// ========== Copyright Header Begin ==========================================
// 
// OpenSPARC T1 Processor File: fpu_out.v
// Copyright (c) 2006 Sun Microsystems, Inc.  All Rights Reserved.
// DO NOT ALTER OR REMOVE COPYRIGHT NOTICES.
// 
// The above named program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public
// License version 2 as published by the Free Software Foundation.
// 
// The above named program is distributed in the hope that it will be 
// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// General Public License for more details.
// 
// You should have received a copy of the GNU General Public
// License along with this work; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
// 
// ========== Copyright Header End ============================================
///////////////////////////////////////////////////////////////////////////////
//
//	FPU result output.
//
///////////////////////////////////////////////////////////////////////////////


module fpu_out (
	d8stg_fdiv_in,
	m6stg_fmul_in,
	a6stg_fadd_in,
	div_id_out_in,
	m6stg_id_in,
	add_id_out_in,
	div_exc_out,
	d8stg_fdivd,
	d8stg_fdivs,
	div_sign_out,
	div_exp_out,
	div_frac_out,
	mul_exc_out,
	m6stg_fmul_dbl_dst,
	m6stg_fmuls,
	mul_sign_out,
	mul_exp_out,
	mul_frac_out,
	add_exc_out,
	a6stg_fcmpop,
	add_cc_out,
	add_fcc_out,
	a6stg_dbl_dst,
	a6stg_sng_dst,
	a6stg_long_dst,
	a6stg_int_dst,
	add_sign_out,
	add_exp_out,
	add_frac_out,
	arst_l,
	grst_l,
	rclk,
	
	fp_cpx_req_cq,
	add_dest_rdy,
	mul_dest_rdy,
	div_dest_rdy,
	fp_cpx_data_ca,

	se,
	si,
	so
);


input		d8stg_fdiv_in;		// div pipe output request next cycle
input		m6stg_fmul_in;		// mul pipe output request next cycle
input		a6stg_fadd_in;		// add pipe output request next cycle
input [9:0]	div_id_out_in;		// div pipe output ID next cycle
input [9:0]	m6stg_id_in;		// mul pipe output ID next cycle
input [9:0]	add_id_out_in;		// add pipe output ID next cycle
input [4:0]	div_exc_out;		// divide pipe result- exception flags
input		d8stg_fdivd;		// divide double- divide stage 8
input		d8stg_fdivs;		// divide single- divide stage 8
input		div_sign_out;		// divide sign output
input [10:0]	div_exp_out;		// divide exponent output
input [51:0]	div_frac_out;		// divide fraction output
input [4:0]	mul_exc_out;		// multiply pipe result- exception flags
input		m6stg_fmul_dbl_dst;	// double precision multiply result
input		m6stg_fmuls;		// fmuls- multiply 6 stage
input		mul_sign_out;		// multiply sign output
input [10:0]	mul_exp_out;		// multiply exponent output
input [51:0]	mul_frac_out;		// multiply fraction output
input [4:0]	add_exc_out;		// add pipe result- exception flags
input		a6stg_fcmpop;		// compare- add 6 stage
input [1:0]	add_cc_out;		// add pipe result- condition
input [1:0]	add_fcc_out;		// add pipe input fcc passed through
input		a6stg_dbl_dst;		// float double result- add 6 stage
input		a6stg_sng_dst;		// float single result- add 6 stage
input		a6stg_long_dst;		// 64bit integer result- add 6 stage
input		a6stg_int_dst;		// 32bit integer result- add 6 stage
input		add_sign_out;		// add sign output
input [10:0]	add_exp_out;		// add exponent output
input [63:0]	add_frac_out;		// add fraction output
input		arst_l;			// global async. reset- asserted low
input		grst_l;			// global sync. reset- asserted low
input		rclk;			// global clock

output [7:0]	fp_cpx_req_cq;		// FPU result request to CPX
output		add_dest_rdy;		// add pipe result request this cycle
output		mul_dest_rdy;		// mul pipe result request this cycle
output		div_dest_rdy;		// div pipe result request this cycle
output [144:0]	fp_cpx_data_ca;		// FPU result to CPX

input           se;                     // scan_enable
input           si;                     // scan in
output          so;                     // scan out


///////////////////////////////////////////////////////////////////////////////
//
//	Outputs of fpu_out_ctl.
//
///////////////////////////////////////////////////////////////////////////////

wire [7:0]	fp_cpx_req_cq;		// FPU result request to CPX
wire [1:0]	req_thread;		// thread ID of result req this cycle
wire [2:0]	dest_rdy;		// pipe with result request this cycle
wire		add_dest_rdy;		// add pipe result request this cycle
wire		mul_dest_rdy;		// mul pipe result request this cycle
wire		div_dest_rdy;		// div pipe result request this cycle


///////////////////////////////////////////////////////////////////////////////
//
//	Outputs of fpu_out_dp.
//
///////////////////////////////////////////////////////////////////////////////

wire [144:0]	fp_cpx_data_ca;		// FPU result to CPX


///////////////////////////////////////////////////////////////////////////////
//
//	Instantiations.
//
///////////////////////////////////////////////////////////////////////////////

fpu_out_ctl fpu_out_ctl (
	.d8stg_fdiv_in			(d8stg_fdiv_in),
	.m6stg_fmul_in			(m6stg_fmul_in),
	.a6stg_fadd_in			(a6stg_fadd_in),
	.div_id_out_in			(div_id_out_in[9:0]),
	.m6stg_id_in			(m6stg_id_in[9:0]),
	.add_id_out_in			(add_id_out_in[9:0]),
	.arst_l				(arst_l),
	.grst_l				(grst_l),
	.rclk			(rclk),

	.fp_cpx_req_cq			(fp_cpx_req_cq[7:0]),
	.req_thread			(req_thread[1:0]),
	.dest_rdy			(dest_rdy[2:0]),
	.add_dest_rdy			(add_dest_rdy),
	.mul_dest_rdy			(mul_dest_rdy),
	.div_dest_rdy			(div_dest_rdy),

	.se                             (se),
        .si                             (si),
        .so                             (scan_out_fpu_out_ctl)
);


fpu_out_dp fpu_out_dp (
	.dest_rdy			(dest_rdy[2:0]),
	.req_thread			(req_thread[1:0]),
	.div_exc_out			(div_exc_out[4:0]),
	.d8stg_fdivd			(d8stg_fdivd),
	.d8stg_fdivs			(d8stg_fdivs),
	.div_sign_out			(div_sign_out),
	.div_exp_out			(div_exp_out[10:0]),
	.div_frac_out			(div_frac_out[51:0]),
	.mul_exc_out			(mul_exc_out[4:0]),
	.m6stg_fmul_dbl_dst		(m6stg_fmul_dbl_dst),
	.m6stg_fmuls			(m6stg_fmuls),
	.mul_sign_out			(mul_sign_out),
	.mul_exp_out			(mul_exp_out[10:0]),
	.mul_frac_out			(mul_frac_out[51:0]),
	.add_exc_out			(add_exc_out[4:0]),
	.a6stg_fcmpop			(a6stg_fcmpop),
	.add_cc_out			(add_cc_out[1:0]),
	.add_fcc_out			(add_fcc_out[1:0]),
	.a6stg_dbl_dst			(a6stg_dbl_dst),
	.a6stg_sng_dst			(a6stg_sng_dst),
	.a6stg_long_dst			(a6stg_long_dst),
	.a6stg_int_dst			(a6stg_int_dst),
	.add_sign_out			(add_sign_out),
	.add_exp_out			(add_exp_out[10:0]),
	.add_frac_out			(add_frac_out[63:0]),
	.rclk			(rclk),

	.fp_cpx_data_ca			(fp_cpx_data_ca[144:0]),

	.se                             (se),
        .si                             (scan_out_fpu_out_ctl),
        .so                             (so)
);


endmodule