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1 | /** @file\r |
2 | \r | |
3 | Implementation of the SNP.Shutdown() function and its private helpers if any.\r | |
4 | \r | |
5 | Copyright (C) 2013, Red Hat, Inc.\r | |
6 | Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r | |
fc2c1543 | 7 | Copyright (c) 2017, AMD Inc, All rights reserved.<BR>\r |
80682e9b LE |
8 | \r |
9 | This program and the accompanying materials are licensed and made available\r | |
10 | under the terms and conditions of the BSD License which accompanies this\r | |
11 | distribution. The full text of the license may be found at\r | |
12 | http://opensource.org/licenses/bsd-license.php\r | |
13 | \r | |
14 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT\r | |
15 | WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
16 | \r | |
17 | **/\r | |
18 | \r | |
19 | #include <Library/UefiBootServicesTableLib.h>\r | |
20 | \r | |
21 | #include "VirtioNet.h"\r | |
22 | \r | |
23 | /**\r | |
24 | Resets a network adapter and leaves it in a state that is safe for another\r | |
25 | driver to initialize.\r | |
26 | \r | |
27 | @param This Protocol instance pointer.\r | |
28 | \r | |
29 | @retval EFI_SUCCESS The network interface was shutdown.\r | |
30 | @retval EFI_NOT_STARTED The network interface has not been started.\r | |
31 | @retval EFI_INVALID_PARAMETER One or more of the parameters has an\r | |
32 | unsupported value.\r | |
33 | @retval EFI_DEVICE_ERROR The command could not be sent to the network\r | |
34 | interface.\r | |
35 | @retval EFI_UNSUPPORTED This function is not supported by the network\r | |
36 | interface.\r | |
37 | \r | |
38 | **/\r | |
39 | \r | |
40 | EFI_STATUS\r | |
41 | EFIAPI\r | |
42 | VirtioNetShutdown (\r | |
43 | IN EFI_SIMPLE_NETWORK_PROTOCOL *This\r | |
44 | )\r | |
45 | {\r | |
46 | VNET_DEV *Dev;\r | |
47 | EFI_TPL OldTpl;\r | |
48 | EFI_STATUS Status;\r | |
49 | \r | |
50 | if (This == NULL) {\r | |
51 | return EFI_INVALID_PARAMETER;\r | |
52 | }\r | |
53 | \r | |
54 | Dev = VIRTIO_NET_FROM_SNP (This);\r | |
55 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
56 | switch (Dev->Snm.State) {\r | |
57 | case EfiSimpleNetworkStopped:\r | |
58 | Status = EFI_NOT_STARTED;\r | |
59 | goto Exit;\r | |
60 | case EfiSimpleNetworkStarted:\r | |
61 | Status = EFI_DEVICE_ERROR;\r | |
62 | goto Exit;\r | |
63 | default:\r | |
64 | break;\r | |
65 | }\r | |
66 | \r | |
56f65ed8 | 67 | Dev->VirtIo->SetDeviceStatus (Dev->VirtIo, 0);\r |
80682e9b LE |
68 | VirtioNetShutdownRx (Dev);\r |
69 | VirtioNetShutdownTx (Dev);\r | |
940baec0 BS |
70 | VirtioNetUninitRing (Dev, &Dev->TxRing, Dev->TxRingMap);\r |
71 | VirtioNetUninitRing (Dev, &Dev->RxRing, Dev->RxRingMap);\r | |
80682e9b LE |
72 | \r |
73 | Dev->Snm.State = EfiSimpleNetworkStarted;\r | |
74 | Status = EFI_SUCCESS;\r | |
75 | \r | |
76 | Exit:\r | |
77 | gBS->RestoreTPL (OldTpl);\r | |
78 | return Status;\r | |
79 | }\r |