Unix version of EFI emulator
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2182 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
tgingold
296
EdkUnixPkg/Dxe/UnixThunk/Bus/Uga/UnixUgaDriver.c
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296
EdkUnixPkg/Dxe/UnixThunk/Bus/Uga/UnixUgaDriver.c
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/*++
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Copyright (c) 2006, 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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UnixUgaDriver.c
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Abstract:
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This file implements the EFI 1.1 Device Driver model requirements for UGA
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UGA is short hand for Universal Graphics Abstraction protocol.
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This file is a verision of UgaIo the uses UnixThunk system calls as an IO
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abstraction. For a PCI device UnixIo would be replaced with
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a PCI IO abstraction that abstracted a specific PCI device.
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--*/
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#include "UnixUga.h"
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EFI_DRIVER_BINDING_PROTOCOL gUnixUgaDriverBinding = {
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UnixUgaDriverBindingSupported,
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UnixUgaDriverBindingStart,
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UnixUgaDriverBindingStop,
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0x10,
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NULL,
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NULL
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};
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EFI_STATUS
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EFIAPI
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UnixUgaDriverBindingSupported (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Handle,
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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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Arguments:
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Returns:
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None
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--*/
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// TODO: This - add argument and description to function comment
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// TODO: Handle - add argument and description to function comment
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// TODO: RemainingDevicePath - add argument and description to function comment
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{
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EFI_STATUS Status;
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EFI_UNIX_IO_PROTOCOL *UnixIo;
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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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Handle,
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&gEfiUnixIoProtocolGuid,
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(VOID **)&UnixIo,
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This->DriverBindingHandle,
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Handle,
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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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return Status;
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}
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Status = UnixUgaSupported (UnixIo);
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//
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// Close the I/O Abstraction(s) used to perform the supported test
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//
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gBS->CloseProtocol (
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Handle,
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&gEfiUnixIoProtocolGuid,
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This->DriverBindingHandle,
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Handle
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);
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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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UnixUgaDriverBindingStart (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Handle,
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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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Arguments:
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Returns:
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None
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--*/
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// TODO: This - add argument and description to function comment
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// TODO: Handle - 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_UNIX_IO_PROTOCOL *UnixIo;
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EFI_STATUS Status;
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UGA_PRIVATE_DATA *Private;
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//
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// Grab the protocols we need
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//
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Status = gBS->OpenProtocol (
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Handle,
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&gEfiUnixIoProtocolGuid,
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(VOID **)&UnixIo,
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This->DriverBindingHandle,
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Handle,
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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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return EFI_UNSUPPORTED;
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}
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//
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// Allocate Private context data for SGO inteface.
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//
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Private = NULL;
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Status = gBS->AllocatePool (
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EfiBootServicesData,
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sizeof (UGA_PRIVATE_DATA),
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(VOID **)&Private
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);
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if (EFI_ERROR (Status)) {
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goto Done;
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}
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//
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// Set up context record
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//
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Private->Signature = UGA_PRIVATE_DATA_SIGNATURE;
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Private->Handle = Handle;
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Private->UnixThunk = UnixIo->UnixThunk;
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Private->ControllerNameTable = NULL;
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AddUnicodeString (
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"eng",
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gUnixUgaComponentName.SupportedLanguages,
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&Private->ControllerNameTable,
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UnixIo->EnvString
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);
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Private->WindowName = UnixIo->EnvString;
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Status = UnixUgaConstructor (Private);
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if (EFI_ERROR (Status)) {
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goto Done;
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}
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//
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// Publish the Uga interface to the world
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//
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Status = gBS->InstallMultipleProtocolInterfaces (
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&Private->Handle,
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&gEfiUgaDrawProtocolGuid,
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&Private->UgaDraw,
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&gEfiSimpleTextInProtocolGuid,
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&Private->SimpleTextIn,
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NULL
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);
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Done:
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if (EFI_ERROR (Status)) {
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gBS->CloseProtocol (
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Handle,
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&gEfiUnixIoProtocolGuid,
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This->DriverBindingHandle,
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Handle
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);
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if (Private != NULL) {
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//
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// On Error Free back private data
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//
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if (Private->ControllerNameTable != NULL) {
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FreeUnicodeStringTable (Private->ControllerNameTable);
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}
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gBS->FreePool (Private);
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}
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}
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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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UnixUgaDriverBindingStop (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Handle,
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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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Arguments:
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Returns:
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None
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--*/
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// TODO: This - add argument and description to function comment
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// TODO: Handle - 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_NOT_STARTED - add return value to function comment
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// TODO: EFI_DEVICE_ERROR - add return value to function comment
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{
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EFI_UGA_DRAW_PROTOCOL *UgaDraw;
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EFI_STATUS Status;
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UGA_PRIVATE_DATA *Private;
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Status = gBS->OpenProtocol (
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Handle,
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&gEfiUgaDrawProtocolGuid,
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(VOID **)&UgaDraw,
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This->DriverBindingHandle,
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Handle,
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EFI_OPEN_PROTOCOL_GET_PROTOCOL
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);
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if (EFI_ERROR (Status)) {
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//
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// If the UGA interface does not exist the driver is not started
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//
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return EFI_NOT_STARTED;
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}
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//
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// Get our private context information
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//
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Private = UGA_DRAW_PRIVATE_DATA_FROM_THIS (UgaDraw);
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//
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// Remove the SGO interface from the system
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//
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Status = gBS->UninstallMultipleProtocolInterfaces (
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Private->Handle,
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&gEfiUgaDrawProtocolGuid,
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&Private->UgaDraw,
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&gEfiSimpleTextInProtocolGuid,
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&Private->SimpleTextIn,
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NULL
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);
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if (!EFI_ERROR (Status)) {
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//
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// Shutdown the hardware
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//
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Status = UnixUgaDestructor (Private);
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if (EFI_ERROR (Status)) {
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return EFI_DEVICE_ERROR;
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}
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gBS->CloseProtocol (
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Handle,
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&gEfiUnixIoProtocolGuid,
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This->DriverBindingHandle,
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Handle
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);
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//
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// Free our instance data
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//
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FreeUnicodeStringTable (Private->ControllerNameTable);
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gBS->FreePool (Private);
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}
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return Status;
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}
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