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

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 66 of file arbitrated_crossbar.h.

---

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

• arbitrated_crossbar.h