Add PciBus & IdeBus
PciBus cannot build for now for some definition missing. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2852 6f19259b-4bc3-4df7-8a09-765794883524
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qhuang8
347
IntelFrameworkModulePkg/Bus/Pci/PciBus/Dxe/pcibus.c
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347
IntelFrameworkModulePkg/Bus/Pci/PciBus/Dxe/pcibus.c
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/*++
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Copyright (c) 2006 - 2007, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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PciBus.c
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Abstract:
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PCI Bus Driver
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Revision History
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--*/
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#include "pcibus.h"
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//
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// PCI Bus Driver Global Variables
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//
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EFI_DRIVER_BINDING_PROTOCOL gPciBusDriverBinding = {
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PciBusDriverBindingSupported,
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PciBusDriverBindingStart,
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PciBusDriverBindingStop,
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0xa,
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NULL,
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NULL
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};
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EFI_HANDLE gPciHostBrigeHandles[PCI_MAX_HOST_BRIDGE_NUM];
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UINTN gPciHostBridgeNumber;
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BOOLEAN gFullEnumeration;
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UINT64 gAllOne = 0xFFFFFFFFFFFFFFFFULL;
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UINT64 gAllZero = 0;
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EFI_PCI_PLATFORM_PROTOCOL *gPciPlatformProtocol;
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//
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// PCI Bus Driver Support Functions
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//
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EFI_STATUS
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EFIAPI
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PciBusEntryPoint (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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/*++
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Routine Description:
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Initialize the global variables
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publish the driver binding protocol
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Arguments:
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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Returns:
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EFI_SUCCESS
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EFI_DEVICE_ERROR
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--*/
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// TODO: ImageHandle - add argument and description to function comment
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// TODO: SystemTable - add argument and description to function comment
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{
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EFI_STATUS Status;
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InitializePciDevicePool ();
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gFullEnumeration = TRUE;
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gPciHostBridgeNumber = 0;
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//
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// Install driver model protocol(s).
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//
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Status = EfiLibInstallAllDriverProtocols (
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ImageHandle,
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SystemTable,
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&gPciBusDriverBinding,
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ImageHandle,
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&gPciBusComponentName,
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NULL,
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NULL
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);
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ASSERT_EFI_ERROR (Status);
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InstallHotPlugRequestProtocol (&Status);
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return Status;
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}
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EFI_STATUS
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EFIAPI
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PciBusDriverBindingSupported (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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)
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/*++
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Routine Description:
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Check to see if pci bus driver supports the given controller
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Arguments:
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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Returns:
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EFI_SUCCESS
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--*/
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// TODO: This - add argument and description to function comment
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// TODO: Controller - add argument and description to function comment
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// TODO: RemainingDevicePath - add argument and description to function comment
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// TODO: EFI_UNSUPPORTED - add return value to function comment
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{
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EFI_STATUS Status;
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EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
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EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
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EFI_DEV_PATH_PTR Node;
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if (RemainingDevicePath != NULL) {
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Node.DevPath = RemainingDevicePath;
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if (Node.DevPath->Type != HARDWARE_DEVICE_PATH ||
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Node.DevPath->SubType != HW_PCI_DP ||
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DevicePathNodeLength(Node.DevPath) != sizeof(PCI_DEVICE_PATH)) {
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return EFI_UNSUPPORTED;
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}
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}
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//
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// Open the IO Abstraction(s) needed to perform the supported test
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//
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Status = gBS->OpenProtocol (
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Controller,
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&gEfiDevicePathProtocolGuid,
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(VOID **) &ParentDevicePath,
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This->DriverBindingHandle,
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Controller,
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EFI_OPEN_PROTOCOL_BY_DRIVER
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);
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if (Status == EFI_ALREADY_STARTED) {
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return EFI_SUCCESS;
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}
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if (EFI_ERROR (Status)) {
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return Status;
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}
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gBS->CloseProtocol (
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Controller,
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&gEfiDevicePathProtocolGuid,
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This->DriverBindingHandle,
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Controller
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);
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Status = gBS->OpenProtocol (
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Controller,
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&gEfiPciRootBridgeIoProtocolGuid,
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(VOID **) &PciRootBridgeIo,
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This->DriverBindingHandle,
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Controller,
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EFI_OPEN_PROTOCOL_BY_DRIVER
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);
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if (Status == EFI_ALREADY_STARTED) {
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return EFI_SUCCESS;
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}
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if (EFI_ERROR (Status)) {
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return Status;
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}
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gBS->CloseProtocol (
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Controller,
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&gEfiPciRootBridgeIoProtocolGuid,
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This->DriverBindingHandle,
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Controller
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);
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return EFI_SUCCESS;
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}
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EFI_STATUS
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EFIAPI
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PciBusDriverBindingStart (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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)
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/*++
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Routine Description:
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Start to management the controller passed in
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Arguments:
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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Returns:
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--*/
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// TODO: This - add argument and description to function comment
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// TODO: Controller - add argument and description to function comment
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// TODO: RemainingDevicePath - add argument and description to function comment
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// TODO: EFI_SUCCESS - add return value to function comment
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{
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EFI_STATUS Status;
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//
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// If PCI Platform protocol is available, get it now.
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// If the platform implements this, it must be installed before BDS phase
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//
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gPciPlatformProtocol = NULL;
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gBS->LocateProtocol (
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&gEfiPciPlatformProtocolGuid,
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NULL,
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(VOID **) &gPciPlatformProtocol
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);
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gFullEnumeration = (BOOLEAN) ((SearchHostBridgeHandle (Controller) ? FALSE : TRUE));
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//
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// Enumerate the entire host bridge
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// After enumeration, a database that records all the device information will be created
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//
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//
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Status = PciEnumerator (Controller);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Enable PCI device specified by remaining device path. BDS or other driver can call the
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// start more than once.
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//
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StartPciDevices (Controller, RemainingDevicePath);
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return EFI_SUCCESS;
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}
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EFI_STATUS
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EFIAPI
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PciBusDriverBindingStop (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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IN UINTN NumberOfChildren,
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IN EFI_HANDLE *ChildHandleBuffer
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)
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/*++
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Routine Description:
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Stop one or more children created at start of pci bus driver
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if all the the children get closed, close the protocol
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Arguments:
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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IN UINTN NumberOfChildren,
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IN EFI_HANDLE *ChildHandleBuffer
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Returns:
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--*/
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// TODO: This - add argument and description to function comment
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// TODO: Controller - add argument and description to function comment
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// TODO: NumberOfChildren - add argument and description to function comment
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// TODO: ChildHandleBuffer - add argument and description to function comment
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// TODO: EFI_SUCCESS - add return value to function comment
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// TODO: EFI_DEVICE_ERROR - add return value to function comment
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// TODO: EFI_SUCCESS - add return value to function comment
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{
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EFI_STATUS Status;
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UINTN Index;
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BOOLEAN AllChildrenStopped;
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if (NumberOfChildren == 0) {
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//
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// Close the bus driver
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//
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gBS->CloseProtocol (
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Controller,
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&gEfiDevicePathProtocolGuid,
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This->DriverBindingHandle,
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Controller
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);
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gBS->CloseProtocol (
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Controller,
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&gEfiPciRootBridgeIoProtocolGuid,
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This->DriverBindingHandle,
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Controller
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);
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DestroyRootBridgeByHandle (
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Controller
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);
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return EFI_SUCCESS;
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}
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//
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// Stop all the children
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//
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AllChildrenStopped = TRUE;
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for (Index = 0; Index < NumberOfChildren; Index++) {
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//
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// De register all the pci device
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//
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Status = DeRegisterPciDevice (Controller, ChildHandleBuffer[Index]);
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if (EFI_ERROR (Status)) {
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AllChildrenStopped = FALSE;
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}
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}
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if (!AllChildrenStopped) {
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return EFI_DEVICE_ERROR;
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}
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return EFI_SUCCESS;
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}
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