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- /** @file
- Implementation of resetting a network adapter.
- Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
- SPDX-License-Identifier: BSD-2-Clause-Patent
- **/
- #include "Snp.h"
- /**
- Call UNDI to reset the NIC.
- @param Snp Pointer to the snp driver structure.
- @return EFI_SUCCESSFUL The NIC was reset.
- @retval EFI_DEVICE_ERROR The NIC cannot be reset.
- **/
- EFI_STATUS
- PxeReset (
- SNP_DRIVER *Snp
- )
- {
- Snp->Cdb.OpCode = PXE_OPCODE_RESET;
- Snp->Cdb.OpFlags = PXE_OPFLAGS_NOT_USED;
- Snp->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED;
- Snp->Cdb.DBsize = PXE_DBSIZE_NOT_USED;
- Snp->Cdb.CPBaddr = PXE_CPBADDR_NOT_USED;
- Snp->Cdb.DBaddr = PXE_DBADDR_NOT_USED;
- Snp->Cdb.StatCode = PXE_STATCODE_INITIALIZE;
- Snp->Cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;
- Snp->Cdb.IFnum = Snp->IfNum;
- Snp->Cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;
- //
- // Issue UNDI command and check result.
- //
- DEBUG ((DEBUG_NET, "\nsnp->undi.reset() "));
- (*Snp->IssueUndi32Command)((UINT64)(UINTN)&Snp->Cdb);
- if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) {
- DEBUG (
- (DEBUG_WARN,
- "\nsnp->undi32.reset() %xh:%xh\n",
- Snp->Cdb.StatFlags,
- Snp->Cdb.StatCode)
- );
- //
- // UNDI could not be reset. Return UNDI error.
- //
- return EFI_DEVICE_ERROR;
- }
- return EFI_SUCCESS;
- }
- /**
- Resets a network adapter and reinitializes it with the parameters that were
- provided in the previous call to Initialize().
- This function resets a network adapter and reinitializes it with the parameters
- that were provided in the previous call to Initialize(). The transmit and
- receive queues are emptied and all pending interrupts are cleared.
- Receive filters, the station address, the statistics, and the multicast-IP-to-HW
- MAC addresses are not reset by this call. If the network interface was
- successfully reset, then EFI_SUCCESS will be returned. If the driver has not
- been initialized, EFI_DEVICE_ERROR will be returned.
- @param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
- @param ExtendedVerification Indicates that the driver may perform a more
- exhaustive verification operation of the device
- during reset.
- @retval EFI_SUCCESS The network interface was reset.
- @retval EFI_NOT_STARTED The network interface has not been started.
- @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
- @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
- @retval EFI_UNSUPPORTED This function is not supported by the network interface.
- **/
- EFI_STATUS
- EFIAPI
- SnpUndi32Reset (
- IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
- IN BOOLEAN ExtendedVerification
- )
- {
- SNP_DRIVER *Snp;
- EFI_TPL OldTpl;
- EFI_STATUS Status;
- //
- // Resolve Warning 4 unreferenced parameter problem
- //
- ExtendedVerification = 0;
- DEBUG ((DEBUG_WARN, "ExtendedVerification = %d is not implemented!\n", ExtendedVerification));
- if (This == NULL) {
- return EFI_INVALID_PARAMETER;
- }
- Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This);
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
- switch (Snp->Mode.State) {
- case EfiSimpleNetworkInitialized:
- break;
- case EfiSimpleNetworkStopped:
- Status = EFI_NOT_STARTED;
- goto ON_EXIT;
- default:
- Status = EFI_DEVICE_ERROR;
- goto ON_EXIT;
- }
- Status = PxeReset (Snp);
- ON_EXIT:
- gBS->RestoreTPL (OldTpl);
- return Status;
- }
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