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// ========== Copyright Header Begin ==========================================
// 
// OpenSPARC T1 Processor File: tlu_mmu_dp.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 ============================================
///////////////////////////////////////////////////////////////////////
/*
//      Description:    MMU Datapath - I & D.
*/
////////////////////////////////////////////////////////////////////////
// Global header file includes
////////////////////////////////////////////////////////////////////////
// system level definition file which contains the /*
/* ========== Copyright Header Begin ==========================================
*
* OpenSPARC T1 Processor File: sys.h
* 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 ============================================
*/
// -*- verilog -*-
////////////////////////////////////////////////////////////////////////
/*
//
// Description:         Global header file that contain definitions that
//                      are common/shared at the systme level
*/
////////////////////////////////////////////////////////////////////////
//
// Setting the time scale
// If the timescale changes, JP_TIMESCALE may also have to change.
`timescale      1ps/1ps
 
//
// JBUS clock
// =========
//
 
 
 
// Afara Link Defines
// ==================
 
// Reliable Link
 
 
 
 
// Afara Link Objects
 
 
// Afara Link Object Format - Reliable Link
 
 
 
 
 
 
 
 
 
 
// Afara Link Object Format - Congestion
 
 
 
 
 
 
 
 
 
 
 
// Afara Link Object Format - Acknowledge
 
 
 
 
 
 
 
 
 
 
 
// Afara Link Object Format - Request
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
// Afara Link Object Format - Message
 
 
 
// Acknowledge Types
 
 
 
 
// Request Types
 
 
 
 
 
// Afara Link Frame
 
 
 
//
// UCB Packet Type
// ===============
//
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
//
// UCB Data Packet Format
// ======================
//
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
// Size encoding for the UCB_SIZE_HI/LO field
// 000 - byte
// 001 - half-word
// 010 - word
// 011 - double-word
// 111 - quad-word
 
 
 
 
 
 
 
//
// UCB Interrupt Packet Format
// ===========================
//
 
 
 
 
 
 
 
 
 
 
//`define UCB_THR_HI             9      // (6) cpu/thread ID shared with
//`define UCB_THR_LO             4             data packet format
//`define UCB_PKT_HI             3      // (4) packet type shared with
//`define UCB_PKT_LO             0      //     data packet format
 
 
 
 
 
 
 
//
// FCRAM Bus Widths
// ================
//
 
 
 
 
 
 
//
// ENET clock periods
// ==================
//
 
 
 
 
//
// JBus Bridge defines
// =================
//
 
 
 
 
 
 
 
 
 
 
 
//
// PCI Device Address Configuration
// ================================
//
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
                                        // time scale definition
 
////////////////////////////////////////////////////////////////////////
// Local header file includes / local defines
////////////////////////////////////////////////////////////////////////
 
/*
/* ========== Copyright Header Begin ==========================================
*
* OpenSPARC T1 Processor File: tlu.h
* 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 ============================================
*/
// ifu trap types
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
//
// modified for hypervisor support
//
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
//
 
 
// modified due to bug 2588
// `define      TSA_PSTATE_VRANGE2_LO 16 
 
 
//
 
 
 
 
 
 
 
 
 
 
 
//
// added due to Niagara SRAMs methodology
// The following defines have been replaced due
// the memory macro replacement from:
// bw_r_rf32x144 -> 2x bw_r_rf32x80
/*
`define TSA_MEM_WIDTH     144
`define TSA_HTSTATE_HI    142 //  3 bits
`define TSA_HTSTATE_LO    140
`define TSA_TPC_HI        138 // 47 bits
`define TSA_TPC_LO         92
`define TSA_TNPC_HI        90 // 47 bits
`define TSA_TNPC_LO        44
`define TSA_TSTATE_HI      40 // 29 bits
`define TSA_TSTATE_LO      12
`define TSA_TTYPE_HI        8 //  9 bits
`define TSA_TTYPE_LO        0
`define TSA_MEM_CWP_LO     12
`define TSA_MEM_CWP_HI     14
`define TSA_MEM_PSTATE_LO  15
`define TSA_MEM_PSTATE_HI  22
`define TSA_MEM_ASI_LO     23
`define TSA_MEM_ASI_HI     30
`define TSA_MEM_CCR_LO     31
`define TSA_MEM_CCR_HI     38
`define TSA_MEM_GL_LO      39
`define TSA_MEM_GL_HI      40
*/
 
 
 
 
 
 
 
 
 
 
 
//
 
 
 
 
 
 
 
 
 
 
 
// HPSTATE position definitions within wsr
 
 
 
 
 
 
// TSTATE postition definitions within wsr
 
 
 
 
 
 
 
// modified due to bug 2588
 
 
// added for bug 2584 
 
 
 
 
//
 
 
 
 
 
 
 
//
// tick_cmp and stick_cmp definitions
 
 
 
 
 
//
// PIB WRAP
 
 
 
// HPSTATE postition definitions
 
 
 
 
 
 
// HTBA definitions
 
 
 
 
// TBA definitions
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
//
// added for the hypervisor support
 
 
// modified due to bug 2588
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
//
// compressed PSTATE WSR definitions
 
 
 
 
 
 
 
 
 
 
 
 
 
 
//
// ASI_QUEUE for hypervisor
// Queues are: CPU_MONODO
//             DEV_MONODO
//             RESUMABLE_ERROR
//             NON_RESUMABLE_ERROR
//
 
 
 
 
 
 
 
// for address range checking
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
//
// Niagara scratch-pads
// VA address of 0x20 and 0x28 are exclusive to hypervisor
// 
 
 
 
 
 
 
 
//
// range checking 
 
 
 
 
 
 
 
// PIB related definitions
// Bit definition for events
 
 
 
 
 
 
 
 
 
// 
// PIB related definitions
// PCR and PIC address definitions
 
 
 
// 
// PCR bit definitions
 
 
 
 
 
 
 
//
 
 
 
 
 
 
 
 
 
// PIC definitions
 
 
 
 
 
 
 
 
// PIC  mask bit position definitions
 
 
 
 
 
 
 
 
 
 
// added define from sparc_tlu_int.v 
 
 
 
 
 
 
 
 
 
 
//
// shadow scan related definitions 
 
// modified due to logic redistribution
// `define TCL_SSCAN_WIDTH 12 
 
 
 
 
 
// `define TCL_SSCAN_LO 51 
 
 
 
 
// 
// position definitions - TDP
 
 
 
 
 
 
// 
// position definitions - TCL
 
 
 
 
// 
// To speedup POR for verification purposes
 
 
//FPGA_SYN enables all FPGA related modifications
 
 
 
 
 
module tlu_mmu_dp ( /*AUTOARG*/
   // Outputs
   tlu_dtsb_split_w2, tlu_dtsb_size_w2, tlu_dtag_access_w2,
   tlu_itsb_split_w2, tlu_itsb_size_w2,
   tlu_itlb_tte_tag_w2, tlu_itlb_tte_data_w2, tlu_dtlb_tte_tag_w2,
   tlu_dtlb_tte_data_w2, tlu_idtlb_dmp_key_g, tlu_dsfsr_flt_vld,
   tlu_isfsr_flt_vld, mra_wdata, tlu_ctxt_cfg_w2, tlu_tag_access_ctxt_g,
   lsu_exu_ldxa_data_g, so, tlu_tsb_base_w2_d1,
   // Inputs
   tlu_addr_msk_g, dmmu_any_sfsr_wr, dmmu_sfsr_wr_en_l, dmmu_sfar_wr_en_l,
   immu_any_sfsr_wr, immu_sfsr_wr_en_l, tlu_lng_ltncy_en_l,
   lsu_tlu_dside_ctxt_m, lsu_tlu_pctxt_m, tlu_tag_access_ctxt_sel_m,
   lsu_tlu_st_rs3_data_b63t59_g, lsu_tlu_st_rs3_data_b47t0_g,
   exu_lsu_ldst_va_e, tlu_idtsb_8k_ptr,lsu_tlu_tlb_dmp_va_m, ifu_tlu_pc_m,
   tlu_slxa_thrd_sel,
   tlu_tte_tag_g, tlu_dmp_key_vld_g, tlb_access_rst_l,
   tag_access_wdata_sel, mra_rdata, tlu_admp_key_sel,
   tlu_isfsr_din_g, tlu_dsfsr_din_g,
   tlu_tte_wr_pid_g, tlu_tte_real_g, tlu_ldxa_l1mx1_sel,
   tlu_ldxa_l1mx2_sel, tlu_ldxa_l2mx1_sel, rclk, grst_l, arst_l,
   tlu_tlb_tag_invrt_parity, tlu_tlb_data_invrt_parity, tlu_sun4r_tte_g,
   tlu_tsb_rd_ps0_sel, si, se, tlu_tlb_access_en_l_d1
   ) ;
 
/*AUTOINPUT*/
// Beginning of automatic inputs (from unused autoinst inputs)
// End of automatics
 
input                   tlu_addr_msk_g ;        // address masking active for thread in pipe.
input                   dmmu_any_sfsr_wr ;
input   [3:0]            dmmu_sfsr_wr_en_l ;
input   [3:0]            dmmu_sfar_wr_en_l ;
input                   immu_any_sfsr_wr ;
input   [3:0]           immu_sfsr_wr_en_l ;
input   [12:0]          lsu_tlu_dside_ctxt_m ;
input   [12:0]          lsu_tlu_pctxt_m ;
input   [2:0]            tlu_tag_access_ctxt_sel_m ;
// rs3_data split for vlint purposes.
input   [63:59]         lsu_tlu_st_rs3_data_b63t59_g ;
input   [47:0]           lsu_tlu_st_rs3_data_b47t0_g ;
input   [47:0]           exu_lsu_ldst_va_e ;
input   [47:0]          tlu_idtsb_8k_ptr ;
input   [47:13]         lsu_tlu_tlb_dmp_va_m ;
input   [47:13]         ifu_tlu_pc_m ;
input   [3:0]            tlu_slxa_thrd_sel ;
//input         [63:0]          int_tlu_asi_data;
//input                 int_tlu_asi_data_vld;
input   [2:0]            tlu_tte_tag_g ;
input   [4:0]            tlu_dmp_key_vld_g ;
//input                 tlb_access_en_l ;
input                   tlu_tlb_access_en_l_d1 ;
input                   tlb_access_rst_l ;
 
input   [2:0]            tag_access_wdata_sel ;
input   [155:6]         mra_rdata ;
 
input                   tlu_admp_key_sel ;
 
input   [23:0]           tlu_isfsr_din_g ;
input   [23:0]           tlu_dsfsr_din_g ;
 
input   [2:0]            tlu_tte_wr_pid_g ;      // thread selected pid
input                   tlu_tte_real_g ;        // tte is real          
 
input   [3:0]            tlu_ldxa_l1mx1_sel ;    // mmu ldxa level1 mx1 sel
input   [3:0]            tlu_ldxa_l1mx2_sel ;    // mmu ldxa level1 mx2 sel
input   [2:0]            tlu_ldxa_l2mx1_sel ;    // mmu ldxa level2 mx1 sel
input                   tlu_tlb_tag_invrt_parity ;      // invert parity for tag write
input                   tlu_tlb_data_invrt_parity ;     // invert parity for data write
input                   tlu_sun4r_tte_g ;       // sun4r vs. sun4v tte.
 
input                  tlu_lng_ltncy_en_l ;
 
input                  tlu_tsb_rd_ps0_sel ;
 
input                 rclk ;
input                 arst_l ;
input                 grst_l ;
input                 si ;
input                 se ;
 
output                        so ;
 
//output  [47:13]         tlu_dtsb_base_w2 ;    // represents ps0
output                  tlu_dtsb_split_w2 ;
output  [3:0]           tlu_dtsb_size_w2 ;
output  [47:13]         tlu_dtag_access_w2 ;    // used to represent both i/d.
//output  [47:13]         tlu_itsb_base_w2 ;    // represents ps1
output                  tlu_itsb_split_w2 ;
output  [3:0]           tlu_itsb_size_w2 ;
//output  [32:13]               tlu_itag_access_w2 ;    // to be obsoleted.
output  [58:0]           tlu_itlb_tte_tag_w2 ;
output  [42:0]           tlu_itlb_tte_data_w2 ;
output  [58:0]           tlu_dtlb_tte_tag_w2 ;
output  [42:0]           tlu_dtlb_tte_data_w2 ;
//output        [63:0]          tlu_lsu_ldxa_data_w2 ;
output  [5:0]           tlu_ctxt_cfg_w2 ;       // i/d context zero/non-zero config.
output  [40:0]           tlu_idtlb_dmp_key_g ;
 
 
output  [3:0]            tlu_dsfsr_flt_vld ;
output  [3:0]            tlu_isfsr_flt_vld ;
 
output  [12:0]           tlu_tag_access_ctxt_g ;
output  [63:0]           lsu_exu_ldxa_data_g ;
 
output  [47:13]         tlu_tsb_base_w2_d1 ;
 
///output       tlu_tag_access_nctxt_g ;                // tag-access contains nucleus context.
 
output  [155:0]          mra_wdata ;
 
wire    [47:0]           ldst_va_m,ldst_va_g ;
// st_rs3_data partitioned for vlint.
//wire  [63:0]          st_rs3_data_g ;
wire    [63:59]         st_rs3_data_b63t59_g ;
wire    [39:8]          st_rs3_data_b39t8_g ;
wire    [6:1]           st_rs3_data_b6t1_g ;
wire    [63:0]           tag_target ;
wire    [47:13]         dtag_access_w2 ;
wire    [23:0]           dsfsr,isfsr ;
wire    [23:0]           dsfsr0,isfsr0 ;
wire    [23:0]           dsfsr1,isfsr1 ;
wire    [23:0]           dsfsr2,isfsr2 ;
wire    [23:0]           dsfsr3,isfsr3 ;
wire    [47:0]           dsfar ;
wire    [47:0]           dsfar0,dsfar1 ;
wire    [47:0]           dsfar2,dsfar3 ;
wire    [23:0]           dsfsr_din ;
wire    [23:0]           isfsr_din ;
//wire  [39:22]         tte_relocated_pa ;
wire    [40:0]           dmp_key ;
wire    [47:0]           tag_access_w2 ;
wire    [41:0]           idtte_data_w2 ;
wire                    tlb_access0_clk, tlb_access1_clk ;
wire    [40:0]           idtlb_dmp_key_pend ;
wire    [47:0]           tag_access_wdata ;
wire    [12:0]           tag_access_ctxt_m,tag_access_ctxt_g ;
// buses split for vlint purposes.
wire    [58:55]         idtte_tag_b58t55_g ;
wire    [53:0]           idtte_tag_b53t0_g ;
wire    [58:55]         idtte_tag_b58t55_w2 ;
wire    [53:0]           idtte_tag_b53t0_w2 ;
wire    [41:0]           idtte_data_g ;
wire    [47:13]         tlb_dmp_va_g ;
wire    [47:0]   ldxa_l1mx1_dout_e ;
wire    [47:0]   ldxa_l1mx1_dout_m ;
 
 //=========================================================================================
 //    RESET/CLK
 //=========================================================================================
 
    wire       clk;
    assign     clk = rclk;
 
    wire       rst_l;
 
    dffrl_async rstff(.din (grst_l),
                      .q   (rst_l),
                      .clk (clk), .se(se), .si(), .so(),
                      .rst_l (arst_l));
 
 
//=========================================================================================
//      Staging
//=========================================================================================
 
// Stage
wire [47:13] pc_g ;
dff  #(35) stg_w (
        .din    (ifu_tlu_pc_m[47:13]),
        .q      (pc_g[47:13]),
        .clk    (clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
//assign        pc_g[47:13] = ifu_tlu_pc_w[47:13] ;
 
// Stage va
dff  #(48) stg_m (
        .din    (exu_lsu_ldst_va_e[47:0]),
        .q      (ldst_va_m[47:0]),
        .clk    (clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
dff  #(48) stg_g (
        .din    (ldst_va_m[47:0]),
        .q      (ldst_va_g[47:0]),
        .clk    (clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
dff  #(35) dstg_g (
        .din    (lsu_tlu_tlb_dmp_va_m[47:13]),
        .q      (tlb_dmp_va_g[47:13]),
        .clk    (clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
//=========================================================================================
 
wire [4:0] tlu_dmp_key_vld_d1 ;
wire [47:13] tlb_dmp_va_d1 ;
dff  #(40) dstg_d1 (
        .din    ({tlb_dmp_va_g[47:13],tlu_dmp_key_vld_g[4:0]}),
        .q      ({tlb_dmp_va_d1[47:13],tlu_dmp_key_vld_d1[4:0]}),
        .clk    (clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
wire    [2:0]    tlu_tte_tag_d1,tlu_tte_wr_pid_d1 ;
wire            tlu_tte_real_d1,tlu_tlb_tag_invrt_parity_d1 ;
wire    [47:13] dmp_va_d1 ;
wire    [5:0]    dmp_key_vld_d1 ;
dp_mux2es #(41) dmp_key_sel (
                .in0    ({tlb_dmp_va_d1[47:13],tlu_dmp_key_vld_d1[4:0],tlu_tte_real_d1}),
                .in1    ({tag_access_w2[47:13],1'b1,tlu_tte_tag_d1[2:0],tlu_tte_real_d1,tlu_tte_real_d1}),
                //.in1  ({tag_access_w2[47:13],1'b1,tlu_tte_tag_d1[2:0],1'b0,tlu_tte_real_d1}), // Bug 3754
                .sel    (tlu_admp_key_sel),
                .dout   ({dmp_va_d1[47:13],dmp_key_vld_d1[5:0]})
        );
 
assign  dmp_key[40:0] =
        {
        dmp_va_d1[47:28],        // (20b)
        dmp_key_vld_d1[5],       // (1b)
        dmp_va_d1[27:22],        // (6b)
        dmp_key_vld_d1[4],       // (1b)
        dmp_va_d1[21:16],        // (6b)
        dmp_key_vld_d1[3],       // (1b)
        dmp_va_d1[15:13],        // (3b)
        dmp_key_vld_d1[2],       // (1b)
        dmp_key_vld_d1[1],       // (1b)
        dmp_key_vld_d1[0]        // (1b)
        } ;
 
 
//wire  tlb_access_en_l_d1 ;
wire    tlb_access2_clk ;
 
 
 
 
 
 
 
 
 
 
 
 
 
// Advance by a cycle. Do not have to reset state.
 
dffrle  #(41) stg_w2 (
        .din    (dmp_key[40:0]),
        .q      (idtlb_dmp_key_pend[40:0]),
        .rst_l  (tlb_access_rst_l),
        .en (~(tlu_tlb_access_en_l_d1)), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
assign  tlu_idtlb_dmp_key_g[40:0] = idtlb_dmp_key_pend[40:0] ;
 
 
//=========================================================================================
//      WR DATA FOR MRA
//=========================================================================================
 
// Format for each entry of MRA on a per thread basis.
// Current :
//      |       dtsb(48b)       |       dtag_access(48b)        |       dsfar(48b)      |       
//      |       itsb(48b)       |       itag_access(48b)        |                       |       
// New(Hyp,Legacy) : 8 tsb per thread instead of 2. dsfar removed.
// -This allows tag-access to be lined up with simultaneous reads of tsb
// -zero-ctxt and non-zero-ctxt tag-access will have to be distinguished either
// by doing a zero-detect on the lower 13b of the write-data or using a disinct asi.
//      |       zcps0_dtsb(48b) |       zcps1_dtsb(48b) |       zctxt_dtag_acc(48b) | dzctxt_cfg(6b) |
//      |       zcps0_itsb(48b) |       zcps1_itsb(48b) |       zctxt_itag_acc(48b) | izctxt_cfg(6b) |
//      |       nzcps0_dtsb(48b)|       nzcps1_dtsb(48b)|       nzctxt_dtag_acc(48b)| dnzctxt_cfg(6b)|
//      |       nzcps0_itsb(48b)|       nzcps1_itsb(48b)|       nzctxt_itag_acc(48b)| inzctxt_cfg(6b)|
 
mux3ds #(13)    tag_acc_ctxtmx(
                .in0    (lsu_tlu_pctxt_m[12:0]), // iside selects primary ctxt
                .in1    (13'd0),                 // iside selects nucleus ctxt
                .in2    (lsu_tlu_dside_ctxt_m[12:0]), // otherwise select dside ctxt
                .sel0   (tlu_tag_access_ctxt_sel_m[0]),
                .sel1   (tlu_tag_access_ctxt_sel_m[1]),
                .sel2   (tlu_tag_access_ctxt_sel_m[2]),
                .dout   (tag_access_ctxt_m[12:0])
        );
 
/*assign        tag_access_ctxt_m[12:0] =
        tlu_tag_access_ctxt_sel_m[0] ?  lsu_tlu_pctxt_m[12:0] :         // iside selects primary ctxt
                tlu_tag_access_ctxt_sel_m[1] ?  13'd0  :                // iside selects nucleus ctxt
                        tlu_tag_access_ctxt_sel_m[2] ? lsu_tlu_dside_ctxt_m[12:0] : 13'bx_xxxx_xxxx_xxxx ;                      // otherwise select dside ctxt
*/
 
dff  #(13) ctxt_stgg (
        .din    (tag_access_ctxt_m[12:0]),
        .q      (tag_access_ctxt_g[12:0]),
        .clk    (clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
// pstate.am masking
wire    [15:0]   ldst_va_masked_g ;
assign  ldst_va_masked_g[15:0] = ldst_va_g[47:32] & {16{~tlu_addr_msk_g}} ;
 
mux3ds #(48)    dtag_access_dsel(
                .in0    ({ldst_va_masked_g[15:0],ldst_va_g[31:13],tag_access_ctxt_g[12:0]}), // dside hardware
                .in1    ({pc_g[47:13],tag_access_ctxt_g[12:0]}), // iside hardware
                .in2    (lsu_tlu_st_rs3_data_b47t0_g[47:0]),     // stxa,tsb write as an example.
                .sel0   (tag_access_wdata_sel[0]),
                .sel1   (tag_access_wdata_sel[1]),
                .sel2   (tag_access_wdata_sel[2]),
                .dout   (tag_access_wdata[47:0])
        );
 
// Determine whether context is nucleus or not.
//assign tlu_tag_access_nctxt_g = (tag_access_wdata[12:0] == 13'd0) ;
assign        tlu_tag_access_ctxt_g[12:0] = tag_access_ctxt_g[12:0] ;
 
wire    [47:0]   dsfar_wdata ;
dp_mux2es #(48) dsfar_dsel(
                .in0    ({ldst_va_masked_g[15:0],ldst_va_g[31:0]}), // dsfar;trap
                .in1    (lsu_tlu_st_rs3_data_b47t0_g[47:0]), // asi write
                .sel    (dmmu_any_sfsr_wr),
                .dout   (dsfar_wdata[47:0])
        );
 
// Warning for Grape Mapper - the number of bits may have to be changed to
// map implementation.
assign  mra_wdata[155:0] =
        // Bug 4676 - tsb rsrved field
        {lsu_tlu_st_rs3_data_b47t0_g[47:12],8'd0,
                lsu_tlu_st_rs3_data_b47t0_g[3:0],        //ps0 zctxt,nzctxt tsb
         lsu_tlu_st_rs3_data_b47t0_g[47:12],8'd0,
                lsu_tlu_st_rs3_data_b47t0_g[3:0],        //ps1 zctxt,nzctxt tsb
         tag_access_wdata[47:0],         //i/d tag-access
         lsu_tlu_st_rs3_data_b47t0_g[10:8],     //ps1 page size
         lsu_tlu_st_rs3_data_b47t0_g[2:0],       //ps0 page size
         6'd0};
 
 
//=========================================================================================
//      D-TAG ACCESS
//=========================================================================================
 
// 4 registers for the 4 threads.
// 35b of VA || 13b Ctxt.
// ** Ctxt is to be read as zero if there is no context associated with the access **
// VA will be sing-extended based on bit 47. 
 
// Update in w2.
assign  dtag_access_w2[47:13] = mra_rdata[59:12+13] ;
 
// Can this be shared with the i-side ?
assign  tlu_dtag_access_w2[47:13] = dtag_access_w2[47:13] ;
 
 
//=========================================================================================
//      I-TAG ACCESS
//=========================================================================================
 
// 4 registers for the 4 threads.
// 35b of VA || 13b Ctxt.
// ** Ctxt is to be read as zero if there is no context associated with the access **
// VA will be sing-extended based on bit 47. 
 
// Update in w2.
// SPARC_HPV_EN - This needs to be obsoleted. Common tag-access will be superimposed
// on dta_access bus.
 
//assign        itag_access_w2[32:13] = mra_rdata[`MRA_TACCESS_HI-15:`MRA_TACCESS_LO+13] ;
//assign        itag_access_w2[47:0] = mra_rdata[`MRA_TACCESS_HI:`MRA_TACCESS_LO] ;
 
//assign        tlu_itag_access_w2[32:13] = itag_access_w2[32:13] ;
 
 
//=========================================================================================
//      D-TAG TARGET
//=========================================================================================
 
// Tag Target is based on currently selected thread.
 
// Thread0,1,2,3
assign tag_target[63:0] =
        {3'b000,
        ldxa_l1mx1_dout_m[12:0], // Context
        //tag_access_w2[12:0],          // Context
        6'b000000,
        {16{ldxa_l1mx1_dout_m[47]}},    // Sign-extend VA[47]
        //{16{tag_access_w2[47]}},      // Sign-extend VA[47]
        ldxa_l1mx1_dout_m[47:22]};      // VA // Bug 3975.
        //tag_access_w2[47:22]};        // VA
 
//=========================================================================================
//      D-TSB
//=========================================================================================
 
// Note : on interface, dtsb represents ps0 tsbs, itsb represents ps1 tsbs. 
 
wire    [47:0]   tsb_ps0, tsb_ps1 ;
assign  tsb_ps0[47:0] = mra_rdata[155:108] ;
assign  tsb_ps1[47:0] = mra_rdata[107:60] ;
 
assign  tlu_dtsb_split_w2 = tsb_ps0[12] ;
// SPARC_HPV_EN - extend tsb_size by 1b.
assign  tlu_dtsb_size_w2[3:0] = tsb_ps0[3:0] ;
 
//=========================================================================================
//      CTXT CONFIG
//=========================================================================================
 
wire    [5:0]    ptr_ctxt_cfg ;
assign  tlu_ctxt_cfg_w2[5:0] =   mra_rdata[11:6] ;
 
dff  #(6) pctxt_stgm (
        .din    (mra_rdata[11:6]),
        .q      (ptr_ctxt_cfg[5:0]),
        .clk    (clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
//=========================================================================================
//      I-TSB
//=========================================================================================
 
assign  tlu_itsb_split_w2 = tsb_ps1[12] ;
assign  tlu_itsb_size_w2[3:0] = tsb_ps1[3:0] ;
 
//=========================================================================================
//      STAGE TSB BASE FOR USE IN PTR CALCULATION
//=========================================================================================
 
wire    [47:13] tsb_base ;
assign  tsb_base[47:13] =
        tlu_tsb_rd_ps0_sel ? tsb_ps0[47:13] : tsb_ps1[47:13] ;
        //tlu_tsb_rd_ps0_sel ? dtsb[47:13] : itsb[47:13] ;
 
dff  #(35) tsbbase_stgm (
        .din    (tsb_base[47:13]),
        .q      (tlu_tsb_base_w2_d1[47:13]),
        .clk    (clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
//=========================================================================================
//      8K and 64K Ptr
//=========================================================================================
 
// In MMU Control.
 
//=========================================================================================
//      Direct Ptr
//=========================================================================================
 
//=========================================================================================
//      I-/D TLB Fill : TTE Tag and Data.
//=========================================================================================
 
 
// TTE Tag is formed from Tag Access.
// TTE Data is formed from rs3_data for store.
 
// Timing needs to be fixed !!! Partition mode will add one more cycle
// to path. tlb write will occur in w3.
 
// partitioned for vlint purposes.
//assign        st_rs3_data_g[63:0] = lsu_tlu_st_rs3_data_g[63:0] ; 
assign  st_rs3_data_b63t59_g[63:59] = lsu_tlu_st_rs3_data_b63t59_g[63:59] ;
assign  st_rs3_data_b39t8_g[39:8] = lsu_tlu_st_rs3_data_b47t0_g[39:8] ;
assign  st_rs3_data_b6t1_g[6:1] = lsu_tlu_st_rs3_data_b47t0_g[6:1] ;
 
assign  tag_access_w2[47:0] = mra_rdata[59:12] ;
 
wire idtte_tag_vld_g,idtte_tag_vld_d1 ;
assign  idtte_tag_vld_g =
        st_rs3_data_b63t59_g[63] ;
wire idtte_tag_lock_g,idtte_tag_lock_d1 ;
assign  idtte_tag_lock_g =
        tlu_sun4r_tte_g ? st_rs3_data_b6t1_g[6] : st_rs3_data_b63t59_g[61] ;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
// Stage some bits to match posedge rd for lng-lat reads of mra.
 
dffe  #(10) stgd1_idttetg (
        .din    ({idtte_tag_vld_g,idtte_tag_lock_g,tlu_tte_tag_g[2:0],
                tlu_tte_wr_pid_g[2:0],tlu_tte_real_g,tlu_tlb_tag_invrt_parity}),
        .q      ({idtte_tag_vld_d1,idtte_tag_lock_d1,tlu_tte_tag_d1[2:0],
                tlu_tte_wr_pid_d1[2:0],tlu_tte_real_d1,tlu_tlb_tag_invrt_parity_d1}),
        .en (~(tlu_lng_ltncy_en_l)), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
// assumption is that tag_access_w2 gets delayed by a cycle because
// the rd is now posedge.
assign idtte_tag_b53t0_g[53:0] =
        {tag_access_w2[47:22],          // VA_tag       (26b)
        tlu_tte_tag_d1[2],              // 27:22 are valid (1b)
        idtte_tag_vld_d1,               // V            (1b) can be 0 or 1
        idtte_tag_lock_d1,              // L            (1b) 
        1'b1,                           // U            (1b) : must be set on write
        tag_access_w2[21:16],           // VA_tag       (6b)
        tlu_tte_tag_d1[1],              // 21:16 are valid (1b)
        tag_access_w2[15:13],           // VA_tag       (3b)
        tlu_tte_tag_d1[0],               // 15:13 are valid (1b)
        tag_access_w2[12:0]              // Ctxt b12:0   (13b)
                        };
 
assign  idtte_tag_b58t55_g[58:55] = {tlu_tte_wr_pid_d1[2:0],tlu_tte_real_d1};
// V and U bit omitted from tag as it can change once in tlb
// assign       idtte_tag_g[54] = 
// tlu_tlb_tag_invrt_parity_d1^(^{idtte_tag_g[58:55],idtte_tag_g[53:27],idtte_tag_g[25],idtte_tag_g[23:0]}) ;
 
// Additional page size bit does not have to be included. EP ? 
// SUN4R TTE
wire    [41:0]   idtte_data_sun4r_g ;
assign idtte_data_sun4r_g[41:0] =
        {st_rs3_data_b39t8_g[39:22],    // PA           (18b)
        ~tlu_tte_tag_g[2],              // 27:20 - mx sel (1b) : active-low
        st_rs3_data_b39t8_g[21:16],     // PA           (6b)
        ~tlu_tte_tag_g[1],              // 21:16 - mx sel (1b) : active-low
        st_rs3_data_b39t8_g[15:13],     // PA           (3b)
        ~tlu_tte_tag_g[0],               // 15:13 - mx sel (1b) : active-low
        st_rs3_data_b63t59_g[63],       // V            (1b)
        st_rs3_data_b63t59_g[60],       // NFO          (1b)
        st_rs3_data_b63t59_g[59],       // IE           (1b)
        st_rs3_data_b6t1_g[6],          // L            (1b)
        st_rs3_data_b6t1_g[5:4],        // CP/CV        (2b)
        st_rs3_data_b6t1_g[3],          // E            (1b)
        st_rs3_data_b6t1_g[2],          // P            (1b)
        st_rs3_data_b6t1_g[1],          // W            (1b)
        3'b000};                        // Spare        (3b)
// SUN4V TTE
wire    [41:0]   idtte_data_sun4v_g ;
assign idtte_data_sun4v_g[41:0] =
        {st_rs3_data_b39t8_g[39:22],    // PA           (18b)
        ~tlu_tte_tag_g[2],              // 27:20 - mx sel (1b) : active-low
        st_rs3_data_b39t8_g[21:16],     // PA           (6b)
        ~tlu_tte_tag_g[1],              // 21:16 - mx sel (1b) : active-low
        st_rs3_data_b39t8_g[15:13],     // PA           (3b)
        ~tlu_tte_tag_g[0],               // 15:13 - mx sel (1b) : active-low
        st_rs3_data_b63t59_g[63],       // V            (1b) // 4->63. Bug 2977
        st_rs3_data_b63t59_g[62],       // NFO          (1b) // 10->62
        st_rs3_data_b39t8_g[12],        // IE           (1b)
        st_rs3_data_b63t59_g[61],       // L            (1b)
        //1'b0,                         //// L(none)    (1b)
        st_rs3_data_b39t8_g[10:9],      // CP/CV        (2b) // 9:8 -> 10:9
        st_rs3_data_b39t8_g[11],        // E            (1b)
        st_rs3_data_b39t8_g[8],         // P            (1b) // 7->8
        st_rs3_data_b6t1_g[6],          // W            (1b) // 5->6
        3'b000};                        // Spare        (3b)
assign  idtte_data_g[41:0] =
        tlu_sun4r_tte_g ? idtte_data_sun4r_g[41:0] : idtte_data_sun4v_g[41:0];
 
// Generate Parity for tte data. Match to DP Macro.
//assign idtte_data_g[42] = tlu_tlb_data_invrt_parity^(^idtte_data_g[41:0]) ;
 
/*dff  #(1) stgd1_tlbacc (
        .din    (tlb_access_en_l),
        .q      (tlb_access_en_l_d1),
        .clk    (clk),
        .se     (1'b0),       .si (),          .so ()
        );*/
 
// flopping of tte-tag is delayed by a cycle,tte-data
// is not. wr-vld will match tte-tag.
 
 
 
 
 
 
 
 
 
 
 
 
 
// Ship for write to TLB. Doesn't have to be resettable.
// Shorten by a bit, as parity will be generated based on output.
// Instead of removing the bit, use it for parity-invrt bit
// in section below.
/*dff  #(59) stgw2_ttetg (
        .din    (idtte_tag_g[58:0]),
        .q      (idtte_tag_w2[58:0]),
        .clk    (tlb_access0_clk),
        .se     (1'b0),       .si (),          .so ()
        ); */
 
 
dffe  #(58) stgw2_ttetg (
        .din    ({idtte_tag_b58t55_g[58:55],idtte_tag_b53t0_g[53:0]}),
        .q      ({idtte_tag_b58t55_w2[58:55],idtte_tag_b53t0_w2[53:0]}),
        .en (~(tlu_tlb_access_en_l_d1)), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
// Shorten by a bit, as parity will be generated based on output.
// Instead of removing the bit, use it for parity-invrt bit
// in section below.
/*dff  #(43) stgw2_ttedt (
        .din    (idtte_data_g[42:0]),
        .q      (idtte_data_w2[42:0]),
        .clk    (tlb_access1_clk),
        .se     (1'b0),       .si (),          .so ()
        );*/
 
 
dffe  #(42) stgw2_ttedt (
        .din    (idtte_data_g[41:0]),
        .q      (idtte_data_w2[41:0]),
        .en (~(tlu_lng_ltncy_en_l)), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
wire    parity_tag,parity_data ;
wire    parity_tag_d1,parity_data_d1 ;
assign tlu_dtlb_tte_tag_w2[58:0] = {idtte_tag_b58t55_w2[58:55],parity_tag_d1,idtte_tag_b53t0_w2[53:0]} ;
assign tlu_itlb_tte_tag_w2[58:0] = {idtte_tag_b58t55_w2[58:55],parity_tag_d1,idtte_tag_b53t0_w2[53:0]} ;
assign tlu_dtlb_tte_data_w2[42:0] = {parity_data_d1,idtte_data_w2[41:0]} ;
assign tlu_itlb_tte_data_w2[42:0] = {parity_data_d1,idtte_data_w2[41:0]} ;
 
//=========================================================================================
//      PARITY GEN FOR TTE TAG & DATA
//=========================================================================================
 
// Timing Change : Since parity is not required until the write, and the write
// is preceeded by a auto-demap, the parity generation can be hidden in the
// cycle of auto-demap.
 
wire    tlu_tlb_tag_invrt_parity_d2,tlu_tlb_data_invrt_parity_d1 ;
 
 
dffe  #(1) stgw2_ttetgpar (
        .din    (tlu_tlb_tag_invrt_parity_d1),
        .q      (tlu_tlb_tag_invrt_parity_d2),
        .en (~(tlu_tlb_access_en_l_d1)), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
dffe  #(1) stgw2_ttedtpar (
        .din    (tlu_tlb_data_invrt_parity),
        .q      (tlu_tlb_data_invrt_parity_d1),
        .en (~(tlu_lng_ltncy_en_l)), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
assign  parity_tag =
tlu_tlb_tag_invrt_parity_d2^(^{idtte_tag_b58t55_w2[58:55],
        idtte_tag_b53t0_w2[53:27],idtte_tag_b53t0_w2[25],idtte_tag_b53t0_w2[23:0]}) ;
assign parity_data = tlu_tlb_data_invrt_parity_d1^(^idtte_data_w2[41:0]) ;
//assign        idtte_tag_w2[54] = 
//tlu_tlb_tag_invrt_parity_d2^(^{idtte_tag_w2[58:55],idtte_tag_w2[53:27],idtte_tag_w2[25],idtte_tag_w2[23:0]}) ;
//assign idtte_data_w2[42] = tlu_tlb_data_invrt_parity_d1^(^idtte_data_w2[41:0]) ;
 
dff  #(2) stg_partd (
        .din    ({parity_tag,parity_data}),
        .q      ({parity_tag_d1,parity_data_d1}),
        .clk    (clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
//=========================================================================================
//      D-SFAR
//=========================================================================================
 
// dsfar is written into mra for pre SPARC_HPV_EN changes. It will be written into flops
// for SPARC_HPV_EN. 
 
wire    [47:0]           dsfar_din ;
 
assign  dsfar_din[47:0] = dsfar_wdata[47:0] ;
 
wire    dsfar0_clk ;
 
 
 
 
 
 
 
 
 
 
 
 
 
// Thread0
 
dffe  #(48) dsfar0_ff (
        .din    (dsfar_din[47:0]),
        .q      (dsfar0[47:0]),
        .en (~(dmmu_sfar_wr_en_l[0])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
wire    dsfar1_clk ;
 
 
 
 
 
 
 
 
 
 
 
 
 
// Thread1
 
dffe  #(48) dsfar1_ff (
        .din    (dsfar_din[47:0]),
        .q      (dsfar1[47:0]),
        .en (~(dmmu_sfar_wr_en_l[1])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
wire    dsfar2_clk ;
 
 
 
 
 
 
 
 
 
 
 
 
 
// Thread2
 
dffe  #(48) dsfar2_ff (
        .din    (dsfar_din[47:0]),
        .q      (dsfar2[47:0]),
        .en (~(dmmu_sfar_wr_en_l[2])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
wire    dsfar3_clk ;
 
 
 
 
 
 
 
 
 
 
 
 
 
// Thread3
 
dffe  #(48) dsfar3_ff (
        .din    (dsfar_din[47:0]),
        .q      (dsfar3[47:0]),
        .en (~(dmmu_sfar_wr_en_l[3])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
mux4ds #(48) dsfar_mx(
        .in0(dsfar0[47:0]),
        .in1(dsfar1[47:0]),
        .in2(dsfar2[47:0]),
        .in3(dsfar3[47:0]),
        .sel0 (tlu_slxa_thrd_sel[0]),
        .sel1 (tlu_slxa_thrd_sel[1]),
        .sel2 (tlu_slxa_thrd_sel[2]),
        .sel3 (tlu_slxa_thrd_sel[3]),
        .dout(dsfar[47:0])
);
 
 
//=========================================================================================
//      D-SFSR
//=========================================================================================
 
 
dp_mux2es #(24) dsfsr_wdsel(
                .in0    (tlu_dsfsr_din_g[23:0]),
                .in1    ({lsu_tlu_st_rs3_data_b47t0_g[23:16],   // stxa
                         2'b00,lsu_tlu_st_rs3_data_b47t0_g[13:0]}),
                // .in1 (lsu_tlu_st_rs3_data_b47t0_g[23:0]),    // Bug 4283
                .sel    (dmmu_any_sfsr_wr),
                .dout   (dsfsr_din[23:0])
        );
 
wire    dsfsr0_clk ;
 
 
 
 
 
 
 
 
 
 
 
 
 
// Thread0
 
dffe  #(23) dsfsr0_ff (
        .din    (dsfsr_din[23:1]),
        .q      (dsfsr0[23:1]),
        .en (~(dmmu_sfsr_wr_en_l[0])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
dffrle  #(1) dsfsr0vld_ff (
        .din    (dsfsr_din[0]),
        .q      (dsfsr0[0]),
        .rst_l  (rst_l),
        .en (~(dmmu_sfsr_wr_en_l[0])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
assign  tlu_dsfsr_flt_vld[0] = dsfsr0[0] ;
 
wire    dsfsr1_clk ;
 
 
 
 
 
 
 
 
 
 
 
 
 
// Thread1
 
dffe  #(23) dsfsr1_ff (
        .din    (dsfsr_din[23:1]),
        .q      (dsfsr1[23:1]),
        .en (~(dmmu_sfsr_wr_en_l[1])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
dffrle  #(1) dsfsr1vld_ff (
        .din    (dsfsr_din[0]),
        .q      (dsfsr1[0]),
        .rst_l  (rst_l),
        .en (~(dmmu_sfsr_wr_en_l[1])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
assign  tlu_dsfsr_flt_vld[1] = dsfsr1[0] ;
 
wire    dsfsr2_clk ;
 
 
 
 
 
 
 
 
 
 
 
 
 
// Thread2
 
dffe  #(23) dsfsr2_ff (
        .din    (dsfsr_din[23:1]),
        .q      (dsfsr2[23:1]),
        .en (~(dmmu_sfsr_wr_en_l[2])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
dffrle  #(1) dsfsr2vld_ff (
        .din    (dsfsr_din[0]),
        .q      (dsfsr2[0]),
        .rst_l  (rst_l),
        .en (~(dmmu_sfsr_wr_en_l[2])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
assign  tlu_dsfsr_flt_vld[2] = dsfsr2[0] ;
 
wire    dsfsr3_clk ;
 
 
 
 
 
 
 
 
 
 
 
 
 
// Thread3
 
dffe  #(23) dsfsr3_ff (
        .din    (dsfsr_din[23:1]),
        .q      (dsfsr3[23:1]),
        .en (~(dmmu_sfsr_wr_en_l[3])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
dffrle  #(1) dsfsr3vld_ff (
        .din    (dsfsr_din[0]),
        .q      (dsfsr3[0]),
        .rst_l  (rst_l),
        .en (~(dmmu_sfsr_wr_en_l[3])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
assign  tlu_dsfsr_flt_vld[3] = dsfsr3[0] ;
 
dp_mux4ds #(24) dsfsr_msel(
                .in0    (dsfsr0[23:0]),
                .in1    (dsfsr1[23:0]),
                .in2    (dsfsr2[23:0]),
                .in3    (dsfsr3[23:0]),
                .sel0_l (~tlu_slxa_thrd_sel[0]),
                .sel1_l (~tlu_slxa_thrd_sel[1]),
                .sel2_l (~tlu_slxa_thrd_sel[2]),
                .sel3_l (~tlu_slxa_thrd_sel[3]),
                .dout   (dsfsr[23:0])
        );
 
//=========================================================================================
//      I-SFSR
//=========================================================================================
 
// Should be able to reduce the width of these regs !!!
 
 
dp_mux2es #(24) isfsr_wdsel(
                .in0    (tlu_isfsr_din_g[23:0]),
                .in1    ({lsu_tlu_st_rs3_data_b47t0_g[23:16],   // stxa
                         2'b00,lsu_tlu_st_rs3_data_b47t0_g[13:0]}),
                //.in1  (lsu_tlu_st_rs3_data_b47t0_g[23:0]),    // Bug 4283
                .sel    (immu_any_sfsr_wr),
                .dout   (isfsr_din[23:0])
        );
 
wire    isfsr0_clk ;
 
 
 
 
 
 
 
 
 
 
 
 
 
// Thread0
 
dffe  #(23) isfsr0_ff (
        .din    (isfsr_din[23:1]),
        .q      (isfsr0[23:1]),
        .en (~(immu_sfsr_wr_en_l[0])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
// Chandra - This has changed.
 
dffrle  #(1) isfsrvld0_ff (
        .din    (isfsr_din[0]),
        .q      (isfsr0[0]),
        .rst_l  (rst_l),      .en (~(immu_sfsr_wr_en_l[0])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
assign  tlu_isfsr_flt_vld[0] = isfsr0[0] ;
 
wire    isfsr1_clk ;
 
 
 
 
 
 
 
 
 
 
 
 
 
// Thread1
 
dffe  #(23) isfsr1_ff (
        .din    (isfsr_din[23:1]),
        .q      (isfsr1[23:1]),
        .en (~(immu_sfsr_wr_en_l[1])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
// Chandra - This has changed.
 
dffrle  #(1) isfsrvld1_ff (
        .din    (isfsr_din[0]),
        .q      (isfsr1[0]),
        .rst_l  (rst_l),                .en (~(immu_sfsr_wr_en_l[1])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
assign  tlu_isfsr_flt_vld[1] = isfsr1[0] ;
 
wire    isfsr2_clk ;
 
 
 
 
 
 
 
 
 
 
 
 
 
// Thread2
 
dffe  #(23) isfsr2_ff (
        .din    (isfsr_din[23:1]),
        .q      (isfsr2[23:1]),
        .en (~(immu_sfsr_wr_en_l[2])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
// Chandra - This has changed.
 
dffrle  #(1) isfsrvld2_ff (
        .din    (isfsr_din[0]),
        .q      (isfsr2[0]),
        .rst_l  (rst_l),        .en (~(immu_sfsr_wr_en_l[2])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
assign  tlu_isfsr_flt_vld[2] = isfsr2[0] ;
 
wire    isfsr3_clk ;
 
 
 
 
 
 
 
 
 
 
 
 
 
// Thread3
 
dffe  #(23) isfsr3_ff (
        .din    (isfsr_din[23:1]),
        .q      (isfsr3[23:1]),
        .en (~(immu_sfsr_wr_en_l[3])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
// Chandra - This has changed.
 
dffrle  #(1) isfsrvld3_ff (
        .din    (isfsr_din[0]),
        .q      (isfsr3[0]),
        .rst_l  (rst_l),        .en (~(immu_sfsr_wr_en_l[3])), .clk(clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
assign  tlu_isfsr_flt_vld[3] = isfsr3[0] ;
 
dp_mux4ds #(24) isfsr_msel(
                .in0    (isfsr0[23:0]),
                .in1    (isfsr1[23:0]),
                .in2    (isfsr2[23:0]),
                .in3    (isfsr3[23:0]),
                .sel0_l (~tlu_slxa_thrd_sel[0]),
                .sel1_l (~tlu_slxa_thrd_sel[1]),
                .sel2_l (~tlu_slxa_thrd_sel[2]),
                .sel3_l (~tlu_slxa_thrd_sel[3]),
                .dout   (isfsr[23:0])
        );
 
//=========================================================================================
//      D-SFAR
//=========================================================================================
/*
`ifdef SPARC_HPV_EN
`else
assign  dsfar[47:0] = mra_rdata[`MRA_DSFAR_HI:`MRA_DSFAR_LO];
`endif
*/
 
//=========================================================================================
//      Muxing for ldxa read
//=========================================================================================
 
// Note - collapse dtsb/itsb into one leg of the mux. Similar for
// dtag_access/itag_access.
// read of zcps1_itsb,zcps1_dtsb collapsed into read of dtsb.
// read of nzcps0_dtsb,nzcps0_itsb collapsed into read of dtag_access.
// read of nzcps1_dtsb,nzcps1_itsb collapsed into read of dsfar.
 
// use rs3 to return data.
 
//*****************************************************************
//      SPARC_HPV_EN 
//*****************************************************************
 
// Warning for Grape Mapper : Be careful about loading on replicated
// msb.
 
// First Level, Mux 1
// This is done in Estage to save on flops.
// !!! The sels except b0 are also Estage !!! b0 is delayed by a cycle.
mux3ds #(48) ldxa_l1mx1_e(
                .in0(tsb_ps0[47:0]), // becomes ps0 tsb with SPARC_HPV_EN
                .in1(tsb_ps1[47:0]), // becomes ps1 tsb with SPARC_HPV_EN
                .in2(tag_access_w2[47:0]),
                .sel0(tlu_ldxa_l1mx1_sel[1]),
                .sel1(tlu_ldxa_l1mx1_sel[2]),
                .sel2(tlu_ldxa_l1mx1_sel[3]),
                .dout(ldxa_l1mx1_dout_e[47:0])
);
 
// New
dff  #(48) l1mx1_ff (
        .din    (ldxa_l1mx1_dout_e[47:0]),
        .q      (ldxa_l1mx1_dout_m[47:0]),
        .clk    (clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
wire [63:0] ldxa_l1mx1_dout_final ;
 
// New
assign  ldxa_l1mx1_dout_final[63:0] =
                // Note : this bit of the mx sel is stage delayed relative to the others.
                tlu_ldxa_l1mx1_sel[0] ?
                tag_target[63:0] : // tag_target.
                {{16{ldxa_l1mx1_dout_m[47]}},ldxa_l1mx1_dout_m[47:0]} ; // tsb_ps0/ps1,tag_access
 
/*mux4ds #(64) ldxa_l1mx1(
                .in0(tag_target[63:0]),
                .in1({{16{tsb_ps0[47]}},tsb_ps0[47:0]}), // becomes ps0 tsb with SPARC_HPV_EN
                .in2({{16{tsb_ps1[47]}},tsb_ps1[47:0]}), // becomes ps1 tsb with SPARC_HPV_EN
                .in3({{16{tag_access_w2[47]}},tag_access_w2[47:0]}),
                .sel0(tlu_ldxa_l1mx1_sel[0]),
                .sel1(tlu_ldxa_l1mx1_sel[1]),
                .sel2(tlu_ldxa_l1mx1_sel[2]),
                .sel3(tlu_ldxa_l1mx1_sel[3]),
                .dout(ldxa_l1mx1_dout[63:0])
);*/
 
wire    [47:0]   ldxa_l1mx2_dout ;
// First Level, Mux 2 - This is done in M stage.
mux4ds #(48) ldxa_l1mx2(
                .in0({24'd0,dsfsr[23:0]}),
                .in1(dsfar[47:0]),
                .in2({24'd0,isfsr[23:0]}),
                .in3({37'd0,ptr_ctxt_cfg[5:3],5'd0,ptr_ctxt_cfg[2:0]}),
                .sel0(tlu_ldxa_l1mx2_sel[0]),
                .sel1(tlu_ldxa_l1mx2_sel[1]),
                .sel2(tlu_ldxa_l1mx2_sel[2]),
                .sel3(tlu_ldxa_l1mx2_sel[3]),
                .dout(ldxa_l1mx2_dout[47:0])
);
 
wire    [63:0]   tlu_ldxa_data_m ;
mux3ds #(64)    ldxa_fmx (
                .in0    (ldxa_l1mx1_dout_final[63:0]),
                //.in0  (ldxa_l1mx1_dout[63:0]),
                .in1    ({{16{ldxa_l1mx2_dout[47]}},ldxa_l1mx2_dout[47:0]}),
                .in2    ({{16{tlu_idtsb_8k_ptr[47]}},tlu_idtsb_8k_ptr[47:0]}),
                .sel0   (tlu_ldxa_l2mx1_sel[0]),
                .sel1   (tlu_ldxa_l2mx1_sel[1]),
                .sel2   (tlu_ldxa_l2mx1_sel[2]),
                .dout   (tlu_ldxa_data_m[63:0])
                //.dout (tlu_ldxa_data_e[63:0])
        );
 
dff  #(64) stgg_eldxa (
        .din    (tlu_ldxa_data_m[63:0]),
        .q      (lsu_exu_ldxa_data_g[63:0]),
        .clk    (clk),
        .se     (1'b0),       .si (),          .so ()
        );
 
endmodule
 
 
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Line No.	Rev	Author	Line
1	95	fafa1971	`// ========== Copyright Header Begin ==========================================`
2			`//`
3			`// OpenSPARC T1 Processor File: tlu_mmu_dp.v`
4			`// Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.`
5			`// DO NOT ALTER OR REMOVE COPYRIGHT NOTICES.`
6			`//`
7			`// The above named program is free software; you can redistribute it and/or`
8			`// modify it under the terms of the GNU General Public`
9			`// License version 2 as published by the Free Software Foundation.`
10			`//`
11			`// The above named program is distributed in the hope that it will be`
12			`// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of`
13			`// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU`
14			`// General Public License for more details.`
15			`//`
16			`// You should have received a copy of the GNU General Public`
17			`// License along with this work; if not, write to the Free Software`
18			`// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.`
19			`//`
20			`// ========== Copyright Header End ============================================`
21			`///////////////////////////////////////////////////////////////////////`
22			`/*`
23			`// Description: MMU Datapath - I & D.`
24			`*/`
25			`////////////////////////////////////////////////////////////////////////`
26			`// Global header file includes`
27			`////////////////////////////////////////////////////////////////////////`
28			`// system level definition file which contains the /*`
29			`/* ========== Copyright Header Begin ==========================================`
30			`*`
31			`* OpenSPARC T1 Processor File: sys.h`
32			`* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.`
33			`* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES.`
34			`*`
35			`* The above named program is free software; you can redistribute it and/or`
36			`* modify it under the terms of the GNU General Public`
37			`* License version 2 as published by the Free Software Foundation.`
38			`*`
39			`* The above named program is distributed in the hope that it will be`
40			`* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of`