diff options
| author | yshang1 <yshang1@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-06-29 05:29:46 +0000 |
|---|---|---|
| committer | yshang1 <yshang1@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-06-29 05:29:46 +0000 |
| commit | dd51a993419cb90cc954aa4d9ae53fb012991d21 (patch) | |
| tree | 452b405d762d52fb5aa499a7e29d60e409f2aa1b /MdePkg/Library/DxeSmbusLib | |
| parent | 273393ca7d413b563419fc3216061ce4ed2e003a (diff) | |
| download | edk2-platforms-dd51a993419cb90cc954aa4d9ae53fb012991d21.tar.xz | |
Import BaseMemoryLibMmx;
Import PeiMemoryLib;
Import BasePeCoffLib;
Import PeiSmbusLibSmbus2;
Import DxeMemoryLib;
Import HiiLib;
Update UefiLib to support multiple language codes;
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2886 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/DxeSmbusLib')
| -rw-r--r-- | MdePkg/Library/DxeSmbusLib/DxeSmbusLib.c | 104 | ||||
| -rw-r--r-- | MdePkg/Library/DxeSmbusLib/DxeSmbusLib.msa | 58 | ||||
| -rw-r--r-- | MdePkg/Library/DxeSmbusLib/InternalSmbusLib.h | 60 | ||||
| -rw-r--r-- | MdePkg/Library/DxeSmbusLib/SmbusLib.c | 470 |
4 files changed, 692 insertions, 0 deletions
diff --git a/MdePkg/Library/DxeSmbusLib/DxeSmbusLib.c b/MdePkg/Library/DxeSmbusLib/DxeSmbusLib.c new file mode 100644 index 0000000000..18a7973f21 --- /dev/null +++ b/MdePkg/Library/DxeSmbusLib/DxeSmbusLib.c @@ -0,0 +1,104 @@ +/** @file
+Implementation of SmBusLib class library for PEI phase.
+
+Copyright (c) 2006, Intel Corporation<BR>
+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: DxeSmbusLib.c
+
+**/
+
+#include "InternalSmbusLib.h"
+
+#include <Protocol/SmbusHc.h>
+
+//
+// Globle varible to cache pointer to Smbus protocol.
+//
+STATIC EFI_SMBUS_HC_PROTOCOL *mSmbus = NULL;
+
+/**
+ The constructor function caches the pointer to Smbus protocol.
+
+ The constructor function locates Smbus protocol from protocol database.
+ It will ASSERT() if that operation fails and it will always return EFI_SUCCESS.
+
+ @param ImageHandle The firmware allocated handle for the EFI image.
+ @param SystemTable A pointer to the EFI System Table.
+
+ @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
+
+**/
+EFI_STATUS
+EFIAPI
+SmbusLibConstructor (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+
+ Status = gBS->LocateProtocol (&gEfiSmbusHcProtocolGuid, NULL, (VOID**) &mSmbus);
+ ASSERT_EFI_ERROR (Status);
+ ASSERT (mSmbus != NULL);
+
+ return Status;
+}
+
+/**
+ Executes an SMBus operation to an SMBus controller.
+
+ This function provides a standard way to execute Smbus script
+ as defined in the SmBus Specification. The data can either be of
+ the Length byte, word, or a block of data.
+
+ @param SmbusOperation Signifies which particular SMBus hardware protocol instance that it will use to
+ execute the SMBus transactions.
+ @param SmBusAddress Address that encodes the SMBUS Slave Address,
+ SMBUS Command, SMBUS Data Length, and PEC.
+ @param Length Signifies the number of bytes that this operation will do. The maximum number of
+ bytes can be revision specific and operation specific.
+ @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.
+ @param Status Return status for the executed command.
+ This is an optional parameter and may be NULL.
+
+ @return The actual number of bytes that are executed for this operation..
+
+**/
+UINTN
+InternalSmBusExec (
+ IN EFI_SMBUS_OPERATION SmbusOperation,
+ IN UINTN SmBusAddress,
+ IN UINTN Length,
+ IN OUT VOID *Buffer,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ RETURN_STATUS ReturnStatus;
+ EFI_SMBUS_DEVICE_ADDRESS SmbusDeviceAddress;
+
+ SmbusDeviceAddress.SmbusDeviceAddress = SMBUS_LIB_SLAVE_ADDRESS (SmBusAddress);
+
+ ReturnStatus = mSmbus->Execute (
+ mSmbus,
+ SmbusDeviceAddress,
+ SMBUS_LIB_COMMAND (SmBusAddress),
+ SmbusOperation,
+ SMBUS_LIB_PEC (SmBusAddress),
+ &Length,
+ Buffer
+ );
+ if (Status != NULL) {
+ *Status = ReturnStatus;
+ }
+
+ return Length;
+}
diff --git a/MdePkg/Library/DxeSmbusLib/DxeSmbusLib.msa b/MdePkg/Library/DxeSmbusLib/DxeSmbusLib.msa new file mode 100644 index 0000000000..39b923a520 --- /dev/null +++ b/MdePkg/Library/DxeSmbusLib/DxeSmbusLib.msa @@ -0,0 +1,58 @@ +<?xml version="1.0" encoding="UTF-8"?>
+<ModuleSurfaceArea xmlns="http://www.TianoCore.org/2006/Edk2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+ <MsaHeader>
+ <ModuleName>DxeSmbusLib</ModuleName>
+ <ModuleType>DXE_DRIVER</ModuleType>
+ <GuidValue>07720769-A7D0-4a8d-BE41-71CC18EB3338</GuidValue>
+ <Version>1.0</Version>
+ <Abstract>Component description file for Dxe Smbus Library.</Abstract>
+ <Description>SMBUS Library that layers on top of the SMBUS Protocol.</Description>
+ <Copyright>Copyright (c) 2006, Intel Corporation</Copyright>
+ <License>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.</License>
+ <Specification>FRAMEWORK_BUILD_PACKAGING_SPECIFICATION 0x00000052</Specification>
+ </MsaHeader>
+ <ModuleDefinitions>
+ <SupportedArchitectures>IA32 X64 IPF EBC</SupportedArchitectures>
+ <BinaryModule>false</BinaryModule>
+ <OutputFileBasename>DxeSmbusLib</OutputFileBasename>
+ </ModuleDefinitions>
+ <LibraryClassDefinitions>
+ <LibraryClass Usage="ALWAYS_PRODUCED" SupModuleList="DXE_DRIVER DXE_RUNTIME_DRIVER DXE_SAL_DRIVER DXE_SMM_DRIVER UEFI_APPLICATION UEFI_DRIVER">
+ <Keyword>SmbusLib</Keyword>
+ </LibraryClass>
+ <LibraryClass Usage="ALWAYS_CONSUMED">
+ <Keyword>DebugLib</Keyword>
+ </LibraryClass>
+ <LibraryClass Usage="ALWAYS_CONSUMED">
+ <Keyword>UefiBootServicesTableLib</Keyword>
+ </LibraryClass>
+ <LibraryClass Usage="ALWAYS_CONSUMED">
+ <Keyword>BaseMemoryLib</Keyword>
+ </LibraryClass>
+ </LibraryClassDefinitions>
+ <SourceFiles>
+ <Filename>InternalSmbusLib.h</Filename>
+ <Filename>DxeSmbusLib.c</Filename>
+ <Filename>SmbusLib.c</Filename>
+ </SourceFiles>
+ <PackageDependencies>
+ <Package PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
+ </PackageDependencies>
+ <Protocols>
+ <Protocol Usage="ALWAYS_CONSUMED">
+ <ProtocolCName>gEfiSmbusProtocolGuid</ProtocolCName>
+ </Protocol>
+ </Protocols>
+ <Externs>
+ <Specification>EFI_SPECIFICATION_VERSION 0x00020000</Specification>
+ <Specification>EDK_RELEASE_VERSION 0x00020000</Specification>
+ <Extern>
+ <Constructor>SmbusLibConstructor</Constructor>
+ </Extern>
+ </Externs>
+</ModuleSurfaceArea>
\ No newline at end of file diff --git a/MdePkg/Library/DxeSmbusLib/InternalSmbusLib.h b/MdePkg/Library/DxeSmbusLib/InternalSmbusLib.h new file mode 100644 index 0000000000..01ea431351 --- /dev/null +++ b/MdePkg/Library/DxeSmbusLib/InternalSmbusLib.h @@ -0,0 +1,60 @@ +/** @file
+Internal header file for Smbus library.
+
+Copyright (c) 2006, Intel Corporation<BR>
+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.
+
+
+**/
+
+#ifndef __INTERNAL_SMBUS_LIB_H
+#define __INTERNAL_SMBUS_LIB_H
+
+#include <IndustryStandard/Smbus.h>
+
+#define SMBUS_LIB_SLAVE_ADDRESS(SmBusAddress) (((SmBusAddress) >> 1) & 0x7f)
+#define SMBUS_LIB_COMMAND(SmBusAddress) (((SmBusAddress) >> 8) & 0xff)
+#define SMBUS_LIB_LENGTH(SmBusAddress) (((SmBusAddress) >> 16) & 0x3f)
+#define SMBUS_LIB_PEC(SmBusAddress) ((BOOLEAN) (((SmBusAddress) & SMBUS_LIB_PEC_BIT) != 0))
+#define SMBUS_LIB_RESEARVED(SmBusAddress) ((SmBusAddress) & ~(((1 << 22) - 2) | SMBUS_LIB_PEC_BIT))
+
+//
+// Declaration for internal functions
+//
+/**
+ Executes an SMBus operation to an SMBus controller.
+
+ This function provides a standard way to execute Smbus script
+ as defined in the SmBus Specification. The data can either be of
+ the Length byte, word, or a block of data.
+
+ @param SmbusOperation Signifies which particular SMBus hardware protocol instance that it will use to
+ execute the SMBus transactions.
+ @param SmBusAddress Address that encodes the SMBUS Slave Address,
+ SMBUS Command, SMBUS Data Length, and PEC.
+ @param Length Signifies the number of bytes that this operation will do. The maximum number of
+ bytes can be revision specific and operation specific.
+ @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.
+ @param Status Return status for the executed command.
+ This is an optional parameter and may be NULL.
+
+ @return The actual number of bytes that are executed for this operation.
+
+**/
+UINTN
+InternalSmBusExec (
+ IN EFI_SMBUS_OPERATION SmbusOperation,
+ IN UINTN SmBusAddress,
+ IN UINTN Length,
+ IN OUT VOID *Buffer,
+ OUT RETURN_STATUS *Status OPTIONAL
+ );
+
+#endif
diff --git a/MdePkg/Library/DxeSmbusLib/SmbusLib.c b/MdePkg/Library/DxeSmbusLib/SmbusLib.c new file mode 100644 index 0000000000..93fadb6598 --- /dev/null +++ b/MdePkg/Library/DxeSmbusLib/SmbusLib.c @@ -0,0 +1,470 @@ +/** @file
+Implementation of SmBusLib class library for PEI phase.
+
+Copyright (c) 2006, Intel Corporation<BR>
+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: SmbusLib.c
+
+**/
+
+#include "InternalSmbusLib.h"
+
+/**
+ Executes an SMBUS quick read command.
+
+ Executes an SMBUS quick read command on the SMBUS device specified by SmBusAddress.
+ Only the SMBUS slave address field of SmBusAddress is required.
+ If Status is not NULL, then the status of the executed command is returned in Status.
+ If PEC is set in SmBusAddress, then ASSERT().
+ If Command in SmBusAddress is not zero, then ASSERT().
+ If Length in SmBusAddress is not zero, then ASSERT().
+ If any reserved bits of SmBusAddress are set, then ASSERT().
+
+ @param SmBusAddress Address that encodes the SMBUS Slave Address,
+ SMBUS Command, SMBUS Data Length, and PEC.
+ @param Status Return status for the executed command.
+ This is an optional parameter and may be NULL.
+
+**/
+VOID
+EFIAPI
+SmBusQuickRead (
+ IN UINTN SmBusAddress,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ ASSERT (!SMBUS_LIB_PEC (SmBusAddress));
+ ASSERT (SMBUS_LIB_COMMAND (SmBusAddress) == 0);
+ ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
+ ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
+
+ InternalSmBusExec (EfiSmbusQuickRead, SmBusAddress, 0, NULL, Status);
+}
+
+/**
+ Executes an SMBUS quick write command.
+
+ Executes an SMBUS quick write command on the SMBUS device specified by SmBusAddress.
+ Only the SMBUS slave address field of SmBusAddress is required.
+ If Status is not NULL, then the status of the executed command is returned in Status.
+ If PEC is set in SmBusAddress, then ASSERT().
+ If Command in SmBusAddress is not zero, then ASSERT().
+ If Length in SmBusAddress is not zero, then ASSERT().
+ If any reserved bits of SmBusAddress are set, then ASSERT().
+
+ @param SmBusAddress Address that encodes the SMBUS Slave Address,
+ SMBUS Command, SMBUS Data Length, and PEC.
+ @param Status Return status for the executed command.
+ This is an optional parameter and may be NULL.
+
+**/
+VOID
+EFIAPI
+SmBusQuickWrite (
+ IN UINTN SmBusAddress,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ ASSERT (!SMBUS_LIB_PEC (SmBusAddress));
+ ASSERT (SMBUS_LIB_COMMAND (SmBusAddress) == 0);
+ ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
+ ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
+
+ InternalSmBusExec (EfiSmbusQuickWrite, SmBusAddress, 0, NULL, Status);
+}
+
+/**
+ Executes an SMBUS receive byte command.
+
+ Executes an SMBUS receive byte command on the SMBUS device specified by SmBusAddress.
+ Only the SMBUS slave address field of SmBusAddress is required.
+ The byte received from the SMBUS is returned.
+ If Status is not NULL, then the status of the executed command is returned in Status.
+ If Command in SmBusAddress is not zero, then ASSERT().
+ If Length in SmBusAddress is not zero, then ASSERT().
+ If any reserved bits of SmBusAddress are set, then ASSERT().
+
+ @param SmBusAddress Address that encodes the SMBUS Slave Address,
+ SMBUS Command, SMBUS Data Length, and PEC.
+ @param Status Return status for the executed command.
+ This is an optional parameter and may be NULL.
+
+ @return The byte received from the SMBUS.
+
+**/
+UINT8
+EFIAPI
+SmBusReceiveByte (
+ IN UINTN SmBusAddress,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ UINT8 Byte;
+
+ ASSERT (SMBUS_LIB_COMMAND (SmBusAddress) == 0);
+ ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
+ ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
+
+ InternalSmBusExec (EfiSmbusReceiveByte, SmBusAddress, 1, &Byte, Status);
+
+ return Byte;
+}
+
+/**
+ Executes an SMBUS send byte command.
+
+ Executes an SMBUS send byte command on the SMBUS device specified by SmBusAddress.
+ The byte specified by Value is sent.
+ Only the SMBUS slave address field of SmBusAddress is required. Value is returned.
+ If Status is not NULL, then the status of the executed command is returned in Status.
+ If Command in SmBusAddress is not zero, then ASSERT().
+ If Length in SmBusAddress is not zero, then ASSERT().
+ If any reserved bits of SmBusAddress are set, then ASSERT().
+
+ @param SmBusAddress Address that encodes the SMBUS Slave Address,
+ SMBUS Command, SMBUS Data Length, and PEC.
+ @param Value The 8-bit value to send.
+ @param Status Return status for the executed command.
+ This is an optional parameter and may be NULL.
+
+ @return The parameter of Value.
+
+**/
+UINT8
+EFIAPI
+SmBusSendByte (
+ IN UINTN SmBusAddress,
+ IN UINT8 Value,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ UINT8 Byte;
+
+ ASSERT (SMBUS_LIB_COMMAND (SmBusAddress) == 0);
+ ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
+ ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
+
+ Byte = Value;
+ InternalSmBusExec (EfiSmbusSendByte, SmBusAddress, 1, &Byte, Status);
+
+ return Value;
+}
+
+/**
+ Executes an SMBUS read data byte command.
+
+ Executes an SMBUS read data byte command on the SMBUS device specified by SmBusAddress.
+ Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.
+ The 8-bit value read from the SMBUS is returned.
+ If Status is not NULL, then the status of the executed command is returned in Status.
+ If Length in SmBusAddress is not zero, then ASSERT().
+ If any reserved bits of SmBusAddress are set, then ASSERT().
+
+ @param SmBusAddress Address that encodes the SMBUS Slave Address,
+ SMBUS Command, SMBUS Data Length, and PEC.
+ @param Status Return status for the executed command.
+ This is an optional parameter and may be NULL.
+
+ @return The byte read from the SMBUS.
+
+**/
+UINT8
+EFIAPI
+SmBusReadDataByte (
+ IN UINTN SmBusAddress,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ UINT8 Byte;
+
+ ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
+ ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
+
+ InternalSmBusExec (EfiSmbusReadByte, SmBusAddress, 1, &Byte, Status);
+
+ return Byte;
+}
+
+/**
+ Executes an SMBUS write data byte command.
+
+ Executes an SMBUS write data byte command on the SMBUS device specified by SmBusAddress.
+ The 8-bit value specified by Value is written.
+ Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.
+ Value is returned.
+ If Status is not NULL, then the status of the executed command is returned in Status.
+ If Length in SmBusAddress is not zero, then ASSERT().
+ If any reserved bits of SmBusAddress are set, then ASSERT().
+
+ @param SmBusAddress Address that encodes the SMBUS Slave Address,
+ SMBUS Command, SMBUS Data Length, and PEC.
+ @param Value The 8-bit value to write.
+ @param Status Return status for the executed command.
+ This is an optional parameter and may be NULL.
+
+ @return The parameter of Value.
+
+**/
+UINT8
+EFIAPI
+SmBusWriteDataByte (
+ IN UINTN SmBusAddress,
+ IN UINT8 Value,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ UINT8 Byte;
+
+ ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
+ ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
+
+ Byte = Value;
+ InternalSmBusExec (EfiSmbusWriteByte, SmBusAddress, 1, &Byte, Status);
+
+ return Value;
+}
+
+/**
+ Executes an SMBUS read data word command.
+
+ Executes an SMBUS read data word command on the SMBUS device specified by SmBusAddress.
+ Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.
+ The 16-bit value read from the SMBUS is returned.
+ If Status is not NULL, then the status of the executed command is returned in Status.
+ If Length in SmBusAddress is not zero, then ASSERT().
+ If any reserved bits of SmBusAddress are set, then ASSERT().
+
+ @param SmBusAddress Address that encodes the SMBUS Slave Address,
+ SMBUS Command, SMBUS Data Length, and PEC.
+ @param Status Return status for the executed command.
+ This is an optional parameter and may be NULL.
+
+ @return The byte read from the SMBUS.
+
+**/
+UINT16
+EFIAPI
+SmBusReadDataWord (
+ IN UINTN SmBusAddress,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ UINT16 Word;
+
+ ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
+ ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
+
+ InternalSmBusExec (EfiSmbusReadWord, SmBusAddress, 2, &Word, Status);
+
+ return Word;
+}
+
+/**
+ Executes an SMBUS write data word command.
+
+ Executes an SMBUS write data word command on the SMBUS device specified by SmBusAddress.
+ The 16-bit value specified by Value is written.
+ Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.
+ Value is returned.
+ If Status is not NULL, then the status of the executed command is returned in Status.
+ If Length in SmBusAddress is not zero, then ASSERT().
+ If any reserved bits of SmBusAddress are set, then ASSERT().
+
+ @param SmBusAddress Address that encodes the SMBUS Slave Address,
+ SMBUS Command, SMBUS Data Length, and PEC.
+ @param Value The 16-bit value to write.
+ @param Status Return status for the executed command.
+ This is an optional parameter and may be NULL.
+
+ @return The parameter of Value.
+
+**/
+UINT16
+EFIAPI
+SmBusWriteDataWord (
+ IN UINTN SmBusAddress,
+ IN UINT16 Value,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ UINT16 Word;
+
+ ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
+ ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
+
+ Word = Value;
+ InternalSmBusExec (EfiSmbusWriteWord, SmBusAddress, 2, &Word, Status);
+
+ return Value;
+}
+
+/**
+ Executes an SMBUS process call command.
+
+ Executes an SMBUS process call command on the SMBUS device specified by SmBusAddress.
+ The 16-bit value specified by Value is written.
+ Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.
+ The 16-bit value returned by the process call command is returned.
+ If Status is not NULL, then the status of the executed command is returned in Status.
+ If Length in SmBusAddress is not zero, then ASSERT().
+ If any reserved bits of SmBusAddress are set, then ASSERT().
+
+ @param SmBusAddress Address that encodes the SMBUS Slave Address,
+ SMBUS Command, SMBUS Data Length, and PEC.
+ @param Value The 16-bit value to write.
+ @param Status Return status for the executed command.
+ This is an optional parameter and may be NULL.
+
+ @return The 16-bit value returned by the process call command.
+
+**/
+UINT16
+EFIAPI
+SmBusProcessCall (
+ IN UINTN SmBusAddress,
+ IN UINT16 Value,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
+ ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
+
+ InternalSmBusExec (EfiSmbusProcessCall, SmBusAddress, 2, &Value, Status);
+
+ return Value;
+}
+
+/**
+ Executes an SMBUS read block command.
+
+ Executes an SMBUS read block command on the SMBUS device specified by SmBusAddress.
+ Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.
+ Bytes are read from the SMBUS and stored in Buffer.
+ The number of bytes read is returned, and will never return a value larger than 32-bytes.
+ If Status is not NULL, then the status of the executed command is returned in Status.
+ It is the caller's responsibility to make sure Buffer is large enough for the total number of bytes read.
+ SMBUS supports a maximum transfer size of 32 bytes, so Buffer does not need to be any larger than 32 bytes.
+ If Length in SmBusAddress is not zero, then ASSERT().
+ If Buffer is NULL, then ASSERT().
+ If any reserved bits of SmBusAddress are set, then ASSERT().
+
+ @param SmBusAddress Address that encodes the SMBUS Slave Address,
+ SMBUS Command, SMBUS Data Length, and PEC.
+ @param Buffer Pointer to the buffer to store the bytes read from the SMBUS.
+ @param Status Return status for the executed command.
+ This is an optional parameter and may be NULL.
+
+ @return The number of bytes read.
+
+**/
+UINTN
+EFIAPI
+SmBusReadBlock (
+ IN UINTN SmBusAddress,
+ OUT VOID *Buffer,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ ASSERT (Buffer != NULL);
+ ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
+ ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
+
+ return InternalSmBusExec (EfiSmbusReadBlock, SmBusAddress, 0x20, Buffer, Status);
+}
+
+/**
+ Executes an SMBUS write block command.
+
+ Executes an SMBUS write block command on the SMBUS device specified by SmBusAddress.
+ The SMBUS slave address, SMBUS command, and SMBUS length fields of SmBusAddress are required.
+ Bytes are written to the SMBUS from Buffer.
+ The number of bytes written is returned, and will never return a value larger than 32-bytes.
+ If Status is not NULL, then the status of the executed command is returned in Status.
+ If Length in SmBusAddress is zero or greater than 32, then ASSERT().
+ If Buffer is NULL, then ASSERT().
+ If any reserved bits of SmBusAddress are set, then ASSERT().
+
+ @param SmBusAddress Address that encodes the SMBUS Slave Address,
+ SMBUS Command, SMBUS Data Length, and PEC.
+ @param Buffer Pointer to the buffer to store the bytes read from the SMBUS.
+ @param Status Return status for the executed command.
+ This is an optional parameter and may be NULL.
+
+ @return The number of bytes written.
+
+**/
+UINTN
+EFIAPI
+SmBusWriteBlock (
+ IN UINTN SmBusAddress,
+ OUT VOID *Buffer,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ UINTN Length;
+
+ ASSERT (Buffer != NULL);
+ ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) >= 1);
+ ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) <= 32);
+ ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
+
+ Length = SMBUS_LIB_LENGTH (SmBusAddress);
+ return InternalSmBusExec (EfiSmbusWriteBlock, SmBusAddress, Length, Buffer, Status);
+}
+
+/**
+ Executes an SMBUS block process call command.
+
+ Executes an SMBUS block process call command on the SMBUS device specified by SmBusAddress.
+ The SMBUS slave address, SMBUS command, and SMBUS length fields of SmBusAddress are required.
+ Bytes are written to the SMBUS from WriteBuffer. Bytes are then read from the SMBUS into ReadBuffer.
+ If Status is not NULL, then the status of the executed command is returned in Status.
+ It is the caller's responsibility to make sure ReadBuffer is large enough for the total number of bytes read.
+ SMBUS supports a maximum transfer size of 32 bytes, so Buffer does not need to be any larger than 32 bytes.
+ If Length in SmBusAddress is zero or greater than 32, then ASSERT().
+ If WriteBuffer is NULL, then ASSERT().
+ If ReadBuffer is NULL, then ASSERT().
+ If any reserved bits of SmBusAddress are set, then ASSERT().
+
+ @param SmBusAddress Address that encodes the SMBUS Slave Address,
+ SMBUS Command, SMBUS Data Length, and PEC.
+ @param WriteBuffer Pointer to the buffer of bytes to write to the SMBUS.
+ @param ReadBuffer Pointer to the buffer of bytes to read from the SMBUS.
+ @param Status Return status for the executed command.
+ This is an optional parameter and may be NULL.
+
+ @return The number of bytes written.
+
+**/
+UINTN
+EFIAPI
+SmBusBlockProcessCall (
+ IN UINTN SmBusAddress,
+ IN VOID *WriteBuffer,
+ OUT VOID *ReadBuffer,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ UINTN Length;
+
+ ASSERT (WriteBuffer != NULL);
+ ASSERT (ReadBuffer != NULL);
+ ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) >= 1);
+ ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) <= 32);
+ ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
+
+ Length = SMBUS_LIB_LENGTH (SmBusAddress);
+ //
+ // Assuming that ReadBuffer is large enough to save another memory copy.
+ //
+ ReadBuffer = CopyMem (ReadBuffer, WriteBuffer, Length);
+ return InternalSmBusExec (EfiSmbusBWBRProcessCall, SmBusAddress, Length, ReadBuffer, Status);
+}
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