diff options
Diffstat (limited to 'OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.c')
| -rw-r--r-- | OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.c | 394 |
1 files changed, 0 insertions, 394 deletions
diff --git a/OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.c b/OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.c deleted file mode 100644 index caaa9b4ff4..0000000000 --- a/OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.c +++ /dev/null @@ -1,394 +0,0 @@ -/** @file
- This driver produce a BlockIo protocol instance for a Xen PV block device.
-
- This driver support XenBus protocol of type 'vbd'. Every function that
- comsume XenBus protocol are in BlockFront, which the implementation to access
- a Xen PV device. The BlockIo implementation is in it's one file and will call
- BlockFront functions.
-
- Copyright (C) 2014, Citrix Ltd.
-
- This program and the accompanying materials
- are licensed and made available under the terms and conditions of the BSD License
- which accompanies this distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.php
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#include "XenPvBlkDxe.h"
-
-#include "BlockFront.h"
-
-
-///
-/// Driver Binding Protocol instance
-///
-EFI_DRIVER_BINDING_PROTOCOL gXenPvBlkDxeDriverBinding = {
- XenPvBlkDxeDriverBindingSupported,
- XenPvBlkDxeDriverBindingStart,
- XenPvBlkDxeDriverBindingStop,
- XEN_PV_BLK_DXE_VERSION,
- NULL,
- NULL
-};
-
-
-/**
- Unloads an image.
-
- @param ImageHandle Handle that identifies the image to be unloaded.
-
- @retval EFI_SUCCESS The image has been unloaded.
- @retval EFI_INVALID_PARAMETER ImageHandle is not a valid image handle.
-
-**/
-EFI_STATUS
-EFIAPI
-XenPvBlkDxeUnload (
- IN EFI_HANDLE ImageHandle
- )
-{
- EFI_STATUS Status;
-
- EFI_HANDLE *HandleBuffer;
- UINTN HandleCount;
- UINTN Index;
-
-
- //
- // Retrieve array of all handles in the handle database
- //
- Status = gBS->LocateHandleBuffer (
- AllHandles,
- NULL,
- NULL,
- &HandleCount,
- &HandleBuffer
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Disconnect the current driver from handles in the handle database
- //
- for (Index = 0; Index < HandleCount; Index++) {
- gBS->DisconnectController (HandleBuffer[Index], gImageHandle, NULL);
- }
-
- //
- // Free the array of handles
- //
- FreePool (HandleBuffer);
-
-
- //
- // Uninstall protocols installed in the driver entry point
- //
- Status = gBS->UninstallMultipleProtocolInterfaces (
- ImageHandle,
- &gEfiDriverBindingProtocolGuid, &gXenPvBlkDxeDriverBinding,
- &gEfiComponentNameProtocolGuid, &gXenPvBlkDxeComponentName,
- &gEfiComponentName2ProtocolGuid, &gXenPvBlkDxeComponentName2,
- NULL
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- This is the declaration of an EFI image entry point. This entry point is
- the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including
- both device drivers and bus drivers.
-
- @param ImageHandle The firmware allocated handle for the UEFI image.
- @param SystemTable A pointer to the EFI System Table.
-
- @retval EFI_SUCCESS The operation completed successfully.
- @retval Others An unexpected error occurred.
-**/
-EFI_STATUS
-EFIAPI
-XenPvBlkDxeDriverEntryPoint (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- )
-{
- EFI_STATUS Status;
-
- //
- // Install UEFI Driver Model protocol(s).
- //
- Status = EfiLibInstallDriverBindingComponentName2 (
- ImageHandle,
- SystemTable,
- &gXenPvBlkDxeDriverBinding,
- ImageHandle,
- &gXenPvBlkDxeComponentName,
- &gXenPvBlkDxeComponentName2
- );
- ASSERT_EFI_ERROR (Status);
-
- return Status;
-}
-
-
-/**
- Tests to see if this driver supports a given controller. If a child device is provided,
- it further tests to see if this driver supports creating a handle for the specified child device.
-
- This function checks to see if the driver specified by This supports the device specified by
- ControllerHandle. Drivers will typically use the device path attached to
- ControllerHandle and/or the services from the bus I/O abstraction attached to
- ControllerHandle to determine if the driver supports ControllerHandle. This function
- may be called many times during platform initialization. In order to reduce boot times, the tests
- performed by this function must be very small, and take as little time as possible to execute. This
- function must not change the state of any hardware devices, and this function must be aware that the
- device specified by ControllerHandle may already be managed by the same driver or a
- different driver. This function must match its calls to AllocatePages() with FreePages(),
- AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol().
- Because ControllerHandle may have been previously started by the same driver, if a protocol is
- already in the opened state, then it must not be closed with CloseProtocol(). This is required
- to guarantee the state of ControllerHandle is not modified by this function.
-
- @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
- @param[in] ControllerHandle The handle of the controller to test. This handle
- must support a protocol interface that supplies
- an I/O abstraction to the driver.
- @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This
- parameter is ignored by device drivers, and is optional for bus
- drivers. For bus drivers, if this parameter is not NULL, then
- the bus driver must determine if the bus controller specified
- by ControllerHandle and the child controller specified
- by RemainingDevicePath are both supported by this
- bus driver.
-
- @retval EFI_SUCCESS The device specified by ControllerHandle and
- RemainingDevicePath is supported by the driver specified by This.
- @retval EFI_ALREADY_STARTED The device specified by ControllerHandle and
- RemainingDevicePath is already being managed by the driver
- specified by This.
- @retval EFI_ACCESS_DENIED The device specified by ControllerHandle and
- RemainingDevicePath is already being managed by a different
- driver or an application that requires exclusive access.
- Currently not implemented.
- @retval EFI_UNSUPPORTED The device specified by ControllerHandle and
- RemainingDevicePath is not supported by the driver specified by This.
-**/
-EFI_STATUS
-EFIAPI
-XenPvBlkDxeDriverBindingSupported (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE ControllerHandle,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
- )
-{
- EFI_STATUS Status;
- XENBUS_PROTOCOL *XenBusIo;
-
- Status = gBS->OpenProtocol (
- ControllerHandle,
- &gXenBusProtocolGuid,
- (VOID **)&XenBusIo,
- This->DriverBindingHandle,
- ControllerHandle,
- EFI_OPEN_PROTOCOL_BY_DRIVER
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
- if (AsciiStrCmp (XenBusIo->Type, "vbd") == 0) {
- Status = EFI_SUCCESS;
- } else {
- Status = EFI_UNSUPPORTED;
- }
-
- gBS->CloseProtocol (ControllerHandle, &gXenBusProtocolGuid,
- This->DriverBindingHandle, ControllerHandle);
-
- return Status;
-}
-
-/**
- Starts a device controller.
-
- The Start() function is designed to be invoked from the EFI boot service ConnectController().
- As a result, much of the error checking on the parameters to Start() has been moved into this
- common boot service. It is legal to call Start() from other locations,
- but the following calling restrictions must be followed, or the system behavior will not be deterministic.
- 1. ControllerHandle must be a valid EFI_HANDLE.
- 2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned
- EFI_DEVICE_PATH_PROTOCOL.
- 3. Prior to calling Start(), the Supported() function for the driver specified by This must
- have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.
-
- @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
- @param[in] ControllerHandle The handle of the controller to start. This handle
- must support a protocol interface that supplies
- an I/O abstraction to the driver.
- @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This
- parameter is ignored by device drivers, and is optional for bus
- drivers. For a bus driver, if this parameter is NULL, then handles
- for all the children of Controller are created by this driver.
- If this parameter is not NULL and the first Device Path Node is
- not the End of Device Path Node, then only the handle for the
- child device specified by the first Device Path Node of
- RemainingDevicePath is created by this driver.
- If the first Device Path Node of RemainingDevicePath is
- the End of Device Path Node, no child handle is created by this
- driver.
-
- @retval EFI_SUCCESS The device was started.
- @retval EFI_DEVICE_ERROR The device could not be started due to a device error.Currently not implemented.
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
- @retval Others The driver failded to start the device.
-
-**/
-EFI_STATUS
-EFIAPI
-XenPvBlkDxeDriverBindingStart (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE ControllerHandle,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
- )
-{
- EFI_STATUS Status;
- XENBUS_PROTOCOL *XenBusIo;
- XEN_BLOCK_FRONT_DEVICE *Dev;
- EFI_BLOCK_IO_MEDIA *Media;
-
- Status = gBS->OpenProtocol (
- ControllerHandle,
- &gXenBusProtocolGuid,
- (VOID **)&XenBusIo,
- This->DriverBindingHandle,
- ControllerHandle,
- EFI_OPEN_PROTOCOL_BY_DRIVER
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- Status = XenPvBlockFrontInitialization (XenBusIo, XenBusIo->Node, &Dev);
- if (EFI_ERROR (Status)) {
- goto CloseProtocol;
- }
-
- CopyMem (&Dev->BlockIo, &gXenPvBlkDxeBlockIo, sizeof (EFI_BLOCK_IO_PROTOCOL));
- Media = AllocateCopyPool (sizeof (EFI_BLOCK_IO_MEDIA),
- &gXenPvBlkDxeBlockIoMedia);
- if (Dev->MediaInfo.VDiskInfo & VDISK_REMOVABLE) {
- Media->RemovableMedia = TRUE;
- }
- Media->MediaPresent = TRUE;
- Media->ReadOnly = !Dev->MediaInfo.ReadWrite;
- if (Dev->MediaInfo.CdRom) {
- //
- // If it's a cdrom, the blocksize value need to be 2048 for OVMF to
- // recognize it as a cdrom:
- // MdeModulePkg/Universal/Disk/PartitionDxe/ElTorito.c
- //
- Media->BlockSize = 2048;
- Media->LastBlock = DivU64x32 (Dev->MediaInfo.Sectors,
- Media->BlockSize / Dev->MediaInfo.SectorSize) - 1;
- } else {
- Media->BlockSize = Dev->MediaInfo.SectorSize;
- Media->LastBlock = Dev->MediaInfo.Sectors - 1;
- }
- ASSERT (Media->BlockSize % 512 == 0);
- Dev->BlockIo.Media = Media;
-
- Status = gBS->InstallMultipleProtocolInterfaces (
- &ControllerHandle,
- &gEfiBlockIoProtocolGuid, &Dev->BlockIo,
- NULL
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR, "XenPvBlk: install protocol fail: %r\n", Status));
- goto UninitBlockFront;
- }
-
- return EFI_SUCCESS;
-
-UninitBlockFront:
- FreePool (Media);
- XenPvBlockFrontShutdown (Dev);
-CloseProtocol:
- gBS->CloseProtocol (ControllerHandle, &gXenBusProtocolGuid,
- This->DriverBindingHandle, ControllerHandle);
- return Status;
-}
-
-/**
- Stops a device controller.
-
- The Stop() function is designed to be invoked from the EFI boot service DisconnectController().
- As a result, much of the error checking on the parameters to Stop() has been moved
- into this common boot service. It is legal to call Stop() from other locations,
- but the following calling restrictions must be followed, or the system behavior will not be deterministic.
- 1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this
- same driver's Start() function.
- 2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid
- EFI_HANDLE. In addition, all of these handles must have been created in this driver's
- Start() function, and the Start() function must have called OpenProtocol() on
- ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.
-
- @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
- @param[in] ControllerHandle A handle to the device being stopped. The handle must
- support a bus specific I/O protocol for the driver
- to use to stop the device.
- @param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.
- @param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL
- if NumberOfChildren is 0.
-
- @retval EFI_SUCCESS The device was stopped.
- @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.
-
-**/
-EFI_STATUS
-EFIAPI
-XenPvBlkDxeDriverBindingStop (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE ControllerHandle,
- IN UINTN NumberOfChildren,
- IN EFI_HANDLE *ChildHandleBuffer OPTIONAL
- )
-{
- EFI_BLOCK_IO_PROTOCOL *BlockIo;
- XEN_BLOCK_FRONT_DEVICE *Dev;
- EFI_BLOCK_IO_MEDIA *Media;
- EFI_STATUS Status;
-
- Status = gBS->OpenProtocol (
- ControllerHandle, &gEfiBlockIoProtocolGuid,
- (VOID **)&BlockIo,
- This->DriverBindingHandle, ControllerHandle,
- EFI_OPEN_PROTOCOL_GET_PROTOCOL
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- Status = gBS->UninstallProtocolInterface (ControllerHandle,
- &gEfiBlockIoProtocolGuid, BlockIo);
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- Media = BlockIo->Media;
- Dev = XEN_BLOCK_FRONT_FROM_BLOCK_IO (BlockIo);
- XenPvBlockFrontShutdown (Dev);
-
- FreePool (Media);
-
- gBS->CloseProtocol (ControllerHandle, &gXenBusProtocolGuid,
- This->DriverBindingHandle, ControllerHandle);
-
- return EFI_SUCCESS;
-}
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