diff options
Diffstat (limited to 'BraswellPlatformPkg/Common/Silicon/WinbondSio/Wpce791/LpcDriver.c')
| -rw-r--r-- | BraswellPlatformPkg/Common/Silicon/WinbondSio/Wpce791/LpcDriver.c | 333 |
1 files changed, 333 insertions, 0 deletions
diff --git a/BraswellPlatformPkg/Common/Silicon/WinbondSio/Wpce791/LpcDriver.c b/BraswellPlatformPkg/Common/Silicon/WinbondSio/Wpce791/LpcDriver.c new file mode 100644 index 0000000000..2722524b6c --- /dev/null +++ b/BraswellPlatformPkg/Common/Silicon/WinbondSio/Wpce791/LpcDriver.c @@ -0,0 +1,333 @@ +/** @file
+ EFI Lpc Driver for a Generic PC Platform.
+
+ Copyright (c) 2004 - 2015, 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.
+
+**/
+
+#include "LpcDriver.h"
+#include "IndustryStandard/Pci22.h"
+
+//
+// This driver is for ACPI(PNP0A03,0)/PCI(0x1f,0)
+//
+
+//
+// Lpc Driver Global Variables
+//
+
+EFI_DRIVER_BINDING_PROTOCOL gLpcDriver = {
+ LpcDriverSupported,
+ LpcDriverStart,
+ LpcDriverStop,
+ 0x10,
+ NULL,
+ NULL
+};
+
+LPC_DEV mLpc = {
+ LPC_DEV_SIGNATURE,
+ NULL,
+ {
+ IsaDeviceEnumerate,
+ IsaDeviceSetPower,
+ IsaGetCurrentResource,
+ IsaGetPossibleResource,
+ IsaSetResource,
+ IsaEnableDevice,
+ IsaInitDevice,
+ LpcInterfaceInit
+ },
+ NULL
+};
+
+BOOLEAN InitExecuted = FALSE;
+
+/**
+ The entry point of the Lpc driver.
+
+**/
+EFI_STATUS
+EFIAPI
+LpcDriverEntryPoint (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ return EfiLibInstallDriverBinding (ImageHandle, SystemTable, &gLpcDriver, ImageHandle);
+}
+
+/**
+ ControllerDriver Protocol Method.
+
+**/
+EFI_STATUS
+EFIAPI
+LpcDriverSupported (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ )
+{
+ EFI_STATUS Status;
+ EFI_PCI_IO_PROTOCOL *PciIo;
+ EFI_DEVICE_PATH_PROTOCOL *IsaBridgeDevicePath;
+ ACPI_HID_DEVICE_PATH *AcpiNode;
+ PCI_DEVICE_PATH *PciNode;
+ PCI_TYPE00 Pci;
+
+ //
+ // Get the ISA bridge's Device Path and test it
+ // the following code is specific
+ //
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiDevicePathProtocolGuid,
+ (VOID **) &IsaBridgeDevicePath,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Status = EFI_SUCCESS;
+ AcpiNode = (ACPI_HID_DEVICE_PATH *) IsaBridgeDevicePath;
+ if (AcpiNode->Header.Type != ACPI_DEVICE_PATH ||
+ AcpiNode->Header.SubType != ACPI_DP ||
+ DevicePathNodeLength (&AcpiNode->Header) != sizeof (ACPI_HID_DEVICE_PATH) ||
+ AcpiNode -> HID != EISA_PNP_ID(0x0A03) ||
+ AcpiNode -> UID != 0 ) {
+ Status = EFI_UNSUPPORTED;
+ } else {
+ //
+ // Get the next node
+ //
+ IsaBridgeDevicePath = NextDevicePathNode (IsaBridgeDevicePath);
+ PciNode = (PCI_DEVICE_PATH *) IsaBridgeDevicePath;
+ if (PciNode->Header.Type != HARDWARE_DEVICE_PATH ||
+ PciNode->Header.SubType != HW_PCI_DP ||
+ DevicePathNodeLength (&PciNode->Header) != sizeof (PCI_DEVICE_PATH) ||
+ PciNode -> Function != 0x00 ||
+ PciNode -> Device != 0x1f ) {
+ Status = EFI_UNSUPPORTED;
+ }
+ }
+
+ gBS->CloseProtocol (
+ Controller,
+ &gEfiDevicePathProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+
+ if (EFI_ERROR (Status)) {
+ return EFI_UNSUPPORTED;
+ }
+
+ //
+ // Get PciIo protocol instance
+ //
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiPciIoProtocolGuid,
+ (VOID **) &PciIo,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Status = PciIo->Pci.Read (
+ PciIo,
+ EfiPciIoWidthUint32,
+ 0,
+ sizeof (Pci) / sizeof (UINT32),
+ &Pci
+ );
+
+ if (!EFI_ERROR (Status)) {
+ Status = EFI_SUCCESS; //TODO: force return success as temp solution EFI_UNSUPPORTED;
+ if ((Pci.Hdr.Command & 0x03) == 0x03) {
+ if (Pci.Hdr.ClassCode[2] == PCI_CLASS_BRIDGE) {
+ //
+ // See if this is a standard PCI to ISA Bridge from the Base Code
+ // and Class Code
+ //
+ if (Pci.Hdr.ClassCode[1] == PCI_CLASS_BRIDGE_ISA) {
+ Status = EFI_SUCCESS;
+ } else {
+ }
+
+ //
+ // See if this is an Intel PCI to ISA bridge in Positive Decode Mode
+ //
+ if (Pci.Hdr.ClassCode[1] == PCI_CLASS_BRIDGE_ISA_PDECODE &&
+ Pci.Hdr.VendorId == 0x8086 &&
+ Pci.Hdr.DeviceId == 0x7110) {
+ Status = EFI_SUCCESS;
+ } else {
+ }
+ } else {
+ }
+ }
+ else {
+ }
+ }
+
+ gBS->CloseProtocol (
+ Controller,
+ &gEfiPciIoProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+
+ return Status;
+}
+
+/**
+ Install EFI_ISA_ACPI_PROTOCOL
+
+**/
+EFI_STATUS
+EFIAPI
+LpcDriverStart (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ )
+{
+ EFI_STATUS Status;
+ EFI_PCI_IO_PROTOCOL *PciIo;
+ LPC_DEV *LpcDev;
+
+ LpcDev = NULL;
+
+ //
+ // Get Pci IO
+ //
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiPciIoProtocolGuid,
+ (VOID **) &PciIo,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+
+ if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {
+ return Status;
+ }
+
+ mLpc.PciIo = PciIo;
+
+ //
+ // Install IsaAcpi interface, the Sio interface is not installed!
+ //
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &Controller,
+ &gEfiIsaAcpiProtocolGuid,
+ &mLpc.IsaAcpi,
+ NULL
+ );
+
+ return Status;
+}
+
+EFI_STATUS
+EFIAPI
+LpcDriverStop (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN UINTN NumberOfChildren,
+ IN EFI_HANDLE *ChildHandleBuffer
+ )
+{
+ EFI_STATUS Status;
+ EFI_ISA_ACPI_PROTOCOL *IsaAcpi;
+ LPC_DEV *LpcDev;
+
+ //
+ // Get EFI_ISA_ACPI_PROTOCOL interface
+ //
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiIsaAcpiProtocolGuid,
+ (VOID **) &IsaAcpi,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ LpcDev = LPC_ISA_ACPI_FROM_THIS (IsaAcpi);
+
+ //
+ // Uninstall protocol interface: EFI_ISA_ACPI_PROTOCOL
+ //
+ Status = gBS->UninstallProtocolInterface (
+ Controller,
+ &gEfiIsaAcpiProtocolGuid,
+ &LpcDev->IsaAcpi
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ gBS->CloseProtocol (
+ Controller,
+ &gEfiPciIoProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+
+ return EFI_SUCCESS;
+}
+
+VOID
+LpcIoRead8 (
+ IN UINT16 Port,
+ OUT UINT8 *Data
+ )
+{
+ mLpc.PciIo->Io.Read(
+ mLpc.PciIo,
+ EfiPciWidthUint8,
+ EFI_PCI_IO_PASS_THROUGH_BAR,
+ Port,
+ 1,
+ Data
+ );
+}
+
+VOID
+LpcIoWrite8 (
+ IN UINT16 Port,
+ IN UINT8 Data
+ )
+{
+ mLpc.PciIo->Io.Write(
+ mLpc.PciIo,
+ EfiPciWidthUint8,
+ EFI_PCI_IO_PASS_THROUGH_BAR,
+ Port,
+ 1,
+ &Data
+ );
+}
+
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