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/** @file
Implementation of starting 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 start the interface and changes the snp state.
@param Snp pointer to snp driver structure.
@retval EFI_SUCCESS UNDI is started successfully.
@retval EFI_DEVICE_ERROR UNDI could not be started.
**/
EFI_STATUS
PxeStart (
IN SNP_DRIVER *Snp
)
{
PXE_CPB_START_31 *Cpb31;
Cpb31 = Snp->Cpb;
//
// Initialize UNDI Start CDB for H/W UNDI
//
Snp->Cdb.OpCode = PXE_OPCODE_START;
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;
//
// Make changes to H/W UNDI Start CDB if this is
// a S/W UNDI.
//
if (Snp->IsSwUndi) {
Snp->Cdb.CPBsize = (UINT16) sizeof (PXE_CPB_START_31);
Snp->Cdb.CPBaddr = (UINT64)(UINTN) Cpb31;
Cpb31->Delay = (UINT64)(UINTN) &SnpUndi32CallbackDelay;
Cpb31->Block = (UINT64)(UINTN) &SnpUndi32CallbackBlock;
//
// Virtual == Physical. This can be set to zero.
//
Cpb31->Virt2Phys = (UINT64)(UINTN) 0;
Cpb31->Mem_IO = (UINT64)(UINTN) &SnpUndi32CallbackMemio;
Cpb31->Map_Mem = (UINT64)(UINTN) &SnpUndi32CallbackMap;
Cpb31->UnMap_Mem = (UINT64)(UINTN) &SnpUndi32CallbackUnmap;
Cpb31->Sync_Mem = (UINT64)(UINTN) &SnpUndi32CallbackSync;
Cpb31->Unique_ID = (UINT64)(UINTN) Snp;
}
//
// Issue UNDI command and check result.
//
DEBUG ((DEBUG_NET, "\nsnp->undi.start() "));
(*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);
if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) {
//
// UNDI could not be started. Return UNDI error.
//
DEBUG (
(DEBUG_ERROR,
"\nsnp->undi.start() %xh:%xh\n",
Snp->Cdb.StatCode,
Snp->Cdb.StatFlags)
);
return EFI_DEVICE_ERROR;
}
//
// Set simple network state to Started and return success.
//
Snp->Mode.State = EfiSimpleNetworkStarted;
return EFI_SUCCESS;
}
/**
Change the state of a network interface from "stopped" to "started."
This function starts a network interface. If the network interface successfully
starts, then EFI_SUCCESS will be returned.
@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
@retval EFI_SUCCESS The network interface was started.
@retval EFI_ALREADY_STARTED The network interface is already in the started state.
@retval EFI_INVALID_PARAMETER This parameter was NULL or did not point to a valid
EFI_SIMPLE_NETWORK_PROTOCOL structure.
@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
SnpUndi32Start (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This
)
{
SNP_DRIVER *Snp;
EFI_STATUS Status;
UINTN Index;
EFI_TPL OldTpl;
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 EfiSimpleNetworkStopped:
break;
case EfiSimpleNetworkStarted:
case EfiSimpleNetworkInitialized:
Status = EFI_ALREADY_STARTED;
goto ON_EXIT;
default:
Status = EFI_DEVICE_ERROR;
goto ON_EXIT;
}
Status = PxeStart (Snp);
if (EFI_ERROR (Status)) {
goto ON_EXIT;
}
//
// clear the map_list in SNP structure
//
for (Index = 0; Index < MAX_MAP_LENGTH; Index++) {
Snp->MapList[Index].VirtualAddress = 0;
Snp->MapList[Index].MapCookie = 0;
}
Snp->Mode.MCastFilterCount = 0;
ON_EXIT:
gBS->RestoreTPL (OldTpl);
return Status;
}
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