/** @file
Produces the SIO Protocols for ISA devices integrated in the Platform
Controller Unit (PCU).
Copyright (c) 2004 - 2019, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef __PCU_SIO_H__
#define __PCU_SIO_H__
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#pragma pack(1)
typedef struct {
EFI_ACPI_FIXED_LOCATION_IO_PORT_DESCRIPTOR Io;
EFI_ACPI_END_TAG_DESCRIPTOR End;
} SIO_RESOURCES_IO;
#pragma pack()
typedef struct {
UINT32 Hid;
UINT32 Uid;
ACPI_RESOURCE_HEADER_PTR Resources;
} SIO_DEVICE_INFO;
//
// SIO Bus driver private data structure
//
typedef struct {
EFI_PCI_IO_PROTOCOL *PciIo;
UINT64 OriginalAttributes;
} SIO_BUS_DRIVER_PRIVATE_DATA;
//
// SIO device private data structure
//
typedef struct {
UINT32 Signature;
EFI_HANDLE Handle;
EFI_PCI_IO_PROTOCOL *PciIo;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
EFI_SIO_PROTOCOL Sio;
UINT32 DeviceIndex;
} SIO_DEV;
#define SIO_DEV_SIGNATURE SIGNATURE_32 ('S', 'I', 'O', 'D')
#define SIO_DEV_FROM_SIO(a) CR (a, SIO_DEV, Sio, SIO_DEV_SIGNATURE)
/**
Tests to see if this driver supports a given controller. If a child device is
provided, it further tests to see if this driver supports creating a handle
for the specified child device.
This function checks to see if the driver specified by This supports the
device specified by ControllerHandle. Drivers will typically use the device
path attached to ControllerHandle and/or the services from the bus I/O
abstraction attached to ControllerHandle to determine if the driver supports
ControllerHandle. This function may be called many times during platform
initialization. In order to reduce boot times, the tests performed by this
function must be very small, and take as little time as possible to execute.
This function must not change the state of any hardware devices, and this
function must be aware that the device specified by ControllerHandle may
already be managed by the same driver or a different driver. This function
must match its calls to AllocatePages() with FreePages(), AllocatePool() with
FreePool(), and OpenProtocol() with CloseProtocol(). Since ControllerHandle
may have been previously started by the same driver, if a protocol is already
in the opened state, then it must not be closed with CloseProtocol(). This is
required to guarantee the state of ControllerHandle is not modified by this
function.
@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL
instance.
@param[in] ControllerHandle The handle of the controller to test. This
handle must support a protocol interface
that supplies an I/O abstraction to the
driver.
@param[in] RemainingDevicePath A pointer to the remaining portion of a
device path. This parameter is ignored by
device drivers, and is optional for bus
drivers. For bus drivers, if this parameter
is not NULL, then the bus driver must
determine if the bus controller specified by
ControllerHandle and the child controller
specified by RemainingDevicePath are both
supported by this bus driver.
@retval EFI_SUCCESS The device specified by ControllerHandle and
RemainingDevicePath is supported by the
driver specified by This.
@retval EFI_ALREADY_STARTED The device specified by ControllerHandle and
RemainingDevicePath is already being managed
by the driver specified by This.
@retval EFI_ACCESS_DENIED The device specified by ControllerHandle and
RemainingDevicePath is already being managed
by a different driver or an application that
requires exclusive access.
@retval EFI_UNSUPPORTED The device specified by ControllerHandle and
RemainingDevicePath is not supported by the
driver specified by This.
**/
EFI_STATUS
EFIAPI
PcuSioDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
);
/**
Starts a device controller or a bus controller.
The Start() function is designed to be invoked from the EFI boot service
ConnectController(). As a result, much of the error checking on the
parameters to Start() has been moved into this common boot service. It is
legal to call Start() from other locations, but the following calling
restrictions must be followed or the system behavior will not be
deterministic.
1. ControllerHandle must be a valid EFI_HANDLE.
2. If RemainingDevicePath is not NULL, then it must be a pointer to a
naturally aligned EFI_DEVICE_PATH_PROTOCOL.
3. Prior to calling Start(), the Supported() function for the driver
specified by This must have been called with the same calling parameters,
and Supported() must have returned EFI_SUCCESS.
@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL
instance.
@param[in] ControllerHandle The handle of the controller to start. This
handle must support a protocol interface
that supplies an I/O abstraction to the
driver.
@param[in] RemainingDevicePath A pointer to the remaining portion of a
device path. This parameter is ignored by
device drivers, and is optional for bus
drivers. For a bus driver, if this parameter
is NULL, then handles for all the children
of Controller are created by this driver. If
this parameter is not NULL and the first
Device Path Node is not the End of Device
Path Node, then only the handle for the
child device specified by the first Device
Path Node of RemainingDevicePath is created
by this driver. If the first Device Path
Node of RemainingDevicePath is the End of
Device Path Node, no child handle is created
by this driver.
@retval EFI_SUCCESS The device was started.
@retval EFI_DEVICE_ERROR The device could not be started due to a
device error.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
lack of resources.
@retval Others The driver failded to start the device.
**/
EFI_STATUS
EFIAPI
PcuSioDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
);
/**
Stops a device controller or a bus controller.
The Stop() function is designed to be invoked from the EFI boot service
DisconnectController(). As a result, much of the error checking on the
parameters to Stop() has been moved into this common boot service. It is
legal to call Stop() from other locations, but the following calling
restrictions must be followed or the system behavior will not be
deterministic.
1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous
call to this same driver's Start() function.
2. The first NumberOfChildren handles of ChildHandleBuffer must all be a
valid EFI_HANDLE. In addition, all of these handles must have been created
in this driver's Start() function, and the Start() function must have
called OpenProtocol() on ControllerHandle with an Attribute of
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.
@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL
instance.
@param[in] ControllerHandle A handle to the device being stopped. The
handle must support a bus specific I/O
protocol for the driver to use to stop the
device.
@param[in] NumberOfChildren The number of child device handles in
ChildHandleBuffer.
@param[in] ChildHandleBuffer An array of child handles to be freed. May be
NULL if NumberOfChildren is 0.
@retval EFI_SUCCESS The device was stopped.
@retval EFI_DEVICE_ERROR The device could not be stopped due to a
device error.
**/
EFI_STATUS
EFIAPI
PcuSioDriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
);
/**
Provides a low level access to the registers for the Super I/O.
@param[in] This Indicates a pointer to the calling context.
@param[in] Write Specifies the type of the register operation.
If this parameter is TRUE, Value is interpreted
as an input parameter and the operation is a
register write. If this parameter is FALSE,
Value is interpreted as an output parameter and
the operation is a register read.
@param[in] ExitCfgMode Exit Configuration Mode Indicator. If this
parameter is set to TRUE, the Super I/O driver
will turn off configuration mode of the Super
I/O prior to returning from this function. If
this parameter is set to FALSE, the Super I/O
driver will leave Super I/O in the
configuration mode. The Super I/O driver must
track the current state of the Super I/O and
enable the configuration mode of Super I/O if
necessary prior to register access.
@param[in] Register Register number.
@param[in,out] Value If Write is TRUE, Value is a pointer to the
buffer containing the byte of data to be
written to the Super I/O register. If Write is
FALSE, Value is a pointer to the destination
buffer for the byte of data to be read from the
Super I/O register.
@retval EFI_SUCCESS The operation completed successfully.
@retval EFI_INVALID_PARAMETER The Value is NULL.
@retval EFI_INVALID_PARAMETER Invalid Register number.
**/
EFI_STATUS
EFIAPI
SioRegisterAccess (
IN CONST EFI_SIO_PROTOCOL *This,
IN BOOLEAN Write,
IN BOOLEAN ExitCfgMode,
IN UINT8 Register,
IN OUT UINT8 *Value
);
/**
Provides an interface to get a list of the current resources consumed by the
device in the ACPI Resource Descriptor format.
GetResources() returns a list of resources currently consumed by the device.
The ResourceList is a pointer to the buffer containing resource descriptors
for the device. The descriptors are in the format of Small or Large ACPI
resource descriptor as defined by ACPI specification (2.0 & 3.0). The buffer
of resource descriptors is terminated with the 'End tag' resource descriptor.
@param[in] This Indicates a pointer to the calling context.
@param[out] ResourceList A pointer to an ACPI resource descriptor list
that defines the current resources used by the
device.
@retval EFI_SUCCESS The operation completed successfully.
@retval EFI_INVALID_PARAMETER ResourceList is NULL.
**/
EFI_STATUS
EFIAPI
SioGetResources (
IN CONST EFI_SIO_PROTOCOL *This,
OUT ACPI_RESOURCE_HEADER_PTR *ResourceList
);
/**
Sets the resources for the device.
@param[in] This Indicates a pointer to the calling context.
@param[in] ResourceList Pointer to the ACPI resource descriptor list.
@retval EFI_SUCCESS The operation completed successfully.
@retval EFI_INVALID_PARAMETER ResourceList is invalid.
@retval EFI_ACCESS_DENIED Some of the resources in ResourceList are in
use.
**/
EFI_STATUS
EFIAPI
SioSetResources (
IN CONST EFI_SIO_PROTOCOL *This,
IN ACPI_RESOURCE_HEADER_PTR ResourceList
);
/**
Provides a collection of resource descriptor lists. Each resource descriptor
list in the collection defines a combination of resources that can
potentially be used by the device.
@param[in] This Indicates a pointer to the calling context.
@param[out] ResourceCollection Collection of the resource descriptor
lists.
@retval EFI_SUCCESS The operation completed successfully.
@retval EFI_INVALID_PARAMETER ResourceCollection is NULL.
**/
EFI_STATUS
EFIAPI
SioPossibleResources (
IN CONST EFI_SIO_PROTOCOL *This,
OUT ACPI_RESOURCE_HEADER_PTR *ResourceCollection
);
/**
Provides an interface for a table based programming of the Super I/O
registers.
The Modify() function provides an interface for table based programming of
the Super I/O registers. This function can be used to perform programming of
multiple Super I/O registers with a single function call. For each table
entry, the Register is read, its content is bitwise ANDed with AndMask, and
then ORed with OrMask before being written back to the Register. The Super
I/O driver must track the current state of the Super I/O and enable the
configuration mode of Super I/O if necessary prior to table processing. Once
the table is processed, the Super I/O device has to be returned to the
original state.
@param[in] This Indicates a pointer to the calling context.
@param[in] Command A pointer to an array of NumberOfCommands
EFI_SIO_REGISTER_MODIFY structures. Each
structure specifies a single Super I/O register
modify operation.
@param[in] NumberOfCommands Number of elements in the Command array.
@retval EFI_SUCCESS The operation completed successfully.
@retval EFI_INVALID_PARAMETER Command is NULL.
**/
EFI_STATUS
EFIAPI
SioModify (
IN CONST EFI_SIO_PROTOCOL *This,
IN CONST EFI_SIO_REGISTER_MODIFY *Command,
IN UINTN NumberOfCommands
);
#endif