Initial commit of OpenSPARC T2 design and verification files.

[OpenSPARC-T2-DV] / design / sys / iop / ncu / rtl / ncu_ssiuo4_ctl.v

// ========== Copyright Header Begin ==========================================
// 
// OpenSPARC T2 Processor File: ncu_ssiuo4_ctl.v
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`define UCB_BUS_WIDTH 4
`define UCB_BUS_WIDTH_M1 3
`define CYC_NUM 32
`define CYC_NUM_M1 31

module ncu_ssiuo4_ctl (
  iol2clk, 
  scan_in, 
  scan_out, 
  tcu_pce_ov, 
  tcu_clk_stop, 
  tcu_aclk, 
  tcu_bclk, 
  tcu_scan_en, 
  vld, 
  data, 
  stall, 
  outdata_buf_busy, 
  outdata_buf_in, 
  outdata_vec_in, 
  outdata_buf_wr) ;
wire [31:0] outdata_vec;
wire [127:0] outdata_buf;
wire stall_d1_ff_scanin;
wire stall_d1_ff_scanout;
wire stall_d1;
wire l1clk;
wire load_outdata;
wire shift_outdata;
wire [31:0] outdata_vec_next;
wire outdata_vec_ff_scanin;
wire outdata_vec_ff_scanout;
wire [127:0] outdata_buf_next;
wire outdata_buf_ff_scanin;
wire outdata_buf_ff_scanout;
wire siclk;
wire soclk;
wire se;
wire pce_ov;
wire stop;


// Globals
input		iol2clk;
input		scan_in;
output		scan_out;
input		tcu_pce_ov;
input		tcu_clk_stop;
input		tcu_aclk;
input		tcu_bclk;
input		tcu_scan_en;

// UCB bus interface
output		vld;
output [`UCB_BUS_WIDTH_M1 :0]	data;
input		stall;

// Local interface
output		outdata_buf_busy;
input [127:0]	outdata_buf_in;
input [`CYC_NUM_M1 :0]	outdata_vec_in;
input		outdata_buf_wr;

// Local signals

////////////////////////////////////////////////////////////////////////
// Code starts here
////////////////////////////////////////////////////////////////////////
/************************************************************
 * UCB bus interface flops
 ************************************************************/
assign 	 vld = outdata_vec[0];
assign 	 data[`UCB_BUS_WIDTH_M1 :0] = outdata_buf[`UCB_BUS_WIDTH_M1 :0];

ncu_ssiuo4_ctl_msff_ctl_macro__width_1 stall_d1_ff 
				(
				.scan_in(stall_d1_ff_scanin),
				.scan_out(stall_d1_ff_scanout),
				.dout		(stall_d1),
				.l1clk		(l1clk),
				.din		(stall),
  .siclk(siclk),
  .soclk(soclk)
				);

/************************************************************
 * Outbound Data
 ************************************************************/
// accept new data only if there is none being processed
assign  load_outdata = outdata_buf_wr & ~outdata_buf_busy;

assign  outdata_buf_busy = outdata_vec[0] | stall_d1;

assign  shift_outdata = outdata_vec[0] & ~stall_d1;

assign  outdata_vec_next[`CYC_NUM_M1 :0] =
				load_outdata  ? outdata_vec_in[`CYC_NUM_M1 :0] : 
				shift_outdata ? {1'b0,outdata_vec[`CYC_NUM_M1 :1]} : 
						outdata_vec[`CYC_NUM_M1 :0] ;

ncu_ssiuo4_ctl_msff_ctl_macro__width_32 outdata_vec_ff  
				(
				.scan_in(outdata_vec_ff_scanin),
				.scan_out(outdata_vec_ff_scanout),
				.dout		(outdata_vec[`CYC_NUM_M1 :0]),
				.l1clk		(l1clk),
				.din		(outdata_vec_next[`CYC_NUM_M1 :0]),
  .siclk(siclk),
  .soclk(soclk)
				);

assign  outdata_buf_next[127:0] = load_outdata  ? outdata_buf_in[127:0] :
		 		  shift_outdata ? (outdata_buf[127:0] >> `UCB_BUS_WIDTH ) :  
	                         		   outdata_buf[127:0] ;

ncu_ssiuo4_ctl_msff_ctl_macro__width_128 outdata_buf_ff 
				(
				.scan_in(outdata_buf_ff_scanin),
				.scan_out(outdata_buf_ff_scanout),
				.dout		(outdata_buf[127:0]),
				.l1clk		(l1clk),
				.din		(outdata_buf_next[127:0]),
  .siclk(siclk),
  .soclk(soclk)
				);




/**** adding clock header ****/
ncu_ssiuo4_ctl_l1clkhdr_ctl_macro clkgen (
				.l2clk	(iol2clk),
				.l1en	(1'b1),
				.l1clk	(l1clk),
  .pce_ov(pce_ov),
  .stop(stop),
  .se(se)
				);

/*** building tcu port ***/
assign	siclk = tcu_aclk;
assign	soclk = tcu_bclk;
assign	   se = tcu_scan_en;
assign	pce_ov = tcu_pce_ov;
assign	stop = tcu_clk_stop;

// fixscan start:
assign stall_d1_ff_scanin        = scan_in                  ;
assign outdata_vec_ff_scanin     = stall_d1_ff_scanout      ;
assign outdata_buf_ff_scanin     = outdata_vec_ff_scanout   ;
assign scan_out                  = outdata_buf_ff_scanout   ;
// fixscan end:
endmodule // ucb_bus_out












// any PARAMS parms go into naming of macro

module ncu_ssiuo4_ctl_msff_ctl_macro__width_1 (
  din, 
  l1clk, 
  scan_in, 
  siclk, 
  soclk, 
  dout, 
  scan_out);
wire [0:0] fdin;

  input [0:0] din;
  input l1clk;
  input scan_in;


  input siclk;
  input soclk;

  output [0:0] dout;
  output scan_out;
assign fdin[0:0] = din[0:0];






dff #(1)  d0_0 (
.l1clk(l1clk),
.siclk(siclk),
.soclk(soclk),
.d(fdin[0:0]),
.si(scan_in),
.so(scan_out),
.q(dout[0:0])
);












endmodule













// any PARAMS parms go into naming of macro

module ncu_ssiuo4_ctl_msff_ctl_macro__width_32 (
  din, 
  l1clk, 
  scan_in, 
  siclk, 
  soclk, 
  dout, 
  scan_out);
wire [31:0] fdin;
wire [30:0] so;

  input [31:0] din;
  input l1clk;
  input scan_in;


  input siclk;
  input soclk;

  output [31:0] dout;
  output scan_out;
assign fdin[31:0] = din[31:0];






dff #(32)  d0_0 (
.l1clk(l1clk),
.siclk(siclk),
.soclk(soclk),
.d(fdin[31:0]),
.si({scan_in,so[30:0]}),
.so({so[30:0],scan_out}),
.q(dout[31:0])
);












endmodule













// any PARAMS parms go into naming of macro

module ncu_ssiuo4_ctl_msff_ctl_macro__width_128 (
  din, 
  l1clk, 
  scan_in, 
  siclk, 
  soclk, 
  dout, 
  scan_out);
wire [127:0] fdin;
wire [126:0] so;

  input [127:0] din;
  input l1clk;
  input scan_in;


  input siclk;
  input soclk;

  output [127:0] dout;
  output scan_out;
assign fdin[127:0] = din[127:0];






dff #(128)  d0_0 (
.l1clk(l1clk),
.siclk(siclk),
.soclk(soclk),
.d(fdin[127:0]),
.si({scan_in,so[126:0]}),
.so({so[126:0],scan_out}),
.q(dout[127:0])
);












endmodule













// any PARAMS parms go into naming of macro

module ncu_ssiuo4_ctl_l1clkhdr_ctl_macro (
  l2clk, 
  l1en, 
  pce_ov, 
  stop, 
  se, 
  l1clk);


  input l2clk;
  input l1en;
  input pce_ov;
  input stop;
  input se;
  output l1clk;



 

cl_sc1_l1hdr_8x c_0 (


   .l2clk(l2clk),
   .pce(l1en),
   .l1clk(l1clk),
  .se(se),
  .pce_ov(pce_ov),
  .stop(stop)
);



endmodule