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Diffstat (limited to 'Core/MdePkg/Library/BaseS3SmbusLib/S3SmbusLib.c')
| -rw-r--r-- | Core/MdePkg/Library/BaseS3SmbusLib/S3SmbusLib.c | 502 |
1 files changed, 502 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseS3SmbusLib/S3SmbusLib.c b/Core/MdePkg/Library/BaseS3SmbusLib/S3SmbusLib.c new file mode 100644 index 0000000000..1a7e0aef64 --- /dev/null +++ b/Core/MdePkg/Library/BaseS3SmbusLib/S3SmbusLib.c @@ -0,0 +1,502 @@ +/** @file
+ Smbus Library Services that do SMBus transactions and also enable the operatation
+ to be replayed during an S3 resume. This library class maps directly on top
+ of the SmbusLib class.
+
+ Copyright (c) 2007, 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.
+
+**/
+
+
+#include <Base.h>
+
+#include <Library/DebugLib.h>
+#include <Library/S3BootScriptLib.h>
+#include <Library/SmbusLib.h>
+#include <Library/S3SmbusLib.h>
+
+/**
+ Saves an SMBus operation to S3 script to be replayed on S3 resume.
+
+ This function provides a standard way to save SMBus operation to S3 boot Script.
+ The data can either be of the Length byte, word, or a block of data.
+ If it falis to save S3 boot script, then ASSERT ().
+
+ @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.
+
+**/
+VOID
+InternalSaveSmBusExecToBootScript (
+ IN EFI_SMBUS_OPERATION SmbusOperation,
+ IN UINTN SmBusAddress,
+ IN UINTN Length,
+ IN OUT VOID *Buffer
+ )
+{
+ RETURN_STATUS Status;
+
+ Status = S3BootScriptSaveSmbusExecute (
+ SmBusAddress,
+ SmbusOperation,
+ &Length,
+ Buffer
+ );
+ ASSERT (Status == RETURN_SUCCESS);
+}
+
+/**
+ Executes an SMBUS quick read command and saves the value in the S3 script to be replayed
+ on S3 resume.
+
+ 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
+S3SmBusQuickRead (
+ IN UINTN SmBusAddress,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ SmBusQuickRead (SmBusAddress, Status);
+
+ InternalSaveSmBusExecToBootScript (EfiSmbusQuickRead, SmBusAddress, 0, NULL);
+}
+
+/**
+ Executes an SMBUS quick write command and saves the value in the S3 script to be replayed
+ on S3 resume.
+
+ 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
+S3SmBusQuickWrite (
+ IN UINTN SmBusAddress,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ SmBusQuickWrite (SmBusAddress, Status);
+
+ InternalSaveSmBusExecToBootScript (EfiSmbusQuickWrite, SmBusAddress, 0, NULL);
+}
+
+/**
+ Executes an SMBUS receive byte command and saves the value in the S3 script to be replayed
+ on S3 resume.
+
+ 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
+S3SmBusReceiveByte (
+ IN UINTN SmBusAddress,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ UINT8 Byte;
+
+ Byte = SmBusReceiveByte (SmBusAddress, Status);
+
+ InternalSaveSmBusExecToBootScript (EfiSmbusReceiveByte, SmBusAddress, 1, &Byte);
+
+ return Byte;
+}
+
+/**
+ Executes an SMBUS send byte command and saves the value in the S3 script to be replayed
+ on S3 resume.
+
+ 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
+S3SmBusSendByte (
+ IN UINTN SmBusAddress,
+ IN UINT8 Value,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ UINT8 Byte;
+
+ Byte = SmBusSendByte (SmBusAddress, Value, Status);
+
+ InternalSaveSmBusExecToBootScript (EfiSmbusSendByte, SmBusAddress, 1, &Byte);
+
+ return Byte;
+}
+
+/**
+ Executes an SMBUS read data byte command and saves the value in the S3 script to be replayed
+ on S3 resume.
+
+ 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
+S3SmBusReadDataByte (
+ IN UINTN SmBusAddress,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ UINT8 Byte;
+
+ Byte = SmBusReadDataByte (SmBusAddress, Status);
+
+ InternalSaveSmBusExecToBootScript (EfiSmbusReadByte, SmBusAddress, 1, &Byte);
+
+ return Byte;
+}
+
+/**
+ Executes an SMBUS write data byte command and saves the value in the S3 script to be replayed
+ on S3 resume.
+
+ 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
+S3SmBusWriteDataByte (
+ IN UINTN SmBusAddress,
+ IN UINT8 Value,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ UINT8 Byte;
+
+ Byte = SmBusWriteDataByte (SmBusAddress, Value, Status);
+
+ InternalSaveSmBusExecToBootScript (EfiSmbusWriteByte, SmBusAddress, 1, &Byte);
+
+ return Byte;
+}
+
+/**
+ Executes an SMBUS read data word command and saves the value in the S3 script to be replayed
+ on S3 resume.
+
+ 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
+S3SmBusReadDataWord (
+ IN UINTN SmBusAddress,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ UINT16 Word;
+
+ Word = SmBusReadDataWord (SmBusAddress, Status);
+
+ InternalSaveSmBusExecToBootScript (EfiSmbusReadWord, SmBusAddress, 2, &Word);
+
+ return Word;
+}
+
+/**
+ Executes an SMBUS write data word command and saves the value in the S3 script to be replayed
+ on S3 resume.
+
+ 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
+S3SmBusWriteDataWord (
+ IN UINTN SmBusAddress,
+ IN UINT16 Value,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ UINT16 Word;
+
+ Word = SmBusWriteDataWord (SmBusAddress, Value, Status);
+
+ InternalSaveSmBusExecToBootScript (EfiSmbusWriteWord, SmBusAddress, 2, &Word);
+
+ return Word;
+}
+
+/**
+ Executes an SMBUS process call command and saves the value in the S3 script to be replayed
+ on S3 resume.
+
+ 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
+S3SmBusProcessCall (
+ IN UINTN SmBusAddress,
+ IN UINT16 Value,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ UINT16 Word;
+
+ Word = SmBusProcessCall (SmBusAddress, Value, Status);
+
+ InternalSaveSmBusExecToBootScript (EfiSmbusProcessCall, SmBusAddress, 2, &Value);
+
+ return Word;
+}
+
+/**
+ Executes an SMBUS read block command and saves the value in the S3 script to be replayed
+ on S3 resume.
+
+ 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
+S3SmBusReadBlock (
+ IN UINTN SmBusAddress,
+ OUT VOID *Buffer,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ UINTN Length;
+
+ Length = SmBusReadBlock (SmBusAddress, Buffer, Status);
+
+ InternalSaveSmBusExecToBootScript (EfiSmbusReadBlock, SmBusAddress, Length, Buffer);
+
+ return Length;
+}
+
+/**
+ Executes an SMBUS write block command and saves the value in the S3 script to be replayed
+ on S3 resume.
+
+ 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
+S3SmBusWriteBlock (
+ IN UINTN SmBusAddress,
+ OUT VOID *Buffer,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ UINTN Length;
+
+ Length = SmBusWriteBlock (SmBusAddress, Buffer, Status);
+
+ InternalSaveSmBusExecToBootScript (EfiSmbusWriteBlock, SmBusAddress, SMBUS_LIB_LENGTH (SmBusAddress), Buffer);
+
+ return Length;
+}
+
+/**
+ Executes an SMBUS block process call command and saves the value in the S3 script to be replayed
+ on S3 resume.
+
+ 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
+S3SmBusBlockProcessCall (
+ IN UINTN SmBusAddress,
+ IN VOID *WriteBuffer,
+ OUT VOID *ReadBuffer,
+ OUT RETURN_STATUS *Status OPTIONAL
+ )
+{
+ UINTN Length;
+
+ Length = SmBusBlockProcessCall (SmBusAddress, WriteBuffer, ReadBuffer, Status);
+
+ InternalSaveSmBusExecToBootScript (EfiSmbusBWBRProcessCall, SmBusAddress, SMBUS_LIB_LENGTH (SmBusAddress), ReadBuffer);
+
+ return Length;
+}
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