/** @file
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Super I/O specific implementation.
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Copyright (c) 2010 - 2020 Intel Corporation. All rights reserved. <BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "SioDriver.h"
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//
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// System configuration (setup) information
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//
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// SYSTEM_CONFIGURATION mSystemConfiguration;
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//
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// COM 1 UART Controller
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//
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ACPI_SIO_RESOURCES_IO_IRQ mCom1Resources = {
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{
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{ ACPI_FIXED_LOCATION_IO_PORT_DESCRIPTOR },
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FixedPcdGet16 (PcdUart1IoPort),
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FixedPcdGet8 (PcdUart1Length)
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},
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{
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{ ACPI_IRQ_NOFLAG_DESCRIPTOR },
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FixedPcdGet16 (PcdUart1IrqMask)
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},
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{
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ACPI_END_TAG_DESCRIPTOR,
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0
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}
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};
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//
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// COM 2 UART Controller
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//
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ACPI_SIO_RESOURCES_IO_IRQ mCom2Resources = {
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{
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{ ACPI_FIXED_LOCATION_IO_PORT_DESCRIPTOR },
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FixedPcdGet16 (PcdUart2IoPort),
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FixedPcdGet8 (PcdUart2Length)
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},
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{
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{ ACPI_IRQ_NOFLAG_DESCRIPTOR },
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FixedPcdGet16 (PcdUart2IrqMask),
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},
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{
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ACPI_END_TAG_DESCRIPTOR,
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0
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}
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};
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//
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// PS/2 Keyboard Controller
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//
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ACPI_SIO_RESOURCES_IO_IRQ mKeyboardResources = {
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{
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{ ACPI_FIXED_LOCATION_IO_PORT_DESCRIPTOR },
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0x60,
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5
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},
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{
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{ ACPI_IRQ_NOFLAG_DESCRIPTOR },
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BIT1
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},
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{
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ACPI_END_TAG_DESCRIPTOR,
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0
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}
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};
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//
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// PS/2 Mouse Controller
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//
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ACPI_SIO_RESOURCES_IO_IRQ mMouseResources = {
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{
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{ ACPI_FIXED_LOCATION_IO_PORT_DESCRIPTOR },
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0x60,
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5
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},
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{
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{ ACPI_IRQ_NOFLAG_DESCRIPTOR },
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BIT12
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},
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{
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ACPI_END_TAG_DESCRIPTOR,
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0
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}
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};
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//
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// Table of SIO Controllers
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//
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DEVICE_INFO mDeviceInfo[] = {
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#if FixedPcdGet8 (PcdUart1Enable) == DEVICE_ENABLED
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{
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{
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EISA_PNP_ID(0x501),
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0
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},
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0,
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RESOURCE_IO | RESOURCE_IRQ,
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{ (ACPI_SMALL_RESOURCE_HEADER *) &mCom1Resources },
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{ (ACPI_SMALL_RESOURCE_HEADER *) &mCom1Resources }
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}, // COM 1 UART Controller
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#endif
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#if FixedPcdGet8 (PcdUart2Enable) == DEVICE_ENABLED
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{
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{
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EISA_PNP_ID(0x501),
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0
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},
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0,
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RESOURCE_IO | RESOURCE_IRQ,
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{ (ACPI_SMALL_RESOURCE_HEADER *) &mCom2Resources },
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{ (ACPI_SMALL_RESOURCE_HEADER *) &mCom2Resources }
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}, // COM 2 UART Controller
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#endif
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#if FixedPcdGet8 (PcdPs2KbMsEnable) == DEVICE_ENABLED
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{
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{
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EISA_PNP_ID(0x303),
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0
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},
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0,
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0, // Cannot change resource
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{ (ACPI_SMALL_RESOURCE_HEADER *) &mKeyboardResources },
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{ (ACPI_SMALL_RESOURCE_HEADER *) &mKeyboardResources }
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}, // PS/2 Keyboard Controller
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{
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{
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EISA_PNP_ID(0xF03),
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0
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},
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0,
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0, // Cannot change resource
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{ (ACPI_SMALL_RESOURCE_HEADER *) &mMouseResources },
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{ (ACPI_SMALL_RESOURCE_HEADER *) &mMouseResources }
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}, // PS/2 Mouse Controller
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#endif
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DEVICE_INFO_END
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};
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/**
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Gets the number of devices in Table of SIO Controllers mDeviceInfo.
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@retval Number of enabled devices in Table of SIO Controllers.
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**/
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UINTN
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EFIAPI
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GetDeviceCount (
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VOID
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)
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{
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UINTN Count;
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// Get mDeviceInfo item count
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// -1 to account for for the end device info
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Count = ARRAY_SIZE (mDeviceInfo) - 1;
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return Count;
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}
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/**
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Return the supported devices.
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@param[out] Devices Pointer to pointer of EFI_SIO_ACPI_DEVICE_ID.
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Caller is responsible to free the buffer.
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@param[out] Count Pointer to UINTN holding the device count.
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**/
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VOID
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DeviceGetList (
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OUT EFI_SIO_ACPI_DEVICE_ID **Devices,
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OUT UINTN *Count
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)
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{
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EFI_SIO_ACPI_DEVICE_ID *LocalDevices;
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UINTN LocalCount;
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UINTN DeviceCount;
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UINTN Index;
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//
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// Allocate enough memory for simplicity
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//
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DeviceCount = GetDeviceCount ();
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LocalDevices = AllocatePool (sizeof (EFI_SIO_ACPI_DEVICE_ID) * DeviceCount);
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ASSERT (LocalDevices != NULL);
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if (LocalDevices == NULL) {
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return;
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}
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LocalCount = 0;
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for (Index = 0; Index < DeviceCount; Index++) {
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CopyMem (&LocalDevices[LocalCount], &mDeviceInfo[Index].Device, sizeof (EFI_SIO_ACPI_DEVICE_ID));
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LocalCount++;
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}
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*Devices = LocalDevices;
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*Count = LocalCount;
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}
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/**
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Super I/O controller initialization.
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@retval EFI_SUCCESS The super I/O controller is found and initialized.
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@retval EFI_UNSUPPORTED The super I/O controller is not found.
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**/
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EFI_STATUS
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SioInit (
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VOID
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)
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{
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return EFI_SUCCESS;
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}
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/**
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Find the DEVICE_INFO for specified Device.
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@param[in] Device Pointer to the EFI_SIO_ACPI_DEVICE_ID.
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@retval DEVICE_INFO* Pointer to the DEVICE_INFO.
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**/
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DEVICE_INFO *
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DeviceSearch (
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IN EFI_SIO_ACPI_DEVICE_ID *Device
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)
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{
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UINTN Index;
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UINTN DeviceCount;
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DeviceCount = GetDeviceCount ();
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for (Index = 0; Index < DeviceCount; Index++) {
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if (CompareMem (Device, &mDeviceInfo[Index].Device, sizeof (*Device)) == 0) {
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return &mDeviceInfo[Index];
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}
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}
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ASSERT (FALSE);
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return NULL;
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}
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/**
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Program the SIO chip to enable the specified device using the default resource.
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@param[in] Device Pointer to EFI_SIO_ACPI_DEVICE_ID.
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**/
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VOID
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DeviceEnable (
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IN EFI_SIO_ACPI_DEVICE_ID *Device
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)
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{
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}
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/**
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Get the ACPI resources for specified device.
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@param[in] Device Pointer to EFI_SIO_ACPI_DEVICE_ID.
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@param[out] Resources Pointer to ACPI_RESOURCE_HEADER_PTR.
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@retval EFI_SUCCESS The resources are returned successfully.
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**/
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EFI_STATUS
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DeviceGetResources (
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IN EFI_SIO_ACPI_DEVICE_ID *Device,
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OUT ACPI_RESOURCE_HEADER_PTR *Resources
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)
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{
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DEVICE_INFO *DeviceInfo;
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DeviceInfo = DeviceSearch (Device);
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*Resources = DeviceInfo->Resources;
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return EFI_SUCCESS;
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}
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/**
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Set the ACPI resources for specified device.
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The SIO chip is programmed to use the new resources and the
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resources setting are saved. The function assumes the resources
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are valid.
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@param[in] Device Pointer to EFI_SIO_ACPI_DEVICE_ID.
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@param[in] Resources ACPI_RESOURCE_HEADER_PTR.
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@retval EFI_UNSUPPORTED
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**/
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EFI_STATUS
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DeviceSetResources (
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IN EFI_SIO_ACPI_DEVICE_ID *Device,
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IN ACPI_RESOURCE_HEADER_PTR Resources
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)
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{
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return EFI_UNSUPPORTED;
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}
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/**
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Get the possible ACPI resources for specified device.
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@param[in] Device Pointer to EFI_SIO_ACPI_DEVICE_ID.
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@param[out] Resources Pointer to ACPI_RESOURCE_HEADER_PTR.
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@retval EFI_SUCCESS The resources are returned successfully.
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**/
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EFI_STATUS
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DevicePossibleResources (
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IN EFI_SIO_ACPI_DEVICE_ID *Device,
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OUT ACPI_RESOURCE_HEADER_PTR *Resources
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)
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{
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DEVICE_INFO *DeviceInfo;
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DeviceInfo = DeviceSearch (Device);
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*Resources = DeviceInfo->PossibleResources;
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return EFI_SUCCESS;
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}
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