Subversion Repositories mpmc8

`timescale 1ns / 1ps

// ============================================================================

//        __

//   \\__/ o\    (C) 2015-2023  Robert Finch, Waterloo

//    \  __ /    All rights reserved.

//     \/_//     robfinch@finitron.ca

//       ||

//

// BSD 3-Clause License

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are met:

//

// 1. Redistributions of source code must retain the above copyright notice, this

//    list of conditions and the following disclaimer.

//

// 2. Redistributions in binary form must reproduce the above copyright notice,

//    this list of conditions and the following disclaimer in the documentation

//    and/or other materials provided with the distribution.

//

// 3. Neither the name of the copyright holder nor the names of its

//    contributors may be used to endorse or promote products derived from

//    this software without specific prior written permission.

//

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE

// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER

// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

//

// 26500 LUTs, 130 BRAM (64kB cache)

// 21400 LUTs no AMO

//

// Read channels always wait until there is valid data in the cache.

// ============================================================================

//

//`define RED_SCREEN    1'b1

`define SUPPORT_AMO     1'b1

//`define SUPPORT_AMO_TETRA     1'b1

//`define SUPPORT_AMO_OCTA 1'b1

//`define SUPPORT_AMO_SHIFT     1'b1

//`define SUPPORT_AMO_MULTI_SHIFT       1'b1

import wishbone_pkg::*;

import mpmc10_pkg::*;

module mpmc10_wb(

input rst,

input clk100MHz,

input mem_ui_rst,

input mem_ui_clk,

input calib_complete,

output reg rstn,

output [31:0] app_waddr,

input app_rdy,

output app_en,

output [2:0] app_cmd,

output [28:0] app_addr,

input app_rd_data_valid,

output [15:0] app_wdf_mask,

output reg [127:0] app_wdf_data,

input app_wdf_rdy,

output app_wdf_wren,

output app_wdf_end,

input [127:0] app_rd_data,

input app_rd_data_end,

input ch0clk, ch1clk, ch2clk, ch3clk, ch4clk, ch5clk, ch6clk, ch7clk,

input wb_cmd_request128_t ch0i,

output wb_cmd_response128_t ch0o,

input wb_cmd_request128_t ch1i,

output wb_cmd_response128_t ch1o,

input wb_cmd_request128_t ch2i,

output wb_cmd_response128_t ch2o,

input wb_cmd_request128_t ch3i,

output wb_cmd_response128_t ch3o,

input wb_cmd_request128_t ch4i,

output wb_cmd_response128_t ch4o,

input wb_cmd_request128_t ch5i,

output wb_cmd_response128_t ch5o,

input wb_cmd_request128_t ch6i,

output wb_cmd_response128_t ch6o,

input wb_cmd_request128_t ch7i,

output wb_cmd_response128_t ch7o,

output mpmc10_state_t state

);

parameter NAR = 2;                      // Number of address reservations

parameter CL = 3'd4;            // Cache read latency

parameter STREAM0 = 1'b1;

parameter STREAM1 = 1'b0;

parameter STREAM2 = 1'b0;

parameter STREAM3 = 1'b0;

parameter STREAM4 = 1'b0;

parameter STREAM5 = 1'b1;

parameter STREAM6 = 1'b0;

parameter STREAM7 = 1'b0;

parameter RMW0 = 1'b0;

parameter RMW1 = 1'b1;

parameter RMW2 = 1'b0;

parameter RMW3 = 1'b0;

parameter RMW4 = 1'b0;

parameter RMW5 = 1'b0;

parameter RMW6 = 1'b0;

parameter RMW7 = 1'b1;

wb_cmd_request128_t ch0is;

wb_cmd_request128_t ch0is2;

wb_cmd_request128_t ch1is;

wb_cmd_request128_t ch1is2;

wb_cmd_request128_t ch2is;

wb_cmd_request128_t ch2is2;

wb_cmd_request128_t ch3is;

wb_cmd_request128_t ch3is2;

wb_cmd_request128_t ch4is;

wb_cmd_request128_t ch4is2;

wb_cmd_request128_t ch5is;

wb_cmd_request128_t ch5is2;

wb_cmd_request128_t ch6is;

wb_cmd_request128_t ch6is2;

wb_cmd_request128_t ch7is;

wb_cmd_request128_t ch7is2;

wb_cmd_response128_t ch0oa, ch0ob, ch0oc;

wb_cmd_response128_t ch1oa, ch1ob, ch1oc;

wb_cmd_response128_t ch2oa, ch2ob, ch2oc;

wb_cmd_response128_t ch3oa, ch3ob, ch3oc;

wb_cmd_response128_t ch4oa, ch4ob, ch4oc;

wb_cmd_response128_t ch5oa, ch5ob, ch5oc;

wb_cmd_response128_t ch6oa, ch6ob, ch6oc;

wb_cmd_response128_t ch7oa, ch7ob, ch7oc;

wire rmw0 = ch0is.cmd[4];

wire rmw1 = ch1is.cmd[4];

wire rmw2 = ch2is.cmd[4];

wire rmw3 = ch3is.cmd[4];

wire rmw4 = ch4is.cmd[4];

wire rmw5 = ch5is.cmd[4];

wire rmw6 = ch6is.cmd[4];

wire rmw7 = ch7is.cmd[4];

assign ch0o = STREAM0 ? ch0ob : rmw0 ? ch0oc : ch0oa;

assign ch1o = STREAM1 ? ch1ob : rmw1 ? ch1oc : ch1oa;

assign ch2o = STREAM2 ? ch2ob : rmw2 ? ch2oc : ch2oa;

assign ch3o = STREAM3 ? ch3ob : rmw3 ? ch3oc : ch3oa;

assign ch4o = STREAM4 ? ch4ob : rmw4 ? ch4oc : ch4oa;

assign ch5o = STREAM5 ? ch5ob : rmw5 ? ch5oc : ch5oa;

assign ch6o = STREAM6 ? ch6ob : rmw6 ? ch6oc : ch6oa;

assign ch7o = STREAM7 ? ch7ob : rmw7 ? ch7oc : ch7oa;

wb_cmd_request128_t req_fifoi;

wb_cmd_request128_t req_fifoo;

wb_cmd_request128_t ld;

wb_cmd_request128_t fifo_mask;

wb_cmd_request128_t fifoo = req_fifoo & fifo_mask;

genvar g;

integer n1,n2,n3;

wire v;

wire full;

wire empty;

wire almost_full;

wire [4:0] cnt;

reg wr_fifo;

mpmc10_state_t prev_state;

wire rd_fifo;   // from state machine

reg [5:0] num_strips;   // from fifo

wire [5:0] req_strip_cnt;

wire [5:0] resp_strip_cnt;

wire [15:0] tocnt;

reg [31:0] adr;

reg [3:0] uch;          // update channel

wire [15:0] wmask;

wire [15:0] mem_wdf_mask2;

reg [127:0] dat128;

wire [127:0] dat256;

wire [3:0] resv_ch [0:NAR-1];

wire [31:0] resv_adr [0:NAR-1];

wire rb1;

reg [7:0] req;

reg [127:0] rd_data_r;

reg rd_data_valid_r;

reg cas_ok;

wire ch0_hit_s, ch1_hit_s, ch2_hit_s, ch3_hit_s;

wire ch4_hit_s, ch5_hit_s, ch6_hit_s, ch7_hit_s;

wire ch0_hit_ne, ch5_hit_ne;

wire hit0, hit1, hit2, hit3, hit4, hit5, hit6, hit7;

always_ff @(posedge mem_ui_clk)

if (app_rd_data_valid)

        rd_data_r <= app_rd_data;

always_ff @(posedge mem_ui_clk)

        rd_data_valid_r <= app_rd_data_valid;

reg [19:0] rst_ctr;

always @(posedge clk100MHz)

if (rst)

        rst_ctr <= 24'd0;

else begin

        if (!rst_ctr[15])

                rst_ctr <= rst_ctr + 2'd1;

        rstn <= rst_ctr[15];

end

reg [7:0] stb [0:7];

always_comb stb[0] = ch0is.stb;

always_comb stb[1] = ch1is.stb;

always_comb stb[2] = ch2is.stb;

always_comb stb[3] = ch3is.stb;

always_comb stb[4] = ch4is.stb;

always_comb stb[5] = ch5is.stb;

always_comb stb[6] = ch6is.stb;

always_comb stb[7] = ch7is.stb;

reg [2:0] chcnt [0:7];

always_ff @(posedge mem_ui_clk)

if (rst) begin

        for (n2 = 0; n2 < 8; n2 = n2 + 1)

                chcnt[n2] <= 'd0;

end

else begin

        for (n2 = 0; n2 < 8; n2 = n2 + 1)

                if (stb[n2]) begin

                        if (chcnt[n2] < CL)

                                chcnt[n2] <= chcnt[n2] + 2'd1;

                end

                else

                        chcnt[n2] <= 'd0;

end

wire [7:0] pe_req;

reg [7:0] chack;

always_comb chack[0] = ch0o.ack;

always_comb chack[1] = ch1o.ack;

always_comb chack[2] = ch2o.ack;

always_comb chack[3] = ch3o.ack;

always_comb chack[4] = ch4o.ack;

always_comb chack[5] = ch5o.ack;

always_comb chack[6] = ch6o.ack;

always_comb chack[7] = ch7o.ack;

reg [7:0] reqa;

always_comb reqa[1] = (!ch1o.ack && ch1is.stb && !ch1is.we && chcnt[1]==CL) || (ch1is.we && ch1is.stb);

always_comb reqa[5] = (!ch5o.ack && ch5is.stb && !ch5is.we && chcnt[5]==CL) || (ch5is.we && ch5is.stb);

wire rste = mem_ui_rst||rst||!calib_complete;

edge_det edch0 (

        .rst(rste),

        .clk(mem_ui_clk),

        .ce(1'b1),

        .i((!ch0o.ack && ch0is.stb && !ch0is.we && chcnt[0]==CL) || (ch0is.we && ch0is.stb)),

        .pe(pe_req[0]),

        .ne(),

        .ee()

);

edge_det edch1 (

        .rst(rste),

        .clk(mem_ui_clk),

        .ce(1'b1),

        .i(reqa[1]),

        .pe(pe_req[1]),

        .ne(),

        .ee()

);

edge_det edch2 (

        .rst(rste),

        .clk(mem_ui_clk),

        .ce(1'b1),

        .i((!ch2o.ack && ch2is.stb && !ch2is.we && chcnt[2]==CL) || (ch2is.we && ch2is.stb)),

        .pe(pe_req[2]),

        .ne(),

        .ee()

);

edge_det edch3 (

        .rst(rste),

        .clk(mem_ui_clk),

        .ce(1'b1),

        .i((!ch3o.ack && ch3is.stb && !ch3is.we && chcnt[3]==CL) || (ch3is.we && ch3is.stb)),

        .pe(pe_req[3]),

        .ne(),

        .ee()

);

edge_det edch4 (

        .rst(rste),

        .clk(mem_ui_clk),

        .ce(1'b1),

        .i((!ch4o.ack && ch4is.stb && !ch4is.we && chcnt[4]==CL) || (ch4is.we && ch4is.stb)),

        .pe(pe_req[4]),

        .ne(),

        .ee()

);

edge_det edch5 (

        .rst(rste),

        .clk(mem_ui_clk),

        .ce(1'b1),

        .i(reqa[5]),

        .pe(pe_req[5]),

        .ne(),

        .ee()

);

edge_det edch6 (

        .rst(rste),

        .clk(mem_ui_clk),

        .ce(1'b1),

        .i((!ch6o.ack && ch6is.stb && !ch6is.we && chcnt[6]==CL) || (ch6is.we && ch6is.stb)),

        .pe(pe_req[6]),

        .ne(),

        .ee()

);

edge_det edch7 (

        .rst(rste),

        .clk(mem_ui_clk),

        .ce(1'b1),

        .i((!ch7o.ack && ch7is.stb && !ch7is.we && chcnt[7]==CL) || (ch7is.we && ch7is.stb)),

        .pe(pe_req[7]),

        .ne(),

        .ee()

);

wire [3:0] req_sel;

always_ff @(posedge mem_ui_clk)

        for (n3 = 0; n3 < 8; n3 = n3 + 1)

                if (pe_req[n3])

                        req[n3] <= 1'b1;

                else if ((req_sel==n3[3:0]) || chack[n3])

                        req[n3] <= 1'b0;

// Register signals onto mem_ui_clk domain

mpmc10_sync128_wb usyn0

(

        .clk(mem_ui_clk),

        .i(ch0i),

        .o(ch0is)

);

mpmc10_sync128_wb usyn1

(

        .clk(mem_ui_clk),

        .i(ch1i),

        .o(ch1is)

);

mpmc10_sync128_wb usyn2

(

        .clk(mem_ui_clk),

        .i(ch2i),

        .o(ch2is)

);

mpmc10_sync128_wb usyn3

(

        .clk(mem_ui_clk),

        .i(ch3i),

        .o(ch3is)

);

mpmc10_sync128_wb usyn4

(

        .clk(mem_ui_clk),

        .i(ch4i),

        .o(ch4is)

);

mpmc10_sync128_wb usyn5

(

        .clk(mem_ui_clk),

        .i(ch5i),

        .o(ch5is)

);

mpmc10_sync128_wb usyn6

(

        .clk(mem_ui_clk),

        .i(ch6i),

        .o(ch6is)

);

mpmc10_sync128_wb usyn7

(

        .clk(mem_ui_clk),

        .i(ch7i),

        .o(ch7is)

);

// Streaming channels have a burst length of 64. Round the address to the burst

// length.

always_comb

begin

        ch0is2 <= ch0is;

        ch0is2.padr <= {ch0is.padr[31:10],10'b0};

end

always_comb

begin

        ch1is2 <= ch1is;

        ch1is2.padr <= {ch1is.padr[31:10],10'b0};

end

always_comb

begin

        ch2is2 <= ch2is;

        ch2is2.padr <= {ch2is.padr[31:10],10'b0};

end

always_comb

begin

        ch3is2 <= ch3is;

        ch3is2.padr <= {ch3is.padr[31:10],10'b0};

end

always_comb

begin

        ch4is2 <= ch4is;

        ch4is2.padr <= {ch4is.padr[31:10],10'b0};

end

always_comb

begin

        ch5is2 <= ch5is;

        ch5is2.padr <= {ch5is.padr[31:10],10'b0};

end

always_comb

begin

        ch6is2 <= ch6is;

        ch6is2.padr <= {ch6is.padr[31:10],10'b0};

end

always_comb

begin

        ch7is2 <= ch7is;

        ch7is2.padr <= {ch7is.padr[31:10],10'b0};

end

always_comb

begin

        ld.bte <= wishbone_pkg::LINEAR;

        ld.cti <= wishbone_pkg::CLASSIC;

        ld.blen <= 'd0;

        ld.cyc <= fifoo.cyc && !fifoo.we && rd_data_valid_r && (uch!=4'd0 && uch!=4'd5 && uch!=4'd15);

        ld.stb <= fifoo.stb && !fifoo.we && rd_data_valid_r && (uch!=4'd0 && uch!=4'd5 && uch!=4'd15);

        ld.we <= 1'b0;

        ld.padr <= {app_waddr[31:4],4'h0};

        ld.data1 <= rd_data_r;

        ld.sel <= {16{1'b1}};           // update all bytes

end

reg ch0wack;

reg ch1wack;

reg ch2wack;

reg ch3wack;

reg ch4wack;

reg ch5wack;

reg ch6wack;

reg ch7wack;

always_ff @(posedge mem_ui_clk)

begin

        if (!ch0i.stb)  ch0wack <= 1'b0;

        if (!ch1i.stb)  ch1wack <= 1'b0;

        if (!ch2i.stb)  ch2wack <= 1'b0;

        if (!ch3i.stb)  ch3wack <= 1'b0;

        if (!ch4i.stb)  ch4wack <= 1'b0;

        if (!ch5i.stb)  ch5wack <= 1'b0;

        if (!ch6i.stb)  ch6wack <= 1'b0;

        if (!ch7i.stb)  ch7wack <= 1'b0;

        if (state==WRITE_DATA3)

                case(uch)

                4'd0:   ch0wack <= 1'b1;

                4'd1: ch1wack <= 1'b1;

                4'd2: ch2wack <= 1'b1;

                4'd3:   ch3wack <= 1'b1;

                4'd4:   ch4wack <= 1'b1;

                4'd5:   ch5wack <= 1'b1;

                4'd6:   ch6wack <= 1'b1;

                4'd7:   ch7wack <= 1'b1;

                default:        ;

                endcase

end

mpmc10_cache_wb ucache1

(

        .rst(mem_ui_rst),

        .wclk(mem_ui_clk),

        .inv(1'b0),

        .wchi(fifoo),

        .wcho(),

        .ld(ld),

        .ch0clk(STREAM0 ? 1'b0 : ch0clk),

        .ch1clk(STREAM1 ? 1'b0 : ch1clk),

        .ch2clk(STREAM2 ? 1'b0 : ch2clk),

        .ch3clk(STREAM3 ? 1'b0 : ch3clk),

        .ch4clk(STREAM4 ? 1'b0 : ch4clk),

        .ch5clk(STREAM5 ? 1'b0 : ch5clk),

        .ch6clk(STREAM6 ? 1'b0 : ch6clk),

        .ch7clk(STREAM7 ? 1'b0 : ch7clk),

        .ch0i(STREAM0 ? 'd0 : ch0is),

        .ch1i(STREAM1 ? 'd0 : ch1is),

        .ch2i(STREAM2 ? 'd0 : ch2is),

        .ch3i(STREAM3 ? 'd0 : ch3is),

        .ch4i(STREAM4 ? 'd0 : ch4is),

        .ch5i(STREAM5 ? 'd0 : ch5is),

        .ch6i(STREAM6 ? 'd0 : ch6is),

        .ch7i(STREAM7 ? 'd0 : ch7is),

        .ch0wack(ch0wack),

        .ch1wack(ch1wack),

        .ch2wack(ch2wack),

        .ch3wack(ch3wack),

        .ch4wack(ch4wack),

        .ch5wack(ch5wack),

        .ch6wack(ch6wack),

        .ch7wack(ch7wack),

        .ch0o(ch0oa),

        .ch1o(ch1oa),

        .ch2o(ch2oa),

        .ch3o(ch3oa),

        .ch4o(ch4oa),

        .ch5o(ch5oa),

        .ch6o(ch6oa),

        .ch7o(ch7oa),

        .ch0hit(hit0),

        .ch1hit(hit1),

        .ch2hit(hit2),

        .ch3hit(hit3),

        .ch4hit(hit4),

        .ch5hit(hit5),

        .ch6hit(hit6),

        .ch7hit(hit7)

);

mpmc10_strm_read_cache ustrm0

(

        .rst(rst),

        .wclk(mem_ui_clk),

        .wr(uch==4'd0 && rd_data_valid_r),

        .wadr({app_waddr[31:4],4'h0}),

        .wdat(rd_data_r),

        .inv(1'b0),

        .rclk(mem_ui_clk),

        .rd(ch0is.stb & ~ch0is.we),

        .radr({ch0is.padr[31:4],4'h0}),

        .rdat(ch0ob.dat),

        .hit(ch0_hit_s)

);

mpmc10_strm_read_cache ustrm1

(

        .rst(rst),

        .wclk(mem_ui_clk),

        .wr(uch==4'd1 && rd_data_valid_r),

        .wadr({app_waddr[31:4],4'h0}),

        .wdat(rd_data_r),

        .inv(1'b0),

        .rclk(mem_ui_clk),

        .rd(ch1is.stb & ~ch1is.we),

        .radr({ch1is.padr[31:4],4'h0}),

        .rdat(ch1ob.dat),

        .hit(ch1_hit_s)

);

mpmc10_strm_read_cache ustrm2

(

        .rst(rst),

        .wclk(mem_ui_clk),

        .wr(uch==4'd2 && rd_data_valid_r),

        .wadr({app_waddr[31:4],4'h0}),

        .wdat(rd_data_r),

        .inv(1'b0),

        .rclk(mem_ui_clk),

        .rd(ch2is.stb & ~ch2is.we),

        .radr({ch2is.padr[31:4],4'h0}),

        .rdat(ch2ob.dat),

        .hit(ch2_hit_s)

);

mpmc10_strm_read_cache ustrm3

(

        .rst(rst),

        .wclk(mem_ui_clk),

        .wr(uch==4'd3 && rd_data_valid_r),

        .wadr({app_waddr[31:4],4'h0}),

        .wdat(rd_data_r),

        .inv(1'b0),

        .rclk(mem_ui_clk),

        .rd(ch3is.stb & ~ch3is.we),

        .radr({ch3is.padr[31:4],4'h0}),

        .rdat(ch3ob.dat),

        .hit(ch3_hit_s)

);

mpmc10_strm_read_cache ustrm4

(

        .rst(rst),

        .wclk(mem_ui_clk),

        .wr(uch==4'd4 && rd_data_valid_r),

        .wadr({app_waddr[31:4],4'h0}),

        .wdat(rd_data_r),

        .inv(1'b0),

        .rclk(mem_ui_clk),

        .rd(ch4is.stb & ~ch4is.we),

        .radr({ch4is.padr[31:4],4'h0}),

        .rdat(ch4ob.dat),

        .hit(ch4_hit_s)

);

mpmc10_strm_read_cache ustrm5

(

        .rst(rst),

        .wclk(mem_ui_clk),

        .wr(uch==4'd5 && rd_data_valid_r),

        .wadr({app_waddr[31:4],4'h0}),

        .wdat(rd_data_r),

        .inv(1'b0),

        .rclk(mem_ui_clk),

        .rd(ch5is.stb & ~ch5is.we),

        .radr({ch5is.padr[31:4],4'h0}),

        .rdat(ch5ob.dat),

        .hit(ch5_hit_s)

);

mpmc10_strm_read_cache ustrm6

(

        .rst(rst),

        .wclk(mem_ui_clk),

        .wr(uch==4'd6 && rd_data_valid_r),

        .wadr({app_waddr[31:4],4'h0}),

        .wdat(rd_data_r),

        .inv(1'b0),

        .rclk(mem_ui_clk),

        .rd(ch6is.stb & ~ch6is.we),

        .radr({ch6is.padr[31:4],4'h0}),

        .rdat(ch6ob.dat),

        .hit(ch6_hit_s)

);

mpmc10_strm_read_cache ustrm7

(

        .rst(rst),

        .wclk(mem_ui_clk),

        .wr(uch==4'd7 && rd_data_valid_r),

        .wadr({app_waddr[31:4],4'h0}),

        .wdat(rd_data_r),

        .inv(1'b0),

        .rclk(mem_ui_clk),

        .rd(ch7is.stb & ~ch7is.we),

        .radr({ch7is.padr[31:4],4'h0}),

        .rdat(ch7ob.dat),

        .hit(ch7_hit_s)

);

always_comb     ch0ob.ack = ch0_hit_s & ch0i.stb;

always_comb     ch1ob.ack = ch1_hit_s & ch1i.stb;

always_comb     ch2ob.ack = ch2_hit_s & ch2i.stb;

always_comb     ch3ob.ack = ch3_hit_s & ch3i.stb;

always_comb     ch4ob.ack = ch4_hit_s & ch4i.stb;

always_comb     ch5ob.ack = ch5_hit_s & ch5i.stb;

always_comb     ch6ob.ack = ch6_hit_s & ch6i.stb;

always_comb     ch7ob.ack = ch7_hit_s & ch7i.stb;

wire [7:0] sel;

wire rd_rst_busy;

wire wr_rst_busy;

wire cd_sel;

change_det #(.WID(8)) ucdsel (.rst(rst), .ce(1'b1), .clk(mem_ui_clk), .i(sel), .cd(cd_sel));

always_comb     //ff @(posedge mem_ui_clk)

        wr_fifo = |sel & ~almost_full & ~wr_rst_busy & cd_sel;

roundRobin rr1

(

        .rst(rst),

        .clk(mem_ui_clk),

        .ce(1'b1),//~|req || chack[req_sel]),

        .req(req),

        .lock(8'h00),

        .sel(sel),

        .sel_enc(req_sel)

);

always_comb

        case(req_sel)

        4'd0:   req_fifoi <= STREAM0 ? ch0is2 : ch0is;

        4'd1:   req_fifoi <= STREAM1 ? ch1is2 : ch1is;

        4'd2:   req_fifoi <= STREAM2 ? ch2is2 : ch2is;

        4'd3:   req_fifoi <= STREAM3 ? ch3is2 : ch3is;

        4'd4:   req_fifoi <= STREAM4 ? ch4is2 : ch4is;

        4'd5:   req_fifoi <= STREAM5 ? ch5is2 : ch5is;

        4'd6:   req_fifoi <= STREAM6 ? ch6is2 : ch6is;

        4'd7:   req_fifoi <= STREAM7 ? ch7is2 : ch7is;

        default:

                begin

                        req_fifoi <= 'd0;

                        req_fifoi.cid <= 4'd15;

                end

        endcase

mpmc10_fifo ufifo1

(

        .rst(rst),

        .clk(mem_ui_clk),

        .rd_fifo(rd_fifo),

        .wr_fifo(wr_fifo),

        .req_fifoi(req_fifoi),

        .req_fifoo(req_fifoo),

        .v(v),

        .full(full),

        .empty(empty),

        .almost_full(almost_full),

        .rd_rst_busy(rd_rst_busy),

        .wr_rst_busy(wr_rst_busy),

        .cnt(cnt)

);

always_comb

        uch <= fifoo.cid;

always_comb

        num_strips <= fifoo.blen;

always_comb

        adr <= fifoo.padr;

wire [2:0] app_addr3;   // dummy to make up 32-bits

mpmc10_addr_gen uag1

(

        .rst(mem_ui_rst),

        .clk(mem_ui_clk),

        .state(state),

        .rdy(app_rdy),

        .num_strips(num_strips),

        .strip_cnt(req_strip_cnt),

        .addr_base(adr),

        .addr({app_addr3,app_addr})

);

mpmc10_waddr_gen uwag1

(

        .rst(mem_ui_rst),

        .clk(mem_ui_clk),

        .state(state),

        .valid(rd_data_valid_r),

        .num_strips(num_strips),

        .strip_cnt(resp_strip_cnt),

        .addr_base(adr),

        .addr(app_waddr)

);

mpmc10_mask_select unsks1

(

        .rst(mem_ui_rst),

        .clk(mem_ui_clk),

        .state(state),

        .we(fifoo.we),

        .wmask(req_fifoo.sel[15:0]),

        .mask(app_wdf_mask),

        .mask2(mem_wdf_mask2)

);

wire [127:0] data128a;

wire [127:0] data128b;

mpmc10_data_select #(.WID(128)) uds1

(

        .clk(mem_ui_clk),

        .state(state),

        .dati1(req_fifoo.data1),

        .dati2(req_fifoo.data2),

        .dato1(data128a),

        .dato2(data128b)

);

reg rmw_hit;

reg rmw_ack;

reg [127:0] opa, opa1, opb, opc, t1;

reg [127:0] rmw_dat;

`ifdef SUPPORT_AMO

always_comb

        case(req_fifoo.cid)

        4'd0:   rmw_hit = hit0;

        4'd1:   rmw_hit = hit1;

        4'd2:   rmw_hit = hit2;

        4'd3:   rmw_hit = hit3;

        4'd4:   rmw_hit = hit4;

        4'd5:   rmw_hit = hit5;

        4'd6:   rmw_hit = hit6;

        4'd7:   rmw_hit = hit7;

        default:        rmw_hit = 1'b1;

        endcase

always_ff @(posedge mem_ui_clk)

        opb <= data128a >> {req_fifoo.padr[4:0],3'b0};

always_ff @(posedge mem_ui_clk)

        opc <= data128b >> {req_fifoo.padr[4:0],3'b0};

always_ff @(posedge mem_ui_clk)

        case(req_fifoo.cid)

        4'd0:   opa1 <= ch0oa.dat;

        4'd1:   opa1 <= ch1oa.dat;

        4'd2:   opa1 <= ch2oa.dat;

        4'd3:   opa1 <= ch3oa.dat;

        4'd4:   opa1 <= ch4oa.dat;

        4'd5:   opa1 <= ch5oa.dat;

        4'd6:   opa1 <= ch6oa.dat;

        4'd7:   opa1 <= ch7oa.dat;

        default:        opa1 <= 'd0;

        endcase

always_ff @(posedge mem_ui_clk)

        opa <= opa1 >> {req_fifoo.padr[4:0],3'b0};

always_ff @(posedge mem_ui_clk)

case(req_fifoo.sz)

`ifdef SUPPORT_AMO_TETRA

wishbone_pkg::tetra:

        case(req_fifoo.cmd)

        CMD_ADD:        t1 <= opa[31:0] + opb[31:0];

        CMD_AND:        t1 <= opa[31:0] & opb[31:0];

        CMD_OR:         t1 <= opa[31:0] | opb[31:0];

        CMD_EOR:        t1 <= opa[31:0] ^ opb[31:0];

`ifdef SUPPORT_AMO_SHIFT

        CMD_ASL:        t1 <= {opa[30:0],1'b0};

        CMD_LSR:        t1 <= {1'b0,opa[31:1]};

        CMD_ROL:        t1 <= {opa[30:0],opa[31]};

        CMD_ROR:        t1 <= {opa[0],opa[31:1]};

`endif

`ifdef SUPPORT_AMO_MULTI_SHIFT

        CMD_ASL:        t1 <= opa[31:0] << opb[4:0];

        CMD_LSR:        t1 <= opa[31:0] >> opb[4:0];

`endif

        CMD_MINU:       t1 <= opa[31:0] < opb[31:0] ? opa[31:0] : opb[31:0];

        CMD_MAXU:       t1 <= opa[31:0] > opb[31:0] ? opa[31:0] : opb[31:0];

        CMD_MIN:        t1 <= $signed(opa[31:0]) < $signed(opb[31:0]) ? opa[31:0] : opb[31:0];

        CMD_MAX:        t1 <= $signed(opa[31:0]) > $signed(opb[31:0]) ? opa[31:0] : opb[31:0];

        CMD_CAS:        t1 <= opa[31:0]==opb[31:0] ? opc[31:0] : opb[31:0];

        default:        t1 <= opa[31:0];

        endcase

`endif

`ifdef SUPPORT_AMO_OCTA

wishbone_pkg::octa:

        case(req_fifoo.cmd)

        CMD_ADD:        t1 <= opa[63:0] + opb[63:0];

        CMD_AND:        t1 <= opa[63:0] & opb[63:0];

        CMD_OR:         t1 <= opa[63:0] | opb[63:0];

        CMD_EOR:        t1 <= opa[63:0] ^ opb[63:0];

`ifdef SUPPORT_AMO_SHIFT

        CMD_ASL:        t1 <= {opa[62:0],1'b0};

        CMD_LSR:        t1 <= {1'b0,opa[63:1]};

        CMD_ROL:        t1 <= {opa[62:0],opa[63]};

        CMD_ROR:        t1 <= {opa[0],opa[63:1]};

`endif

`ifdef SUPPORT_AMO_MULTI_SHIFT

        CMD_ASL:        t1 <= opa[63:0] << opb[5:0];

        CMD_LSR:        t1 <= opa[63:0] >> opb[5:0];

`endif

        CMD_MINU:       t1 <= opa[63:0] < opb[63:0] ? opa[63:0] : opb[63:0];

        CMD_MAXU:       t1 <= opa[63:0] > opb[63:0] ? opa[63:0] : opb[63:0];

        CMD_MIN:        t1 <= $signed(opa[63:0]) < $signed(opb[63:0]) ? opa[63:0] : opb[63:0];

        CMD_MAX:        t1 <= $signed(opa[63:0]) > $signed(opb[63:0]) ? opa[63:0] : opb[63:0];

        CMD_CAS:        t1 <= opa[63:0]==opb[63:0] ? opc[63:0] : opb[63:0];

        default:        t1 <= opa[63:0];

        endcase

`endif

default:

        case(req_fifoo.cmd)

        CMD_ADD:        t1 <= opa[127:0] + opb[127:0];

        CMD_AND:        t1 <= opa[127:0] & opb[127:0];

        CMD_OR:         t1 <= opa[127:0] | opb[127:0];

        CMD_EOR:        t1 <= opa[127:0] ^ opb[127:0];

`ifdef SUPPORT_AMO_SHIFT

        CMD_ASL:        t1 <= {opa[126:0],1'b0};

        CMD_LSR:        t1 <= {1'b0,opa[127:1]};

        CMD_ROL:        t1 <= {opa[126:0],opa[127]};

        CMD_ROR:        t1 <= {opa[0],opa[127:1]};

`endif

`ifdef SUPPORT_AMO_MULTI_SHIFT

        CMD_ASL:        t1 <= opa[127:0] << opb[6:0];

        CMD_LSR:        t1 <= opa[127:0] >> opb[6:0];

`endif

        CMD_MINU:       t1 <= opa[127:0] < opb[127:0] ? opa[127:0] : opb[127:0];

        CMD_MAXU:       t1 <= opa[127:0] > opb[127:0] ? opa[127:0] : opb[127:0];

        CMD_MIN:        t1 <= $signed(opa[127:0]) < $signed(opb[127:0]) ? opa[127:0] : opb[127:0];

        CMD_MAX:        t1 <= $signed(opa[127:0]) > $signed(opb[127:0]) ? opa[127:0] : opb[127:0];

        CMD_CAS:        t1 <= opa[127:0]==opb[127:0] ? opc[127:0] : opb[127:0];

        default:        t1 <= opa[127:0];

        endcase

endcase

always_ff @(posedge mem_ui_clk)

        rmw_dat <= t1 << {req_fifoo.padr[4:0],3'b0};

always_ff @(posedge mem_ui_clk)

if (mem_ui_rst) begin

        ch0oc.dat <= 'd0;

        ch1oc.dat <= 'd0;

        ch2oc.dat <= 'd0;

        ch3oc.dat <= 'd0;

        ch4oc.dat <= 'd0;

        ch5oc.dat <= 'd0;

        ch6oc.dat <= 'd0;

        ch7oc.dat <= 'd0;

end

else begin

if (state==WRITE_TRAMP1)

        case(req_fifoo.cid)

        4'd0:   ch0oc.dat <= opa;

        4'd1:   ch1oc.dat <= opa;

        4'd2:   ch2oc.dat <= opa;

        4'd3:   ch3oc.dat <= opa;

        4'd4:   ch4oc.dat <= opa;

        4'd5:   ch5oc.dat <= opa;

        4'd6:   ch6oc.dat <= opa;

        4'd7:   ch7oc.dat <= opa;

        default:        ;

        endcase

end

always_ff @(posedge mem_ui_clk)

if (mem_ui_rst)

        rmw_ack <= 1'b0;

else begin

        if (state==WRITE_TRAMP1)

                rmw_ack <= 1'b1;

        else if (state==IDLE)

                rmw_ack <= 1'b0;

end

always_comb     ch0oc.ack = ch0i.stb & rmw_ack & rmw0 && req_fifoo.cid==4'd0;

always_comb     ch1oc.ack = ch1i.stb & rmw_ack & rmw1 && req_fifoo.cid==4'd1;

always_comb     ch2oc.ack = ch2i.stb & rmw_ack & rmw2 && req_fifoo.cid==4'd2;

always_comb     ch3oc.ack = ch3i.stb & rmw_ack & rmw3 && req_fifoo.cid==4'd3;

always_comb     ch4oc.ack = ch4i.stb & rmw_ack & rmw4 && req_fifoo.cid==4'd4;

always_comb     ch5oc.ack = ch5i.stb & rmw_ack & rmw5 && req_fifoo.cid==4'd5;

always_comb     ch6oc.ack = ch6i.stb & rmw_ack & rmw6 && req_fifoo.cid==4'd6;

always_comb     ch7oc.ack = ch7i.stb & rmw_ack & rmw7 && req_fifoo.cid==4'd7;

`endif

// Setting the data value. Unlike reads there is only a single strip involved.

// Force unselected byte lanes to $FF