diff options
Diffstat (limited to 'techlibs/common')
| -rw-r--r-- | techlibs/common/simlib.v | 86 | ||||
| -rw-r--r-- | techlibs/common/techmap.v | 86 |
2 files changed, 172 insertions, 0 deletions
diff --git a/techlibs/common/simlib.v b/techlibs/common/simlib.v index 17700a61..eabd6595 100644 --- a/techlibs/common/simlib.v +++ b/techlibs/common/simlib.v @@ -755,6 +755,92 @@ endmodule // -------------------------------------------------------- +module \$macc (A, B, Y); + parameter A_WIDTH = 0; + parameter B_WIDTH = 0; + parameter Y_WIDTH = 0; + parameter CONFIG = 4'b0000; + parameter CONFIG_WIDTH = 4; + + input [A_WIDTH-1:0] A; + input [B_WIDTH-1:0] B; + output reg [Y_WIDTH-1:0] Y; + + localparam integer num_bits = CONFIG[3:0]; + localparam integer num_ports = (CONFIG_WIDTH-4) / (2 + 2*num_bits); + localparam integer num_abits = $clog2(A_WIDTH); + + function [2*num_ports*num_abits-1:0] get_port_offsets; + input [CONFIG_WIDTH-1:0] CONFIG; + integer i, cursor; + begin + cursor = 0; + get_port_offsets = 0; + for (i = 0; i < num_ports; i = i+1) begin + get_port_offsets[(2*i + 0)*num_abits +: num_abits] = cursor; + cursor = cursor + CONFIG[4 + i*(2 + 2*num_bits) + 2 +: num_bits]; + get_port_offsets[(2*i + 1)*num_abits +: num_abits] = cursor; + cursor = cursor + CONFIG[4 + i*(2 + 2*num_bits) + 2 + num_bits +: num_bits]; + end + end + endfunction + + localparam [2*num_ports*num_abits-1:0] port_offsets = get_port_offsets(CONFIG); + + `define PORT_IS_SIGNED (0 + CONFIG[4 + i*(2 + 2*num_bits)]) + `define PORT_DO_SUBTRACT (0 + CONFIG[4 + i*(2 + 2*num_bits) + 1]) + `define PORT_SIZE_A (0 + CONFIG[4 + i*(2 + 2*num_bits) + 2 +: num_bits]) + `define PORT_SIZE_B (0 + CONFIG[4 + i*(2 + 2*num_bits) + 2 + num_bits +: num_bits]) + `define PORT_OFFSET_A (0 + port_offsets[2*i*num_abits +: num_abits]) + `define PORT_OFFSET_B (0 + port_offsets[2*i*num_abits + num_abits +: num_abits]) + + integer i, j; + reg [Y_WIDTH-1:0] tmp_a, tmp_b; + + always @* begin + Y = 0; + for (i = 0; i < num_ports; i = i+1) + begin + tmp_a = 0; + tmp_b = 0; + + for (j = 0; j < `PORT_SIZE_A; j = j+1) + tmp_a[j] = A[`PORT_OFFSET_A + j]; + + if (`PORT_IS_SIGNED && `PORT_SIZE_A > 0) + for (j = `PORT_SIZE_A; j < Y_WIDTH; j = j+1) + tmp_a[j] = tmp_a[`PORT_SIZE_A-1]; + + for (j = 0; j < `PORT_SIZE_B; j = j+1) + tmp_b[j] = A[`PORT_OFFSET_B + j]; + + if (`PORT_IS_SIGNED && `PORT_SIZE_B > 0) + for (j = `PORT_SIZE_B; j < Y_WIDTH; j = j+1) + tmp_b[j] = tmp_b[`PORT_SIZE_B-1]; + + if (`PORT_SIZE_B > 0) + tmp_a = tmp_a * tmp_b; + + if (`PORT_DO_SUBTRACT) + Y = Y - tmp_a; + else + Y = Y + tmp_a; + end + for (i = 0; i < B_WIDTH; i = i+1) begin + Y = Y + B[i]; + end + end + + `undef PORT_IS_SIGNED + `undef PORT_DO_SUBTRACT + `undef PORT_SIZE_A + `undef PORT_SIZE_B + `undef PORT_OFFSET_A + `undef PORT_OFFSET_B +endmodule + +// -------------------------------------------------------- + module \$div (A, B, Y); parameter A_SIGNED = 0; diff --git a/techlibs/common/techmap.v b/techlibs/common/techmap.v index fccbe2f8..8237a737 100644 --- a/techlibs/common/techmap.v +++ b/techlibs/common/techmap.v @@ -579,6 +579,92 @@ module \$mul (A, B, Y); ); endmodule +module \$macc (A, B, Y); + parameter A_WIDTH = 0; + parameter B_WIDTH = 0; + parameter Y_WIDTH = 0; + parameter CONFIG = 4'b0000; + parameter CONFIG_WIDTH = 4; + + input [A_WIDTH-1:0] A; + input [B_WIDTH-1:0] B; + output reg [Y_WIDTH-1:0] Y; + + wire [1023:0] _TECHMAP_DO_ = "proc; opt -fast"; + + localparam integer num_bits = CONFIG[3:0]; + localparam integer num_ports = (CONFIG_WIDTH-4) / (2 + 2*num_bits); + localparam integer num_abits = $clog2(A_WIDTH); + + function [2*num_ports*num_abits-1:0] get_port_offsets; + input [CONFIG_WIDTH-1:0] CONFIG; + integer i, cursor; + begin + cursor = 0; + get_port_offsets = 0; + for (i = 0; i < num_ports; i = i+1) begin + get_port_offsets[(2*i + 0)*num_abits +: num_abits] = cursor; + cursor = cursor + CONFIG[4 + i*(2 + 2*num_bits) + 2 +: num_bits]; + get_port_offsets[(2*i + 1)*num_abits +: num_abits] = cursor; + cursor = cursor + CONFIG[4 + i*(2 + 2*num_bits) + 2 + num_bits +: num_bits]; + end + end + endfunction + + localparam [2*num_ports*num_abits-1:0] port_offsets = get_port_offsets(CONFIG); + + `define PORT_IS_SIGNED (0 + CONFIG[4 + i*(2 + 2*num_bits)]) + `define PORT_DO_SUBTRACT (0 + CONFIG[4 + i*(2 + 2*num_bits) + 1]) + `define PORT_SIZE_A (0 + CONFIG[4 + i*(2 + 2*num_bits) + 2 +: num_bits]) + `define PORT_SIZE_B (0 + CONFIG[4 + i*(2 + 2*num_bits) + 2 + num_bits +: num_bits]) + `define PORT_OFFSET_A (0 + port_offsets[2*i*num_abits +: num_abits]) + `define PORT_OFFSET_B (0 + port_offsets[2*i*num_abits + num_abits +: num_abits]) + + integer i, j; + reg [Y_WIDTH-1:0] tmp_a, tmp_b; + + always @* begin + Y = 0; + for (i = 0; i < num_ports; i = i+1) + begin + tmp_a = 0; + tmp_b = 0; + + for (j = 0; j < `PORT_SIZE_A; j = j+1) + tmp_a[j] = A[`PORT_OFFSET_A + j]; + + if (`PORT_IS_SIGNED && `PORT_SIZE_A > 0) + for (j = `PORT_SIZE_A; j < Y_WIDTH; j = j+1) + tmp_a[j] = tmp_a[`PORT_SIZE_A-1]; + + for (j = 0; j < `PORT_SIZE_B; j = j+1) + tmp_b[j] = A[`PORT_OFFSET_B + j]; + + if (`PORT_IS_SIGNED && `PORT_SIZE_B > 0) + for (j = `PORT_SIZE_B; j < Y_WIDTH; j = j+1) + tmp_b[j] = tmp_b[`PORT_SIZE_B-1]; + + if (`PORT_SIZE_B > 0) + tmp_a = tmp_a * tmp_b; + + if (`PORT_DO_SUBTRACT) + Y = Y - tmp_a; + else + Y = Y + tmp_a; + end + for (i = 0; i < B_WIDTH; i = i+1) begin + Y = Y + B[i]; + end + end + + `undef PORT_IS_SIGNED + `undef PORT_DO_SUBTRACT + `undef PORT_SIZE_A + `undef PORT_SIZE_B + `undef PORT_OFFSET_A + `undef PORT_OFFSET_B +endmodule + // -------------------------------------------------------- // Divide and Modulo |