174 lines
7.9 KiB
Systemverilog
174 lines
7.9 KiB
Systemverilog
// argv=9
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// TOTAL_INT=9 NUM_LEVELS=4
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`ifdef RV_PIC_2CYCLE
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// LEVEL0
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logic [TOTAL_INT+2:0] [INTPRIORITY_BITS-1:0] level_intpend_w_prior_en_1;
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logic [TOTAL_INT+2:0] [ID_BITS-1:0] level_intpend_id_1;
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for (m=0; m<=(TOTAL_INT)/(2**(1)) ; m++) begin : COMPARE0
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if ( m == (TOTAL_INT)/(2**(1))) begin
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assign level_intpend_w_prior_en_1[m+1] = '0 ;
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assign level_intpend_id_1[m+1] = '0 ;
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end
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cmp_and_mux #(
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.ID_BITS(ID_BITS),
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.INTPRIORITY_BITS(INTPRIORITY_BITS)) cmp_l1 (
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.a_id(level_intpend_id[0][2*m]),
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.a_priority(level_intpend_w_prior_en[0][2*m]),
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.b_id(level_intpend_id[0][2*m+1]),
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.b_priority(level_intpend_w_prior_en[0][2*m+1]),
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.out_id(level_intpend_id_1[m]),
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.out_priority(level_intpend_w_prior_en_1[m])) ;
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end
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// LEVEL1
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logic [TOTAL_INT+2:0] [INTPRIORITY_BITS-1:0] level_intpend_w_prior_en_2;
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logic [TOTAL_INT+2:0] [ID_BITS-1:0] level_intpend_id_2;
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for (m=0; m<=(TOTAL_INT)/(2**(2)) ; m++) begin : COMPARE1
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if ( m == (TOTAL_INT)/(2**(2))) begin
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assign level_intpend_w_prior_en_2[m+1] = '0 ;
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assign level_intpend_id_2[m+1] = '0 ;
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end
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cmp_and_mux #(
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.ID_BITS(ID_BITS),
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.INTPRIORITY_BITS(INTPRIORITY_BITS)) cmp_l2 (
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.a_id(level_intpend_id_1[2*m]),
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.a_priority(level_intpend_w_prior_en_1[2*m]),
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.b_id(level_intpend_id_1[2*m+1]),
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.b_priority(level_intpend_w_prior_en_1[2*m+1]),
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.out_id(level_intpend_id_2[m]),
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.out_priority(level_intpend_w_prior_en_2[m])) ;
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end
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for (i=0; i<=TOTAL_INT/2**(NUM_LEVELS/2) ; i++) begin : MIDDLE_FLOPS
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rvdff #(INTPRIORITY_BITS) level2_intpend_prior_reg (.*, .din (level_intpend_w_prior_en_2[i]), .dout(l2_intpend_w_prior_en_ff[i]), .clk(active_clk));
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rvdff #(ID_BITS) level2_intpend_id_reg (.*, .din (level_intpend_id_2[i]), .dout(l2_intpend_id_ff[i]), .clk(active_clk));
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end
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// LEVEL2
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logic [TOTAL_INT+2:0] [INTPRIORITY_BITS-1:0] levelx_intpend_w_prior_en_3;
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logic [TOTAL_INT+2:0] [ID_BITS-1:0] levelx_intpend_id_3;
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for (m=0; m<=(TOTAL_INT)/(2**(3)) ; m++) begin : COMPARE2
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if ( m == (TOTAL_INT)/(2**(3))) begin
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assign levelx_intpend_w_prior_en_3[m+1] = '0 ;
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assign levelx_intpend_id_3[m+1] = '0 ;
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end
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cmp_and_mux #(
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.ID_BITS(ID_BITS),
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.INTPRIORITY_BITS(INTPRIORITY_BITS)) cmp_l3 (
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.a_id(levelx_intpend_id[2][2*m]),
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.a_priority(levelx_intpend_w_prior_en[2][2*m]),
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.b_id(levelx_intpend_id[2][2*m+1]),
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.b_priority(levelx_intpend_w_prior_en[2][2*m+1]),
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.out_id(levelx_intpend_id_3[m]),
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.out_priority(levelx_intpend_w_prior_en_3[m])) ;
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end
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// LEVEL3
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logic [TOTAL_INT+2:0] [INTPRIORITY_BITS-1:0] levelx_intpend_w_prior_en_4;
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logic [TOTAL_INT+2:0] [ID_BITS-1:0] levelx_intpend_id_4;
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for (m=0; m<=(TOTAL_INT)/(2**(4)) ; m++) begin : COMPARE3
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if ( m == (TOTAL_INT)/(2**(4))) begin
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assign levelx_intpend_w_prior_en_4[m+1] = '0 ;
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assign levelx_intpend_id_4[m+1] = '0 ;
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end
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cmp_and_mux #(
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.ID_BITS(ID_BITS),
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.INTPRIORITY_BITS(INTPRIORITY_BITS)) cmp_l4 (
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.a_id(levelx_intpend_id_3[2*m]),
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.a_priority(levelx_intpend_w_prior_en_3[2*m]),
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.b_id(levelx_intpend_id_3[2*m+1]),
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.b_priority(levelx_intpend_w_prior_en_3[2*m+1]),
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.out_id(levelx_intpend_id_4[m]),
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.out_priority(levelx_intpend_w_prior_en_4[m])) ;
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end
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assign claimid_in[ID_BITS-1:0] = levelx_intpend_id_4[0] ; // This is the last level output
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assign selected_int_priority[INTPRIORITY_BITS-1:0] = levelx_intpend_w_prior_en_4[0] ;
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`else
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// LEVEL0
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logic [TOTAL_INT+2:0] [INTPRIORITY_BITS-1:0] level_intpend_w_prior_en_1;
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logic [TOTAL_INT+2:0] [ID_BITS-1:0] level_intpend_id_1;
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for (m=0; m<=(TOTAL_INT)/(2**(1)) ; m++) begin : COMPARE0
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if ( m == (TOTAL_INT)/(2**(1))) begin
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assign level_intpend_w_prior_en_1[m+1] = '0 ;
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assign level_intpend_id_1[m+1] = '0 ;
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end
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cmp_and_mux #(
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.ID_BITS(ID_BITS),
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.INTPRIORITY_BITS(INTPRIORITY_BITS)) cmp_l1 (
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.a_id(level_intpend_id[0][2*m]),
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.a_priority(level_intpend_w_prior_en[0][2*m]),
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.b_id(level_intpend_id[0][2*m+1]),
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.b_priority(level_intpend_w_prior_en[0][2*m+1]),
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.out_id(level_intpend_id_1[m]),
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.out_priority(level_intpend_w_prior_en_1[m])) ;
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end
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// LEVEL1
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logic [TOTAL_INT+2:0] [INTPRIORITY_BITS-1:0] level_intpend_w_prior_en_2;
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logic [TOTAL_INT+2:0] [ID_BITS-1:0] level_intpend_id_2;
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for (m=0; m<=(TOTAL_INT)/(2**(2)) ; m++) begin : COMPARE1
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if ( m == (TOTAL_INT)/(2**(2))) begin
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assign level_intpend_w_prior_en_2[m+1] = '0 ;
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assign level_intpend_id_2[m+1] = '0 ;
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end
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cmp_and_mux #(
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.ID_BITS(ID_BITS),
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.INTPRIORITY_BITS(INTPRIORITY_BITS)) cmp_l2 (
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.a_id(level_intpend_id_1[2*m]),
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.a_priority(level_intpend_w_prior_en_1[2*m]),
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.b_id(level_intpend_id_1[2*m+1]),
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.b_priority(level_intpend_w_prior_en_1[2*m+1]),
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.out_id(level_intpend_id_2[m]),
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.out_priority(level_intpend_w_prior_en_2[m])) ;
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end
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// LEVEL2
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logic [TOTAL_INT+2:0] [INTPRIORITY_BITS-1:0] level_intpend_w_prior_en_3;
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logic [TOTAL_INT+2:0] [ID_BITS-1:0] level_intpend_id_3;
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for (m=0; m<=(TOTAL_INT)/(2**(3)) ; m++) begin : COMPARE2
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if ( m == (TOTAL_INT)/(2**(3))) begin
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assign level_intpend_w_prior_en_3[m+1] = '0 ;
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assign level_intpend_id_3[m+1] = '0 ;
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end
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cmp_and_mux #(
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.ID_BITS(ID_BITS),
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.INTPRIORITY_BITS(INTPRIORITY_BITS)) cmp_l3 (
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.a_id(level_intpend_id_2[2*m]),
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.a_priority(level_intpend_w_prior_en_2[2*m]),
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.b_id(level_intpend_id_2[2*m+1]),
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.b_priority(level_intpend_w_prior_en_2[2*m+1]),
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.out_id(level_intpend_id_3[m]),
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.out_priority(level_intpend_w_prior_en_3[m])) ;
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end
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// LEVEL3
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logic [TOTAL_INT+2:0] [INTPRIORITY_BITS-1:0] level_intpend_w_prior_en_4;
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logic [TOTAL_INT+2:0] [ID_BITS-1:0] level_intpend_id_4;
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for (m=0; m<=(TOTAL_INT)/(2**(4)) ; m++) begin : COMPARE3
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if ( m == (TOTAL_INT)/(2**(4))) begin
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assign level_intpend_w_prior_en_4[m+1] = '0 ;
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assign level_intpend_id_4[m+1] = '0 ;
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end
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cmp_and_mux #(
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.ID_BITS(ID_BITS),
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.INTPRIORITY_BITS(INTPRIORITY_BITS)) cmp_l4 (
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.a_id(level_intpend_id_3[2*m]),
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.a_priority(level_intpend_w_prior_en_3[2*m]),
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.b_id(level_intpend_id_3[2*m+1]),
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.b_priority(level_intpend_w_prior_en_3[2*m+1]),
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.out_id(level_intpend_id_4[m]),
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.out_priority(level_intpend_w_prior_en_4[m])) ;
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end
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assign claimid_in[ID_BITS-1:0] = level_intpend_id_4[0] ; // This is the last level output
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assign selected_int_priority[INTPRIORITY_BITS-1:0] = level_intpend_w_prior_en_4[0] ;
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`endif
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