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-rw-r--r--platform/wavelet3d/gfx_shader_regs.sv302
1 files changed, 0 insertions, 302 deletions
diff --git a/platform/wavelet3d/gfx_shader_regs.sv b/platform/wavelet3d/gfx_shader_regs.sv
deleted file mode 100644
index ef3a129..0000000
--- a/platform/wavelet3d/gfx_shader_regs.sv
+++ /dev/null
@@ -1,302 +0,0 @@
-module gfx_shader_regs
-import gfx::*;
-(
- input logic clk,
-
- gfx_regfile_io.regs io
-);
-
- // verilator tracing_off
-
- localparam PC_TABLE_PORTS = 2;
- localparam MASK_TABLE_PORTS = 1;
-
- word hold_imm[REGFILE_STAGES], imm_out, read_a_data_sgpr, read_b_data_scalar,
- read_b_data_sgpr, read_const, read_a_data_vgpr[SHADER_LANES],
- read_b_data_vgpr[SHADER_LANES], sgpr_out_a, sgpr_out_b;
-
- group_id mask_read_groups[MASK_TABLE_PORTS], pc_read_groups[PC_TABLE_PORTS];
- word_ptr pc_read[PC_TABLE_PORTS];
- lane_mask mask_read[MASK_TABLE_PORTS];
-
- logic a_scalar_out, b_is_const_out, b_is_imm_out, b_scalar_out, scalar_rev_out;
- group_id hold_read_group_1, hold_read_group_2;
- sgpr_num hold_read_a_sgpr;
- vgpr_num hold_read_a_vgpr_1, hold_read_a_vgpr_2, hold_read_b_vgpr_1, hold_read_b_vgpr_2;
- logic[REGFILE_STAGES - 1:0] hold_b_is_imm, hold_b_is_const;
- logic[REGFILE_STAGES + 1 - 1:0] hold_scalar_rev;
- logic[REGFILE_STAGES + 2 - 1:0] hold_a_scalar, hold_b_scalar;
-
- assign io.pc_back = pc_read[0];
- assign io.pc_front = pc_read[1];
- assign pc_read_groups[0] = io.pc_back_group;
- assign pc_read_groups[1] = io.pc_front_group;
-
- assign io.mask_back = mask_read[0];
- assign pc_read_groups[0] = io.mask_back_group;
-
- assign imm_out = hold_imm[$size(hold_imm) - 1];
- assign a_scalar_out = hold_a_scalar[$bits(hold_a_scalar) - 1];
- assign b_scalar_out = hold_b_scalar[$bits(hold_b_scalar) - 1];
- assign b_is_imm_out = hold_b_is_imm[$bits(hold_b_is_imm) - 1];
- assign b_is_const_out = hold_b_is_const[$bits(hold_b_is_const) - 1];
- assign scalar_rev_out = hold_scalar_rev[$bits(hold_scalar_rev) - 1];
-
- gfx_shader_table #(.DATA_WIDTH($bits(word_ptr)), .READ_PORTS(PC_TABLE_PORTS)) pc_table
- (
- .clk,
- .read(pc_read),
- .write(io.pc_wb),
- .read_groups(pc_read_groups),
- .write_group(io.pc_wb_group),
- .write_enable(io.pc_wb_write)
- );
-
- gfx_shader_table #(.DATA_WIDTH($bits(lane_mask)), .READ_PORTS(MASK_TABLE_PORTS)) mask_table
- (
- .clk,
- .read(mask_read),
- .write(io.mask_wb),
- .read_groups(mask_read_groups),
- .write_group(io.mask_wb_group),
- .write_enable(io.mask_wb_write)
- );
-
- gfx_shader_consts consts
- (
- .clk,
- .num(io.op.b_sgpr),
- .value(read_const)
- );
-
- gfx_shader_regfile #($bits(group_id) + $bits(sgpr_num)) sgprs
- (
- .clk,
-
- .read_a_num({hold_read_group_1, hold_read_a_sgpr}),
- .read_b_num({io.op.group, io.op.b_sgpr}),
- .read_a_data(read_a_data_sgpr),
- .read_b_data(read_b_data_sgpr),
-
- .write(io.sgpr_write.write),
- .write_num({io.sgpr_write.group, io.sgpr_write.sgpr}),
- .write_data(io.sgpr_write.data)
- );
-
- generate
- for (genvar i = 0; i < SHADER_LANES; ++i) begin: vgprs
- gfx_shader_regfile #($bits(group_id) + $bits(vgpr_num)) vgprs
- (
- .clk,
-
- .read_a_num({hold_read_group_2, hold_read_a_vgpr_2}),
- .read_b_num({hold_read_group_2, hold_read_b_vgpr_2}),
- .read_a_data(read_a_data_vgpr[i]),
- .read_b_data(read_b_data_vgpr[i]),
-
- .write(io.vgpr_write.mask[i]),
- .write_num({io.vgpr_write.group, io.vgpr_write.vgpr}),
- .write_data(io.vgpr_write.data[i])
- );
- end
- endgenerate
-
- always_ff @(posedge clk) begin
- hold_imm[0] <= {{($bits(word) - $bits(io.op.b_imm)){1'b0}}, io.op.b_imm};
- hold_a_scalar[0] <= io.op.a_scalar;
- hold_b_scalar[0] <= io.op.b_scalar;
- hold_b_is_imm[0] <= io.op.b_is_imm;
- hold_b_is_const[0] <= io.op.b_is_const;
- hold_scalar_rev[0] <= io.op.scalar_rev;
-
- for (int i = 1; i < REGFILE_STAGES; ++i) begin
- hold_imm[i] <= hold_imm[i - 1];
- hold_a_scalar[i] <= hold_a_scalar[i - 1];
- hold_b_scalar[i] <= hold_b_scalar[i - 1];
- hold_b_is_imm[i] <= hold_b_is_imm[i - 1];
- hold_b_is_const[i] <= hold_b_is_const[i - 1];
- hold_scalar_rev[i] <= hold_scalar_rev[i - 1];
- end
-
- for (int i = REGFILE_STAGES; i < REGFILE_STAGES + 2; ++i) begin
- hold_a_scalar[i] <= hold_a_scalar[i - 1];
- hold_b_scalar[i] <= hold_b_scalar[i - 1];
- end
-
- hold_scalar_rev[REGFILE_STAGES] <= hold_scalar_rev[REGFILE_STAGES - 1];
-
- hold_read_a_sgpr <= io.op.a_sgpr;
- hold_read_group_1 <= io.op.group;
- hold_read_group_2 <= hold_read_group_1;
-
- hold_read_a_vgpr_1 <= io.op.a_vgpr;
- hold_read_a_vgpr_2 <= hold_read_a_vgpr_1;
-
- hold_read_b_vgpr_1 <= io.op.b_vgpr;
- hold_read_b_vgpr_2 <= hold_read_b_vgpr_1;
-
- if (b_is_imm_out)
- read_b_data_scalar <= imm_out;
- else if (b_is_const_out)
- read_b_data_scalar <= read_const;
- else
- read_b_data_scalar <= read_b_data_sgpr;
-
- if (scalar_rev_out) begin
- sgpr_out_a <= read_b_data_scalar;
- sgpr_out_b <= read_a_data_sgpr;
- end else begin
- sgpr_out_a <= read_a_data_sgpr;
- sgpr_out_b <= read_b_data_scalar;
- end
-
- for (int i = 0; i < SHADER_LANES; ++i) begin
- io.a[i] <= a_scalar_out ? sgpr_out_a : read_a_data_vgpr[i];
- io.b[i] <= b_scalar_out ? sgpr_out_b : read_a_data_vgpr[i];
- end
- end
-
-endmodule
-
-module gfx_shader_consts
-import gfx::*;
-(
- input logic clk,
-
- input sgpr_num num,
- output word value
-);
-
- word hold_out, rom[1 << $bits(sgpr_num)];
- sgpr_num hold_in;
-
- always_ff @(posedge clk) begin
- value <= hold_out;
- hold_in <= num;
- hold_out <= rom[hold_in];
- end
-
- initial begin
- rom[0] = 'hffff_ffff; // -1
- rom[1] = 'h7fff_ffff; // 2^31 - 1, útil para abs de fp
- rom[2] = 'h8000_0000; // 2^31, útil para neg de fp
- rom[3] = 'h3f80_0000; // +1.0
- rom[4] = 'hbf80_0000; // -1.0
- end
-
-endmodule
-
-module gfx_shader_regfile
-import gfx::*;
-#(int DEPTH_LOG = 0)
-(
- input logic clk,
-
- input logic[DEPTH_LOG - 1:0] read_a_num,
- read_b_num,
- output word read_a_data,
- read_b_data,
-
- input logic write,
- input logic[DEPTH_LOG - 1:0] write_num,
- input word write_data
-);
-
- gfx_shader_regfile_port #(DEPTH_LOG) a
- (
- .clk,
- .write,
- .read_num(read_a_num),
- .read_data(read_a_data),
- .write_num,
- .write_data
- );
-
- gfx_shader_regfile_port #(DEPTH_LOG) b
- (
- .clk,
- .write,
- .read_num(read_b_num),
- .read_data(read_b_data),
- .write_num,
- .write_data
- );
-
-endmodule
-
-module gfx_shader_regfile_port
-import gfx::*;
-#(int DEPTH_LOG = 0)
-(
- input logic clk,
-
- input logic[DEPTH_LOG - 1:0] read_num,
- output word read_data,
-
- input logic write,
- input logic[DEPTH_LOG - 1:0] write_num,
- input word write_data
-);
-
- word file[1 << DEPTH_LOG], hold_read_data, hold_write_data;
- logic hold_write;
- logic[DEPTH_LOG - 1:0] hold_read_num, hold_write_num;
-
- // hold_write no necesita rst_n porque cualquier write inicial es inofensivo
-
- always_ff @(posedge clk) begin
- hold_write <= write;
- hold_read_num <= read_num;
- hold_write_num <= write_num;
- hold_write_data <= write_data;
-
- hold_read_data <= file[hold_read_num];
- if (hold_write)
- file[hold_write_num] <= hold_write_data;
-
- read_data <= hold_read_data;
- end
-
-endmodule
-
-module gfx_shader_table
-import gfx::*;
-#(int DATA_WIDTH = 0,
- int READ_PORTS = 0)
-(
- input logic clk,
-
- input group_id write_group,
- read_groups[READ_PORTS],
-
- input logic[DATA_WIDTH - 1:0] write,
- input logic write_enable,
-
- output logic[DATA_WIDTH - 1:0] read[READ_PORTS]
-);
-
- genvar i;
-
- generate
- for (i = 0; i < READ_PORTS; ++i) begin: ports
- logic write_enable_hold;
- group_id read_group_hold, write_group_hold;
- logic[DATA_WIDTH - 1:0] data[1 << $bits(group_id)], read_hold, write_hold;
-
- always_ff @(posedge clk) begin
- write_hold <= write;
- read_group_hold <= read_groups[i];
- write_group_hold <= write_group;
- write_enable_hold <= write_enable;
-
- read_hold <= data[read_group_hold];
-
- if (write_enable_hold)
- data[write_group_hold] <= write_hold;
-
- read[i] <= read_hold;
- end
- end
- endgenerate
-
-endmodule
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