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Diffstat (limited to 'src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/SmbusHc.h')
| -rw-r--r-- | src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/SmbusHc.h | 295 |
1 files changed, 295 insertions, 0 deletions
diff --git a/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/SmbusHc.h b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/SmbusHc.h new file mode 100644 index 0000000000..d5620d7a6c --- /dev/null +++ b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/SmbusHc.h @@ -0,0 +1,295 @@ +/** @file + The file provides basic SMBus host controller management + and basic data transactions over the SMBus. + + Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR> + 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. + + @par Revision Reference: PI + Version 1.00. + +**/ + +#ifndef __SMBUS_HC_H__ +#define __SMBUS_HC_H__ + +#include <IndustryStandard/SmBus.h> + +#define EFI_SMBUS_HC_PROTOCOL_GUID \ + {0xe49d33ed, 0x513d, 0x4634, { 0xb6, 0x98, 0x6f, 0x55, 0xaa, 0x75, 0x1c, 0x1b} } + +typedef struct _EFI_SMBUS_HC_PROTOCOL EFI_SMBUS_HC_PROTOCOL; + +/** + + The Execute() function provides a standard way to execute an + operation as defined in the System Management Bus (SMBus) + Specification. The resulting transaction will be either that + the SMBus slave devices accept this transaction or that this + function returns with error. + + @param This A pointer to the EFI_SMBUS_HC_PROTOCOL instance. + SlaveAddress The SMBus slave address of the device + with which to communicate. Type + EFI_SMBUS_DEVICE_ADDRESS is defined in + EFI_PEI_SMBUS_PPI.Execute() in the Platform + Initialization SMBus PPI Specification. + + @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. Type + EFI_SMBUS_DEVICE_COMMAND is defined in + EFI_PEI_SMBUS_PPI.Execute() in the Platform + Initialization SMBus PPI Specification. + + @param Operation Signifies the particular SMBus + hardware protocol instance it will use to + execute the SMBus transactions. This SMBus + hardware protocol is defined by the SMBus + Specification and is not related to PI + Architecture. Type EFI_SMBUS_OPERATION is + defined in EFI_PEI_SMBUS_PPI.Execute() in the + Platform Initialization SMBus PPI + Specification. + + @param PecCheck Defines if Packet Error Code (PEC) checking + is required for this operation. SMBus Host + Controller Code Definitions Version 1.0 + August 21, 2006 13 + + @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 field + 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 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 that was reflected + in the Host Status Register bit. + Device errors are a result of a + transaction collision, illegal + command field, unclaimed cycle (host + initiated), or bus errors + (collisions). + + @retval EFI_INVALID_PARAMETER Operation is not defined in + EFI_SMBUS_OPERATION. + + @retval EFI_INVALID_PARAMETER 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_SMBUS_HC_EXECUTE_OPERATION)( + IN CONST EFI_SMBUS_HC_PROTOCOL *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 provides a standard way for a device driver to + enumerate the entire SMBus or specific devices on the bus. + + @param This A pointer to the EFI_SMBUS_HC_PROTOCOL 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 Unique Device Identifier (UDID) that is + associated with this device. Type + EFI_SMBUS_UDID is defined in + EFI_PEI_SMBUS_PPI.ArpDevice() in the + Platform Initialization SMBus PPI + Specification. + + @param SlaveAddress The SMBus slave address that is + associated with an SMBus UDID. + + @retval EFI_SUCCESS The last data that was returned from the + access matched the poll exit criteria. + + @retval EFI_CRC_ERROR 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 was reflected in + the Host Status Register bit. Device + Errors are a result of a transaction + collision, illegal command field, + unclaimed cycle (host initiated), or + bus errors (collisions). + + @retval EFI_UNSUPPORTED ArpDevice, GetArpMap, and Notify are + not implemented by this driver. + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_SMBUS_HC_PROTOCOL_ARP_DEVICE)( + IN CONST EFI_SMBUS_HC_PROTOCOL *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 were enumerated by the SMBus host driver. + + @param This A pointer to the EFI_SMBUS_HC_PROTOCOL 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 SMBus returned the current device map. + + @retval EFI_UNSUPPORTED ArpDevice, GetArpMap, and Notify are + not implemented by this driver. + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_SMBUS_HC_PROTOCOL_GET_ARP_MAP)( + IN CONST EFI_SMBUS_HC_PROTOCOL *This, + IN OUT UINTN *Length, + IN OUT EFI_SMBUS_DEVICE_MAP **SmbusDeviceMap +); + +/** + The notify function does some actions. + + @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 EFI_STATUS +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_SMBUS_NOTIFY_FUNCTION)( + 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_SMBUS_HC_PROTOCOL instance. + + @param SlaveAddress Address that the host controller detects + as sending a message and calls all the registered function. + + @param Data Data that the host controller detects as sending + message and calls all the registered function. + + + @param NotifyFunction The function to call when the bus + driver detects the SlaveAddress and + Data pair. + + @retval EFI_SUCCESS NotifyFunction was registered. + + @retval EFI_UNSUPPORTED ArpDevice, GetArpMap, and Notify are + not implemented by this driver. + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_SMBUS_HC_PROTOCOL_NOTIFY)( + IN CONST EFI_SMBUS_HC_PROTOCOL *This, + IN EFI_SMBUS_DEVICE_ADDRESS SlaveAddress, + IN UINTN Data, + IN EFI_SMBUS_NOTIFY_FUNCTION NotifyFunction +); + + +/// +/// The EFI_SMBUS_HC_PROTOCOL provides SMBus host controller management and basic data +/// transactions over SMBus. There is one EFI_SMBUS_HC_PROTOCOL instance for each SMBus +/// host controller. +/// +struct _EFI_SMBUS_HC_PROTOCOL { + EFI_SMBUS_HC_EXECUTE_OPERATION Execute; + EFI_SMBUS_HC_PROTOCOL_ARP_DEVICE ArpDevice; + EFI_SMBUS_HC_PROTOCOL_GET_ARP_MAP GetArpMap; + EFI_SMBUS_HC_PROTOCOL_NOTIFY Notify; +}; + + +extern EFI_GUID gEfiSmbusHcProtocolGuid; + +#endif + |