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HanySalah |
//----------------------------------------------------------------------
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// Copyright 2007-2011 Mentor Graphics Corporation
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// Copyright 2007-2010 Cadence Design Systems, Inc.
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// Copyright 2010 Synopsys, Inc.
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// All Rights Reserved Worldwide
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//
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// Licensed under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in
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// compliance with the License. You may obtain a copy of
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// the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in
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// writing, software distributed under the License is
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// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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// CONDITIONS OF ANY KIND, either express or implied. See
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// the License for the specific language governing
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// permissions and limitations under the License.
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//----------------------------------------------------------------------
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typedef class uvm_sequence_base;
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typedef class uvm_sequencer_base;
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//------------------------------------------------------------------------------
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//
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// CLASS: uvm_sequence_item
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//
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// The base class for user-defined sequence items and also the base class for
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// the uvm_sequence class. The uvm_sequence_item class provides the basic
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// functionality for objects, both sequence items and sequences, to operate in
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// the sequence mechanism.
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//
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//------------------------------------------------------------------------------
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class uvm_sequence_item extends uvm_transaction;
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local int m_sequence_id = -1;
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protected bit m_use_sequence_info;
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protected int m_depth = -1;
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protected uvm_sequencer_base m_sequencer;
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protected uvm_sequence_base m_parent_sequence;
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static bit issued1,issued2;
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bit print_sequence_info;
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// Function: new
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//
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// The constructor method for uvm_sequence_item.
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function new (string name = "uvm_sequence_item");
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super.new(name);
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endfunction
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function string get_type_name();
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return "uvm_sequence_item";
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endfunction
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// Macro for factory creation
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`uvm_object_registry(uvm_sequence_item, "uvm_sequence_item")
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// Function- set_sequence_id
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function void set_sequence_id(int id);
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m_sequence_id = id;
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endfunction
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// Function: get_sequence_id
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//
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// private
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//
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// Get_sequence_id is an internal method that is not intended for user code.
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// The sequence_id is not a simple integer. The get_transaction_id is meant
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// for users to identify specific transactions.
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//
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// These methods allow access to the sequence_item sequence and transaction
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// IDs. get_transaction_id and set_transaction_id are methods on the
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// uvm_transaction base_class. These IDs are used to identify sequences to
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// the sequencer, to route responses back to the sequence that issued a
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// request, and to uniquely identify transactions.
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//
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// The sequence_id is assigned automatically by a sequencer when a sequence
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// initiates communication through any sequencer calls (i.e. `uvm_do_*,
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// wait_for_grant). A sequence_id will remain unique for this sequence
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// until it ends or it is killed. However, a single sequence may have
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// multiple valid sequence ids at any point in time. Should a sequence
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// start again after it has ended, it will be given a new unique sequence_id.
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//
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// The transaction_id is assigned automatically by the sequence each time a
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// transaction is sent to the sequencer with the transaction_id in its
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// default (-1) value. If the user sets the transaction_id to any non-default
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// value, that value will be maintained.
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//
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// Responses are routed back to this sequences based on sequence_id. The
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// sequence may use the transaction_id to correlate responses with their
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// requests.
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function int get_sequence_id();
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return (m_sequence_id);
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endfunction
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// Function: set_item_context
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//
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// Set the sequence and sequencer execution context for a sequence item
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function void set_item_context(uvm_sequence_base parent_seq,
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uvm_sequencer_base sequencer = null);
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set_use_sequence_info(1);
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if (parent_seq != null) set_parent_sequence(parent_seq);
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if (sequencer == null && m_parent_sequence != null) sequencer = m_parent_sequence.get_sequencer();
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set_sequencer(sequencer);
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if (m_parent_sequence != null) set_depth(m_parent_sequence.get_depth() + 1);
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reseed();
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endfunction
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// Function: set_use_sequence_info
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//
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function void set_use_sequence_info(bit value);
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m_use_sequence_info = value;
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endfunction
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// Function: get_use_sequence_info
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//
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// These methods are used to set and get the status of the use_sequence_info
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// bit. Use_sequence_info controls whether the sequence information
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// (sequencer, parent_sequence, sequence_id, etc.) is printed, copied, or
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// recorded. When use_sequence_info is the default value of 0, then the
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// sequence information is not used. When use_sequence_info is set to 1,
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// the sequence information will be used in printing and copying.
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function bit get_use_sequence_info();
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return (m_use_sequence_info);
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endfunction
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// Function: set_id_info
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//
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// Copies the sequence_id and transaction_id from the referenced item into
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// the calling item. This routine should always be used by drivers to
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// initialize responses for future compatibility.
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function void set_id_info(uvm_sequence_item item);
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if (item == null) begin
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uvm_report_fatal(get_full_name(), "set_id_info called with null parameter", UVM_NONE);
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end
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this.set_transaction_id(item.get_transaction_id());
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this.set_sequence_id(item.get_sequence_id());
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endfunction
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// Function: set_sequencer
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//
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// Sets the default sequencer for the sequence to sequencer. It will take
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// effect immediately, so it should not be called while the sequence is
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// actively communicating with the sequencer.
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virtual function void set_sequencer(uvm_sequencer_base sequencer);
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m_sequencer = sequencer;
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m_set_p_sequencer();
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endfunction
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// Function: get_sequencer
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//
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// Returns a reference to the default sequencer used by this sequence.
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function uvm_sequencer_base get_sequencer();
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return m_sequencer;
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endfunction
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// Function: set_parent_sequence
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//
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// Sets the parent sequence of this sequence_item. This is used to identify
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// the source sequence of a sequence_item.
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function void set_parent_sequence(uvm_sequence_base parent);
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m_parent_sequence = parent;
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endfunction
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// Function: get_parent_sequence
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//
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// Returns a reference to the parent sequence of any sequence on which this
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// method was called. If this is a parent sequence, the method returns ~null~.
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function uvm_sequence_base get_parent_sequence();
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return (m_parent_sequence);
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endfunction
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// Function: set_depth
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//
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// The depth of any sequence is calculated automatically. However, the user
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// may use set_depth to specify the depth of a particular sequence. This
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// method will override the automatically calculated depth, even if it is
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// incorrect.
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function void set_depth(int value);
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m_depth = value;
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endfunction
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// Function: get_depth
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//
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// Returns the depth of a sequence from its parent. A parent sequence will
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// have a depth of 1, its child will have a depth of 2, and its grandchild
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// will have a depth of 3.
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function int get_depth();
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// If depth has been set or calculated, then use that
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if (m_depth != -1) begin
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return (m_depth);
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end
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// Calculate the depth, store it, and return the value
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if (m_parent_sequence == null) begin
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m_depth = 1;
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end else begin
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m_depth = m_parent_sequence.get_depth() + 1;
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end
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return (m_depth);
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endfunction
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// Function: is_item
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//
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// This function may be called on any sequence_item or sequence. It will
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// return 1 for items and 0 for sequences (which derive from this class).
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virtual function bit is_item();
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return(1);
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endfunction
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// Function- get_full_name
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//
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// Internal method; overrides must follow same naming convention
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function string get_full_name();
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if(m_parent_sequence != null)
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get_full_name = {m_parent_sequence.get_full_name(), "."};
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else if(m_sequencer!=null)
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get_full_name = {m_sequencer.get_full_name(), "."};
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if(get_name() != "")
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get_full_name = {get_full_name, get_name()};
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else begin
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get_full_name = {get_full_name, "_item"};
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end
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endfunction
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// Function: get_root_sequence_name
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//
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// Provides the name of the root sequence (the top-most parent sequence).
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function string get_root_sequence_name();
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uvm_sequence_base root_seq;
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root_seq = get_root_sequence();
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if (root_seq == null)
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return "";
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else
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return root_seq.get_name();
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endfunction
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// Function- m_set_p_sequencer
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//
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// Internal method
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virtual function void m_set_p_sequencer();
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return;
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endfunction
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// Function: get_root_sequence
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//
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// Provides a reference to the root sequence (the top-most parent sequence).
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function uvm_sequence_base get_root_sequence();
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uvm_sequence_item root_seq_base;
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uvm_sequence_base root_seq;
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root_seq_base = this;
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while(1) begin
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if(root_seq_base.get_parent_sequence()!=null) begin
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root_seq_base = root_seq_base.get_parent_sequence();
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$cast(root_seq, root_seq_base);
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end
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else
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return root_seq;
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end
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endfunction
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// Function: get_sequence_path
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//
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// Provides a string of names of each sequence in the full hierarchical
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// path. A "." is used as the separator between each sequence.
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function string get_sequence_path();
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uvm_sequence_item this_item;
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string seq_path;
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this_item = this;
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seq_path = this.get_name();
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while(1) begin
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if(this_item.get_parent_sequence()!=null) begin
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this_item = this_item.get_parent_sequence();
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seq_path = {this_item.get_name(), ".", seq_path};
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end
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else
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return seq_path;
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end
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endfunction
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//---------------------------
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// Group: Reporting Interface
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//---------------------------
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//
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// Sequence items and sequences will use the sequencer which they are
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// associated with for reporting messages. If no sequencer has been set
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// for the item/sequence using or indirectly via
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// or ),
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// then the global reporter will be used.
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virtual function uvm_report_object uvm_get_report_object();
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if(m_sequencer == null) begin
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uvm_coreservice_t cs = uvm_coreservice_t::get();
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return cs.get_root();
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end else
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return m_sequencer;
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endfunction
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function int uvm_report_enabled(int verbosity,
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uvm_severity severity=UVM_INFO, string id="");
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uvm_report_object l_report_object = uvm_get_report_object();
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if (l_report_object.get_report_verbosity_level(severity, id) < verbosity)
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return 0;
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return 1;
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endfunction
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// Function: uvm_report
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virtual function void uvm_report( uvm_severity severity,
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string id,
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string message,
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int verbosity = (severity == uvm_severity'(UVM_ERROR)) ? UVM_LOW :
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(severity == uvm_severity'(UVM_FATAL)) ? UVM_NONE : UVM_MEDIUM,
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string filename = "",
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int line = 0,
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string context_name = "",
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bit report_enabled_checked = 0);
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uvm_report_message l_report_message;
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if (report_enabled_checked == 0) begin
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if (!uvm_report_enabled(verbosity, severity, id))
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return;
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end
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l_report_message = uvm_report_message::new_report_message();
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l_report_message.set_report_message(severity, id, message,
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verbosity, filename, line, context_name);
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uvm_process_report_message(l_report_message);
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endfunction
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// Function: uvm_report_info
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|
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virtual function void uvm_report_info( string id,
|
376 |
|
|
string message,
|
377 |
|
|
int verbosity = UVM_MEDIUM,
|
378 |
|
|
string filename = "",
|
379 |
|
|
int line = 0,
|
380 |
|
|
string context_name = "",
|
381 |
|
|
bit report_enabled_checked = 0);
|
382 |
|
|
|
383 |
|
|
this.uvm_report(UVM_INFO, id, message, verbosity, filename, line,
|
384 |
|
|
context_name, report_enabled_checked);
|
385 |
|
|
endfunction
|
386 |
|
|
|
387 |
|
|
// Function: uvm_report_warning
|
388 |
|
|
|
389 |
|
|
virtual function void uvm_report_warning( string id,
|
390 |
|
|
string message,
|
391 |
|
|
int verbosity = UVM_MEDIUM,
|
392 |
|
|
string filename = "",
|
393 |
|
|
int line = 0,
|
394 |
|
|
string context_name = "",
|
395 |
|
|
bit report_enabled_checked = 0);
|
396 |
|
|
|
397 |
|
|
this.uvm_report(UVM_WARNING, id, message, verbosity, filename, line,
|
398 |
|
|
context_name, report_enabled_checked);
|
399 |
|
|
endfunction
|
400 |
|
|
|
401 |
|
|
// Function: uvm_report_error
|
402 |
|
|
|
403 |
|
|
virtual function void uvm_report_error( string id,
|
404 |
|
|
string message,
|
405 |
|
|
int verbosity = UVM_LOW,
|
406 |
|
|
string filename = "",
|
407 |
|
|
int line = 0,
|
408 |
|
|
string context_name = "",
|
409 |
|
|
bit report_enabled_checked = 0);
|
410 |
|
|
|
411 |
|
|
this.uvm_report(UVM_ERROR, id, message, verbosity, filename, line,
|
412 |
|
|
context_name, report_enabled_checked);
|
413 |
|
|
endfunction
|
414 |
|
|
|
415 |
|
|
// Function: uvm_report_fatal
|
416 |
|
|
//
|
417 |
|
|
// These are the primary reporting methods in the UVM. uvm_sequence_item
|
418 |
|
|
// derived types delegate these functions to their associated sequencer
|
419 |
|
|
// if they have one, or to the global reporter. See
|
420 |
|
|
// for details on the messaging functions.
|
421 |
|
|
|
422 |
|
|
virtual function void uvm_report_fatal( string id,
|
423 |
|
|
string message,
|
424 |
|
|
int verbosity = UVM_NONE,
|
425 |
|
|
string filename = "",
|
426 |
|
|
int line = 0,
|
427 |
|
|
string context_name = "",
|
428 |
|
|
bit report_enabled_checked = 0);
|
429 |
|
|
|
430 |
|
|
this.uvm_report(UVM_FATAL, id, message, verbosity, filename, line,
|
431 |
|
|
context_name, report_enabled_checked);
|
432 |
|
|
endfunction
|
433 |
|
|
|
434 |
|
|
virtual function void uvm_process_report_message (uvm_report_message report_message);
|
435 |
|
|
uvm_report_object l_report_object = uvm_get_report_object();
|
436 |
|
|
report_message.set_report_object(l_report_object);
|
437 |
|
|
if (report_message.get_context() == "")
|
438 |
|
|
report_message.set_context(get_sequence_path());
|
439 |
|
|
l_report_object.m_rh.process_report_message(report_message);
|
440 |
|
|
endfunction
|
441 |
|
|
|
442 |
|
|
|
443 |
|
|
// Function- do_print
|
444 |
|
|
//
|
445 |
|
|
// Internal method
|
446 |
|
|
|
447 |
|
|
function void do_print (uvm_printer printer);
|
448 |
|
|
string temp_str0, temp_str1;
|
449 |
|
|
int depth = get_depth();
|
450 |
|
|
super.do_print(printer);
|
451 |
|
|
if(print_sequence_info || m_use_sequence_info) begin
|
452 |
|
|
printer.print_field_int("depth", depth, $bits(depth), UVM_DEC, ".", "int");
|
453 |
|
|
if(m_parent_sequence != null) begin
|
454 |
|
|
temp_str0 = m_parent_sequence.get_name();
|
455 |
|
|
temp_str1 = m_parent_sequence.get_full_name();
|
456 |
|
|
end
|
457 |
|
|
printer.print_string("parent sequence (name)", temp_str0);
|
458 |
|
|
printer.print_string("parent sequence (full name)", temp_str1);
|
459 |
|
|
temp_str1 = "";
|
460 |
|
|
if(m_sequencer != null) begin
|
461 |
|
|
temp_str1 = m_sequencer.get_full_name();
|
462 |
|
|
end
|
463 |
|
|
printer.print_string("sequencer", temp_str1);
|
464 |
|
|
end
|
465 |
|
|
endfunction
|
466 |
|
|
|
467 |
|
|
/*
|
468 |
|
|
virtual task pre_do(bit is_item);
|
469 |
|
|
return;
|
470 |
|
|
endtask
|
471 |
|
|
|
472 |
|
|
virtual task body();
|
473 |
|
|
return;
|
474 |
|
|
endtask
|
475 |
|
|
|
476 |
|
|
virtual function void mid_do(uvm_sequence_item this_item);
|
477 |
|
|
return;
|
478 |
|
|
endfunction
|
479 |
|
|
|
480 |
|
|
virtual function void post_do(uvm_sequence_item this_item);
|
481 |
|
|
return;
|
482 |
|
|
endfunction
|
483 |
|
|
|
484 |
|
|
virtual task wait_for_grant(int item_priority = -1, bit lock_request = 0);
|
485 |
|
|
return;
|
486 |
|
|
endtask
|
487 |
|
|
|
488 |
|
|
virtual function void send_request(uvm_sequence_item request, bit rerandomize = 0);
|
489 |
|
|
return;
|
490 |
|
|
endfunction
|
491 |
|
|
|
492 |
|
|
virtual task wait_for_item_done(int transaction_id = -1);
|
493 |
|
|
return;
|
494 |
|
|
endtask
|
495 |
|
|
*/
|
496 |
|
|
|
497 |
|
|
endclass
|