Module Definition
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Module : prim_arbiter_ppc
SCORELINECONDTOGGLEFSMBRANCHASSERT
94.95 100.00 92.31 100.00 87.50

Source File(s) :
/workspaces/repo/scratch/os_regression_2024_08_31/xbar_main-sim-vcs/xbar_build_mode/sim-vcs/../src/lowrisc_prim_arbiter_0/rtl/prim_arbiter_ppc.sv

Module self-instances :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
tb.dut.u_sm1_29.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_31.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_33.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_34.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_36.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_38.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_40.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_42.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_43.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_44.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_45.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_46.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_47.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_48.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_49.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_50.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_51.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_52.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_53.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_54.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_55.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_56.gen_arb_ppc.u_reqarb 93.39 100.00 92.31 100.00 81.25
tb.dut.u_sm1_28.gen_arb_ppc.u_reqarb 94.95 100.00 92.31 100.00 87.50
tb.dut.u_sm1_30.gen_arb_ppc.u_reqarb 94.95 100.00 92.31 100.00 87.50



Module Instance : tb.dut.u_sm1_29.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
95.96 100.00 87.88 100.00 u_sm1_29


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_31.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
95.96 100.00 87.88 100.00 u_sm1_31


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_33.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_33


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_34.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_34


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_36.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_36


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_38.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_38


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_40.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_40


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_42.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_42


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_43.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_43


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_44.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_44


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_45.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_45


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_46.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_46


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_47.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_47


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_48.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_48


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_49.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_49


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_50.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_50


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_51.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_51


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_52.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_52


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_53.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_53


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_54.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_54


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_55.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_55


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_56.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.39 100.00 92.31 100.00 81.25


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
96.97 100.00 90.91 100.00 u_sm1_56


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_28.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
94.95 100.00 92.31 100.00 87.50


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
94.95 100.00 92.31 100.00 87.50


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
95.96 100.00 87.88 100.00 u_sm1_28


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children



Module Instance : tb.dut.u_sm1_30.gen_arb_ppc.u_reqarb

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
94.95 100.00 92.31 100.00 87.50


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
94.95 100.00 92.31 100.00 87.50


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
100.00 100.00 100.00 100.00 u_sm1_30


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
no children

Line Coverage for Module : prim_arbiter_ppc ( parameter N=3,DW=109,EnDataPort=1,IdxW=2 )
Line Coverage for Module self-instances :
SCORELINE
94.95 100.00
tb.dut.u_sm1_28.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_29.gen_arb_ppc.u_reqarb

SCORELINE
94.95 100.00
tb.dut.u_sm1_30.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_31.gen_arb_ppc.u_reqarb

Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T1 T2 T3  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Line Coverage for Module : prim_arbiter_ppc ( parameter N=2,DW=109,EnDataPort=1,IdxW=1 )
Line Coverage for Module self-instances :
SCORELINE
93.39 100.00
tb.dut.u_sm1_33.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_34.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_36.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_38.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_40.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_42.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_43.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_44.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_45.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_46.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_47.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_48.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_49.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_50.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_51.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_52.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_53.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_54.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_55.gen_arb_ppc.u_reqarb

SCORELINE
93.39 100.00
tb.dut.u_sm1_56.gen_arb_ppc.u_reqarb

Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T1 T2 T3  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Module : prim_arbiter_ppc ( parameter N=3,DW=109,EnDataPort=1,IdxW=2 )
Cond Coverage for Module self-instances :
SCORECOND
94.95 92.31
tb.dut.u_sm1_28.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_29.gen_arb_ppc.u_reqarb

SCORECOND
94.95 92.31
tb.dut.u_sm1_30.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_31.gen_arb_ppc.u_reqarb

TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT1,T2,T3
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT1,T2,T3

Cond Coverage for Module : prim_arbiter_ppc ( parameter N=2,DW=109,EnDataPort=1,IdxW=1 )
Cond Coverage for Module self-instances :
SCORECOND
93.39 92.31
tb.dut.u_sm1_33.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_34.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_36.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_38.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_40.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_42.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_43.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_44.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_45.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_46.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_47.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_48.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_49.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_50.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_51.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_52.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_53.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_54.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_55.gen_arb_ppc.u_reqarb

SCORECOND
93.39 92.31
tb.dut.u_sm1_56.gen_arb_ppc.u_reqarb

TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT1,T2,T3
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT1,T2,T3

Branch Coverage for Module : prim_arbiter_ppc
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
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


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Module : prim_arbiter_ppc
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 14 87.50
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 14 87.50




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 2147483647 2147483647 0 0
CheckNGreaterZero_A 21600 21600 0 0
GntImpliesReady_A 2147483647 7933463 0 0
GntImpliesValid_A 2147483647 7933463 0 0
GrantKnown_A 2147483647 2147483647 0 0
IdxKnown_A 2147483647 2147483647 0 0
IndexIsCorrect_A 2147483647 7933463 0 0
LockArbDecision_A 2147483647 0 0 0
NoReadyValidNoGrant_A 2147483647 446350815 0 0
ReadyAndValidImplyGrant_A 2147483647 7933463 0 0
ReqAndReadyImplyGrant_A 2147483647 7933463 0 0
ReqImpliesValid_A 2147483647 31736863 0 0
ReqStaysHighUntilGranted0_M 2147483647 0 0 0
RoundRobin_A 2147483647 52048 0 21600
ValidKnown_A 2147483647 2147483647 0 0
gen_data_port_assertion.DataFlow_A 2147483647 7933463 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 2147483647 0 0
T1 63552 61800 0 0
T2 310608 309456 0 0
T3 8542992 8540712 0 0
T7 1996080 1995600 0 0
T8 316536 316224 0 0
T9 24840 24456 0 0
T10 323400 322392 0 0
T11 10374744 10373736 0 0
T12 8702808 8702184 0 0
T13 153408 152208 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 21600 21600 0 0
T1 24 24 0 0
T2 24 24 0 0
T3 24 24 0 0
T7 24 24 0 0
T8 24 24 0 0
T9 24 24 0 0
T10 24 24 0 0
T11 24 24 0 0
T12 24 24 0 0
T13 24 24 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 7933463 0 0
T1 63552 416 0 0
T2 310608 435 0 0
T3 8542992 442 0 0
T7 1996080 8630 0 0
T8 316536 8777 0 0
T9 24840 761 0 0
T10 323400 1325 0 0
T11 10374744 420 0 0
T12 8702808 906 0 0
T13 153408 2625 0 0
T14 0 3897 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 7933463 0 0
T1 63552 416 0 0
T2 310608 435 0 0
T3 8542992 442 0 0
T7 1996080 8630 0 0
T8 316536 8777 0 0
T9 24840 761 0 0
T10 323400 1325 0 0
T11 10374744 420 0 0
T12 8702808 906 0 0
T13 153408 2625 0 0
T14 0 3897 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 2147483647 0 0
T1 63552 61800 0 0
T2 310608 309456 0 0
T3 8542992 8540712 0 0
T7 1996080 1995600 0 0
T8 316536 316224 0 0
T9 24840 24456 0 0
T10 323400 322392 0 0
T11 10374744 10373736 0 0
T12 8702808 8702184 0 0
T13 153408 152208 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 2147483647 0 0
T1 63552 61800 0 0
T2 310608 309456 0 0
T3 8542992 8540712 0 0
T7 1996080 1995600 0 0
T8 316536 316224 0 0
T9 24840 24456 0 0
T10 323400 322392 0 0
T11 10374744 10373736 0 0
T12 8702808 8702184 0 0
T13 153408 152208 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 7933463 0 0
T1 63552 416 0 0
T2 310608 435 0 0
T3 8542992 442 0 0
T7 1996080 8630 0 0
T8 316536 8777 0 0
T9 24840 761 0 0
T10 323400 1325 0 0
T11 10374744 420 0 0
T12 8702808 906 0 0
T13 153408 2625 0 0
T14 0 3897 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 446350815 0 0
T1 63552 855 0 0
T2 310608 14879 0 0
T3 8542992 298318 0 0
T7 1996080 127294 0 0
T8 316536 8862 0 0
T9 24840 154 0 0
T10 323400 21599 0 0
T11 10374744 530242 0 0
T12 8702808 569129 0 0
T13 153408 3171 0 0
T14 0 3672 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 7933463 0 0
T1 63552 416 0 0
T2 310608 435 0 0
T3 8542992 442 0 0
T7 1996080 8630 0 0
T8 316536 8777 0 0
T9 24840 761 0 0
T10 323400 1325 0 0
T11 10374744 420 0 0
T12 8702808 906 0 0
T13 153408 2625 0 0
T14 0 3897 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 7933463 0 0
T1 63552 416 0 0
T2 310608 435 0 0
T3 8542992 442 0 0
T7 1996080 8630 0 0
T8 316536 8777 0 0
T9 24840 761 0 0
T10 323400 1325 0 0
T11 10374744 420 0 0
T12 8702808 906 0 0
T13 153408 2625 0 0
T14 0 3897 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 31736863 0 0
T1 63552 497 0 0
T2 310608 931 0 0
T3 8542992 773 0 0
T7 1996080 19734 0 0
T8 316536 9911 0 0
T9 24840 1252 0 0
T10 323400 3173 0 0
T11 10374744 21397 0 0
T12 8702808 46825 0 0
T13 153408 2883 0 0
T14 0 4020 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 52048 0 21600
T7 166340 0 0 2
T8 26378 47 0 2
T9 2070 0 0 2
T10 26950 0 0 2
T11 864562 0 0 2
T12 725234 0 0 2
T13 12784 12 0 2
T14 38034 36 0 2
T15 16454 8 0 2
T16 0 13 0 0
T17 0 17 0 0
T18 0 25 0 0
T19 0 2 0 0
T20 0 1 0 0
T21 0 10 0 0
T22 0 6 0 0
T23 0 4 0 0
T24 4366 0 0 2

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 2147483647 0 0
T1 63552 61800 0 0
T2 310608 309456 0 0
T3 8542992 8540712 0 0
T7 1996080 1995600 0 0
T8 316536 316224 0 0
T9 24840 24456 0 0
T10 323400 322392 0 0
T11 10374744 10373736 0 0
T12 8702808 8702184 0 0
T13 153408 152208 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 7933463 0 0
T1 63552 416 0 0
T2 310608 435 0 0
T3 8542992 442 0 0
T7 1996080 8630 0 0
T8 316536 8777 0 0
T9 24840 761 0 0
T10 323400 1325 0 0
T11 10374744 420 0 0
T12 8702808 906 0 0
T13 153408 2625 0 0
T14 0 3897 0 0

Line Coverage for Instance : tb.dut.u_sm1_29.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T1 T2 T3  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_29.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT1,T2,T3
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT1,T2,T3

Branch Coverage for Instance : tb.dut.u_sm1_29.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
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


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_29.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 877680 0 0
GntImpliesValid_A 422133040 877680 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 877680 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 10922131 0 0
ReadyAndValidImplyGrant_A 422133040 877680 0 0
ReqAndReadyImplyGrant_A 422133040 877680 0 0
ReqImpliesValid_A 422133040 2278476 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 877680 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 877680 0 0
T1 2648 36 0 0
T2 12942 49 0 0
T3 355958 55 0 0
T7 83170 961 0 0
T8 13189 985 0 0
T9 1035 82 0 0
T10 13475 148 0 0
T11 432281 50 0 0
T12 362617 91 0 0
T13 6392 296 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 877680 0 0
T1 2648 36 0 0
T2 12942 49 0 0
T3 355958 55 0 0
T7 83170 961 0 0
T8 13189 985 0 0
T9 1035 82 0 0
T10 13475 148 0 0
T11 432281 50 0 0
T12 362617 91 0 0
T13 6392 296 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 877680 0 0
T1 2648 36 0 0
T2 12942 49 0 0
T3 355958 55 0 0
T7 83170 961 0 0
T8 13189 985 0 0
T9 1035 82 0 0
T10 13475 148 0 0
T11 432281 50 0 0
T12 362617 91 0 0
T13 6392 296 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 10922131 0 0
T1 2648 30 0 0
T2 12942 349 0 0
T3 355958 225 0 0
T7 83170 7088 0 0
T8 13189 713 0 0
T9 1035 58 0 0
T10 13475 1105 0 0
T11 432281 16387 0 0
T12 362617 33411 0 0
T13 6392 250 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 877680 0 0
T1 2648 36 0 0
T2 12942 49 0 0
T3 355958 55 0 0
T7 83170 961 0 0
T8 13189 985 0 0
T9 1035 82 0 0
T10 13475 148 0 0
T11 432281 50 0 0
T12 362617 91 0 0
T13 6392 296 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 877680 0 0
T1 2648 36 0 0
T2 12942 49 0 0
T3 355958 55 0 0
T7 83170 961 0 0
T8 13189 985 0 0
T9 1035 82 0 0
T10 13475 148 0 0
T11 432281 50 0 0
T12 362617 91 0 0
T13 6392 296 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2278476 0 0
T1 2648 43 0 0
T2 12942 67 0 0
T3 355958 76 0 0
T7 83170 1784 0 0
T8 13189 1258 0 0
T9 1035 107 0 0
T10 13475 300 0 0
T11 432281 1162 0 0
T12 362617 3648 0 0
T13 6392 343 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 877680 0 0
T1 2648 36 0 0
T2 12942 49 0 0
T3 355958 55 0 0
T7 83170 961 0 0
T8 13189 985 0 0
T9 1035 82 0 0
T10 13475 148 0 0
T11 432281 50 0 0
T12 362617 91 0 0
T13 6392 296 0 0

Line Coverage for Instance : tb.dut.u_sm1_31.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T1 T2 T3  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_31.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT1,T2,T3
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT1,T2,T3

Branch Coverage for Instance : tb.dut.u_sm1_31.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
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


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_31.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 865945 0 0
GntImpliesValid_A 422133040 865945 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 865945 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 10853296 0 0
ReadyAndValidImplyGrant_A 422133040 865945 0 0
ReqAndReadyImplyGrant_A 422133040 865945 0 0
ReqImpliesValid_A 422133040 2309650 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 865945 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 865945 0 0
T1 2648 33 0 0
T2 12942 39 0 0
T3 355958 49 0 0
T7 83170 957 0 0
T8 13189 1002 0 0
T9 1035 75 0 0
T10 13475 157 0 0
T11 432281 44 0 0
T12 362617 88 0 0
T13 6392 272 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 865945 0 0
T1 2648 33 0 0
T2 12942 39 0 0
T3 355958 49 0 0
T7 83170 957 0 0
T8 13189 1002 0 0
T9 1035 75 0 0
T10 13475 157 0 0
T11 432281 44 0 0
T12 362617 88 0 0
T13 6392 272 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 865945 0 0
T1 2648 33 0 0
T2 12942 39 0 0
T3 355958 49 0 0
T7 83170 957 0 0
T8 13189 1002 0 0
T9 1035 75 0 0
T10 13475 157 0 0
T11 432281 44 0 0
T12 362617 88 0 0
T13 6392 272 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 10853296 0 0
T1 2648 33 0 0
T2 12942 347 0 0
T3 355958 192 0 0
T7 83170 7173 0 0
T8 13189 731 0 0
T9 1035 53 0 0
T10 13475 1113 0 0
T11 432281 13199 0 0
T12 362617 25709 0 0
T13 6392 241 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 865945 0 0
T1 2648 33 0 0
T2 12942 39 0 0
T3 355958 49 0 0
T7 83170 957 0 0
T8 13189 1002 0 0
T9 1035 75 0 0
T10 13475 157 0 0
T11 432281 44 0 0
T12 362617 88 0 0
T13 6392 272 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 865945 0 0
T1 2648 33 0 0
T2 12942 39 0 0
T3 355958 49 0 0
T7 83170 957 0 0
T8 13189 1002 0 0
T9 1035 75 0 0
T10 13475 157 0 0
T11 432281 44 0 0
T12 362617 88 0 0
T13 6392 272 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2309650 0 0
T1 2648 34 0 0
T2 12942 71 0 0
T3 355958 57 0 0
T7 83170 1830 0 0
T8 13189 1274 0 0
T9 1035 98 0 0
T10 13475 256 0 0
T11 432281 2653 0 0
T12 362617 1227 0 0
T13 6392 304 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 865945 0 0
T1 2648 33 0 0
T2 12942 39 0 0
T3 355958 49 0 0
T7 83170 957 0 0
T8 13189 1002 0 0
T9 1035 75 0 0
T10 13475 157 0 0
T11 432281 44 0 0
T12 362617 88 0 0
T13 6392 272 0 0

Line Coverage for Instance : tb.dut.u_sm1_33.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T2 T8 T7  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_33.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT2,T8,T7
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT2,T8,T7

Branch Coverage for Instance : tb.dut.u_sm1_33.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T2,T8,T7
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_33.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 223032 0 0
GntImpliesValid_A 422133040 223032 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 223032 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 2735665 0 0
ReadyAndValidImplyGrant_A 422133040 223032 0 0
ReqAndReadyImplyGrant_A 422133040 223032 0 0
ReqImpliesValid_A 422133040 584495 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 223032 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 223032 0 0
T1 2648 14 0 0
T2 12942 17 0 0
T3 355958 12 0 0
T7 83170 235 0 0
T8 13189 252 0 0
T9 1035 0 0 0
T10 13475 34 0 0
T11 432281 10 0 0
T12 362617 30 0 0
T13 6392 80 0 0
T14 0 232 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 223032 0 0
T1 2648 14 0 0
T2 12942 17 0 0
T3 355958 12 0 0
T7 83170 235 0 0
T8 13189 252 0 0
T9 1035 0 0 0
T10 13475 34 0 0
T11 432281 10 0 0
T12 362617 30 0 0
T13 6392 80 0 0
T14 0 232 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 223032 0 0
T1 2648 14 0 0
T2 12942 17 0 0
T3 355958 12 0 0
T7 83170 235 0 0
T8 13189 252 0 0
T9 1035 0 0 0
T10 13475 34 0 0
T11 432281 10 0 0
T12 362617 30 0 0
T13 6392 80 0 0
T14 0 232 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2735665 0 0
T1 2648 15 0 0
T2 12942 131 0 0
T3 355958 45 0 0
T7 83170 1710 0 0
T8 13189 239 0 0
T9 1035 1 0 0
T10 13475 268 0 0
T11 432281 2631 0 0
T12 362617 8680 0 0
T13 6392 79 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 223032 0 0
T1 2648 14 0 0
T2 12942 17 0 0
T3 355958 12 0 0
T7 83170 235 0 0
T8 13189 252 0 0
T9 1035 0 0 0
T10 13475 34 0 0
T11 432281 10 0 0
T12 362617 30 0 0
T13 6392 80 0 0
T14 0 232 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 223032 0 0
T1 2648 14 0 0
T2 12942 17 0 0
T3 355958 12 0 0
T7 83170 235 0 0
T8 13189 252 0 0
T9 1035 0 0 0
T10 13475 34 0 0
T11 432281 10 0 0
T12 362617 30 0 0
T13 6392 80 0 0
T14 0 232 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 584495 0 0
T1 2648 14 0 0
T2 12942 41 0 0
T3 355958 12 0 0
T7 83170 300 0 0
T8 13189 266 0 0
T9 1035 0 0 0
T10 13475 41 0 0
T11 432281 10 0 0
T12 362617 248 0 0
T13 6392 82 0 0
T14 0 235 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 223032 0 0
T1 2648 14 0 0
T2 12942 17 0 0
T3 355958 12 0 0
T7 83170 235 0 0
T8 13189 252 0 0
T9 1035 0 0 0
T10 13475 34 0 0
T11 432281 10 0 0
T12 362617 30 0 0
T13 6392 80 0 0
T14 0 232 0 0

Line Coverage for Instance : tb.dut.u_sm1_34.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T1 T2 T8  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_34.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT1,T2,T8
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT1,T2,T8

Branch Coverage for Instance : tb.dut.u_sm1_34.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T1,T2,T8
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_34.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 215911 0 0
GntImpliesValid_A 422133040 215911 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 215911 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 2657769 0 0
ReadyAndValidImplyGrant_A 422133040 215911 0 0
ReqAndReadyImplyGrant_A 422133040 215911 0 0
ReqImpliesValid_A 422133040 536700 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 215911 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 215911 0 0
T1 2648 10 0 0
T2 12942 14 0 0
T3 355958 11 0 0
T7 83170 224 0 0
T8 13189 267 0 0
T9 1035 0 0 0
T10 13475 41 0 0
T11 432281 9 0 0
T12 362617 28 0 0
T13 6392 72 0 0
T14 0 195 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 215911 0 0
T1 2648 10 0 0
T2 12942 14 0 0
T3 355958 11 0 0
T7 83170 224 0 0
T8 13189 267 0 0
T9 1035 0 0 0
T10 13475 41 0 0
T11 432281 9 0 0
T12 362617 28 0 0
T13 6392 72 0 0
T14 0 195 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 215911 0 0
T1 2648 10 0 0
T2 12942 14 0 0
T3 355958 11 0 0
T7 83170 224 0 0
T8 13189 267 0 0
T9 1035 0 0 0
T10 13475 41 0 0
T11 432281 9 0 0
T12 362617 28 0 0
T13 6392 72 0 0
T14 0 195 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2657769 0 0
T1 2648 10 0 0
T2 12942 87 0 0
T3 355958 37 0 0
T7 83170 1659 0 0
T8 13189 252 0 0
T9 1035 1 0 0
T10 13475 279 0 0
T11 432281 3379 0 0
T12 362617 8425 0 0
T13 6392 71 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 215911 0 0
T1 2648 10 0 0
T2 12942 14 0 0
T3 355958 11 0 0
T7 83170 224 0 0
T8 13189 267 0 0
T9 1035 0 0 0
T10 13475 41 0 0
T11 432281 9 0 0
T12 362617 28 0 0
T13 6392 72 0 0
T14 0 195 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 215911 0 0
T1 2648 10 0 0
T2 12942 14 0 0
T3 355958 11 0 0
T7 83170 224 0 0
T8 13189 267 0 0
T9 1035 0 0 0
T10 13475 41 0 0
T11 432281 9 0 0
T12 362617 28 0 0
T13 6392 72 0 0
T14 0 195 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 536700 0 0
T1 2648 11 0 0
T2 12942 19 0 0
T3 355958 11 0 0
T7 83170 286 0 0
T8 13189 283 0 0
T9 1035 0 0 0
T10 13475 52 0 0
T11 432281 516 0 0
T12 362617 583 0 0
T13 6392 74 0 0
T14 0 199 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 215911 0 0
T1 2648 10 0 0
T2 12942 14 0 0
T3 355958 11 0 0
T7 83170 224 0 0
T8 13189 267 0 0
T9 1035 0 0 0
T10 13475 41 0 0
T11 432281 9 0 0
T12 362617 28 0 0
T13 6392 72 0 0
T14 0 195 0 0

Line Coverage for Instance : tb.dut.u_sm1_36.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T1 T8 T7  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_36.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT1,T8,T7
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT1,T8,T7

Branch Coverage for Instance : tb.dut.u_sm1_36.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T1,T8,T7
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_36.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 223770 0 0
GntImpliesValid_A 422133040 223770 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 223770 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 4714494 0 0
ReadyAndValidImplyGrant_A 422133040 223770 0 0
ReqAndReadyImplyGrant_A 422133040 223770 0 0
ReqImpliesValid_A 422133040 1185432 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 223770 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 223770 0 0
T1 2648 12 0 0
T2 12942 16 0 0
T3 355958 10 0 0
T7 83170 218 0 0
T8 13189 252 0 0
T9 1035 0 0 0
T10 13475 35 0 0
T11 432281 8 0 0
T12 362617 28 0 0
T13 6392 73 0 0
T14 0 189 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 223770 0 0
T1 2648 12 0 0
T2 12942 16 0 0
T3 355958 10 0 0
T7 83170 218 0 0
T8 13189 252 0 0
T9 1035 0 0 0
T10 13475 35 0 0
T11 432281 8 0 0
T12 362617 28 0 0
T13 6392 73 0 0
T14 0 189 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 223770 0 0
T1 2648 12 0 0
T2 12942 16 0 0
T3 355958 10 0 0
T7 83170 218 0 0
T8 13189 252 0 0
T9 1035 0 0 0
T10 13475 35 0 0
T11 432281 8 0 0
T12 362617 28 0 0
T13 6392 73 0 0
T14 0 189 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 4714494 0 0
T1 2648 185 0 0
T2 12942 183 0 0
T3 355958 133 0 0
T7 83170 1624 0 0
T8 13189 1058 0 0
T9 1035 0 0 0
T10 13475 1065 0 0
T11 432281 2404 0 0
T12 362617 2609 0 0
T13 6392 384 0 0
T14 0 717 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 223770 0 0
T1 2648 12 0 0
T2 12942 16 0 0
T3 355958 10 0 0
T7 83170 218 0 0
T8 13189 252 0 0
T9 1035 0 0 0
T10 13475 35 0 0
T11 432281 8 0 0
T12 362617 28 0 0
T13 6392 73 0 0
T14 0 189 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 223770 0 0
T1 2648 12 0 0
T2 12942 16 0 0
T3 355958 10 0 0
T7 83170 218 0 0
T8 13189 252 0 0
T9 1035 0 0 0
T10 13475 35 0 0
T11 432281 8 0 0
T12 362617 28 0 0
T13 6392 73 0 0
T14 0 189 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 1185432 0 0
T1 2648 53 0 0
T2 12942 16 0 0
T3 355958 10 0 0
T7 83170 328 0 0
T8 13189 337 0 0
T9 1035 0 0 0
T10 13475 79 0 0
T11 432281 8 0 0
T12 362617 96 0 0
T13 6392 100 0 0
T14 0 197 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 223770 0 0
T1 2648 12 0 0
T2 12942 16 0 0
T3 355958 10 0 0
T7 83170 218 0 0
T8 13189 252 0 0
T9 1035 0 0 0
T10 13475 35 0 0
T11 432281 8 0 0
T12 362617 28 0 0
T13 6392 73 0 0
T14 0 189 0 0

Line Coverage for Instance : tb.dut.u_sm1_38.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T1 T2 T3  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_38.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT1,T2,T3
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT1,T2,T3

Branch Coverage for Instance : tb.dut.u_sm1_38.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
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


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_38.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 213424 0 0
GntImpliesValid_A 422133040 213424 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 213424 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 3828131 0 0
ReadyAndValidImplyGrant_A 422133040 213424 0 0
ReqAndReadyImplyGrant_A 422133040 213424 0 0
ReqImpliesValid_A 422133040 909679 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 213424 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 213424 0 0
T1 2648 14 0 0
T2 12942 14 0 0
T3 355958 16 0 0
T7 83170 256 0 0
T8 13189 238 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 9 0 0
T12 362617 22 0 0
T13 6392 72 0 0
T14 0 226 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 213424 0 0
T1 2648 14 0 0
T2 12942 14 0 0
T3 355958 16 0 0
T7 83170 256 0 0
T8 13189 238 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 9 0 0
T12 362617 22 0 0
T13 6392 72 0 0
T14 0 226 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 213424 0 0
T1 2648 14 0 0
T2 12942 14 0 0
T3 355958 16 0 0
T7 83170 256 0 0
T8 13189 238 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 9 0 0
T12 362617 22 0 0
T13 6392 72 0 0
T14 0 226 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 3828131 0 0
T1 2648 76 0 0
T2 12942 478 0 0
T3 355958 205 0 0
T7 83170 1999 0 0
T8 13189 963 0 0
T9 1035 0 0 0
T10 13475 736 0 0
T11 432281 1390 0 0
T12 362617 3712 0 0
T13 6392 324 0 0
T14 0 805 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 213424 0 0
T1 2648 14 0 0
T2 12942 14 0 0
T3 355958 16 0 0
T7 83170 256 0 0
T8 13189 238 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 9 0 0
T12 362617 22 0 0
T13 6392 72 0 0
T14 0 226 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 213424 0 0
T1 2648 14 0 0
T2 12942 14 0 0
T3 355958 16 0 0
T7 83170 256 0 0
T8 13189 238 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 9 0 0
T12 362617 22 0 0
T13 6392 72 0 0
T14 0 226 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 909679 0 0
T1 2648 27 0 0
T2 12942 28 0 0
T3 355958 30 0 0
T7 83170 396 0 0
T8 13189 322 0 0
T9 1035 0 0 0
T10 13475 73 0 0
T11 432281 9 0 0
T12 362617 22 0 0
T13 6392 100 0 0
T14 0 236 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 213424 0 0
T1 2648 14 0 0
T2 12942 14 0 0
T3 355958 16 0 0
T7 83170 256 0 0
T8 13189 238 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 9 0 0
T12 362617 22 0 0
T13 6392 72 0 0
T14 0 226 0 0

Line Coverage for Instance : tb.dut.u_sm1_40.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T8 T7 T10  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_40.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT8,T7,T10
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT8,T7,T10

Branch Coverage for Instance : tb.dut.u_sm1_40.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T8,T7,T10
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_40.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 218183 0 0
GntImpliesValid_A 422133040 218183 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 218183 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 4496025 0 0
ReadyAndValidImplyGrant_A 422133040 218183 0 0
ReqAndReadyImplyGrant_A 422133040 218183 0 0
ReqImpliesValid_A 422133040 1087635 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 218183 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218183 0 0
T1 2648 12 0 0
T2 12942 6 0 0
T3 355958 7 0 0
T7 83170 246 0 0
T8 13189 240 0 0
T9 1035 0 0 0
T10 13475 36 0 0
T11 432281 9 0 0
T12 362617 26 0 0
T13 6392 64 0 0
T14 0 216 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218183 0 0
T1 2648 12 0 0
T2 12942 6 0 0
T3 355958 7 0 0
T7 83170 246 0 0
T8 13189 240 0 0
T9 1035 0 0 0
T10 13475 36 0 0
T11 432281 9 0 0
T12 362617 26 0 0
T13 6392 64 0 0
T14 0 216 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218183 0 0
T1 2648 12 0 0
T2 12942 6 0 0
T3 355958 7 0 0
T7 83170 246 0 0
T8 13189 240 0 0
T9 1035 0 0 0
T10 13475 36 0 0
T11 432281 9 0 0
T12 362617 26 0 0
T13 6392 64 0 0
T14 0 216 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 4496025 0 0
T1 2648 244 0 0
T2 12942 171 0 0
T3 355958 105 0 0
T7 83170 1427 0 0
T8 13189 905 0 0
T9 1035 0 0 0
T10 13475 549 0 0
T11 432281 1655 0 0
T12 362617 2613 0 0
T13 6392 395 0 0
T14 0 883 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218183 0 0
T1 2648 12 0 0
T2 12942 6 0 0
T3 355958 7 0 0
T7 83170 246 0 0
T8 13189 240 0 0
T9 1035 0 0 0
T10 13475 36 0 0
T11 432281 9 0 0
T12 362617 26 0 0
T13 6392 64 0 0
T14 0 216 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218183 0 0
T1 2648 12 0 0
T2 12942 6 0 0
T3 355958 7 0 0
T7 83170 246 0 0
T8 13189 240 0 0
T9 1035 0 0 0
T10 13475 36 0 0
T11 432281 9 0 0
T12 362617 26 0 0
T13 6392 64 0 0
T14 0 216 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 1087635 0 0
T1 2648 12 0 0
T2 12942 6 0 0
T3 355958 7 0 0
T7 83170 337 0 0
T8 13189 368 0 0
T9 1035 0 0 0
T10 13475 87 0 0
T11 432281 9 0 0
T12 362617 26 0 0
T13 6392 100 0 0
T14 0 227 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218183 0 0
T1 2648 12 0 0
T2 12942 6 0 0
T3 355958 7 0 0
T7 83170 246 0 0
T8 13189 240 0 0
T9 1035 0 0 0
T10 13475 36 0 0
T11 432281 9 0 0
T12 362617 26 0 0
T13 6392 64 0 0
T14 0 216 0 0

Line Coverage for Instance : tb.dut.u_sm1_42.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T1 T2 T8  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_42.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT1,T2,T8
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT1,T2,T8

Branch Coverage for Instance : tb.dut.u_sm1_42.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T1,T2,T8
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_42.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 218754 0 0
GntImpliesValid_A 422133040 218754 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 218754 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 4245184 0 0
ReadyAndValidImplyGrant_A 422133040 218754 0 0
ReqAndReadyImplyGrant_A 422133040 218754 0 0
ReqImpliesValid_A 422133040 1059146 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 218754 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218754 0 0
T1 2648 13 0 0
T2 12942 10 0 0
T3 355958 10 0 0
T7 83170 220 0 0
T8 13189 215 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 20 0 0
T12 362617 21 0 0
T13 6392 79 0 0
T14 0 187 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218754 0 0
T1 2648 13 0 0
T2 12942 10 0 0
T3 355958 10 0 0
T7 83170 220 0 0
T8 13189 215 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 20 0 0
T12 362617 21 0 0
T13 6392 79 0 0
T14 0 187 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218754 0 0
T1 2648 13 0 0
T2 12942 10 0 0
T3 355958 10 0 0
T7 83170 220 0 0
T8 13189 215 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 20 0 0
T12 362617 21 0 0
T13 6392 79 0 0
T14 0 187 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 4245184 0 0
T1 2648 68 0 0
T2 12942 112 0 0
T3 355958 242 0 0
T7 83170 3933 0 0
T8 13189 906 0 0
T9 1035 0 0 0
T10 13475 506 0 0
T11 432281 3326 0 0
T12 362617 3917 0 0
T13 6392 438 0 0
T14 0 1267 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218754 0 0
T1 2648 13 0 0
T2 12942 10 0 0
T3 355958 10 0 0
T7 83170 220 0 0
T8 13189 215 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 20 0 0
T12 362617 21 0 0
T13 6392 79 0 0
T14 0 187 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218754 0 0
T1 2648 13 0 0
T2 12942 10 0 0
T3 355958 10 0 0
T7 83170 220 0 0
T8 13189 215 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 20 0 0
T12 362617 21 0 0
T13 6392 79 0 0
T14 0 187 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 1059146 0 0
T1 2648 25 0 0
T2 12942 25 0 0
T3 355958 10 0 0
T7 83170 597 0 0
T8 13189 284 0 0
T9 1035 0 0 0
T10 13475 63 0 0
T11 432281 916 0 0
T12 362617 21 0 0
T13 6392 111 0 0
T14 0 248 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218754 0 0
T1 2648 13 0 0
T2 12942 10 0 0
T3 355958 10 0 0
T7 83170 220 0 0
T8 13189 215 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 20 0 0
T12 362617 21 0 0
T13 6392 79 0 0
T14 0 187 0 0

Line Coverage for Instance : tb.dut.u_sm1_43.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T3 T8 T9  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_43.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT3,T8,T9
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT3,T8,T9

Branch Coverage for Instance : tb.dut.u_sm1_43.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T3,T8,T9
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_43.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 224274 0 0
GntImpliesValid_A 422133040 224274 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 224274 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 2702066 0 0
ReadyAndValidImplyGrant_A 422133040 224274 0 0
ReqAndReadyImplyGrant_A 422133040 224274 0 0
ReqImpliesValid_A 422133040 556772 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 224274 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 224274 0 0
T1 2648 12 0 0
T2 12942 10 0 0
T3 355958 9 0 0
T7 83170 240 0 0
T8 13189 263 0 0
T9 1035 468 0 0
T10 13475 28 0 0
T11 432281 13 0 0
T12 362617 30 0 0
T13 6392 61 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 224274 0 0
T1 2648 12 0 0
T2 12942 10 0 0
T3 355958 9 0 0
T7 83170 240 0 0
T8 13189 263 0 0
T9 1035 468 0 0
T10 13475 28 0 0
T11 432281 13 0 0
T12 362617 30 0 0
T13 6392 61 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 224274 0 0
T1 2648 12 0 0
T2 12942 10 0 0
T3 355958 9 0 0
T7 83170 240 0 0
T8 13189 263 0 0
T9 1035 468 0 0
T10 13475 28 0 0
T11 432281 13 0 0
T12 362617 30 0 0
T13 6392 61 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2702066 0 0
T1 2648 13 0 0
T2 12942 79 0 0
T3 355958 33 0 0
T7 83170 1819 0 0
T8 13189 249 0 0
T9 1035 26 0 0
T10 13475 184 0 0
T11 432281 5454 0 0
T12 362617 9650 0 0
T13 6392 60 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 224274 0 0
T1 2648 12 0 0
T2 12942 10 0 0
T3 355958 9 0 0
T7 83170 240 0 0
T8 13189 263 0 0
T9 1035 468 0 0
T10 13475 28 0 0
T11 432281 13 0 0
T12 362617 30 0 0
T13 6392 61 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 224274 0 0
T1 2648 12 0 0
T2 12942 10 0 0
T3 355958 9 0 0
T7 83170 240 0 0
T8 13189 263 0 0
T9 1035 468 0 0
T10 13475 28 0 0
T11 432281 13 0 0
T12 362617 30 0 0
T13 6392 61 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 556772 0 0
T1 2648 12 0 0
T2 12942 10 0 0
T3 355958 13 0 0
T7 83170 326 0 0
T8 13189 278 0 0
T9 1035 911 0 0
T10 13475 35 0 0
T11 432281 13 0 0
T12 362617 30 0 0
T13 6392 63 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 224274 0 0
T1 2648 12 0 0
T2 12942 10 0 0
T3 355958 9 0 0
T7 83170 240 0 0
T8 13189 263 0 0
T9 1035 468 0 0
T10 13475 28 0 0
T11 432281 13 0 0
T12 362617 30 0 0
T13 6392 61 0 0

Line Coverage for Instance : tb.dut.u_sm1_44.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T2 T3 T8  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_44.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT2,T3,T8
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT2,T3,T8

Branch Coverage for Instance : tb.dut.u_sm1_44.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T2,T3,T8
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_44.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 220554 0 0
GntImpliesValid_A 422133040 220554 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 220554 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 2775409 0 0
ReadyAndValidImplyGrant_A 422133040 220554 0 0
ReqAndReadyImplyGrant_A 422133040 220554 0 0
ReqImpliesValid_A 422133040 521773 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 220554 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 220554 0 0
T1 2648 16 0 0
T2 12942 12 0 0
T3 355958 17 0 0
T7 83170 234 0 0
T8 13189 221 0 0
T9 1035 0 0 0
T10 13475 49 0 0
T11 432281 14 0 0
T12 362617 27 0 0
T13 6392 79 0 0
T14 0 220 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 220554 0 0
T1 2648 16 0 0
T2 12942 12 0 0
T3 355958 17 0 0
T7 83170 234 0 0
T8 13189 221 0 0
T9 1035 0 0 0
T10 13475 49 0 0
T11 432281 14 0 0
T12 362617 27 0 0
T13 6392 79 0 0
T14 0 220 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 220554 0 0
T1 2648 16 0 0
T2 12942 12 0 0
T3 355958 17 0 0
T7 83170 234 0 0
T8 13189 221 0 0
T9 1035 0 0 0
T10 13475 49 0 0
T11 432281 14 0 0
T12 362617 27 0 0
T13 6392 79 0 0
T14 0 220 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2775409 0 0
T1 2648 17 0 0
T2 12942 86 0 0
T3 355958 84 0 0
T7 83170 1705 0 0
T8 13189 201 0 0
T9 1035 1 0 0
T10 13475 398 0 0
T11 432281 6045 0 0
T12 362617 7505 0 0
T13 6392 75 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 220554 0 0
T1 2648 16 0 0
T2 12942 12 0 0
T3 355958 17 0 0
T7 83170 234 0 0
T8 13189 221 0 0
T9 1035 0 0 0
T10 13475 49 0 0
T11 432281 14 0 0
T12 362617 27 0 0
T13 6392 79 0 0
T14 0 220 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 220554 0 0
T1 2648 16 0 0
T2 12942 12 0 0
T3 355958 17 0 0
T7 83170 234 0 0
T8 13189 221 0 0
T9 1035 0 0 0
T10 13475 49 0 0
T11 432281 14 0 0
T12 362617 27 0 0
T13 6392 79 0 0
T14 0 220 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 521773 0 0
T1 2648 16 0 0
T2 12942 19 0 0
T3 355958 19 0 0
T7 83170 330 0 0
T8 13189 242 0 0
T9 1035 0 0 0
T10 13475 68 0 0
T11 432281 14 0 0
T12 362617 341 0 0
T13 6392 84 0 0
T14 0 225 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 220554 0 0
T1 2648 16 0 0
T2 12942 12 0 0
T3 355958 17 0 0
T7 83170 234 0 0
T8 13189 221 0 0
T9 1035 0 0 0
T10 13475 49 0 0
T11 432281 14 0 0
T12 362617 27 0 0
T13 6392 79 0 0
T14 0 220 0 0

Line Coverage for Instance : tb.dut.u_sm1_45.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T1 T3 T8  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_45.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT1,T3,T8
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT1,T3,T8

Branch Coverage for Instance : tb.dut.u_sm1_45.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T1,T3,T8
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_45.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 212409 0 0
GntImpliesValid_A 422133040 212409 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 212409 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 2730881 0 0
ReadyAndValidImplyGrant_A 422133040 212409 0 0
ReqAndReadyImplyGrant_A 422133040 212409 0 0
ReqImpliesValid_A 422133040 508038 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 212409 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 212409 0 0
T1 2648 15 0 0
T2 12942 14 0 0
T3 355958 12 0 0
T7 83170 273 0 0
T8 13189 228 0 0
T9 1035 0 0 0
T10 13475 38 0 0
T11 432281 15 0 0
T12 362617 28 0 0
T13 6392 69 0 0
T14 0 199 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 212409 0 0
T1 2648 15 0 0
T2 12942 14 0 0
T3 355958 12 0 0
T7 83170 273 0 0
T8 13189 228 0 0
T9 1035 0 0 0
T10 13475 38 0 0
T11 432281 15 0 0
T12 362617 28 0 0
T13 6392 69 0 0
T14 0 199 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 212409 0 0
T1 2648 15 0 0
T2 12942 14 0 0
T3 355958 12 0 0
T7 83170 273 0 0
T8 13189 228 0 0
T9 1035 0 0 0
T10 13475 38 0 0
T11 432281 15 0 0
T12 362617 28 0 0
T13 6392 69 0 0
T14 0 199 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2730881 0 0
T1 2648 14 0 0
T2 12942 142 0 0
T3 355958 66 0 0
T7 83170 1934 0 0
T8 13189 212 0 0
T9 1035 1 0 0
T10 13475 309 0 0
T11 432281 5128 0 0
T12 362617 9156 0 0
T13 6392 66 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 212409 0 0
T1 2648 15 0 0
T2 12942 14 0 0
T3 355958 12 0 0
T7 83170 273 0 0
T8 13189 228 0 0
T9 1035 0 0 0
T10 13475 38 0 0
T11 432281 15 0 0
T12 362617 28 0 0
T13 6392 69 0 0
T14 0 199 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 212409 0 0
T1 2648 15 0 0
T2 12942 14 0 0
T3 355958 12 0 0
T7 83170 273 0 0
T8 13189 228 0 0
T9 1035 0 0 0
T10 13475 38 0 0
T11 432281 15 0 0
T12 362617 28 0 0
T13 6392 69 0 0
T14 0 199 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 508038 0 0
T1 2648 17 0 0
T2 12942 14 0 0
T3 355958 15 0 0
T7 83170 414 0 0
T8 13189 245 0 0
T9 1035 0 0 0
T10 13475 43 0 0
T11 432281 15 0 0
T12 362617 1064 0 0
T13 6392 73 0 0
T14 0 199 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 212409 0 0
T1 2648 15 0 0
T2 12942 14 0 0
T3 355958 12 0 0
T7 83170 273 0 0
T8 13189 228 0 0
T9 1035 0 0 0
T10 13475 38 0 0
T11 432281 15 0 0
T12 362617 28 0 0
T13 6392 69 0 0
T14 0 199 0 0

Line Coverage for Instance : tb.dut.u_sm1_46.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T1 T3 T8  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_46.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT1,T3,T8
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT1,T3,T8

Branch Coverage for Instance : tb.dut.u_sm1_46.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T1,T3,T8
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_46.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 222479 0 0
GntImpliesValid_A 422133040 222479 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 222479 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 2750687 0 0
ReadyAndValidImplyGrant_A 422133040 222479 0 0
ReqAndReadyImplyGrant_A 422133040 222479 0 0
ReqImpliesValid_A 422133040 580692 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 222479 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 222479 0 0
T1 2648 10 0 0
T2 12942 14 0 0
T3 355958 10 0 0
T7 83170 248 0 0
T8 13189 212 0 0
T9 1035 0 0 0
T10 13475 34 0 0
T11 432281 11 0 0
T12 362617 29 0 0
T13 6392 72 0 0
T14 0 210 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 222479 0 0
T1 2648 10 0 0
T2 12942 14 0 0
T3 355958 10 0 0
T7 83170 248 0 0
T8 13189 212 0 0
T9 1035 0 0 0
T10 13475 34 0 0
T11 432281 11 0 0
T12 362617 29 0 0
T13 6392 72 0 0
T14 0 210 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 222479 0 0
T1 2648 10 0 0
T2 12942 14 0 0
T3 355958 10 0 0
T7 83170 248 0 0
T8 13189 212 0 0
T9 1035 0 0 0
T10 13475 34 0 0
T11 432281 11 0 0
T12 362617 29 0 0
T13 6392 72 0 0
T14 0 210 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2750687 0 0
T1 2648 10 0 0
T2 12942 100 0 0
T3 355958 35 0 0
T7 83170 1799 0 0
T8 13189 204 0 0
T9 1035 1 0 0
T10 13475 269 0 0
T11 432281 2851 0 0
T12 362617 6450 0 0
T13 6392 65 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 222479 0 0
T1 2648 10 0 0
T2 12942 14 0 0
T3 355958 10 0 0
T7 83170 248 0 0
T8 13189 212 0 0
T9 1035 0 0 0
T10 13475 34 0 0
T11 432281 11 0 0
T12 362617 29 0 0
T13 6392 72 0 0
T14 0 210 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 222479 0 0
T1 2648 10 0 0
T2 12942 14 0 0
T3 355958 10 0 0
T7 83170 248 0 0
T8 13189 212 0 0
T9 1035 0 0 0
T10 13475 34 0 0
T11 432281 11 0 0
T12 362617 29 0 0
T13 6392 72 0 0
T14 0 210 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 580692 0 0
T1 2648 11 0 0
T2 12942 14 0 0
T3 355958 19 0 0
T7 83170 362 0 0
T8 13189 221 0 0
T9 1035 0 0 0
T10 13475 44 0 0
T11 432281 11 0 0
T12 362617 1550 0 0
T13 6392 80 0 0
T14 0 212 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 222479 0 0
T1 2648 10 0 0
T2 12942 14 0 0
T3 355958 10 0 0
T7 83170 248 0 0
T8 13189 212 0 0
T9 1035 0 0 0
T10 13475 34 0 0
T11 432281 11 0 0
T12 362617 29 0 0
T13 6392 72 0 0
T14 0 210 0 0

Line Coverage for Instance : tb.dut.u_sm1_47.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T2 T3 T8  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_47.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT2,T3,T8
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT2,T3,T8

Branch Coverage for Instance : tb.dut.u_sm1_47.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T2,T3,T8
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_47.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 216871 0 0
GntImpliesValid_A 422133040 216871 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 216871 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 2749060 0 0
ReadyAndValidImplyGrant_A 422133040 216871 0 0
ReqAndReadyImplyGrant_A 422133040 216871 0 0
ReqImpliesValid_A 422133040 571870 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 216871 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 216871 0 0
T1 2648 9 0 0
T2 12942 17 0 0
T3 355958 8 0 0
T7 83170 256 0 0
T8 13189 245 0 0
T9 1035 0 0 0
T10 13475 32 0 0
T11 432281 13 0 0
T12 362617 19 0 0
T13 6392 78 0 0
T14 0 198 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 216871 0 0
T1 2648 9 0 0
T2 12942 17 0 0
T3 355958 8 0 0
T7 83170 256 0 0
T8 13189 245 0 0
T9 1035 0 0 0
T10 13475 32 0 0
T11 432281 13 0 0
T12 362617 19 0 0
T13 6392 78 0 0
T14 0 198 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 216871 0 0
T1 2648 9 0 0
T2 12942 17 0 0
T3 355958 8 0 0
T7 83170 256 0 0
T8 13189 245 0 0
T9 1035 0 0 0
T10 13475 32 0 0
T11 432281 13 0 0
T12 362617 19 0 0
T13 6392 78 0 0
T14 0 198 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2749060 0 0
T1 2648 10 0 0
T2 12942 162 0 0
T3 355958 32 0 0
T7 83170 1922 0 0
T8 13189 236 0 0
T9 1035 1 0 0
T10 13475 227 0 0
T11 432281 3961 0 0
T12 362617 5099 0 0
T13 6392 75 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 216871 0 0
T1 2648 9 0 0
T2 12942 17 0 0
T3 355958 8 0 0
T7 83170 256 0 0
T8 13189 245 0 0
T9 1035 0 0 0
T10 13475 32 0 0
T11 432281 13 0 0
T12 362617 19 0 0
T13 6392 78 0 0
T14 0 198 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 216871 0 0
T1 2648 9 0 0
T2 12942 17 0 0
T3 355958 8 0 0
T7 83170 256 0 0
T8 13189 245 0 0
T9 1035 0 0 0
T10 13475 32 0 0
T11 432281 13 0 0
T12 362617 19 0 0
T13 6392 78 0 0
T14 0 198 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 571870 0 0
T1 2648 9 0 0
T2 12942 26 0 0
T3 355958 14 0 0
T7 83170 316 0 0
T8 13189 255 0 0
T9 1035 0 0 0
T10 13475 43 0 0
T11 432281 13 0 0
T12 362617 19 0 0
T13 6392 82 0 0
T14 0 200 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 216871 0 0
T1 2648 9 0 0
T2 12942 17 0 0
T3 355958 8 0 0
T7 83170 256 0 0
T8 13189 245 0 0
T9 1035 0 0 0
T10 13475 32 0 0
T11 432281 13 0 0
T12 362617 19 0 0
T13 6392 78 0 0
T14 0 198 0 0

Line Coverage for Instance : tb.dut.u_sm1_48.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T1 T2 T8  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_48.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT1,T2,T8
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT1,T2,T8

Branch Coverage for Instance : tb.dut.u_sm1_48.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T1,T2,T8
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_48.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 218919 0 0
GntImpliesValid_A 422133040 218919 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 218919 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 2713834 0 0
ReadyAndValidImplyGrant_A 422133040 218919 0 0
ReqAndReadyImplyGrant_A 422133040 218919 0 0
ReqImpliesValid_A 422133040 529703 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 218919 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218919 0 0
T1 2648 17 0 0
T2 12942 17 0 0
T3 355958 9 0 0
T7 83170 228 0 0
T8 13189 238 0 0
T9 1035 0 0 0
T10 13475 31 0 0
T11 432281 17 0 0
T12 362617 35 0 0
T13 6392 73 0 0
T14 0 206 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218919 0 0
T1 2648 17 0 0
T2 12942 17 0 0
T3 355958 9 0 0
T7 83170 228 0 0
T8 13189 238 0 0
T9 1035 0 0 0
T10 13475 31 0 0
T11 432281 17 0 0
T12 362617 35 0 0
T13 6392 73 0 0
T14 0 206 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218919 0 0
T1 2648 17 0 0
T2 12942 17 0 0
T3 355958 9 0 0
T7 83170 228 0 0
T8 13189 238 0 0
T9 1035 0 0 0
T10 13475 31 0 0
T11 432281 17 0 0
T12 362617 35 0 0
T13 6392 73 0 0
T14 0 206 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2713834 0 0
T1 2648 16 0 0
T2 12942 143 0 0
T3 355958 37 0 0
T7 83170 1642 0 0
T8 13189 229 0 0
T9 1035 1 0 0
T10 13475 254 0 0
T11 432281 5892 0 0
T12 362617 10184 0 0
T13 6392 71 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218919 0 0
T1 2648 17 0 0
T2 12942 17 0 0
T3 355958 9 0 0
T7 83170 228 0 0
T8 13189 238 0 0
T9 1035 0 0 0
T10 13475 31 0 0
T11 432281 17 0 0
T12 362617 35 0 0
T13 6392 73 0 0
T14 0 206 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218919 0 0
T1 2648 17 0 0
T2 12942 17 0 0
T3 355958 9 0 0
T7 83170 228 0 0
T8 13189 238 0 0
T9 1035 0 0 0
T10 13475 31 0 0
T11 432281 17 0 0
T12 362617 35 0 0
T13 6392 73 0 0
T14 0 206 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 529703 0 0
T1 2648 19 0 0
T2 12942 19 0 0
T3 355958 9 0 0
T7 83170 307 0 0
T8 13189 248 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 317 0 0
T12 362617 426 0 0
T13 6392 76 0 0
T14 0 209 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218919 0 0
T1 2648 17 0 0
T2 12942 17 0 0
T3 355958 9 0 0
T7 83170 228 0 0
T8 13189 238 0 0
T9 1035 0 0 0
T10 13475 31 0 0
T11 432281 17 0 0
T12 362617 35 0 0
T13 6392 73 0 0
T14 0 206 0 0

Line Coverage for Instance : tb.dut.u_sm1_49.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T2 T8 T7  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_49.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT2,T8,T7
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT2,T8,T7

Branch Coverage for Instance : tb.dut.u_sm1_49.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T2,T8,T7
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_49.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 221534 0 0
GntImpliesValid_A 422133040 221534 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 221534 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 2805258 0 0
ReadyAndValidImplyGrant_A 422133040 221534 0 0
ReqAndReadyImplyGrant_A 422133040 221534 0 0
ReqImpliesValid_A 422133040 525431 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 221534 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 221534 0 0
T1 2648 16 0 0
T2 12942 8 0 0
T3 355958 8 0 0
T7 83170 232 0 0
T8 13189 231 0 0
T9 1035 0 0 0
T10 13475 45 0 0
T11 432281 11 0 0
T12 362617 25 0 0
T13 6392 60 0 0
T14 0 200 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 221534 0 0
T1 2648 16 0 0
T2 12942 8 0 0
T3 355958 8 0 0
T7 83170 232 0 0
T8 13189 231 0 0
T9 1035 0 0 0
T10 13475 45 0 0
T11 432281 11 0 0
T12 362617 25 0 0
T13 6392 60 0 0
T14 0 200 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 221534 0 0
T1 2648 16 0 0
T2 12942 8 0 0
T3 355958 8 0 0
T7 83170 232 0 0
T8 13189 231 0 0
T9 1035 0 0 0
T10 13475 45 0 0
T11 432281 11 0 0
T12 362617 25 0 0
T13 6392 60 0 0
T14 0 200 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2805258 0 0
T1 2648 17 0 0
T2 12942 58 0 0
T3 355958 30 0 0
T7 83170 1789 0 0
T8 13189 221 0 0
T9 1035 1 0 0
T10 13475 358 0 0
T11 432281 3479 0 0
T12 362617 6585 0 0
T13 6392 60 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 221534 0 0
T1 2648 16 0 0
T2 12942 8 0 0
T3 355958 8 0 0
T7 83170 232 0 0
T8 13189 231 0 0
T9 1035 0 0 0
T10 13475 45 0 0
T11 432281 11 0 0
T12 362617 25 0 0
T13 6392 60 0 0
T14 0 200 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 221534 0 0
T1 2648 16 0 0
T2 12942 8 0 0
T3 355958 8 0 0
T7 83170 232 0 0
T8 13189 231 0 0
T9 1035 0 0 0
T10 13475 45 0 0
T11 432281 11 0 0
T12 362617 25 0 0
T13 6392 60 0 0
T14 0 200 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 525431 0 0
T1 2648 16 0 0
T2 12942 14 0 0
T3 355958 8 0 0
T7 83170 390 0 0
T8 13189 242 0 0
T9 1035 0 0 0
T10 13475 60 0 0
T11 432281 11 0 0
T12 362617 876 0 0
T13 6392 61 0 0
T14 0 203 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 221534 0 0
T1 2648 16 0 0
T2 12942 8 0 0
T3 355958 8 0 0
T7 83170 232 0 0
T8 13189 231 0 0
T9 1035 0 0 0
T10 13475 45 0 0
T11 432281 11 0 0
T12 362617 25 0 0
T13 6392 60 0 0
T14 0 200 0 0

Line Coverage for Instance : tb.dut.u_sm1_50.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T1 T8 T7  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_50.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT1,T8,T7
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT1,T8,T7

Branch Coverage for Instance : tb.dut.u_sm1_50.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T1,T8,T7
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_50.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 228645 0 0
GntImpliesValid_A 422133040 228645 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 228645 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 2694396 0 0
ReadyAndValidImplyGrant_A 422133040 228645 0 0
ReqAndReadyImplyGrant_A 422133040 228645 0 0
ReqImpliesValid_A 422133040 614200 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 228645 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 228645 0 0
T1 2648 17 0 0
T2 12942 10 0 0
T3 355958 10 0 0
T7 83170 235 0 0
T8 13189 210 0 0
T9 1035 0 0 0
T10 13475 50 0 0
T11 432281 16 0 0
T12 362617 31 0 0
T13 6392 85 0 0
T14 0 197 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 228645 0 0
T1 2648 17 0 0
T2 12942 10 0 0
T3 355958 10 0 0
T7 83170 235 0 0
T8 13189 210 0 0
T9 1035 0 0 0
T10 13475 50 0 0
T11 432281 16 0 0
T12 362617 31 0 0
T13 6392 85 0 0
T14 0 197 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 228645 0 0
T1 2648 17 0 0
T2 12942 10 0 0
T3 355958 10 0 0
T7 83170 235 0 0
T8 13189 210 0 0
T9 1035 0 0 0
T10 13475 50 0 0
T11 432281 16 0 0
T12 362617 31 0 0
T13 6392 85 0 0
T14 0 197 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2694396 0 0
T1 2648 17 0 0
T2 12942 72 0 0
T3 355958 63 0 0
T7 83170 1656 0 0
T8 13189 197 0 0
T9 1035 1 0 0
T10 13475 291 0 0
T11 432281 5996 0 0
T12 362617 9430 0 0
T13 6392 80 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 228645 0 0
T1 2648 17 0 0
T2 12942 10 0 0
T3 355958 10 0 0
T7 83170 235 0 0
T8 13189 210 0 0
T9 1035 0 0 0
T10 13475 50 0 0
T11 432281 16 0 0
T12 362617 31 0 0
T13 6392 85 0 0
T14 0 197 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 228645 0 0
T1 2648 17 0 0
T2 12942 10 0 0
T3 355958 10 0 0
T7 83170 235 0 0
T8 13189 210 0 0
T9 1035 0 0 0
T10 13475 50 0 0
T11 432281 16 0 0
T12 362617 31 0 0
T13 6392 85 0 0
T14 0 197 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 614200 0 0
T1 2648 18 0 0
T2 12942 10 0 0
T3 355958 10 0 0
T7 83170 302 0 0
T8 13189 224 0 0
T9 1035 0 0 0
T10 13475 82 0 0
T11 432281 16 0 0
T12 362617 170 0 0
T13 6392 91 0 0
T14 0 200 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 228645 0 0
T1 2648 17 0 0
T2 12942 10 0 0
T3 355958 10 0 0
T7 83170 235 0 0
T8 13189 210 0 0
T9 1035 0 0 0
T10 13475 50 0 0
T11 432281 16 0 0
T12 362617 31 0 0
T13 6392 85 0 0
T14 0 197 0 0

Line Coverage for Instance : tb.dut.u_sm1_51.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T3 T8 T7  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_51.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT3,T8,T7
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT3,T8,T7

Branch Coverage for Instance : tb.dut.u_sm1_51.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T3,T8,T7
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_51.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 240147 0 0
GntImpliesValid_A 422133040 240147 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 240147 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 2828845 0 0
ReadyAndValidImplyGrant_A 422133040 240147 0 0
ReqAndReadyImplyGrant_A 422133040 240147 0 0
ReqImpliesValid_A 422133040 578245 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 240147 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 240147 0 0
T1 2648 14 0 0
T2 12942 15 0 0
T3 355958 13 0 0
T7 83170 254 0 0
T8 13189 249 0 0
T9 1035 0 0 0
T10 13475 39 0 0
T11 432281 15 0 0
T12 362617 23 0 0
T13 6392 107 0 0
T14 0 206 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 240147 0 0
T1 2648 14 0 0
T2 12942 15 0 0
T3 355958 13 0 0
T7 83170 254 0 0
T8 13189 249 0 0
T9 1035 0 0 0
T10 13475 39 0 0
T11 432281 15 0 0
T12 362617 23 0 0
T13 6392 107 0 0
T14 0 206 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 240147 0 0
T1 2648 14 0 0
T2 12942 15 0 0
T3 355958 13 0 0
T7 83170 254 0 0
T8 13189 249 0 0
T9 1035 0 0 0
T10 13475 39 0 0
T11 432281 15 0 0
T12 362617 23 0 0
T13 6392 107 0 0
T14 0 206 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2828845 0 0
T1 2648 15 0 0
T2 12942 109 0 0
T3 355958 57 0 0
T7 83170 1966 0 0
T8 13189 235 0 0
T9 1035 1 0 0
T10 13475 249 0 0
T11 432281 5633 0 0
T12 362617 8341 0 0
T13 6392 101 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 240147 0 0
T1 2648 14 0 0
T2 12942 15 0 0
T3 355958 13 0 0
T7 83170 254 0 0
T8 13189 249 0 0
T9 1035 0 0 0
T10 13475 39 0 0
T11 432281 15 0 0
T12 362617 23 0 0
T13 6392 107 0 0
T14 0 206 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 240147 0 0
T1 2648 14 0 0
T2 12942 15 0 0
T3 355958 13 0 0
T7 83170 254 0 0
T8 13189 249 0 0
T9 1035 0 0 0
T10 13475 39 0 0
T11 432281 15 0 0
T12 362617 23 0 0
T13 6392 107 0 0
T14 0 206 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 578245 0 0
T1 2648 14 0 0
T2 12942 15 0 0
T3 355958 15 0 0
T7 83170 356 0 0
T8 13189 264 0 0
T9 1035 0 0 0
T10 13475 89 0 0
T11 432281 242 0 0
T12 362617 23 0 0
T13 6392 114 0 0
T14 0 206 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 240147 0 0
T1 2648 14 0 0
T2 12942 15 0 0
T3 355958 13 0 0
T7 83170 254 0 0
T8 13189 249 0 0
T9 1035 0 0 0
T10 13475 39 0 0
T11 432281 15 0 0
T12 362617 23 0 0
T13 6392 107 0 0
T14 0 206 0 0

Line Coverage for Instance : tb.dut.u_sm1_52.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T3 T8 T7  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_52.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT3,T8,T7
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT3,T8,T7

Branch Coverage for Instance : tb.dut.u_sm1_52.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T3,T8,T7
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_52.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 217523 0 0
GntImpliesValid_A 422133040 217523 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 217523 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 2751255 0 0
ReadyAndValidImplyGrant_A 422133040 217523 0 0
ReqAndReadyImplyGrant_A 422133040 217523 0 0
ReqImpliesValid_A 422133040 561093 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 217523 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 217523 0 0
T1 2648 6 0 0
T2 12942 14 0 0
T3 355958 11 0 0
T7 83170 235 0 0
T8 13189 253 0 0
T9 1035 0 0 0
T10 13475 24 0 0
T11 432281 7 0 0
T12 362617 23 0 0
T13 6392 69 0 0
T14 0 193 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 217523 0 0
T1 2648 6 0 0
T2 12942 14 0 0
T3 355958 11 0 0
T7 83170 235 0 0
T8 13189 253 0 0
T9 1035 0 0 0
T10 13475 24 0 0
T11 432281 7 0 0
T12 362617 23 0 0
T13 6392 69 0 0
T14 0 193 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 217523 0 0
T1 2648 6 0 0
T2 12942 14 0 0
T3 355958 11 0 0
T7 83170 235 0 0
T8 13189 253 0 0
T9 1035 0 0 0
T10 13475 24 0 0
T11 432281 7 0 0
T12 362617 23 0 0
T13 6392 69 0 0
T14 0 193 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2751255 0 0
T1 2648 7 0 0
T2 12942 112 0 0
T3 355958 68 0 0
T7 83170 1671 0 0
T8 13189 240 0 0
T9 1035 1 0 0
T10 13475 181 0 0
T11 432281 2005 0 0
T12 362617 8202 0 0
T13 6392 68 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 217523 0 0
T1 2648 6 0 0
T2 12942 14 0 0
T3 355958 11 0 0
T7 83170 235 0 0
T8 13189 253 0 0
T9 1035 0 0 0
T10 13475 24 0 0
T11 432281 7 0 0
T12 362617 23 0 0
T13 6392 69 0 0
T14 0 193 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 217523 0 0
T1 2648 6 0 0
T2 12942 14 0 0
T3 355958 11 0 0
T7 83170 235 0 0
T8 13189 253 0 0
T9 1035 0 0 0
T10 13475 24 0 0
T11 432281 7 0 0
T12 362617 23 0 0
T13 6392 69 0 0
T14 0 193 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 561093 0 0
T1 2648 6 0 0
T2 12942 14 0 0
T3 355958 16 0 0
T7 83170 326 0 0
T8 13189 267 0 0
T9 1035 0 0 0
T10 13475 27 0 0
T11 432281 7 0 0
T12 362617 712 0 0
T13 6392 71 0 0
T14 0 195 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 217523 0 0
T1 2648 6 0 0
T2 12942 14 0 0
T3 355958 11 0 0
T7 83170 235 0 0
T8 13189 253 0 0
T9 1035 0 0 0
T10 13475 24 0 0
T11 432281 7 0 0
T12 362617 23 0 0
T13 6392 69 0 0
T14 0 193 0 0

Line Coverage for Instance : tb.dut.u_sm1_53.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T3 T8 T7  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_53.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT3,T8,T7
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT3,T8,T7

Branch Coverage for Instance : tb.dut.u_sm1_53.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T3,T8,T7
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_53.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 224921 0 0
GntImpliesValid_A 422133040 224921 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 224921 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 2795588 0 0
ReadyAndValidImplyGrant_A 422133040 224921 0 0
ReqAndReadyImplyGrant_A 422133040 224921 0 0
ReqImpliesValid_A 422133040 545662 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 224921 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 224921 0 0
T1 2648 8 0 0
T2 12942 10 0 0
T3 355958 21 0 0
T7 83170 246 0 0
T8 13189 238 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 11 0 0
T12 362617 32 0 0
T13 6392 64 0 0
T14 0 193 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 224921 0 0
T1 2648 8 0 0
T2 12942 10 0 0
T3 355958 21 0 0
T7 83170 246 0 0
T8 13189 238 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 11 0 0
T12 362617 32 0 0
T13 6392 64 0 0
T14 0 193 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 224921 0 0
T1 2648 8 0 0
T2 12942 10 0 0
T3 355958 21 0 0
T7 83170 246 0 0
T8 13189 238 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 11 0 0
T12 362617 32 0 0
T13 6392 64 0 0
T14 0 193 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2795588 0 0
T1 2648 9 0 0
T2 12942 60 0 0
T3 355958 75 0 0
T7 83170 1951 0 0
T8 13189 230 0 0
T9 1035 1 0 0
T10 13475 305 0 0
T11 432281 3865 0 0
T12 362617 11347 0 0
T13 6392 62 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 224921 0 0
T1 2648 8 0 0
T2 12942 10 0 0
T3 355958 21 0 0
T7 83170 246 0 0
T8 13189 238 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 11 0 0
T12 362617 32 0 0
T13 6392 64 0 0
T14 0 193 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 224921 0 0
T1 2648 8 0 0
T2 12942 10 0 0
T3 355958 21 0 0
T7 83170 246 0 0
T8 13189 238 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 11 0 0
T12 362617 32 0 0
T13 6392 64 0 0
T14 0 193 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 545662 0 0
T1 2648 8 0 0
T2 12942 10 0 0
T3 355958 24 0 0
T7 83170 393 0 0
T8 13189 247 0 0
T9 1035 0 0 0
T10 13475 100 0 0
T11 432281 544 0 0
T12 362617 1288 0 0
T13 6392 67 0 0
T14 0 195 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 224921 0 0
T1 2648 8 0 0
T2 12942 10 0 0
T3 355958 21 0 0
T7 83170 246 0 0
T8 13189 238 0 0
T9 1035 0 0 0
T10 13475 37 0 0
T11 432281 11 0 0
T12 362617 32 0 0
T13 6392 64 0 0
T14 0 193 0 0

Line Coverage for Instance : tb.dut.u_sm1_54.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T2 T8 T7  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_54.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT2,T8,T7
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT2,T8,T7

Branch Coverage for Instance : tb.dut.u_sm1_54.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T2,T8,T7
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_54.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 218115 0 0
GntImpliesValid_A 422133040 218115 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 218115 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 2733256 0 0
ReadyAndValidImplyGrant_A 422133040 218115 0 0
ReqAndReadyImplyGrant_A 422133040 218115 0 0
ReqImpliesValid_A 422133040 549754 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 218115 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218115 0 0
T1 2648 11 0 0
T2 12942 10 0 0
T3 355958 8 0 0
T7 83170 248 0 0
T8 13189 244 0 0
T9 1035 0 0 0
T10 13475 39 0 0
T11 432281 20 0 0
T12 362617 24 0 0
T13 6392 64 0 0
T14 0 205 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218115 0 0
T1 2648 11 0 0
T2 12942 10 0 0
T3 355958 8 0 0
T7 83170 248 0 0
T8 13189 244 0 0
T9 1035 0 0 0
T10 13475 39 0 0
T11 432281 20 0 0
T12 362617 24 0 0
T13 6392 64 0 0
T14 0 205 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218115 0 0
T1 2648 11 0 0
T2 12942 10 0 0
T3 355958 8 0 0
T7 83170 248 0 0
T8 13189 244 0 0
T9 1035 0 0 0
T10 13475 39 0 0
T11 432281 20 0 0
T12 362617 24 0 0
T13 6392 64 0 0
T14 0 205 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2733256 0 0
T1 2648 12 0 0
T2 12942 90 0 0
T3 355958 50 0 0
T7 83170 1910 0 0
T8 13189 226 0 0
T9 1035 1 0 0
T10 13475 333 0 0
T11 432281 7132 0 0
T12 362617 6440 0 0
T13 6392 65 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218115 0 0
T1 2648 11 0 0
T2 12942 10 0 0
T3 355958 8 0 0
T7 83170 248 0 0
T8 13189 244 0 0
T9 1035 0 0 0
T10 13475 39 0 0
T11 432281 20 0 0
T12 362617 24 0 0
T13 6392 64 0 0
T14 0 205 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218115 0 0
T1 2648 11 0 0
T2 12942 10 0 0
T3 355958 8 0 0
T7 83170 248 0 0
T8 13189 244 0 0
T9 1035 0 0 0
T10 13475 39 0 0
T11 432281 20 0 0
T12 362617 24 0 0
T13 6392 64 0 0
T14 0 205 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 549754 0 0
T1 2648 11 0 0
T2 12942 16 0 0
T3 355958 8 0 0
T7 83170 335 0 0
T8 13189 263 0 0
T9 1035 0 0 0
T10 13475 55 0 0
T11 432281 618 0 0
T12 362617 24 0 0
T13 6392 64 0 0
T14 0 205 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 218115 0 0
T1 2648 11 0 0
T2 12942 10 0 0
T3 355958 8 0 0
T7 83170 248 0 0
T8 13189 244 0 0
T9 1035 0 0 0
T10 13475 39 0 0
T11 432281 20 0 0
T12 362617 24 0 0
T13 6392 64 0 0
T14 0 205 0 0

Line Coverage for Instance : tb.dut.u_sm1_55.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T2 T8 T7  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_55.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT2,T8,T7
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT2,T8,T7

Branch Coverage for Instance : tb.dut.u_sm1_55.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T2,T8,T7
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_55.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 225922 0 0
GntImpliesValid_A 422133040 225922 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 225922 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 2760044 0 0
ReadyAndValidImplyGrant_A 422133040 225922 0 0
ReqAndReadyImplyGrant_A 422133040 225922 0 0
ReqImpliesValid_A 422133040 582368 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 225922 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 225922 0 0
T1 2648 19 0 0
T2 12942 15 0 0
T3 355958 5 0 0
T7 83170 221 0 0
T8 13189 225 0 0
T9 1035 0 0 0
T10 13475 58 0 0
T11 432281 7 0 0
T12 362617 28 0 0
T13 6392 81 0 0
T14 0 192 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 225922 0 0
T1 2648 19 0 0
T2 12942 15 0 0
T3 355958 5 0 0
T7 83170 221 0 0
T8 13189 225 0 0
T9 1035 0 0 0
T10 13475 58 0 0
T11 432281 7 0 0
T12 362617 28 0 0
T13 6392 81 0 0
T14 0 192 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 225922 0 0
T1 2648 19 0 0
T2 12942 15 0 0
T3 355958 5 0 0
T7 83170 221 0 0
T8 13189 225 0 0
T9 1035 0 0 0
T10 13475 58 0 0
T11 432281 7 0 0
T12 362617 28 0 0
T13 6392 81 0 0
T14 0 192 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2760044 0 0
T1 2648 20 0 0
T2 12942 103 0 0
T3 355958 30 0 0
T7 83170 1715 0 0
T8 13189 205 0 0
T9 1035 1 0 0
T10 13475 391 0 0
T11 432281 2007 0 0
T12 362617 9744 0 0
T13 6392 77 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 225922 0 0
T1 2648 19 0 0
T2 12942 15 0 0
T3 355958 5 0 0
T7 83170 221 0 0
T8 13189 225 0 0
T9 1035 0 0 0
T10 13475 58 0 0
T11 432281 7 0 0
T12 362617 28 0 0
T13 6392 81 0 0
T14 0 192 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 225922 0 0
T1 2648 19 0 0
T2 12942 15 0 0
T3 355958 5 0 0
T7 83170 221 0 0
T8 13189 225 0 0
T9 1035 0 0 0
T10 13475 58 0 0
T11 432281 7 0 0
T12 362617 28 0 0
T13 6392 81 0 0
T14 0 192 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 582368 0 0
T1 2648 19 0 0
T2 12942 21 0 0
T3 355958 5 0 0
T7 83170 316 0 0
T8 13189 246 0 0
T9 1035 0 0 0
T10 13475 96 0 0
T11 432281 7 0 0
T12 362617 28 0 0
T13 6392 86 0 0
T14 0 194 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 225922 0 0
T1 2648 19 0 0
T2 12942 15 0 0
T3 355958 5 0 0
T7 83170 221 0 0
T8 13189 225 0 0
T9 1035 0 0 0
T10 13475 58 0 0
T11 432281 7 0 0
T12 362617 28 0 0
T13 6392 81 0 0
T14 0 192 0 0

Line Coverage for Instance : tb.dut.u_sm1_56.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T8 T7 T10  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_56.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT8,T7,T10
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT8,T7,T10

Branch Coverage for Instance : tb.dut.u_sm1_56.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T8,T7,T10
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_56.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 13 81.25
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 13 81.25




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 221235 0 0
GntImpliesValid_A 422133040 221235 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 221235 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 2776840 0 0
ReadyAndValidImplyGrant_A 422133040 221235 0 0
ReqAndReadyImplyGrant_A 422133040 221235 0 0
ReqImpliesValid_A 422133040 605005 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 0 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 221235 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 221235 0 0
T1 2648 14 0 0
T2 12942 4 0 0
T3 355958 9 0 0
T7 83170 254 0 0
T8 13189 215 0 0
T9 1035 0 0 0
T10 13475 34 0 0
T11 432281 9 0 0
T12 362617 25 0 0
T13 6392 63 0 0
T14 0 233 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 221235 0 0
T1 2648 14 0 0
T2 12942 4 0 0
T3 355958 9 0 0
T7 83170 254 0 0
T8 13189 215 0 0
T9 1035 0 0 0
T10 13475 34 0 0
T11 432281 9 0 0
T12 362617 25 0 0
T13 6392 63 0 0
T14 0 233 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 221235 0 0
T1 2648 14 0 0
T2 12942 4 0 0
T3 355958 9 0 0
T7 83170 254 0 0
T8 13189 215 0 0
T9 1035 0 0 0
T10 13475 34 0 0
T11 432281 9 0 0
T12 362617 25 0 0
T13 6392 63 0 0
T14 0 233 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2776840 0 0
T1 2648 15 0 0
T2 12942 24 0 0
T3 355958 41 0 0
T7 83170 2036 0 0
T8 13189 208 0 0
T9 1035 1 0 0
T10 13475 221 0 0
T11 432281 3840 0 0
T12 362617 8146 0 0
T13 6392 62 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 221235 0 0
T1 2648 14 0 0
T2 12942 4 0 0
T3 355958 9 0 0
T7 83170 254 0 0
T8 13189 215 0 0
T9 1035 0 0 0
T10 13475 34 0 0
T11 432281 9 0 0
T12 362617 25 0 0
T13 6392 63 0 0
T14 0 233 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 221235 0 0
T1 2648 14 0 0
T2 12942 4 0 0
T3 355958 9 0 0
T7 83170 254 0 0
T8 13189 215 0 0
T9 1035 0 0 0
T10 13475 34 0 0
T11 432281 9 0 0
T12 362617 25 0 0
T13 6392 63 0 0
T14 0 233 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 605005 0 0
T1 2648 14 0 0
T2 12942 4 0 0
T3 355958 9 0 0
T7 83170 315 0 0
T8 13189 223 0 0
T9 1035 0 0 0
T10 13475 60 0 0
T11 432281 9 0 0
T12 362617 454 0 0
T13 6392 65 0 0
T14 0 235 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 900

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 221235 0 0
T1 2648 14 0 0
T2 12942 4 0 0
T3 355958 9 0 0
T7 83170 254 0 0
T8 13189 215 0 0
T9 1035 0 0 0
T10 13475 34 0 0
T11 432281 9 0 0
T12 362617 25 0 0
T13 6392 63 0 0
T14 0 233 0 0

Line Coverage for Instance : tb.dut.u_sm1_28.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T3 T7 T10  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_28.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT3,T7,T10
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT3,T7,T10

Branch Coverage for Instance : tb.dut.u_sm1_28.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

Branches:
-1--2--3-StatusTests
1 - - Covered T1,T2,T3
0 1 - Covered T1,T2,T3
0 0 1 Covered T3,T7,T10
0 0 0 Covered T1,T2,T3


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_28.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 14 87.50
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 14 87.50




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 888722 0 0
GntImpliesValid_A 422133040 888722 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 888722 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 10075893 0 0
ReadyAndValidImplyGrant_A 422133040 888722 0 0
ReqAndReadyImplyGrant_A 422133040 888722 0 0
ReqImpliesValid_A 422133040 2078728 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 21895 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 888722 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 888722 0 0
T1 2648 45 0 0
T2 12942 51 0 0
T3 355958 56 0 0
T7 83170 952 0 0
T8 13189 1016 0 0
T9 1035 68 0 0
T10 13475 126 0 0
T11 432281 38 0 0
T12 362617 104 0 0
T13 6392 272 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 888722 0 0
T1 2648 45 0 0
T2 12942 51 0 0
T3 355958 56 0 0
T7 83170 952 0 0
T8 13189 1016 0 0
T9 1035 68 0 0
T10 13475 126 0 0
T11 432281 38 0 0
T12 362617 104 0 0
T13 6392 272 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 888722 0 0
T1 2648 45 0 0
T2 12942 51 0 0
T3 355958 56 0 0
T7 83170 952 0 0
T8 13189 1016 0 0
T9 1035 68 0 0
T10 13475 126 0 0
T11 432281 38 0 0
T12 362617 104 0 0
T13 6392 272 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 10075893 0 0
T1 2648 1 0 0
T2 12942 334 0 0
T3 355958 175 0 0
T7 83170 6031 0 0
T8 13189 1 0 0
T9 1035 1 0 0
T10 13475 794 0 0
T11 432281 12537 0 0
T12 362617 33550 0 0
T13 6392 1 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 888722 0 0
T1 2648 45 0 0
T2 12942 51 0 0
T3 355958 56 0 0
T7 83170 952 0 0
T8 13189 1016 0 0
T9 1035 68 0 0
T10 13475 126 0 0
T11 432281 38 0 0
T12 362617 104 0 0
T13 6392 272 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 888722 0 0
T1 2648 45 0 0
T2 12942 51 0 0
T3 355958 56 0 0
T7 83170 952 0 0
T8 13189 1016 0 0
T9 1035 68 0 0
T10 13475 126 0 0
T11 432281 38 0 0
T12 362617 104 0 0
T13 6392 272 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 2078728 0 0
T1 2648 45 0 0
T2 12942 51 0 0
T3 355958 69 0 0
T7 83170 1650 0 0
T8 13189 1016 0 0
T9 1035 68 0 0
T10 13475 234 0 0
T11 432281 1681 0 0
T12 362617 2215 0 0
T13 6392 272 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 21895 0 900
T7 83170 0 0 1
T8 13189 25 0 1
T9 1035 0 0 1
T10 13475 0 0 1
T11 432281 0 0 1
T12 362617 0 0 1
T13 6392 4 0 1
T14 19017 23 0 1
T15 8227 3 0 1
T16 0 5 0 0
T17 0 8 0 0
T18 0 25 0 0
T19 0 1 0 0
T20 0 1 0 0
T21 0 3 0 0
T24 2183 0 0 1

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 888722 0 0
T1 2648 45 0 0
T2 12942 51 0 0
T3 355958 56 0 0
T7 83170 952 0 0
T8 13189 1016 0 0
T9 1035 68 0 0
T10 13475 126 0 0
T11 432281 38 0 0
T12 362617 104 0 0
T13 6392 272 0 0

Line Coverage for Instance : tb.dut.u_sm1_30.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
TOTAL2323100.00
CONT_ASSIGN5500
CONT_ASSIGN7511100.00
CONT_ASSIGN7611100.00
ALWAYS8233100.00
CONT_ASSIGN8911100.00
CONT_ASSIGN9011100.00
CONT_ASSIGN9211100.00
CONT_ASSIGN9411100.00
ALWAYS9666100.00
ALWAYS10944100.00
ALWAYS12444100.00

54 logic unused_req_chk; 55 unreachable assign unused_req_chk = req_chk_i; 56 57 `ASSERT_INIT(CheckNGreaterZero_A, N > 0) 58 59 // this case is basically just a bypass 60 if (N == 1) begin : gen_degenerate_case 61 62 assign valid_o = req_i[0]; 63 assign data_o = data_i[0]; 64 assign gnt_o[0] = valid_o & ready_i; 65 assign idx_o = '0; 66 67 end else begin : gen_normal_case 68 69 logic [N-1:0] masked_req; 70 logic [N-1:0] ppc_out; 71 logic [N-1:0] arb_req; 72 logic [N-1:0] mask, mask_next; 73 logic [N-1:0] winner; 74 75 1/1 assign masked_req = mask & req_i; Tests: T1 T2 T3  76 1/1 assign arb_req = (|masked_req) ? masked_req : req_i; Tests: T1 T2 T3  77 78 // PPC 79 // Even below code looks O(n) but DC optimizes it to O(log(N)) 80 // Using Parallel Prefix Computation 81 always_comb begin 82 1/1 ppc_out[0] = arb_req[0]; Tests: T1 T2 T3  83 1/1 for (int i = 1 ; i < N ; i++) begin Tests: T1 T2 T3  84 1/1 ppc_out[i] = ppc_out[i-1] | arb_req[i]; Tests: T1 T2 T3  85 end 86 end 87 88 // Grant Generation: Leading-One detector 89 1/1 assign winner = ppc_out ^ {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  90 1/1 assign gnt_o = (ready_i) ? winner : '0; Tests: T1 T2 T3  91 92 1/1 assign valid_o = |req_i; Tests: T1 T2 T3  93 // Mask Generation 94 1/1 assign mask_next = {ppc_out[N-2:0], 1'b0}; Tests: T1 T2 T3  95 always_ff @(posedge clk_i or negedge rst_ni) begin 96 1/1 if (!rst_ni) begin Tests: T1 T2 T3  97 1/1 mask <= '0; Tests: T1 T2 T3  98 1/1 end else if (valid_o && ready_i) begin Tests: T1 T2 T3  99 // Latch only when requests accepted 100 1/1 mask <= mask_next; Tests: T1 T2 T3  101 1/1 end else if (valid_o && !ready_i) begin Tests: T1 T2 T3  102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 1/1 mask <= ppc_out; Tests: T2 T3 T7  104 end MISSING_ELSE 105 end 106 107 if (EnDataPort == 1) begin: gen_datapath 108 always_comb begin 109 1/1 data_o = '0; Tests: T1 T2 T3  110 1/1 for (int i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  111 1/1 if (winner[i]) begin Tests: T1 T2 T3  112 1/1 data_o = data_i[i]; Tests: T1 T2 T3  113 end MISSING_ELSE 114 end 115 end 116 end else begin: gen_nodatapath 117 assign data_o = '1; 118 // The following signal is used to avoid possible lint errors. 119 logic [DW-1:0] unused_data [N]; 120 assign unused_data = data_i; 121 end 122 123 always_comb begin 124 1/1 idx_o = '0; Tests: T1 T2 T3  125 1/1 for (int unsigned i = 0 ; i < N ; i++) begin Tests: T1 T2 T3  126 1/1 if (winner[i]) begin Tests: T1 T2 T3  127 1/1 idx_o = i[IdxW-1:0]; Tests: T1 T2 T3  128 end MISSING_ELSE

Cond Coverage for Instance : tb.dut.u_sm1_30.gen_arb_ppc.u_reqarb
TotalCoveredPercent
Conditions131292.31
Logical131292.31
Non-Logical00
Event00

 LINE       76
 EXPRESSION (((|gen_normal_case.masked_req)) ? gen_normal_case.masked_req : req_i)
             ---------------1---------------
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       84
 EXPRESSION (gen_normal_case.ppc_out[(i - 1)] | gen_normal_case.arb_req[i])
             ----------------1---------------   -------------2------------
-1--2-StatusTests
00CoveredT1,T2,T3
01CoveredT1,T2,T3
10CoveredT1,T2,T3

 LINE       90
 EXPRESSION (ready_i ? gen_normal_case.winner : '0)
             ---1---
-1-StatusTests
0CoveredT1,T2,T3
1CoveredT1,T2,T3

 LINE       98
 EXPRESSION (valid_o && ready_i)
             ---1---    ---2---
-1--2-StatusTests
01CoveredT1,T2,T3
10CoveredT2,T3,T7
11CoveredT1,T2,T3

 LINE       101
 EXPRESSION (valid_o && ((!ready_i)))
             ---1---    ------2-----
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT2,T3,T7

Branch Coverage for Instance : tb.dut.u_sm1_30.gen_arb_ppc.u_reqarb
Line No.TotalCoveredPercent
Branches 12 12 100.00
TERNARY 76 2 2 100.00
TERNARY 90 2 2 100.00
IF 96 4 4 100.00
IF 126 2 2 100.00
IF 111 2 2 100.00


76 assign arb_req = (|masked_req) ? masked_req : req_i; -1- ==> ==>

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


90 assign gnt_o = (ready_i) ? winner : '0; -1- ==> ==>

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


96 if (!rst_ni) begin -1- 97 mask <= '0; ==> 98 end else if (valid_o && ready_i) begin -2- 99 // Latch only when requests accepted 100 mask <= mask_next; ==> 101 end else if (valid_o && !ready_i) begin -3- 102 // Downstream isn't yet ready so, keep current request alive. (First come first serve) 103 mask <= ppc_out; ==> 104 end MISSING_ELSE ==>

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


126 if (winner[i]) begin -1- 127 idx_o = i[IdxW-1:0]; ==> 128 end MISSING_ELSE ==>

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


111 if (winner[i]) begin -1- 112 data_o = data_i[i]; ==> 113 end MISSING_ELSE ==>

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


Assert Coverage for Instance : tb.dut.u_sm1_30.gen_arb_ppc.u_reqarb
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 16 16 100.00 14 87.50
Cover properties 0 0 0
Cover sequences 0 0 0
Total 16 16 100.00 14 87.50




Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
CheckHotOne_A 422133040 422011185 0 0
CheckNGreaterZero_A 900 900 0 0
GntImpliesReady_A 422133040 874494 0 0
GntImpliesValid_A 422133040 874494 0 0
GrantKnown_A 422133040 422011185 0 0
IdxKnown_A 422133040 422011185 0 0
IndexIsCorrect_A 422133040 874494 0 0
LockArbDecision_A 422133040 0 0 0
NoReadyValidNoGrant_A 422133040 353254808 0 0
ReadyAndValidImplyGrant_A 422133040 874494 0 0
ReqAndReadyImplyGrant_A 422133040 874494 0 0
ReqImpliesValid_A 422133040 11876316 0 0
ReqStaysHighUntilGranted0_M 422133040 0 0 0
RoundRobin_A 422133040 30153 0 900
ValidKnown_A 422133040 422011185 0 0
gen_data_port_assertion.DataFlow_A 422133040 874494 0 0


CheckHotOne_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

CheckNGreaterZero_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 900 900 0 0
T1 1 1 0 0
T2 1 1 0 0
T3 1 1 0 0
T7 1 1 0 0
T8 1 1 0 0
T9 1 1 0 0
T10 1 1 0 0
T11 1 1 0 0
T12 1 1 0 0
T13 1 1 0 0

GntImpliesReady_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 874494 0 0
T1 2648 43 0 0
T2 12942 49 0 0
T3 355958 66 0 0
T7 83170 957 0 0
T8 13189 1038 0 0
T9 1035 68 0 0
T10 13475 136 0 0
T11 432281 44 0 0
T12 362617 89 0 0
T13 6392 320 0 0

GntImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 874494 0 0
T1 2648 43 0 0
T2 12942 49 0 0
T3 355958 66 0 0
T7 83170 957 0 0
T8 13189 1038 0 0
T9 1035 68 0 0
T10 13475 136 0 0
T11 432281 44 0 0
T12 362617 89 0 0
T13 6392 320 0 0

GrantKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IdxKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

IndexIsCorrect_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 874494 0 0
T1 2648 43 0 0
T2 12942 49 0 0
T3 355958 66 0 0
T7 83170 957 0 0
T8 13189 1038 0 0
T9 1035 68 0 0
T10 13475 136 0 0
T11 432281 44 0 0
T12 362617 89 0 0
T13 6392 320 0 0

LockArbDecision_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

NoReadyValidNoGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 353254808 0 0
T1 2648 1 0 0
T2 12942 11347 0 0
T3 355958 296258 0 0
T7 83170 69135 0 0
T8 13189 1 0 0
T9 1035 1 0 0
T10 13475 11214 0 0
T11 432281 410046 0 0
T12 362617 330224 0 0
T13 6392 1 0 0

ReadyAndValidImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 874494 0 0
T1 2648 43 0 0
T2 12942 49 0 0
T3 355958 66 0 0
T7 83170 957 0 0
T8 13189 1038 0 0
T9 1035 68 0 0
T10 13475 136 0 0
T11 432281 44 0 0
T12 362617 89 0 0
T13 6392 320 0 0

ReqAndReadyImplyGrant_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 874494 0 0
T1 2648 43 0 0
T2 12942 49 0 0
T3 355958 66 0 0
T7 83170 957 0 0
T8 13189 1038 0 0
T9 1035 68 0 0
T10 13475 136 0 0
T11 432281 44 0 0
T12 362617 89 0 0
T13 6392 320 0 0

ReqImpliesValid_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 11876316 0 0
T1 2648 43 0 0
T2 12942 401 0 0
T3 355958 307 0 0
T7 83170 7438 0 0
T8 13189 1038 0 0
T9 1035 68 0 0
T10 13475 1149 0 0
T11 432281 12596 0 0
T12 362617 31734 0 0
T13 6392 320 0 0

ReqStaysHighUntilGranted0_M
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 0 0 0

RoundRobin_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 30153 0 900
T7 83170 0 0 1
T8 13189 22 0 1
T9 1035 0 0 1
T10 13475 0 0 1
T11 432281 0 0 1
T12 362617 0 0 1
T13 6392 8 0 1
T14 19017 13 0 1
T15 8227 5 0 1
T16 0 8 0 0
T17 0 9 0 0
T19 0 1 0 0
T21 0 7 0 0
T22 0 6 0 0
T23 0 4 0 0
T24 2183 0 0 1

ValidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 422011185 0 0
T1 2648 2575 0 0
T2 12942 12894 0 0
T3 355958 355863 0 0
T7 83170 83150 0 0
T8 13189 13176 0 0
T9 1035 1019 0 0
T10 13475 13433 0 0
T11 432281 432239 0 0
T12 362617 362591 0 0
T13 6392 6342 0 0

gen_data_port_assertion.DataFlow_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 422133040 874494 0 0
T1 2648 43 0 0
T2 12942 49 0 0
T3 355958 66 0 0
T7 83170 957 0 0
T8 13189 1038 0 0
T9 1035 68 0 0
T10 13475 136 0 0
T11 432281 44 0 0
T12 362617 89 0 0
T13 6392 320 0 0

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