diff options
Diffstat (limited to 'ReferenceCode/Haswell/SampleCode/Library/SmmIo/SmmIo.c')
-rw-r--r-- | ReferenceCode/Haswell/SampleCode/Library/SmmIo/SmmIo.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/ReferenceCode/Haswell/SampleCode/Library/SmmIo/SmmIo.c b/ReferenceCode/Haswell/SampleCode/Library/SmmIo/SmmIo.c new file mode 100644 index 0000000..9f1e19d --- /dev/null +++ b/ReferenceCode/Haswell/SampleCode/Library/SmmIo/SmmIo.c @@ -0,0 +1,169 @@ +/** @file + SMM I/O access utility implementation file, for Ia32 + +@copyright + Copyright (c) 1999 - 2013 Intel Corporation. All rights reserved + This software and associated documentation (if any) is furnished + under a license and may only be used or copied in accordance + with the terms of the license. Except as permitted by such + license, no part of this software or documentation may be + reproduced, stored in a retrieval system, or transmitted in any + form or by any means without the express written consent of + Intel Corporation. + This file contains a 'Sample Driver' and is licensed as such + under the terms of your license agreement with Intel or your + vendor. This file may be modified by the user, subject to + the additional terms of the license agreement +**/ + +/// +/// Include files +/// +#include "SmmIoLib.h" + +/** + Do a one byte IO read + + @param[in] Address - IO address to read + + @retval Data read +**/ +UINT8 +SmmIoRead8 ( + IN UINT16 Address + ) +{ + UINT8 Buffer; + + ASSERT (mSmst); + + mSmst->SmmIo.Io.Read ( + &mSmst->SmmIo, + SMM_IO_UINT8, + Address, + 1, + &Buffer + ); + return Buffer; +} + +/** + Do a one byte IO write + + @param[in] Address - IO address to write + @param[in] Data - Data to write +**/ +VOID +SmmIoWrite8 ( + IN UINT16 Address, + IN UINT8 Data + ) +{ + ASSERT (mSmst); + + mSmst->SmmIo.Io.Write ( + &mSmst->SmmIo, + SMM_IO_UINT8, + Address, + 1, + &Data + ); +} + +/** + Do a two byte IO read + + @param[in] Address - IO address to read + + @retval Data read +**/ +UINT16 +SmmIoRead16 ( + IN UINT16 Address + ) +{ + UINT16 Buffer; + + ASSERT (mSmst); + + mSmst->SmmIo.Io.Read ( + &mSmst->SmmIo, + SMM_IO_UINT16, + Address, + 1, + &Buffer + ); + return Buffer; +} + +/** + Do a two byte IO write + + @param[in] Address - IO address to write + @param[in] Data - Data to write +**/ +VOID +SmmIoWrite16 ( + IN UINT16 Address, + IN UINT16 Data + ) +{ + ASSERT (mSmst); + + mSmst->SmmIo.Io.Write ( + &mSmst->SmmIo, + SMM_IO_UINT16, + Address, + 1, + &Data + ); +} + +/** + Do a four byte IO read + + @param[in] Address - IO address to read + + @retval Data read +**/ +UINT32 +SmmIoRead32 ( + IN UINT16 Address + ) +{ + UINT32 Buffer; + + ASSERT (mSmst); + + mSmst->SmmIo.Io.Read ( + &mSmst->SmmIo, + SMM_IO_UINT32, + Address, + 1, + &Buffer + ); + return Buffer; +} + +/** + Do a four byte IO write + + @param[in] Address - IO address to write + @param[in] Data - Data to write +**/ +VOID +SmmIoWrite32 ( + IN UINT16 Address, + IN UINT32 Data + ) +{ + ASSERT (mSmst); + + mSmst->SmmIo.Io.Write ( + &mSmst->SmmIo, + SMM_IO_UINT32, + Address, + 1, + &Data + ); +} |