Subversion Repositories soc_maker

###############################################################

#

#  File:      component.rb

#

#  Author:    Christian Hättich

#

#  Project:   System-On-Chip Maker

#

#  Target:    Linux / Windows / Mac

#

#  Language:  ruby

#

#

###############################################################

#

#

#   Copyright (C) 2014  Christian Hättich  - feddischson [ at ] opencores.org

#

#   This program is free software: you can redistribute it and/or modify

#   it under the terms of the GNU General Public License as published by

#   the Free Software Foundation, either version 3 of the License, or

#   (at your option) any later version.

#

#   This program 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

#   GNU General Public License for more details.

#

#   You should have received a copy of the GNU General Public License

#   along with this program.  If not, see .

#

#

###############################################################

#

#   Description:

#     This class represents an abstract component.

#     It is one of the central classes and holds data,

#     which is used to describe and instanciate a core or SOC.

#

#     The following fields are defined and used

#     by CoreDef and SOCDef

#         - name               : name of the core  (mandatory)

#         - version            : version of the core  (mandatory)

#         - toplevel           : toplevel name (mandatory)

#         - description        : description of this core

#         - date               : creation date

#         - license            : license of this core

#         - licensefile        : location of the license file

#         - author             : author of this core

#         - authormail         : author-mail of this core

#         - vccmd              : a version control command, which is used

#                                to download the files

#         - interfaces         : interfaces which are implemented

#                                see SOCMaker::IfcSpc

#         - inst_parameters    : hash of instantiation parameters

#                                see SOCMaker::Parameter

#         - static_parameters  : hash of static parameters

#                                see SOCMaker::SParameter

########

#

# TODO

#

#

###############################################################

module SOCMaker

class Component

  include ERR

  include YAML_EXT

  attr_accessor :name

  attr_accessor :version

  attr_accessor :toplevel

  attr_accessor :description

  attr_accessor :date

  attr_accessor :license

  attr_accessor :licensefile

  attr_accessor :author

  attr_accessor :authormail

  attr_accessor :vccmd

  attr_accessor :interfaces

  attr_accessor :functions

  attr_accessor :inst_parameters

  attr_accessor :static_parameters

  def initialize( name, version, toplevel, options = {} )

    init_with( { 'name'      => name,

                 'version'   => version,

                 'toplevel'  => toplevel }.merge( options ) )

  end

  def encode_with( coder )

    %w[ name version description date license licensefile

        author authormail vccmd toplevel interfaces

        functions inst_parameters static_parameters ].

          each { |v| coder[ v ] = instance_variable_get "@#{v}" }

  end

  def init_with( coder )

    serr_if( coder[ 'name' ] == nil,

      'Name not defined',

      field:    'name'    )

    @name = coder[ 'name' ]

    verr_if( !@name.is_a?( String ),

      'The name must be of type string',

      field:    'name'         )

    serr_if( @name.size  == 0,

      'Name not defined (size == 0)',

      field:    'name'    )

    verr_if( !!SOCMaker::conf[ :name_regex ].match( @name ) == false,

         'The core name is invalid',

        instance: @name,

        field:    'name' )

    serr_if( coder[ 'version' ] == nil,

      'Version not defined',

      instance: @name,

      field:    'version' )

    @version = coder[ 'version' ]

    serr_if( @version.size == 0,

      'Version not defined (size == 0)',

      instance: @name,

      field:    'version' )

    # cast from numeric to string, if not given as string

    @version = @version.to_s if @version.is_a? ( Numeric )

    verr_if( !@version.is_a?( String ),

      'The name must be of type string or numeric',

      field:    'name'         )

    serr_if( coder[ 'toplevel' ] == nil,

      'Toplevel not defined',

      instance: @name,

      field:    'toplevel' )

    @toplevel = coder[ 'toplevel' ]

    verr_if( !@toplevel.is_a?( String ),

      "toplevel must be of type string",

      instance: @name,

      field:    "toplevel" )

    serr_if( @toplevel.size  == 0,

      'Toplevel not defined (size == 0 )',

      instance: @name,

      field:    'toplevel' )

    # set non-nil values

    #  -> we don't need to check for nil in the rest of the

    #     processing

    @description       = coder[ 'description'       ] || ""

    @date              = coder[ 'date'              ] || ""

    @license           = coder[ 'license'           ] || ""

    @licensefile       = coder[ 'licensefile'       ] || ""

    @author            = coder[ 'author'            ] || ""

    @authormail        = coder[ 'authormail'        ] || ""

    @vccmd             = coder[ 'vccmd'             ] || ""

    @interfaces        = coder[ 'interfaces'        ] || {}

    @functions         = coder[ 'functions'         ] || {}

    @inst_parameters   = coder[ 'inst_parameters'   ] || {}

    @static_parameters = coder[ 'static_parameters' ] || {}

    # ensure, that these fields are of type String

    %w[ description date license licensefile

        author authormail vccmd ].each do |n|

      verr_if( !instance_variable_get( '@'+n ).is_a?( String ),

        "#{n} must be of type String",

        instance: @name,

        field:    n )

    end

    # ensure, that these fields are of type Hash

    %w[ interfaces inst_parameters

        functions  static_parameters ].each do |n|

      verr_if( !instance_variable_get( '@'+n ).is_a?( Hash ),

        "#{n} must be of type Hash",

        instance: @name,

        field:    n )

    end

    # check interfaces

    @interfaces.each do |ifc_name, ifc|

      serr_if( ifc == nil,

            'Interface not defined',

            instance:   @name+":"+ifc_name.to_s )

      serr_if( !ifc.is_a?( SOCMaker::IfcDef ),

            'Interface definition is not SOCMaker::IfcDef (use SOCM_IFC)',

            instance: @name+":"+ifc_name.to_s )

    end

    # check instance parameters

    @inst_parameters.each do |name, param |

      serr_if( param == nil,

            'Instance parameter not defined',

            instance:   @name+":"+name.to_s )

      serr_if( !param.is_a?( SOCMaker::Parameter ),

            'Instance parameter not SOCMaker::Parameter (use SOCM_PARAM)',

            instance: @name+":"+name.to_s )

    end

    # check instance parameters

    @static_parameters.each do |name, sparam |

      serr_if( sparam == nil,

            'Static parameter not defined',

            instance:   @name+":"+name.to_s )

      serr_if( !sparam.is_a?( SOCMaker::SParameter ),

            'Static parameter not SOCMaker::Parameter (use SOCM_SPARAM)',

            instance: @name+":"+name.to_s )

    end

  end

  def get_files

    unless self.vccmd.nil? or self.vccmd == 0

      system( self.vccmd )

    end

  end

  def generics

    @inst_parameters.each_with_index do |(name, val), i|

      yield( name.to_s, val.type, val.default, i == @inst_parameters.size-1 )

    end

  end

  #

  # Iterates over interface list.

  # For each interface, all ports are processed.

  # For each port within each interface, we lookup the port defn

  # and yield the call block with

  #   - port-name

  #   - port-definition

  #   - info if last

  # as argument

  #

  #

  #

  def ports( *args )

    if args.size == 0

      @interfaces.values.each_with_index do | ifc, i_ifc; ifc_def|

        # get interface definition

        ifc_def = SOCMaker::lib.get_ifc( ifc.name, ifc.version )

        # loop over ports in this interface

        ifc.ports.each_with_index do |(port_name, port_def), i_port; port_dir|

          # the reference to the port in the definition

          defn_ref = port_def.defn

          port_dir = ifc_def.ports[ defn_ref.to_sym ]

          perr_if( port_dir == nil,

                "Can't find #{defn_ref} in interface " +

                "definition #{ifc_def.name} version "  +

                ifc_def.version + "==>>" + ifc_def.to_yaml )

          # An xor mechanism between port_dir and ifc=>dir is used

          # to determine the direction of a port, for example:

          #  If the interface is declared as input (1) and a port is declared as input (1)

          #  the resulting direction will be an output 1^1 = 0.

          #  But if the overall interface direction is an output (0) and a port is declared

          #  as input, the resulting direction will an input 0^1 = 1.

          # This allows to define a port-direction in the interface definition,

          # and toggle the directions on core-definition level.

          #  (name, direction, length, is_last)

          yield(  port_name.to_s,

                  port_dir ^ ifc.dir,

                  port_def.len,

                  ( (i_port == ifc.ports.size-1 ) and (i_ifc == @interfaces.size-1 ) ) )

        end

      end

    elsif args.size == 1

      # get interface (input is the name as string  )

      ifc = @interfaces[ args.first.to_sym  ]

      ifc_def = SOCMaker::lib.get_ifc( ifc.name, ifc.version )

      ifc.ports.each do |port_name, port_def; port_dir|

        port_def = port_def.defn

        port_dir = ifc_def.ports[ port_def.to_sym ]

        if port_dir == nil

          perr_if( port_dir==nil,

              "Can't find #{port_def} in" +

              "interface definition #{ifc_def.name} " +

              "version #{ifc_def.version}" )

        end

        yield(  port_def.to_s,

                port_name.to_s,

                port_dir ^ ifc.dir )

      end

    else

    end

  end

  def param_ok?( param_name, param_value )

    param = inst_parameters[ param_name.to_sym ]

    param = static_parameters[ param_name.to_sym ] if param == nil

    return false if param == nil

  end

  def verify( is_soc = false )

    # check interfaces

    @interfaces.each do |ifc_name, ifc|

      ifc.verify

    end

    # check instance parameters

    @inst_parameters.each do |name, param |

      param.verify

    end

    # check instance parameters

    @static_parameters.each do |name, sparam |

      sparam.verify

    end

  end

  def ==(o)

    tmp    = ( o.class   == self.class )

    return tmp if !tmp

    %w[ name version description date license licensefile

        author authormail vccmd toplevel interfaces

        functions inst_parameters static_parameters ].

          each do |v|

      return false if instance_variable_get( "@#{v}" ) != o.instance_variable_get( "@#{v}" )

    end

    return true

  end

end # class CoreDef

end # module SOCMaker

# vim: noai:ts=2:sw=2