+++ /dev/null
-/*++
-
-Copyright (c) 2005 - 2006, 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.
-
-Module Name:
-
- PciBus.c
-
-Abstract:
-
- PCI Bus Driver
-
-Revision History
-
---*/
-
-#include "PciBus.h"
-
-//
-// PCI Bus Support Function Prototypes
-//
-
-EFI_STATUS
-EFIAPI
-PciBusEntryPoint (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- );
-
-EFI_STATUS
-EFIAPI
-PciBusDriverBindingSupported (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE Controller,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
- );
-
-EFI_STATUS
-EFIAPI
-PciBusDriverBindingStart (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE Controller,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
- );
-
-EFI_STATUS
-EFIAPI
-PciBusDriverBindingStop (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE Controller,
- IN UINTN NumberOfChildren,
- IN EFI_HANDLE *ChildHandleBuffer
- );
-
-
-//
-// PCI Bus Driver Global Variables
-//
-
-EFI_DRIVER_BINDING_PROTOCOL gPciBusDriverBinding = {
- PciBusDriverBindingSupported,
- PciBusDriverBindingStart,
- PciBusDriverBindingStop,
- 0xa,
- NULL,
- NULL
-};
-
-BOOLEAN gFullEnumeration;
-
-UINT64 gAllOne = 0xFFFFFFFFFFFFFFFFULL;
-UINT64 gAllZero = 0;
-
-//
-// PCI Bus Driver Support Functions
-//
-EFI_STATUS
-EFIAPI
-PciBusEntryPoint (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- )
-/*++
-
-Routine Description:
-
- Initialize the global variables
- publish the driver binding protocol
-
-Arguments:
-
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
-
-Returns:
-
- EFI_SUCCESS
- EFI_DEVICE_ERROR
-
---*/
-{
- EFI_STATUS Status;
-
- //
- // Initialize the EFI Driver Library
- //
- Status = EfiLibInstallDriverBindingComponentName2 (
- ImageHandle,
- SystemTable,
- &gPciBusDriverBinding,
- ImageHandle,
- &gPciBusComponentName,
- &gPciBusComponentName2
- );
- ASSERT_EFI_ERROR (Status);
-
- InitializePciDevicePool ();
-
- gFullEnumeration = TRUE;
-
- return Status;
-}
-
-EFI_STATUS
-EFIAPI
-PciBusDriverBindingSupported (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE Controller,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
- )
-/*++
-
-Routine Description:
-
- Check to see if pci bus driver supports the given controller
-
-Arguments:
-
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE Controller,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
-
-Returns:
-
- EFI_SUCCESS
-
---*/
-{
- EFI_STATUS Status;
- EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
- EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
- EFI_DEV_PATH_PTR Node;
-
- if (RemainingDevicePath != NULL) {
- Node.DevPath = RemainingDevicePath;
- if (Node.DevPath->Type != HARDWARE_DEVICE_PATH ||
- Node.DevPath->SubType != HW_PCI_DP ||
- DevicePathNodeLength(Node.DevPath) != sizeof(PCI_DEVICE_PATH)) {
- return EFI_UNSUPPORTED;
- }
- }
- //
- // Open the IO Abstraction(s) needed to perform the supported test
- //
- Status = gBS->OpenProtocol (
- Controller,
- &gEfiDevicePathProtocolGuid,
- (VOID **) &ParentDevicePath,
- This->DriverBindingHandle,
- Controller,
- EFI_OPEN_PROTOCOL_BY_DRIVER
- );
- if (Status == EFI_ALREADY_STARTED) {
- return EFI_SUCCESS;
- }
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- gBS->CloseProtocol (
- Controller,
- &gEfiDevicePathProtocolGuid,
- This->DriverBindingHandle,
- Controller
- );
-
- Status = gBS->OpenProtocol (
- Controller,
- &gEfiPciRootBridgeIoProtocolGuid,
- (VOID **) &PciRootBridgeIo,
- This->DriverBindingHandle,
- Controller,
- EFI_OPEN_PROTOCOL_BY_DRIVER
- );
- if (Status == EFI_ALREADY_STARTED) {
- return EFI_SUCCESS;
- }
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- gBS->CloseProtocol (
- Controller,
- &gEfiPciRootBridgeIoProtocolGuid,
- This->DriverBindingHandle,
- Controller
- );
-
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-EFIAPI
-PciBusDriverBindingStart (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE Controller,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
- )
-/*++
-
-Routine Description:
-
- Start to management the controller passed in
-
-Arguments:
-
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE Controller,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
-
-Returns:
-
-
---*/
-{
- EFI_STATUS Status;
-
- //
- // Enumerate the entire host bridge
- // After enumeration, a database that records all the device information will be created
- //
- //
- Status = PciEnumerator (Controller);
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Enable PCI device specified by remaining device path. BDS or other driver can call the
- // start more than once.
- //
-
- StartPciDevices (Controller, RemainingDevicePath);
-
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-EFIAPI
-PciBusDriverBindingStop (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE Controller,
- IN UINTN NumberOfChildren,
- IN EFI_HANDLE *ChildHandleBuffer
- )
-/*++
-
-Routine Description:
-
- Stop one or more children created at start of pci bus driver
- if all the the children get closed, close the protocol
-
-Arguments:
-
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE Controller,
- IN UINTN NumberOfChildren,
- IN EFI_HANDLE *ChildHandleBuffer
-
-Returns:
-
-
---*/
-{
- EFI_STATUS Status;
- UINTN Index;
- BOOLEAN AllChildrenStopped;
-
- if (NumberOfChildren == 0) {
- //
- // Close the bus driver
- //
- gBS->CloseProtocol (
- Controller,
- &gEfiDevicePathProtocolGuid,
- This->DriverBindingHandle,
- Controller
- );
- gBS->CloseProtocol (
- Controller,
- &gEfiPciRootBridgeIoProtocolGuid,
- This->DriverBindingHandle,
- Controller
- );
-
- DestroyRootBridgeByHandle (
- Controller
- );
-
- return EFI_SUCCESS;
- }
-
- //
- // Stop all the children
- //
-
- AllChildrenStopped = TRUE;
-
- for (Index = 0; Index < NumberOfChildren; Index++) {
-
- //
- // De register all the pci device
- //
- Status = DeRegisterPciDevice (Controller, ChildHandleBuffer[Index]);
-
- if (EFI_ERROR (Status)) {
- AllChildrenStopped = FALSE;
- }
- }
-
- if (!AllChildrenStopped) {
- return EFI_DEVICE_ERROR;
- }
-
- return EFI_SUCCESS;
-}
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