2 Implementation of resetting a network adapter.
4 Copyright (c) 2004 - 2007, Intel Corporation.<BR> All rights reserved. This
5 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
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.
19 Call UNDI to reset the NIC.
21 @param Snp Pointer to the snp driver structure.
23 @return EFI_SUCCESSFUL The NIC was reset.
24 @retval EFI_DEVICE_ERROR The NIC cannot be reset.
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
;
44 // Issue UNDI command and check result.
46 DEBUG ((EFI_D_NET
, "\nsnp->undi.reset() "));
48 (*Snp
->IssueUndi32Command
) ((UINT64
)(UINTN
) &Snp
->Cdb
);
50 if (Snp
->Cdb
.StatCode
!= PXE_STATCODE_SUCCESS
) {
53 "\nsnp->undi32.reset() %xh:%xh\n",
59 // UNDI could not be reset. Return UNDI error.
61 return EFI_DEVICE_ERROR
;
69 Resets a network adapter and reinitializes it with the parameters that were
70 provided in the previous call to Initialize().
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.
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
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.
95 IN EFI_SIMPLE_NETWORK_PROTOCOL
*This
,
96 IN BOOLEAN ExtendedVerification
104 // Resolve Warning 4 unreferenced parameter problem
106 ExtendedVerification
= 0;
107 DEBUG ((EFI_D_WARN
, "ExtendedVerification = %d is not implemented!\n", ExtendedVerification
));
110 return EFI_INVALID_PARAMETER
;
113 Snp
= EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This
);
115 OldTpl
= gBS
->RaiseTPL (TPL_CALLBACK
);
117 switch (Snp
->Mode
.State
) {
118 case EfiSimpleNetworkInitialized
:
121 case EfiSimpleNetworkStopped
:
122 Status
= EFI_NOT_STARTED
;
126 Status
= EFI_DEVICE_ERROR
;
130 Status
= PxeReset (Snp
);
133 gBS
->RestoreTPL (OldTpl
);