2 Implementation of resetting a network adapter.
4 Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
5 SPDX-License-Identifier: BSD-2-Clause-Patent
13 Call UNDI to reset the NIC.
15 @param Snp Pointer to the snp driver structure.
17 @return EFI_SUCCESSFUL The NIC was reset.
18 @retval EFI_DEVICE_ERROR The NIC cannot be reset.
26 Snp
->Cdb
.OpCode
= PXE_OPCODE_RESET
;
27 Snp
->Cdb
.OpFlags
= PXE_OPFLAGS_NOT_USED
;
28 Snp
->Cdb
.CPBsize
= PXE_CPBSIZE_NOT_USED
;
29 Snp
->Cdb
.DBsize
= PXE_DBSIZE_NOT_USED
;
30 Snp
->Cdb
.CPBaddr
= PXE_CPBADDR_NOT_USED
;
31 Snp
->Cdb
.DBaddr
= PXE_DBADDR_NOT_USED
;
32 Snp
->Cdb
.StatCode
= PXE_STATCODE_INITIALIZE
;
33 Snp
->Cdb
.StatFlags
= PXE_STATFLAGS_INITIALIZE
;
34 Snp
->Cdb
.IFnum
= Snp
->IfNum
;
35 Snp
->Cdb
.Control
= PXE_CONTROL_LAST_CDB_IN_LIST
;
38 // Issue UNDI command and check result.
40 DEBUG ((EFI_D_NET
, "\nsnp->undi.reset() "));
42 (*Snp
->IssueUndi32Command
) ((UINT64
)(UINTN
) &Snp
->Cdb
);
44 if (Snp
->Cdb
.StatCode
!= PXE_STATCODE_SUCCESS
) {
47 "\nsnp->undi32.reset() %xh:%xh\n",
53 // UNDI could not be reset. Return UNDI error.
55 return EFI_DEVICE_ERROR
;
63 Resets a network adapter and reinitializes it with the parameters that were
64 provided in the previous call to Initialize().
66 This function resets a network adapter and reinitializes it with the parameters
67 that were provided in the previous call to Initialize(). The transmit and
68 receive queues are emptied and all pending interrupts are cleared.
69 Receive filters, the station address, the statistics, and the multicast-IP-to-HW
70 MAC addresses are not reset by this call. If the network interface was
71 successfully reset, then EFI_SUCCESS will be returned. If the driver has not
72 been initialized, EFI_DEVICE_ERROR will be returned.
74 @param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
75 @param ExtendedVerification Indicates that the driver may perform a more
76 exhaustive verification operation of the device
79 @retval EFI_SUCCESS The network interface was reset.
80 @retval EFI_NOT_STARTED The network interface has not been started.
81 @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
82 @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
83 @retval EFI_UNSUPPORTED This function is not supported by the network interface.
89 IN EFI_SIMPLE_NETWORK_PROTOCOL
*This
,
90 IN BOOLEAN ExtendedVerification
98 // Resolve Warning 4 unreferenced parameter problem
100 ExtendedVerification
= 0;
101 DEBUG ((EFI_D_WARN
, "ExtendedVerification = %d is not implemented!\n", ExtendedVerification
));
104 return EFI_INVALID_PARAMETER
;
107 Snp
= EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This
);
109 OldTpl
= gBS
->RaiseTPL (TPL_CALLBACK
);
111 switch (Snp
->Mode
.State
) {
112 case EfiSimpleNetworkInitialized
:
115 case EfiSimpleNetworkStopped
:
116 Status
= EFI_NOT_STARTED
;
120 Status
= EFI_DEVICE_ERROR
;
124 Status
= PxeReset (Snp
);
127 gBS
->RestoreTPL (OldTpl
);