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CoveragePkg.vhd
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--
-- File Name: CoveragePkg.vhd
-- Design Unit Name: CoveragePkg
-- Revision: STANDARD VERSION, revision 2014.01
--
-- Maintainer: Jim Lewis email: [email protected]
-- Contributor(s):
-- Jim Lewis SynthWorks
-- Matthias Alles Creonic. Inspired GetMinBinVal, GetMinPoint, GetCov
-- Jerry Kaczynski Aldec. Inspired GetBin function
--
--
-- Package Defines
-- Functional coverage modeling utilities and data structure
--
-- Developed for:
-- SynthWorks Design Inc.
-- VHDL Training Classes
-- 11898 SW 128th Ave. Tigard, Or 97223
-- http://www.SynthWorks.com
--
-- Latest standard version available at:
-- http://www.SynthWorks.com/downloads
--
-- Revision History: See also CoveragePkg_release_notes.pdf
-- Date Version Description
-- 06/2010: 0.1 Initial revision
-- 09/2010 Release in SynthWorks' VHDL Testbenches and Verification classes
-- 02/2011: 1.0 Requires VHDL-2008 types integer_vector and boolean_vecctor
-- Changed CoverBinType to facilitage long term support of cross coverage
-- 02/2011: 1.1 Added GetMinCov, GetMaxCov, CountCovHoles, GetCovHole
-- 04/2011: 2.0 Added protected type based data structure: CovPType
-- 06/2011: 2.1 Removed signal based coverage modeling
-- 07/2011: 2.2 Added randomization with coverage goals (AtLeast), weight, and percentage thresholds
-- Revised RandCovPoint, RandCovBinVal, AddBins, AddCross, GenBin, Added SetWeightMode
-- Randomization with weights/weight modes
-- Cleaned up parameter naming
-- 11/2011: 2.2a Changed constants ALL_RANGE, ZERO_BIN, and ONE_BIN to have a 1 index
-- rather than 0 to match the range of BinVal
-- 12/2011: 2.2b Fixed minor inconsistencies on interface declarations.
-- Package RandomPkg is assumed to be in the same library as CoveragePkg
-- 01/2012: 2.3 Added Function GetBin from Jerry K.
-- Made write for RangeArrayType visible
-- 01/2012: 2.4
-- Revised AddBins and AddCross to handle merging and deletion for overlapping bins
-- Note merging is an experimental feature.
-- Renamed RandCovHole to RandCovBinVal - maintained old version calls new
-- Renamed GetCovHole to GetHoleBinVal - maintained old version calls new
-- 04/2013: 2013.04
-- Revised AddBins and AddCross s.t. bin merging is off by default.
-- Added SetMerging to enable/disable merging.
-- Note: Merging is an experimental feature and still evolving.
-- Revised AddBins and AddCross to check for changes in BinVal size (different size bin).
-- Added RandCovPoint for integer.
-- Added SetThresholding and SetCovThreshold(Percent) to enable/disable(default) thresholding.
-- Revised RandCovPoint and RandCovBinVal to use new mechanism.
-- Added SetCovTarget to increase/decrease coverage goals for longer/shorter simulation runs.
-- Made CovTarget the default percentage goal (via overloading) for methods RandCovPoint,
-- RandCovBinVal, IsCovered, CountCovHoles, GetHoleBinVal, and WriteCovHoles
-- Revised SetIllegalMode and ICover to support ILLEGAL_FAILURE (severity FAILURE on illegal bin).
-- Added manual bin iteration support.
-- BinIndex: GetNumBins, GetMinIndex, GetMaxIndex
-- BinVal: GetBinVal(BinIndex), GetMinBinVal, GetMaxBinVal
-- Point: GetPoint (BinIndex), GetMinPoint, GetMaxPoint
-- Added GetCov to return the current percent done of the entire coverage model.
-- Added FileOpenWriteBin and FileCloseWriteBin to specify default file for WriteBin, WriteCovHoles, and DumpBin
-- Added CompareBins to facilitate comparing two coverage models.
-- Revised WriteBin, WriteCovHoles, and WriteCovDb to check for uninitialized model.
-- Revised WriteBins and WriteCovHoles to only print weight if the selected WeightMode uses the weight.
-- Added IsInitialized to check if a coverage model is initialized.
-- Added GetBinInfo and GetBinValLength to get bin information
-- Changed WriteCovDb default for File_Open_Kind to WRITE_MODE
-- Revised WriteCovDb and ReadCovDb for new internal control/state variables
-- Removed IgnoreBin with AtLeast and Weight parameters. These are zero for ignore bins.
-- Revised method naming for consistency. The following have changed:
-- New Name Old Name Why
-- CovBinErrCnt GetErrorCount Consistency between packages
-- GetMinCount GetMinCov[return integer] Naming clarity
-- GetMaxCount GetMaxCov[return integer] Naming clarity
-- SetName SetItemName SetName now does multi-line messages
-- Deprecated usage of the AtLeast parameter (integer) with the following methods:
-- RandCovPoint, RandCovBinVal, IsCovered, CountCovHoles,
-- GetHoleBinVal, and WriteCovHoles.
-- 5/2013 2013.05
-- No changes of substance.
-- Removed extra variable declaration in functions GetHoleBinval,
-- RandCovBinVal, RandCovHole, GetHoleBinVal
-- Using work.RandomPkg.NULL_RANGE_TYPE to remove NULL range warnings
-- 1/2014 2014.01
-- Revised ReadCovDb to support merging of coverage models
-- Revised RandCovPoint and RandCovBinVal to log the bin index in the LastIndex variable
-- Revised ICover to look in bin referenced by LastIndex first
-- Added GetLastIndex and GetLastBinVal
-- Revised AddBins and AddCross bin merging to allow arbitrary CountBin overlap (facilitated by LastIndex)
-- Note: Merging is an experimental feature and still evolving.
-- Split SetName into SetMessage (headers) and SetName (printing illegal bins)
-- Added methods GetItemCount and GetTotalCovGoal
-- Revised GetCov to use CovTarget and overloaded to use a PercentCov parameter.
--
-- Development Notes:
-- The coverage procedures are named ICover to avoid conflicts with
-- future language changes which may add cover as a keyword
-- Procedure WriteBin writes each CovBin on a separate line, as such
-- it was inappropriate to overload either textio write or to_string
-- In the notes VHDL-2008 notes refers to
-- composites with unconstrained elements
--
--
-- Copyright (c) 2010 - 2013 by SynthWorks Design Inc. All rights reserved.
--
-- Verbatim copies of this source file may be used and
-- distributed without restriction.
--
-- This source file is free software; you can redistribute it
-- and/or modify it under the terms of the ARTISTIC License
-- as published by The Perl Foundation; either version 2.0 of
-- the License, or (at your option) any later version.
--
-- This source is distributed in the hope that it will be
-- useful, but WITHOUT ANY WARRANTY; without even the implied
-- warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
-- PURPOSE. See the Artistic License for details.
--
-- You should have received a copy of the license with this source.
-- If not download it from,
-- http://www.perlfoundation.org/artistic_license_2_0
--
-- Credits:
-- CovBinBaseType is inspired by a structure proposed in the
-- paper "Functional Coverage - without SystemVerilog!"
-- by Alan Fitch and Doug Smith. Presented at DVCon 2010
-- However the approach in their paper uses entities and
-- architectures where this approach relies on functions
-- and procedures, so the usage models differ greatly however.
--
library ieee ;
use ieee.std_logic_1164.all ;
use ieee.numeric_std.all ;
use ieee.math_real.all ;
use std.textio.all ;
-- comment out following 2 lines with VHDL-2008. Leave in for VHDL-2002
-- library ieee_proposed ; -- remove with VHDL-2008
-- use ieee_proposed.standard_additions.all ; -- remove with VHDL-2008
use work.RandomBasePkg.all ;
use work.RandomPkg.all ;
use work.MessagePkg.all ;
package CoveragePkg is
-- CovPType allocates bins that are multiples of MIN_NUM_BINS
constant MIN_NUM_BINS : integer := 2**7 ; -- power of 2
type RangeType is record
min : integer ;
max : integer ;
end record ;
type RangeArrayType is array (integer range <>) of RangeType ;
constant ALL_RANGE : RangeArrayType := (1=>(Integer'left, Integer'right)) ;
procedure write ( file f : text ; BinVal : RangeArrayType ) ;
procedure write ( variable buf : inout line ; constant BinVal : in RangeArrayType) ;
-- CovBinBaseType.action values.
-- Note that coverage counting depends on these values
constant COV_COUNT : integer := 1 ;
constant COV_IGNORE : integer := 0 ;
constant COV_ILLEGAL : integer := -1 ;
-- Used for easy manual entry. Order: min, max, action
-- Intentionally did not use a record to allow other input
-- formats in the future with VHDL-2008 unconstrained arrays
-- of unconstrained elements
type CovBinManualType is array (natural range <>) of integer_vector(0 to 2) ;
type CovBinBaseType is record
BinVal : RangeArrayType(1 to 1) ;
Action : integer ;
Count : integer ;
AtLeast : integer ;
Weight : integer ;
end record ;
type CovBinType is array (natural range <>) of CovBinBaseType ;
constant ALL_BIN : CovBinType := (0 => ( BinVal => ALL_RANGE, Action => COV_COUNT, Count => 0, AtLeast => 1, Weight => 1 )) ;
constant ALL_COUNT : CovBinType := (0 => ( BinVal => ALL_RANGE, Action => COV_COUNT, Count => 0, AtLeast => 1, Weight => 1 )) ;
constant ALL_ILLEGAL : CovBinType := (0 => ( BinVal => ALL_RANGE, Action => COV_ILLEGAL, Count => 0, AtLeast => 0, Weight => 0 )) ;
constant ALL_IGNORE : CovBinType := (0 => ( BinVal => ALL_RANGE, Action => COV_IGNORE, Count => 0, AtLeast => 0, Weight => 0 )) ;
constant ZERO_BIN : CovBinType := (0 => ( BinVal => (1=>(0,0)), Action => COV_COUNT, Count => 0, AtLeast => 1, Weight => 1 )) ;
constant ONE_BIN : CovBinType := (0 => ( BinVal => (1=>(1,1)), Action => COV_COUNT, Count => 0, AtLeast => 1, Weight => 1 )) ;
constant NULL_BIN : CovBinType(work.RandomPkg.NULL_RANGE_TYPE) := (others => ( BinVal => ALL_RANGE, Action => integer'high, Count => 0, AtLeast => integer'high, Weight => integer'high )) ;
type CountModeType is (COUNT_FIRST, COUNT_ALL) ;
type IllegalModeType is (ILLEGAL_ON, ILLEGAL_FAILURE, ILLEGAL_OFF) ;
type WeightModeType is (AT_LEAST, WEIGHT, REMAIN, REMAIN_EXP, REMAIN_SCALED, REMAIN_WEIGHT ) ;
-- In VHDL-2008 CovMatrix?BaseType and CovMatrix?Type will be subsumed
-- by CovBinBaseType and CovBinType with RangeArrayType as an unconstrained array.
type CovMatrix2BaseType is record
BinVal : RangeArrayType(1 to 2) ;
Action : integer ;
Count : integer ;
AtLeast : integer ;
Weight : integer ;
end record ;
type CovMatrix2Type is array (natural range <>) of CovMatrix2BaseType ;
type CovMatrix3BaseType is record
BinVal : RangeArrayType(1 to 3) ;
Action : integer ;
Count : integer ;
AtLeast : integer ;
Weight : integer ;
end record ;
type CovMatrix3Type is array (natural range <>) of CovMatrix3BaseType ;
type CovMatrix4BaseType is record
BinVal : RangeArrayType(1 to 4) ;
Action : integer ;
Count : integer ;
AtLeast : integer ;
Weight : integer ;
end record ;
type CovMatrix4Type is array (natural range <>) of CovMatrix4BaseType ;
type CovMatrix5BaseType is record
BinVal : RangeArrayType(1 to 5) ;
Action : integer ;
Count : integer ;
AtLeast : integer ;
Weight : integer ;
end record ;
type CovMatrix5Type is array (natural range <>) of CovMatrix5BaseType ;
type CovMatrix6BaseType is record
BinVal : RangeArrayType(1 to 6) ;
Action : integer ;
Count : integer ;
AtLeast : integer ;
Weight : integer ;
end record ;
type CovMatrix6Type is array (natural range <>) of CovMatrix6BaseType ;
type CovMatrix7BaseType is record
BinVal : RangeArrayType(1 to 7) ;
Action : integer ;
Count : integer ;
AtLeast : integer ;
Weight : integer ;
end record ;
type CovMatrix7Type is array (natural range <>) of CovMatrix7BaseType ;
type CovMatrix8BaseType is record
BinVal : RangeArrayType(1 to 8) ;
Action : integer ;
Count : integer ;
AtLeast : integer ;
Weight : integer ;
end record ;
type CovMatrix8Type is array (natural range <>) of CovMatrix8BaseType ;
type CovMatrix9BaseType is record
BinVal : RangeArrayType(1 to 9) ;
Action : integer ;
Count : integer ;
AtLeast : integer ;
Weight : integer ;
end record ;
type CovMatrix9Type is array (natural range <>) of CovMatrix9BaseType ;
------------------------------------------------------------
function ToMinPoint (A : RangeArrayType) return integer ;
function ToMinPoint (A : RangeArrayType) return integer_vector ;
-- BinVal to Minimum Point
------------------------------------------------------------
procedure ToRandPoint(
-- BinVal to Random Point
-- better as a function, however, inout not supported on functions
------------------------------------------------------------
variable RV : inout RandomPType ;
constant BinVal : in RangeArrayType ;
variable result : out integer
) ;
------------------------------------------------------------
procedure ToRandPoint(
-- BinVal to Random Point
------------------------------------------------------------
variable RV : inout RandomPType ;
constant BinVal : in RangeArrayType ;
variable result : out integer_vector
) ;
------------------------------------------------------------------------------------------
-- XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX CovPType XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
-- XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX CovPType XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
-- XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX CovPType XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
------------------------------------------------------------------------------------------
type CovPType is protected
procedure FileOpenWriteBin (FileName : string; OpenKind : File_Open_Kind ) ;
procedure FileCloseWriteBin ;
-- procedure FileOpenWriteCovDb (FileName : string; OpenKind : File_Open_Kind ) ;
-- procedure FileCloseWriteCovDb ;
procedure SetIllegalMode (A : IllegalModeType) ;
procedure SetWeightMode (A : WeightModeType; Scale : real := 1.0) ;
procedure SetName (NameIn : String) ;
procedure SetMessage (MessageIn : String) ;
procedure DeallocateName ; -- clear name
procedure DeallocateMessage ; -- clear message
procedure SetThresholding(A : boolean := TRUE ) ; -- 2.5
procedure SetCovThreshold (Percent : real) ;
procedure SetCovTarget (Percent : real) ; -- 2.5
impure function GetCovTarget return real ; -- 2.5
procedure SetMerging(A : boolean := TRUE ) ; -- 2.5
procedure SetCountMode (A : CountModeType) ;
procedure InitSeed (S : string ) ;
procedure InitSeed (I : integer ) ;
procedure SetSeed (RandomSeedIn : RandomSeedType ) ;
impure function GetSeed return RandomSeedType ;
procedure SetBinSize (NewNumBins : integer) ;
------------------------------------------------------------
procedure AddBins (
AtLeast : integer ;
Weight : integer ;
CovBin : CovBinType
) ;
procedure AddBins (AtLeast : integer ; CovBin : CovBinType) ;
procedure AddBins (CovBin : CovBinType) ;
------------------------------------------------------------
procedure AddCross(
AtLeast : integer ;
Weight : integer ;
Bin1, Bin2 : CovBinType ;
Bin3, Bin4, Bin5, Bin6, Bin7, Bin8, Bin9, Bin10, Bin11, Bin12, Bin13,
Bin14, Bin15, Bin16, Bin17, Bin18, Bin19, Bin20 : CovBinType := NULL_BIN
) ;
------------------------------------------------------------
procedure AddCross(
AtLeast : integer ;
Bin1, Bin2 : CovBinType ;
Bin3, Bin4, Bin5, Bin6, Bin7, Bin8, Bin9, Bin10, Bin11, Bin12, Bin13,
Bin14, Bin15, Bin16, Bin17, Bin18, Bin19, Bin20 : CovBinType := NULL_BIN
) ;
------------------------------------------------------------
procedure AddCross(
Bin1, Bin2 : CovBinType ;
Bin3, Bin4, Bin5, Bin6, Bin7, Bin8, Bin9, Bin10, Bin11, Bin12, Bin13,
Bin14, Bin15, Bin16, Bin17, Bin18, Bin19, Bin20 : CovBinType := NULL_BIN
) ;
procedure Deallocate ;
procedure ICoverLast ;
procedure ICover( CovPoint : integer) ;
procedure ICover( CovPoint : integer_vector) ;
procedure SetCovZero ;
impure function IsInitialized return boolean ;
impure function GetNumBins return integer ;
impure function GetMinIndex return integer ;
impure function GetMinCov return real ; -- PercentCov
impure function GetMinCount return integer ; -- Count
impure function GetMaxIndex return integer ;
impure function GetMaxCov return real ; -- PercentCov
impure function GetMaxCount return integer ; -- Count
impure function CountCovHoles ( PercentCov : real ) return integer ;
impure function CountCovHoles return integer ;
impure function IsCovered return boolean ;
impure function IsCovered ( PercentCov : real ) return boolean ;
impure function GetCov ( PercentCov : real ) return real ;
impure function GetCov return real ; -- PercentCov of entire model/all bins
impure function GetItemCount return integer ;
impure function GetTotalCovGoal ( PercentCov : real ) return integer ;
impure function GetTotalCovGoal return integer ;
impure function GetLastIndex return integer ;
-- Return BinVal
impure function GetBinVal ( BinIndex : integer ) return RangeArrayType ;
impure function GetLastBinVal return RangeArrayType ;
impure function RandCovBinVal ( PercentCov : real ) return RangeArrayType ;
impure function RandCovBinVal return RangeArrayType ;
impure function GetMinBinVal return RangeArrayType ;
impure function GetMaxBinVal return RangeArrayType ;
impure function GetHoleBinVal ( ReqHoleNum : integer ; PercentCov : real ) return RangeArrayType ;
impure function GetHoleBinVal ( PercentCov : real ) return RangeArrayType ;
impure function GetHoleBinVal ( ReqHoleNum : integer := 1 ) return RangeArrayType ;
-- Return Points
impure function RandCovPoint return integer ;
impure function RandCovPoint ( PercentCov : real ) return integer ;
impure function RandCovPoint return integer_vector ;
impure function RandCovPoint ( PercentCov : real ) return integer_vector ;
impure function GetPoint ( BinIndex : integer ) return integer ;
impure function GetPoint ( BinIndex : integer ) return integer_vector ;
impure function GetMinPoint return integer ;
impure function GetMinPoint return integer_vector ;
impure function GetMaxPoint return integer ;
impure function GetMaxPoint return integer_vector ;
-- GetBin returns an internal value of the coverage data structure
-- The return value may change as the package evolves
-- Use it only for debugging.
-- GetBinInfo is a for development only.
impure function GetBinInfo ( BinIndex : integer ) return CovBinBaseType ;
impure function GetBinValLength return integer ;
impure function GetBin ( BinIndex : integer ) return CovBinBaseType ;
impure function GetBin ( BinIndex : integer ) return CovMatrix2BaseType ;
impure function GetBin ( BinIndex : integer ) return CovMatrix3BaseType ;
impure function GetBin ( BinIndex : integer ) return CovMatrix4BaseType ;
impure function GetBin ( BinIndex : integer ) return CovMatrix5BaseType ;
impure function GetBin ( BinIndex : integer ) return CovMatrix6BaseType ;
impure function GetBin ( BinIndex : integer ) return CovMatrix7BaseType ;
impure function GetBin ( BinIndex : integer ) return CovMatrix8BaseType ;
impure function GetBin ( BinIndex : integer ) return CovMatrix9BaseType ;
-- procedure WriteBin ( file f : text ) ;
procedure WriteBin ;
procedure WriteBin ( FileName : string; OpenKind : File_Open_Kind := APPEND_MODE ) ;
procedure WriteCovHoles ;
procedure WriteCovHoles ( PercentCov : real ) ;
procedure WriteCovHoles ( FileName : string; OpenKind : File_Open_Kind := APPEND_MODE ) ;
procedure WriteCovHoles ( FileName : string; PercentCov : real ; OpenKind : File_Open_Kind := APPEND_MODE ) ;
procedure DumpBin ; -- Development only
procedure ReadCovDb (FileName : string; Merge : boolean := FALSE) ;
procedure WriteCovDb (FileName : string; OpenKind : File_Open_Kind := WRITE_MODE ) ;
impure function GetErrorCount return integer ;
-- These support usage of cross coverage constants
-- Also support the older AddBins(GenCross(...)) methodology
-- which has been replaced by AddCross
procedure AddBins (CovBin : CovMatrix2Type) ;
procedure AddBins (CovBin : CovMatrix3Type) ;
procedure AddBins (CovBin : CovMatrix4Type) ;
procedure AddBins (CovBin : CovMatrix5Type) ;
procedure AddBins (CovBin : CovMatrix6Type) ;
procedure AddBins (CovBin : CovMatrix7Type) ;
procedure AddBins (CovBin : CovMatrix8Type) ;
procedure AddBins (CovBin : CovMatrix9Type) ;
------------------------------------------------------------
-- Remaining are Deprecated
--
-- Deprecated. Replaced by SetName with multi-line support
procedure SetItemName (ItemNameIn : String) ; -- deprecated
-- Deprecated. Consistency across packages
impure function CovBinErrCnt return integer ;
-- Deprecated. Due to name changes to promote greater consistency
-- Maintained for backward compatibility.
-- RandCovHole replaced by RandCovBinVal
impure function RandCovHole ( PercentCov : real ) return RangeArrayType ; -- Deprecated
impure function RandCovHole return RangeArrayType ; -- Deprecated
-- GetCovHole replaced by GetHoleBinVal
impure function GetCovHole ( ReqHoleNum : integer ; PercentCov : real ) return RangeArrayType ;
impure function GetCovHole ( PercentCov : real ) return RangeArrayType ;
impure function GetCovHole ( ReqHoleNum : integer := 1 ) return RangeArrayType ;
-- Deprecated/ Subsumed by versions with PercentCov Parameter
-- Maintained for backward compatibility only and
-- may be removed in the future.
impure function GetMinCov return integer ;
impure function GetMaxCov return integer ;
impure function CountCovHoles ( AtLeast : integer ) return integer ;
impure function IsCovered ( AtLeast : integer ) return boolean ;
impure function RandCovBinVal ( AtLeast : integer ) return RangeArrayType ;
impure function RandCovHole ( AtLeast : integer ) return RangeArrayType ; -- Deprecated
impure function RandCovPoint (AtLeast : integer ) return integer ;
impure function RandCovPoint (AtLeast : integer ) return integer_vector ;
impure function GetHoleBinVal ( ReqHoleNum : integer ; AtLeast : integer ) return RangeArrayType ;
impure function GetCovHole ( ReqHoleNum : integer ; AtLeast : integer ) return RangeArrayType ;
procedure WriteCovHoles ( AtLeast : integer ) ;
procedure WriteCovHoles ( FileName : string; AtLeast : integer ; OpenKind : File_Open_Kind := APPEND_MODE ) ;
end protected CovPType ;
------------------------------------------------------------------------------------------
-- XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX CovPType XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
-- XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX CovPType XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
------------------------------------------------------------------------------------------
------------------------------------------------------------
-- Experimental. Intended primarily for development.
procedure CompareBins (
------------------------------------------------------------
variable Bin1 : inout CovPType ;
variable Bin2 : inout CovPType ;
variable ErrorCount : inout integer
) ;
--
-- Support for AddBins and AddCross
--
------------------------------------------------------------
function GenBin(
------------------------------------------------------------
AtLeast : integer ;
Weight : integer ;
Min, Max : integer ;
NumBin : integer
) return CovBinType ;
-- Each item in range in a separate CovBin
function GenBin(AtLeast : integer ; Min, Max, NumBin : integer ) return CovBinType ;
function GenBin(Min, Max, NumBin : integer ) return CovBinType ;
function GenBin(Min, Max : integer) return CovBinType ;
function GenBin(A : integer) return CovBinType ;
------------------------------------------------------------
function IllegalBin ( Min, Max, NumBin : integer ) return CovBinType ;
------------------------------------------------------------
-- All items in range in a single CovBin
function IllegalBin ( Min, Max : integer ) return CovBinType ;
function IllegalBin ( A : integer ) return CovBinType ;
----------------------------------------------------------
-- function IgnoreBin (
----------------------------------------------------------
-- AtLeast : integer ;
-- Weight : integer ;
-- Min, Max : integer ;
-- NumBin : integer
-- ) return CovBinType ;
-- function IgnoreBin (AtLeast : integer ; Min, Max, NumBin : integer) return CovBinType ;
-- All items in range in a single CovBin
------------------------------------------------------------
function IgnoreBin (Min, Max, NumBin : integer) return CovBinType ;
------------------------------------------------------------
function IgnoreBin (Min, Max : integer) return CovBinType ;
function IgnoreBin (A : integer) return CovBinType ;
------------------------------------------------------------
function GenBin (
-- Manual entry format for CovBin within lots of extra parens
------------------------------------------------------------
ManualBin : CovBinManualType
) return CovBinType ;
-- With VHDL-2008, there will be one GenCross that returns CovBinType
-- and has inputs initialized to NULL_BIN - see AddCross
------------------------------------------------------------
function GenCross( -- 2
-- Cross existing bins
-- Use AddCross for adding values directly to coverage database
-- Use GenCross for constants
------------------------------------------------------------
AtLeast : integer ;
Weight : integer ;
Bin1, Bin2 : CovBinType
) return CovMatrix2Type ;
function GenCross(AtLeast : integer ; Bin1, Bin2 : CovBinType) return CovMatrix2Type ;
function GenCross(Bin1, Bin2 : CovBinType) return CovMatrix2Type ;
------------------------------------------------------------
function GenCross( -- 3
------------------------------------------------------------
AtLeast : integer ;
Weight : integer ;
Bin1, Bin2, Bin3 : CovBinType
) return CovMatrix3Type ;
function GenCross( AtLeast : integer ; Bin1, Bin2, Bin3 : CovBinType ) return CovMatrix3Type ;
function GenCross( Bin1, Bin2, Bin3 : CovBinType ) return CovMatrix3Type ;
------------------------------------------------------------
function GenCross( -- 4
------------------------------------------------------------
AtLeast : integer ;
Weight : integer ;
Bin1, Bin2, Bin3, Bin4 : CovBinType
) return CovMatrix4Type ;
function GenCross( AtLeast : integer ; Bin1, Bin2, Bin3, Bin4 : CovBinType ) return CovMatrix4Type ;
function GenCross( Bin1, Bin2, Bin3, Bin4 : CovBinType ) return CovMatrix4Type ;
------------------------------------------------------------
function GenCross( -- 5
------------------------------------------------------------
AtLeast : integer ;
Weight : integer ;
Bin1, Bin2, Bin3, Bin4, Bin5 : CovBinType
) return CovMatrix5Type ;
function GenCross( AtLeast : integer ; Bin1, Bin2, Bin3, Bin4, Bin5 : CovBinType ) return CovMatrix5Type ;
function GenCross( Bin1, Bin2, Bin3, Bin4, Bin5 : CovBinType ) return CovMatrix5Type ;
------------------------------------------------------------
function GenCross( -- 6
------------------------------------------------------------
AtLeast : integer ;
Weight : integer ;
Bin1, Bin2, Bin3, Bin4, Bin5, Bin6 : CovBinType
) return CovMatrix6Type ;
function GenCross( AtLeast : integer ; Bin1, Bin2, Bin3, Bin4, Bin5, Bin6 : CovBinType ) return CovMatrix6Type ;
function GenCross( Bin1, Bin2, Bin3, Bin4, Bin5, Bin6 : CovBinType ) return CovMatrix6Type ;
------------------------------------------------------------
function GenCross( -- 7
------------------------------------------------------------
AtLeast : integer ;
Weight : integer ;
Bin1, Bin2, Bin3, Bin4, Bin5, Bin6, Bin7 : CovBinType
) return CovMatrix7Type ;
function GenCross( AtLeast : integer ; Bin1, Bin2, Bin3, Bin4, Bin5, Bin6, Bin7 : CovBinType ) return CovMatrix7Type ;
function GenCross( Bin1, Bin2, Bin3, Bin4, Bin5, Bin6, Bin7 : CovBinType ) return CovMatrix7Type ;
------------------------------------------------------------
function GenCross( -- 8
------------------------------------------------------------
AtLeast : integer ;
Weight : integer ;
Bin1, Bin2, Bin3, Bin4, Bin5, Bin6, Bin7, Bin8 : CovBinType
) return CovMatrix8Type ;
function GenCross( AtLeast : integer ; Bin1, Bin2, Bin3, Bin4, Bin5, Bin6, Bin7, Bin8 : CovBinType ) return CovMatrix8Type ;
function GenCross( Bin1, Bin2, Bin3, Bin4, Bin5, Bin6, Bin7, Bin8 : CovBinType ) return CovMatrix8Type ;
------------------------------------------------------------
function GenCross( -- 9
------------------------------------------------------------
AtLeast : integer ;
Weight : integer ;
Bin1, Bin2, Bin3, Bin4, Bin5, Bin6, Bin7, Bin8, Bin9 : CovBinType
) return CovMatrix9Type ;
function GenCross( AtLeast : integer ; Bin1, Bin2, Bin3, Bin4, Bin5, Bin6, Bin7, Bin8, Bin9 : CovBinType ) return CovMatrix9Type ;
function GenCross( Bin1, Bin2, Bin3, Bin4, Bin5, Bin6, Bin7, Bin8, Bin9 : CovBinType ) return CovMatrix9Type ;
------------------------------------------------------------
procedure increment( signal Count : inout integer ) ;
procedure increment( signal Count : inout integer ; enable : boolean ) ;
procedure increment( signal Count : inout integer ; enable : std_ulogic ) ;
------------------------------------------------------------
-- Utilities. Remove if added to std.standard
function to_integer ( B : boolean ) return integer ;
function to_integer ( SL : std_logic ) return integer ;
function to_integer_vector ( BV : boolean_vector ) return integer_vector ;
function to_integer_vector ( SLV : std_logic_vector ) return integer_vector ;
end package CoveragePkg ;
--- //////////////////////////////////////////////////////////////////////////////////////////////
--- //////////////////////////////////////////////////////////////////////////////////////////////
package body CoveragePkg is
------------------------------------------------------------
function inside (
-- package local
------------------------------------------------------------
CovPoint : integer ;
BinVal : RangeType
) return boolean is
begin
return CovPoint >= BinVal.min and CovPoint <= BinVal.max ;
end function inside ;
------------------------------------------------------------
function inside (
-- package local
------------------------------------------------------------
CovPoint : integer_vector ;
BinVal : RangeArrayType
) return boolean is
alias iCovPoint : integer_vector(BinVal'range) is CovPoint ;
begin
for i in BinVal'range loop
if not (iCovPoint(i) >= BinVal(i).min and iCovPoint(i) <= BinVal(i).max) then
return FALSE ;
end if ;
end loop ;
return TRUE ;
end function inside ;
------------------------------------------------------------
function inside (
-- package local, used by InsertBin
-- True when BinVal1 is inside BinVal2
------------------------------------------------------------
BinVal1 : RangeArrayType ;
BinVal2 : RangeArrayType
) return boolean is
alias iBinVal2 : RangeArrayType(BinVal1'range) is BinVal2 ;
begin
for i in BinVal1'range loop
if not (BinVal1(i).min >= iBinVal2(i).min and BinVal1(i).max <= iBinVal2(i).max) then
return FALSE ;
end if ;
end loop ;
return TRUE ;
end function inside ;
------------------------------------------------------------
procedure write (
variable buf : inout line ;
CovPoint : integer_vector
) is
-- package local. called by ICover
------------------------------------------------------------
alias iCovPoint : integer_vector(1 to CovPoint'length) is CovPoint ;
begin
write(buf, "(" & integer'image(iCovPoint(1)) ) ;
for i in 2 to iCovPoint'right loop
write(buf, "," & integer'image(iCovPoint(i)) ) ;
end loop ;
swrite(buf, ")") ;
end procedure write ;
------------------------------------------------------------
procedure write ( file f : text ; BinVal : RangeArrayType ) is
-- called by WriteBin and WriteCovHoles
------------------------------------------------------------
begin
for i in BinVal'range loop
if BinVal(i).min = BinVal(i).max then
write(f, "(" & integer'image(BinVal(i).min) & ") " ) ;
elsif (BinVal(i).min = integer'left) and (BinVal(i).max = integer'right) then
write(f, "(ALL) " ) ;
else
write(f, "(" & integer'image(BinVal(i).min) & " to " &
integer'image(BinVal(i).max) & ") " ) ;
end if ;
end loop ;
end procedure write ;
------------------------------------------------------------
procedure write (
-- called by WriteBin and WriteCovHoles
------------------------------------------------------------
variable buf : inout line ;
constant BinVal : in RangeArrayType
) is
------------------------------------------------------------
begin
for i in BinVal'range loop
if BinVal(i).min = BinVal(i).max then
write(buf, "(" & integer'image(BinVal(i).min) & ") " ) ;
elsif (BinVal(i).min = integer'left) and (BinVal(i).max = integer'right) then
swrite(buf, "(ALL) " ) ;
else
write(buf, "(" & integer'image(BinVal(i).min) & " to " &
integer'image(BinVal(i).max) & ") " ) ;
end if ;
end loop ;
end procedure write ;
------------------------------------------------------------
procedure WriteBinVal (
-- package local for now
------------------------------------------------------------
variable buf : inout line ;
constant BinVal : in RangeArrayType
) is
begin
for i in BinVal'range loop
write(buf, BinVal(i).min) ;
write(buf, ' ') ;
write(buf, BinVal(i).max) ;
write(buf, ' ') ;
end loop ;
end procedure WriteBinVal ;
------------------------------------------------------------
-- package local
function failed (InValid : boolean ; Message : string := " ") return boolean is
-- Move to TextUtilPkg and make visible?
------------------------------------------------------------
begin
if InValid then
report Message severity failure ;
end if ;
return InValid ;
end function failed ;
------------------------------------------------------------
-- package local
procedure EmptyOrCommentLine (
-- Better as Function, but not supported in VHDL functions
------------------------------------------------------------
variable L : InOut line ;
variable Empty : out boolean
) is
variable Valid : boolean ;
variable Char : character ;
constant NBSP : CHARACTER := CHARACTER'val(160); -- space character
begin
Empty := TRUE ;
-- if line empty (null or 0 length), Empty = TRUE
if L = null or L.all'length = 0 then
return ;
end if ;
-- if line starts with '#', empty = TRUE
if L.all(1) = '#' then
return ;
end if ;
-- if line starts with '--', empty = TRUE
if L.all'length >= 2 and L.all(1) = '-' and L.all(2) = '-' then
return ;
end if ;
-- Otherwise, remove white space and check for end of line
-- Code borrowed from David Bishop, skip_whitespace
WhiteSpLoop : while L /= null and L.all'length > 0 loop
if (L.all(1) = ' ' or L.all(1) = NBSP or L.all(1) = HT) then
read (L, Char, Valid) ;
else
Empty := FALSE ;
exit WhiteSpLoop ;
end if ;
end loop WhiteSpLoop ;
end procedure EmptyOrCommentLine ;
------------------------------------------------------------
-- package local for now
procedure read (
-- if public, also create one that does not use valid flag
------------------------------------------------------------
variable buf : inout line ;
variable BinVal : out RangeArrayType ;
variable Valid : out boolean
) is
variable ReadValid : boolean ;
begin
for i in BinVal'range loop
read(buf, BinVal(i).min, ReadValid) ;
exit when not ReadValid ;
read(buf, BinVal(i).max, ReadValid) ;
exit when not ReadValid ;
end loop ;
Valid := ReadValid ;
end procedure read ;
-- ------------------------------------------------------------
function BinLengths (
-- package local, used by AddCross, GenCross
-- ------------------------------------------------------------
Bin1, Bin2, Bin3, Bin4, Bin5, Bin6, Bin7, Bin8, Bin9, Bin10, Bin11,
Bin12, Bin13, Bin14, Bin15, Bin16, Bin17, Bin18, Bin19, Bin20 : CovBinType := NULL_BIN
) return integer_vector is
variable result : integer_vector(1 to 20) := (others => 0 ) ;
variable i : integer := result'left ;
variable Len : integer ;
begin
loop
case i is
when 1 => Len := Bin1'length ;
when 2 => Len := Bin2'length ;
when 3 => Len := Bin3'length ;
when 4 => Len := Bin4'length ;
when 5 => Len := Bin5'length ;
when 6 => Len := Bin6'length ;
when 7 => Len := Bin7'length ;
when 8 => Len := Bin8'length ;
when 9 => Len := Bin9'length ;
when 10 => Len := Bin10'length ;
when 11 => Len := Bin11'length ;
when 12 => Len := Bin12'length ;
when 13 => Len := Bin13'length ;
when 14 => Len := Bin14'length ;
when 15 => Len := Bin15'length ;
when 16 => Len := Bin16'length ;
when 17 => Len := Bin17'length ;
when 18 => Len := Bin18'length ;
when 19 => Len := Bin19'length ;
when 20 => Len := Bin20'length ;
when others => Len := 0 ;
end case ;
result(i) := Len ;
exit when Len = 0 ;
i := i + 1 ;
exit when i = 21 ;
end loop ;
return result(1 to (i-1)) ;
end function BinLengths ;
-- ------------------------------------------------------------
function CalcNumCrossBins ( BinLens : integer_vector ) return integer is
-- package local, used by AddCross
-- ------------------------------------------------------------
variable result : integer := 1 ;
begin
for i in BinLens'range loop
result := result * BinLens(i) ;
end loop ;
return result ;
end function CalcNumCrossBins ;
-- ------------------------------------------------------------
procedure IncBinIndex (
-- package local, used by AddCross
-- ------------------------------------------------------------
variable BinIndex : inout integer_vector ;
constant BinLens : in integer_vector
) is
alias aBinIndex : integer_vector(1 to BinIndex'length) is BinIndex ;
alias aBinLens : integer_vector(aBinIndex'range) is BinLens ;
begin
-- increment right most one, then if overflow, increment next
-- assumes bins numbered from 1 to N. - assured by ConcatenateBins
for i in aBinIndex'reverse_range loop
aBinIndex(i) := aBinIndex(i) + 1 ;
exit when aBinIndex(i) <= aBinLens(i) ;
aBinIndex(i) := 1 ;
end loop ;
end procedure IncBinIndex ;
-- ------------------------------------------------------------
function ConcatenateBins (
-- package local, used by AddCross
-- ------------------------------------------------------------
BinIndex : integer_vector ;
Bin1, Bin2, Bin3, Bin4, Bin5, Bin6, Bin7, Bin8, Bin9, Bin10, Bin11,
Bin12, Bin13, Bin14, Bin15, Bin16, Bin17, Bin18, Bin19, Bin20 : CovBinType := NULL_BIN
) return CovBinType is
alias aBin1 : CovBinType (1 to Bin1'length) is Bin1 ;
alias aBin2 : CovBinType (1 to Bin2'length) is Bin2 ;
alias aBin3 : CovBinType (1 to Bin3'length) is Bin3 ;
alias aBin4 : CovBinType (1 to Bin4'length) is Bin4 ;
alias aBin5 : CovBinType (1 to Bin5'length) is Bin5 ;
alias aBin6 : CovBinType (1 to Bin6'length) is Bin6 ;
alias aBin7 : CovBinType (1 to Bin7'length) is Bin7 ;
alias aBin8 : CovBinType (1 to Bin8'length) is Bin8 ;
alias aBin9 : CovBinType (1 to Bin9'length) is Bin9 ;
alias aBin10 : CovBinType (1 to Bin10'length) is Bin10 ;
alias aBin11 : CovBinType (1 to Bin11'length) is Bin11 ;
alias aBin12 : CovBinType (1 to Bin12'length) is Bin12 ;
alias aBin13 : CovBinType (1 to Bin13'length) is Bin13 ;
alias aBin14 : CovBinType (1 to Bin14'length) is Bin14 ;
alias aBin15 : CovBinType (1 to Bin15'length) is Bin15 ;
alias aBin16 : CovBinType (1 to Bin16'length) is Bin16 ;
alias aBin17 : CovBinType (1 to Bin17'length) is Bin17 ;
alias aBin18 : CovBinType (1 to Bin18'length) is Bin18 ;
alias aBin19 : CovBinType (1 to Bin19'length) is Bin19 ;
alias aBin20 : CovBinType (1 to Bin20'length) is Bin20 ;
alias aBinIndex : integer_vector(1 to BinIndex'length) is BinIndex ;
variable result : CovBinType(aBinIndex'range) ;
begin
for i in aBinIndex'range loop
case i is
when 1 => result(i) := aBin1(aBinIndex(i)) ;
when 2 => result(i) := aBin2(aBinIndex(i)) ;
when 3 => result(i) := aBin3(aBinIndex(i)) ;
when 4 => result(i) := aBin4(aBinIndex(i)) ;
when 5 => result(i) := aBin5(aBinIndex(i)) ;
when 6 => result(i) := aBin6(aBinIndex(i)) ;