xllfifo.c File Reference

#include "xstatus.h"
#include "xllfifo.h"
#include "xil_assert.h"

Defines
#define	FIFO_WIDTH_BYTES   4
Functions
	xdbg_stmnt (u32 _xllfifo_rr_value;)
u32	XLlFifo_iRxGetLen (XLlFifo *InstancePtr)
int	XLlFifo_iRead_Aligned (XLlFifo *InstancePtr, void *BufPtr, unsigned WordCount)
u32	XLlFifo_iTxVacancy (XLlFifo *InstancePtr)
void	XLlFifo_iTxSetLen (XLlFifo *InstancePtr, u32 Bytes)
int	XLlFifo_iWrite_Aligned (XLlFifo *InstancePtr, void *BufPtr, unsigned WordCount)
int	XLlFifo_CfgInitialize (XLlFifo *InstancePtr, XLlFifo_Config *Config, u32 EffectiveAddress)
u32	XLlFifo_RxGetWord (XLlFifo *InstancePtr)
void	XLlFifo_TxPutWord (XLlFifo *InstancePtr, u32 Word)
void	XLlFifo_Initialize (XLlFifo *InstancePtr, u32 BaseAddress)

---

Detailed Description

The Xilinx local link FIFO driver component. This driver supports the Xilinx xps_ll_fifo core.

 MODIFICATION HISTORY:

 Ver   Who  Date     Changes
 ----- ---- -------- -------------------------------------------------------
 1.00a jvb  10/13/06 First release
 1.00a xd   12/17/07 Added type casting to fix CR #456850
 1.02a jz   12/04/09  Hal phase 1 support
 2.00a hbm  01/20/10  Hal phase 1 support, bump up major release
 2.01a asa  09/17/10  Added code for resetting Streaming interface
		        for CR574868
 3.00a adk  08/10/13  Added support for AXI4 Datainterface.Updated
 		        XLlFifo_RxGetWord, XLlFifo_TxPutword inorder to 
 		        handle AXI4 Datainterface. Added Config 
 		        initialization for the driver.
 

---

Define Documentation

#define FIFO_WIDTH_BYTES   4

---

Function Documentation

xdbg_stmnt

(

u32 _xllfifo_rr_value;

)

int XLlFifo_CfgInitialize	(	XLlFifo *	InstancePtr,
		XLlFifo_Config *	Config,
		u32	EffectiveAddress
	)

XLlFifo_CfgInitialize initializes an XPS_ll_Fifo device along with the InstancePtr that references it.

Parameters:

	InstancePtr	is a pointer to the Axi Streaming FIFO instance to be worked on.
	CfgPtr	references the structure holding the hardware configuration for the Axi Streaming FIFO core to initialize.
	EffectiveAddr	is the device base address in the virtual memory address space. The caller is responsible for keeping the address mapping from EffectiveAddr to the device physical base address unchanged once this function is invoked. Unexpected errors may occur if the address mapping changes after this function is called. If address translation is not used, use Config->BaseAddress for this parameters, passing the physical address instead.

Returns:

N/A

void XLlFifo_Initialize	(	XLlFifo *	InstancePtr,
		u32	BaseAddress
	)

XLlFifo_Initialize initializes an XPS_ll_Fifo device along with the InstancePtr that references it.

Parameters:

	InstancePtr	references the memory instance to be associated with the FIFO device upon initialization.
	BaseAddress	is the processor address used to access the base address of the Fifo device.

Returns:

N/A

int XLlFifo_iRead_Aligned	(	XLlFifo *	InstancePtr,
		void *	BufPtr,
		unsigned	WordCount
	)

u32 XLlFifo_iRxGetLen

(

XLlFifo *

InstancePtr

)

void XLlFifo_iTxSetLen	(	XLlFifo *	InstancePtr,
		u32	Bytes
	)

u32 XLlFifo_iTxVacancy

(

XLlFifo *

InstancePtr

)

int XLlFifo_iWrite_Aligned	(	XLlFifo *	InstancePtr,
		void *	BufPtr,
		unsigned	WordCount
	)

u32 XLlFifo_RxGetWord

(

XLlFifo *

InstancePtr

)

void XLlFifo_TxPutWord	(	XLlFifo *	InstancePtr,
		u32	Word
	)