413 lines
12 KiB
C
413 lines
12 KiB
C
/******************************************************************************
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* Copyright (c) 2014 - 2021 Xilinx, Inc. All rights reserved.
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* SPDX-License-Identifier: MIT
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******************************************************************************/
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/*****************************************************************************/
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/**
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*
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* @file xil_io.h
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*
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* @addtogroup common_io_interfacing_apis Register IO interfacing APIs
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*
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* The xil_io.h file contains the interface for the general I/O component, which
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* encapsulates the Input/Output functions for the processors that do not
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* require any special I/O handling.
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*
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* @{
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* <pre>
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* MODIFICATION HISTORY:
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*
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* Ver Who Date Changes
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* ----- -------- -------- -----------------------------------------------
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* 5.00 pkp 05/29/14 First release
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* 6.00 mus 08/19/16 Remove checking of __LITTLE_ENDIAN__ flag for
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* ARM processors
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* 7.20 har 01/03/20 Added Xil_SecureOut32 for avoiding blindwrite for
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* CR-1049218
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* 7.30 kpt 09/21/20 Moved Xil_EndianSwap16 and Xil_EndianSwap32 to
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* xil_io.h and made them as static inline
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* am 10/13/20 Changed the return type of Xil_SecureOut32 function
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* from u32 to int
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* 7.50 dp 02/12/21 Fix compilation error in Xil_EndianSwap32() that occur
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* when -Werror=conversion compiler flag is enabled
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* 7.5 mus 05/17/21 Update the functions with comments. It fixes CR#1067739.
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*
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* </pre>
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******************************************************************************/
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#ifndef XIL_IO_H /* prevent circular inclusions */
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#define XIL_IO_H /* by using protection macros */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/***************************** Include Files *********************************/
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#include "xil_types.h"
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//#include "xil_printf.h"
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#include "xstatus.h"
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#if defined (__MICROBLAZE__)
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#include "mb_interface.h"
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#else
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//#include "xpseudo_asm.h"
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#endif
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/************************** Function Prototypes ******************************/
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#ifdef ENABLE_SAFETY
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extern u32 XStl_RegUpdate(u32 RegAddr, u32 RegVal);
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#endif
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/***************** Macros (Inline Functions) Definitions *********************/
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#if defined __GNUC__
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#if defined (__MICROBLAZE__)
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# define INST_SYNC mbar(0)
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# define DATA_SYNC mbar(1)
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# else
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# define SYNCHRONIZE_IO dmb()
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# define INST_SYNC isb()
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# define DATA_SYNC dsb()
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# endif
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#else
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# define SYNCHRONIZE_IO
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# define INST_SYNC
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# define DATA_SYNC
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# define INST_SYNC
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# define DATA_SYNC
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#endif
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#if defined (__GNUC__) || defined (__ICCARM__) || defined (__MICROBLAZE__)
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#define INLINE inline
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#else
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#define INLINE __inline
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#endif
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/*****************************************************************************/
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/**
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*
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* @brief Performs an input operation for a memory location by reading
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* from the specified address and returning the 8 bit Value read from
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* that address.
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*
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* @param Addr: contains the address to perform the input operation
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*
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* @return The 8 bit Value read from the specified input address.
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*
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******************************************************************************/
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static INLINE u8 Xil_In8(UINTPTR Addr)
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{
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return *(volatile u8 *) Addr;
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}
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/*****************************************************************************/
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/**
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*
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* @brief Performs an input operation for a memory location by reading from
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* the specified address and returning the 16 bit Value read from that
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* address.
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*
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* @param Addr: contains the address to perform the input operation
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*
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* @return The 16 bit Value read from the specified input address.
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*
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******************************************************************************/
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static INLINE u16 Xil_In16(UINTPTR Addr)
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{
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return *(volatile u16 *) Addr;
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}
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/*****************************************************************************/
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/**
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*
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* @brief Performs an input operation for a memory location by
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* reading from the specified address and returning the 32 bit Value
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* read from that address.
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*
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* @param Addr: contains the address to perform the input operation
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*
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* @return The 32 bit Value read from the specified input address.
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*
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******************************************************************************/
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static INLINE u32 Xil_In32(UINTPTR Addr)
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{
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return *(volatile u32 *) Addr;
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}
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/*****************************************************************************/
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/**
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*
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* @brief Performs an input operation for a memory location by reading the
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* 64 bit Value read from that address.
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*
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*
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* @param Addr: contains the address to perform the input operation
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*
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* @return The 64 bit Value read from the specified input address.
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*
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******************************************************************************/
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static INLINE u64 Xil_In64(UINTPTR Addr)
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{
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return *(volatile u64 *) Addr;
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}
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/*****************************************************************************/
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/**
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*
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* @brief Performs an output operation for an memory location by
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* writing the 8 bit Value to the the specified address.
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*
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* @param Addr: contains the address to perform the output operation
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* @param Value: contains the 8 bit Value to be written at the specified
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* address.
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*
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* @return None.
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*
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******************************************************************************/
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static INLINE void Xil_Out8(UINTPTR Addr, u8 Value)
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{
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/* write 8 bit value to specified address */
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volatile u8 *LocalAddr = (volatile u8 *)Addr;
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*LocalAddr = Value;
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}
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/*****************************************************************************/
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/**
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*
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* @brief Performs an output operation for a memory location by writing the
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* 16 bit Value to the the specified address.
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*
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* @param Addr contains the address to perform the output operation
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* @param Value contains the Value to be written at the specified address.
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*
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* @return None.
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*
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******************************************************************************/
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static INLINE void Xil_Out16(UINTPTR Addr, u16 Value)
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{
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/* write 16 bit value to specified address */
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volatile u16 *LocalAddr = (volatile u16 *)Addr;
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*LocalAddr = Value;
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}
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/*****************************************************************************/
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/**
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*
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* @brief Performs an output operation for a memory location by writing the
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* 32 bit Value to the the specified address.
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*
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* @param Addr contains the address to perform the output operation
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* @param Value contains the 32 bit Value to be written at the specified
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* address.
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*
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* @return None.
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*
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******************************************************************************/
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static INLINE void Xil_Out32(UINTPTR Addr, u32 Value)
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{
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/* write 32 bit value to specified address */
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#ifndef ENABLE_SAFETY
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volatile u32 *LocalAddr = (volatile u32 *)Addr;
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*LocalAddr = Value;
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#else
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XStl_RegUpdate(Addr, Value);
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#endif
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}
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/*****************************************************************************/
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/**
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*
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* @brief Performs an output operation for a memory location by writing the
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* 64 bit Value to the the specified address.
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*
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* @param Addr contains the address to perform the output operation
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* @param Value contains 64 bit Value to be written at the specified address.
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*
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* @return None.
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*
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******************************************************************************/
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static INLINE void Xil_Out64(UINTPTR Addr, u64 Value)
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{
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/* write 64 bit value to specified address */
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volatile u64 *LocalAddr = (volatile u64 *)Addr;
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*LocalAddr = Value;
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}
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/*****************************************************************************/
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/**
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*
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* @brief Performs an output operation for a memory location by writing the
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* 32 bit Value to the the specified address and then reading it
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* back to verify the value written in the register.
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*
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* @param Addr contains the address to perform the output operation
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* @param Value contains 32 bit Value to be written at the specified address
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*
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* @return Returns Status
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* - XST_SUCCESS on success
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* - XST_FAILURE on failure
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*
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*****************************************************************************/
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static INLINE int Xil_SecureOut32(UINTPTR Addr, u32 Value)
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{
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int Status = XST_FAILURE;
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u32 ReadReg;
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u32 ReadRegTemp;
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/* writing 32 bit value to specified address */
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Xil_Out32(Addr, Value);
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/* verify value written to specified address with multiple reads */
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ReadReg = Xil_In32(Addr);
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ReadRegTemp = Xil_In32(Addr);
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if( (ReadReg == Value) && (ReadRegTemp == Value) ) {
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Status = XST_SUCCESS;
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}
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return Status;
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}
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/*****************************************************************************/
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/**
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*
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* @brief Perform a 16-bit endian conversion.
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*
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* @param Data: 16 bit value to be converted
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*
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* @return 16 bit Data with converted endianness
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*
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******************************************************************************/
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static INLINE __attribute__((always_inline)) u16 Xil_EndianSwap16(u16 Data)
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{
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return (u16) (((Data & 0xFF00U) >> 8U) | ((Data & 0x00FFU) << 8U));
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}
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/*****************************************************************************/
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/**
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*
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* @brief Perform a 32-bit endian conversion.
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*
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* @param Data: 32 bit value to be converted
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*
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* @return 32 bit data with converted endianness
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*
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******************************************************************************/
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static INLINE __attribute__((always_inline)) u32 Xil_EndianSwap32(u32 Data)
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{
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u16 LoWord;
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u16 HiWord;
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/* get each of the half words from the 32 bit word */
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LoWord = (u16) (Data & 0x0000FFFFU);
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HiWord = (u16) ((Data & 0xFFFF0000U) >> 16U);
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/* byte swap each of the 16 bit half words */
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LoWord = (u16)(((LoWord & 0xFF00U) >> 8U) | ((LoWord & 0x00FFU) << 8U));
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HiWord = (u16)(((HiWord & 0xFF00U) >> 8U) | ((HiWord & 0x00FFU) << 8U));
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/* swap the half words before returning the value */
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return ((((u32)LoWord) << (u32)16U) | (u32)HiWord);
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}
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#if defined (__MICROBLAZE__)
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#ifdef __LITTLE_ENDIAN__
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# define Xil_In16LE Xil_In16
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# define Xil_In32LE Xil_In32
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# define Xil_Out16LE Xil_Out16
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# define Xil_Out32LE Xil_Out32
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# define Xil_Htons Xil_EndianSwap16
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# define Xil_Htonl Xil_EndianSwap32
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# define Xil_Ntohs Xil_EndianSwap16
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# define Xil_Ntohl Xil_EndianSwap32
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# else
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# define Xil_In16BE Xil_In16
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# define Xil_In32BE Xil_In32
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# define Xil_Out16BE Xil_Out16
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# define Xil_Out32BE Xil_Out32
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# define Xil_Htons(Data) (Data)
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# define Xil_Htonl(Data) (Data)
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# define Xil_Ntohs(Data) (Data)
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# define Xil_Ntohl(Data) (Data)
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#endif
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#else
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# define Xil_In16LE Xil_In16
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# define Xil_In32LE Xil_In32
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# define Xil_Out16LE Xil_Out16
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# define Xil_Out32LE Xil_Out32
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# define Xil_Htons Xil_EndianSwap16
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# define Xil_Htonl Xil_EndianSwap32
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# define Xil_Ntohs Xil_EndianSwap16
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# define Xil_Ntohl Xil_EndianSwap32
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#endif
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#if defined (__MICROBLAZE__)
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#ifdef __LITTLE_ENDIAN__
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static INLINE u16 Xil_In16BE(UINTPTR Addr)
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#else
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static INLINE u16 Xil_In16LE(UINTPTR Addr)
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#endif
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#else
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static INLINE u16 Xil_In16BE(UINTPTR Addr)
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#endif
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{
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u16 value = Xil_In16(Addr);
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return Xil_EndianSwap16(value);
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}
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#if defined (__MICROBLAZE__)
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#ifdef __LITTLE_ENDIAN__
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static INLINE u32 Xil_In32BE(UINTPTR Addr)
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#else
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static INLINE u32 Xil_In32LE(UINTPTR Addr)
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#endif
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#else
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static INLINE u32 Xil_In32BE(UINTPTR Addr)
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#endif
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{
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u32 value = Xil_In32(Addr);
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return Xil_EndianSwap32(value);
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}
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#if defined (__MICROBLAZE__)
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#ifdef __LITTLE_ENDIAN__
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static INLINE void Xil_Out16BE(UINTPTR Addr, u16 Value)
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#else
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static INLINE void Xil_Out16LE(UINTPTR Addr, u16 Value)
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#endif
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#else
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static INLINE void Xil_Out16BE(UINTPTR Addr, u16 Value)
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#endif
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{
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Value = Xil_EndianSwap16(Value);
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Xil_Out16(Addr, Value);
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}
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#if defined (__MICROBLAZE__)
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#ifdef __LITTLE_ENDIAN__
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static INLINE void Xil_Out32BE(UINTPTR Addr, u32 Value)
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#else
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static INLINE void Xil_Out32LE(UINTPTR Addr, u32 Value)
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#endif
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#else
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static INLINE void Xil_Out32BE(UINTPTR Addr, u32 Value)
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#endif
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{
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Value = Xil_EndianSwap32(Value);
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Xil_Out32(Addr, Value);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* end of protection macro */
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/**
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* @} End of "addtogroup common_io_interfacing_apis".
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*/
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