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Diffstat (limited to 'OvmfPkg/XenBusDxe/XenBusDxe.c')
-rw-r--r--OvmfPkg/XenBusDxe/XenBusDxe.c194
1 files changed, 115 insertions, 79 deletions
diff --git a/OvmfPkg/XenBusDxe/XenBusDxe.c b/OvmfPkg/XenBusDxe/XenBusDxe.c
index 1f5628ad83..132f43a72b 100644
--- a/OvmfPkg/XenBusDxe/XenBusDxe.c
+++ b/OvmfPkg/XenBusDxe/XenBusDxe.c
@@ -32,7 +32,7 @@
///
/// Driver Binding Protocol instance
///
-EFI_DRIVER_BINDING_PROTOCOL gXenBusDxeDriverBinding = {
+EFI_DRIVER_BINDING_PROTOCOL gXenBusDxeDriverBinding = {
XenBusDxeDriverBindingSupported,
XenBusDxeDriverBindingStart,
XenBusDxeDriverBindingStop,
@@ -41,9 +41,8 @@ EFI_DRIVER_BINDING_PROTOCOL gXenBusDxeDriverBinding = {
NULL
};
-
STATIC EFI_LOCK mMyDeviceLock = EFI_INITIALIZE_LOCK_VARIABLE (TPL_CALLBACK);
-STATIC XENBUS_DEVICE *mMyDevice = NULL;
+STATIC XENBUS_DEVICE *mMyDevice = NULL;
/**
Map the shared_info_t page into memory.
@@ -58,16 +57,16 @@ STATIC XENBUS_DEVICE *mMyDevice = NULL;
STATIC
EFI_STATUS
XenGetSharedInfoPage (
- IN OUT XENBUS_DEVICE *Dev
+ IN OUT XENBUS_DEVICE *Dev
)
{
- xen_add_to_physmap_t Parameter;
+ xen_add_to_physmap_t Parameter;
ASSERT (Dev->SharedInfo == NULL);
Parameter.domid = DOMID_SELF;
Parameter.space = XENMAPSPACE_shared_info;
- Parameter.idx = 0;
+ Parameter.idx = 0;
//
// using reserved page because the page is not released when Linux is
@@ -75,7 +74,7 @@ XenGetSharedInfoPage (
// page, and fail because it have no right to do so (segv).
//
Dev->SharedInfo = AllocateReservedPages (1);
- Parameter.gpfn = (UINTN) Dev->SharedInfo >> EFI_PAGE_SHIFT;
+ Parameter.gpfn = (UINTN)Dev->SharedInfo >> EFI_PAGE_SHIFT;
if (XenHypercallMemoryOp (XENMEM_add_to_physmap, &Parameter) != 0) {
FreePages (Dev->SharedInfo, 1);
Dev->SharedInfo = NULL;
@@ -132,15 +131,17 @@ XenBusDxeUnload (
//
FreePool (HandleBuffer);
-
//
// Uninstall protocols installed in the driver entry point
//
Status = gBS->UninstallMultipleProtocolInterfaces (
ImageHandle,
- &gEfiDriverBindingProtocolGuid, &gXenBusDxeDriverBinding,
- &gEfiComponentNameProtocolGuid, &gXenBusDxeComponentName,
- &gEfiComponentName2ProtocolGuid, &gXenBusDxeComponentName2,
+ &gEfiDriverBindingProtocolGuid,
+ &gXenBusDxeDriverBinding,
+ &gEfiComponentNameProtocolGuid,
+ &gXenBusDxeComponentName,
+ &gEfiComponentName2ProtocolGuid,
+ &gXenBusDxeComponentName2,
NULL
);
if (EFI_ERROR (Status)) {
@@ -171,7 +172,7 @@ XenBusDxeDriverEntryPoint (
{
EFI_STATUS Status;
- if (! XenHypercallIsAvailable ()) {
+ if (!XenHypercallIsAvailable ()) {
return EFI_ABORTED;
}
@@ -188,11 +189,9 @@ XenBusDxeDriverEntryPoint (
);
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.
@@ -229,24 +228,28 @@ XenBusDxeDriverBindingSupported (
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
)
{
- EFI_STATUS Status;
- XENIO_PROTOCOL *XenIo;
+ EFI_STATUS Status;
+ XENIO_PROTOCOL *XenIo;
Status = gBS->OpenProtocol (
- ControllerHandle,
- &gXenIoProtocolGuid,
- (VOID **)&XenIo,
- This->DriverBindingHandle,
- ControllerHandle,
- EFI_OPEN_PROTOCOL_BY_DRIVER
- );
+ ControllerHandle,
+ &gXenIoProtocolGuid,
+ (VOID **)&XenIo,
+ This->DriverBindingHandle,
+ ControllerHandle,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
if (EFI_ERROR (Status)) {
return Status;
}
- gBS->CloseProtocol (ControllerHandle, &gXenIoProtocolGuid,
- This->DriverBindingHandle, ControllerHandle);
+ gBS->CloseProtocol (
+ ControllerHandle,
+ &gXenIoProtocolGuid,
+ This->DriverBindingHandle,
+ ControllerHandle
+ );
return Status;
}
@@ -254,14 +257,17 @@ XenBusDxeDriverBindingSupported (
VOID
EFIAPI
NotifyExitBoot (
- IN EFI_EVENT Event,
- IN VOID *Context
+ IN EFI_EVENT Event,
+ IN VOID *Context
)
{
- XENBUS_DEVICE *Dev = Context;
+ XENBUS_DEVICE *Dev = Context;
- gBS->DisconnectController(Dev->ControllerHandle,
- Dev->This->DriverBindingHandle, NULL);
+ gBS->DisconnectController (
+ Dev->ControllerHandle,
+ Dev->This->DriverBindingHandle,
+ NULL
+ );
}
/**
@@ -309,19 +315,19 @@ XenBusDxeDriverBindingStart (
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
)
{
- EFI_STATUS Status;
- XENBUS_DEVICE *Dev;
- XENIO_PROTOCOL *XenIo;
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+ EFI_STATUS Status;
+ XENBUS_DEVICE *Dev;
+ XENIO_PROTOCOL *XenIo;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;
Status = gBS->OpenProtocol (
- ControllerHandle,
- &gXenIoProtocolGuid,
- (VOID**)&XenIo,
- This->DriverBindingHandle,
- ControllerHandle,
- EFI_OPEN_PROTOCOL_BY_DRIVER
- );
+ ControllerHandle,
+ &gXenIoProtocolGuid,
+ (VOID **)&XenIo,
+ This->DriverBindingHandle,
+ ControllerHandle,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
if (EFI_ERROR (Status)) {
return Status;
@@ -330,7 +336,7 @@ XenBusDxeDriverBindingStart (
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiDevicePathProtocolGuid,
- (VOID **) &DevicePath,
+ (VOID **)&DevicePath,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_BY_DRIVER
@@ -340,12 +346,12 @@ XenBusDxeDriverBindingStart (
goto ErrorOpenningProtocol;
}
- Dev = AllocateZeroPool (sizeof (*Dev));
- Dev->Signature = XENBUS_DEVICE_SIGNATURE;
- Dev->This = This;
+ Dev = AllocateZeroPool (sizeof (*Dev));
+ Dev->Signature = XENBUS_DEVICE_SIGNATURE;
+ Dev->This = This;
Dev->ControllerHandle = ControllerHandle;
- Dev->XenIo = XenIo;
- Dev->DevicePath = DevicePath;
+ Dev->XenIo = XenIo;
+ Dev->DevicePath = DevicePath;
InitializeListHead (&Dev->ChildList);
EfiAcquireLock (&mMyDeviceLock);
@@ -357,6 +363,7 @@ XenBusDxeDriverBindingStart (
Status = EFI_ALREADY_STARTED;
goto ErrorAllocated;
}
+
mMyDevice = Dev;
EfiReleaseLock (&mMyDeviceLock);
@@ -374,21 +381,32 @@ XenBusDxeDriverBindingStart (
XenBusEnumerateBus (Dev);
- Status = gBS->CreateEvent (EVT_SIGNAL_EXIT_BOOT_SERVICES, TPL_CALLBACK,
- NotifyExitBoot,
- (VOID*) Dev,
- &Dev->ExitBootEvent);
+ Status = gBS->CreateEvent (
+ EVT_SIGNAL_EXIT_BOOT_SERVICES,
+ TPL_CALLBACK,
+ NotifyExitBoot,
+ (VOID *)Dev,
+ &Dev->ExitBootEvent
+ );
ASSERT_EFI_ERROR (Status);
return EFI_SUCCESS;
ErrorAllocated:
FreePool (Dev);
- gBS->CloseProtocol (ControllerHandle, &gEfiDevicePathProtocolGuid,
- This->DriverBindingHandle, ControllerHandle);
+ gBS->CloseProtocol (
+ ControllerHandle,
+ &gEfiDevicePathProtocolGuid,
+ This->DriverBindingHandle,
+ ControllerHandle
+ );
ErrorOpenningProtocol:
- gBS->CloseProtocol (ControllerHandle, &gXenIoProtocolGuid,
- This->DriverBindingHandle, ControllerHandle);
+ gBS->CloseProtocol (
+ ControllerHandle,
+ &gXenIoProtocolGuid,
+ This->DriverBindingHandle,
+ ControllerHandle
+ );
return Status;
}
@@ -427,44 +445,54 @@ XenBusDxeDriverBindingStop (
IN EFI_HANDLE *ChildHandleBuffer OPTIONAL
)
{
- UINTN Index;
- XENBUS_PROTOCOL *XenBusIo;
- XENBUS_PRIVATE_DATA *ChildData;
- EFI_STATUS Status;
- XENBUS_DEVICE *Dev = mMyDevice;
+ UINTN Index;
+ XENBUS_PROTOCOL *XenBusIo;
+ XENBUS_PRIVATE_DATA *ChildData;
+ EFI_STATUS Status;
+ XENBUS_DEVICE *Dev = mMyDevice;
for (Index = 0; Index < NumberOfChildren; Index++) {
Status = gBS->OpenProtocol (
- ChildHandleBuffer[Index],
- &gXenBusProtocolGuid,
- (VOID **) &XenBusIo,
- This->DriverBindingHandle,
- ControllerHandle,
- EFI_OPEN_PROTOCOL_GET_PROTOCOL);
+ ChildHandleBuffer[Index],
+ &gXenBusProtocolGuid,
+ (VOID **)&XenBusIo,
+ This->DriverBindingHandle,
+ ControllerHandle,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "XenBusDxe: get children protocol failed: %r\n", Status));
continue;
}
+
ChildData = XENBUS_PRIVATE_DATA_FROM_THIS (XenBusIo);
- Status = gBS->CloseProtocol (Dev->ControllerHandle, &gXenIoProtocolGuid,
- Dev->This->DriverBindingHandle, ChildData->Handle);
+ Status = gBS->CloseProtocol (
+ Dev->ControllerHandle,
+ &gXenIoProtocolGuid,
+ Dev->This->DriverBindingHandle,
+ ChildData->Handle
+ );
ASSERT_EFI_ERROR (Status);
Status = gBS->UninstallMultipleProtocolInterfaces (
- ChildData->Handle,
- &gEfiDevicePathProtocolGuid, ChildData->DevicePath,
- &gXenBusProtocolGuid, &ChildData->XenBusIo,
- NULL);
+ ChildData->Handle,
+ &gEfiDevicePathProtocolGuid,
+ ChildData->DevicePath,
+ &gXenBusProtocolGuid,
+ &ChildData->XenBusIo,
+ NULL
+ );
ASSERT_EFI_ERROR (Status);
- FreePool ((VOID*)ChildData->XenBusIo.Type);
- FreePool ((VOID*)ChildData->XenBusIo.Node);
- FreePool ((VOID*)ChildData->XenBusIo.Backend);
+ FreePool ((VOID *)ChildData->XenBusIo.Type);
+ FreePool ((VOID *)ChildData->XenBusIo.Node);
+ FreePool ((VOID *)ChildData->XenBusIo.Backend);
FreePool (ChildData->DevicePath);
RemoveEntryList (&ChildData->Link);
FreePool (ChildData);
}
+
if (NumberOfChildren > 0) {
return EFI_SUCCESS;
}
@@ -473,10 +501,18 @@ XenBusDxeDriverBindingStop (
XenStoreDeinit (Dev);
XenGrantTableDeinit (Dev);
- gBS->CloseProtocol (ControllerHandle, &gEfiDevicePathProtocolGuid,
- This->DriverBindingHandle, ControllerHandle);
- gBS->CloseProtocol (ControllerHandle, &gXenIoProtocolGuid,
- This->DriverBindingHandle, ControllerHandle);
+ gBS->CloseProtocol (
+ ControllerHandle,
+ &gEfiDevicePathProtocolGuid,
+ This->DriverBindingHandle,
+ ControllerHandle
+ );
+ gBS->CloseProtocol (
+ ControllerHandle,
+ &gXenIoProtocolGuid,
+ This->DriverBindingHandle,
+ ControllerHandle
+ );
mMyDevice = NULL;
FreePool (Dev);
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-07 22:31:58 +0000