summaryrefslogtreecommitdiffstats
path: root/src/VBox/Devices/EFI/Firmware/VBoxPkg/E1kNetDxe/DriverBinding.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/VBoxPkg/E1kNetDxe/DriverBinding.c')
-rw-r--r--src/VBox/Devices/EFI/Firmware/VBoxPkg/E1kNetDxe/DriverBinding.c666
1 files changed, 666 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/VBoxPkg/E1kNetDxe/DriverBinding.c b/src/VBox/Devices/EFI/Firmware/VBoxPkg/E1kNetDxe/DriverBinding.c
new file mode 100644
index 00000000..7ab92e6b
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/VBoxPkg/E1kNetDxe/DriverBinding.c
@@ -0,0 +1,666 @@
+/** @file
+
+ Driver Binding code and its private helpers for the virtio-net driver.
+
+ Copyright (c) 2021, Oracle and/or its affiliates.
+ Copyright (C) 2013, Red Hat, Inc.
+ Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <IndustryStandard/Pci.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DevicePathLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+
+#include "E1kNet.h"
+
+#define RECEIVE_FILTERS_NO_MCAST ((UINT32) ( \
+ EFI_SIMPLE_NETWORK_RECEIVE_UNICAST | \
+ EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST | \
+ EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS \
+ ))
+
+STATIC
+EFI_STATUS
+E1kNetEepromRead (
+ IN E1K_NET_DEV *Dev,
+ IN UINT8 Offset,
+ OUT UINT16 *Data
+ )
+{
+ EFI_STATUS Status;
+ UINT32 RegEerd = 0;
+
+ Status = E1kNetRegWrite32(Dev, E1K_REG_EERD, ((UINT32)Offset << 8) | E1K_REG_EERD_START);
+ if (EFI_ERROR (Status))
+ return Status;
+
+ // Wait for the read to complete
+ while ( !EFI_ERROR (Status)
+ && !(RegEerd & E1K_REG_EERD_DONE)) {
+ gBS->Stall(1);
+ Status = E1kNetRegRead32(Dev, E1K_REG_EERD, &RegEerd);
+ }
+
+ if (!EFI_ERROR(Status))
+ *Data = E1K_REG_EERD_DATA_GET(RegEerd);
+
+ return Status;
+}
+
+STATIC
+EFI_STATUS
+E1kNetMacAddrRead (
+ IN E1K_NET_DEV *Dev
+ )
+{
+ EFI_STATUS Status;
+ UINT8 i;
+
+ for (i = 0; i < 3; i++)
+ {
+ UINT16 MacAddr;
+ Status = E1kNetEepromRead (Dev, i, &MacAddr);
+ if (EFI_ERROR (Status))
+ return Status;
+
+ Dev->Snm.CurrentAddress.Addr[i * 2] = MacAddr & 0xff;
+ Dev->Snm.CurrentAddress.Addr[i * 2 + 1] = (MacAddr >> 8) & 0xff;
+ }
+
+ 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 E1kNetDriverBindingStart().
+
+ @param[in,out] Dev The E1K_NET_DEV driver instance being created for the
+ e1000 device.
+
+ @return Status codes from the CreateEvent().
+ @retval EFI_SUCCESS Configuration successful.
+*/
+STATIC
+EFI_STATUS
+EFIAPI
+E1kNetSnpPopulate (
+ IN OUT E1K_NET_DEV *Dev
+ )
+{
+ UINT32 RegSts;
+ 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
+ // E1kNetIsPacketAvailable() 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,
+ &E1kNetIsPacketAvailable, Dev, &Dev->Snp.WaitForPacket);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Dev->Snp.Revision = EFI_SIMPLE_NETWORK_PROTOCOL_REVISION;
+ Dev->Snp.Start = &E1kNetStart;
+ Dev->Snp.Stop = &E1kNetStop;
+ Dev->Snp.Initialize = &E1kNetInitialize;
+ Dev->Snp.Reset = &E1kNetReset;
+ Dev->Snp.Shutdown = &E1kNetShutdown;
+ Dev->Snp.ReceiveFilters = &E1kNetReceiveFilters;
+ Dev->Snp.StationAddress = &E1kNetStationAddress;
+ Dev->Snp.Statistics = &E1kNetStatistics;
+ Dev->Snp.MCastIpToMac = &E1kNetMcastIpToMac;
+ Dev->Snp.NvData = &E1kNetNvData;
+ Dev->Snp.GetStatus = &E1kNetGetStatus;
+ Dev->Snp.Transmit = &E1kNetTransmit;
+ Dev->Snp.Receive = &E1kNetReceive;
+ Dev->Snp.Mode = &Dev->Snm;
+
+ Dev->Snm.State = EfiSimpleNetworkStopped;
+ Dev->Snm.HwAddressSize = sizeof (E1K_NET_MAC);
+ Dev->Snm.MediaHeaderSize = sizeof (E1K_NET_MAC) + // dst MAC
+ sizeof (E1K_NET_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 (sizeof (E1K_NET_MAC) <= sizeof (EFI_MAC_ADDRESS));
+
+ Dev->Snm.MediaPresentSupported = TRUE;
+ Status = E1kNetRegRead32(Dev, E1K_REG_STATUS, &RegSts);
+ if (EFI_ERROR (Status)) {
+ goto CloseWaitForPacket;
+ }
+
+ Dev->Snm.MediaPresent = (BOOLEAN)((RegSts & E1K_REG_STATUS_LU) != 0);
+
+ Status = E1kNetMacAddrRead(Dev);
+ CopyMem (&Dev->Snm.PermanentAddress, &Dev->Snm.CurrentAddress,
+ sizeof (E1K_NET_MAC));
+ SetMem (&Dev->Snm.BroadcastAddress, sizeof (E1K_NET_MAC), 0xFF);
+
+ //
+ // E1kNetExitBoot() is queued by ExitBootServices(); its purpose is to
+ // cancel any pending 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 E1kNetExitBoot()
+ // could be entered immediately. E1kNetExitBoot() checks Dev->Snm.State,
+ // so we're safe.
+ //
+ Status = gBS->CreateEvent (EVT_SIGNAL_EXIT_BOOT_SERVICES, TPL_CALLBACK,
+ &E1kNetExitBoot, 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 E1kNetSnpPopulate().
+
+ This function may only be called by E1kNetDriverBindingStart(), when
+ rolling back a partial, failed driver instance creation, and by
+ E1kNetDriverBindingStop(), when disconnecting a virtio-net device from the
+ driver.
+
+ @param[in,out] Dev The E1K_NET_DEV driver instance being destroyed.
+*/
+STATIC
+VOID
+EFIAPI
+E1kNetSnpEvacuate (
+ IN OUT E1K_NET_DEV *Dev
+ )
+{
+ //
+ // This function runs either at TPL_CALLBACK already (from
+ // E1kNetDriverBindingStop()), or it is part of a teardown following
+ // a partial, failed construction in E1kNetDriverBindingStart(), 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
+E1kNetDriverBindingSupported (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE ControllerHandle,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
+ )
+{
+ EFI_STATUS Status;
+ EFI_PCI_IO_PROTOCOL *PciIo;
+ PCI_TYPE00 Pci;
+
+ Status = gBS->OpenProtocol (
+ ControllerHandle,
+ &gEfiPciIoProtocolGuid,
+ (VOID **)&PciIo,
+ This->DriverBindingHandle,
+ ControllerHandle,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Status = PciIo->Pci.Read (
+ PciIo,
+ EfiPciIoWidthUint32,
+ 0,
+ sizeof (Pci) / sizeof (UINT32),
+ &Pci
+ );
+ if (EFI_ERROR (Status)) {
+ goto Done;
+ }
+
+ if (Pci.Hdr.VendorId == INTEL_PCI_VENDOR_ID &&
+ (Pci.Hdr.DeviceId == INTEL_82540EM_PCI_DEVICE_ID ||
+ Pci.Hdr.DeviceId == INTEL_82543GC_PCI_DEVICE_ID ||
+ Pci.Hdr.DeviceId == INTEL_82545EM_PCI_DEVICE_ID)) {
+ Status = EFI_SUCCESS;
+ } else {
+ Status = EFI_UNSUPPORTED;
+ }
+
+Done:
+ gBS->CloseProtocol (
+ ControllerHandle,
+ &gEfiPciIoProtocolGuid,
+ This->DriverBindingHandle,
+ ControllerHandle
+ );
+ 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 failed to start the device.
+
+**/
+STATIC
+EFI_STATUS
+EFIAPI
+E1kNetDriverBindingStart (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE ControllerHandle,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
+ )
+{
+ EFI_STATUS Status;
+ E1K_NET_DEV *Dev;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+ MAC_ADDR_DEVICE_PATH MacNode;
+
+ DEBUG((DEBUG_INFO, "E1kNetControllerStart:\n"));
+
+ Dev = AllocateZeroPool (sizeof (*Dev));
+ if (Dev == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Dev->Signature = E1K_NET_DEV_SIGNATURE;
+
+ Status = gBS->OpenProtocol (
+ ControllerHandle,
+ &gEfiPciIoProtocolGuid,
+ (VOID **)&Dev->PciIo,
+ This->DriverBindingHandle,
+ ControllerHandle,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ if (EFI_ERROR (Status)) {
+ goto FreePool;
+ }
+
+ Status = Dev->PciIo->Attributes (
+ Dev->PciIo,
+ EfiPciIoAttributeOperationGet,
+ 0,
+ &Dev->OriginalPciAttributes
+ );
+ if (EFI_ERROR (Status)) {
+ goto CloseProtocol;
+ }
+
+ //
+ // Enable I/O Space & Bus-Mastering
+ //
+ Status = Dev->PciIo->Attributes (
+ Dev->PciIo,
+ EfiPciIoAttributeOperationEnable,
+ (EFI_PCI_IO_ATTRIBUTE_IO |
+ EFI_PCI_IO_ATTRIBUTE_BUS_MASTER),
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ goto CloseProtocol;
+ }
+
+ //
+ // Signal device supports 64-bit DMA addresses
+ //
+ Status = Dev->PciIo->Attributes (
+ Dev->PciIo,
+ EfiPciIoAttributeOperationEnable,
+ EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ //
+ // Warn user that device will only be using 32-bit DMA addresses.
+ //
+ // Note that this does not prevent the device/driver from working
+ // and therefore we only warn and continue as usual.
+ //
+ DEBUG ((
+ DEBUG_WARN,
+ "%a: failed to enable 64-bit DMA addresses\n",
+ __FUNCTION__
+ ));
+ }
+
+ DEBUG((DEBUG_INFO, "E1kNetControllerStart: Resetting NIC\n"));
+ Status = E1kNetDevReset (Dev);
+ if (EFI_ERROR (Status)) {
+ goto RestoreAttributes;
+ }
+
+ //
+ // now we can run a basic one-shot e1000 initialization required to
+ // retrieve the MAC address
+ //
+ DEBUG((DEBUG_INFO, "E1kNetControllerStart: Populating SNP interface\n"));
+ Status = E1kNetSnpPopulate (Dev);
+ if (EFI_ERROR (Status)) {
+ goto UninitDev;
+ }
+
+ //
+ // get the device path of the e1000 device -- one-shot open
+ //
+ Status = gBS->OpenProtocol (ControllerHandle, &gEfiDevicePathProtocolGuid,
+ (VOID **)&DevicePath, This->DriverBindingHandle,
+ ControllerHandle, 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;
+ }
+
+ DEBUG((DEBUG_INFO, "E1kNetControllerStart: returns EFI_SUCCESS\n"));
+ return EFI_SUCCESS;
+
+FreeMacDevicePath:
+ FreePool (Dev->MacDevicePath);
+
+Evacuate:
+ E1kNetSnpEvacuate (Dev);
+
+UninitDev:
+ E1kNetDevReset (Dev);
+
+RestoreAttributes:
+ Dev->PciIo->Attributes (
+ Dev->PciIo,
+ EfiPciIoAttributeOperationSet,
+ Dev->OriginalPciAttributes,
+ NULL
+ );
+
+CloseProtocol:
+ gBS->CloseProtocol (
+ ControllerHandle,
+ &gEfiPciIoProtocolGuid,
+ This->DriverBindingHandle,
+ ControllerHandle
+ );
+
+FreePool:
+ FreePool (Dev);
+
+ DEBUG((DEBUG_INFO, "E1kNetControllerStart: returns %u\n", Status));
+ 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
+E1kNetDriverBindingStop (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE ControllerHandle,
+ 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;
+ E1K_NET_DEV *Dev;
+ EFI_TPL OldTpl;
+
+ ASSERT (NumberOfChildren == 1);
+
+ Status = gBS->OpenProtocol (ChildHandleBuffer[0],
+ &gEfiSimpleNetworkProtocolGuid, (VOID **)&Snp,
+ This->DriverBindingHandle, ControllerHandle,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL);
+ ASSERT_EFI_ERROR (Status);
+ Dev = E1K_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->UninstallMultipleProtocolInterfaces (Dev->MacHandle,
+ &gEfiDevicePathProtocolGuid, Dev->MacDevicePath,
+ &gEfiSimpleNetworkProtocolGuid, &Dev->Snp,
+ NULL);
+ FreePool (Dev->MacDevicePath);
+ E1kNetSnpEvacuate (Dev);
+
+ Dev->PciIo->Attributes (
+ Dev->PciIo,
+ EfiPciIoAttributeOperationSet,
+ Dev->OriginalPciAttributes,
+ NULL
+ );
+
+ gBS->CloseProtocol (
+ ControllerHandle,
+ &gEfiPciIoProtocolGuid,
+ This->DriverBindingHandle,
+ ControllerHandle
+ );
+
+ FreePool (Dev);
+ }
+
+ gBS->RestoreTPL (OldTpl);
+ return Status;
+ }
+
+ return EFI_SUCCESS;
+}
+
+
+EFI_DRIVER_BINDING_PROTOCOL gE1kNetDriverBinding = {
+ &E1kNetDriverBindingSupported,
+ &E1kNetDriverBindingStart,
+ &E1kNetDriverBindingStop,
+ 0x10,
+ NULL,
+ NULL
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-17 07:51:03 +0000