platform/wavelet3d: refactor fpint pipeline

1 files changed, 78 insertions, 0 deletions

diff --git a/platform/wavelet3d/gfx_fpint.sv b/platform/wavelet3d/gfx_fpint.sv
new file mode 100644
index 0000000..babc916
--- /dev/null
+++ b/platform/wavelet3d/gfx_fpint.sv
@@ -0,0 +1,78 @@
+module gfx_fpint
+(
+	input  logic         clk,
+
+	input  gfx::word     a,
+	                     b,
+	input logic          setup_mul_float,
+	                     setup_unit_b,
+	                     mnorm_put_hi,
+	                     mnorm_put_lo,
+	                     mnorm_put_mul,
+	                     mnorm_zero_b,
+	                     mnorm_zero_flags,
+	                     minmax_copy_flags,
+	                     shiftr_int_signed,
+	                     addsub_copy_flags,
+	                     addsub_int_operand,
+	                     clz_force_nop,
+	                     shiftl_copy_flags,
+	                     round_copy_flags,
+	                     round_enable,
+	                     encode_enable,
+
+	output gfx::word     q
+);
+
+	import gfx::*;
+
+	fpint_op op, stage_op[FPINT_STAGES];
+
+	assign stage_op[0] = op;
+
+	assign op.setup_mul_float = setup_mul_float;
+	assign op.setup_unit_b = setup_unit_b;
+	assign op.mnorm_put_hi = mnorm_put_hi;
+	assign op.mnorm_put_lo = mnorm_put_lo;
+	assign op.mnorm_put_mul = mnorm_put_mul;
+	assign op.mnorm_zero_b = mnorm_zero_b;
+	assign op.mnorm_zero_flags = mnorm_zero_flags;
+	assign op.minmax_copy_flags = minmax_copy_flags;
+	assign op.shiftr_int_signed = shiftr_int_signed;
+	assign op.addsub_copy_flags = addsub_copy_flags;
+	assign op.addsub_int_operand = addsub_int_operand;
+	assign op.clz_force_nop = clz_force_nop;
+	assign op.shiftl_copy_flags = shiftl_copy_flags;
+	assign op.round_copy_flags = round_copy_flags;
+	assign op.round_enable = round_enable;
+	assign op.encode_enable = encode_enable;
+
+	gfx_fpint_lane lane
+	(
+		.clk(clk),
+		.a(a),
+		.b(b),
+		.q(q),
+		.mul_float_0(stage_op[0].setup_mul_float),
+		.unit_b_0(stage_op[0].setup_unit_b),
+		.put_hi_2(stage_op[2].mnorm_put_hi),
+		.put_lo_2(stage_op[2].mnorm_put_lo),
+		.put_mul_2(stage_op[2].mnorm_put_mul),
+		.zero_b_2(stage_op[2].mnorm_zero_b),
+		.zero_flags_2(stage_op[2].mnorm_zero_flags),
+		.copy_flags_3(stage_op[3].minmax_copy_flags),
+		.int_signed_5(stage_op[5].shiftr_int_signed),
+		.copy_flags_6(stage_op[6].addsub_copy_flags),
+		.int_operand_6(stage_op[6].addsub_int_operand),
+		.force_nop_7(stage_op[7].clz_force_nop),
+		.copy_flags_11(stage_op[11].shiftl_copy_flags),
+		.copy_flags_12(stage_op[12].round_copy_flags),
+		.enable_12(stage_op[12].round_enable),
+		.enable_14(stage_op[14].encode_enable)
+	);
+
+	always_ff @(posedge clk)
+		for (int i = 1; i < FPINT_STAGES; ++i)
+			stage_op[i] <= stage_op[i - 1];
+
+endmodule