From d84718bf7955a6bba03aa44938f0f140c1a6390d Mon Sep 17 00:00:00 2001 From: Alejandro Soto Date: Sat, 21 Oct 2023 03:21:18 -0600 Subject: rtl/gfx: implement non-synthesizable matrix multiplier --- rtl/gfx/gfx.sv | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 rtl/gfx/gfx.sv (limited to 'rtl/gfx/gfx.sv') diff --git a/rtl/gfx/gfx.sv b/rtl/gfx/gfx.sv new file mode 100644 index 0000000..ab2bcce --- /dev/null +++ b/rtl/gfx/gfx.sv @@ -0,0 +1,40 @@ +`include "gfx/gfx_defs.sv" + +module gfx +( + input logic clk, + rst_n, + + input logic[4:0] cmd_address, + input logic cmd_read, + cmd_write, + input logic[31:0] cmd_writedata, + output logic[31:0] cmd_readdata +); + + mat4 a, b, q, hold_q; + logic start, done; + + assign cmd_readdata = hold_q[cmd_address[3:2]][cmd_address[1:0]]; + + mat_mat_mul mul + ( + .* + ); + + always_ff @(posedge clk) begin + if (cmd_write) begin + if (cmd_address[4]) + a[cmd_address[3:2]][cmd_address[1:0]] <= cmd_writedata; + else + b[cmd_address[3:2]][cmd_address[1:0]] <= cmd_writedata; + end + + if (done) + hold_q <= q; + end + + always_ff @(posedge clk or negedge rst_n) + start <= !rst_n ? 0 : (cmd_write && cmd_address == 5'b11111); + +endmodule -- cgit v1.2.3