Shutdown.c

Go to the documentation of this file.

 
#include "Snp.h"
 
EFI_STATUS
PxeShutdown (
  IN SNP_DRIVER  *Snp
  )
{
  Snp->Cdb.OpCode    = PXE_OPCODE_SHUTDOWN;
  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.shutdown()  "));
 
  (*Snp->IssueUndi32Command)((UINT64)(UINTN)&Snp->Cdb);
 
  if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) {
    //
    // UNDI could not be shutdown. Return UNDI error.
    //
    DEBUG ((DEBUG_WARN, "\nsnp->undi.shutdown()  %xh:%xh\n", Snp->Cdb.StatFlags, Snp->Cdb.StatCode));
 
    return EFI_DEVICE_ERROR;
  }
 
  //
  // Free allocated memory.
  //
  if (Snp->TxRxBuffer != NULL) {
    Snp->PciIo->FreeBuffer (
                  Snp->PciIo,
                  SNP_MEM_PAGES (Snp->TxRxBufferSize),
                  (VOID *)Snp->TxRxBuffer
                  );
  }
 
  Snp->TxRxBuffer     = NULL;
  Snp->TxRxBufferSize = 0;
 
  return EFI_SUCCESS;
}
 
EFI_STATUS
EFIAPI
SnpUndi32Shutdown (
  IN EFI_SIMPLE_NETWORK_PROTOCOL  *This
  )
{
  SNP_DRIVER  *Snp;
  EFI_STATUS  Status;
  EFI_TPL     OldTpl;
 
  //
  // Get pointer to SNP driver instance for *This.
  //
  if (This == NULL) {
    return EFI_INVALID_PARAMETER;
  }
 
  Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This);
 
  OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
 
  //
  // Return error if the SNP is not initialized.
  //
  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 = PxeShutdown (Snp);
 
  Snp->Mode.State                = EfiSimpleNetworkStarted;
  Snp->Mode.ReceiveFilterSetting = 0;
 
  Snp->Mode.MCastFilterCount     = 0;
  Snp->Mode.ReceiveFilterSetting = 0;
  ZeroMem (Snp->Mode.MCastFilter, sizeof Snp->Mode.MCastFilter);
  CopyMem (
    &Snp->Mode.CurrentAddress,
    &Snp->Mode.PermanentAddress,
    sizeof (EFI_MAC_ADDRESS)
    );
 
  gBS->CloseEvent (Snp->Snp.WaitForPacket);
 
ON_EXIT:
  gBS->RestoreTPL (OldTpl);
 
  return Status;
}