// © IBM Corp. 2020
// Licensed under the Apache License, Version 2.0 (the "License"), as modified by
// the terms below; you may not use the files in this repository except in
// compliance with the License as modified.
// You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
//
// Modified Terms:
//
// 1) For the purpose of the patent license granted to you in Section 3 of the
// License, the "Work" hereby includes implementations of the work of authorship
// in physical form.
//
// 2) Notwithstanding any terms to the contrary in the License, any licenses
// necessary for implementation of the Work that are available from OpenPOWER
// via the Power ISA End User License Agreement (EULA) are explicitly excluded
// hereunder, and may be obtained from OpenPOWER under the terms and conditions
// of the EULA.
//
// Unless required by applicable law or agreed to in writing, the reference design
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License
// for the specific language governing permissions and limitations under the License.
//
// Additional rights, including the ability to physically implement a softcore that
// is compliant with the required sections of the Power ISA Specification, are
// available at no cost under the terms of the OpenPOWER Power ISA EULA, which can be
// obtained (along with the Power ISA) here: https://openpowerfoundation.org.
`timescale 1 ns / 1 ns
//********************************************************************
//*
//* TITLE: Instruction Unit Debug
//*
//* NAME: iuq_dbg.v
//*
//*********************************************************************
`include "tri_a2o.vh"
module iuq_dbg(
inout vdd,
inout gnd,
(* pin_data ="PIN_FUNCTION=/G_CLK/" *)
input [0:`NCLK_WIDTH-1] nclk,
input thold_2, // Connect to slp if unit uses slp
input pc_iu_sg_2,
input clkoff_b,
input act_dis,
input tc_ac_ccflush_dc,
input d_mode,
input delay_lclkr,
input mpw1_b,
input mpw2_b,
(* pin_data ="PIN_FUNCTION=/SCAN_IN/" *)
input func_scan_in,
(* pin_data ="PIN_FUNCTION=/SCAN_OUT/" *)
output func_scan_out,
input [0:31] unit_dbg_data0,
input [0:31] unit_dbg_data1,
input [0:31] unit_dbg_data2,
input [0:31] unit_dbg_data3,
input [0:31] unit_dbg_data4,
input [0:31] unit_dbg_data5,
input [0:31] unit_dbg_data6,
input [0:31] unit_dbg_data7,
input [0:31] unit_dbg_data8,
input [0:31] unit_dbg_data9,
input [0:31] unit_dbg_data10,
input [0:31] unit_dbg_data11,
input [0:31] unit_dbg_data12,
input [0:31] unit_dbg_data13,
input [0:31] unit_dbg_data14,
input [0:31] unit_dbg_data15,
input pc_iu_trace_bus_enable,
input [0:10] pc_iu_debug_mux_ctrls,
input [0:31] debug_bus_in,
output [0:31] debug_bus_out,
input [0:3] coretrace_ctrls_in,
output [0:3] coretrace_ctrls_out
);
localparam trace_bus_enable_offset = 0;
localparam debug_mux_ctrls_offset = trace_bus_enable_offset + 1;
localparam trace_data_out_offset = debug_mux_ctrls_offset + 11;
localparam coretrace_ctrls_out_offset = trace_data_out_offset + 32;
localparam scan_right = coretrace_ctrls_out_offset + 4 - 1;
wire trace_bus_enable_d;
wire trace_bus_enable_q;
wire [0:10] debug_mux_ctrls_d;
wire [0:10] debug_mux_ctrls_q;
wire [0:31] trace_data_out_d;
wire [0:31] trace_data_out_q;
wire [0:3] coretrace_ctrls_out_d;
wire [0:3] coretrace_ctrls_out_q;
wire [0:scan_right] siv;
wire [0:scan_right] sov;
wire thold_1;
wire thold_0;
wire thold_0_b;
wire pc_iu_sg_1;
wire pc_iu_sg_0;
wire force_t;
wire tiup;
//BEGIN
assign tiup = 1'b1;
tri_debug_mux16 dbg_mux0(
//.vd(vdd),
//.gd(gnd),
.select_bits(debug_mux_ctrls_q),
.trace_data_in(debug_bus_in),
.dbg_group0(unit_dbg_data0),
.dbg_group1(unit_dbg_data1),
.dbg_group2(unit_dbg_data2),
.dbg_group3(unit_dbg_data3),
.dbg_group4(unit_dbg_data4),
.dbg_group5(unit_dbg_data5),
.dbg_group6(unit_dbg_data6),
.dbg_group7(unit_dbg_data7),
.dbg_group8(unit_dbg_data8),
.dbg_group9(unit_dbg_data9),
.dbg_group10(unit_dbg_data10),
.dbg_group11(unit_dbg_data11),
.dbg_group12(unit_dbg_data12),
.dbg_group13(unit_dbg_data13),
.dbg_group14(unit_dbg_data14),
.dbg_group15(unit_dbg_data15),
.trace_data_out(trace_data_out_d),
.coretrace_ctrls_in(coretrace_ctrls_in),
.coretrace_ctrls_out(coretrace_ctrls_out_d)
);
assign debug_bus_out = trace_data_out_q;
assign coretrace_ctrls_out = coretrace_ctrls_out_q;
//---------------------------------------------------------------------
// Latches
//---------------------------------------------------------------------
assign trace_bus_enable_d = pc_iu_trace_bus_enable;
assign debug_mux_ctrls_d = pc_iu_debug_mux_ctrls;
tri_rlmlatch_p #(.INIT(0)) trace_bus_enable_latch(
.vd(vdd),
.gd(gnd),
.nclk(nclk),
.act(tiup),
.thold_b(thold_0_b),
.sg(pc_iu_sg_0),
.force_t(force_t),
.delay_lclkr(delay_lclkr),
.mpw1_b(mpw1_b),
.mpw2_b(mpw2_b),
.d_mode(d_mode),
.scin(siv[trace_bus_enable_offset]),
.scout(sov[trace_bus_enable_offset]),
.din(trace_bus_enable_d),
.dout(trace_bus_enable_q)
);
tri_rlmreg_p #(.WIDTH(11), .INIT(0)) debug_mux_ctrls_latch(
.vd(vdd),
.gd(gnd),
.nclk(nclk),
.act(trace_bus_enable_q),
.thold_b(thold_0_b),
.sg(pc_iu_sg_0),
.force_t(force_t),
.delay_lclkr(delay_lclkr),
.mpw1_b(mpw1_b),
.mpw2_b(mpw2_b),
.d_mode(d_mode),
.scin(siv[debug_mux_ctrls_offset:debug_mux_ctrls_offset + 10]),
.scout(sov[debug_mux_ctrls_offset:debug_mux_ctrls_offset + 10]),
.din(debug_mux_ctrls_d),
.dout(debug_mux_ctrls_q)
);
tri_rlmreg_p #(.WIDTH(32), .INIT(0)) trace_data_out_latch(
.vd(vdd),
.gd(gnd),
.nclk(nclk),
.act(trace_bus_enable_q),
.thold_b(thold_0_b),
.sg(pc_iu_sg_0),
.force_t(force_t),
.delay_lclkr(delay_lclkr),
.mpw1_b(mpw1_b),
.mpw2_b(mpw2_b),
.d_mode(d_mode),
.scin(siv[trace_data_out_offset:trace_data_out_offset + 31]),
.scout(sov[trace_data_out_offset:trace_data_out_offset + 31]),
.din(trace_data_out_d),
.dout(trace_data_out_q)
);
tri_rlmreg_p #(.WIDTH(4), .INIT(0)) coretrace_ctrls_out_latch(
.vd(vdd),
.gd(gnd),
.nclk(nclk),
.act(trace_bus_enable_q),
.thold_b(thold_0_b),
.sg(pc_iu_sg_0),
.force_t(force_t),
.delay_lclkr(delay_lclkr),
.mpw1_b(mpw1_b),
.mpw2_b(mpw2_b),
.d_mode(d_mode),
.scin(siv[coretrace_ctrls_out_offset:coretrace_ctrls_out_offset + 3]),
.scout(sov[coretrace_ctrls_out_offset:coretrace_ctrls_out_offset + 3]),
.din(coretrace_ctrls_out_d),
.dout(coretrace_ctrls_out_q)
);
//---------------------------------------------------------------------
// pervasive thold/sg latches
//---------------------------------------------------------------------
tri_plat #(.WIDTH(2)) perv_2to1_reg(
.vd(vdd),
.gd(gnd),
.nclk(nclk),
.flush(tc_ac_ccflush_dc),
.din({thold_2, pc_iu_sg_2}),
.q( {thold_1, pc_iu_sg_1})
);
tri_plat #(.WIDTH(2)) perv_1to0_reg(
.vd(vdd),
.gd(gnd),
.nclk(nclk),
.flush(tc_ac_ccflush_dc),
.din({thold_1, pc_iu_sg_1}),
.q( {thold_0, pc_iu_sg_0})
);
tri_lcbor perv_lcbor(
.clkoff_b(clkoff_b),
.thold(thold_0),
.sg(pc_iu_sg_0),
.act_dis(act_dis),
.force_t(force_t),
.thold_b(thold_0_b)
);
//---------------------------------------------------------------------
// Scan
//---------------------------------------------------------------------
assign siv[0:scan_right] = {sov[1:scan_right], func_scan_in};
assign func_scan_out = sov[0];
endmodule