diff options
Diffstat (limited to 'MdeModulePkg/Bus/Pci/PciBusDxe/PciDeviceSupport.c')
| -rw-r--r-- | MdeModulePkg/Bus/Pci/PciBusDxe/PciDeviceSupport.c | 1155 |
1 files changed, 0 insertions, 1155 deletions
diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciDeviceSupport.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciDeviceSupport.c deleted file mode 100644 index c0227fa2b6..0000000000 --- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciDeviceSupport.c +++ /dev/null @@ -1,1155 +0,0 @@ -/** @file
- Supporting functions implementaion for PCI devices management.
-
-Copyright (c) 2006 - 2015, 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 "PciBus.h"
-
-//
-// This device structure is serviced as a header.
-// Its next field points to the first root bridge device node.
-//
-LIST_ENTRY mPciDevicePool;
-
-/**
- Initialize the PCI devices pool.
-
-**/
-VOID
-InitializePciDevicePool (
- VOID
- )
-{
- InitializeListHead (&mPciDevicePool);
-}
-
-/**
- Insert a root bridge into PCI device pool.
-
- @param RootBridge A pointer to the PCI_IO_DEVICE.
-
-**/
-VOID
-InsertRootBridge (
- IN PCI_IO_DEVICE *RootBridge
- )
-{
- InsertTailList (&mPciDevicePool, &(RootBridge->Link));
-}
-
-/**
- This function is used to insert a PCI device node under
- a bridge.
-
- @param Bridge The PCI bridge.
- @param PciDeviceNode The PCI device needs inserting.
-
-**/
-VOID
-InsertPciDevice (
- IN PCI_IO_DEVICE *Bridge,
- IN PCI_IO_DEVICE *PciDeviceNode
- )
-{
- InsertTailList (&Bridge->ChildList, &(PciDeviceNode->Link));
- PciDeviceNode->Parent = Bridge;
-}
-
-/**
- Destroy root bridge and remove it from deivce tree.
-
- @param RootBridge The bridge want to be removed.
-
-**/
-VOID
-DestroyRootBridge (
- IN PCI_IO_DEVICE *RootBridge
- )
-{
- DestroyPciDeviceTree (RootBridge);
-
- FreePciDevice (RootBridge);
-}
-
-/**
- Destroy a pci device node.
-
- All direct or indirect allocated resource for this node will be freed.
-
- @param PciIoDevice A pointer to the PCI_IO_DEVICE to be destoried.
-
-**/
-VOID
-FreePciDevice (
- IN PCI_IO_DEVICE *PciIoDevice
- )
-{
- ASSERT (PciIoDevice != NULL);
- //
- // Assume all children have been removed underneath this device
- //
- if (PciIoDevice->ResourcePaddingDescriptors != NULL) {
- FreePool (PciIoDevice->ResourcePaddingDescriptors);
- }
-
- if (PciIoDevice->DevicePath != NULL) {
- FreePool (PciIoDevice->DevicePath);
- }
-
- FreePool (PciIoDevice);
-}
-
-/**
- Destroy all the pci device node under the bridge.
- Bridge itself is not included.
-
- @param Bridge A pointer to the PCI_IO_DEVICE.
-
-**/
-VOID
-DestroyPciDeviceTree (
- IN PCI_IO_DEVICE *Bridge
- )
-{
- LIST_ENTRY *CurrentLink;
- PCI_IO_DEVICE *Temp;
-
- while (!IsListEmpty (&Bridge->ChildList)) {
-
- CurrentLink = Bridge->ChildList.ForwardLink;
-
- //
- // Remove this node from the linked list
- //
- RemoveEntryList (CurrentLink);
-
- Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);
-
- if (!IsListEmpty (&Temp->ChildList)) {
- DestroyPciDeviceTree (Temp);
- }
-
- FreePciDevice (Temp);
- }
-}
-
-/**
- Destroy all device nodes under the root bridge
- specified by Controller.
-
- The root bridge itself is also included.
-
- @param Controller Root bridge handle.
-
- @retval EFI_SUCCESS Destory all devcie nodes successfully.
- @retval EFI_NOT_FOUND Cannot find any PCI device under specified
- root bridge.
-
-**/
-EFI_STATUS
-DestroyRootBridgeByHandle (
- IN EFI_HANDLE Controller
- )
-{
-
- LIST_ENTRY *CurrentLink;
- PCI_IO_DEVICE *Temp;
-
- CurrentLink = mPciDevicePool.ForwardLink;
-
- while (CurrentLink != NULL && CurrentLink != &mPciDevicePool) {
- Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);
-
- if (Temp->Handle == Controller) {
-
- RemoveEntryList (CurrentLink);
-
- DestroyPciDeviceTree (Temp);
-
- FreePciDevice (Temp);
-
- return EFI_SUCCESS;
- }
-
- CurrentLink = CurrentLink->ForwardLink;
- }
-
- return EFI_NOT_FOUND;
-}
-
-/**
- This function registers the PCI IO device.
-
- It creates a handle for this PCI IO device (if the handle does not exist), attaches
- appropriate protocols onto the handle, does necessary initialization, and sets up
- parent/child relationship with its bus controller.
-
- @param Controller An EFI handle for the PCI bus controller.
- @param PciIoDevice A PCI_IO_DEVICE pointer to the PCI IO device to be registered.
- @param Handle A pointer to hold the returned EFI handle for the PCI IO device.
-
- @retval EFI_SUCCESS The PCI device is successfully registered.
- @retval other An error occurred when registering the PCI device.
-
-**/
-EFI_STATUS
-RegisterPciDevice (
- IN EFI_HANDLE Controller,
- IN PCI_IO_DEVICE *PciIoDevice,
- OUT EFI_HANDLE *Handle OPTIONAL
- )
-{
- EFI_STATUS Status;
- VOID *PlatformOpRomBuffer;
- UINTN PlatformOpRomSize;
- UINT8 PciExpressCapRegOffset;
- EFI_PCI_IO_PROTOCOL *PciIo;
- UINT8 Data8;
- BOOLEAN HasEfiImage;
-
- //
- // Install the pciio protocol, device path protocol
- //
- Status = gBS->InstallMultipleProtocolInterfaces (
- &PciIoDevice->Handle,
- &gEfiDevicePathProtocolGuid,
- PciIoDevice->DevicePath,
- &gEfiPciIoProtocolGuid,
- &PciIoDevice->PciIo,
- NULL
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Detect if PCI Express Device
- //
- PciExpressCapRegOffset = 0;
- Status = LocateCapabilityRegBlock (
- PciIoDevice,
- EFI_PCI_CAPABILITY_ID_PCIEXP,
- &PciExpressCapRegOffset,
- NULL
- );
- if (!EFI_ERROR (Status)) {
- PciIoDevice->IsPciExp = TRUE;
- }
-
- //
- // Force Interrupt line to "Unknown" or "No Connection"
- //
- PciIo = &(PciIoDevice->PciIo);
- Data8 = PCI_INT_LINE_UNKNOWN;
- PciIo->Pci.Write (PciIo, EfiPciIoWidthUint8, 0x3C, 1, &Data8);
-
- //
- // Process OpRom
- //
- if (!PciIoDevice->AllOpRomProcessed) {
-
- //
- // Get the OpRom provided by platform
- //
- if (gPciPlatformProtocol != NULL) {
- Status = gPciPlatformProtocol->GetPciRom (
- gPciPlatformProtocol,
- PciIoDevice->Handle,
- &PlatformOpRomBuffer,
- &PlatformOpRomSize
- );
- if (!EFI_ERROR (Status)) {
- PciIoDevice->EmbeddedRom = FALSE;
- PciIoDevice->RomSize = PlatformOpRomSize;
- PciIoDevice->PciIo.RomSize = PlatformOpRomSize;
- PciIoDevice->PciIo.RomImage = PlatformOpRomBuffer;
- //
- // For OpROM read from gPciPlatformProtocol:
- // Add the Rom Image to internal database for later PCI light enumeration
- //
- PciRomAddImageMapping (
- NULL,
- PciIoDevice->PciRootBridgeIo->SegmentNumber,
- PciIoDevice->BusNumber,
- PciIoDevice->DeviceNumber,
- PciIoDevice->FunctionNumber,
- (UINT64) (UINTN) PciIoDevice->PciIo.RomImage,
- PciIoDevice->PciIo.RomSize
- );
- }
- } else if (gPciOverrideProtocol != NULL) {
- Status = gPciOverrideProtocol->GetPciRom (
- gPciOverrideProtocol,
- PciIoDevice->Handle,
- &PlatformOpRomBuffer,
- &PlatformOpRomSize
- );
- if (!EFI_ERROR (Status)) {
- PciIoDevice->EmbeddedRom = FALSE;
- PciIoDevice->RomSize = PlatformOpRomSize;
- PciIoDevice->PciIo.RomSize = PlatformOpRomSize;
- PciIoDevice->PciIo.RomImage = PlatformOpRomBuffer;
- //
- // For OpROM read from gPciOverrideProtocol:
- // Add the Rom Image to internal database for later PCI light enumeration
- //
- PciRomAddImageMapping (
- NULL,
- PciIoDevice->PciRootBridgeIo->SegmentNumber,
- PciIoDevice->BusNumber,
- PciIoDevice->DeviceNumber,
- PciIoDevice->FunctionNumber,
- (UINT64) (UINTN) PciIoDevice->PciIo.RomImage,
- PciIoDevice->PciIo.RomSize
- );
- }
- }
- }
-
- //
- // Determine if there are EFI images in the option rom
- //
- HasEfiImage = ContainEfiImage (PciIoDevice->PciIo.RomImage, PciIoDevice->PciIo.RomSize);
-
- if (HasEfiImage) {
- Status = gBS->InstallMultipleProtocolInterfaces (
- &PciIoDevice->Handle,
- &gEfiLoadFile2ProtocolGuid,
- &PciIoDevice->LoadFile2,
- NULL
- );
- if (EFI_ERROR (Status)) {
- gBS->UninstallMultipleProtocolInterfaces (
- &PciIoDevice->Handle,
- &gEfiDevicePathProtocolGuid,
- PciIoDevice->DevicePath,
- &gEfiPciIoProtocolGuid,
- &PciIoDevice->PciIo,
- NULL
- );
- return Status;
- }
- }
-
-
- if (!PciIoDevice->AllOpRomProcessed) {
-
- PciIoDevice->AllOpRomProcessed = TRUE;
-
- //
- // Dispatch the EFI OpRom for the PCI device.
- // The OpRom is got from platform in the above code
- // or loaded from device in the previous round of bus enumeration
- //
- if (HasEfiImage) {
- ProcessOpRomImage (PciIoDevice);
- }
- }
-
- if (PciIoDevice->BusOverride) {
- //
- // Install Bus Specific Driver Override Protocol
- //
- Status = gBS->InstallMultipleProtocolInterfaces (
- &PciIoDevice->Handle,
- &gEfiBusSpecificDriverOverrideProtocolGuid,
- &PciIoDevice->PciDriverOverride,
- NULL
- );
- if (EFI_ERROR (Status)) {
- gBS->UninstallMultipleProtocolInterfaces (
- &PciIoDevice->Handle,
- &gEfiDevicePathProtocolGuid,
- PciIoDevice->DevicePath,
- &gEfiPciIoProtocolGuid,
- &PciIoDevice->PciIo,
- NULL
- );
- if (HasEfiImage) {
- gBS->UninstallMultipleProtocolInterfaces (
- &PciIoDevice->Handle,
- &gEfiLoadFile2ProtocolGuid,
- &PciIoDevice->LoadFile2,
- NULL
- );
- }
-
- return Status;
- }
- }
-
- Status = gBS->OpenProtocol (
- Controller,
- &gEfiPciRootBridgeIoProtocolGuid,
- (VOID **) &(PciIoDevice->PciRootBridgeIo),
- gPciBusDriverBinding.DriverBindingHandle,
- PciIoDevice->Handle,
- EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- if (Handle != NULL) {
- *Handle = PciIoDevice->Handle;
- }
-
- //
- // Indicate the pci device is registered
- //
- PciIoDevice->Registered = TRUE;
-
- return EFI_SUCCESS;
-}
-
-/**
- This function is used to remove the whole PCI devices on the specified bridge from
- the root bridge.
-
- @param RootBridgeHandle The root bridge device handle.
- @param Bridge The bridge device to be removed.
-
-**/
-VOID
-RemoveAllPciDeviceOnBridge (
- EFI_HANDLE RootBridgeHandle,
- PCI_IO_DEVICE *Bridge
- )
-{
- LIST_ENTRY *CurrentLink;
- PCI_IO_DEVICE *Temp;
-
- while (!IsListEmpty (&Bridge->ChildList)) {
-
- CurrentLink = Bridge->ChildList.ForwardLink;
- Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);
-
- //
- // Check if the current node has been deregistered before
- // If it is not, then deregister it
- //
- if (Temp->Registered) {
- DeRegisterPciDevice (RootBridgeHandle, Temp->Handle);
- }
-
- //
- // Remove this node from the linked list
- //
- RemoveEntryList (CurrentLink);
-
- if (!IsListEmpty (&Temp->ChildList)) {
- RemoveAllPciDeviceOnBridge (RootBridgeHandle, Temp);
- }
-
- FreePciDevice (Temp);
- }
-}
-
-/**
- This function is used to de-register the PCI IO device.
-
- That includes un-installing PciIo protocol from the specified PCI
- device handle.
-
- @param Controller An EFI handle for the PCI bus controller.
- @param Handle PCI device handle.
-
- @retval EFI_SUCCESS The PCI device is successfully de-registered.
- @retval other An error occurred when de-registering the PCI device.
-
-**/
-EFI_STATUS
-DeRegisterPciDevice (
- IN EFI_HANDLE Controller,
- IN EFI_HANDLE Handle
- )
-
-{
- EFI_PCI_IO_PROTOCOL *PciIo;
- EFI_STATUS Status;
- PCI_IO_DEVICE *PciIoDevice;
- PCI_IO_DEVICE *Node;
- LIST_ENTRY *CurrentLink;
- EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
-
- Status = gBS->OpenProtocol (
- Handle,
- &gEfiPciIoProtocolGuid,
- (VOID **) &PciIo,
- gPciBusDriverBinding.DriverBindingHandle,
- Controller,
- EFI_OPEN_PROTOCOL_GET_PROTOCOL
- );
- if (!EFI_ERROR (Status)) {
- PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (PciIo);
-
- //
- // If it is already de-registered
- //
- if (!PciIoDevice->Registered) {
- return EFI_SUCCESS;
- }
-
- //
- // If it is PPB, first de-register its children
- //
-
- if (!IsListEmpty (&PciIoDevice->ChildList)) {
-
- CurrentLink = PciIoDevice->ChildList.ForwardLink;
-
- while (CurrentLink != NULL && CurrentLink != &PciIoDevice->ChildList) {
- Node = PCI_IO_DEVICE_FROM_LINK (CurrentLink);
- Status = DeRegisterPciDevice (Controller, Node->Handle);
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- CurrentLink = CurrentLink->ForwardLink;
- }
- }
-
- //
- // Close the child handle
- //
- Status = gBS->CloseProtocol (
- Controller,
- &gEfiPciRootBridgeIoProtocolGuid,
- gPciBusDriverBinding.DriverBindingHandle,
- Handle
- );
-
- //
- // Un-install the Device Path protocol and PCI I/O protocol
- // and Bus Specific Driver Override protocol if needed.
- //
- if (PciIoDevice->BusOverride) {
- Status = gBS->UninstallMultipleProtocolInterfaces (
- Handle,
- &gEfiDevicePathProtocolGuid,
- PciIoDevice->DevicePath,
- &gEfiPciIoProtocolGuid,
- &PciIoDevice->PciIo,
- &gEfiBusSpecificDriverOverrideProtocolGuid,
- &PciIoDevice->PciDriverOverride,
- NULL
- );
- } else {
- Status = gBS->UninstallMultipleProtocolInterfaces (
- Handle,
- &gEfiDevicePathProtocolGuid,
- PciIoDevice->DevicePath,
- &gEfiPciIoProtocolGuid,
- &PciIoDevice->PciIo,
- NULL
- );
- }
-
- if (!EFI_ERROR (Status)) {
- //
- // Try to uninstall LoadFile2 protocol if exists
- //
- Status = gBS->OpenProtocol (
- Handle,
- &gEfiLoadFile2ProtocolGuid,
- NULL,
- gPciBusDriverBinding.DriverBindingHandle,
- Controller,
- EFI_OPEN_PROTOCOL_TEST_PROTOCOL
- );
- if (!EFI_ERROR (Status)) {
- Status = gBS->UninstallMultipleProtocolInterfaces (
- Handle,
- &gEfiLoadFile2ProtocolGuid,
- &PciIoDevice->LoadFile2,
- NULL
- );
- }
- //
- // Restore Status
- //
- Status = EFI_SUCCESS;
- }
-
-
- if (EFI_ERROR (Status)) {
- gBS->OpenProtocol (
- Controller,
- &gEfiPciRootBridgeIoProtocolGuid,
- (VOID **) &PciRootBridgeIo,
- gPciBusDriverBinding.DriverBindingHandle,
- Handle,
- EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
- );
- return Status;
- }
-
- //
- // The Device Driver should disable this device after disconnect
- // so the Pci Bus driver will not touch this device any more.
- // Restore the register field to the original value
- //
- PciIoDevice->Registered = FALSE;
- PciIoDevice->Handle = NULL;
- } else {
-
- //
- // Handle may be closed before
- //
- return EFI_SUCCESS;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Start to manage the PCI device on the specified root bridge or PCI-PCI Bridge.
-
- @param Controller The root bridge handle.
- @param RootBridge A pointer to the PCI_IO_DEVICE.
- @param RemainingDevicePath A pointer to the EFI_DEVICE_PATH_PROTOCOL.
- @param NumberOfChildren Children number.
- @param ChildHandleBuffer A pointer to the child handle buffer.
-
- @retval EFI_NOT_READY Device is not allocated.
- @retval EFI_UNSUPPORTED Device only support PCI-PCI bridge.
- @retval EFI_NOT_FOUND Can not find the specific device.
- @retval EFI_SUCCESS Success to start Pci devices on bridge.
-
-**/
-EFI_STATUS
-StartPciDevicesOnBridge (
- IN EFI_HANDLE Controller,
- IN PCI_IO_DEVICE *RootBridge,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath,
- IN OUT UINT8 *NumberOfChildren,
- IN OUT EFI_HANDLE *ChildHandleBuffer
- )
-
-{
- PCI_IO_DEVICE *PciIoDevice;
- EFI_DEV_PATH_PTR Node;
- EFI_DEVICE_PATH_PROTOCOL *CurrentDevicePath;
- EFI_STATUS Status;
- LIST_ENTRY *CurrentLink;
- UINT64 Supports;
-
- PciIoDevice = NULL;
- CurrentLink = RootBridge->ChildList.ForwardLink;
-
- while (CurrentLink != NULL && CurrentLink != &RootBridge->ChildList) {
-
- PciIoDevice = PCI_IO_DEVICE_FROM_LINK (CurrentLink);
- if (RemainingDevicePath != NULL) {
-
- Node.DevPath = RemainingDevicePath;
-
- if (Node.Pci->Device != PciIoDevice->DeviceNumber ||
- Node.Pci->Function != PciIoDevice->FunctionNumber) {
- CurrentLink = CurrentLink->ForwardLink;
- continue;
- }
-
- //
- // Check if the device has been assigned with required resource
- //
- if (!PciIoDevice->Allocated) {
- return EFI_NOT_READY;
- }
-
- //
- // Check if the current node has been registered before
- // If it is not, register it
- //
- if (!PciIoDevice->Registered) {
- Status = RegisterPciDevice (
- Controller,
- PciIoDevice,
- NULL
- );
-
- }
-
- if (NumberOfChildren != NULL && ChildHandleBuffer != NULL && PciIoDevice->Registered) {
- ChildHandleBuffer[*NumberOfChildren] = PciIoDevice->Handle;
- (*NumberOfChildren)++;
- }
-
- //
- // Get the next device path
- //
- CurrentDevicePath = NextDevicePathNode (RemainingDevicePath);
- if (IsDevicePathEnd (CurrentDevicePath)) {
- return EFI_SUCCESS;
- }
-
- //
- // If it is a PPB
- //
- if (IS_PCI_BRIDGE (&PciIoDevice->Pci)) {
- Status = StartPciDevicesOnBridge (
- Controller,
- PciIoDevice,
- CurrentDevicePath,
- NumberOfChildren,
- ChildHandleBuffer
- );
-
- PciIoDevice->PciIo.Attributes (
- &(PciIoDevice->PciIo),
- EfiPciIoAttributeOperationSupported,
- 0,
- &Supports
- );
- Supports &= (UINT64)EFI_PCI_DEVICE_ENABLE;
- PciIoDevice->PciIo.Attributes (
- &(PciIoDevice->PciIo),
- EfiPciIoAttributeOperationEnable,
- Supports,
- NULL
- );
-
- return Status;
- } else {
-
- //
- // Currently, the PCI bus driver only support PCI-PCI bridge
- //
- return EFI_UNSUPPORTED;
- }
-
- } else {
-
- //
- // If remaining device path is NULL,
- // try to enable all the pci devices under this bridge
- //
- if (!PciIoDevice->Registered && PciIoDevice->Allocated) {
- Status = RegisterPciDevice (
- Controller,
- PciIoDevice,
- NULL
- );
-
- }
-
- if (NumberOfChildren != NULL && ChildHandleBuffer != NULL && PciIoDevice->Registered) {
- ChildHandleBuffer[*NumberOfChildren] = PciIoDevice->Handle;
- (*NumberOfChildren)++;
- }
-
- if (IS_PCI_BRIDGE (&PciIoDevice->Pci)) {
- Status = StartPciDevicesOnBridge (
- Controller,
- PciIoDevice,
- RemainingDevicePath,
- NumberOfChildren,
- ChildHandleBuffer
- );
-
- PciIoDevice->PciIo.Attributes (
- &(PciIoDevice->PciIo),
- EfiPciIoAttributeOperationSupported,
- 0,
- &Supports
- );
- Supports &= (UINT64)EFI_PCI_DEVICE_ENABLE;
- PciIoDevice->PciIo.Attributes (
- &(PciIoDevice->PciIo),
- EfiPciIoAttributeOperationEnable,
- Supports,
- NULL
- );
-
- }
-
- CurrentLink = CurrentLink->ForwardLink;
- }
- }
-
- if (PciIoDevice == NULL) {
- return EFI_NOT_FOUND;
- } else {
- return EFI_SUCCESS;
- }
-}
-
-/**
- Start to manage all the PCI devices it found previously under
- the entire host bridge.
-
- @param Controller The root bridge handle.
-
- @retval EFI_NOT_READY Device is not allocated.
- @retval EFI_SUCCESS Success to start Pci device on host bridge.
-
-**/
-EFI_STATUS
-StartPciDevices (
- IN EFI_HANDLE Controller
- )
-{
- PCI_IO_DEVICE *RootBridge;
- EFI_HANDLE ThisHostBridge;
- LIST_ENTRY *CurrentLink;
-
- RootBridge = GetRootBridgeByHandle (Controller);
- ASSERT (RootBridge != NULL);
- ThisHostBridge = RootBridge->PciRootBridgeIo->ParentHandle;
-
- CurrentLink = mPciDevicePool.ForwardLink;
-
- while (CurrentLink != NULL && CurrentLink != &mPciDevicePool) {
-
- RootBridge = PCI_IO_DEVICE_FROM_LINK (CurrentLink);
- //
- // Locate the right root bridge to start
- //
- if (RootBridge->PciRootBridgeIo->ParentHandle == ThisHostBridge) {
- StartPciDevicesOnBridge (
- RootBridge->Handle,
- RootBridge,
- NULL,
- NULL,
- NULL
- );
- }
-
- CurrentLink = CurrentLink->ForwardLink;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Create root bridge device.
-
- @param RootBridgeHandle Specified root bridge hanle.
-
- @return The crated root bridge device instance, NULL means no
- root bridge device instance created.
-
-**/
-PCI_IO_DEVICE *
-CreateRootBridge (
- IN EFI_HANDLE RootBridgeHandle
- )
-{
- EFI_STATUS Status;
- PCI_IO_DEVICE *Dev;
- EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
- EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
-
- Dev = AllocateZeroPool (sizeof (PCI_IO_DEVICE));
- if (Dev == NULL) {
- return NULL;
- }
-
- Dev->Signature = PCI_IO_DEVICE_SIGNATURE;
- Dev->Handle = RootBridgeHandle;
- InitializeListHead (&Dev->ChildList);
-
- Status = gBS->OpenProtocol (
- RootBridgeHandle,
- &gEfiDevicePathProtocolGuid,
- (VOID **) &ParentDevicePath,
- gPciBusDriverBinding.DriverBindingHandle,
- RootBridgeHandle,
- EFI_OPEN_PROTOCOL_GET_PROTOCOL
- );
-
- if (EFI_ERROR (Status)) {
- FreePool (Dev);
- return NULL;
- }
-
- //
- // Record the root bridge parent device path
- //
- Dev->DevicePath = DuplicateDevicePath (ParentDevicePath);
-
- //
- // Get the pci root bridge io protocol
- //
- Status = gBS->OpenProtocol (
- RootBridgeHandle,
- &gEfiPciRootBridgeIoProtocolGuid,
- (VOID **) &PciRootBridgeIo,
- gPciBusDriverBinding.DriverBindingHandle,
- RootBridgeHandle,
- EFI_OPEN_PROTOCOL_GET_PROTOCOL
- );
-
- if (EFI_ERROR (Status)) {
- FreePciDevice (Dev);
- return NULL;
- }
-
- Dev->PciRootBridgeIo = PciRootBridgeIo;
-
- //
- // Initialize the PCI I/O instance structure
- //
- InitializePciIoInstance (Dev);
- InitializePciDriverOverrideInstance (Dev);
- InitializePciLoadFile2 (Dev);
-
- //
- // Initialize reserved resource list and
- // option rom driver list
- //
- InitializeListHead (&Dev->ReservedResourceList);
- InitializeListHead (&Dev->OptionRomDriverList);
-
- return Dev;
-}
-
-/**
- Get root bridge device instance by specific root bridge handle.
-
- @param RootBridgeHandle Given root bridge handle.
-
- @return The root bridge device instance, NULL means no root bridge
- device instance found.
-
-**/
-PCI_IO_DEVICE *
-GetRootBridgeByHandle (
- EFI_HANDLE RootBridgeHandle
- )
-{
- PCI_IO_DEVICE *RootBridgeDev;
- LIST_ENTRY *CurrentLink;
-
- CurrentLink = mPciDevicePool.ForwardLink;
-
- while (CurrentLink != NULL && CurrentLink != &mPciDevicePool) {
-
- RootBridgeDev = PCI_IO_DEVICE_FROM_LINK (CurrentLink);
- if (RootBridgeDev->Handle == RootBridgeHandle) {
- return RootBridgeDev;
- }
-
- CurrentLink = CurrentLink->ForwardLink;
- }
-
- return NULL;
-}
-
-/**
- Judege whether Pci device existed.
-
- @param Bridge Parent bridege instance.
- @param PciIoDevice Device instance.
-
- @retval TRUE Pci device existed.
- @retval FALSE Pci device did not exist.
-
-**/
-BOOLEAN
-PciDeviceExisted (
- IN PCI_IO_DEVICE *Bridge,
- IN PCI_IO_DEVICE *PciIoDevice
- )
-{
-
- PCI_IO_DEVICE *Temp;
- LIST_ENTRY *CurrentLink;
-
- CurrentLink = Bridge->ChildList.ForwardLink;
-
- while (CurrentLink != NULL && CurrentLink != &Bridge->ChildList) {
-
- Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);
-
- if (Temp == PciIoDevice) {
- return TRUE;
- }
-
- if (!IsListEmpty (&Temp->ChildList)) {
- if (PciDeviceExisted (Temp, PciIoDevice)) {
- return TRUE;
- }
- }
-
- CurrentLink = CurrentLink->ForwardLink;
- }
-
- return FALSE;
-}
-
-/**
- Get the active VGA device on the same segment.
-
- @param VgaDevice PCI IO instance for the VGA device.
-
- @return The active VGA device on the same segment.
-
-**/
-PCI_IO_DEVICE *
-ActiveVGADeviceOnTheSameSegment (
- IN PCI_IO_DEVICE *VgaDevice
- )
-{
- LIST_ENTRY *CurrentLink;
- PCI_IO_DEVICE *Temp;
-
- CurrentLink = mPciDevicePool.ForwardLink;
-
- while (CurrentLink != NULL && CurrentLink != &mPciDevicePool) {
-
- Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);
-
- if (Temp->PciRootBridgeIo->SegmentNumber == VgaDevice->PciRootBridgeIo->SegmentNumber) {
-
- Temp = ActiveVGADeviceOnTheRootBridge (Temp);
-
- if (Temp != NULL) {
- return Temp;
- }
- }
-
- CurrentLink = CurrentLink->ForwardLink;
- }
-
- return NULL;
-}
-
-/**
- Get the active VGA device on the root bridge.
-
- @param RootBridge PCI IO instance for the root bridge.
-
- @return The active VGA device.
-
-**/
-PCI_IO_DEVICE *
-ActiveVGADeviceOnTheRootBridge (
- IN PCI_IO_DEVICE *RootBridge
- )
-{
- LIST_ENTRY *CurrentLink;
- PCI_IO_DEVICE *Temp;
-
- CurrentLink = RootBridge->ChildList.ForwardLink;
-
- while (CurrentLink != NULL && CurrentLink != &RootBridge->ChildList) {
-
- Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);
-
- if (IS_PCI_VGA(&Temp->Pci) &&
- (Temp->Attributes &
- (EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY |
- EFI_PCI_IO_ATTRIBUTE_VGA_IO |
- EFI_PCI_IO_ATTRIBUTE_VGA_IO_16)) != 0) {
- return Temp;
- }
-
- if (IS_PCI_BRIDGE (&Temp->Pci)) {
-
- Temp = ActiveVGADeviceOnTheRootBridge (Temp);
-
- if (Temp != NULL) {
- return Temp;
- }
- }
-
- CurrentLink = CurrentLink->ForwardLink;
- }
-
- return NULL;
-}
-
-
-/**
- Get HPC PCI address according to its device path.
-
- @param RootBridge Root bridege Io instance.
- @param RemainingDevicePath Given searching device path.
- @param PciAddress Buffer holding searched result.
-
- @retval EFI_SUCCESS PCI address was stored in PciAddress
- @retval EFI_NOT_FOUND Can not find the specific device path.
-
-**/
-EFI_STATUS
-GetHpcPciAddressFromRootBridge (
- IN PCI_IO_DEVICE *RootBridge,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath,
- OUT UINT64 *PciAddress
- )
-{
- EFI_DEV_PATH_PTR Node;
- PCI_IO_DEVICE *Temp;
- EFI_DEVICE_PATH_PROTOCOL *CurrentDevicePath;
- LIST_ENTRY *CurrentLink;
- BOOLEAN MisMatch;
-
- MisMatch = FALSE;
-
- CurrentDevicePath = RemainingDevicePath;
- Node.DevPath = CurrentDevicePath;
- Temp = NULL;
-
- while (!IsDevicePathEnd (CurrentDevicePath)) {
-
- CurrentLink = RootBridge->ChildList.ForwardLink;
- Node.DevPath = CurrentDevicePath;
-
- while (CurrentLink != NULL && CurrentLink != &RootBridge->ChildList) {
- Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);
-
- if (Node.Pci->Device == Temp->DeviceNumber &&
- Node.Pci->Function == Temp->FunctionNumber) {
- RootBridge = Temp;
- break;
- }
-
- CurrentLink = CurrentLink->ForwardLink;
- }
-
- //
- // Check if we find the bridge
- //
- if (CurrentLink == &RootBridge->ChildList) {
-
- MisMatch = TRUE;
- break;
-
- }
-
- CurrentDevicePath = NextDevicePathNode (CurrentDevicePath);
- }
-
- if (MisMatch) {
-
- CurrentDevicePath = NextDevicePathNode (CurrentDevicePath);
-
- if (IsDevicePathEnd (CurrentDevicePath)) {
- *PciAddress = EFI_PCI_ADDRESS (RootBridge->BusNumber, Node.Pci->Device, Node.Pci->Function, 0);
- return EFI_SUCCESS;
- }
-
- return EFI_NOT_FOUND;
- }
-
- if (Temp != NULL) {
- *PciAddress = EFI_PCI_ADDRESS (Temp->BusNumber, Temp->DeviceNumber, Temp->FunctionNumber, 0);
- } else {
- return EFI_NOT_FOUND;
- }
-
- return EFI_SUCCESS;
-
-}
-
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