rtl/gfx: implement non-synthesizable matrix multiplier

1 files changed, 26 insertions, 0 deletions

diff --git a/rtl/gfx/pipelined_flow.sv b/rtl/gfx/pipelined_flow.sv
new file mode 100644
index 0000000..1e3c1ce
--- /dev/null
+++ b/rtl/gfx/pipelined_flow.sv
@@ -0,0 +1,26 @@
+module pipelined_flow
+#(parameter STAGES=0)
+(
+	input  logic clk,
+	             rst_n,
+
+	input  logic start,
+	output logic done
+);
+
+	logic valid[STAGES];
+
+	assign done = valid[STAGES - 1];
+
+	always_ff @(posedge clk or negedge rst_n)
+		valid[0] <= !rst_n ? 0 : start;
+
+	genvar i;
+	generate
+		for (i = 1; i < STAGES; ++i) begin: pipeline
+			always_ff @(posedge clk or negedge rst_n)
+				valid[i] <= !rst_n ? 0 : valid[i - 1];
+		end
+	endgenerate
+
+endmodule