mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-27 12:15:19 +01:00
198 lines
9.0 KiB
C
198 lines
9.0 KiB
C
/** @file
|
|
This file declares Smbus2 PPI.
|
|
This PPI provides the basic I/O interfaces that a PEIM uses to access its
|
|
SMBus controller and the slave devices attached to it.
|
|
|
|
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
@par Revision Reference:
|
|
This PPI is introduced in PI Version 1.0.
|
|
|
|
**/
|
|
|
|
#ifndef __PEI_SMBUS2_PPI_H__
|
|
#define __PEI_SMBUS2_PPI_H__
|
|
|
|
#include <IndustryStandard/SmBus.h>
|
|
|
|
#define EFI_PEI_SMBUS2_PPI_GUID \
|
|
{ 0x9ca93627, 0xb65b, 0x4324, { 0xa2, 0x2, 0xc0, 0xb4, 0x61, 0x76, 0x45, 0x43 } }
|
|
|
|
|
|
typedef struct _EFI_PEI_SMBUS2_PPI EFI_PEI_SMBUS2_PPI;
|
|
|
|
/**
|
|
Executes an SMBus operation to an SMBus controller. Returns when either
|
|
the command has been executed or an error is encountered in doing the operation.
|
|
|
|
@param This A pointer to the EFI_PEI_SMBUS2_PPI instance.
|
|
@param SlaveAddress The SMBUS hardware address to which the SMBUS device is preassigned or
|
|
allocated.
|
|
@param Command This command is transmitted by the SMBus host controller to the SMBus slave
|
|
device and the interpretation is SMBus slave device specific.
|
|
It can mean the offset to a list of functions inside
|
|
an SMBus slave device. Not all operations or slave devices support
|
|
this command's registers.
|
|
@param Operation Signifies which particular SMBus hardware protocol instance that it
|
|
will use to execute the SMBus transactions.
|
|
This SMBus hardware protocol is defined by the System Management Bus (SMBus)
|
|
Specification and is not related to UEFI.
|
|
@param PecCheck Defines if Packet Error Code (PEC) checking is required for this operation.
|
|
@param Length Signifies the number of bytes that this operation will do.
|
|
The maximum number of bytes can be revision specific and operation specific.
|
|
This parameter will contain the actual number of bytes that are executed
|
|
for this operation. Not all operations require this argument.
|
|
@param Buffer Contains the value of data to execute to the SMBus slave device.
|
|
Not all operations require this argument.
|
|
The length of this buffer is identified by Length.
|
|
|
|
|
|
@retval EFI_SUCCESS The last data that was returned from the access
|
|
matched the poll exit criteria.
|
|
@retval EFI_CRC_ERROR The checksum is not correct (PEC is incorrect)
|
|
@retval EFI_TIMEOUT Timeout expired before the operation was completed.
|
|
Timeout is determined by the SMBus host controller device.
|
|
@retval EFI_OUT_OF_RESOURCES The request could not be completed
|
|
due to a lack of resources.
|
|
@retval EFI_DEVICE_ERROR The request was not completed because
|
|
a failure reflected in the Host Status Register bit.
|
|
@retval EFI_INVALID_PARAMETER Operation is not defined in EFI_SMBUS_OPERATION.
|
|
Or Length/Buffer is NULL for operations except for EfiSmbusQuickRead and
|
|
EfiSmbusQuickWrite. Or Length is outside the range of valid values.
|
|
@retval EFI_UNSUPPORTED The SMBus operation or PEC is not supported.
|
|
@retval EFI_BUFFER_TOO_SMALL Buffer is not sufficient for this operation.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_PEI_SMBUS2_PPI_EXECUTE_OPERATION)(
|
|
IN CONST EFI_PEI_SMBUS2_PPI *This,
|
|
IN EFI_SMBUS_DEVICE_ADDRESS SlaveAddress,
|
|
IN EFI_SMBUS_DEVICE_COMMAND Command,
|
|
IN EFI_SMBUS_OPERATION Operation,
|
|
IN BOOLEAN PecCheck,
|
|
IN OUT UINTN *Length,
|
|
IN OUT VOID *Buffer
|
|
);
|
|
|
|
/**
|
|
The ArpDevice() function enumerates the entire bus or enumerates a specific
|
|
device that is identified by SmbusUdid.
|
|
|
|
@param This A pointer to the EFI_PEI_SMBUS2_PPI instance.
|
|
@param ArpAll A Boolean expression that indicates if the host drivers need
|
|
to enumerate all the devices or enumerate only the device that is identified
|
|
by SmbusUdid. If ArpAll is TRUE, SmbusUdid and SlaveAddress are optional.
|
|
If ArpAll is FALSE, ArpDevice will enumerate SmbusUdid and the address
|
|
will be at SlaveAddress.
|
|
@param SmbusUdid The targeted SMBus Unique Device Identifier (UDID).
|
|
The UDID may not exist for SMBus devices with fixed addresses.
|
|
@param SlaveAddress The new SMBus address for the slave device for
|
|
which the operation is targeted.
|
|
|
|
@retval EFI_SUCCESS The SMBus slave device address was set.
|
|
@retval EFI_INVALID_PARAMETER SlaveAddress is NULL.
|
|
@retval EFI_OUT_OF_RESOURCES The request could not be completed
|
|
due to a lack of resources.
|
|
@retval EFI_TIMEOUT The SMBus slave device did not respond.
|
|
@retval EFI_DEVICE_ERROR The request was not completed because the transaction failed.
|
|
@retval EFI_UNSUPPORTED ArpDevice, GetArpMap, and Notify are not implemented by this PEIM.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_PEI_SMBUS2_PPI_ARP_DEVICE)(
|
|
IN CONST EFI_PEI_SMBUS2_PPI *This,
|
|
IN BOOLEAN ArpAll,
|
|
IN EFI_SMBUS_UDID *SmbusUdid, OPTIONAL
|
|
IN OUT EFI_SMBUS_DEVICE_ADDRESS *SlaveAddress OPTIONAL
|
|
);
|
|
|
|
/**
|
|
The GetArpMap() function returns the mapping of all the SMBus devices
|
|
that are enumerated by the SMBus host driver.
|
|
|
|
@param This A pointer to the EFI_PEI_SMBUS2_PPI instance.
|
|
@param Length Size of the buffer that contains the SMBus device map.
|
|
@param SmbusDeviceMap The pointer to the device map as enumerated
|
|
by the SMBus controller driver.
|
|
|
|
@retval EFI_SUCCESS The device map was returned correctly in the buffer.
|
|
@retval EFI_UNSUPPORTED ArpDevice, GetArpMap, and Notify are not implemented by this PEIM.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_PEI_SMBUS2_PPI_GET_ARP_MAP)(
|
|
IN CONST EFI_PEI_SMBUS2_PPI *This,
|
|
IN OUT UINTN *Length,
|
|
IN OUT EFI_SMBUS_DEVICE_MAP **SmbusDeviceMap
|
|
);
|
|
|
|
/**
|
|
CallBack function can be registered in EFI_PEI_SMBUS2_PPI_NOTIFY.
|
|
|
|
@param This A pointer to the EFI_PEI_SMBUS2_PPI instance.
|
|
@param SlaveAddress The SMBUS hardware address to which the SMBUS
|
|
device is preassigned or allocated.
|
|
@param Data Data of the SMBus host notify command that
|
|
the caller wants to be called.
|
|
|
|
@retval EFI_SUCCESS NotifyFunction has been registered.
|
|
@retval EFI_UNSUPPORTED ArpDevice, GetArpMap, and Notify are not
|
|
implemented by this PEIM.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_PEI_SMBUS_NOTIFY2_FUNCTION)(
|
|
IN CONST EFI_PEI_SMBUS2_PPI *SmbusPpi,
|
|
IN EFI_SMBUS_DEVICE_ADDRESS SlaveAddress,
|
|
IN UINTN Data
|
|
);
|
|
|
|
/**
|
|
The Notify() function registers all the callback functions to allow the
|
|
bus driver to call these functions when the SlaveAddress/Data pair happens.
|
|
|
|
@param This A pointer to the EFI_PEI_SMBUS2_PPI instance.
|
|
@param SlaveAddress Address that the host controller detects as
|
|
sending a message and calls all the registered functions.
|
|
@param Data Data that the host controller detects as sending a message
|
|
and calls all the registered functions.
|
|
@param NotifyFunction The function to call when the bus driver
|
|
detects the SlaveAddress and Data pair.
|
|
|
|
@retval EFI_SUCCESS NotifyFunction has been registered.
|
|
@retval EFI_UNSUPPORTED ArpDevice, GetArpMap, and Notify are not
|
|
implemented by this PEIM.
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_PEI_SMBUS2_PPI_NOTIFY)(
|
|
IN CONST EFI_PEI_SMBUS2_PPI *This,
|
|
IN EFI_SMBUS_DEVICE_ADDRESS SlaveAddress,
|
|
IN UINTN Data,
|
|
IN EFI_PEI_SMBUS_NOTIFY2_FUNCTION NotifyFunction
|
|
);
|
|
|
|
///
|
|
/// Provides the basic I/O interfaces that a PEIM uses to access
|
|
/// its SMBus controller and the slave devices attached to it.
|
|
///
|
|
struct _EFI_PEI_SMBUS2_PPI {
|
|
EFI_PEI_SMBUS2_PPI_EXECUTE_OPERATION Execute;
|
|
EFI_PEI_SMBUS2_PPI_ARP_DEVICE ArpDevice;
|
|
EFI_PEI_SMBUS2_PPI_GET_ARP_MAP GetArpMap;
|
|
EFI_PEI_SMBUS2_PPI_NOTIFY Notify;
|
|
///
|
|
/// Identifier which uniquely identifies this SMBus controller in a system.
|
|
///
|
|
EFI_GUID Identifier;
|
|
};
|
|
|
|
extern EFI_GUID gEfiPeiSmbus2PpiGuid;
|
|
|
|
#endif
|