diff options
Diffstat (limited to 'techlibs/xilinx/cells_map.v')
| -rw-r--r-- | techlibs/xilinx/cells_map.v | 132 |
1 files changed, 12 insertions, 120 deletions
diff --git a/techlibs/xilinx/cells_map.v b/techlibs/xilinx/cells_map.v index f8f9356bc..b5114758c 100644 --- a/techlibs/xilinx/cells_map.v +++ b/techlibs/xilinx/cells_map.v @@ -18,6 +18,18 @@ * */ +// Convert negative-polarity reset to positive-polarity +(* techmap_celltype = "$_DFF_NN0_" *) +module _90_dff_nn0_to_np0(input D, C, R, output Q); \$_DFF_NP0_ _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .R(~R)); endmodule +(* techmap_celltype = "$_DFF_PN0_" *) +module _90_dff_pn0_to_pp0(input D, C, R, output Q); \$_DFF_PP0_ _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .R(~R)); endmodule + +(* techmap_celltype = "$_DFF_NN1_" *) +module _90_dff_nn1_to_np1 (input D, C, R, output Q); \$_DFF_NP1 _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .R(~R)); endmodule +(* techmap_celltype = "$_DFF_PN1_" *) +module _90_dff_pn1_to_pp1 (input D, C, R, output Q); \$_DFF_PP1 _TECHMAP_REPLACE_ (.D(D), .Q(Q), .C(C), .R(~R)); endmodule + + module \$__SHREG_ (input C, input D, input E, output Q); parameter DEPTH = 0; parameter [DEPTH-1:0] INIT = 0; @@ -142,123 +154,3 @@ module \$__XILINX_SHREG_ (input C, input D, input [31:0] L, input E, output Q, o end endgenerate endmodule - -module \$__XILINX_SHIFTX (A, B, Y); - parameter A_SIGNED = 0; - parameter B_SIGNED = 0; - parameter A_WIDTH = 1; - parameter B_WIDTH = 1; - parameter Y_WIDTH = 1; - - input [A_WIDTH-1:0] A; - input [B_WIDTH-1:0] B; - output [Y_WIDTH-1:0] Y; - - parameter [A_WIDTH-1:0] _TECHMAP_CONSTMSK_A_ = 0; - parameter [A_WIDTH-1:0] _TECHMAP_CONSTVAL_A_ = 0; - parameter [B_WIDTH-1:0] _TECHMAP_CONSTMSK_B_ = 0; - parameter [B_WIDTH-1:0] _TECHMAP_CONSTVAL_B_ = 0; - - function integer compute_num_leading_X_in_A; - integer i, c; - begin - compute_num_leading_X_in_A = 0; - c = 1; - for (i = A_WIDTH-1; i >= 0; i=i-1) begin - if (!_TECHMAP_CONSTMSK_A_[i] || _TECHMAP_CONSTVAL_A_[i] !== 1'bx) - c = 0; - compute_num_leading_X_in_A = compute_num_leading_X_in_A + c; - end - end - endfunction - localparam num_leading_X_in_A = compute_num_leading_X_in_A(); - - generate - genvar i, j; - // Bit-blast - if (Y_WIDTH > 1) begin - for (i = 0; i < Y_WIDTH; i++) - \$__XILINX_SHIFTX #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH(A_WIDTH-Y_WIDTH+1), .B_WIDTH(B_WIDTH), .Y_WIDTH(1'd1)) bitblast (.A(A[A_WIDTH-Y_WIDTH+i:i]), .B(B), .Y(Y[i])); - end - // If the LSB of B is constant zero (and Y_WIDTH is 1) then - // we can optimise by removing every other entry from A - // and popping the constant zero from B - else if (_TECHMAP_CONSTMSK_B_[0] && !_TECHMAP_CONSTVAL_B_[0]) begin - wire [(A_WIDTH+1)/2-1:0] A_i; - for (i = 0; i < (A_WIDTH+1)/2; i++) - assign A_i[i] = A[i*2]; - \$__XILINX_SHIFTX #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH((A_WIDTH+1'd1)/2'd2), .B_WIDTH(B_WIDTH-1'd1), .Y_WIDTH(Y_WIDTH)) _TECHMAP_REPLACE_ (.A(A_i), .B(B[B_WIDTH-1:1]), .Y(Y)); - end - // Trim off any leading 1'bx -es in A, and resize B accordingly - else if (num_leading_X_in_A > 0) begin - localparam A_WIDTH_new = A_WIDTH - num_leading_X_in_A; - localparam B_WIDTH_new = $clog2(A_WIDTH_new); - \$__XILINX_SHIFTX #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH(A_WIDTH_new), .B_WIDTH(B_WIDTH_new), .Y_WIDTH(Y_WIDTH)) _TECHMAP_REPLACE_ (.A(A[A_WIDTH_new-1:0]), .B(B[B_WIDTH_new-1:0]), .Y(Y)); - end - else if (B_WIDTH < 3 || A_WIDTH <= 4) begin - \$shiftx #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH(A_WIDTH), .B_WIDTH(B_WIDTH), .Y_WIDTH(Y_WIDTH)) _TECHMAP_REPLACE_ (.A(A), .B(B), .Y(Y)); - end - else if (B_WIDTH == 3) begin - localparam a_width0 = 2 ** 2; - localparam a_widthN = A_WIDTH - a_width0; - wire T0, T1; - \$shiftx #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH(a_width0), .B_WIDTH(2), .Y_WIDTH(Y_WIDTH)) fpga_soft_mux (.A(A[a_width0-1:0]), .B(B[2-1:0]), .Y(T0)); - if (a_widthN > 1) - \$shiftx #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH(a_widthN), .B_WIDTH($clog2(a_widthN)), .Y_WIDTH(Y_WIDTH)) fpga_soft_mux_last (.A(A[A_WIDTH-1:a_width0]), .B(B[$clog2(a_widthN)-1:0]), .Y(T1)); - else - assign T1 = A[A_WIDTH-1]; - MUXF7 fpga_hard_mux (.I0(T0), .I1(T1), .S(B[B_WIDTH-1]), .O(Y)); - end - else if (B_WIDTH == 4) begin - localparam a_width0 = 2 ** 2; - localparam num_mux8 = A_WIDTH / a_width0; - localparam a_widthN = A_WIDTH - num_mux8*a_width0; - wire [4-1:0] T; - wire T0, T1; - for (i = 0; i < 4; i++) - if (i < num_mux8) - \$shiftx #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH(a_width0), .B_WIDTH(2), .Y_WIDTH(Y_WIDTH)) fpga_soft_mux (.A(A[i*a_width0+:a_width0]), .B(B[2-1:0]), .Y(T[i])); - else if (i == num_mux8 && a_widthN > 0) begin - if (a_widthN > 1) - \$shiftx #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH(a_widthN), .B_WIDTH($clog2(a_widthN)), .Y_WIDTH(Y_WIDTH)) fpga_soft_mux_last (.A(A[A_WIDTH-1:i*a_width0]), .B(B[$clog2(a_widthN)-1:0]), .Y(T[i])); - else - assign T[i] = A[A_WIDTH-1]; - end - else - assign T[i] = 1'bx; - MUXF7 fpga_hard_mux_0 (.I0(T[0]), .I1(T[1]), .S(B[2]), .O(T0)); - MUXF7 fpga_hard_mux_1 (.I0(T[2]), .I1(T[3]), .S(B[2]), .O(T1)); - MUXF8 fpga_hard_mux_2 (.I0(T0), .I1(T1), .S(B[3]), .O(Y)); - end - else begin - localparam a_width0 = 2 ** 4; - localparam num_mux16 = A_WIDTH / a_width0; - localparam a_widthN = A_WIDTH - num_mux16*a_width0; - wire [(2**(B_WIDTH-4))-1:0] T; - for (i = 0; i < 2 ** (B_WIDTH-4); i++) - if (i < num_mux16) - \$__XILINX_SHIFTX #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH(a_width0), .B_WIDTH(4), .Y_WIDTH(Y_WIDTH)) fpga_soft_mux (.A(A[i*a_width0+:a_width0]), .B(B[4-1:0]), .Y(T[i])); - else if (i == num_mux16 && a_widthN > 0) begin - if (a_widthN > 1) - \$__XILINX_SHIFTX #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH(a_widthN), .B_WIDTH($clog2(a_widthN)), .Y_WIDTH(Y_WIDTH)) fpga_soft_mux_last (.A(A[A_WIDTH-1:i*a_width0]), .B(B[$clog2(a_widthN)-1:0]), .Y(T[i])); - else - assign T[i] = A[A_WIDTH-1]; - end - else - assign T[i] = 1'bx; - \$__XILINX_SHIFTX #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH(2**(B_WIDTH-4)), .B_WIDTH(B_WIDTH-4), .Y_WIDTH(Y_WIDTH)) _TECHMAP_REPLACE_ (.A(T), .B(B[B_WIDTH-1:4]), .Y(Y)); - end - endgenerate -endmodule - -module \$_MUX8_ (A, B, C, D, E, F, G, H, S, T, U, Y); -input A, B, C, D, E, F, G, H, S, T, U; -output Y; - \$__XILINX_SHIFTX #(.A_SIGNED(0), .B_SIGNED(0), .A_WIDTH(8), .B_WIDTH(3), .Y_WIDTH(1)) _TECHMAP_REPLACE_ (.A({H,G,F,E,D,C,B,A}), .B({U,T,S}), .Y(Y)); -endmodule - -module \$_MUX16_ (A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, S, T, U, V, Y); -input A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, S, T, U, V; -output Y; - \$__XILINX_SHIFTX #(.A_SIGNED(0), .B_SIGNED(0), .A_WIDTH(16), .B_WIDTH(4), .Y_WIDTH(1)) _TECHMAP_REPLACE_ (.A({P,O,N,M,L,K,J,I,H,G,F,E,D,C,B,A}), .B({V,U,T,S}), .Y(Y)); -endmodule |