miegl/b210-k7-fpga
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fpga: rfnoc: Add ULTRASCALE to chdr_ingress_fifo

Browse Source 
Original-commit: a27d9e4fb92a895c0fe43b791e1d60838c8ad4c6
This commit is contained in:
Wade Fife
2023-02-13 10:50:45 -06:00
parent 4b6d01bf54
commit b26e5ed3a3
1 changed files with 10 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/rfnoc/core/chdr_ingress_fifo.v
+10 -9
View File
@@ -26,15 +26,16 @@ module chdr_ingress_fifo #(
);
localparam SIZE_THRESHOLD = (
(DEVICE == "7SERIES") ? 14 : (
(DEVICE == "VIRTEX6") ? 14 : (
(DEVICE == "SPARTAN6") ? 12 : (
(DEVICE == "ULTRASCALE") ? 12 : // Set to 12 to allow URAM
(DEVICE == "7SERIES") ? 14 : (
(DEVICE == "VIRTEX6") ? 14 : (
(DEVICE == "SPARTAN6") ? 12 : (
12
))));
wire [WIDTH-1:0] i_tdata_pre;
wire i_tlast_pre, i_tvalid_pre, i_tready_pre;
// SRL based FIFO to break timing paths to BRAM resources
axi_fifo_flop2 #(.WIDTH(WIDTH+1)) pre_fifo (
.clk(clk), .reset(reset), .clear(clear),
@@ -43,8 +44,8 @@ module chdr_ingress_fifo #(
.space(), .occupied()
);
generate
if (SIZE <= SIZE_THRESHOLD) begin
generate
if (SIZE <= SIZE_THRESHOLD) begin : gen_single_fifo
wire [WIDTH-1:0] o_tdata_int;
wire o_tlast_int, o_tvalid_int, o_tready_int;
// Instantiate a single axi_fifo if size is not larger than threshold
@@ -60,13 +61,13 @@ module chdr_ingress_fifo #(
.o_tdata({o_tlast, o_tdata}), .o_tvalid(o_tvalid), .o_tready(o_tready),
.space(), .occupied()
);
end else begin
end else begin : gen_fifo_cascade
// Instantiate a cascade of axi_fifos if size is larger than threshold
localparam CDEPTH = 2**(SIZE - SIZE_THRESHOLD); //Cascade Depth
wire [WIDTH-1:0] c_tdata[CDEPTH:0], int_tdata[CDEPTH-1:0];
wire c_tlast[CDEPTH:0], c_tvalid[CDEPTH:0], c_tready[CDEPTH:0];
wire int_tlast[CDEPTH-1:0], int_tvalid[CDEPTH-1:0], int_tready[CDEPTH-1:0];
//Connect input to first cascade state
assign {c_tdata[0], c_tlast[0], c_tvalid[0]} = {i_tdata_pre, i_tlast_pre, i_tvalid_pre};
assign i_tready_pre = c_tready[0];
@@ -92,4 +93,4 @@ module chdr_ingress_fifo #(
end
endgenerate
endmodule // axi_fifo_large
endmodule // chdr_ingress_fifo