Changes between Version 6 and Version 7 of TLMDT

Timestamp:

May 11, 2011, 1:43:33 PM (13 years ago)

Author:

gioja

Comment:

--

TLMDT

@@ -128 +128 @@
 
 === 2.2. PDES Null_command
-The Null_command is a message with does not require a response. Its only goal is to deliver a temporal information, in order to preserve the synchronization between components. Mostly, the initiator doesn't stop when the null_command message is sent, except if it is waiting for the response from another transaction. This messages allows the different components to respect their time quantums. It is also used to perform the Active_Sync on initiators. The message scope is local, it cannot be routed or redirected. Receiving a null_command awakes the target if it is waiting. Initiators and interconnects can send Null_commands. 
+The Null_command is a message with does not require a response. Its only goal is to deliver a temporal information, in order to preserve the synchronization between components. Mostly, the initiator doesn't stop when the null_command message is sent, except if it is waiting for the response from a transaction. This messages allows the interconnects to respect their time quantums, regarding to its targets. It is also used to perform the Active_Sync on initiators. The message scope is local, it cannot be routed or redirected. Receiving a null_command awakes the target if it is waiting. Initiators and interconnects can send Null_commands. 
 {{{#!c++  
 tlm::tlm_generic_payload *payload_ptr = new tlm::tlm_generic_payload();
 soclib_payload_extension *extension_ptr = new soclib_payload_extension();
 
+//set as a null_command - 2 methods
 extension_ptr->set_null_command();
+extension_ptr->set_command(PDES_NULL_COMMAND);
 // set the extension to tlm payload
 payload_ptr->set_extension (extension_ptr);
@@ -140 +142 @@
 //set the local time to transaction time
 time = m_pdes_local_time->get();
-//send a message with command equals to PDES_ACTIVE or PDES_INACTIVE
 p_vci_init->nb_transport_fw(*payload_ptr, phase, time);
 
@@ -157 +158 @@
 //Set the Null_response flag - 2 methods
 extension_ptr->set_null_response();
-extension_ptr->set_vci_response(false);
+extension_ptr->set_command(PDES_NULL_RESPONSE);
 //set the tlm phase
 phase = tlm::BEGIN_RSP;
 //set the local time to transaction time
 time = m_pdes_local_time->get();
-//send a message with command equals to PDES_ACTIVE or PDES_INACTIVE
 p_vci_target->nb_transport_bw(*payload_ptr, phase, time);
 
 //Retrieve information
 extension_ptr->is_null_response();
-extension_ptr->is_vci_response();
 }}}
 
 === 2.4. PDES Sync transaction
+The Sync transaction is composed of a command and a response. It is used by initiators which went ahead their quantum, in order to keep the synchronization between initiators connected on the same interconnect. The transaction's scope is local. Its response is sent when it is arbitrated on the interconnect. This means that every other initiators connected to this interconnect got a higher time, so it can pursue its treatment until the next quantum.
+
+{{{#!c++
+//... Initiator  
+tlm::tlm_generic_payload *payload_ptr = new tlm::tlm_generic_payload();
+soclib_payload_extension *extension_ptr = new soclib_payload_extension();
+
+//Set the Sync_cmd flag - 2 methods
+extension_ptr->set_sync();
+extension_ptr->set_command(PDES_SYNC);
+
+//set the tlm phase
+phase = tlm::BEGIN_REQ;
+//set the local time to transaction time
+time = m_pdes_local_time->get();
+p_vci_initiator->nb_transport_fw(*payload_ptr, phase, time);
+wait(m_rspEvent);
+
+//... Interconnect
+//Retrieve information
+extension_ptr->is_sync();
+//when arbitrated, send the response
+phase = tlm::BEGIN_RSP;
+p_vci_target->nb_transport_bw(*payload_ptr, phase, time);
+
+//... Initiator (callback function)
+//Sync is done, initiator can pursue its treatment
+if(extension_ptr->is_sync()){
+   notify(m_rspEvent);
+}
+
+}}}
+
 === 2.5. Passive_Sync / Active_Sync
 
@@ -182 +214 @@
 == 10. Proof of the deadlock free feature
 == 11. Locating the loss in precision
+== 12. Adjust precision / performance for a simulation