diff options
Diffstat (limited to 'OvmfPkg/VirtioNetDxe/DriverBinding.c')
| -rw-r--r-- | OvmfPkg/VirtioNetDxe/DriverBinding.c | 653 |
1 files changed, 0 insertions, 653 deletions
diff --git a/OvmfPkg/VirtioNetDxe/DriverBinding.c b/OvmfPkg/VirtioNetDxe/DriverBinding.c deleted file mode 100644 index 0ad39cf972..0000000000 --- a/OvmfPkg/VirtioNetDxe/DriverBinding.c +++ /dev/null @@ -1,653 +0,0 @@ -/** @file
-
- Driver Binding code and its private helpers for the virtio-net driver.
-
- Copyright (C) 2013, Red Hat, Inc.
- Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
-
- 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 <Library/BaseMemoryLib.h>
-#include <Library/DevicePathLib.h>
-#include <Library/MemoryAllocationLib.h>
-#include <Library/UefiBootServicesTableLib.h>
-
-#include "VirtioNet.h"
-
-#define RECEIVE_FILTERS_NO_MCAST ((UINT32) ( \
- EFI_SIMPLE_NETWORK_RECEIVE_UNICAST | \
- EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST | \
- EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS \
- ))
-
-/*
- Temporarily enable then reset the virtio-net device in order to retrieve
- configuration values needed by Simple Network Protocol and Simple Network
- Mode fields.
-
- Only VirtioNetSnpPopulate() may call this function.
-
- If the function fails for any reason, the virtio-net device is moved to
- VSTAT_FAILED instead of being reset. This serves only informative purposes
- for the host side.
-
- param[in,out] Dev The VNET_DEV structure being created for
- the virtio-net device.
- param[out] MacAddress MAC address configured by the host.
- param[out] MediaPresentSupported Link status is made available by the host.
- param[out] MediaPresent If link status is made available by the
- host, the current link status is stored in
- *MediaPresent. Otherwise MediaPresent is
- unused.
-
- @retval EFI_UNSUPPORTED The host doesn't supply a MAC address.
- @return Status codes from VirtIo protocol members.
- @retval EFI_SUCCESS Configuration values retrieved.
-*/
-STATIC
-EFI_STATUS
-EFIAPI
-VirtioNetGetFeatures (
- IN OUT VNET_DEV *Dev,
- OUT EFI_MAC_ADDRESS *MacAddress,
- OUT BOOLEAN *MediaPresentSupported,
- OUT BOOLEAN *MediaPresent
- )
-{
- EFI_STATUS Status;
- UINT8 NextDevStat;
- UINT32 Features;
- UINTN MacIdx;
- UINT16 LinkStatus;
-
- //
- // Interrogate the device for features (virtio-0.9.5, 2.2.1 Device
- // Initialization Sequence), but don't complete setting it up.
- //
- NextDevStat = 0; // step 1 -- reset device
- Status = Dev->VirtIo->SetDeviceStatus (Dev->VirtIo, NextDevStat);
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- NextDevStat |= VSTAT_ACK; // step 2 -- acknowledge device presence
- Status = Dev->VirtIo->SetDeviceStatus (Dev->VirtIo, NextDevStat);
- if (EFI_ERROR (Status)) {
- goto YieldDevice;
- }
-
- NextDevStat |= VSTAT_DRIVER; // step 3 -- we know how to drive it
- Status = Dev->VirtIo->SetDeviceStatus (Dev->VirtIo, NextDevStat);
- if (EFI_ERROR (Status)) {
- goto YieldDevice;
- }
-
- //
- // step 4a -- retrieve and validate features
- //
- Status = Dev->VirtIo->GetDeviceFeatures (Dev->VirtIo, &Features);
- if (EFI_ERROR (Status)) {
- goto YieldDevice;
- }
-
- //
- // get MAC address byte-wise
- //
- if ((Features & VIRTIO_NET_F_MAC) == 0) {
- Status = EFI_UNSUPPORTED;
- goto YieldDevice;
- }
- for (MacIdx = 0; MacIdx < SIZE_OF_VNET (Mac); ++MacIdx) {
- Status = Dev->VirtIo->ReadDevice (Dev->VirtIo,
- OFFSET_OF_VNET (Mac) + MacIdx, // Offset
- 1, // FieldSize
- 1, // BufferSize
- &MacAddress->Addr[MacIdx] // Buffer
- );
- if (EFI_ERROR (Status)) {
- goto YieldDevice;
- }
- }
-
- //
- // check if link status is reported, and if so, what the link status is
- //
- if ((Features & VIRTIO_NET_F_STATUS) == 0) {
- *MediaPresentSupported = FALSE;
- }
- else {
- *MediaPresentSupported = TRUE;
- Status = VIRTIO_CFG_READ (Dev, LinkStatus, &LinkStatus);
- if (EFI_ERROR (Status)) {
- goto YieldDevice;
- }
- *MediaPresent = (BOOLEAN) ((LinkStatus & VIRTIO_NET_S_LINK_UP) != 0);
- }
-
-YieldDevice:
- Dev->VirtIo->SetDeviceStatus (Dev->VirtIo,
- EFI_ERROR (Status) ? VSTAT_FAILED : 0);
-
- return Status;
-}
-
-
-/**
- Set up the Simple Network Protocol fields, the Simple Network Mode fields,
- and the Exit Boot Services Event of the virtio-net driver instance.
-
- This function may only be called by VirtioNetDriverBindingStart().
-
- @param[in,out] Dev The VNET_DEV driver instance being created for the
- virtio-net device.
-
- @return Status codes from the CreateEvent() boot service or the
- VirtioNetGetFeatures() function.
- @retval EFI_SUCCESS Configuration successful.
-*/
-STATIC
-EFI_STATUS
-EFIAPI
-VirtioNetSnpPopulate (
- IN OUT VNET_DEV *Dev
- )
-{
- EFI_STATUS Status;
-
- //
- // We set up a function here that is asynchronously callable by an
- // external application to check if there are any packets available for
- // reception. The least urgent task priority level we can specify for such a
- // "software interrupt" is TPL_CALLBACK.
- //
- // TPL_CALLBACK is also the maximum TPL an SNP implementation is allowed to
- // run at (see 6.1 Event, Timer, and Task Priority Services in the UEFI
- // Specification 2.3.1+errC).
- //
- // Since we raise our TPL to TPL_CALLBACK in every single function that
- // accesses the device, and the external application also queues its interest
- // for received packets at the same TPL_CALLBACK, in effect the
- // VirtioNetIsPacketAvailable() function will never interrupt any
- // device-accessing driver function, it will be scheduled in isolation.
- //
- // TPL_CALLBACK (which basically this entire driver runs at) is allowed
- // for "[l]ong term operations (such as file system operations and disk
- // I/O)". Because none of our functions block, we'd satisfy an even stronger
- // requirement.
- //
- Status = gBS->CreateEvent (EVT_NOTIFY_WAIT, TPL_CALLBACK,
- &VirtioNetIsPacketAvailable, Dev, &Dev->Snp.WaitForPacket);
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- Dev->Snp.Revision = EFI_SIMPLE_NETWORK_PROTOCOL_REVISION;
- Dev->Snp.Start = &VirtioNetStart;
- Dev->Snp.Stop = &VirtioNetStop;
- Dev->Snp.Initialize = &VirtioNetInitialize;
- Dev->Snp.Reset = &VirtioNetReset;
- Dev->Snp.Shutdown = &VirtioNetShutdown;
- Dev->Snp.ReceiveFilters = &VirtioNetReceiveFilters;
- Dev->Snp.StationAddress = &VirtioNetStationAddress;
- Dev->Snp.Statistics = &VirtioNetStatistics;
- Dev->Snp.MCastIpToMac = &VirtioNetMcastIpToMac;
- Dev->Snp.NvData = &VirtioNetNvData;
- Dev->Snp.GetStatus = &VirtioNetGetStatus;
- Dev->Snp.Transmit = &VirtioNetTransmit;
- Dev->Snp.Receive = &VirtioNetReceive;
- Dev->Snp.Mode = &Dev->Snm;
-
- Dev->Snm.State = EfiSimpleNetworkStopped;
- Dev->Snm.HwAddressSize = SIZE_OF_VNET (Mac);
- Dev->Snm.MediaHeaderSize = SIZE_OF_VNET (Mac) + // dst MAC
- SIZE_OF_VNET (Mac) + // src MAC
- 2; // Ethertype
- Dev->Snm.MaxPacketSize = 1500;
- Dev->Snm.NvRamSize = 0;
- Dev->Snm.NvRamAccessSize = 0;
- Dev->Snm.ReceiveFilterMask = RECEIVE_FILTERS_NO_MCAST;
- Dev->Snm.ReceiveFilterSetting = RECEIVE_FILTERS_NO_MCAST;
- Dev->Snm.MaxMCastFilterCount = 0;
- Dev->Snm.MCastFilterCount = 0;
- Dev->Snm.IfType = 1; // ethernet
- Dev->Snm.MacAddressChangeable = FALSE;
- Dev->Snm.MultipleTxSupported = TRUE;
-
- ASSERT (SIZE_OF_VNET (Mac) <= sizeof (EFI_MAC_ADDRESS));
-
- Status = VirtioNetGetFeatures (Dev, &Dev->Snm.CurrentAddress,
- &Dev->Snm.MediaPresentSupported, &Dev->Snm.MediaPresent);
- if (EFI_ERROR (Status)) {
- goto CloseWaitForPacket;
- }
- CopyMem (&Dev->Snm.PermanentAddress, &Dev->Snm.CurrentAddress,
- SIZE_OF_VNET (Mac));
- SetMem (&Dev->Snm.BroadcastAddress, SIZE_OF_VNET (Mac), 0xFF);
-
- //
- // VirtioNetExitBoot() is queued by ExitBootServices(); its purpose is to
- // cancel any pending virtio requests. The TPL_CALLBACK reasoning is
- // identical to the one above. There's one difference: this kind of
- // event is "globally visible", which means it can be signalled as soon as
- // we create it. We haven't raised our TPL here, hence VirtioNetExitBoot()
- // could be entered immediately. VirtioNetExitBoot() checks Dev->Snm.State,
- // so we're safe.
- //
- Status = gBS->CreateEvent (EVT_SIGNAL_EXIT_BOOT_SERVICES, TPL_CALLBACK,
- &VirtioNetExitBoot, Dev, &Dev->ExitBoot);
- if (EFI_ERROR (Status)) {
- goto CloseWaitForPacket;
- }
-
- return EFI_SUCCESS;
-
-CloseWaitForPacket:
- gBS->CloseEvent (Dev->Snp.WaitForPacket);
- return Status;
-}
-
-
-/**
- Release any resources allocated by VirtioNetSnpPopulate().
-
- This function may only be called by VirtioNetDriverBindingStart(), when
- rolling back a partial, failed driver instance creation, and by
- VirtioNetDriverBindingStop(), when disconnecting a virtio-net device from the
- driver.
-
- @param[in,out] Dev The VNET_DEV driver instance being destroyed.
-*/
-STATIC
-VOID
-EFIAPI
-VirtioNetSnpEvacuate (
- IN OUT VNET_DEV *Dev
- )
-{
- //
- // This function runs either at TPL_CALLBACK already (from
- // VirtioNetDriverBindingStop()), or it is part of a teardown following
- // a partial, failed construction in VirtioNetDriverBindingStart(), when
- // WaitForPacket was never accessible to the world.
- //
- gBS->CloseEvent (Dev->ExitBoot);
- gBS->CloseEvent (Dev->Snp.WaitForPacket);
-}
-
-
-/**
- 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.
-**/
-
-STATIC
-EFI_STATUS
-EFIAPI
-VirtioNetDriverBindingSupported (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE DeviceHandle,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
- )
-{
- EFI_STATUS Status;
- VIRTIO_DEVICE_PROTOCOL *VirtIo;
-
- //
- // Attempt to open the device with the VirtIo set of interfaces. On success,
- // the protocol is "instantiated" for the VirtIo device. Covers duplicate open
- // attempts (EFI_ALREADY_STARTED).
- //
- Status = gBS->OpenProtocol (
- DeviceHandle, // candidate device
- &gVirtioDeviceProtocolGuid, // for generic VirtIo access
- (VOID **)&VirtIo, // handle to instantiate
- This->DriverBindingHandle, // requestor driver identity
- DeviceHandle, // ControllerHandle, according to
- // the UEFI Driver Model
- EFI_OPEN_PROTOCOL_BY_DRIVER // get exclusive VirtIo access to
- // the device; to be released
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- if (VirtIo->SubSystemDeviceId != VIRTIO_SUBSYSTEM_NETWORK_CARD) {
- Status = EFI_UNSUPPORTED;
- }
-
- //
- // We needed VirtIo access only transitorily, to see whether we support the
- // device or not.
- //
- gBS->CloseProtocol (DeviceHandle, &gVirtioDeviceProtocolGuid,
- This->DriverBindingHandle, DeviceHandle);
- return Status;
-}
-
-
-/**
- Starts a device controller or a bus 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.
-
-**/
-
-STATIC
-EFI_STATUS
-EFIAPI
-VirtioNetDriverBindingStart (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE DeviceHandle,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
- )
-{
- EFI_STATUS Status;
- VNET_DEV *Dev;
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;
- MAC_ADDR_DEVICE_PATH MacNode;
- VOID *ChildVirtIo;
-
- //
- // allocate space for the driver instance
- //
- Dev = (VNET_DEV *) AllocateZeroPool (sizeof *Dev);
- if (Dev == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
- Dev->Signature = VNET_SIG;
-
- Status = gBS->OpenProtocol (DeviceHandle, &gVirtioDeviceProtocolGuid,
- (VOID **)&Dev->VirtIo, This->DriverBindingHandle,
- DeviceHandle, EFI_OPEN_PROTOCOL_BY_DRIVER);
- if (EFI_ERROR (Status)) {
- goto FreeVirtioNet;
- }
-
- //
- // now we can run a basic one-shot virtio-net initialization required to
- // retrieve the MAC address
- //
- Status = VirtioNetSnpPopulate (Dev);
- if (EFI_ERROR (Status)) {
- goto CloseVirtIo;
- }
-
- //
- // get the device path of the virtio-net device -- one-shot open
- //
- Status = gBS->OpenProtocol (DeviceHandle, &gEfiDevicePathProtocolGuid,
- (VOID **)&DevicePath, This->DriverBindingHandle,
- DeviceHandle, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
- if (EFI_ERROR (Status)) {
- goto Evacuate;
- }
-
- //
- // create another device path that has the MAC address appended
- //
- MacNode.Header.Type = MESSAGING_DEVICE_PATH;
- MacNode.Header.SubType = MSG_MAC_ADDR_DP;
- SetDevicePathNodeLength (&MacNode, sizeof MacNode);
- CopyMem (&MacNode.MacAddress, &Dev->Snm.CurrentAddress,
- sizeof (EFI_MAC_ADDRESS));
- MacNode.IfType = Dev->Snm.IfType;
-
- Dev->MacDevicePath = AppendDevicePathNode (DevicePath, &MacNode.Header);
- if (Dev->MacDevicePath == NULL) {
- Status = EFI_OUT_OF_RESOURCES;
- goto Evacuate;
- }
-
- //
- // create a child handle with the Simple Network Protocol and the new
- // device path installed on it
- //
- Status = gBS->InstallMultipleProtocolInterfaces (&Dev->MacHandle,
- &gEfiSimpleNetworkProtocolGuid, &Dev->Snp,
- &gEfiDevicePathProtocolGuid, Dev->MacDevicePath,
- NULL);
- if (EFI_ERROR (Status)) {
- goto FreeMacDevicePath;
- }
-
- //
- // make a note that we keep this device open with VirtIo for the sake of this
- // child
- //
- Status = gBS->OpenProtocol (DeviceHandle, &gVirtioDeviceProtocolGuid,
- &ChildVirtIo, This->DriverBindingHandle,
- Dev->MacHandle, EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER);
- if (EFI_ERROR (Status)) {
- goto UninstallMultiple;
- }
-
- return EFI_SUCCESS;
-
-UninstallMultiple:
- gBS->UninstallMultipleProtocolInterfaces (Dev->MacHandle,
- &gEfiDevicePathProtocolGuid, Dev->MacDevicePath,
- &gEfiSimpleNetworkProtocolGuid, &Dev->Snp,
- NULL);
-
-FreeMacDevicePath:
- FreePool (Dev->MacDevicePath);
-
-Evacuate:
- VirtioNetSnpEvacuate (Dev);
-
-CloseVirtIo:
- gBS->CloseProtocol (DeviceHandle, &gVirtioDeviceProtocolGuid,
- This->DriverBindingHandle, DeviceHandle);
-
-FreeVirtioNet:
- FreePool (Dev);
-
- return Status;
-}
-
-
-/**
- Stops a device controller or a bus 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.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-VirtioNetDriverBindingStop (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE DeviceHandle,
- IN UINTN NumberOfChildren,
- IN EFI_HANDLE *ChildHandleBuffer
- )
-{
- if (NumberOfChildren > 0) {
- //
- // free all resources for whose access we need the child handle, because
- // the child handle is going away
- //
- EFI_STATUS Status;
- EFI_SIMPLE_NETWORK_PROTOCOL *Snp;
- VNET_DEV *Dev;
- EFI_TPL OldTpl;
-
- ASSERT (NumberOfChildren == 1);
-
- Status = gBS->OpenProtocol (ChildHandleBuffer[0],
- &gEfiSimpleNetworkProtocolGuid, (VOID **)&Snp,
- This->DriverBindingHandle, DeviceHandle,
- EFI_OPEN_PROTOCOL_GET_PROTOCOL);
- ASSERT_EFI_ERROR (Status);
- Dev = VIRTIO_NET_FROM_SNP (Snp);
-
- //
- // prevent any interference with WaitForPacket
- //
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- ASSERT (Dev->MacHandle == ChildHandleBuffer[0]);
- if (Dev->Snm.State != EfiSimpleNetworkStopped) {
- //
- // device in use, cannot stop driver instance
- //
- Status = EFI_DEVICE_ERROR;
- }
- else {
- gBS->CloseProtocol (DeviceHandle, &gVirtioDeviceProtocolGuid,
- This->DriverBindingHandle, Dev->MacHandle);
- gBS->UninstallMultipleProtocolInterfaces (Dev->MacHandle,
- &gEfiDevicePathProtocolGuid, Dev->MacDevicePath,
- &gEfiSimpleNetworkProtocolGuid, &Dev->Snp,
- NULL);
- FreePool (Dev->MacDevicePath);
- VirtioNetSnpEvacuate (Dev);
- FreePool (Dev);
- }
-
- gBS->RestoreTPL (OldTpl);
- return Status;
- }
-
- //
- // release remaining resources, tied directly to the parent handle
- //
- gBS->CloseProtocol (DeviceHandle, &gVirtioDeviceProtocolGuid,
- This->DriverBindingHandle, DeviceHandle);
-
- return EFI_SUCCESS;
-}
-
-
-EFI_DRIVER_BINDING_PROTOCOL gVirtioNetDriverBinding = {
- &VirtioNetDriverBindingSupported,
- &VirtioNetDriverBindingStart,
- &VirtioNetDriverBindingStop,
- 0x10,
- NULL,
- NULL
-};
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