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/** @file
Super I/O specific header.
Copyright (c) 2010 - 2019 Intel Corporation. All rights reserved. <BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef _SIO_H_
#define _SIO_H_
#include "Register.h"
typedef
UINT8
(EFIAPI *LOCAL_IO_WRITE8) (
IN UINTN Port,
IN UINT8 Value
);
#define RESOURCE_IO BIT0
#define RESOURCE_IRQ BIT1
#define RESOURCE_DMA BIT2
#define RESOURCE_MEM BIT3
#define DEVICE_ENABLED 0x01
#define DEVICE_INFO_END { { 0xFFFFFFFF, 0xFFFFFFFF } }
#pragma pack(1)
typedef struct {
EFI_ACPI_FIXED_LOCATION_IO_PORT_DESCRIPTOR Io;
EFI_ACPI_IRQ_NOFLAG_DESCRIPTOR Irq;
EFI_ACPI_END_TAG_DESCRIPTOR End;
} ACPI_SIO_RESOURCES_IO_IRQ;
#pragma pack()
typedef struct {
UINT32 HID;
UINT32 UID;
} EFI_SIO_ACPI_DEVICE_ID;
typedef struct {
EFI_SIO_ACPI_DEVICE_ID Device;
UINT8 DeviceId;
UINT8 ResourceMask;
ACPI_RESOURCE_HEADER_PTR Resources;
ACPI_RESOURCE_HEADER_PTR PossibleResources;
} DEVICE_INFO;
typedef struct {
UINT8 Segment;
UINT8 Bus;
UINT8 Device;
UINT8 Funtion;
} SIO_PCI_ISA_BRIDGE_DEVICE_INFO;
/**
Return the supported devices.
@param[out] Devices Pointer to pointer of EFI_SIO_ACPI_DEVICE_ID.
Caller is responsible to free the buffer.
@param[out] Count Pointer to UINTN holding the device count.
**/
VOID
DeviceGetList (
OUT EFI_SIO_ACPI_DEVICE_ID **Devices,
OUT UINTN *Count
);
/**
Program the SIO chip to enable the specified device using the default resource.
@param[in] Device Pointer to EFI_SIO_ACPI_DEVICE_ID.
**/
VOID
DeviceEnable (
IN EFI_SIO_ACPI_DEVICE_ID *Device
);
/**
Get the possible ACPI resources for specified device.
@param[in] Device Pointer to EFI_SIO_ACPI_DEVICE_ID.
@param[out] Resources Pointer to ACPI_RESOURCE_HEADER_PTR.
@retval EFI_SUCCESS The resources are returned successfully.
**/
EFI_STATUS
DevicePossibleResources (
IN EFI_SIO_ACPI_DEVICE_ID *Device,
OUT ACPI_RESOURCE_HEADER_PTR *Resources
);
/**
Set the ACPI resources for specified device.
The SIO chip is programmed to use the new resources and the
resources setting are saved. The function assumes the resources
are valid.
@param[in] Device Pointer to EFI_SIO_ACPI_DEVICE_ID.
@param[in] Resources ACPI_RESOURCE_HEADER_PTR.
@retval EFI_SUCCESS The resources are set successfully.
**/
EFI_STATUS
DeviceSetResources (
IN EFI_SIO_ACPI_DEVICE_ID *Device,
IN ACPI_RESOURCE_HEADER_PTR Resources
);
/**
Get the ACPI resources for specified device.
@param[in] Device Pointer to EFI_SIO_ACPI_DEVICE_ID.
@param[out] Resources Pointer to ACPI_RESOURCE_HEADER_PTR.
@retval EFI_SUCCESS The resources are returned successfully.
**/
EFI_STATUS
DeviceGetResources (
IN EFI_SIO_ACPI_DEVICE_ID *Device,
OUT ACPI_RESOURCE_HEADER_PTR *Resources
);
/**
Program the SIO chip to enter the configure mode.
**/
VOID
EnterConfigMode (
VOID
);
/**
Program the SIO chip to exit the configure mode.
**/
VOID
ExitConfigMode (
VOID
);
/**
Perform a 8-bit I/O write to SIO register.
@param[in] Index The register index.
@param[in] Data The value to write to register.
**/
VOID
WriteRegister (
IN UINT8 Index,
IN UINT8 Data
);
/**
Perform a 8-bit I/O read from SIO register.
@param[in] Index The register index.
@retval Value The value written to the register.
**/
UINT8
ReadRegister (
IN UINT8 Index
);
//
// Prototypes for the sio internal function
//
//
// Internal function
//
/**
Find Super I/O controller.
@retval EFI_SUCCESS Super I/O controller exists.
@retval EFI_UNSUPPORTED Super I/O controller does not exist.
**/
EFI_STATUS
SioInit (
VOID
);
#endif
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