mirror of https://github.com/acidanthera/audk.git
214 lines
8.8 KiB
C
214 lines
8.8 KiB
C
/** @file
|
|
This file declares Smbus PPI.
|
|
|
|
Copyright (c) 2007, Intel Corporation
|
|
All rights reserved. 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.
|
|
|
|
Module Name: Smbus.h
|
|
|
|
@par Revision Reference:
|
|
This PPI is defined in Framework of EFI SmBus PPI spec.
|
|
Version 0.9
|
|
|
|
**/
|
|
|
|
#ifndef _PEI_SMBUS_PPI_H
|
|
#define _PEI_SMBUS_PPI_H
|
|
|
|
#include <PiPei.h>
|
|
#include <Ppi/Smbus2.h>
|
|
|
|
#define EFI_PEI_SMBUS_PPI_GUID \
|
|
{ \
|
|
0xabd42895, 0x78cf, 0x4872, {0x84, 0x44, 0x1b, 0x5c, 0x18, 0xb, 0xfb, 0xda } \
|
|
}
|
|
|
|
typedef struct _EFI_PEI_SMBUS_PPI EFI_PEI_SMBUS_PPI;
|
|
|
|
/**
|
|
Executes an SMBus operation to an SMBus controller.
|
|
|
|
@param PeiServices A pointer to the system PEI Services Table.
|
|
@param This A pointer to the EFI_PEI_SMBUS_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.
|
|
@param Operation Signifies which particular SMBus hardware protocol
|
|
instance that it will use to execute the SMBus transactions.
|
|
@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.
|
|
@param Buffer Contains the value of data to execute to the SMBus slave device.
|
|
|
|
@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. 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_SMBUS_PPI_EXECUTE_OPERATION) (
|
|
IN EFI_PEI_SERVICES **PeiServices,
|
|
IN EFI_PEI_SMBUS_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
|
|
);
|
|
|
|
/**
|
|
CallBack function can be registered in EFI_PEI_SMBUS_PPI_NOTIFY.
|
|
|
|
@param PeiServices A pointer to the system PEI Services Table.
|
|
@param This A pointer to the EFI_PEI_SMBUS_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.
|
|
|
|
@return Status Code
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_PEI_SMBUS_NOTIFY_FUNCTION) (
|
|
IN EFI_PEI_SERVICES **PeiServices,
|
|
IN EFI_PEI_SMBUS_PPI *SmbusPpi,
|
|
IN EFI_SMBUS_DEVICE_ADDRESS SlaveAddress,
|
|
IN UINTN Data
|
|
);
|
|
|
|
/**
|
|
The ArpDevice() function enumerates the entire bus or enumerates a specific
|
|
device that is identified by SmbusUdid.
|
|
|
|
@param PeiServices A pointer to the system PEI Services Table.
|
|
@param This A pointer to the EFI_PEI_SMBUS_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.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_PEI_SMBUS_PPI_ARP_DEVICE) (
|
|
IN EFI_PEI_SERVICES **PeiServices,
|
|
IN EFI_PEI_SMBUS_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 PeiServices A pointer to the system PEI Services Table.
|
|
@param This A pointer to the EFI_PEI_SMBUS_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.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_PEI_SMBUS_PPI_GET_ARP_MAP) (
|
|
IN EFI_PEI_SERVICES **PeiServices,
|
|
IN EFI_PEI_SMBUS_PPI *This,
|
|
IN OUT UINTN *Length,
|
|
IN OUT EFI_SMBUS_DEVICE_MAP **SmbusDeviceMap
|
|
);
|
|
|
|
/**
|
|
The Notify() function registers all the callback functions to allow the
|
|
bus driver to call these functions when the SlaveAddress/Data pair happens.
|
|
|
|
@param PeiServices A pointer to the system PEI Services Table.
|
|
@param This A pointer to the EFI_PEI_SMBUS_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.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_PEI_SMBUS_PPI_NOTIFY) (
|
|
IN EFI_PEI_SERVICES **PeiServices,
|
|
IN EFI_PEI_SMBUS_PPI *This,
|
|
IN EFI_SMBUS_DEVICE_ADDRESS SlaveAddress,
|
|
IN UINTN Data,
|
|
IN EFI_PEI_SMBUS_NOTIFY_FUNCTION NotifyFunction
|
|
);
|
|
|
|
/**
|
|
@par Ppi Description:
|
|
Provides the basic I/O interfaces that a PEIM uses to access
|
|
its SMBus controller and the slave devices attached to it.
|
|
|
|
@param Execute
|
|
Executes the SMBus operation to an SMBus slave device.
|
|
|
|
@param ArpDevice
|
|
Allows an SMBus 2.0 device(s) to be Address Resolution Protocol (ARP)
|
|
|
|
@param GetArpMap
|
|
Allows a PEIM to retrieve the address that was allocated by the SMBus
|
|
host controller during enumeration/ARP.
|
|
|
|
@param Notify
|
|
Allows a driver to register for a callback to the SMBus host
|
|
controller driver when the bus issues a notification to the bus controller PEIM.
|
|
|
|
**/
|
|
struct _EFI_PEI_SMBUS_PPI {
|
|
EFI_PEI_SMBUS_PPI_EXECUTE_OPERATION Execute;
|
|
EFI_PEI_SMBUS_PPI_ARP_DEVICE ArpDevice;
|
|
EFI_PEI_SMBUS_PPI_GET_ARP_MAP GetArpMap;
|
|
EFI_PEI_SMBUS_PPI_NOTIFY Notify;
|
|
};
|
|
|
|
extern EFI_GUID gEfiPeiSmbusPpiGuid;
|
|
|
|
#endif
|