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|
`include "gfx/gfx_defs.sv"
module gfx_sp_shuffler
(
input logic clk,
rst_n,
input mat4 a,
b,
input insn_deco deco,
input logic in_valid,
output logic in_ready,
output wb_op wb,
input logic wb_ready,
output logic wb_valid
);
mat4 select_out, swizzle_out;
wb_op wb_out;
logic stall, is_swizzle;
vreg_num hold_dst;
gfx_pipeline_flow #(.STAGES(2)) flow
(
.out_ready(wb_ready),
.out_valid(wb_valid),
.*
);
gfx_skid_buf #(.WIDTH($bits(wb))) skid
(
.in(wb_out),
.out(wb),
.*
);
genvar gen_i;
generate
for (gen_i = 0; gen_i < `GFX_SP_LANES; ++gen_i) begin: lanes
gfx_sp_select select
(
.a(a[gen_i]),
.b(b[gen_i]),
.out(select_out[gen_i]),
.deco(deco.shuffler),
.*
);
gfx_sp_swizzle swizzle
(
.in(a[gen_i]),
.out(swizzle_out[gen_i]),
.deco(deco.shuffler),
.*
);
end
endgenerate
always_ff @(posedge clk)
if (!stall) begin
hold_dst <= deco.dst;
is_swizzle <= deco.shuffler.is_swizzle;
wb_out.dst <= hold_dst;
for (integer i = 0; i < `GFX_SP_LANES; ++i)
wb_out.data[i] <= is_swizzle ? swizzle_out[i] : select_out[i];
end
endmodule
|
