xpciepsu_ep.c File Reference

Overview

Implements all of functions for psu_pci IP EndPoint driver.

MODIFICATION HISTORY:

Ver   Who  Date     Changes



1.0     tk      02/13/2019      First release

Functions
void	XPciePsu_EP_CfgInitialize (XPciePsu *PciePsuPtr, XPciePsu_Config *ConfigPtr)
	This function initializes the config space. More...
void	XPciePsu_EP_BridgeInitialize (XPciePsu *PciePsuPtr)
	This function initializes PCIe bridge. More...
void	XPciePsu_EP_WaitForLinkup (XPciePsu *PciePsuPtr)
	This function waits for Pcie link to come up. More...
void	XPciePsu_EP_WaitForEnumeration (XPciePsu *PciePsuPtr)
	This function waits for host to enumerate. More...
void	XPciePSU_ReadBar (XPciePsu *PciePsuPtr, u32 BarNum, u32 *BarLo, u32 *BarHi)
	This function read bar address of specific bar number. More...
int	XPciePsu_EP_SetupIngress (XPciePsu *PciePsuPtr, u32 IngressNum, u32 BarNum, u64 Dst)
	This function sets up ingress translation. More...

Function Documentation

void XPciePsu_EP_BridgeInitialize

(

XPciePsu *

PciePsuPtr

)

This function initializes PCIe bridge.

Parameters

PciePsuPtr

pointer to XPciePsu Instance Pointer

Referenced by main().

void XPciePsu_EP_CfgInitialize	(	XPciePsu *	PciePsuPtr,
		XPciePsu_Config *	ConfigPtr
	)

This function initializes the config space.

Parameters

PciePsuPtr	pointer to XPciePsu Instance Pointer
ConfigPtr	pointer to XPciePsu_Config instrance Pointer.

Returns

XST_SUCCESS on success err on failure

Referenced by XPciePsu_InitEndPoint().

int XPciePsu_EP_SetupIngress	(	XPciePsu *	PciePsuPtr,
		u32	IngressNum,
		u32	BarNum,
		u64	Dst
	)

This function sets up ingress translation.

Parameters

PciePsuPtr	pointer to XPciePsu_Config Instance Pointer
IngressNum	ingress must be 0 to 7
BarNum	bar no to setup ingress
Dst	32 or 64 bit destination address

XST_SUCCESS if setup is successful XST_FAILURE if setup is fail

References XPciePSU_ReadBar().

Referenced by main().

void XPciePsu_EP_WaitForEnumeration

(

XPciePsu *

PciePsuPtr

)

This function waits for host to enumerate.

On x86 BIOS sets memory enable bit On ARM64 it is set when driver gets inserted

Parameters

PciePsuPtr

pointer to XPciePsu_Config Instance Pointer

Referenced by main().

void XPciePsu_EP_WaitForLinkup

(

XPciePsu *

PciePsuPtr

)

This function waits for Pcie link to come up.

Parameters

PciePsuPtr

pointer to XPciePsu_Config Instance Pointer

Referenced by main().

void XPciePSU_ReadBar	(	XPciePsu *	PciePsuPtr,
		u32	BarNum,
		u32 *	BarLo,
		u32 *	BarHi
	)

This function read bar address of specific bar number.

Parameters

PciePsuPtr	pointer to XPciePsu_Config Instance Pointer
BarNum
BarLo
BarHi

Referenced by XPciePsu_EP_SetupIngress().