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1 | /** @file\r | |
2 | Implementation of stopping a network interface.\r | |
3 | \r | |
4 | Copyright (c) 2004 - 2007, Intel Corporation. All rights reserved.<BR>\r | |
5 | This program and the accompanying materials are licensed \r | |
6 | and made available under the terms and conditions of the BSD License which \r | |
7 | accompanies this distribution. The full text of the license may be found at \r | |
8 | http://opensource.org/licenses/bsd-license.php \r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "Snp.h"\r | |
16 | \r | |
17 | \r | |
18 | /**\r | |
19 | Call UNDI to stop the interface and changes the snp state.\r | |
20 | \r | |
21 | @param Snp Pointer to snp driver structure\r | |
22 | \r | |
23 | @retval EFI_SUCCESS The network interface was stopped.\r | |
24 | @retval EFI_DEVICE_ERROR SNP is not initialized.\r | |
25 | \r | |
26 | **/\r | |
27 | EFI_STATUS\r | |
28 | PxeStop (\r | |
29 | SNP_DRIVER *Snp\r | |
30 | )\r | |
31 | {\r | |
32 | Snp->Cdb.OpCode = PXE_OPCODE_STOP;\r | |
33 | Snp->Cdb.OpFlags = PXE_OPFLAGS_NOT_USED;\r | |
34 | Snp->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED;\r | |
35 | Snp->Cdb.DBsize = PXE_DBSIZE_NOT_USED;\r | |
36 | Snp->Cdb.CPBaddr = PXE_CPBADDR_NOT_USED;\r | |
37 | Snp->Cdb.DBaddr = PXE_DBADDR_NOT_USED;\r | |
38 | Snp->Cdb.StatCode = PXE_STATCODE_INITIALIZE;\r | |
39 | Snp->Cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;\r | |
40 | Snp->Cdb.IFnum = Snp->IfNum;\r | |
41 | Snp->Cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;\r | |
42 | \r | |
43 | //\r | |
44 | // Issue UNDI command\r | |
45 | //\r | |
46 | DEBUG ((EFI_D_NET, "\nsnp->undi.stop() "));\r | |
47 | \r | |
48 | (*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);\r | |
49 | \r | |
50 | if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) {\r | |
51 | DEBUG (\r | |
52 | (EFI_D_WARN,\r | |
53 | "\nsnp->undi.stop() %xh:%xh\n",\r | |
54 | Snp->Cdb.StatCode,\r | |
55 | Snp->Cdb.StatFlags)\r | |
56 | );\r | |
57 | \r | |
58 | return EFI_DEVICE_ERROR;\r | |
59 | }\r | |
60 | //\r | |
61 | // Set simple network state to Started and return success.\r | |
62 | //\r | |
63 | Snp->Mode.State = EfiSimpleNetworkStopped;\r | |
64 | return EFI_SUCCESS;\r | |
65 | }\r | |
66 | \r | |
67 | \r | |
68 | /**\r | |
69 | Changes the state of a network interface from "started" to "stopped."\r | |
70 | \r | |
71 | This function stops a network interface. This call is only valid if the network\r | |
72 | interface is in the started state. If the network interface was successfully\r | |
73 | stopped, then EFI_SUCCESS will be returned.\r | |
74 | \r | |
75 | @param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL \r | |
76 | instance.\r | |
77 | \r | |
78 | \r | |
79 | @retval EFI_SUCCESS The network interface was stopped.\r | |
80 | @retval EFI_NOT_STARTED The network interface has not been started.\r | |
81 | @retval EFI_INVALID_PARAMETER This parameter was NULL or did not point to a \r | |
82 | valid EFI_SIMPLE_NETWORK_PROTOCOL structure.\r | |
83 | @retval EFI_DEVICE_ERROR The command could not be sent to the network \r | |
84 | interface.\r | |
85 | @retval EFI_UNSUPPORTED This function is not supported by the network \r | |
86 | interface.\r | |
87 | \r | |
88 | **/\r | |
89 | EFI_STATUS\r | |
90 | EFIAPI\r | |
91 | SnpUndi32Stop (\r | |
92 | IN EFI_SIMPLE_NETWORK_PROTOCOL *This\r | |
93 | )\r | |
94 | {\r | |
95 | SNP_DRIVER *Snp;\r | |
96 | EFI_TPL OldTpl;\r | |
97 | EFI_STATUS Status;\r | |
98 | \r | |
99 | if (This == NULL) {\r | |
100 | return EFI_INVALID_PARAMETER;\r | |
101 | }\r | |
102 | \r | |
103 | Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This);\r | |
104 | \r | |
105 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
106 | \r | |
107 | switch (Snp->Mode.State) {\r | |
108 | case EfiSimpleNetworkStarted:\r | |
109 | break;\r | |
110 | \r | |
111 | case EfiSimpleNetworkStopped:\r | |
112 | Status = EFI_NOT_STARTED;\r | |
113 | goto ON_EXIT;\r | |
114 | \r | |
115 | default:\r | |
116 | Status = EFI_DEVICE_ERROR;\r | |
117 | goto ON_EXIT;\r | |
118 | }\r | |
119 | \r | |
120 | Status = PxeStop (Snp);\r | |
121 | \r | |
122 | ON_EXIT:\r | |
123 | gBS->RestoreTPL (OldTpl);\r | |
124 | \r | |
125 | return Status;\r | |
126 | }\r |