platform/wavelet3d: implement shader cores

This commit contains over a month of intermittent work (I don't have
enough free time to do this the right way)

1 files changed, 76 insertions, 0 deletions

diff --git a/platform/wavelet3d/gfx_regfile_io.sv b/platform/wavelet3d/gfx_regfile_io.sv
new file mode 100644
index 0000000..49dcd5c
--- /dev/null
+++ b/platform/wavelet3d/gfx_regfile_io.sv
@@ -0,0 +1,76 @@
+interface gfx_regfile_io;
+
+	import gfx::*;
+
+	struct
+	{
+		group_id    group;
+		sgpr_num    a_sgpr,
+		            b_sgpr;
+		vgpr_num    a_vgpr,
+		            b_vgpr;
+		logic[12:0] b_imm;
+		logic       a_scalar,
+		            b_scalar,
+		            b_is_imm,
+		            b_is_const,
+		            scalar_rev;
+	} op;
+
+	struct
+	{
+		logic    write;
+		group_id group;
+		sgpr_num sgpr;
+		word     data;
+	} sgpr_write;
+
+	struct
+	{
+		lane_mask mask;
+		group_id  group;
+		vgpr_num  vgpr;
+		word      data[SHADER_LANES];
+	} vgpr_write;
+
+	word a[SHADER_LANES], b[SHADER_LANES], sgpr_write_data, vgpr_write_data[SHADER_LANES];
+	word_ptr pc_front;
+	group_id pc_front_group;
+
+	modport ab
+	(
+		input  a,
+		       b
+	);
+
+	modport read
+	(
+		output op
+	);
+
+	modport bind_
+	(
+		input  pc_front,
+
+		output pc_front_group
+	);
+
+	modport wb
+	(
+		output sgpr_write,
+		       vgpr_write
+	);
+
+	modport regs
+	(
+		input  op,
+		       sgpr_write,
+		       vgpr_write,
+		       pc_front_group,
+
+		output a,
+		       b,
+		       pc_front
+	);
+
+endinterface