rtl/gfx: implement non-synthesizable matrix multiplier

1 files changed, 40 insertions, 0 deletions

diff --git a/rtl/gfx/vec_dot.sv b/rtl/gfx/vec_dot.sv
new file mode 100644
index 0000000..d984504
--- /dev/null
+++ b/rtl/gfx/vec_dot.sv
@@ -0,0 +1,40 @@
+`include "gfx/gfx_defs.sv"
+
+module vec_dot
+(
+	input  logic clk,
+	             rst_n,
+
+	input  logic start,
+	input  vec4  a,
+		         b,
+
+	output logic done,
+	output fp    q
+);
+
+	vec4 products;
+	logic dones[`FLOATS_PER_VEC];
+
+	horizontal_fold #(.N(`FLOATS_PER_VEC)) fold
+	(
+		.start(dones[0]),
+		.vec(products),
+		.*
+	);
+
+	genvar i;
+	generate
+		for (i = 0; i < `FLOATS_PER_VEC; ++i) begin: entries
+			fp_mul entry_i
+			(
+				.a(a[i]),
+				.b(b[i]),
+				.done(dones[i]),
+				.q(products[i]),
+				.*
+			);
+		end
+	endgenerate
+
+endmodule