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[/] [versatile_library/] [trunk/] [rtl/] [verilog/] [wb.v] - Diff between revs 83 and 84

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Rev 83 Rev 84
Line 42... Line 42...
 
 
`ifdef WB_ADR_INC
`ifdef WB_ADR_INC
// async wb3 - wb3 bridge
// async wb3 - wb3 bridge
`timescale 1ns/1ns
`timescale 1ns/1ns
`define MODULE wb_adr_inc
`define MODULE wb_adr_inc
module `BASE`MODULE ( cyc_i, stb_i, cti_i, bte_i, adr_i, ack_o, adr_o, clk, rst);
module `BASE`MODULE ( cyc_i, stb_i, cti_i, bte_i, adr_i, we_i, ack_o, adr_o, clk, rst);
`undef MODULE
`undef MODULE
parameter adr_width = 10;
parameter adr_width = 10;
parameter max_burst_width = 4;
parameter max_burst_width = 4;
input cyc_i, stb_i;
input cyc_i, stb_i, we_i;
input [2:0] cti_i;
input [2:0] cti_i;
input [1:0] bte_i;
input [1:0] bte_i;
input [adr_width-1:0] adr_i;
input [adr_width-1:0] adr_i;
output [adr_width-1:0] adr_o;
output [adr_width-1:0] adr_o;
output ack_o;
output ack_o;
Line 83... Line 83...
        last_cycle <= (!cyc_i) ? idle :
        last_cycle <= (!cyc_i) ? idle :
                      (cyc_i & ack_o & (cti_i==3'b000 | cti_i==3'b111)) ? eoc :
                      (cyc_i & ack_o & (cti_i==3'b000 | cti_i==3'b111)) ? eoc :
                      (cyc_i & !stb_i) ? ws :
                      (cyc_i & !stb_i) ? ws :
                      cyc;
                      cyc;
    assign to_adr = (last_cycle==idle | last_cycle==eoc) ? adr_i[max_burst_width-1:0] : adr[max_burst_width-1:0];
    assign to_adr = (last_cycle==idle | last_cycle==eoc) ? adr_i[max_burst_width-1:0] : adr[max_burst_width-1:0];
    assign adr_o[max_burst_width-1:0] = (last_cycle==idle | last_cycle==eoc) ? adr_i[max_burst_width-1:0] : adr[max_burst_width-1:0];
    assign adr_o[max_burst_width-1:0] = (we_i) ? adr_i[max_burst_width-1:0] :
 
                                        (last_cycle==idle | last_cycle==eoc) ? adr_i[max_burst_width-1:0] :
 
                                        adr[max_burst_width-1:0];
    assign ack_o = last_cycle == cyc;
    assign ack_o = last_cycle == cyc;
end
end
endgenerate
endgenerate
 
 
generate
generate
Line 386... Line 388...
        // wishbone slave side
        // wishbone slave side
        wbs_dat_i, wbs_adr_i, wbs_sel_i, wbs_bte_i, wbs_cti_i, wbs_we_i, wbs_cyc_i, wbs_stb_i, wbs_dat_o, wbs_ack_o, wbs_clk, wbs_rst,
        wbs_dat_i, wbs_adr_i, wbs_sel_i, wbs_bte_i, wbs_cti_i, wbs_we_i, wbs_cyc_i, wbs_stb_i, wbs_dat_o, wbs_ack_o, wbs_clk, wbs_rst,
        // avalon master side
        // avalon master side
        readdata, readdatavalid, address, read, be, write, burstcount, writedata, waitrequest, beginbursttransfer, clk, rst);
        readdata, readdatavalid, address, read, be, write, burstcount, writedata, waitrequest, beginbursttransfer, clk, rst);
 
 
 
parameter linewrapburst = 1'b0;
 
 
input [31:0] wbs_dat_i;
input [31:0] wbs_dat_i;
input [31:2] wbs_adr_i;
input [31:2] wbs_adr_i;
input [3:0]  wbs_sel_i;
input [3:0]  wbs_sel_i;
input [1:0]  wbs_bte_i;
input [1:0]  wbs_bte_i;
input [2:0]  wbs_cti_i;
input [2:0]  wbs_cti_i;
Line 447... Line 451...
if (rst) begin
if (rst) begin
    counter <= 4'd0;
    counter <= 4'd0;
end else
end else
    if (wbm_we_o) begin
    if (wbm_we_o) begin
        if (!waitrequest & !last_cyc & wbm_cyc_o) begin
        if (!waitrequest & !last_cyc & wbm_cyc_o) begin
            counter <= burstcount -1;
            counter <= burstcount -4'd1;
        end else if (waitrequest & !last_cyc & wbm_cyc_o) begin
        end else if (waitrequest & !last_cyc & wbm_cyc_o) begin
            counter <= burstcount;
            counter <= burstcount;
        end else if (!waitrequest & wbm_stb_o) begin
        end else if (!waitrequest & wbm_stb_o) begin
            counter <= counter - 4'd1;
            counter <= counter - 4'd1;
        end
        end
Line 797... Line 801...
`undef MODULE
`undef MODULE
    wbs_dat_i, wbs_adr_i, wbs_cti_i, wbs_bte_i, wbs_sel_i, wbs_we_i, wbs_stb_i, wbs_cyc_i,
    wbs_dat_i, wbs_adr_i, wbs_cti_i, wbs_bte_i, wbs_sel_i, wbs_we_i, wbs_stb_i, wbs_cyc_i,
    wbs_dat_o, wbs_ack_o, wb_clk, wb_rst);
    wbs_dat_o, wbs_ack_o, wb_clk, wb_rst);
 
 
parameter adr_size = 16;
parameter adr_size = 16;
parameter adr_lo   = 2;
parameter mem_size = 1<<adr_size;
parameter mem_size = 1<<16;
 
parameter dat_size = 32;
parameter dat_size = 32;
parameter max_burst_width = 4;
parameter max_burst_width = 4;
parameter memory_init = 1;
parameter memory_init = 1;
parameter memory_file = "vl_ram.vmem";
parameter memory_file = "vl_ram.vmem";
 
 
localparam aw = (adr_size - adr_lo);
localparam aw = (adr_size);
localparam dw = dat_size;
localparam dw = dat_size;
localparam sw = dat_size/8;
localparam sw = dat_size/8;
localparam cw = 3;
localparam cw = 3;
localparam bw = 2;
localparam bw = 2;
 
 
Line 819... Line 822...
input [sw-1:0] wbs_sel_i;
input [sw-1:0] wbs_sel_i;
input wbs_we_i, wbs_stb_i, wbs_cyc_i;
input wbs_we_i, wbs_stb_i, wbs_cyc_i;
output [dw-1:0] wbs_dat_o;
output [dw-1:0] wbs_dat_o;
output wbs_ack_o;
output wbs_ack_o;
input wb_clk, wb_rst;
input wb_clk, wb_rst;
reg wbs_ack_o;
 
 
 
wire [aw-1:0] adr;
wire [aw-1:0] adr;
 
 
`define MODULE ram_be
`define MODULE ram_be
`BASE`MODULE # (
`BASE`MODULE # (
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ram0(
ram0(
`undef MODULE
`undef MODULE
    .d(wbs_dat_i),
    .d(wbs_dat_i),
    .adr(adr),
    .adr(adr),
    .be(wbs_sel_i),
    .be(wbs_sel_i),
    .we(wbs_we_i),
    .we(wbs_we_i & wb_ack_o),
    .q(wbs_dat_o),
    .q(wbs_dat_o),
    .clk(wb_clk)
    .clk(wb_clk)
);
);
 
 
`define MODULE wb_adr_inc
`define MODULE wb_adr_inc
Line 847... Line 849...
    .cyc_i(wbs_cyc_i),
    .cyc_i(wbs_cyc_i),
    .stb_i(wbs_stb_i),
    .stb_i(wbs_stb_i),
    .cti_i(wbs_cti_i),
    .cti_i(wbs_cti_i),
    .bte_i(wbs_bte_i),
    .bte_i(wbs_bte_i),
    .adr_i(wbs_adr_i),
    .adr_i(wbs_adr_i),
 
    .we_i(wbs_we_i),
    .ack_o(wbs_ack_o),
    .ack_o(wbs_ack_o),
    .adr_o(adr),
    .adr_o(adr),
    .clk(wb_clk),
    .clk(wb_clk),
    .rst(wb_rst));
    .rst(wb_rst));
`undef MODULE
`undef MODULE

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