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ArmVirtualizationPkg: add XenIoMmioLib
This adds a XenIoMmioLib declaration and implementation that can be invoked to install the XENIO_PROTOCOL and a corresponding grant table address on a EFI handle. Contributed-under: TianoCore Contribution Agreement 1.0 Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Laszlo Ersek <lersek@redhat.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16979 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Ard Biesheuvel
lersek
parent
b0022ab871
commit
0169352eaa
64
OvmfPkg/Include/Library/XenIoMmioLib.h
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64
OvmfPkg/Include/Library/XenIoMmioLib.h
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@ -0,0 +1,64 @@
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/** @file
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* Manage XenBus device path and I/O handles
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*
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* Copyright (c) 2015, Linaro Ltd. All rights reserved.<BR>
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*
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* This program and the accompanying materials are
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* licensed and made available under the terms and conditions of the BSD License
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* which accompanies this distribution. The full text of the license may be found at
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* http://opensource.org/licenses/bsd-license.php
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*
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* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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*
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**/
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#ifndef _XENIO_MMIO_DEVICE_LIB_H_
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#define _XENIO_MMIO_DEVICE_LIB_H_
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/**
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Install the XENBUS_ROOT_DEVICE_PATH and XENIO_PROTOCOL protocols on
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the handle pointed to by @Handle, or on a new handle if it points to
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NULL
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@param Handle Pointer to the handle to install the protocols
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on, may point to a NULL handle.
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@param GrantTableAddress The address of the Xen grant table
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@retval EFI_SUCCESS Protocols were installed successfully
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@retval EFI_OUT_OF_RESOURCES The function failed to allocate memory required
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by the XenIo MMIO and device path protocols
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@return Status code returned by the boot service
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InstallMultipleProtocolInterfaces ()
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**/
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EFI_STATUS
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XenIoMmioInstall (
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IN OUT EFI_HANDLE *Handle,
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IN EFI_PHYSICAL_ADDRESS GrantTableAddress
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);
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/**
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Uninstall the XENBUS_ROOT_DEVICE_PATH and XENIO_PROTOCOL protocols
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@param Handle Handle onto which the protocols have been installed
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earlier by XenIoMmioInstall ()
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@retval EFI_SUCCESS Protocols were uninstalled successfully
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@return Status code returned by the boot service
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UninstallMultipleProtocolInterfaces ()
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**/
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EFI_STATUS
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XenIoMmioUninstall (
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IN EFI_HANDLE Handle
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);
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#endif
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166
OvmfPkg/Library/XenIoMmioLib/XenIoMmioLib.c
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166
OvmfPkg/Library/XenIoMmioLib/XenIoMmioLib.c
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@ -0,0 +1,166 @@
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/** @file
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* Manage XenBus device path and I/O handles
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*
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* Copyright (c) 2015, Linaro Ltd. All rights reserved.<BR>
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*
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* This program and the accompanying materials are
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* licensed and made available under the terms and conditions of the BSD License
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* which accompanies this distribution. The full text of the license may be found at
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* http://opensource.org/licenses/bsd-license.php
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*
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* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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*
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**/
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#include <Library/BaseLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/DebugLib.h>
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#include <Library/UefiLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/DevicePathLib.h>
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#include <Library/XenIoMmioLib.h>
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#include <Protocol/XenIo.h>
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#include <Guid/XenBusRootDevice.h>
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#pragma pack (1)
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typedef struct {
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VENDOR_DEVICE_PATH Vendor;
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EFI_PHYSICAL_ADDRESS GrantTableAddress;
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EFI_DEVICE_PATH_PROTOCOL End;
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} XENBUS_ROOT_DEVICE_PATH;
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#pragma pack ()
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STATIC CONST XENBUS_ROOT_DEVICE_PATH mXenBusRootDevicePathTemplate = {
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{
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{
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HARDWARE_DEVICE_PATH,
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HW_VENDOR_DP,
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{ sizeof (VENDOR_DEVICE_PATH) + sizeof (EFI_PHYSICAL_ADDRESS), 0 }
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},
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XENBUS_ROOT_DEVICE_GUID,
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},
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0,
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{
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END_DEVICE_PATH_TYPE,
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END_ENTIRE_DEVICE_PATH_SUBTYPE,
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{ sizeof (EFI_DEVICE_PATH_PROTOCOL), 0 }
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}
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};
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/**
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Install the XENBUS_ROOT_DEVICE_PATH and XENIO_PROTOCOL protocols on
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the handle pointed to by @Handle, or on a new handle if it points to
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NULL
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@param Handle Pointer to the handle to install the protocols
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on, may point to a NULL handle.
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@param GrantTableAddress The address of the Xen grant table
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@retval EFI_SUCCESS Protocols were installed successfully
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@retval EFI_OUT_OF_RESOURCES The function failed to allocate memory required
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by the XenIo MMIO and device path protocols
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@return Status code returned by the boot service
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InstallMultipleProtocolInterfaces ()
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**/
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EFI_STATUS
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XenIoMmioInstall (
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IN OUT EFI_HANDLE *Handle,
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IN EFI_PHYSICAL_ADDRESS GrantTableAddress
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)
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{
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EFI_STATUS Status;
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XENIO_PROTOCOL *XenIo;
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XENBUS_ROOT_DEVICE_PATH *XenBusDevicePath;
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EFI_HANDLE OutHandle;
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ASSERT (Handle != NULL);
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OutHandle = *Handle;
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XenIo = AllocateZeroPool (sizeof *XenIo);
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if (!XenIo) {
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return EFI_OUT_OF_RESOURCES;
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}
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XenIo->GrantTableAddress = GrantTableAddress;
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XenBusDevicePath = AllocateCopyPool (sizeof *XenBusDevicePath,
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&mXenBusRootDevicePathTemplate);
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if (!XenBusDevicePath) {
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DEBUG ((EFI_D_ERROR, "%a: Out of memory\n", __FUNCTION__));
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Status = EFI_OUT_OF_RESOURCES;
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goto FreeXenIo;
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}
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XenBusDevicePath->GrantTableAddress = GrantTableAddress;
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Status = gBS->InstallMultipleProtocolInterfaces (&OutHandle,
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&gEfiDevicePathProtocolGuid, XenBusDevicePath,
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&gXenIoProtocolGuid, XenIo,
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NULL);
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if (!EFI_ERROR (Status)) {
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*Handle = OutHandle;
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return EFI_SUCCESS;
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}
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DEBUG ((EFI_D_ERROR, "%a: Failed to install the EFI_DEVICE_PATH and "
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"XENIO_PROTOCOL protocols on handle %p (Status == %r)\n",
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__FUNCTION__, OutHandle, Status));
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FreePool (XenBusDevicePath);
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FreeXenIo:
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FreePool (XenIo);
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return Status;
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}
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/**
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Uninstall the XENBUS_ROOT_DEVICE_PATH and XENIO_PROTOCOL protocols
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@param Handle Handle onto which the protocols have been installed
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earlier by XenIoMmioInstall ()
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@retval EFI_SUCCESS Protocols were uninstalled successfully
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@return Status code returned by the boot service
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UninstallMultipleProtocolInterfaces ()
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**/
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EFI_STATUS
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XenIoMmioUninstall (
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IN EFI_HANDLE Handle
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)
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{
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EFI_STATUS Status;
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VOID *XenIo;
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VOID *XenBusDevicePath;
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XenBusDevicePath = NULL;
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gBS->OpenProtocol (Handle, &gEfiDevicePathProtocolGuid, &XenBusDevicePath,
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NULL, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
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XenIo = NULL;
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gBS->OpenProtocol (Handle, &gXenIoProtocolGuid, &XenIo,
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NULL, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
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Status = gBS->UninstallMultipleProtocolInterfaces (Handle,
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&gEfiDevicePathProtocolGuid, XenBusDevicePath,
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&gXenIoProtocolGuid, XenIo,
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NULL);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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FreePool (XenBusDevicePath);
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FreePool (XenIo);
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return EFI_SUCCESS;
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}
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39
OvmfPkg/Library/XenIoMmioLib/XenIoMmioLib.inf
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39
OvmfPkg/Library/XenIoMmioLib/XenIoMmioLib.inf
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@ -0,0 +1,39 @@
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## @file
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# Manage XenBus device path and I/O handles
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#
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# Copyright (c) 2015, Linaro Ltd. All rights reserved.<BR>
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#
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php.
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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#
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##
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[Defines]
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INF_VERSION = 0x00010005
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BASE_NAME = XenIoMmioLib
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FILE_GUID = de9bdc19-8434-47bb-be3c-7f28f2101fd0
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MODULE_TYPE = DXE_DRIVER
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VERSION_STRING = 1.0
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LIBRARY_CLASS = XenIoMmioLib
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[Sources]
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XenIoMmioLib.c
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[Packages]
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MdePkg/MdePkg.dec
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OvmfPkg/OvmfPkg.dec
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[LibraryClasses]
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BaseMemoryLib
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[Guids]
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gXenBusRootDeviceGuid
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[Protocols]
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gEfiDevicePathProtocolGuid
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gXenIoProtocolGuid
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@ -48,6 +48,10 @@
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#
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XenHypercallLib|Include/Library/XenHypercallLib.h
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## @libraryclass Manage XenBus device path and I/O handles
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#
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XenIoMmioLib|Include/Library/XenIoMmioLib.h
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[Guids]
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gUefiOvmfPkgTokenSpaceGuid = {0x93bb96af, 0xb9f2, 0x4eb8, {0x94, 0x62, 0xe0, 0xba, 0x74, 0x56, 0x42, 0x36}}
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gEfiXenInfoGuid = {0xd3b46f3b, 0xd441, 0x1244, {0x9a, 0x12, 0x0, 0x12, 0x27, 0x3f, 0xc1, 0x4d}}
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