/* * yosys -- Yosys Open SYnthesis Suite * * Copyright (C) 2012 Clifford Wolf * 2019 Eddie Hung * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * */ // ============================================================================ // Box containing MUXF7.[AB] + MUXF8, // 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, lib_whitebox *) module \$__XILINX_MUXF78 (output O, input I0, I1, I2, I3, S0, S1); assign O = S1 ? (S0 ? I3 : I2) : (S0 ? I1 : I0); 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, 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, 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} // Necessary since RAMD* and SRL* have both combinatorial (i.e. // same-cycle read operation) and sequential (write operation // 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 *) 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 *) 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 DSP48E1 (* abc9_box *) module $__ABC9_DSP48E1 ( input [29:0] $A, input [17:0] $B, input [47:0] $C, input [24:0] $D, input [47:0] $P, input [47:0] $PCIN, input [47:0] $PCOUT, output [47:0] P, 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 #888888 } /* Generic.Output */ .highlight .gp { color: #555555 } /* Generic.Prompt */ .highlight .gs { font-weight: bold } /* Generic.Strong */ .highlight .gu { color: #666666 } /* Generic.Subheading */ .highlight .gt { color: #aa0000 } /* Generic.Traceback */ .highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */ .highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */ .highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */ .highlight .kp { color: #008800 } /* Keyword.Pseudo */ .highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */ .highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */ .highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */ .highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */ .highlight .na { color: #336699 } /* Name.Attribute */ .highlight .nb { color: #003388 } /* Name.Builtin */ .highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */ .highlight .no { color: #003366; font-weight: bold } /* Name.Constant */ .highlight .nd { color: #555555 } /* Name.Decorator */ .highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */ .highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */ .highlight .nl { color: #336699; font-style: italic } /* Name.Label */ .highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */ .highlight .py { color: #336699; font-weight: bold } /* Name.Property */ .highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */ .highlight .nv { color: #336699 } /* Name.Variable */ .highlight .ow { color: #008800 } /* Operator.Word */ .highlight .w { color: #bbbbbb } /* Text.Whitespace */ .highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */ .highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */ .highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */ .highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */ .highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */ .highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */
/*
    ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

        http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
*/

/**
 * @file    nullstreams.h
 * @brief   Null streams structures and macros.
 
 * @addtogroup null_streams
 * @{
 */

#ifndef NULLSTREAMS_H
#define NULLSTREAMS_H

/*===========================================================================*/
/* Driver constants.                                                         */
/*===========================================================================*/

/*===========================================================================*/
/* Driver pre-compile time settings.                                         */
/*===========================================================================*/

/*===========================================================================*/
/* Derived constants and error checks.                                       */
/*===========================================================================*/

/*===========================================================================*/
/* Driver data structures and types.                                         */
/*===========================================================================*/

/**
 * @brief   @p NullStream specific data.
 */
#define _null_stream_data                                                   \
  _base_sequential_stream_data

/**
 * @brief   @p NullStream virtual methods table.
 */
struct NullStreamVMT {
  _base_sequential_stream_methods
};

/**
 * @extends BaseSequentialStream
 *
 * @brief   Null stream object.
 */
typedef struct {
  /** @brief Virtual Methods Table.*/
  const struct NullStreamVMT *vmt;
  _null_stream_data
} NullStream;

/*===========================================================================*/
/* Driver macros.                                                            */
/*===========================================================================*/

/*===========================================================================*/
/* External declarations.                                                    */
/*===========================================================================*/

#ifdef __cplusplus
extern "C" {
#endif
  void nullObjectInit(NullStream *nsp);
#ifdef __cplusplus
}
#endif

#endif /* NULLSTREAMS_H */

/** @} */
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-23 11:10:58 +0000