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Commit bb7c438f authored by Andrey Filippov's avatar Andrey Filippov
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Bug fixes, added parametrized generation of the address/strobe before data by... 

Bug fixes, added parametrized generation of the address/strobe before data by specified number of clock cycles
parent 5a276ebb
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Showing with 63 additions and 37 deletions
util_modules/cmd_deser.v
View file @ bb7c438f
......@@ -22,14 +22,15 @@
module cmd_deser#(
parameter ADDR=0,
parameter ADDR_MASK='hffff,
parameter NUM_CYCLES=6,
parameter ADDR_WIDTH=16,
parameter DATA_WIDTH=32,
parameter ADDR1=0, // optional second address
parameter ADDR_MASK1=0, // optional second mask
parameter ADDR2=0, // optional third address
parameter ADDR_MASK2=0 // optional third mask
parameter ADDR_MASK = 'hffff,
parameter NUM_CYCLES = 6,
parameter ADDR_WIDTH = 16,
parameter DATA_WIDTH = 32,
parameter ADDR1 = 0, // optional second address
parameter ADDR_MASK1 = 0, // optional second mask
parameter ADDR2 = 0, // optional third address
parameter ADDR_MASK2 = 0, // optional third mask
parameter WE_EARLY = 0 // if 1 - we and addr will be valid 1 cycle before data
)(
input rst,
input clk,
......@@ -51,7 +52,8 @@ module cmd_deser#(
.ADDR_MASK1 (ADDR_MASK1),
.ADDR2 (ADDR2),
.ADDR_MASK2 (ADDR_MASK2),
.WE_WIDTH (WE_WIDTH)
.WE_WIDTH (WE_WIDTH),
.WE_EARLY (WE_EARLY)
) i_cmd_deser_single (
.rst(rst),
.clk(clk),
......@@ -71,7 +73,8 @@ module cmd_deser#(
.ADDR_MASK1 (ADDR_MASK1),
.ADDR2 (ADDR2),
.ADDR_MASK2 (ADDR_MASK2),
.WE_WIDTH (WE_WIDTH)
.WE_WIDTH (WE_WIDTH),
.WE_EARLY (WE_EARLY)
) i_cmd_deser_dual (
.rst(rst),
.clk(clk),
......@@ -92,7 +95,8 @@ module cmd_deser#(
.ADDR_MASK1 (ADDR_MASK1),
.ADDR2 (ADDR2),
.ADDR_MASK2 (ADDR_MASK2),
.WE_WIDTH (WE_WIDTH)
.WE_WIDTH (WE_WIDTH),
.WE_EARLY (WE_EARLY)
) i_cmd_deser_multi (
.rst(rst),
.clk(clk),
......@@ -116,7 +120,9 @@ module cmd_deser_single#(
parameter ADDR_MASK1=0,
parameter ADDR2=0,
parameter ADDR_MASK2=0,
parameter WE_WIDTH=1
parameter WE_WIDTH=1,
parameter WE_EARLY = 0 //
)(
input rst,
input clk,
......@@ -134,21 +140,22 @@ module cmd_deser_single#(
localparam ADDR_MASK_LOW2= ADDR_MASK2 & 8'hff;
reg [7:0] deser_r;
wire [2:0] match_low;
reg [WE_WIDTH-1:0] we_r;
reg [2:0] we_r;
assign we=we_r;
assign we = (WE_EARLY > 0)?(match_low[WE_WIDTH-1:0] & {WE_WIDTH{stb}}):we_r[WE_WIDTH-1:0];
assign match_low= { // unused bits will be optimized
((ad ^ ADDR_LOW2) & (8'hff & ADDR_MASK_LOW2)) == 0,
((ad ^ ADDR_LOW1) & (8'hff & ADDR_MASK_LOW1)) == 0,
((ad ^ ADDR_LOW ) & (8'hff & ADDR_MASK_LOW )) == 0};
always @ (posedge rst or posedge clk) begin
if (rst) we_r <= 0;
else we_r <= match_low && stb;
else we_r <= match_low & {3{stb}};
if (rst) deser_r <= 0;
else if ((|match_low) && stb) deser_r <= ad;
end
assign data={DATA_WIDTH{1'b0}};
assign addr=deser_r[ADDR_WIDTH-1:0];
// assign addr=deser_r[ADDR_WIDTH-1:0];
assign addr=(WE_EARLY>0) ? ad[ADDR_WIDTH-1:0]: deser_r[ADDR_WIDTH-1:0];
endmodule
module cmd_deser_dual#(
......@@ -160,7 +167,8 @@ module cmd_deser_dual#(
parameter ADDR_MASK1=0,
parameter ADDR2=0,
parameter ADDR_MASK2=0,
parameter WE_WIDTH=1
parameter WE_WIDTH=1,
parameter WE_EARLY = 0 // if 1 - we and addr will be valid 1 cycle before data
)(
input rst,
input clk,
......@@ -187,12 +195,18 @@ module cmd_deser_dual#(
reg [15:0] deser_r;
reg stb_d;
// reg stb_d;
reg [2:0] stb_d;
wire [2:0] match_low;
wire [2:0] match_high;
reg [WE_WIDTH-1:0] we_r;
wire [2:0] we3;
reg [2:0] we_r;
// assign we=we_r;
assign we3 = (WE_EARLY > 0) ? (match_high & stb_d):we_r; // 3 bits wide - for each possible output
assign we = we3[WE_WIDTH-1:0]; // truncate
assign we=we_r;
assign match_low= {((ad ^ ADDR_LOW2) & (8'hff & ADDR_MASK_LOW2)) == 0,
((ad ^ ADDR_LOW1) & (8'hff & ADDR_MASK_LOW1)) == 0,
((ad ^ ADDR_LOW ) & (8'hff & ADDR_MASK_LOW )) == 0};
......@@ -201,15 +215,19 @@ module cmd_deser_dual#(
((ad ^ ADDR_HIGH ) & (8'hff & ADDR_MASK_HIGH )) == 0};
always @ (posedge rst or posedge clk) begin
if (rst) stb_d <= 1'b0;
else stb_d <= match_low && stb;
if (rst) we_r <= 1'b0;
else we_r <= match_high && stb_d;
if (rst) stb_d <= 3'b0;
// else stb_d <= match_low && stb;
else stb_d <= stb?match_low:3'b0;
if (rst) we_r <= 3'b0;
else we_r <= match_high & stb_d;
if (rst) deser_r[15:0] <= 0;
else if ((match_low && stb) || (match_high && stb_d)) deser_r[15:0] <= {ad,deser_r[15:8]};
end
assign data=0; // {DATA_WIDTH{1'b0}};
assign addr=deser_r[ADDR_WIDTH-1:0];
// assign addr=deser_r[ADDR_WIDTH-1:0];
assign addr=deser_r[8*WE_EARLY +: ADDR_WIDTH];
endmodule
module cmd_deser_multi#(
......@@ -222,7 +240,8 @@ module cmd_deser_multi#(
parameter ADDR_MASK1=0,
parameter ADDR2=0,
parameter ADDR_MASK2=0,
parameter WE_WIDTH=1
parameter WE_WIDTH=1,
parameter WE_EARLY = 0 // if 1 - we and addr will be valid 1 cycle before data
)(
input rst,
input clk,
......@@ -255,7 +274,12 @@ module cmd_deser_multi#(
reg [NUM_CYCLES-2:0] sr;
reg [NUM_CYCLES-2:0] sr1;
reg [NUM_CYCLES-2:0] sr2;
assign we=sr[0]; // we_r;
wire [2:0] we3;
assign we3={sr2[WE_EARLY],sr1[WE_EARLY],sr[WE_EARLY]};
// assign we=sr[WE_WIDTH-1:0]; // we_r;
assign we=we3[WE_WIDTH-1:0]; // truncate to required number of bits
assign match_low= {((ad ^ ADDR_LOW2) & (8'hff & ADDR_MASK_LOW2)) == 0,
((ad ^ ADDR_LOW1) & (8'hff & ADDR_MASK_LOW1)) == 0,
((ad ^ ADDR_LOW ) & (8'hff & ADDR_MASK_LOW )) == 0};
......@@ -265,17 +289,18 @@ module cmd_deser_multi#(
always @ (posedge rst or posedge clk) begin
if (rst) stb_d <= 0;
else stb_d <= stb?match_low:3'b0;
if (rst) sr <= 0;
else if (match_high[0] && stb_d) sr <= 1 << (NUM_CYCLES-2);
else sr <= {1'b0,sr[NUM_CYCLES-2:1]};
if (rst) sr1<= 0;
else if (match_high[1] && stb_d) sr1 <= 1 << (NUM_CYCLES-2);
else sr1 <= {1'b0,sr1[NUM_CYCLES-2:1]};
if (rst) sr <= 0;
else if (match_high[0] && stb_d[0]) sr <= 1 << (NUM_CYCLES-2);
else sr <= {1'b0,sr[NUM_CYCLES-2:1]};
if (rst) sr1<= 0;
else if (match_high[1] && stb_d[1]) sr1 <= 1 << (NUM_CYCLES-2);
else sr1 <= {1'b0,sr1[NUM_CYCLES-2:1]};
if (rst) sr2 <= 0;
else if (match_high[2] && stb_d) sr2 <= 1 << (NUM_CYCLES-2);
else sr2 <= {1'b0,sr2[NUM_CYCLES-2:1]};
if (rst) sr2 <= 0;
else if (match_high[2] && stb_d[2]) sr2 <= 1 << (NUM_CYCLES-2);
else sr2 <= {1'b0,sr2[NUM_CYCLES-2:1]};
if (rst) deser_r[8*NUM_CYCLES-1:0] <= 0;
else if ((match_low && (|stb)) ||
......@@ -284,5 +309,6 @@ module cmd_deser_multi#(
end
assign data=deser_r[DATA_WIDTH+15:16];
assign addr=deser_r[ADDR_WIDTH-1:0];
// assign addr=deser_r[ADDR_WIDTH-1:0];
assign addr=deser_r[8*WE_EARLY +: ADDR_WIDTH];
endmodule
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