| <html><head><title>uvm_sequence #(REQ,RSP)</title><link rel="stylesheet" type="text/css" href="../../styles/main.css"><script language=JavaScript src="../../javascript/main.js"></script></head><body class="FramedContentPage" onLoad="NDOnLoad()"><script language=JavaScript><!-- |
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| <div class="CClass"><div class=CTopic id=MainTopic><h1 class=CTitle><a name="uvm_sequence#(REQ,RSP)" href="../../src/seq/uvm_sequence.svh">uvm_sequence #(REQ,RSP)</a></h1><div class=CBody><p>The uvm_sequence class provides the interfaces necessary in order to create streams of sequence items and/or other sequences.</p> |
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| <!--START_ND_SUMMARY index=0--> |
| <div class=Summary><div class=STitle>Summary</div><div class=SBorder><table border=0 cellspacing=0 cellpadding=0 class=STable> |
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| <tr class="SClass"><td colspan=2 class=SEntry><a href="#uvm_sequence#(REQ,RSP)" id=link6 onMouseOver="ShowTip(event, 'tt6', 'link6')" onMouseOut="HideTip('tt6')">uvm_sequence #(REQ,RSP)</a></td></tr> |
| <tr class=SMain><td colspan=2 class=SWideDescription>The uvm_sequence class provides the interfaces necessary in order to create streams of sequence items and/or other sequences.</td></tr> |
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| <!-- HIERARCHY --> |
| <tr class="SHierarchy SIndent1 "><td colspan=2 class="SEntry SIndent1">Class Hierarchy</td></tr> |
| <tr class="SPrototype SIndent1"><td colspan=2 class=SDescription> |
| <div class=ClassHierarchy> |
| <table border=0 cellspacing=0 cellpadding=0> |
| <tr><td><div class=CHParent><div class=CHEntry><a href="../base/uvm_misc-svh.html#uvm_void" class=LGeneric id=link1 onMouseOver="ShowTip(event, 'tt1', 'link1')" onMouseOut="HideTip('tt1')">uvm_void</a></div></div></td></tr> |
| <tr><td><div class=CHParent><div class=CHEntry><a href="../base/uvm_object-svh.html#uvm_object" class=LClass id=link2 onMouseOver="ShowTip(event, 'tt2', 'link2')" onMouseOut="HideTip('tt2')">uvm_object</a></div></div></td></tr> |
| <tr><td><div class=CHParent><div class=CHEntry><a href="../base/uvm_transaction-svh.html#uvm_transaction" class=LClass id=link3 onMouseOver="ShowTip(event, 'tt3', 'link3')" onMouseOut="HideTip('tt3')">uvm_transaction</a></div></div></td></tr> |
| <tr><td><div class=CHParent><div class=CHEntry><a href="uvm_sequence_item-svh.html#uvm_sequence_item" class=LClass id=link4 onMouseOver="ShowTip(event, 'tt4', 'link4')" onMouseOut="HideTip('tt4')">uvm_sequence_item</a></div></div></td></tr> |
| <tr><td><div class=CHParent><div class=CHEntry><a href="uvm_sequence_base-svh.html#uvm_sequence_base" class=LClass id=link5 onMouseOver="ShowTip(event, 'tt5', 'link5')" onMouseOut="HideTip('tt5')">uvm_sequence_base</a></div></div></td></tr> |
| <tr><td><div class=CHCurrent><div class=CHEntry>uvm_sequence#(REQ,RSP)</div></div></td></tr> |
| </table> |
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| <!-- PROTOTYPE --> |
| <tr class="SPrototype SIndent1"><td colspan=2 class="SEntry SIndent1">Class Declaration</td></tr> |
| <tr class="SPrototype SIndent1"><td colspan=2 class=SDescription> |
| <blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype> |
| <tr><td><table border=0 cellspacing=0 cellpadding=0><tr> |
| <td class=PBeforeParameters colspan=5>virtual class uvm_sequence #(</td> </tr><tr><td> </td> <td class=PType nowrap>type </td> |
| <td class=PParameter nowrap>REQ</td> |
| <td class=PDefaultValuePrefix> = </td> |
| <td class=PDefaultValue width=100%> uvm_sequence_item,</td> |
| </tr><tr><td> </td> <td class=PType nowrap>type </td> |
| <td class=PParameter nowrap>RSP</td> |
| <td class=PDefaultValuePrefix> = </td> |
| <td class=PDefaultValue width=100%> REQ</td> |
| </tr> |
| <tr> |
| <td class=PAfterParameters colspan=5>) extends uvm_sequence_base</td></tr> |
| </table></td></tr> |
| </table></blockquote> |
| </td></tr> |
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| <tr class="SGroup SIndent1"><td class=SEntry><a href="#uvm_sequence#(REQ,RSP).Methods" >Methods</a></td><td class=SDescription></td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#uvm_sequence#(REQ,RSP).new" id=link7 onMouseOver="ShowTip(event, 'tt7', 'link7')" onMouseOut="HideTip('tt7')">new</a></td><td class=SDescription>Creates and initializes a new sequence object.</td></tr> |
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| <tr class="SMethod SIndent2 SMarked"><td class=SEntry><a href="#uvm_sequence#(REQ,RSP).send_request" id=link8 onMouseOver="ShowTip(event, 'tt8', 'link8')" onMouseOut="HideTip('tt8')">send_request</a></td><td class=SDescription>This method will send the request item to the sequencer, which will forward it to the driver. </td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#uvm_sequence#(REQ,RSP).get_current_item" id=link9 onMouseOver="ShowTip(event, 'tt9', 'link9')" onMouseOut="HideTip('tt9')">get_current_item</a></td><td class=SDescription>Returns the request item currently being executed by the sequencer. </td></tr> |
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| <tr class="SMethod SIndent2 SMarked"><td class=SEntry><a href="#uvm_sequence#(REQ,RSP).get_response" id=link10 onMouseOver="ShowTip(event, 'tt10', 'link10')" onMouseOut="HideTip('tt10')">get_response</a></td><td class=SDescription>By default, sequences must retrieve responses by calling get_response. </td></tr></table></div></div><!--END_ND_SUMMARY--> |
| </div></div></div> |
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| <!--CONTENT index=1 --> |
| <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="uvm_sequence#(REQ,RSP).Methods" href="../../src/seq/uvm_sequence.svh">Methods</a></h3></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="uvm_sequence#(REQ,RSP).new" href="../../src/seq/uvm_sequence.svh">new</a></h3> |
| <blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype> |
| <tr><td><table border=0 cellspacing=0 cellpadding=0><tr> |
| <td class=PBeforeParameters nowrap>function new (</td> <td class=PType nowrap>string </td> |
| <td class=PParameter nowrap>name</td> |
| <td class=PDefaultValuePrefix> = </td> |
| <td class=PDefaultValue width=100%> "uvm_sequence"</td> |
| <td class=PAfterParameters nowrap>)</td></tr> |
| </table></td></tr> |
| </table></blockquote> |
| <div class=CBody><p>Creates and initializes a new sequence object.</p></div></div></div> |
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| <!--CONTENT index=3 --> |
| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="uvm_sequence#(REQ,RSP).send_request" href="../../src/seq/uvm_sequence.svh">send_request</a></h3> |
| <blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype> |
| <tr><td><table border=0 cellspacing=0 cellpadding=0><tr> |
| <td class=PBeforeParameters nowrap>function void send_request(</td> <td class=PType nowrap>uvm_sequence_item </td> |
| <td class=PParameter nowrap>request,</td> |
| <td class=PDefaultValuePrefix> </td> |
| <td class=PDefaultValue width=100%></td> |
| </tr><tr><td></td> <td class=PType nowrap>bit </td> |
| <td class=PParameter nowrap>rerandomize</td> |
| <td class=PDefaultValuePrefix> = </td> |
| <td class=PDefaultValue width=100%> 0</td> |
| <td class=PAfterParameters nowrap>)</td></tr> |
| </table></td></tr> |
| </table></blockquote> |
| <div class=CBody><p>This method will send the request item to the sequencer, which will forward it to the driver. If the rerandomize bit is set, the item will be randomized before being sent to the driver. The send_request function may only be called after <a href="uvm_sequence_base-svh.html#uvm_sequence_base.wait_for_grant" class=LMethod id=link11 onMouseOver="ShowTip(event, 'tt11', 'link11')" onMouseOut="HideTip('tt11')">uvm_sequence_base::wait_for_grant</a> returns.</p></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="uvm_sequence#(REQ,RSP).get_current_item" href="../../src/seq/uvm_sequence.svh">get_current_item</a></h3> |
| <blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>function REQ get_current_item() |
| </td></tr></table></blockquote><div class=CBody><p>Returns the request item currently being executed by the sequencer. If the sequencer is not currently executing an item, this method will return null.</p><p>The sequencer is executing an item from the time that get_next_item or peek is called until the time that get or item_done is called.</p><p>Note that a driver that only calls get will never show a current item, since the item is completed at the same time as it is requested.</p></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="uvm_sequence#(REQ,RSP).get_response" href="../../src/seq/uvm_sequence.svh">get_response</a></h3> |
| <blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype> |
| <tr><td><table border=0 cellspacing=0 cellpadding=0><tr> |
| <td class=PBeforeParameters nowrap>virtual task get_response(</td> <td class=PTypePrefix nowrap>output </td> |
| <td class=PType nowrap>RSP </td> |
| <td class=PParameter nowrap>response,</td> |
| <td class=PDefaultValuePrefix> </td> |
| <td class=PDefaultValue width=100%></td> |
| </tr><tr><td></td> <td class=PTypePrefix nowrap>input </td> |
| <td class=PType nowrap>int </td> |
| <td class=PParameter nowrap>transaction_id</td> |
| <td class=PDefaultValuePrefix> = </td> |
| <td class=PDefaultValue width=100%> -1</td> |
| <td class=PAfterParameters nowrap>)</td></tr> |
| </table></td></tr> |
| </table></blockquote> |
| <div class=CBody><p>By default, sequences must retrieve responses by calling get_response. If no transaction_id is specified, this task will return the next response sent to this sequence. If no response is available in the response queue, the method will block until a response is recieved.</p><p>If a transaction_id is parameter is specified, the task will block until a response with that transaction_id is received in the response queue.</p><p>The default size of the response queue is 8. The get_response method must be called soon enough to avoid an overflow of the response queue to prevent responses from being dropped.</p><p>If a response is dropped in the response queue, an error will be reported unless the error reporting is disabled via set_response_queue_error_report_disabled.</p></div></div></div> |
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| <!--START_ND_TOOLTIPS--> |
| <div class=CToolTip id="tt1"><div class=CGeneric>The <i>uvm_void</i> class is the base class for all UVM classes. </div></div><div class=CToolTip id="tt2"><div class=CClass> |
| <blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>virtual class uvm_object extends uvm_void |
| </td></tr></table></blockquote>The uvm_object class is the base class for all UVM data and hierarchical classes. </div></div><div class=CToolTip id="tt3"><div class=CClass> |
| <blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>virtual class uvm_transaction extends uvm_object |
| </td></tr></table></blockquote>The uvm_transaction class is the root base class for UVM transactions. </div></div><div class=CToolTip id="tt4"><div class=CClass> |
| <blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>class uvm_sequence_item extends uvm_transaction |
| </td></tr></table></blockquote>The base class for user-defined sequence items and also the base class for the uvm_sequence class. </div></div><div class=CToolTip id="tt5"><div class=CClass> |
| <blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>class uvm_sequence_base extends uvm_sequence_item |
| </td></tr></table></blockquote>The uvm_sequence_base class provides the interfaces needed to create streams of sequence items and/or other sequences.</div></div><div class=CToolTip id="tt6"><div class=CClass> |
| <blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype> |
| <tr><td><table border=0 cellspacing=0 cellpadding=0><tr> |
| <td class=PBeforeParameters colspan=5>virtual class uvm_sequence #(</td> </tr><tr><td> </td> <td class=PType nowrap>type </td> |
| <td class=PParameter nowrap>REQ</td> |
| <td class=PDefaultValuePrefix> = </td> |
| <td class=PDefaultValue width=100%> uvm_sequence_item,</td> |
| </tr><tr><td> </td> <td class=PType nowrap>type </td> |
| <td class=PParameter nowrap>RSP</td> |
| <td class=PDefaultValuePrefix> = </td> |
| <td class=PDefaultValue width=100%> REQ</td> |
| </tr> |
| <tr> |
| <td class=PAfterParameters colspan=5>) extends uvm_sequence_base</td></tr> |
| </table></td></tr> |
| </table></blockquote> |
| The uvm_sequence class provides the interfaces necessary in order to create streams of sequence items and/or other sequences.</div></div><div class=CToolTip id="tt7"><div class=CMethod> |
| <blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype> |
| <tr><td><table border=0 cellspacing=0 cellpadding=0><tr> |
| <td class=PBeforeParameters nowrap>function new (</td> <td class=PType nowrap>string </td> |
| <td class=PParameter nowrap>name</td> |
| <td class=PDefaultValuePrefix> = </td> |
| <td class=PDefaultValue width=100%> "uvm_sequence"</td> |
| <td class=PAfterParameters nowrap>)</td></tr> |
| </table></td></tr> |
| </table></blockquote> |
| Creates and initializes a new sequence object.</div></div><div class=CToolTip id="tt8"><div class=CMethod> |
| <blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype> |
| <tr><td><table border=0 cellspacing=0 cellpadding=0><tr> |
| <td class=PBeforeParameters nowrap>function void send_request(</td> <td class=PType nowrap>uvm_sequence_item </td> |
| <td class=PParameter nowrap>request,</td> |
| <td class=PDefaultValuePrefix> </td> |
| <td class=PDefaultValue width=100%></td> |
| </tr><tr><td></td> <td class=PType nowrap>bit </td> |
| <td class=PParameter nowrap>rerandomize</td> |
| <td class=PDefaultValuePrefix> = </td> |
| <td class=PDefaultValue width=100%> 0</td> |
| <td class=PAfterParameters nowrap>)</td></tr> |
| </table></td></tr> |
| </table></blockquote> |
| This method will send the request item to the sequencer, which will forward it to the driver. </div></div><div class=CToolTip id="tt9"><div class=CMethod> |
| <blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>function REQ get_current_item() |
| </td></tr></table></blockquote>Returns the request item currently being executed by the sequencer. </div></div><div class=CToolTip id="tt10"><div class=CMethod> |
| <blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype> |
| <tr><td><table border=0 cellspacing=0 cellpadding=0><tr> |
| <td class=PBeforeParameters nowrap>virtual task get_response(</td> <td class=PTypePrefix nowrap>output </td> |
| <td class=PType nowrap>RSP </td> |
| <td class=PParameter nowrap>response,</td> |
| <td class=PDefaultValuePrefix> </td> |
| <td class=PDefaultValue width=100%></td> |
| </tr><tr><td></td> <td class=PTypePrefix nowrap>input </td> |
| <td class=PType nowrap>int </td> |
| <td class=PParameter nowrap>transaction_id</td> |
| <td class=PDefaultValuePrefix> = </td> |
| <td class=PDefaultValue width=100%> -1</td> |
| <td class=PAfterParameters nowrap>)</td></tr> |
| </table></td></tr> |
| </table></blockquote> |
| By default, sequences must retrieve responses by calling get_response. </div></div><div class=CToolTip id="tt11"><div class=CMethod> |
| <blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype> |
| <tr><td><table border=0 cellspacing=0 cellpadding=0><tr> |
| <td class=PBeforeParameters nowrap>virtual task wait_for_grant(</td> <td class=PType nowrap>int </td> |
| <td class=PParameter nowrap>item_priority</td> |
| <td class=PDefaultValuePrefix> = </td> |
| <td class=PDefaultValue width=100%> -1,</td> |
| </tr><tr><td></td> <td class=PType nowrap>bit </td> |
| <td class=PParameter nowrap>lock_request</td> |
| <td class=PDefaultValuePrefix> = </td> |
| <td class=PDefaultValue width=100%> 0</td> |
| <td class=PAfterParameters nowrap>)</td></tr> |
| </table></td></tr> |
| </table></blockquote> |
| This task issues a request to the current sequencer. </div></div><!--END_ND_TOOLTIPS--> |
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