T1 T2 T3  692 693 1/1 unique case (cmd_info.read_pipeline_mode) Tests: T1 T2 T3  694 RdPipeTwoStageFullCycle: begin 695 1/1 host_s_o = read_pipeline_stg2_q; Tests: T7 T44 T51  696 1/1 read_pipeline_stg1_d = passthrough_i.s; Tests: T7 T44 T51  697 1/1 host_s_en_muxed = read_pipeline_oe_stg2_q; Tests: T7 T44 T51  698 end 699 RdPipeTwoStageHalfCycle: begin 700 1/1 host_s_o = read_pipeline_stg2_q; Tests: T9 T38 T42  701 1/1 read_pipeline_stg1_d = half_cycle_sampled_sd; Tests: T9 T38 T42  702 1/1 host_s_en_muxed = read_pipeline_oe_stg2_q; Tests: T9 T38 T42  703 end 704 default: begin 705 host_s_o = passthrough_i.s; 706 read_pipeline_stg1_d = half_cycle_sampled_sd; 707 host_s_en_muxed = host_s_en_inclk; 708 end 709 endcase 710 end 711 712 always_ff @(posedge clk_out_i or negedge rst_out_ni) begin 713 2/2 if (!rst_out_ni) host_s_en_o <= '0; // input mode Tests: T1 T2 T3  | T1 T2 T3  714 1/1 else host_s_en_o <= host_s_en_muxed; Tests: T6 T7 T9  715 end 716 717 logic pt_gated_sck; 718 prim_clock_gating #( 719 .NoFpgaGate (1'b 0), 720 .FpgaBufGlobal (1'b 1) // Going outside of chip 721 ) u_pt_sck_cg ( 722 .clk_i (host_sck_i ), 723 .en_i (sck_gate_en ), 724 .test_en_i (1'b 0 ), // No FF connected to this gated SCK 725 .clk_o (pt_gated_sck) 726 ); 727 728 1/1 assign passthrough_o.sck = pt_gated_sck; Tests: T1 T2 T3  729 assign passthrough_o.sck_en = 1'b 1; 730 731 // CSb propagation: csb_deassert signal should be an output of FF or latch to 732 // make CSb glitch-free. 733 assign passthrough_o.csb_en = 1'b 1; 734 1/1 assign passthrough_o.csb = host_csb_i | csb_deassert_outclk ; Tests: T1 T2 T3  735 736 // passthrough_en 737 1/1 assign passthrough_o.passthrough_en = is_active && !passthrough_block_i; Tests: T1 T2 T3  738 739 // - END: Passthrough Mux (!important) ------------------------------------ 740 741 /////////////////// 742 // State Machine // 743 /////////////////// 744 always_ff @(posedge clk_i or negedge rst_ni) begin 745 1/1 if (!rst_ni) begin Tests: T1 T2 T3  746 1/1 st <= StIdle; Tests: T1 T2 T3  747 end else begin 748 1/1 st <= st_d; Tests: T6 T7 T9  749 end 750 end 751 752 always_comb begin 753 1/1 st_d = st; Tests: T1 T2 T3  754 755 // filter 756 1/1 filter = 1'b 0; Tests: T1 T2 T3  757 758 // Command Cfg Latch 759 1/1 cmd_info_latch = 1'b 0; Tests: T1 T2 T3  760 761 // addr_set 762 1/1 addr_set_d = 1'b 0; Tests: T1 T2 T3  763 764 // Payload swap control 765 1/1 payload_replace_set = 1'b 0; Tests: T1 T2 T3  766 767 // mbyte counter udpate 768 1/1 mbyte_set = 1'b 0; Tests: T1 T2 T3  769 770 // Dummy 771 1/1 dummy_set = 1'b 0; Tests: T1 T2 T3  772 1/1 dummycnt_d = '0; Tests: T1 T2 T3  773 774 // Output enable 775 1/1 host_s_en_inclk = 4'h 0; Tests: T1 T2 T3  776 1/1 device_s_en_inclk = 4'h 1; // S[0] MOSI active Tests: T1 T2 T3  777 778 1/1 unique case (st) Tests: T1 T2 T3  779 StIdle: begin 780 1/1 if (!is_active) begin Tests: T1 T2 T3  781 1/1 st_d = StIdle; Tests: T1 T2 T3  782 1/1 end else if (cmd_8th && cmd_filter[host_s_i[0]]) begin Tests: T6 T7 T9  783 1/1 st_d = StFilter; Tests: T6 T7 T9  784 1/1 filter = 1'b 1; Tests: T6 T7 T9  785 786 // Send notification event to SW 787 1/1 end else if (cmd_8th && cmd_info_d.valid) begin Tests: T6 T7 T9  788 1/1 cmd_info_latch = 1'b 1; Tests: T6 T7 T9  789 790 // Divert to multiple states. 791 // 792 // The following states are mainly for controlling the output enable 793 // signals. StAddress state, however, controls the SPI lines for 794 // address swap in case of Read Commands. 795 // 796 // Order: addr_mode , dummy_en, |payload_en 797 // Note that no direct transition to MByte state. 798 1/1 if (cmd_info_d.addr_mode != AddrDisabled) begin Tests: T6 T7 T9  799 1/1 st_d = StAddress; Tests: T6 T7 T9  800 801 1/1 addr_set_d = 1'b 1; Tests: T6 T7 T9  802 1/1 end else if (cmd_info_d.dummy_en) begin Tests: T6 T17 T18  803 1/1 st_d = StHighZ; Tests: T42 T53 T32  804 805 1/1 dummy_set = 1'b 1; Tests: T42 T53 T32  806 1/1 dummycnt_d = cmd_info_d.dummy_size; Tests: T42 T53 T32  807 1/1 end else if (cmd_info_d.payload_en != 0) begin Tests: T6 T17 T18  808 // Any input/output payload 809 1/1 if (cmd_info_d.payload_dir == PayloadOut) begin Tests: T6 T17 T18  810 1/1 st_d = StWait; Tests: T6 T18 T44  811 end else begin 812 1/1 st_d = StDriving; Tests: T17 T20 T44  813 814 1/1 payload_replace_set = 1'b 1; Tests: T17 T20 T44  815 end 816 end MISSING_ELSE 817 end // cmd_8th && cmd_info_d.valid 818 1/1 else if (cmd_8th) begin Tests: T6 T7 T9  819 // cmd_info_d.valid is 0. Skip current transaction 820 1/1 st_d = StFilter; Tests: T6 T7 T17  821 1/1 filter = 1'b 1; Tests: T6 T7 T17  822 end MISSING_ELSE 823 end 824 825 StMByte: begin 826 0/1 ==> if (mbytecnt_zero) begin 827 0/1 ==> st_d = StHighZ; 828 829 0/1 ==> dummy_set = 1'b 1; 830 0/1 ==> dummycnt_d = cmd_info_d.dummy_size; 831 end else begin 832 0/1 ==> st_d = StMByte; 833 end 834 end 835 836 StFilter: begin 837 // Command is filtered. Wait until reset(CSb) comes. 838 1/1 st_d = StFilter; Tests: T6 T7 T9  839 1/1 host_s_en_inclk = 4'h 0; // explicit Tests: T6 T7 T9  840 1/1 device_s_en_inclk = 4'h 0; Tests: T6 T7 T9  841 end 842 843 StWait: begin 844 // Device Returns Data to host 845 1/1 st_d = StWait; Tests: T6 T7 T9  846 847 // output enable for host 848 1/1 host_s_en_inclk = cmd_info.payload_en; Tests: T6 T7 T9  849 1/1 device_s_en_inclk = 4'h 0; Tests: T6 T7 T9  850 end 851 852 StDriving: begin 853 // Host sends Data to device 854 1/1 st_d = StDriving; Tests: T6 T17 T18  855 856 // Output enable for device 857 1/1 host_s_en_inclk = 4'h 0; // explicit Tests: T6 T17 T18  858 1/1 device_s_en_inclk = cmd_info.payload_en; Tests: T6 T17 T18  859 end 860 861 StHighZ: begin 862 1/1 host_s_en_inclk = 4'h 0; // explicit Tests: T6 T7 T9  863 1/1 device_s_en_inclk = 4'h 0; // float Tests: T6 T7 T9  864 1/1 if (dummycnt_zero && (cmd_info.payload_dir == PayloadOut)) begin Tests: T6 T7 T9  865 // Assume payload_en not 0 866 1/1 st_d = StWait; Tests: T6 T7 T9  867 1/1 end else if (dummycnt_zero && (cmd_info.payload_dir == PayloadIn)) begin Tests: T6 T7 T9  868 0/1 ==> st_d = StDriving; 869 870 0/1 ==> payload_replace_set = 1'b 1; 871 end MISSING_ELSE 872 end 873 874 StAddress: begin 875 // based on state, addr_phase is set. So just check if counter reaches 0 876 1/1 if (addrcnt_outclk == '0) begin Tests: T6 T7 T9  877 1/1 if (cmd_info.mbyte_en) begin Tests: T6 T7 T9  878 0/1 ==> st_d = StMByte; 879 880 0/1 ==> mbyte_set = 1'b 1; 881 1/1 end else if (cmd_info.dummy_en) begin Tests: T6 T7 T9  882 1/1 st_d = StHighZ; Tests: T6 T7 T9  883 884 1/1 dummy_set = 1'b 1; Tests: T6 T7 T9  885 1/1 dummycnt_d = cmd_info.dummy_size; Tests: T6 T7 T9  886 1/1 end else if (cmd_info.payload_en != 0 Tests: T6 T18 T44  887 && (cmd_info.payload_dir == PayloadOut)) begin 888 1/1 st_d = StWait; Tests: T42 T54 T32  889 1/1 end else if (cmd_info.payload_en != 0 Tests: T6 T18 T44  890 && (cmd_info.payload_dir == PayloadIn)) begin 891 1/1 st_d = StDriving; Tests: T6 T18 T42  892 893 1/1 payload_replace_set = 1'b 1; Tests: T6 T18 T42  894 end else begin 895 // Addr completed command. goto wait state 896 1/1 st_d = StWait; Tests: T44 T42 T35  897 end 898 end MISSING_ELSE 899 end 900 901 default: begin 902 st_d = StIdle;

Cond Coverage for Module : spi_passthrough
TotalCoveredPercent
Conditions978688.66
Logical978688.66
Non-Logical00
Event00

 LINE       271
 EXPRESSION (spi_mode_i == PassThrough)
            -------------1-------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT6,T7,T9

 LINE       355
 SUB-EXPRESSION (filter | csb_deassert)
                 ---1--   ------2-----
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT6,T7,T9
10CoveredT6,T7,T9

 LINE       362
 EXPRESSION (bitcnt != '1)
            -------1------
-1-StatusTests
0CoveredT6,T7,T9
1CoveredT6,T7,T9

 LINE       372
 EXPRESSION (bitcnt == 6'(6))
            --------1--------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT6,T7,T9

 LINE       373
 EXPRESSION (bitcnt == 6'(7))
            --------1--------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT6,T7,T9

 LINE       404
 EXPRESSION (cmd_info_i[i].opcode == {opcode_d[6:0], 1'b1})
            -----------------------1-----------------------
-1-StatusTests
0CoveredT6,T7,T9
1CoveredT6,T7,T9

 LINE       406
 EXPRESSION (cmd_info_i[i].opcode == {opcode_d[6:0], 1'b0})
            -----------------------1-----------------------
-1-StatusTests
0CoveredT6,T7,T9
1CoveredT13,T17,T18

 LINE       467
 EXPRESSION (addr_mode == Addr4B)
            ----------1----------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT7,T9,T18

 LINE       475
 EXPRESSION (st == StAddress)
            --------1--------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT6,T7,T9

 LINE       490
 EXPRESSION (addrcnt_outclk != '0)
            -----------1----------
-1-StatusTests
0CoveredT6,T7,T9
1CoveredT6,T7,T9

 LINE       497
 EXPRESSION (cfg_addr_mask_i[addrcnt_outclk] ? cfg_addr_value_i[addrcnt_outclk] : host_s_i[0])
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT6,T7,T9

 LINE       522
 EXPRESSION ((payloadcnt != '0) && payload_replace)
             ---------1--------    -------2-------
-1--2-StatusTests
01CoveredT6,T18,T44
10CoveredT6,T7,T9
11CoveredT6,T18,T44

 LINE       522
 SUB-EXPRESSION (payloadcnt != '0)
                ---------1--------
-1-StatusTests
0CoveredT6,T18,T44
1CoveredT6,T7,T9

 LINE       543
 EXPRESSION (payloadcnt == '0)
            ---------1--------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT6,T18,T44

 LINE       546
 EXPRESSION (cfg_payload_mask_i[payloadcnt_outclk] ? cfg_payload_data_i[payloadcnt_outclk] : host_s_i[0])
             ------------------1------------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT6,T9,T14

 LINE       570
 EXPRESSION (addr_phase_outclk & cmd_info_addr_swap_en_outclk)
             --------1--------   --------------2-------------
-1--2-StatusTests
01CoveredT6,T42,T32
10CoveredT7,T9,T18
11CoveredT6,T42,T32

 LINE       572
 EXPRESSION (payload_replace_outclk & cmd_info_payload_swap_en_outclk)
             -----------1----------   ---------------2---------------
-1--2-StatusTests
01CoveredT6,T42,T32
10CoveredT17,T18,T20
11CoveredT6,T42,T32

 LINE       575
 EXPRESSION (addr_swap_en | payload_swap_en)
             ------1-----   -------2-------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT6,T42,T32
10CoveredT6,T42,T32

 LINE       576
 EXPRESSION (addr_swap_en ? addr_swap : payload_swap)
             ------1-----
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT6,T42,T32

 LINE       585
 EXPRESSION (st == StHighZ)
            -------1-------
-1-StatusTests
0CoveredT6,T7,T9
1CoveredT6,T7,T9

 LINE       589
 EXPRESSION (dummycnt == '0)
            --------1-------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       600
 EXPRESSION (st == StMByte)
            -------1-------
-1-StatusTests
0CoveredT6,T7,T9
1Not Covered

 LINE       604
 EXPRESSION (mbyte_cnt == '0)
            --------1--------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       609
 EXPRESSION (swap_en ? ({host_s_i[3:1], swap_data}) : host_s_i)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT6,T42,T32

 LINE       734
 EXPRESSION (host_csb_i | csb_deassert_outclk)
             -----1----   ---------2---------
-1--2-StatusTests
00CoveredT1,T6,T7
01CoveredT6,T7,T9
10CoveredT1,T2,T3

 LINE       737
 EXPRESSION (is_active && ((!passthrough_block_i)))
             ----1----    ------------2-----------
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT44,T42,T32
11CoveredT6,T7,T9

 LINE       782
 EXPRESSION (cmd_8th && cmd_filter[host_s_i[0]])
             ---1---    -----------2-----------
-1--2-StatusTests
01Not Covered
10CoveredT6,T7,T9
11CoveredT6,T7,T9

 LINE       787
 EXPRESSION (cmd_8th && cmd_info_d.valid)
             ---1---    --------2-------
-1--2-StatusTests
01Not Covered
10CoveredT6,T7,T17
11CoveredT6,T7,T9

 LINE       798
 EXPRESSION (cmd_info_d.addr_mode != AddrDisabled)
            -------------------1------------------
-1-StatusTests
0CoveredT6,T17,T18
1CoveredT6,T7,T9

 LINE       807
 EXPRESSION (cmd_info_d.payload_en != 4'b0)
            ---------------1---------------
-1-StatusTests
0CoveredT18,T35,T47
1CoveredT6,T17,T18

 LINE       809
 EXPRESSION (cmd_info_d.payload_dir == PayloadOut)
            -------------------1------------------
-1-StatusTests
0CoveredT17,T20,T44
1CoveredT6,T18,T44

 LINE       864
 EXPRESSION (dummycnt_zero && (cmd_info.payload_dir == PayloadOut))
             ------1------    ------------------2-----------------
-1--2-StatusTests
01CoveredT6,T7,T9
10Not Covered
11CoveredT6,T7,T9

 LINE       864
 SUB-EXPRESSION (cmd_info.payload_dir == PayloadOut)
                ------------------1-----------------
-1-StatusTests
0Not Covered
1CoveredT6,T7,T9

 LINE       867
 EXPRESSION (dummycnt_zero && (cmd_info.payload_dir == PayloadIn))
             ------1------    -----------------2-----------------
-1--2-StatusTests
01Not Covered
10Not Covered
11Not Covered

 LINE       867
 SUB-EXPRESSION (cmd_info.payload_dir == PayloadIn)
                -----------------1-----------------
-1-StatusTests
0CoveredT6,T7,T9
1Not Covered

 LINE       876
 EXPRESSION (addrcnt_outclk == '0)
            -----------1----------
-1-StatusTests
0CoveredT6,T7,T9
1CoveredT6,T7,T9

 LINE       886
 EXPRESSION ((cmd_info.payload_en != 4'b0) && (cmd_info.payload_dir == PayloadOut))
             --------------1--------------    ------------------2-----------------
-1--2-StatusTests
01CoveredT44,T42,T35
10CoveredT6,T18,T42
11CoveredT42,T54,T32

 LINE       886
 SUB-EXPRESSION (cmd_info.payload_en != 4'b0)
                --------------1--------------
-1-StatusTests
0CoveredT44,T42,T35
1CoveredT6,T18,T42

 LINE       886
 SUB-EXPRESSION (cmd_info.payload_dir == PayloadOut)
                ------------------1-----------------
-1-StatusTests
0CoveredT6,T18,T42
1CoveredT44,T42,T54

 LINE       889
 EXPRESSION ((cmd_info.payload_en != 4'b0) && (cmd_info.payload_dir == PayloadIn))
             --------------1--------------    -----------------2-----------------
-1--2-StatusTests
01Not Covered
10Not Covered
11CoveredT6,T18,T42

 LINE       889
 SUB-EXPRESSION (cmd_info.payload_en != 4'b0)
                --------------1--------------
-1-StatusTests
0CoveredT44,T42,T35
1CoveredT6,T18,T42

 LINE       889
 SUB-EXPRESSION (cmd_info.payload_dir == PayloadIn)
                -----------------1-----------------
-1-StatusTests
0CoveredT44,T42,T35
1CoveredT6,T18,T42

FSM Coverage for Module : spi_passthrough
Summary for FSM :: st
TotalCoveredPercent
States 7 6 85.71 (Not included in score)
Transitions 12 9 75.00
Sequences 0 0

State, Transition and Sequence Details for FSM :: st
statesLine No.CoveredTests
StAddress 799 Covered T6,T7,T9
StDriving 812 Covered T6,T17,T18
StFilter 783 Covered T6,T7,T9
StHighZ 803 Covered T6,T7,T9
StIdle 781 Covered T1,T2,T3
StMByte 832 Not Covered
StWait 810 Covered T6,T7,T9


transitionsLine No.CoveredTests
StAddress->StDriving 891 Covered T6,T18,T42
StAddress->StHighZ 882 Covered T6,T7,T9
StAddress->StMByte 878 Not Covered
StAddress->StWait 888 Covered T44,T42,T54
StHighZ->StDriving 868 Not Covered
StHighZ->StWait 866 Covered T6,T7,T9
StIdle->StAddress 799 Covered T6,T7,T9
StIdle->StDriving 812 Covered T17,T20,T44
StIdle->StFilter 783 Covered T6,T7,T9
StIdle->StHighZ 803 Covered T42,T53,T32
StIdle->StWait 810 Covered T6,T18,T44
StMByte->StHighZ 827 Not Covered



Branch Coverage for Module : spi_passthrough
Line No.TotalCoveredPercent
Branches 96 89 92.71
TERNARY 497 2 2 100.00
TERNARY 546 2 2 100.00
TERNARY 576 2 2 100.00
TERNARY 609 2 2 100.00
IF 336 3 3 100.00
IF 345 3 3 100.00
IF 349 2 2 100.00
IF 360 3 3 100.00
IF 376 3 3 100.00
IF 401 2 2 100.00
IF 414 3 3 100.00
IF 425 3 3 100.00
IF 451 2 2 100.00
IF 467 2 2 100.00
IF 478 2 2 100.00
IF 486 4 4 100.00
IF 506 2 2 100.00
IF 520 3 3 100.00
IF 528 2 2 100.00
IF 533 4 4 100.00
IF 539 2 2 100.00
IF 561 2 2 100.00
IF 582 4 4 100.00
IF 596 4 2 50.00
IF 613 2 2 100.00
CASE 693 3 3 100.00
IF 713 2 2 100.00
IF 745 2 2 100.00
CASE 778 24 19 79.17


497 assign addr_swap = cfg_addr_mask_i[addrcnt_outclk] 498 ? cfg_addr_value_i[addrcnt_outclk] -1- ==> ==>

Branches:
-1-StatusTests
1 Covered T6,T7,T9
0 Covered T1,T2,T3


546 assign payload_swap = cfg_payload_mask_i[payloadcnt_outclk] 547 ? cfg_payload_data_i[payloadcnt_outclk] -1- ==> ==>

Branches:
-1-StatusTests
1 Covered T6,T9,T14
0 Covered T1,T2,T3


576 assign swap_data = (addr_swap_en) ? addr_swap : payload_swap ; -1- ==> ==>

Branches:
-1-StatusTests
1 Covered T6,T42,T32
0 Covered T1,T2,T3


609 assign passthrough_o.s = (swap_en) ? {host_s_i[3:1], swap_data} : host_s_i ; -1- ==> ==>

Branches:
-1-StatusTests
1 Covered T6,T42,T32
0 Covered T1,T2,T3


336 if (!rst_ni) begin -1- 337 opcode <= 8'h 00; ==> 338 end else if (bitcnt < MetaBitCntW'(8)) begin -2- 339 opcode <= opcode_d; ==> 340 end MISSING_ELSE ==>

Branches:
-1--2-StatusTests
1 - Covered T1,T2,T3
0 1 Covered T6,T7,T9
0 0 Covered T6,T7,T9


345 if (!rst_ni) csb_deassert <= 1'b 0; -1- ==> 346 else if (filter) csb_deassert <= 1'b 1; -2- ==> MISSING_ELSE ==>

Branches:
-1--2-StatusTests
1 - Covered T1,T2,T3
0 1 Covered T6,T7,T9
0 0 Covered T6,T7,T9


349 if (!rst_out_ni) csb_deassert_outclk <= 1'b 0; -1- ==> 350 else csb_deassert_outclk <= csb_deassert; ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T3
0 Covered T6,T7,T9


360 if (!rst_ni) begin -1- 361 bitcnt <= '0; ==> 362 end else if (bitcnt != '1) begin -2- 363 bitcnt <= bitcnt + MetaBitCntW'(1); ==> 364 end MISSING_ELSE ==>

Branches:
-1--2-StatusTests
1 - Covered T1,T2,T3
0 1 Covered T6,T7,T9
0 0 Covered T6,T7,T9


376 if (!rst_ni) begin -1- 377 cmd_filter <= 2'b 00; ==> 378 end else if (cmd_7th) begin -2- 379 // In this 7th beat, cmd_filter latches 2 bits from cfg_cmd_filter_i 380 // This reduces the last filter datapath from muxing 256 to just mux2 381 // 382 // If below syntax does not work, it can be replaced with 383 // for (int unsigned i = 0 ; i < 128 ; i++) begin 384 // it (i == opcode[6:0]) cmd_filter <= cfg_cmd_filter_i[2*i+:2]; 385 // end 386 cmd_filter <= cfg_cmd_filter_i[{opcode_d[6:0],1'b0}+:2]; ==> 387 end MISSING_ELSE ==>

Branches:
-1--2-StatusTests
1 - Covered T1,T2,T3
0 1 Covered T6,T7,T9
0 0 Covered T6,T7,T9


401 if (cmd_7th) begin -1- 402 for(int unsigned i = 0 ; i < NumTotalCmdInfo ; i++) begin ==> 403 if (cmd_info_i[i].valid) begin 404 if (cmd_info_i[i].opcode == {opcode_d[6:0], 1'b1}) begin 405 cmd_info_7th_d[1] = cmd_info_i[i]; 406 end else if (cmd_info_i[i].opcode == {opcode_d[6:0], 1'b0}) begin 407 cmd_info_7th_d[0] = cmd_info_i[i]; 408 end 409 end // cmd_info_i[i].valid 410 end 411 end MISSING_ELSE ==>

Branches:
-1-StatusTests
1 Covered T6,T7,T9
0 Covered T1,T2,T3


414 if (!rst_ni) begin -1- 415 cmd_info_7th <= '0; ==> 416 end else if (cmd_7th) begin -2- 417 // Search two candidate among NumCmdInfo. If only one matched, other 418 // cmd_info is Always Input command. 419 cmd_info_7th <= cmd_info_7th_d; ==> 420 //cmd_info_7th <= {PassThroughCmdInfo[{opcode_d[6:0],1'b1}], 421 // PassThroughCmdInfo[{opcode_d[6:0],1'b0}]}; 422 end MISSING_ELSE ==>

Branches:
-1--2-StatusTests
1 - Covered T1,T2,T3
0 1 Covered T6,T7,T9
0 0 Covered T6,T7,T9


425 if (!rst_ni) begin -1- 426 cmd_info <= '0; ==> 427 end else if (cmd_info_latch) begin -2- 428 // Latch only two cmd_info when the 7th bit arrives. Then select among two 429 // at the 8th beat for cmd_info_d to reduce timing. 430 cmd_info <= cmd_info_d; ==> 431 end MISSING_ELSE ==>

Branches:
-1--2-StatusTests
1 - Covered T1,T2,T3
0 1 Covered T6,T7,T9
0 0 Covered T6,T7,T9


451 if (cmd_8th) begin -1- 452 // Latch only two cmd_info when the 7th bit arrives. Then select among two 453 // at the 8th beat for cmd_info_d to reduce timing. 454 cmd_info_d = cmd_info_7th[host_s_i[0]]; ==> 455 456 cmd_info_d.opcode = opcode_d; 457 458 // dummy_size is set inside State Machine 459 end MISSING_ELSE ==>

Branches:
-1-StatusTests
1 Covered T6,T7,T9
0 Covered T1,T2,T3


467 if (addr_mode == Addr4B) begin -1- 468 addr_size_d = AddrCntW'(31); ==> 469 end MISSING_ELSE ==>

Branches:
-1-StatusTests
1 Covered T7,T9,T18
0 Covered T1,T2,T3


478 if (!rst_ni) begin -1- 479 addr_set_q <= '0; ==> 480 end else begin 481 addr_set_q <= addr_set_d; ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T3
0 Covered T6,T7,T9


486 if (!rst_out_ni) begin -1- 487 addrcnt_outclk <= '0; ==> 488 end else if (addr_set_q) begin -2- 489 addrcnt_outclk <= addr_size_d; ==> 490 end else if (addrcnt_outclk != '0) begin -3- 491 addrcnt_outclk <= addrcnt_outclk - AddrCntW'(1); ==> 492 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T6,T7,T9
0 0 1 Covered T6,T7,T9
0 0 0 Covered T6,T7,T9


506 if (!rst_out_ni) addr_phase_outclk <= 1'b 0; -1- ==> 507 else addr_phase_outclk <= addr_phase; ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T3
0 Covered T6,T7,T9


520 if (!rst_ni) begin -1- 521 payloadcnt <= 5'h 1F; ==> 522 end else if ((payloadcnt != '0) && payload_replace) begin -2- 523 payloadcnt <= payloadcnt - 1'b 1; ==> 524 end MISSING_ELSE ==>

Branches:
-1--2-StatusTests
1 - Covered T1,T2,T3
0 1 Covered T6,T18,T44
0 0 Covered T6,T7,T9


528 if (!rst_out_ni) payloadcnt_outclk <= 5'h 1F; -1- ==> 529 else payloadcnt_outclk <= payloadcnt; ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T3
0 Covered T6,T7,T9


533 if (!rst_ni) payload_replace <= 1'b 0; -1- ==> 534 else if (payload_replace_set) payload_replace <= 1'b 1; -2- ==> 535 else if (payload_replace_clr) payload_replace <= 1'b 0; -3- ==> MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T6,T17,T18
0 0 1 Covered T6,T18,T44
0 0 0 Covered T6,T7,T9


539 if (!rst_out_ni) payload_replace_outclk <= 1'b 0; -1- ==> 540 else payload_replace_outclk <= payload_replace; ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T3
0 Covered T6,T7,T9


561 if (!rst_out_ni) begin -1- 562 cmd_info_addr_swap_en_outclk <= 1'b 0; ==> 563 cmd_info_payload_swap_en_outclk <= 1'b 0; 564 end else begin 565 cmd_info_addr_swap_en_outclk <= cmd_info.addr_swap_en; ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T3
0 Covered T6,T7,T9


582 if (!rst_ni) dummycnt <= '0; -1- ==> 583 else if (dummy_set) begin -2- 584 dummycnt <= dummycnt_d; ==> 585 end else if (st == StHighZ) begin -3- 586 dummycnt <= dummycnt - 1'b 1; ==> 587 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T6,T7,T9
0 0 1 Covered T6,T7,T9
0 0 0 Covered T6,T7,T9


596 if (!rst_ni) begin -1- 597 mbyte_cnt <= '0; ==> 598 end else if (mbyte_set) begin -2- 599 mbyte_cnt <= 2'h 3; ==> 600 end else if (st == StMByte) begin -3- 601 mbyte_cnt <= mbyte_cnt - 1'b 1; ==> 602 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Not Covered
0 0 1 Not Covered
0 0 0 Covered T6,T7,T9


613 if (!rst_out_ni) passthrough_s_en <= 4'h 1; // S[0] active by default -1- ==> 614 else passthrough_s_en <= device_s_en_inclk; ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T3
0 Covered T6,T7,T9


693 unique case (cmd_info.read_pipeline_mode) -1- 694 RdPipeTwoStageFullCycle: begin 695 host_s_o = read_pipeline_stg2_q; ==> 696 read_pipeline_stg1_d = passthrough_i.s; 697 host_s_en_muxed = read_pipeline_oe_stg2_q; 698 end 699 RdPipeTwoStageHalfCycle: begin 700 host_s_o = read_pipeline_stg2_q; ==> 701 read_pipeline_stg1_d = half_cycle_sampled_sd; 702 host_s_en_muxed = read_pipeline_oe_stg2_q; 703 end 704 default: begin 705 host_s_o = passthrough_i.s; ==>

Branches:
-1-StatusTests
RdPipeTwoStageFullCycle Covered T7,T44,T51
RdPipeTwoStageHalfCycle Covered T9,T38,T42
default Covered T1,T2,T3


713 if (!rst_out_ni) host_s_en_o <= '0; // input mode -1- ==> 714 else host_s_en_o <= host_s_en_muxed; ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T3
0 Covered T6,T7,T9


745 if (!rst_ni) begin -1- 746 st <= StIdle; ==> 747 end else begin 748 st <= st_d; ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T3
0 Covered T6,T7,T9


778 unique case (st) -1- 779 StIdle: begin 780 if (!is_active) begin -2- 781 st_d = StIdle; ==> 782 end else if (cmd_8th && cmd_filter[host_s_i[0]]) begin -3- 783 st_d = StFilter; ==> 784 filter = 1'b 1; 785 786 // Send notification event to SW 787 end else if (cmd_8th && cmd_info_d.valid) begin -4- 788 cmd_info_latch = 1'b 1; 789 790 // Divert to multiple states. 791 // 792 // The following states are mainly for controlling the output enable 793 // signals. StAddress state, however, controls the SPI lines for 794 // address swap in case of Read Commands. 795 // 796 // Order: addr_mode , dummy_en, |payload_en 797 // Note that no direct transition to MByte state. 798 if (cmd_info_d.addr_mode != AddrDisabled) begin -5- 799 st_d = StAddress; ==> 800 801 addr_set_d = 1'b 1; 802 end else if (cmd_info_d.dummy_en) begin -6- 803 st_d = StHighZ; ==> 804 805 dummy_set = 1'b 1; 806 dummycnt_d = cmd_info_d.dummy_size; 807 end else if (cmd_info_d.payload_en != 0) begin -7- 808 // Any input/output payload 809 if (cmd_info_d.payload_dir == PayloadOut) begin -8- 810 st_d = StWait; ==> 811 end else begin 812 st_d = StDriving; ==> 813 814 payload_replace_set = 1'b 1; 815 end 816 end MISSING_ELSE ==> 817 end // cmd_8th && cmd_info_d.valid 818 else if (cmd_8th) begin -9- 819 // cmd_info_d.valid is 0. Skip current transaction 820 st_d = StFilter; ==> 821 filter = 1'b 1; 822 end MISSING_ELSE ==> 823 end 824 825 StMByte: begin 826 if (mbytecnt_zero) begin -10- 827 st_d = StHighZ; ==> 828 829 dummy_set = 1'b 1; 830 dummycnt_d = cmd_info_d.dummy_size; 831 end else begin 832 st_d = StMByte; ==> 833 end 834 end 835 836 StFilter: begin 837 // Command is filtered. Wait until reset(CSb) comes. 838 st_d = StFilter; ==> 839 host_s_en_inclk = 4'h 0; // explicit 840 device_s_en_inclk = 4'h 0; 841 end 842 843 StWait: begin 844 // Device Returns Data to host 845 st_d = StWait; ==> 846 847 // output enable for host 848 host_s_en_inclk = cmd_info.payload_en; 849 device_s_en_inclk = 4'h 0; 850 end 851 852 StDriving: begin 853 // Host sends Data to device 854 st_d = StDriving; ==> 855 856 // Output enable for device 857 host_s_en_inclk = 4'h 0; // explicit 858 device_s_en_inclk = cmd_info.payload_en; 859 end 860 861 StHighZ: begin 862 host_s_en_inclk = 4'h 0; // explicit 863 device_s_en_inclk = 4'h 0; // float 864 if (dummycnt_zero && (cmd_info.payload_dir == PayloadOut)) begin -11- 865 // Assume payload_en not 0 866 st_d = StWait; ==> 867 end else if (dummycnt_zero && (cmd_info.payload_dir == PayloadIn)) begin -12- 868 st_d = StDriving; ==> 869 870 payload_replace_set = 1'b 1; 871 end MISSING_ELSE ==> 872 end 873 874 StAddress: begin 875 // based on state, addr_phase is set. So just check if counter reaches 0 876 if (addrcnt_outclk == '0) begin -13- 877 if (cmd_info.mbyte_en) begin -14- 878 st_d = StMByte; ==> 879 880 mbyte_set = 1'b 1; 881 end else if (cmd_info.dummy_en) begin -15- 882 st_d = StHighZ; ==> 883 884 dummy_set = 1'b 1; 885 dummycnt_d = cmd_info.dummy_size; 886 end else if (cmd_info.payload_en != 0 -16- 887 && (cmd_info.payload_dir == PayloadOut)) begin 888 st_d = StWait; ==> 889 end else if (cmd_info.payload_en != 0 -17- 890 && (cmd_info.payload_dir == PayloadIn)) begin 891 st_d = StDriving; ==> 892 893 payload_replace_set = 1'b 1; 894 end else begin 895 // Addr completed command. goto wait state 896 st_d = StWait; ==> 897 end 898 end MISSING_ELSE ==> 899 end 900 901 default: begin 902 st_d = StIdle; ==>

Branches:
-1--2--3--4--5--6--7--8--9--10--11--12--13--14--15--16--17-StatusTests
StIdle 1 - - - - - - - - - - - - - - - Covered T1,T2,T3
StIdle 0 1 - - - - - - - - - - - - - - Covered T6,T7,T9
StIdle 0 0 1 1 - - - - - - - - - - - - Covered T6,T7,T9
StIdle 0 0 1 0 1 - - - - - - - - - - - Covered T42,T53,T32
StIdle 0 0 1 0 0 1 1 - - - - - - - - - Covered T6,T18,T44
StIdle 0 0 1 0 0 1 0 - - - - - - - - - Covered T17,T20,T44
StIdle 0 0 1 0 0 0 - - - - - - - - - - Covered T18,T35,T47
StIdle 0 0 0 - - - - 1 - - - - - - - - Covered T6,T7,T17
StIdle 0 0 0 - - - - 0 - - - - - - - - Covered T6,T7,T9
StMByte - - - - - - - - 1 - - - - - - - Not Covered
StMByte - - - - - - - - 0 - - - - - - - Not Covered
StFilter - - - - - - - - - - - - - - - - Covered T6,T7,T9
StWait - - - - - - - - - - - - - - - - Covered T6,T7,T9
StDriving - - - - - - - - - - - - - - - - Covered T6,T17,T18
StHighZ - - - - - - - - - 1 - - - - - - Covered T6,T7,T9
StHighZ - - - - - - - - - 0 1 - - - - - Not Covered
StHighZ - - - - - - - - - 0 0 - - - - - Covered T6,T7,T9
StAddress - - - - - - - - - - - 1 1 - - - Not Covered
StAddress - - - - - - - - - - - 1 0 1 - - Covered T6,T7,T9
StAddress - - - - - - - - - - - 1 0 0 1 - Covered T42,T54,T32
StAddress - - - - - - - - - - - 1 0 0 0 1 Covered T6,T18,T42
StAddress - - - - - - - - - - - 1 0 0 0 0 Covered T44,T42,T35
StAddress - - - - - - - - - - - 0 - - - - Covered T6,T7,T9
default - - - - - - - - - - - - - - - - Not Covered


Assert Coverage for Module : spi_passthrough
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 2 2 100.00 2 100.00
Cover properties 0 0 0
Cover sequences 0 0 0
Total 2 2 100.00 2 100.00




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
PassThroughStKnown_A 151213017 121360828 0 0
PayloadSwapConstraint_M 151213017 2210072 0 0


PassThroughStKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 151213017 121360828 0 0
T6 12271 12270 0 0
T7 12933 12648 0 0
T9 39120 39120 0 0
T11 22243 22243 0 0
T13 22863 22863 0 0
T14 14683 14262 0 0
T15 216 0 0 0
T16 1128 0 0 0
T17 12514 12480 0 0
T18 42723 42064 0 0
T19 0 4144 0 0
T20 0 14416 0 0

PayloadSwapConstraint_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 151213017 2210072 0 0
T6 12271 4496 0 0
T7 12933 0 0 0
T9 39120 0 0 0
T11 22243 0 0 0
T13 22863 0 0 0
T14 14683 0 0 0
T15 216 0 0 0
T16 1128 0 0 0
T17 12514 0 0 0
T18 42723 0 0 0
T32 0 24464 0 0
T42 0 21512 0 0
T47 0 8280 0 0
T55 0 4160 0 0
T56 0 64 0 0
T57 0 7480 0 0
T58 0 29368 0 0
T59 0 19664 0 0
T60 0 1048 0 0

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