MatchLib: ArbitratedCrossbar< DataType, NumInputs, NumOutputs, LenInputBuffer, LenOutputBuffer > Class Template Reference

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Crossbar with conflict arbitration and input queuing. More...

#include <arbitrated_crossbar.h>

Public Member Functions
typedef	NVUINTW (log2_inputs) InputIdx

typedef	NVUINTW (log2_outputs) OutputIdx

void	reset ()

bool	isInputEmpty (InputIdx index)

bool	isOutputEmpty (OutputIdx index)

bool	isInputFull (InputIdx index)

bool	isOutputFull (OutputIdx index)

void	push (DataType data, InputIdx src, OutputIdx dest)

DataType	peek (OutputIdx index)

DataType	pop (OutputIdx index)

void	xbar (DataDest input_data[NumInputs], bool input_valid[NumInputs], bool input_consumed[NumInputs], DataType data_out[NumOutputs], bool valid_out[NumOutputs], bool output_ready[NumOutputs], InputIdx source[NumOutputs])

bool	isAllInputEmpty ()

bool	isAllOutputEmpty ()

bool	isAllInputReady ()

void	pop_all_lanes (bool valid_out[NumOutputs])

void	run (DataType data_in[NumInputs], OutputIdx dest_in[NumInputs], bool valid_in[NumInputs], DataType data_out[NumOutputs], bool valid_out[NumOutputs], bool ready[NumInputs], InputIdx source[NumOutputs])
	Top-Level function for Arbitrated Crossbar.

void	run (DataType data_in[NumInputs], OutputIdx dest_in[NumInputs], bool valid_in[NumInputs], DataType data_out[NumOutputs], bool valid_out[NumOutputs], bool ready[NumInputs])
	Top-Level function for Arbitrated Crossbar that does not return source.

Static Public Attributes
static const int	log2_inputs = nvhls::index_width<NumInputs>::val

static const int	log2_outputs = nvhls::index_width<NumOutputs>::val

Detailed Description

template<typename DataType, unsigned int NumInputs, unsigned int NumOutputs, unsigned int LenInputBuffer, unsigned int LenOutputBuffer>
class ArbitratedCrossbar< DataType, NumInputs, NumOutputs, LenInputBuffer, LenOutputBuffer >

Crossbar with conflict arbitration and input queuing.

Template Parameters

DataType	DataType if input and output
NumInputs	Number of Inputs
NumOutputs	Number of Outputs
LenInputBuffer	Length of Input Buffer
LenOutputBuffer	Length of Output Buffer

A Simple Example: #include <arbitrated_crossbar.h>

...

ArbitratedCrossbar<DataType, NumInputs, NumOutputs, InputQueueLen, OutputQueueLen> xbar;

xbar.reset(); // optional in this case, suitable if xbar is a class member rather than local variable

DataType data_in[NumInputs]; // Array of inputs containing data

OutputIdx dest_in[NumInputs]; // Array of inputs containing destination information for each input

bool valid_in[NumInputs]; // Array of inputs indicating if the input is valid

DataType data_out[NumOutputs]; // Array of outputs containing data

bool valid_out[NumOutputs]; // Array of outputs indicating if the output is valid

bool ready[NumInputs]; // Array of outputs indicating if an input was ready. This also indicates of the input was successfully received by arbitrated Xbar

InputIdx source[NumOutputs]; // Source id of input forwarded to each output

...

xbar.run(bank_req, bank_sel, bank_req_valid, bank_req_winner,

bank_req_winner_valid, input_ready, source);

...

Definition at line 88 of file arbitrated_crossbar.h.

Constructor & Destructor Documentation

◆ ArbitratedCrossbar()

template<typename DataType , unsigned int NumInputs, unsigned int NumOutputs, unsigned int LenInputBuffer, unsigned int LenOutputBuffer>

ArbitratedCrossbar< DataType, NumInputs, NumOutputs, LenInputBuffer, LenOutputBuffer >::ArbitratedCrossbar ( )

inline

Definition at line 143 of file arbitrated_crossbar.h.

Member Function Documentation

◆ reset()

template<typename DataType , unsigned int NumInputs, unsigned int NumOutputs, unsigned int LenInputBuffer, unsigned int LenOutputBuffer>

void ArbitratedCrossbar< DataType, NumInputs, NumOutputs, LenInputBuffer, LenOutputBuffer >::reset ( )

inline

Definition at line 146 of file arbitrated_crossbar.h.

◆ isInputEmpty()

template<typename DataType , unsigned int NumInputs, unsigned int NumOutputs, unsigned int LenInputBuffer, unsigned int LenOutputBuffer>

bool ArbitratedCrossbar< DataType, NumInputs, NumOutputs, LenInputBuffer, LenOutputBuffer >::isInputEmpty ( InputIdx index )

inline

Definition at line 159 of file arbitrated_crossbar.h.

◆ isOutputEmpty()

template<typename DataType , unsigned int NumInputs, unsigned int NumOutputs, unsigned int LenInputBuffer, unsigned int LenOutputBuffer>

bool ArbitratedCrossbar< DataType, NumInputs, NumOutputs, LenInputBuffer, LenOutputBuffer >::isOutputEmpty ( OutputIdx index )

inline

Definition at line 164 of file arbitrated_crossbar.h.

◆ isInputFull()

template<typename DataType , unsigned int NumInputs, unsigned int NumOutputs, unsigned int LenInputBuffer, unsigned int LenOutputBuffer>

bool ArbitratedCrossbar< DataType, NumInputs, NumOutputs, LenInputBuffer, LenOutputBuffer >::isInputFull ( InputIdx index )

inline

Definition at line 169 of file arbitrated_crossbar.h.

◆ isOutputFull()

template<typename DataType , unsigned int NumInputs, unsigned int NumOutputs, unsigned int LenInputBuffer, unsigned int LenOutputBuffer>

bool ArbitratedCrossbar< DataType, NumInputs, NumOutputs, LenInputBuffer, LenOutputBuffer >::isOutputFull ( OutputIdx index )

inline

Definition at line 174 of file arbitrated_crossbar.h.

◆ push()

template<typename DataType , unsigned int NumInputs, unsigned int NumOutputs, unsigned int LenInputBuffer, unsigned int LenOutputBuffer>

void ArbitratedCrossbar< DataType, NumInputs, NumOutputs, LenInputBuffer, LenOutputBuffer >::push	(	DataType	data,
		InputIdx	src,
		OutputIdx	dest
	)

inline

Definition at line 180 of file arbitrated_crossbar.h.

◆ peek()

template<typename DataType , unsigned int NumInputs, unsigned int NumOutputs, unsigned int LenInputBuffer, unsigned int LenOutputBuffer>

DataType ArbitratedCrossbar< DataType, NumInputs, NumOutputs, LenInputBuffer, LenOutputBuffer >::peek ( OutputIdx index )

inline

Definition at line 194 of file arbitrated_crossbar.h.

◆ pop()

template<typename DataType , unsigned int NumInputs, unsigned int NumOutputs, unsigned int LenInputBuffer, unsigned int LenOutputBuffer>

DataType ArbitratedCrossbar< DataType, NumInputs, NumOutputs, LenInputBuffer, LenOutputBuffer >::pop ( OutputIdx index )

inline

Definition at line 197 of file arbitrated_crossbar.h.

◆ xbar()

template<typename DataType , unsigned int NumInputs, unsigned int NumOutputs, unsigned int LenInputBuffer, unsigned int LenOutputBuffer>

void ArbitratedCrossbar< DataType, NumInputs, NumOutputs, LenInputBuffer, LenOutputBuffer >::xbar	(	DataDest	input_data[NumInputs],
		bool	input_valid[NumInputs],
		bool	input_consumed[NumInputs],
		DataType	data_out[NumOutputs],
		bool	valid_out[NumOutputs],
		bool	output_ready[NumOutputs],
		InputIdx	source[NumOutputs]
	)

inline

Definition at line 202 of file arbitrated_crossbar.h.

◆ isAllInputEmpty()

template<typename DataType , unsigned int NumInputs, unsigned int NumOutputs, unsigned int LenInputBuffer, unsigned int LenOutputBuffer>

bool ArbitratedCrossbar< DataType, NumInputs, NumOutputs, LenInputBuffer, LenOutputBuffer >::isAllInputEmpty ( )

inline

Definition at line 290 of file arbitrated_crossbar.h.

◆ isAllOutputEmpty()

template<typename DataType , unsigned int NumInputs, unsigned int NumOutputs, unsigned int LenInputBuffer, unsigned int LenOutputBuffer>

bool ArbitratedCrossbar< DataType, NumInputs, NumOutputs, LenInputBuffer, LenOutputBuffer >::isAllOutputEmpty ( )

inline

Definition at line 300 of file arbitrated_crossbar.h.

◆ isAllInputReady()

template<typename DataType , unsigned int NumInputs, unsigned int NumOutputs, unsigned int LenInputBuffer, unsigned int LenOutputBuffer>

bool ArbitratedCrossbar< DataType, NumInputs, NumOutputs, LenInputBuffer, LenOutputBuffer >::isAllInputReady ( )

inline

Definition at line 310 of file arbitrated_crossbar.h.

◆ pop_all_lanes()

template<typename DataType , unsigned int NumInputs, unsigned int NumOutputs, unsigned int LenInputBuffer, unsigned int LenOutputBuffer>

void ArbitratedCrossbar< DataType, NumInputs, NumOutputs, LenInputBuffer, LenOutputBuffer >::pop_all_lanes ( bool valid_out[NumOutputs] )

inline

Definition at line 321 of file arbitrated_crossbar.h.

Member Data Documentation

◆ log2_inputs

template<typename DataType , unsigned int NumInputs, unsigned int NumOutputs, unsigned int LenInputBuffer, unsigned int LenOutputBuffer>

const int ArbitratedCrossbar< DataType, NumInputs, NumOutputs, LenInputBuffer, LenOutputBuffer >::log2_inputs = nvhls::index_width<NumInputs>::val

static

Definition at line 92 of file arbitrated_crossbar.h.

◆ log2_outputs

template<typename DataType , unsigned int NumInputs, unsigned int NumOutputs, unsigned int LenInputBuffer, unsigned int LenOutputBuffer>

const int ArbitratedCrossbar< DataType, NumInputs, NumOutputs, LenInputBuffer, LenOutputBuffer >::log2_outputs = nvhls::index_width<NumOutputs>::val

static

Definition at line 93 of file arbitrated_crossbar.h.

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

arbitrated_crossbar.h