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// ========== Copyright Header Begin ==========================================

// 

// OpenSPARC T1 Processor File: bw_r_dcm.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 ============================================

////////////////////////////////////////////////////////////////////////

// Local header file includes / local defines

////////////////////////////////////////////////////////////////////////

// The Four panels correspond to addr<10:9> decoded.

module bw_r_dcm(  /*AUTOARG*/

   // Outputs

   row_hit, rd_data0, rd_data1, rd_data2, rd_data3, so_0, so_1,

   // Inputs

   cam_en, inv_mask0, inv_mask1, inv_mask2, inv_mask3, si_0, se_0,

   si_1, se_1, sehold_0, sehold_1, rclk,  rd_en, rw_addr0,

   rw_addr1, rw_addr2, rw_addr3, rst_l_0, rst_l_1, rst_warm_0,

   rst_warm_1, wr_en, rst_tri_en_0, rst_tri_en_1, wr_data0, wr_data1,

   wr_data2, wr_data3

   );

output  [31:0]   row_hit;

output [31:0]         rd_data0;               // From panel0 of dcm_panel.v

output [31:0]         rd_data1;               // From panel1 of dcm_panel.v

output [31:0]         rd_data2;               // From panel2 of dcm_panel.v

output [31:0]         rd_data3;               // From panel3 of dcm_panel.v

input   [3:0]         cam_en;

input [7:0]           inv_mask0;              // To panel0 of dcm_panel.v

input [7:0]           inv_mask1;              // To panel1 of dcm_panel.v

input [7:0]           inv_mask2;              // To panel2 of dcm_panel.v

input [7:0]           inv_mask3;              // To panel3 of dcm_panel.v

input                 si_0, se_0;

output                so_0;

input                 si_1, se_1;

output                so_1;

input                 sehold_0;

input                 sehold_1;

input                 rclk;                   // To panel0 of dcm_panel.v, ...

input  [3:0]          rd_en ;           // To panel0 of dcm_panel.v

input [5:0]           rw_addr0;      // To panel0 of dcm_panel.v

input [5:0]           rw_addr1;      // To panel1 of dcm_panel.v

input [5:0]           rw_addr2;      // To panel2 of dcm_panel.v

input [5:0]           rw_addr3;      // To panel3 of dcm_panel.v

input                 rst_l_0;                  // To panel0 of dcm_panel.v, ...

input                 rst_l_1;                  // To panel0 of dcm_panel.v, ...

input                 rst_warm_0;

input                 rst_warm_1;

input   [3:0]         wr_en;            // To panel0 of dcm_panel.v

input                 rst_tri_en_0; // used to disable writes during SCAN.

input                 rst_tri_en_1; // used to disable writes during SCAN.

input [32:0]          wr_data0;         // To panel0 of dcm_panel.v

input [32:0]          wr_data1;         // To panel1 of dcm_panel.v

input [32:0]          wr_data2;         // To panel2 of dcm_panel.v

input [32:0]          wr_data3;         // To panel3 of dcm_panel.v

wire    [31:0]   bank1_hit;

wire    [31:0]   bank0_hit;

/*      dcm_panel_pair  AUTO_TEMPLATE (

                                  .bank_hit(bank0_hit[31:0]),

                                  .rd_data0(rd_data0[31:0]),

                                  .rd_data1(rd_data1[31:0]),

                                  // Inputs

                                  .cam_en(cam_en[1:0]),

                                  .inv_mask0(inv_mask0[7:0]),

                                  .inv_mask1(inv_mask1[7:0]),

                                  .rclk (rclk),

                                  .rd_en(rd_en[1:0]),

                                  .rst_l(rst_l_0),

                                  .rst_tri_en(rst_tri_en_0),

                                  .rst_warm(rst_warm_0),

                                  .rw_addr0(rw_addr0[5:0]),

                                  .rw_addr1(rw_addr1[5:0]),

                                  .sehold(sehold_0),

                                  .wr_data0(wr_data0[32:0]),

                                  .wr_data1(wr_data1[32:0]),

                                  .wr_en(wr_en[1:0]));

*/

      dcm_panel_pair    panel_pair0(

                                  .so   (),

                                  .si   (),

                                  .se   (se_0),

                                        /*AUTOINST*/

                                  // Outputs

                                  .bank_hit(bank0_hit[31:0]),    // Templated

                                  .rd_data0(rd_data0[31:0]),     // Templated

                                  .rd_data1(rd_data1[31:0]),     // Templated

                                  // Inputs

                                  .cam_en(cam_en[1:0]),          // Templated

                                  .inv_mask0(inv_mask0[7:0]),    // Templated

                                  .inv_mask1(inv_mask1[7:0]),    // Templated

                                  .rclk (rclk),                  // Templated

                                  .rd_en(rd_en[1:0]),            // Templated

                                  .rst_l(rst_l_0),               // Templated

                                  .rst_tri_en(rst_tri_en_0),     // Templated

                                  .rst_warm(rst_warm_0),         // Templated

                                  .rw_addr0(rw_addr0[5:0]),      // Templated

                                  .rw_addr1(rw_addr1[5:0]),      // Templated

                                  .sehold(sehold_0),             // Templated

                                  .wr_data0(wr_data0[32:0]),     // Templated

                                  .wr_data1(wr_data1[32:0]),     // Templated

                                  .wr_en(wr_en[1:0]));            // Templated

        assign   row_hit =  bank1_hit | bank0_hit ;

/*      dcm_panel_pair  AUTO_TEMPLATE (

                                  .bank_hit(bank1_hit[31:0]),

                                  .rd_data0(rd_data2[31:0]),

                                  .rd_data1(rd_data3[31:0]),

                                  // Inputs

                                  .cam_en(cam_en[3:2]),

                                  .inv_mask0(inv_mask2[7:0]),

                                  .inv_mask1(inv_mask3[7:0]),

                                  .rclk (rclk),

                                  .rd_en(rd_en[3:2]),

                                  .rst_l(rst_l_1),

                                  .rst_tri_en(rst_tri_en_1),

                                  .rst_warm(rst_warm_1),

                                  .rw_addr0(rw_addr2[5:0]),

                                  .rw_addr1(rw_addr3[5:0]),

                                  .sehold(sehold_1),

                                  .wr_data0(wr_data2[32:0]),

                                  .wr_data1(wr_data3[32:0]),

                                  .wr_en(wr_en[3:2]));

*/

      dcm_panel_pair    panel_pair1(

                                  .so   (),

                                  .si   (),

                                  .se   (se_1),

                                        /*AUTOINST*/

                                    // Outputs

                                    .bank_hit(bank1_hit[31:0]),  // Templated

                                    .rd_data0(rd_data2[31:0]),   // Templated

                                    .rd_data1(rd_data3[31:0]),   // Templated

                                    // Inputs

                                    .cam_en(cam_en[3:2]),        // Templated

                                    .inv_mask0(inv_mask2[7:0]),  // Templated

                                    .inv_mask1(inv_mask3[7:0]),  // Templated

                                    .rclk(rclk),                 // Templated

                                    .rd_en(rd_en[3:2]),          // Templated

                                    .rst_l(rst_l_1),             // Templated

                                    .rst_tri_en(rst_tri_en_1),   // Templated

                                    .rst_warm(rst_warm_1),       // Templated

                                    .rw_addr0(rw_addr2[5:0]),    // Templated

                                    .rw_addr1(rw_addr3[5:0]),    // Templated

                                    .sehold(sehold_1),           // Templated

                                    .wr_data0(wr_data2[32:0]),   // Templated

                                    .wr_data1(wr_data3[32:0]),   // Templated

                                    .wr_en(wr_en[3:2]));          // Templated

endmodule

module dcm_panel_pair(  /*AUTOARG*/

   // Outputs

   so, bank_hit, rd_data0, rd_data1,

   // Inputs

   cam_en, inv_mask0, inv_mask1, rclk, rd_en, rst_l, rst_tri_en,

   rst_warm, rw_addr0, rw_addr1, sehold, wr_data0, wr_data1, wr_en,

   si, se

   );

input [1:0]             cam_en;

input [7:0]             inv_mask0;

input [7:0]             inv_mask1;

input                   rclk;

input [1:0]             rd_en;

input                   rst_l;

input                   rst_tri_en;

input                   rst_warm;

input [5:0]             rw_addr0;

input [5:0]             rw_addr1;

input                   sehold;

input [32:0]            wr_data0;

input [32:0]            wr_data1;

input [1:0]             wr_en;

input                   si,se ;

output                  so;

output [31:0]           bank_hit;

output [31:0]           rd_data0;

output [31:0]           rd_data1;

wire    [31:0]   lkup_hit0, lkup_hit1;

reg     rst_warm_d;

always  @(posedge rclk)

begin

        rst_warm_d <= ( sehold)? rst_warm_d : rst_warm;

end

/*      dcm_panel       AUTO_TEMPLATE (

                   .lkup_hit            (lkup_hit@[31:0]),

                   .rd_data            (rd_data@[31:0]),

                   .rd_en          (rd_en[@]),

                   .wr_en          (wr_en[@]),

                   .cam_en              (cam_en[@]),

                   .wr_data             (wr_data@[32:0]),

                   .rw_addr             (rw_addr@[5:0]),

                   .rst_l               (rst_l),

                   .rst_warm               (rst_warm_d),

                   .rst_tri_en               (rst_tri_en),

                   .sehold               (sehold),

                   .inv_mask            (inv_mask@[7:0]));

*/

        dcm_panel       panel0(.si(),

                               .so(),

                               .se(se),

                                /*AUTOINST*/

                               // Outputs

                               .lkup_hit(lkup_hit0[31:0]),       // Templated

                               .rd_data (rd_data0[31:0]),        // Templated

                               // Inputs

                               .rd_en   (rd_en[0]),              // Templated

                               .wr_en   (wr_en[0]),              // Templated

                               .cam_en  (cam_en[0]),             // Templated

                               .wr_data (wr_data0[32:0]),        // Templated

                               .rw_addr (rw_addr0[5:0]),         // Templated

                               .inv_mask(inv_mask0[7:0]),        // Templated

                               .rst_l   (rst_l),                 // Templated

                               .rclk    (rclk),

                               .rst_warm(rst_warm_d),            // Templated

                               .rst_tri_en(rst_tri_en),          // Templated

                               .sehold  (sehold));                // Templated

        assign   bank_hit      =    lkup_hit0 | lkup_hit1 ;

        dcm_panel       panel1(.si(),

                               .so(),

                               .se(se),

                                /*AUTOINST*/

                               // Outputs

                               .lkup_hit(lkup_hit1[31:0]),       // Templated

                               .rd_data (rd_data1[31:0]),        // Templated

                               // Inputs

                               .rd_en   (rd_en[1]),              // Templated

                               .wr_en   (wr_en[1]),              // Templated

                               .cam_en  (cam_en[1]),             // Templated

                               .wr_data (wr_data1[32:0]),        // Templated

                               .rw_addr (rw_addr1[5:0]),         // Templated

                               .inv_mask(inv_mask1[7:0]),        // Templated

                               .rst_l   (rst_l),                 // Templated

                               .rclk    (rclk),

                               .rst_warm(rst_warm_d),            // Templated

                               .rst_tri_en(rst_tri_en),          // Templated

                               .sehold  (sehold));                // Templated

endmodule

////////////////////////////////////////////////////////////////////////

// Local header file includes / local defines

// A directory panel is 32 bits wide and 64 entries deep.

// The lkup_hit combines the match lines for an even and odd entry pair

// and hence is only 32 bits wide.

////////////////////////////////////////////////////////////////////////

module dcm_panel(  /*AUTOARG*/

   // Outputs

   lkup_hit, rd_data, so,

   // Inputs

   rd_en, wr_en, cam_en, wr_data, rw_addr, inv_mask, rst_l, rclk,

   rst_warm, si, se, rst_tri_en, sehold

   );

// Read inputs

input           rd_en;

input           wr_en;

input           cam_en;

input   [32:0]   wr_data; // { addr<39:10>, addr<8>, parity, valid  }

// shared inputs 

input   [5:0]    rw_addr; // even entries will have wr_data<0> == 0

input   [7:0]    inv_mask;

output  [31:0]   lkup_hit;

output  [31:0]   rd_data; // { addr<39:10>, parity, valid } 

input           rst_l;

input           rclk;

input           rst_warm;

input           si, se;

output          so;

input           rst_tri_en;

input           sehold;

reg     [29:0]   addr_array[63:0] ;

reg     [63:0]   valid   ;

reg     [63:0]   parity  ;

reg     [29:0]   temp_addr0 ;

reg     [29:0]   temp_addr1 ;

reg     [31:0]   rd_data;

reg     [31:0]   lkup_hit;

reg     [63:0]   cam_hit;

reg     [63:0]   reset_valid;

reg     [63:0]   valid_bit;

reg             rd_en_d, wr_en_d;

reg             cam_en_d ;

reg     [7:0]   inval_mask_d;

reg     [5:0]   rw_addr_d;

//reg   wr_en_off_d1;

reg     rst_tri_en_d1;

wire    [7:0]    inval_mask;

integer i,j;

always  @(posedge rclk)

begin

        rd_en_d <= (sehold)? rd_en_d: rd_en ;

        wr_en_d <= (sehold)? wr_en_d: wr_en;

        rw_addr_d <= (sehold)? rw_addr_d : rw_addr  ;

        cam_en_d <= ( sehold)? cam_en_d: cam_en ;

        inval_mask_d <= ( sehold)? inval_mask_d : inv_mask ;

        rst_tri_en_d1 <= rst_tri_en ; // this is a dummy flop only used as a trigger

end

//--------\/-------------

// VALID flop logic

//--------\/-------------

always  @(posedge rclk) begin

                valid_bit <= valid;

end

reg     cam_out;

// CAM OPERATION and reset_valid generation

// the following always block ensures that lkup_hit will be 

// a ph1 signal.

always  @( /*AUTOSENSE*/ /*memory or*/ cam_en_d or inval_mask_d or rst_tri_en or

           rst_tri_en_d1 or valid_bit or wr_data or rst_warm or rst_l)

 begin

                cam_out = cam_en_d & ~(rst_tri_en | rst_tri_en_d1)  ;

                cam_hit[0] = ( wr_data[32:3] == addr_array[0] )  &

                                 cam_out &   ~wr_data[2] & valid_bit[0]  ;

                reset_valid[0] = (cam_hit[0] & inval_mask_d[0]) ;

                cam_hit[1] = ( wr_data[32:3] == addr_array[1] )  &

                                  cam_out &  wr_data[2]  & valid_bit[1];

                reset_valid[1] = (cam_hit[1] & inval_mask_d[0]) ;

                lkup_hit[0] = ( cam_hit[0]  |  cam_hit[1] ) ;

                cam_hit[2] = ( wr_data[32:3] == addr_array[2] )  &

                                   cam_out & ~wr_data[2] & valid_bit[2]  ;

                reset_valid[2] = (cam_hit[2] & inval_mask_d[0]) ;

                cam_hit[3] = ( wr_data[32:3] == addr_array[3] )  &

                                   cam_out & wr_data[2]  & valid_bit[3];

                reset_valid[3] = (cam_hit[3] & inval_mask_d[0]) ;

                lkup_hit[1] = ( cam_hit[2]  |  cam_hit[3] );

                cam_hit[4] = ( wr_data[32:3] == addr_array[4] )  &

                                   cam_out & ~wr_data[2] & valid_bit[4]  ;

                reset_valid[4] = (cam_hit[4] & inval_mask_d[0]) ;

                cam_hit[5] = ( wr_data[32:3] == addr_array[5] )  &

                                   cam_out & wr_data[2]  & valid_bit[5];

                reset_valid[5] = (cam_hit[5] & inval_mask_d[0]) ;

                lkup_hit[2] = ( cam_hit[4]  |  cam_hit[5] );

                cam_hit[6] = ( wr_data[32:3] == addr_array[6] )  &

                                   cam_out & ~wr_data[2] & valid_bit[6]  ;

                reset_valid[6] = (cam_hit[6] & inval_mask_d[0]) ;

                cam_hit[7] = ( wr_data[32:3] == addr_array[7] )  &

                                   cam_out & wr_data[2]  & valid_bit[7];

                reset_valid[7] = (cam_hit[7] & inval_mask_d[0]) ;

                lkup_hit[3] = ( cam_hit[6]  |  cam_hit[7] );

                cam_hit[8] = ( wr_data[32:3] == addr_array[8] )  &

                                   cam_out & ~wr_data[2] & valid_bit[8]  ;

                reset_valid[8] = (cam_hit[8] & inval_mask_d[1]) ;

                cam_hit[9] = ( wr_data[32:3] == addr_array[9] )  &

                                   cam_out & wr_data[2]  & valid_bit[9];

                reset_valid[9] = (cam_hit[9] & inval_mask_d[1]) ;

                lkup_hit[4] = ( cam_hit[8]  |  cam_hit[9] );

                cam_hit[10] = ( wr_data[32:3] == addr_array[10] )  &

                                   cam_out & ~wr_data[2] & valid_bit[10]  ;

                reset_valid[10] = (cam_hit[10] & inval_mask_d[1]) ;

                cam_hit[11] = ( wr_data[32:3] == addr_array[11] )  &

                                   cam_out & wr_data[2]  & valid_bit[11];

                reset_valid[11] = (cam_hit[11] & inval_mask_d[1]) ;

                lkup_hit[5] = ( cam_hit[10]  |  cam_hit[11] );

                cam_hit[12] = ( wr_data[32:3] == addr_array[12] )  &

                                   cam_out & ~wr_data[2] & valid_bit[12]  ;

                reset_valid[12] = (cam_hit[12] & inval_mask_d[1]) ;

                cam_hit[13] = ( wr_data[32:3] == addr_array[13] )  &

                                   cam_out & wr_data[2]  & valid_bit[13];

                reset_valid[13] = (cam_hit[13] & inval_mask_d[1]) ;

                lkup_hit[6] = ( cam_hit[12]  |  cam_hit[13] );

                cam_hit[14] = ( wr_data[32:3] == addr_array[14] )  &

                                  cam_out &  ~wr_data[2] & valid_bit[14]  ;

                reset_valid[14] = (cam_hit[14] & inval_mask_d[1]) ;

                cam_hit[15] = ( wr_data[32:3] == addr_array[15] )  &

                                  cam_out &  wr_data[2]  & valid_bit[15];

                reset_valid[15] = (cam_hit[15] & inval_mask_d[1]) ;

                lkup_hit[7] = ( cam_hit[14]  |  cam_hit[15] );

                cam_hit[16] = ( wr_data[32:3] == addr_array[16] )  &

                                 cam_out &   ~wr_data[2] & valid_bit[16]  ;

                reset_valid[16] = (cam_hit[16] & inval_mask_d[2]) ;

                cam_hit[17] = ( wr_data[32:3] == addr_array[17] )  &

                                  cam_out &  wr_data[2]  & valid_bit[17];

                reset_valid[17] = (cam_hit[17] & inval_mask_d[2]) ;

                lkup_hit[8] = ( cam_hit[16]  |  cam_hit[17] );

                cam_hit[18] = ( wr_data[32:3] == addr_array[18] )  &

                                  cam_out &  ~wr_data[2] & valid_bit[18]  ;

                reset_valid[18] = (cam_hit[18] & inval_mask_d[2]) ;

                cam_hit[19] = ( wr_data[32:3] == addr_array[19] )  &

                                  cam_out &  wr_data[2]  & valid_bit[19];

                reset_valid[19] = (cam_hit[19] & inval_mask_d[2]) ;

                lkup_hit[9] = ( cam_hit[18]  |  cam_hit[19] );

                cam_hit[20] = ( wr_data[32:3] == addr_array[20] )  &

                                 cam_out &   ~wr_data[2] & valid_bit[20]  ;

                reset_valid[20] = (cam_hit[20] & inval_mask_d[2]) ;

                cam_hit[21] = ( wr_data[32:3] == addr_array[21] )  &

                                 cam_out &   wr_data[2]  & valid_bit[21];

                reset_valid[21] = (cam_hit[21] & inval_mask_d[2]) ;

                lkup_hit[10] = ( cam_hit[20]  |  cam_hit[21] );

                cam_hit[22] = ( wr_data[32:3] == addr_array[22] )  &

                                  cam_out &  ~wr_data[2] & valid_bit[22]  ;

                reset_valid[22] = (cam_hit[22] & inval_mask_d[2]) ;

                cam_hit[23] = ( wr_data[32:3] == addr_array[23] )  &

                                  cam_out &  wr_data[2]  & valid_bit[23];

                reset_valid[23] = (cam_hit[23] & inval_mask_d[2]) ;

                lkup_hit[11] = ( cam_hit[22]  |  cam_hit[23] );

                cam_hit[24] = ( wr_data[32:3] == addr_array[24] )  &

                                cam_out &    ~wr_data[2] & valid_bit[24]  ;

                reset_valid[24] = (cam_hit[24] & inval_mask_d[3]) ;

                cam_hit[25] = ( wr_data[32:3] == addr_array[25] )  &

                                cam_out &    wr_data[2]  & valid_bit[25];

                reset_valid[25] = (cam_hit[25] & inval_mask_d[3]) ;

                lkup_hit[12] = ( cam_hit[24]  |  cam_hit[25] );

                cam_hit[26] = ( wr_data[32:3] == addr_array[26] )  &

                                cam_out &    ~wr_data[2] & valid_bit[26]  ;

                reset_valid[26] = (cam_hit[26] & inval_mask_d[3]) ;

                cam_hit[27] = ( wr_data[32:3] == addr_array[27] )  &

                                cam_out &    wr_data[2]  & valid_bit[27];

                reset_valid[27] = (cam_hit[27] & inval_mask_d[3]) ;

                lkup_hit[13] = ( cam_hit[26]  |  cam_hit[27] );

                cam_hit[28] = ( wr_data[32:3] == addr_array[28] )  &

                                cam_out &    ~wr_data[2] & valid_bit[28]  ;

                reset_valid[28] = (cam_hit[28] & inval_mask_d[3]) ;

                cam_hit[29] = ( wr_data[32:3] == addr_array[29] )  &

                                cam_out &    wr_data[2]  & valid_bit[29];

                reset_valid[29] = (cam_hit[29] & inval_mask_d[3]) ;

                lkup_hit[14] = ( cam_hit[28]  |  cam_hit[29] );

                cam_hit[30] = ( wr_data[32:3] == addr_array[30] )  &

                                 cam_out &   ~wr_data[2] & valid_bit[30]  ;

                reset_valid[30] = (cam_hit[30] & inval_mask_d[3]) ;

                cam_hit[31] = ( wr_data[32:3] == addr_array[31] )  &

                                 cam_out &   wr_data[2]  & valid_bit[31];