GenericInterfaceNB Class Reference

link arrival can be for a flit or credit. FLIT: Add incoming flit to buffer and send a credit back. Credit for the tail flit is not sent here. This is held till we know the ejection port is free. ( This is modelled here for the additional MC backpressure modelling and need not be this way). CREDIT: Update state for downstream credits. Generate a TICK event at the end of it. This will restart the interface if it is blocked on a credit(outgoing path) or initiate a new packet(incoming path).

Definition at line 198 of file genericInterfaceNB.cc.

References _DBG, HeadFlit::addr, NetworkComponent::address, GenericBuffer::change_push_channel(), CREDIT_ID, downstream_credits, IrisEvent::event_data, FLIT_ID, flits_in, HEAD, in_buffer, Interface::input_connection, is_mc_interface, istat, LINK_ARRIVAL_EVENT, Simulator::Now(), ONE_FLIT_REQ, packets_in, process_event(), NetworkComponent::process_event(), LinkArrivalData::ptr, GenericBuffer::push(), Simulator::Schedule(), IrisStats::stat_link, TAIL, TICK_EVENT, ticking, total_packets_in_time, IrisEvent::type, Flit::type, LinkArrivalData::type, LinkArrivalData::valid, IrisEvent::vc, Flit::vc, and LinkArrivalData::vc.

Referenced by process_event().

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void GenericInterfaceNB::handle_new_packet_event ( IrisEvent * e ) [private]

Definition at line 289 of file genericInterfaceNB.cc.

References _DBG, HighLevelPacket::addr, IrisEvent::event_data, is_mc_interface, Simulator::Now(), out_packet_flit_index, out_packets, NetworkComponent::process_event(), Simulator::Schedule(), TICK_EVENT, ticking, HighLevelPacket::to_low_level_packet(), HighLevelPacket::toString(), IrisEvent::vc, and HighLevelPacket::virtual_channel.

Referenced by process_event().

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void GenericInterfaceNB::handle_ready_event ( IrisEvent * e ) [private]

These are credits from the processor and hence do not update flow control state. Flow control state is updated at the link arrival event for a credit.

Definition at line 162 of file genericInterfaceNB.cc.

References _DBG, in_ready, is_mc_interface, Simulator::Now(), NetworkComponent::process_event(), Simulator::Schedule(), TICK_EVENT, ticking, and IrisEvent::vc.

Referenced by process_event().

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void GenericInterfaceNB::handle_tick_event ( IrisEvent * e ) [private]

Definition at line 332 of file genericInterfaceNB.cc.

References _DBG, HighLevelPacket::addr, HeadFlit::addr, NetworkComponent::address, HighLevelPacket::avg_network_latency, GenericBuffer::change_pull_channel(), GenericBuffer::change_push_channel(), GenericArbiter::clear_winner(), CREDIT_ID, downstream_credits, IrisEvent::event_data, flast_vc, FLIT_ID, flits_out, HighLevelPacket::from_low_level_packet(), GenericBuffer::get_occupancy(), HEAD, HighLevelPacket::hop_count, in_buffer, in_packet_complete, in_packets, in_packets_flit_index, in_ready, Interface::input_connection, GenericArbiter::is_empty(), is_mc_interface, istat, LINK_ARRIVAL_EVENT, NEW_PACKET_EVENT, NetworkComponent::node_ip, Simulator::Now(), ONE_FLIT_REQ, out_arbiter, out_buffer, out_packet_flit_index, out_packets, Interface::output_connection, packets_out, GenericArbiter::pick_winner(), process_event(), NetworkComponent::process_event(), Interface::processor_connection, LinkArrivalData::ptr, GenericBuffer::pull(), GenericBuffer::push(), READY_EVENT, HighLevelPacket::recv_time, HighLevelPacket::req_start_time, GenericArbiter::request(), Simulator::Schedule(), IrisEvent::src_id, IrisStats::stat_link, TAIL, TICK_EVENT, ticking, IrisEvent::type, Flit::type, LinkArrivalData::type, IrisEvent::vc, LinkArrivalData::vc, Flit::vc, vcs, HighLevelPacket::virtual_channel, and HighLevelPacket::waiting_in_ni.

Referenced by process_event().

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string GenericInterfaceNB::print_stats ( void ) [virtual]

Implements Interface.

Definition at line 574 of file genericInterfaceNB.cc.

References flits_in, flits_out, NetworkComponent::node_ip, packets_in, packets_out, and total_packets_in_time.

void GenericInterfaceNB::process_event ( IrisEvent * e ) [virtual]

READY_EVENT: A ready is the credit at a packet level with the injection/ejection point

LINK_ARRIVAL_EVENT: This is a flit/credit arrival from the network. (Incoming path)

NEW_PACKET_EVENT: This is a high level packet from the processor connected to this node

TICK_EVENT: Update internal state of the interface. This involves two distinct paths ( Incoming and Outgoing ). Push flits into the output buffer and send them out after all flits for a packet are moved to the output buffer(Outgoing path). Push flits from the input buffer to a low level packet. Convert the low level packet to a high level packet when complete and then send it to the injection processor connected to this node (Incoming path).

Implements Interface.

Definition at line 122 of file genericInterfaceNB.cc.

References handle_link_arrival(), handle_new_packet_event(), handle_ready_event(), handle_tick_event(), LINK_ARRIVAL_EVENT, NEW_PACKET_EVENT, READY_EVENT, TICK_EVENT, and IrisEvent::type.

Referenced by handle_link_arrival(), and handle_tick_event().

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void GenericInterfaceNB::set_buffer_size ( uint b ) [virtual]

Implements Interface.

Definition at line 117 of file genericInterfaceNB.cc.

void GenericInterfaceNB::set_no_credits ( int credits ) [virtual]

Implements Interface.

Definition at line 101 of file genericInterfaceNB.cc.

void GenericInterfaceNB::set_no_vcs ( uint v ) [virtual]

Implements Interface.

Definition at line 112 of file genericInterfaceNB.cc.

void GenericInterfaceNB::setup	(	uint	v,
		uint	cr,
		uint	bs
	)			`[virtual]`

Implements Interface.

Definition at line 37 of file genericInterfaceNB.cc.

References NetworkComponent::address, buffer_size, credits, downstream_credits, flast_vc, flits_in, flits_out, in_buffer, in_packet_complete, in_packets, in_packets_flit_index, in_packets_valid, in_ready, Component::myId(), out_arbiter, out_buffer, out_packet_flit_index, out_packets, packets_in, packets_out, GenericBuffer::resize(), GenericArbiter::set_no_requestors(), ticking, total_packets_in_time, and vcs.

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string GenericInterfaceNB::toString ( ) const [virtual]

Reimplemented from Interface.

Definition at line 88 of file genericInterfaceNB.cc.

References NetworkComponent::address, in_buffer, NetworkComponent::node_ip, out_buffer, out_packets, and GenericBuffer::toString().

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Member Data Documentation

uint GenericInterfaceNB::buffer_size [private]

Definition at line 73 of file genericInterfaceNB.h.

Referenced by setup().

int GenericInterfaceNB::credits [private]

Definition at line 74 of file genericInterfaceNB.h.

Referenced by get_no_credits(), and setup().

vector< int > GenericInterfaceNB::downstream_credits [private]

Definition at line 83 of file genericInterfaceNB.h.

Referenced by handle_link_arrival(), handle_tick_event(), and setup().

uint GenericInterfaceNB::flast_vc [private]

Definition at line 77 of file genericInterfaceNB.h.

Referenced by handle_tick_event(), and setup().

ullint GenericInterfaceNB::flits_in [private]

Definition at line 103 of file genericInterfaceNB.h.

Referenced by handle_link_arrival(), print_stats(), and setup().

ullint GenericInterfaceNB::flits_out [private]

Definition at line 105 of file genericInterfaceNB.h.

Referenced by get_flits_out(), handle_tick_event(), print_stats(), and setup().

GenericBuffer GenericInterfaceNB::in_buffer [private]

Definition at line 81 of file genericInterfaceNB.h.

Referenced by handle_link_arrival(), handle_tick_event(), setup(), and toString().

bool GenericInterfaceNB::in_packet_cleared [private]

Definition at line 75 of file genericInterfaceNB.h.

vector<bool> GenericInterfaceNB::in_packet_complete [private]

Definition at line 76 of file genericInterfaceNB.h.

Referenced by handle_tick_event(), and setup().

vector< LowLevelPacket> GenericInterfaceNB::in_packets [private]

Definition at line 90 of file genericInterfaceNB.h.

Referenced by handle_tick_event(), setup(), and ~GenericInterfaceNB().

vector< uint > GenericInterfaceNB::in_packets_flit_index [private]

Definition at line 91 of file genericInterfaceNB.h.

Referenced by handle_tick_event(), and setup().

vector< bool> GenericInterfaceNB::in_packets_valid [private]

Definition at line 92 of file genericInterfaceNB.h.

Referenced by setup().

vector< bool > GenericInterfaceNB::in_ready [private]

Definition at line 94 of file genericInterfaceNB.h.

Referenced by handle_ready_event(), handle_tick_event(), and setup().

bool GenericInterfaceNB::is_mc_interface

Definition at line 67 of file genericInterfaceNB.h.

Referenced by handle_link_arrival(), handle_new_packet_event(), handle_ready_event(), and handle_tick_event().

GenericArbiter GenericInterfaceNB::out_arbiter [private]

Definition at line 82 of file genericInterfaceNB.h.

Referenced by handle_tick_event(), and setup().

GenericBuffer GenericInterfaceNB::out_buffer [private]

Definition at line 80 of file genericInterfaceNB.h.

Referenced by handle_tick_event(), setup(), and toString().

vector< uint > GenericInterfaceNB::out_packet_flit_index [private]

Definition at line 87 of file genericInterfaceNB.h.

Referenced by handle_new_packet_event(), handle_tick_event(), and setup().

vector< LowLevelPacket> GenericInterfaceNB::out_packets [private]

Definition at line 86 of file genericInterfaceNB.h.

Referenced by handle_new_packet_event(), handle_tick_event(), setup(), toString(), and ~GenericInterfaceNB().

ullint GenericInterfaceNB::packets_in [private]

Definition at line 104 of file genericInterfaceNB.h.

Referenced by get_packets(), handle_link_arrival(), print_stats(), and setup().

ullint GenericInterfaceNB::packets_out [private]

Definition at line 106 of file genericInterfaceNB.h.

Referenced by get_packets(), get_packets_out(), handle_tick_event(), print_stats(), and setup().

bool GenericInterfaceNB::ticking [private]

Definition at line 79 of file genericInterfaceNB.h.

Referenced by GenericInterfaceNB(), handle_link_arrival(), handle_new_packet_event(), handle_ready_event(), handle_tick_event(), and setup().

ullint GenericInterfaceNB::total_packets_in_time [private]

Definition at line 107 of file genericInterfaceNB.h.

Referenced by handle_link_arrival(), print_stats(), and setup().

uint GenericInterfaceNB::vcs [private]

Definition at line 72 of file genericInterfaceNB.h.

Referenced by handle_tick_event(), and setup().

The documentation for this class was generated from the following files:


Public Member Functions
	GenericInterfaceNB ()
	~GenericInterfaceNB ()
uint	get_no_credits () const
void	set_no_credits (int credits)
void	set_no_vcs (uint v)
void	set_buffer_size (uint b)
void	setup (uint v, uint cr, uint bs)
string	toString () const
void	process_event (IrisEvent *e)
string	print_stats ()
ullint	get_packets_out ()
ullint	get_packets ()
ullint	get_flits_out ()
Public Attributes
bool	is_mc_interface
Private Member Functions
void	handle_new_packet_event (IrisEvent *e)
void	handle_ready_event (IrisEvent *e)
void	handle_tick_event (IrisEvent *e)
void	handle_link_arrival (IrisEvent *e)
Private Attributes
uint	vcs
uint	buffer_size
int	credits
bool	in_packet_cleared
vector< bool >	in_packet_complete
uint	flast_vc
bool	ticking
GenericBuffer	out_buffer
GenericBuffer	in_buffer
GenericArbiter	out_arbiter
vector< int >	downstream_credits
vector< LowLevelPacket >	out_packets
vector< uint >	out_packet_flit_index
vector< LowLevelPacket >	in_packets
vector< uint >	in_packets_flit_index
vector< bool >	in_packets_valid
vector< bool >	in_ready
ullint	flits_in
ullint	packets_in
ullint	flits_out
ullint	packets_out
ullint	total_packets_in_time