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BdsConnect.c
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BdsConnect.c
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/** @file
BDS Lib functions which relate with connect the device
Copyright (c) 2004 - 2008, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "Platform.h"
EFI_STATUS ScanDeviceHandles(EFI_HANDLE ControllerHandle,
UINTN *HandleCount,
EFI_HANDLE **HandleBuffer,
UINT32 **HandleType)
{
EFI_STATUS Status;
UINTN HandleIndex;
EFI_GUID **ProtocolGuidArray;
UINTN ArrayCount;
UINTN ProtocolIndex;
EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenInfo;
UINTN OpenInfoCount;
UINTN OpenInfoIndex;
UINTN ChildIndex;
*HandleCount = 0;
*HandleBuffer = NULL;
*HandleType = NULL;
//
// Retrieve the list of all handles from the handle database
//
Status = gBS->LocateHandleBuffer (AllHandles, NULL, NULL, HandleCount, HandleBuffer);
if (EFI_ERROR (Status)) goto Error;
*HandleType = AllocatePool (*HandleCount * sizeof (UINT32));
if (*HandleType == NULL) goto Error;
for (HandleIndex = 0; HandleIndex < *HandleCount; HandleIndex++) {
(*HandleType)[HandleIndex] = EFI_HANDLE_TYPE_UNKNOWN;
//
// Retrieve the list of all the protocols on each handle
//
Status = gBS->ProtocolsPerHandle (
(*HandleBuffer)[HandleIndex],
&ProtocolGuidArray,
&ArrayCount
);
if (!EFI_ERROR (Status)) {
for (ProtocolIndex = 0; ProtocolIndex < ArrayCount; ProtocolIndex++)
{
if (CompareGuid (ProtocolGuidArray[ProtocolIndex], &gEfiLoadedImageProtocolGuid))
{
(*HandleType)[HandleIndex] |= EFI_HANDLE_TYPE_IMAGE_HANDLE;
}
if (CompareGuid (ProtocolGuidArray[ProtocolIndex], &gEfiDriverBindingProtocolGuid))
{
(*HandleType)[HandleIndex] |= EFI_HANDLE_TYPE_DRIVER_BINDING_HANDLE;
}
if (CompareGuid (ProtocolGuidArray[ProtocolIndex], &gEfiDriverConfigurationProtocolGuid))
{
(*HandleType)[HandleIndex] |= EFI_HANDLE_TYPE_DRIVER_CONFIGURATION_HANDLE;
}
if (CompareGuid (ProtocolGuidArray[ProtocolIndex], &gEfiDriverDiagnosticsProtocolGuid))
{
(*HandleType)[HandleIndex] |= EFI_HANDLE_TYPE_DRIVER_DIAGNOSTICS_HANDLE;
}
if (CompareGuid (ProtocolGuidArray[ProtocolIndex], &gEfiComponentName2ProtocolGuid))
{
(*HandleType)[HandleIndex] |= EFI_HANDLE_TYPE_COMPONENT_NAME_HANDLE;
}
if (CompareGuid (ProtocolGuidArray[ProtocolIndex], &gEfiComponentNameProtocolGuid) )
{
(*HandleType)[HandleIndex] |= EFI_HANDLE_TYPE_COMPONENT_NAME_HANDLE;
}
if (CompareGuid (ProtocolGuidArray[ProtocolIndex], &gEfiDevicePathProtocolGuid))
{
(*HandleType)[HandleIndex] |= EFI_HANDLE_TYPE_DEVICE_HANDLE;
}
//
// Retrieve the list of agents that have opened each protocol
//
Status = gBS->OpenProtocolInformation (
(*HandleBuffer)[HandleIndex],
ProtocolGuidArray[ProtocolIndex],
&OpenInfo,
&OpenInfoCount
);
if (!EFI_ERROR (Status)) {
for (OpenInfoIndex = 0; OpenInfoIndex < OpenInfoCount; OpenInfoIndex++) {
if (OpenInfo[OpenInfoIndex].ControllerHandle == ControllerHandle)
{
if ((OpenInfo[OpenInfoIndex].Attributes & EFI_OPEN_PROTOCOL_BY_DRIVER) == EFI_OPEN_PROTOCOL_BY_DRIVER)
{
for (ChildIndex = 0; ChildIndex < *HandleCount; ChildIndex++)
{
if ((*HandleBuffer)[ChildIndex] == OpenInfo[OpenInfoIndex].AgentHandle)
{
(*HandleType)[ChildIndex] |= EFI_HANDLE_TYPE_DEVICE_DRIVER;
}
}
}
if ((OpenInfo[OpenInfoIndex].Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) == EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER)
{
(*HandleType)[HandleIndex] |= EFI_HANDLE_TYPE_PARENT_HANDLE;
for (ChildIndex = 0; ChildIndex < *HandleCount; ChildIndex++)
{
if ((*HandleBuffer)[ChildIndex] == OpenInfo[OpenInfoIndex].AgentHandle)
{
(*HandleType)[ChildIndex] |= EFI_HANDLE_TYPE_BUS_DRIVER;
}
}
}
}
}
FreePool (OpenInfo);
}
}
FreePool (ProtocolGuidArray);
}
}
return EFI_SUCCESS;
Error:
if (*HandleType != NULL) {
FreePool (*HandleType);
}
if (*HandleBuffer != NULL) {
FreePool (*HandleBuffer);
}
*HandleCount = 0;
*HandleBuffer = NULL;
*HandleType = NULL;
return Status;
}
EFI_STATUS BdsLibConnectMostlyAllEfi()
{
EFI_STATUS Status;
UINTN AllHandleCount;
EFI_HANDLE *AllHandleBuffer;
UINTN Index;
UINTN HandleCount;
EFI_HANDLE *HandleBuffer;
UINT32 *HandleType;
UINTN HandleIndex;
BOOLEAN Parent;
BOOLEAN Device;
EFI_PCI_IO_PROTOCOL* PciIo;
PCI_TYPE00 Pci;
Status = gBS->LocateHandleBuffer (AllHandles, NULL, NULL, &AllHandleCount, &AllHandleBuffer);
if (CheckError(Status, L"locating handle buffer"))
return Status;
for (Index = 0; Index < AllHandleCount; Index++)
{
Status = ScanDeviceHandles(AllHandleBuffer[Index], &HandleCount, &HandleBuffer, &HandleType);
if (EFI_ERROR (Status))
goto Done;
Device = TRUE;
if (HandleType[Index] & EFI_HANDLE_TYPE_DRIVER_BINDING_HANDLE)
Device = FALSE;
if (HandleType[Index] & EFI_HANDLE_TYPE_IMAGE_HANDLE)
Device = FALSE;
if (Device)
{
Parent = FALSE;
for (HandleIndex = 0; HandleIndex < HandleCount; HandleIndex++)
{
if (HandleType[HandleIndex] & EFI_HANDLE_TYPE_PARENT_HANDLE)
Parent = TRUE;
}
if (!Parent)
{
if (HandleType[Index] & EFI_HANDLE_TYPE_DEVICE_HANDLE)
{
Status = gBS->HandleProtocol (AllHandleBuffer[Index], &gEfiPciIoProtocolGuid, (VOID*)&PciIo);
if (!EFI_ERROR (Status))
{
Status = PciIo->Pci.Read (PciIo,EfiPciIoWidthUint32, 0, sizeof (Pci) / sizeof (UINT32), &Pci);
if (!EFI_ERROR (Status))
{
if(IS_PCI_VGA(&Pci)==TRUE)
{
gBS->DisconnectController(AllHandleBuffer[Index], NULL, NULL);
}
}
}
Status = gBS->ConnectController(AllHandleBuffer[Index], NULL, NULL, TRUE);
}
}
}
FreePool (HandleBuffer);
FreePool (HandleType);
}
Done:
FreePool (AllHandleBuffer);
return Status;
}
/**
Connects all drivers to all controllers.
This function make sure all the current system driver will manage
the correspoinding controllers if have. And at the same time, make
sure all the system controllers have driver to manage it if have.
**/
VOID
EFIAPI
BdsLibConnectAllDriversToAllControllers (
VOID
)
{
EFI_STATUS Status;
do {
//
// Connect All EFI 1.10 drivers following EFI 1.10 algorithm
//
//BdsLibConnectAllEfi ();
BdsLibConnectMostlyAllEfi ();
//
// Check to see if it's possible to dispatch an more DXE drivers.
// The BdsLibConnectAllEfi () may have made new DXE drivers show up.
// If anything is Dispatched Status == EFI_SUCCESS and we will try
// the connect again.
//
Status = gDS->Dispatch ();
} while (!EFI_ERROR (Status));
}