mirror of https://github.com/acidanthera/audk.git
290 lines
8.7 KiB
C
290 lines
8.7 KiB
C
/*++
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Copyright (c) 2004 - 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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EfiDriverModelLib.c
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Abstract:
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Light weight lib to support EFI drivers.
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--*/
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#include "Tiano.h"
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#include "EfiDriverLib.h"
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EFI_STATUS
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EfiLibInstallDriverBinding (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable,
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IN EFI_DRIVER_BINDING_PROTOCOL *DriverBinding,
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IN EFI_HANDLE DriverBindingHandle
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)
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/*++
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Routine Description:
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Intialize a driver by installing the Driver Binding Protocol onto the
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driver's DriverBindingHandle. This is typically the same as the driver's
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ImageHandle, but it can be different if the driver produces multiple
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DriverBinding Protocols. This function also initializes the EFI Driver
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Library that initializes the global variables gST, gBS, gRT.
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Arguments:
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ImageHandle - The image handle of the driver
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SystemTable - The EFI System Table that was passed to the driver's entry point
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DriverBinding - A Driver Binding Protocol instance that this driver is producing
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DriverBindingHandle - The handle that DriverBinding is to be installe onto. If this
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parameter is NULL, then a new handle is created.
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Returns:
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EFI_SUCCESS is DriverBinding is installed onto DriverBindingHandle
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Otherwise, then return status from gBS->InstallProtocolInterface()
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--*/
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{
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EfiInitializeDriverLib (ImageHandle, SystemTable);
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DriverBinding->ImageHandle = ImageHandle;
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DriverBinding->DriverBindingHandle = DriverBindingHandle;
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return gBS->InstallProtocolInterface (
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&DriverBinding->DriverBindingHandle,
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&gEfiDriverBindingProtocolGuid,
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EFI_NATIVE_INTERFACE,
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DriverBinding
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);
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}
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EFI_STATUS
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EfiLibInstallAllDriverProtocols (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE * SystemTable,
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IN EFI_DRIVER_BINDING_PROTOCOL * DriverBinding,
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IN EFI_HANDLE DriverBindingHandle,
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#if (EFI_SPECIFICATION_VERSION >= 0x00020000)
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IN EFI_COMPONENT_NAME2_PROTOCOL * ComponentName, OPTIONAL
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#else
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IN EFI_COMPONENT_NAME_PROTOCOL * ComponentName, OPTIONAL
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#endif
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IN EFI_DRIVER_CONFIGURATION_PROTOCOL * DriverConfiguration, OPTIONAL
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IN EFI_DRIVER_DIAGNOSTICS_PROTOCOL * DriverDiagnostics OPTIONAL
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)
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/*++
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Routine Description:
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Intialize a driver by installing the Driver Binding Protocol onto the
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driver's DriverBindingHandle. This is typically the same as the driver's
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ImageHandle, but it can be different if the driver produces multiple
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DriverBinding Protocols. This function also initializes the EFI Driver
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Library that initializes the global variables gST, gBS, gRT.
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Arguments:
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ImageHandle - The image handle of the driver
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SystemTable - The EFI System Table that was passed to the driver's entry point
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DriverBinding - A Driver Binding Protocol instance that this driver is producing
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DriverBindingHandle - The handle that DriverBinding is to be installe onto. If this
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parameter is NULL, then a new handle is created.
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ComponentName - A Component Name Protocol instance that this driver is producing
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DriverConfiguration - A Driver Configuration Protocol instance that this driver is producing
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DriverDiagnostics - A Driver Diagnostics Protocol instance that this driver is producing
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Returns:
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EFI_SUCCESS if all the protocols were installed onto DriverBindingHandle
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Otherwise, then return status from gBS->InstallProtocolInterface()
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--*/
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{
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EFI_STATUS Status;
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Status = EfiLibInstallDriverBinding (ImageHandle, SystemTable, DriverBinding, DriverBindingHandle);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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if (ComponentName != NULL) {
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Status = gBS->InstallProtocolInterface (
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&DriverBinding->DriverBindingHandle,
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#if (EFI_SPECIFICATION_VERSION >= 0x00020000)
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&gEfiComponentName2ProtocolGuid,
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#else
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&gEfiComponentNameProtocolGuid,
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#endif
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EFI_NATIVE_INTERFACE,
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ComponentName
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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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}
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if (DriverConfiguration != NULL) {
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Status = gBS->InstallProtocolInterface (
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&DriverBinding->DriverBindingHandle,
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&gEfiDriverConfigurationProtocolGuid,
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EFI_NATIVE_INTERFACE,
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DriverConfiguration
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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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}
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if (DriverDiagnostics != NULL) {
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Status = gBS->InstallProtocolInterface (
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&DriverBinding->DriverBindingHandle,
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&gEfiDriverDiagnosticsProtocolGuid,
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EFI_NATIVE_INTERFACE,
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DriverDiagnostics
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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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}
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return EFI_SUCCESS;
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}
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EFI_STATUS
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EfiLibTestManagedDevice (
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IN EFI_HANDLE ControllerHandle,
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IN EFI_HANDLE DriverBindingHandle,
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IN EFI_GUID *ManagedProtocolGuid
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)
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/*++
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Routine Description:
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Test to see if the controller is managed by a specific driver.
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Arguments:
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ControllerHandle - Handle for controller to test
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DriverBindingHandle - Driver binding handle for controller
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ManagedProtocolGuid - The protocol guid the driver opens on controller
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Returns:
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EFI_SUCCESS - The controller is managed by the driver
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EFI_UNSUPPORTED - The controller is not managed by the driver
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--*/
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{
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EFI_STATUS Status;
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VOID *ManagedInterface;
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Status = gBS->OpenProtocol (
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ControllerHandle,
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ManagedProtocolGuid,
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&ManagedInterface,
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DriverBindingHandle,
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ControllerHandle,
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EFI_OPEN_PROTOCOL_BY_DRIVER
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);
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if (!EFI_ERROR (Status)) {
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gBS->CloseProtocol (
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ControllerHandle,
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ManagedProtocolGuid,
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DriverBindingHandle,
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ControllerHandle
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);
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return EFI_UNSUPPORTED;
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}
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if (Status != EFI_ALREADY_STARTED) {
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return EFI_UNSUPPORTED;
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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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EfiLibTestChildHandle (
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IN EFI_HANDLE ControllerHandle,
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IN EFI_HANDLE ChildHandle,
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IN EFI_GUID *ConsumedGuid
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)
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/*++
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Routine Description:
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Test to see if the child handle is the child of the controller
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Arguments:
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ControllerHandle - Handle for controller (parent)
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ChildHandle - Child handle to test
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ConsumsedGuid - Protocol guid consumed by child from controller
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Returns:
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EFI_SUCCESS - The child handle is the child of the controller
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EFI_UNSUPPORTED - The child handle is not the child of the controller
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--*/
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{
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EFI_STATUS Status;
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EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenInfoBuffer;
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UINTN EntryCount;
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UINTN Index;
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//
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// Retrieve the list of agents that are consuming one of the protocols
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// on ControllerHandle that the children consume
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//
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Status = gBS->OpenProtocolInformation (
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ControllerHandle,
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ConsumedGuid,
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&OpenInfoBuffer,
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&EntryCount
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);
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if (EFI_ERROR (Status)) {
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return EFI_UNSUPPORTED;
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}
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//
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// See if one of the agents is ChildHandle
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//
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Status = EFI_UNSUPPORTED;
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for (Index = 0; Index < EntryCount; Index++) {
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if (OpenInfoBuffer[Index].ControllerHandle == ChildHandle &&
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OpenInfoBuffer[Index].Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) {
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Status = EFI_SUCCESS;
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}
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}
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gBS->FreePool (OpenInfoBuffer);
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return Status;
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}
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