#include <Library/BaseLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/DevicePathLib.h>
#include <Library/XenIoMmioLib.h>
#include <Protocol/XenIo.h>
#include <Guid/XenBusRootDevice.h>

Data Structures
struct	XENBUS_ROOT_DEVICE_PATH

Functions
EFI_STATUS	XenIoMmioInstall (IN OUT EFI_HANDLE *Handle, IN EFI_PHYSICAL_ADDRESS GrantTableAddress)

EFI_STATUS	XenIoMmioUninstall (IN EFI_HANDLE Handle)

Variables
STATIC CONST XENBUS_ROOT_DEVICE_PATH	mXenBusRootDevicePathTemplate

Detailed Description

Manage XenBus device path and I/O handles

SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file XenIoMmioLib.c.

Function Documentation

◆ XenIoMmioInstall()

EFI_STATUS XenIoMmioInstall	(	IN OUT EFI_HANDLE *	Handle,
		IN EFI_PHYSICAL_ADDRESS	GrantTableAddress
	)

Install the XENBUS_ROOT_DEVICE_PATH and XENIO_PROTOCOL protocols on the handle pointed to by @Handle, or on a new handle if it points to NULL

Parameters

Handle	Pointer to the handle to install the protocols on, may point to a NULL handle.
GrantTableAddress	The address of the Xen grant table

Return values

EFI_SUCCESS	Protocols were installed successfully
EFI_OUT_OF_RESOURCES	The function failed to allocate memory required by the XenIo MMIO and device path protocols

Returns: Status code returned by the boot service InstallMultipleProtocolInterfaces ()

Definition at line 68 of file XenIoMmioLib.c.

◆ XenIoMmioUninstall()

EFI_STATUS XenIoMmioUninstall ( IN EFI_HANDLE Handle )

Uninstall the XENBUS_ROOT_DEVICE_PATH and XENIO_PROTOCOL protocols

Parameters

Handle Handle onto which the protocols have been installed earlier by XenIoMmioInstall ()

Return values

EFI_SUCCESS Protocols were uninstalled successfully

Returns: Status code returned by the boot service UninstallMultipleProtocolInterfaces ()

Definition at line 144 of file XenIoMmioLib.c.

Variable Documentation

◆ mXenBusRootDevicePathTemplate

STATIC CONST XENBUS_ROOT_DEVICE_PATH mXenBusRootDevicePathTemplate

Initial value:

= {
  {
    {
      HARDWARE_DEVICE_PATH,
      HW_VENDOR_DP,
      { sizeof (VENDOR_DEVICE_PATH) + sizeof (EFI_PHYSICAL_ADDRESS), 0 }
    },
    XENBUS_ROOT_DEVICE_GUID,
  },
  0,
  {
    END_DEVICE_PATH_TYPE,
    END_ENTIRE_DEVICE_PATH_SUBTYPE,
    { sizeof (EFI_DEVICE_PATH_PROTOCOL),                           0 }
  }
}

Definition at line 30 of file XenIoMmioLib.c.

Data Structures