pciepsu: xpciepsu_ep.c File Reference

pciepsu

Vitis Drivers API Documentation

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, const XPciePsu_Config ConfigPtr)
	This function initializes the config space. More...

void	XPciePsu_EP_BridgeInitialize (XPciePsu *PciePsuPtr)
	This function initializes PCIe bridge. More...

void	XPciePsu_Egress_EP_BridgeInitialize (XPciePsu *PciePsuPtr)
	This function initializes Egress 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	Do_Egress_Test (u32 *egress_src_lo)
	This function does Egress test. More...

int	XPciePsu_EP_SetupIngress (XPciePsu *PciePsuPtr, u32 IngressNum, u32 BarNum, u64 Dst)
	This function sets up ingress translation. More...

int	XPciePsu_EP_SetupEgress (XPciePsu *PciePsuPtr, u32 EgressNum)
	This function sets up Egress translation. More...

Function Documentation

void Do_Egress_Test ( u32 * egress_src_lo )

This function does Egress test.

Parameters

egress source address

Referenced by XPciePsu_EP_SetupEgress().

void XPciePsu_Egress_EP_BridgeInitialize ( XPciePsu * PciePsuPtr )

This function initializes Egress PCIe bridge.

Parameters

PciePsuPtr pointer to XPciePsu Instance Pointer

References XPciePsu_ReadReg(), and XPciePsu_WriteReg().

Referenced by main().

void XPciePsu_EP_BridgeInitialize ( XPciePsu * PciePsuPtr )

This function initializes PCIe bridge.

Parameters

PciePsuPtr pointer to XPciePsu Instance Pointer

References XPciePsu_ReadReg(), and XPciePsu_WriteReg().

void XPciePsu_EP_CfgInitialize	(	XPciePsu *	PciePsuPtr,
		const 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_SetupEgress	(	XPciePsu *	PciePsuPtr,
		u32	EgressNum
	)

This function sets up Egress translation.

Parameters

PciePsuPtr	pointer to XPciePsu_Config Instance Pointer
EgressNum	ingress must be 0 to 7

Returns: XST_SUCCESS if setup is successful XST_FAILURE if setup is fail

References Do_Egress_Test(), XPciePsu_ReadReg(), and XPciePsu_WriteReg().

Referenced by main().

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

Returns: XST_SUCCESS if setup is successful XST_FAILURE if setup is fail

References XPciePsu_ReadReg(), and XPciePsu_WriteReg().

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

References XPciePsu_ReadReg().

void XPciePsu_EP_WaitForLinkup ( XPciePsu * PciePsuPtr )

This function waits for Pcie link to come up.

Parameters

PciePsuPtr pointer to XPciePsu_Config Instance Pointer

References XPciePsu_ReadReg().

Referenced by main().