Upload BSD-licensed Vlv2TbltDevicePkg and Vlv2DeviceRefCodePkg to
https://svn.code.sf.net/p/edk2/code/trunk/edk2/, which are for MinnowBoard MAX open source project. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: David Wei <david.wei@intel.com> Reviewed-by: Mike Wu <mike.wu@intel.com> Reviewed-by: Hot Tian <hot.tian@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16599 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
David Wei
zwei4
349
Vlv2TbltDevicePkg/Wpce791/LpcDriver.c
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349
Vlv2TbltDevicePkg/Wpce791/LpcDriver.c
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/** @file
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Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available under
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the terms and conditions of the BSD License that accompanies this distribution.
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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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LpcDriver.c
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Abstract:
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EFI Lpc Driver for a Generic PC Platform
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--*/
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#include "LpcDriver.h"
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#include "IndustryStandard/Pci22.h"
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//
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// This driver is for ACPI(PNP0A03,0)/PCI(0x1f,0)
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//
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//
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// Lpc Driver Global Variables
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//
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EFI_DRIVER_BINDING_PROTOCOL gLpcDriver = {
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LpcDriverSupported,
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LpcDriverStart,
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LpcDriverStop,
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0x10,
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NULL,
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NULL
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};
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LPC_DEV mLpc = {
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LPC_DEV_SIGNATURE,
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NULL,
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{
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IsaDeviceEnumerate,
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IsaDeviceSetPower,
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IsaGetCurrentResource,
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IsaGetPossibleResource,
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IsaSetResource,
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IsaEnableDevice,
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IsaInitDevice,
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LpcInterfaceInit
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},
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NULL
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};
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BOOLEAN InitExecuted = FALSE;
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/**
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the entry point of the Lpc driver
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**/
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EFI_STATUS
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EFIAPI
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LpcDriverEntryPoint(
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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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return EfiLibInstallDriverBinding (ImageHandle, SystemTable, &gLpcDriver, ImageHandle);
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}
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/**
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ControllerDriver Protocol Method
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**/
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EFI_STATUS
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EFIAPI
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LpcDriverSupported (
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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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EFI_STATUS Status;
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EFI_PCI_IO_PROTOCOL *PciIo;
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EFI_DEVICE_PATH_PROTOCOL *IsaBridgeDevicePath;
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ACPI_HID_DEVICE_PATH *AcpiNode;
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PCI_DEVICE_PATH *PciNode;
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PCI_TYPE00 Pci;
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//
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// Get the ISA bridge's Device Path and test it
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// the following code is specific
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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 **)&IsaBridgeDevicePath,
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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 (EFI_ERROR (Status)) {
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return Status;
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}
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Status = EFI_SUCCESS;
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AcpiNode = (ACPI_HID_DEVICE_PATH *)IsaBridgeDevicePath;
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if (AcpiNode->Header.Type != ACPI_DEVICE_PATH ||
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AcpiNode->Header.SubType != ACPI_DP ||
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DevicePathNodeLength (&AcpiNode->Header) != sizeof(ACPI_HID_DEVICE_PATH) ||
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AcpiNode -> HID != EISA_PNP_ID(0x0A03) ||
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AcpiNode -> UID != 0 ) {
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Status = EFI_UNSUPPORTED;
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} else {
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//
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// Get the next node
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//
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IsaBridgeDevicePath = NextDevicePathNode (IsaBridgeDevicePath);
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PciNode = (PCI_DEVICE_PATH *)IsaBridgeDevicePath;
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if (PciNode->Header.Type != HARDWARE_DEVICE_PATH ||
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PciNode->Header.SubType != HW_PCI_DP ||
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DevicePathNodeLength (&PciNode->Header) != sizeof (PCI_DEVICE_PATH) ||
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PciNode -> Function != 0x00 ||
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PciNode -> Device != 0x1f ) {
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Status = EFI_UNSUPPORTED;
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}
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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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if (EFI_ERROR (Status)) {
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return EFI_UNSUPPORTED;
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}
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//
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// Get PciIo protocol instance
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//
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Status = gBS->OpenProtocol (
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Controller,
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&gEfiPciIoProtocolGuid,
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(VOID **)&PciIo,
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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 (EFI_ERROR(Status)) {
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return Status;
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}
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Status = PciIo->Pci.Read (
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PciIo,
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EfiPciIoWidthUint32,
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0,
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sizeof(Pci) / sizeof(UINT32),
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&Pci
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);
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if (!EFI_ERROR (Status)) {
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Status = EFI_SUCCESS; //TODO: force return success as temp solution EFI_UNSUPPORTED;
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if ((Pci.Hdr.Command & 0x03) == 0x03) {
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if (Pci.Hdr.ClassCode[2] == PCI_CLASS_BRIDGE) {
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//
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// See if this is a standard PCI to ISA Bridge from the Base Code
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// and Class Code
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//
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if (Pci.Hdr.ClassCode[1] == PCI_CLASS_BRIDGE_ISA) {
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Status = EFI_SUCCESS;
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} else {
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}
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//
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// See if this is an Intel PCI to ISA bridge in Positive Decode Mode
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//
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if (Pci.Hdr.ClassCode[1] == PCI_CLASS_BRIDGE_ISA_PDECODE &&
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Pci.Hdr.VendorId == 0x8086 &&
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Pci.Hdr.DeviceId == 0x7110) {
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Status = EFI_SUCCESS;
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} else {
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}
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} else {
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}
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}
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else {
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}
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}
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gBS->CloseProtocol (
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Controller,
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&gEfiPciIoProtocolGuid,
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This->DriverBindingHandle,
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Controller
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);
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return Status;
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}
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/**
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Install EFI_ISA_ACPI_PROTOCOL
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**/
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EFI_STATUS
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EFIAPI
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LpcDriverStart (
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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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EFI_STATUS Status;
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EFI_PCI_IO_PROTOCOL *PciIo;
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LPC_DEV *LpcDev;
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LpcDev = NULL;
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//
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// Get Pci IO
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//
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Status = gBS->OpenProtocol (
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Controller,
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&gEfiPciIoProtocolGuid,
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(VOID **)&PciIo,
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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 (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {
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return Status;
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}
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mLpc.PciIo = PciIo;
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//
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// Install IsaAcpi interface, the Sio interface is not installed!
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//
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Status = gBS->InstallMultipleProtocolInterfaces (
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&Controller,
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&gEfiIsaAcpiProtocolGuid,
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&mLpc.IsaAcpi,
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NULL
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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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LpcDriverStop (
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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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EFI_STATUS Status;
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EFI_ISA_ACPI_PROTOCOL *IsaAcpi;
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LPC_DEV *LpcDev;
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//
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// Get EFI_ISA_ACPI_PROTOCOL interface
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//
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Status = gBS->OpenProtocol (
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Controller,
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&gEfiIsaAcpiProtocolGuid,
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(VOID **)&IsaAcpi,
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This->DriverBindingHandle,
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Controller,
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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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return Status;
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}
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LpcDev = LPC_ISA_ACPI_FROM_THIS (IsaAcpi);
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//
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// Uninstall protocol interface: EFI_ISA_ACPI_PROTOCOL
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//
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Status = gBS->UninstallProtocolInterface (
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Controller,
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&gEfiIsaAcpiProtocolGuid,
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&LpcDev->IsaAcpi
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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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&gEfiPciIoProtocolGuid,
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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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VOID
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LpcIoRead8 (
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IN UINT16 Port,
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OUT UINT8 *Data
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)
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{
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mLpc.PciIo->Io.Read(
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mLpc.PciIo,
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EfiPciWidthUint8,
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EFI_PCI_IO_PASS_THROUGH_BAR,
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Port,
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1,
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Data
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);
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}
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VOID
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LpcIoWrite8 (
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IN UINT16 Port,
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IN UINT8 Data
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)
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{
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mLpc.PciIo->Io.Write(
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