diff options
Diffstat (limited to 'techlibs/xilinx/abc9_model.v')
| -rw-r--r-- | techlibs/xilinx/abc9_model.v | 175 |
1 files changed, 150 insertions, 25 deletions
diff --git a/techlibs/xilinx/abc9_model.v b/techlibs/xilinx/abc9_model.v index 782c53ab6..2d109ef8a 100644 --- a/techlibs/xilinx/abc9_model.v +++ b/techlibs/xilinx/abc9_model.v @@ -24,30 +24,40 @@ // Necessary to make these an atomic unit so that // ABC cannot optimise just one of the MUXF7 away // and expect to save on its delay -(* abc9_box_id = 3, lib_whitebox *) +(* abc9_box, lib_whitebox *) module \$__XILINX_MUXF78 (output O, input I0, I1, I2, I3, S0, S1); assign O = S1 ? (S0 ? I3 : I2) : (S0 ? I1 : I0); -endmodule - -module \$__ABC9_FF_ (input D, output Q); -endmodule - -(* abc9_box_id = (9000+DELAY) *) -module \$__ABC9_DELAY (input I, output O); - parameter DELAY = 0; + specify + (I0 => O) = 294; + (I1 => O) = 297; + (I2 => O) = 311; + (I3 => O) = 317; + (S0 => O) = 390; + (S1 => O) = 273; + endspecify endmodule // Box to emulate async behaviour of FDC* -(* abc9_box_id = 1000, lib_whitebox *) +(* abc9_box, lib_whitebox *) module \$__ABC9_ASYNC0 (input A, S, output Y); assign Y = S ? 1'b0 : A; + specify + (A => Y) = 0; + // https://github.com/SymbiFlow/prjxray-db/blob/23c8b0851f979f0799318eaca90174413a46b257/artix7/timings/slicel.sdf#L270 + (S => Y) = 764; + endspecify endmodule // Box to emulate async behaviour of FDP* -(* abc9_box_id = 1001, lib_whitebox *) +(* abc9_box, lib_whitebox *) module \$__ABC9_ASYNC1 (input A, S, output Y); assign Y = S ? 1'b1 : A; + specify + (A => Y) = 0; + // https://github.com/SymbiFlow/prjxray-db/blob/23c8b0851f979f0799318eaca90174413a46b257/artix7/timings/slicel.sdf#L270 + (S => Y) = 764; + endspecify endmodule // Box to emulate comb/seq behaviour of RAM{32,64} and SRL{16,32} @@ -56,18 +66,37 @@ endmodule // is only committed on the next clock edge). // To model the combinatorial path, such cells have to be split // into comb and seq parts, with this box modelling only the former. -(* abc9_box_id=2000 *) -module \$__ABC9_LUT6 (input A, input [5:0] S, output Y); +(* abc9_box *) +module \$__ABC9_RAM6 (input A, input [5:0] S, output Y); + specify + (A => Y) = 0; + (S[0] => Y) = 642; + (S[1] => Y) = 631; + (S[2] => Y) = 472; + (S[3] => Y) = 407; + (S[4] => Y) = 238; + (S[5] => Y) = 127; + endspecify endmodule // Box to emulate comb/seq behaviour of RAM128 -(* abc9_box_id=2001 *) -module \$__ABC9_LUT7 (input A, input [6:0] S, output Y); +(* abc9_box *) +module \$__ABC9_RAM7 (input A, input [6:0] S, output Y); + specify + (A => Y) = 0; + // https://github.com/SymbiFlow/prjxray-db/blob/1c85daf1b115da4d27ca83c6b89f53a94de39748/artix7/timings/slicel.sdf#L867 + (S[0] => Y) = 642 + 223 /* to cross F7BMUX */ + 174 /* CMUX */; + (S[1] => Y) = 631 + 223 /* to cross F7BMUX */ + 174 /* CMUX */; + (S[2] => Y) = 472 + 223 /* to cross F7BMUX */ + 174 /* CMUX */; + (S[3] => Y) = 407 + 223 /* to cross F7BMUX */ + 174 /* CMUX */; + (S[4] => Y) = 238 + 223 /* to cross F7BMUX */ + 174 /* CMUX */; + (S[5] => Y) = 127 + 223 /* to cross F7BMUX */ + 174 /* CMUX */; + (S[6] => Y) = 0 + 296 /* to select F7BMUX */ + 174 /* CMUX */; + endspecify endmodule -// Boxes used to represent the comb behaviour of various modes -// of DSP48E1 -`define ABC9_DSP48E1(__NAME__) """ -module __NAME__ ( +// Boxes used to represent the comb behaviour of DSP48E1 +(* abc9_box *) +module $__ABC9_DSP48E1 ( input [29:0] $A, input [17:0] $B, input [47:0] $C, @@ -76,10 +105,106 @@ module __NAME__ ( input [47:0] $PCIN, input [47:0] $PCOUT, output [47:0] P, - output [47:0] PCOUT); + output [47:0] PCOUT +); + parameter integer ADREG = 1; + parameter integer AREG = 1; + parameter integer BREG = 1; + parameter integer CREG = 1; + parameter integer DREG = 1; + parameter integer MREG = 1; + parameter integer PREG = 1; + parameter USE_DPORT = "FALSE"; + parameter USE_MULT = "MULTIPLY"; + + function integer \A.P.comb ; + begin + if (USE_MULT == "MULTIPLY" && USE_DPORT == "FALSE") \A.P.comb = 2823; + else if (USE_MULT == "MULTIPLY" && USE_DPORT == "TRUE") \A.P.comb = 3806; + else if (USE_MULT == "NONE" && USE_DPORT == "FALSE") \A.P.comb = 1523; + end + endfunction + function integer \A.PCOUT.comb ; + begin + if (USE_MULT == "MULTIPLY" && USE_DPORT == "FALSE") \A.PCOUT.comb = 2970; + else if (USE_MULT == "MULTIPLY" && USE_DPORT == "TRUE") \A.PCOUT.comb = 3954; + else if (USE_MULT == "NONE" && USE_DPORT == "FALSE") \A.PCOUT.comb = 1671; + end + endfunction + function integer \B.P.comb ; + begin + if (USE_MULT == "MULTIPLY" && USE_DPORT == "FALSE") \B.P.comb = 2690; + else if (USE_MULT == "MULTIPLY" && USE_DPORT == "TRUE") \B.P.comb = 2690; + else if (USE_MULT == "NONE" && USE_DPORT == "FALSE") \B.P.comb = 1509; + end + endfunction + function integer \B.PCOUT.comb ; + begin + if (USE_MULT == "MULTIPLY" && USE_DPORT == "FALSE") \B.PCOUT.comb = 2838; + else if (USE_MULT == "MULTIPLY" && USE_DPORT == "TRUE") \B.PCOUT.comb = 2838; + else if (USE_MULT == "NONE" && USE_DPORT == "FALSE") \B.PCOUT.comb = 1658; + end + endfunction + function integer \C.P.comb ; + begin + if (USE_MULT == "MULTIPLY" && USE_DPORT == "FALSE") \C.P.comb = 1325; + else if (USE_MULT == "MULTIPLY" && USE_DPORT == "TRUE") \C.P.comb = 1325; + else if (USE_MULT == "NONE" && USE_DPORT == "FALSE") \C.P.comb = 1325; + end + endfunction + function integer \C.PCOUT.comb ; + begin + if (USE_MULT == "MULTIPLY" && USE_DPORT == "FALSE") \C.PCOUT.comb = 1474; + else if (USE_MULT == "MULTIPLY" && USE_DPORT == "TRUE") \C.PCOUT.comb = 1474; + else if (USE_MULT == "NONE" && USE_DPORT == "FALSE") \C.PCOUT.comb = 1474; + end + endfunction + function integer \D.P.comb ; + begin + if (USE_MULT == "MULTIPLY" && USE_DPORT == "TRUE") \D.P.comb = 3717; + end + endfunction + function integer \D.PCOUT.comb ; + begin + if (USE_MULT == "MULTIPLY" && USE_DPORT == "TRUE") \D.PCOUT.comb = 3700; + end + endfunction + + specify + ($P *> P) = 0; + ($PCOUT *> PCOUT) = 0; + endspecify + + // Identical comb delays to DSP48E1 in cells_sim.v + generate + if (PREG == 0 && MREG == 0 && AREG == 0 && ADREG == 0) + specify + ($A *> P) = \A.P.comb (); + ($A *> PCOUT) = \A.PCOUT.comb (); + endspecify + + if (PREG == 0 && MREG == 0 && BREG == 0) + specify + ($B *> P) = \B.P.comb (); + ($B *> PCOUT) = \B.PCOUT.comb (); + endspecify + + if (PREG == 0 && CREG == 0) + specify + ($C *> P) = \C.P.comb (); + ($C *> PCOUT) = \C.PCOUT.comb (); + endspecify + + if (PREG == 0 && MREG == 0 && ADREG == 0 && DREG == 0) + specify + ($D *> P) = \D.P.comb (); + ($D *> PCOUT) = \D.PCOUT.comb (); + endspecify + + if (PREG == 0) + specify + ($PCIN *> P) = 1107; + ($PCIN *> PCOUT) = 1255; + endspecify + endgenerate endmodule -""" -(* abc9_box_id=3000 *) `ABC9_DSP48E1($__ABC9_DSP48E1_MULT) -(* abc9_box_id=3001 *) `ABC9_DSP48E1($__ABC9_DSP48E1_MULT_DPORT) -(* abc9_box_id=3002 *) `ABC9_DSP48E1($__ABC9_DSP48E1) -`undef ABC9_DSP48E1 |