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optimized opae cci to dev memcpy using double buffering and request window to work around unordered read requests

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This commit is contained in:
Blaise Tine
2020-04-23 01:30:45 -07:00
parent 3e64cb4380
commit 77a52ea20b
10 changed files with 249 additions and 110 deletions
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30
hw/rtl/libs/VX_generic_queue.v
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@@ -10,16 +10,16 @@ module VX_generic_queue #(
input wire push,
input wire pop,
output wire empty,
output wire full,
output wire full,
`IGNORE_WARNINGS_END
input wire [DATAW-1:0] data_in,
output wire [DATAW-1:0] data_out
);
if (SIZE == 0) begin
assign empty = 1;
assign data_out = data_in;
assign full = 0;
assign empty = 1;
assign data_out = data_in;
assign full = 0;
end else begin // (SIZE > 0)
@@ -56,10 +56,9 @@ module VX_generic_queue #(
end
end
assign data_out = head_r;
assign empty = (size_r == 0);
assign full = (size_r != 0) && !pop;
assign data_out = head_r;
assign empty = (size_r == 0);
assign full = (size_r != 0);
end else begin // (SIZE > 1)
reg [DATAW-1:0] curr_r;
@@ -82,18 +81,21 @@ module VX_generic_queue #(
always @(posedge clk) begin
if (reset) begin
size_r <= 0;
empty_r <= 1;
empty_r <= 1;
full_r <= 0;
end else begin
if (writing && !reading) begin
size_r <= size_r + 1;
empty_r <= 0;
if (size_r == SIZE-1)
if (size_r == SIZE-1) begin
full_r <= 1;
end else if (reading && !writing) begin
end
end else
if (reading && !writing) begin
size_r <= size_r - 1;
if (size_r == 1)
empty_r <= 1;
if (size_r == 1) begin
empty_r <= 1;
end;
full_r <= 0;
end
end
@@ -133,5 +135,5 @@ module VX_generic_queue #(
assign full = full_r;
end
end
endmodule