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module gfx_shader_back
import gfx::*;
(
input logic clk,
rst_n,
gfx_front_back.back back,
gfx_regfile_io.ab read_data,
gfx_regfile_io.wb reg_wb
);
logic abort;
gfx_wb out_wb(), p0_wb(), p1_wb(), p2_wb(), p3_wb();
gfx_shake p1_shake(), p2_shake(), p3_shake();
gfx_shader_abort p0_abort
(
.clk,
.p1(p1_shake.peek),
.p2(p2_shake.peek),
.p3(p3_shake.peek),
.abort
);
gfx_shader_fpint p0
(
.clk,
.rst_n,
.op(back.execute.p0),
.wb(p0_wb.tx),
.abort,
.read_data,
.in_valid(back.dispatch.valid)
);
gfx_shader_mem p1
(
.clk,
.rst_n,
.op(back.execute.p1),
.wb(p1_wb.tx),
.in_shake(p1_shake.rx),
.read_data
);
gfx_shader_sfu p2
(
.clk,
.rst_n,
.op(back.execute.p2),
.wb(p2_wb.tx),
.in_shake(p2_shake.rx),
.read_data
);
gfx_shader_group p3
(
.clk,
.rst_n,
.op(back.execute.p3),
.wb(p3_wb.tx),
.in_shake(p3_shake.rx),
.read_data
);
gfx_shader_writeback_arbiter4 writeback_arbiter
(
.clk,
.rst_n,
.p0(p0_wb.rx),
.p1(p1_wb.rx),
.p2(p2_wb.rx),
.p3(p3_wb.rx),
.out(out_wb.tx)
);
gfx_shader_writeback writeback
(
.clk,
.rst_n,
.wb(out_wb.rx),
.regs(reg_wb)
);
endmodule
module gfx_shader_abort
(
input logic clk,
gfx_shake.peek p1,
p2,
p3,
output logic abort
);
always_ff @(posedge clk)
abort <=
(p1.valid & p1.ready)
| (p2.valid & p2.ready)
| (p3.valid & p3.ready);
endmodule
module gfx_shader_writeback_arbiter4
(
input logic clk,
rst_n,
gfx_wb.rx p0,
p1,
p2,
p3,
gfx_wb.tx out
);
assert property (
@(posedge clk)
disable iff (~rst_n)
(p0.ready & out.ready)
);
gfx_wb p0_p1(), p2_p3();
gfx_shader_writeback_arbiter2_prio arbiter_p0_p1
(
.clk,
.rst_n,
.a(p0),
.b(p1),
.out(p0_p1.tx)
);
gfx_shader_writeback_arbiter2_prio arbiter_p2_p3
(
.clk,
.rst_n,
.a(p2),
.b(p3),
.out(p2_p3.tx)
);
gfx_shader_writeback_arbiter2_prio arbiter_out
(
.clk,
.rst_n,
.a(p0_p1.rx),
.b(p2_p3.tx),
.out
);
endmodule
module gfx_shader_writeback_arbiter2_prio
(
input logic clk,
rst_n,
gfx_wb.rx a,
b,
gfx_wb.tx out
);
//TODO
assign a.ready = out.ready;
assign b.ready = 0;
assign out.dest = a.dest;
assign out.lanes = a.lanes;
assign out.group = a.group;
assign out.valid = a.valid;
assign out.scalar = a.scalar;
assign out.writeback = a.writeback;
endmodule
module gfx_shader_writeback
(
input logic clk,
rst_n,
gfx_wb.rx wb,
gfx_regfile_io.wb regs
);
endmodule
|
