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| author | Laszlo Ersek <lersek@redhat.com> | 2013-06-14 07:40:11 +0000 |
|---|---|---|
| committer | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-06-14 07:40:11 +0000 |
| commit | 80682e9b2fe076aaa6eaf871a69da663ae57dcba (patch) | |
| tree | d9073ac613571a550ed2526be237eb24e3cedf33 /OvmfPkg/VirtioNetDxe/SnpShutdown.c | |
| parent | 12384f9b2657946052fab05cbe86d147124c71bf (diff) | |
| download | edk2-80682e9b2fe076aaa6eaf871a69da663ae57dcba.tar.gz edk2-80682e9b2fe076aaa6eaf871a69da663ae57dcba.tar.bz2 edk2-80682e9b2fe076aaa6eaf871a69da663ae57dcba.zip | |
OvmfPkg: VirtioNetDxe: SNP.Shutdown
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14411 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'OvmfPkg/VirtioNetDxe/SnpShutdown.c')
| -rw-r--r-- | OvmfPkg/VirtioNetDxe/SnpShutdown.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/OvmfPkg/VirtioNetDxe/SnpShutdown.c b/OvmfPkg/VirtioNetDxe/SnpShutdown.c new file mode 100644 index 0000000000..42aeca1676 --- /dev/null +++ b/OvmfPkg/VirtioNetDxe/SnpShutdown.c @@ -0,0 +1,78 @@ +/** @file
+
+ Implementation of the SNP.Shutdown() function and its private helpers if any.
+
+ Copyright (C) 2013, Red Hat, Inc.
+ Copyright (c) 2006 - 2010, 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/UefiBootServicesTableLib.h>
+
+#include "VirtioNet.h"
+
+/**
+ Resets a network adapter and leaves it in a state that is safe for another
+ driver to initialize.
+
+ @param This Protocol instance pointer.
+
+ @retval EFI_SUCCESS The network interface was shutdown.
+ @retval EFI_NOT_STARTED The network interface has not been started.
+ @retval EFI_INVALID_PARAMETER One or more of the parameters has an
+ unsupported value.
+ @retval EFI_DEVICE_ERROR The command could not be sent to the network
+ interface.
+ @retval EFI_UNSUPPORTED This function is not supported by the network
+ interface.
+
+**/
+
+EFI_STATUS
+EFIAPI
+VirtioNetShutdown (
+ IN EFI_SIMPLE_NETWORK_PROTOCOL *This
+ )
+{
+ VNET_DEV *Dev;
+ EFI_TPL OldTpl;
+ EFI_STATUS Status;
+
+ if (This == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Dev = VIRTIO_NET_FROM_SNP (This);
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
+ switch (Dev->Snm.State) {
+ case EfiSimpleNetworkStopped:
+ Status = EFI_NOT_STARTED;
+ goto Exit;
+ case EfiSimpleNetworkStarted:
+ Status = EFI_DEVICE_ERROR;
+ goto Exit;
+ default:
+ break;
+ }
+
+ VIRTIO_CFG_WRITE (Dev, Generic.VhdrDeviceStatus, 0);
+ VirtioNetShutdownRx (Dev);
+ VirtioNetShutdownTx (Dev);
+ VirtioRingUninit (&Dev->TxRing);
+ VirtioRingUninit (&Dev->RxRing);
+
+ Dev->Snm.State = EfiSimpleNetworkStarted;
+ Status = EFI_SUCCESS;
+
+Exit:
+ gBS->RestoreTPL (OldTpl);
+ return Status;
+}
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