1 /** @file
2 Implementation of resetting a network adapter.
3
4 Copyright (c) 2004 - 2007, Intel Corporation. All rights reserved.<BR>
5 This program and the accompanying materials are licensed and made available under the
6 terms and conditions of the BSD License which accompanies this distribution. The
7 full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
9
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
12
13 **/
14
15 #include "Snp.h"
16
17
18 /**
19 Call UNDI to reset the NIC.
20
21 @param Snp Pointer to the snp driver structure.
22
23 @return EFI_SUCCESSFUL The NIC was reset.
24 @retval EFI_DEVICE_ERROR The NIC cannot be reset.
25
26 **/
27 EFI_STATUS
PxeReset(SNP_DRIVER * Snp)28 PxeReset (
29 SNP_DRIVER *Snp
30 )
31 {
32 Snp->Cdb.OpCode = PXE_OPCODE_RESET;
33 Snp->Cdb.OpFlags = PXE_OPFLAGS_NOT_USED;
34 Snp->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED;
35 Snp->Cdb.DBsize = PXE_DBSIZE_NOT_USED;
36 Snp->Cdb.CPBaddr = PXE_CPBADDR_NOT_USED;
37 Snp->Cdb.DBaddr = PXE_DBADDR_NOT_USED;
38 Snp->Cdb.StatCode = PXE_STATCODE_INITIALIZE;
39 Snp->Cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;
40 Snp->Cdb.IFnum = Snp->IfNum;
41 Snp->Cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;
42
43 //
44 // Issue UNDI command and check result.
45 //
46 DEBUG ((EFI_D_NET, "\nsnp->undi.reset() "));
47
48 (*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);
49
50 if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) {
51 DEBUG (
52 (EFI_D_WARN,
53 "\nsnp->undi32.reset() %xh:%xh\n",
54 Snp->Cdb.StatFlags,
55 Snp->Cdb.StatCode)
56 );
57
58 //
59 // UNDI could not be reset. Return UNDI error.
60 //
61 return EFI_DEVICE_ERROR;
62 }
63
64 return EFI_SUCCESS;
65 }
66
67
68 /**
69 Resets a network adapter and reinitializes it with the parameters that were
70 provided in the previous call to Initialize().
71
72 This function resets a network adapter and reinitializes it with the parameters
73 that were provided in the previous call to Initialize(). The transmit and
74 receive queues are emptied and all pending interrupts are cleared.
75 Receive filters, the station address, the statistics, and the multicast-IP-to-HW
76 MAC addresses are not reset by this call. If the network interface was
77 successfully reset, then EFI_SUCCESS will be returned. If the driver has not
78 been initialized, EFI_DEVICE_ERROR will be returned.
79
80 @param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
81 @param ExtendedVerification Indicates that the driver may perform a more
82 exhaustive verification operation of the device
83 during reset.
84
85 @retval EFI_SUCCESS The network interface was reset.
86 @retval EFI_NOT_STARTED The network interface has not been started.
87 @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
88 @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
89 @retval EFI_UNSUPPORTED This function is not supported by the network interface.
90
91 **/
92 EFI_STATUS
93 EFIAPI
SnpUndi32Reset(IN EFI_SIMPLE_NETWORK_PROTOCOL * This,IN BOOLEAN ExtendedVerification)94 SnpUndi32Reset (
95 IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
96 IN BOOLEAN ExtendedVerification
97 )
98 {
99 SNP_DRIVER *Snp;
100 EFI_TPL OldTpl;
101 EFI_STATUS Status;
102
103 //
104 // Resolve Warning 4 unreferenced parameter problem
105 //
106 ExtendedVerification = 0;
107 DEBUG ((EFI_D_WARN, "ExtendedVerification = %d is not implemented!\n", ExtendedVerification));
108
109 if (This == NULL) {
110 return EFI_INVALID_PARAMETER;
111 }
112
113 Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This);
114
115 OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
116
117 switch (Snp->Mode.State) {
118 case EfiSimpleNetworkInitialized:
119 break;
120
121 case EfiSimpleNetworkStopped:
122 Status = EFI_NOT_STARTED;
123 goto ON_EXIT;
124
125 default:
126 Status = EFI_DEVICE_ERROR;
127 goto ON_EXIT;
128 }
129
130 Status = PxeReset (Snp);
131
132 ON_EXIT:
133 gBS->RestoreTPL (OldTpl);
134
135 return Status;
136 }
137