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[/] [1g_ethernet_dpi/] [trunk/] [sw/] [dev/] [test_main/] [src/] [_hdl/] [bsp/] [libsrc/] [standalone_v5_3/] [src/] [xil_io.c] - Rev 4
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/****************************************************************************** * * Copyright (C) 2009 - 2014 Xilinx, Inc. All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * Use of the Software is limited solely to applications: * (a) running on a Xilinx device, or * (b) that interact with a Xilinx device through a bus or interconnect. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * XILINX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * * Except as contained in this notice, the name of the Xilinx shall not be used * in advertising or otherwise to promote the sale, use or other dealings in * this Software without prior written authorization from Xilinx. * ******************************************************************************/ /*****************************************************************************/ /** * * @file xil_io.c * * Contains I/O functions for memory-mapped architectures. These functions * encapsulate generic CPU I/O requirements. * * <pre> * MODIFICATION HISTORY: * * Ver Who Date Changes * ----- ---- -------- ------------------------------------------------------- * 3.00a hbm 07/28/09 Initial release * 3.00a hbm 07/21/10 Added Xil_EndianSwap32/16, Xil_Htonl/s, Xil_Ntohl/s * * </pre> * * @note * * This file may contain architecture-dependent code. * ******************************************************************************/ /***************************** Include Files *********************************/ #include "xil_io.h" #include "xil_types.h" /************************** Constant Definitions *****************************/ /**************************** Type Definitions *******************************/ /***************** Macros (Inline Functions) Definitions *********************/ /************************** Function Prototypes ******************************/ /***************** Macros (Inline Functions) and Functions Definitions *******/ /*****************************************************************************/ /** * * Perform an input operation for an 8-bit memory location by reading from the * specified address and returning the value read from that address. * * @param Addr contains the address to perform the input operation at. * * @return The value read from the specified input address. * * @note None. * ******************************************************************************/ u8 Xil_In8(u32 Addr) { // return *(volatile u8 *)Addr; return( (u8)(axi_read_(Addr, 0x01)) ); } /*****************************************************************************/ /** * * Perform an input operation for a 16-bit memory location by reading from the * specified address and returning the value read from that address. * * @param Addr contains the address to perform the input operation at. * * @return The value read from the specified input address. * * @note None. * ******************************************************************************/ u16 Xil_In16(u32 Addr) { // return *(volatile u16 *)Addr; return( (u16)(axi_read_(Addr, 0x03)) ); } /*****************************************************************************/ /** * * Performs an input operation for a 32-bit memory location by reading from the * specified address and returning the Value read from that address. * * @param Addr contains the address to perform the input operation at. * * @return The value read from the specified input address. * * @note None. * ******************************************************************************/ u32 Xil_In32(u32 Addr) { // return *(volatile u32 *)Addr; return( (u32)(axi_read_(Addr, 0x0F)) ); } /*****************************************************************************/ /** * * Perform an output operation for an 8-bit memory location by writing the * specified value to the specified address. * * @param Addr contains the address to perform the output operation at. * @param value contains the value to be output at the specified address. * * @return None * * @note None. * ******************************************************************************/ void Xil_Out8(u32 Addr, u8 Value) { // u8 *LocalAddr = (u8 *)Addr; // *LocalAddr = Value; axi_write(Addr, 0x01 , Value); } /*****************************************************************************/ /** * * Perform an output operation for a 16-bit memory location by writing the * specified value to the specified address. * * @param Addr contains the address to perform the output operation at. * @param value contains the value to be output at the specified address. * * @return None * * @note None. * ******************************************************************************/ void Xil_Out16(u32 Addr, u16 Value) { // u16 *LocalAddr = (u16 *)Addr; // *LocalAddr = Value; axi_write(Addr, 0x03, Value); } /*****************************************************************************/ /** * * Perform an output operation for a 32-bit memory location by writing the * specified value to the specified address. * * @param addr contains the address to perform the output operation at. * @param value contains the value to be output at the specified address. * * @return None * * @note None. * ******************************************************************************/ void Xil_Out32(u32 Addr, u32 Value) { // u32 *LocalAddr = (u32 *)Addr; // *LocalAddr = Value; axi_write(Addr, 0x0F, Value); } /*****************************************************************************/ /** * * Perform a 16-bit endian converion. * * @param Data contains the value to be converted. * * @return converted value. * * @note None. * ******************************************************************************/ u16 Xil_EndianSwap16(u16 Data) { return (u16) (((Data & 0xFF00U) >> 8U) | ((Data & 0x00FFU) << 8U)); } /*****************************************************************************/ /** * * Perform a 32-bit endian converion. * * @param Data contains the value to be converted. * * @return converted value. * * @note None. * ******************************************************************************/ u32 Xil_EndianSwap32(u32 Data) { u16 LoWord; u16 HiWord; /* get each of the half words from the 32 bit word */ LoWord = (u16) (Data & 0x0000FFFFU); HiWord = (u16) ((Data & 0xFFFF0000U) >> 16U); /* byte swap each of the 16 bit half words */ LoWord = (((LoWord & 0xFF00U) >> 8U) | ((LoWord & 0x00FFU) << 8U)); HiWord = (((HiWord & 0xFF00U) >> 8U) | ((HiWord & 0x00FFU) << 8U)); /* swap the half words before returning the value */ return ((((u32)LoWord) << (u32)16U) | (u32)HiWord); } /*****************************************************************************/ /** * * Perform a little-endian input operation for a 16-bit memory location * by reading from the specified address and returning the byte-swapped value * read from that address. * * @param Addr contains the address to perform the input operation at. * * @return The value read from the specified input address with the * proper endianness. The return value has the same endianness * as that of the processor, i.e. if the processor is big-engian, * the return value is the byte-swapped value read from the * address. * * * @note None. * ******************************************************************************/ #ifndef __LITTLE_ENDIAN__ u16 Xil_In16LE(u32 Addr) #else u16 Xil_In16BE(u32 Addr) #endif { u16 Value; /* get the data then swap it */ Value = Xil_In16(Addr); return Xil_EndianSwap16(Value); } /*****************************************************************************/ /** * * Perform a little-endian input operation for a 32-bit memory location * by reading from the specified address and returning the byte-swapped value * read from that address. * * @param Addr contains the address to perform the input operation at. * * @return The value read from the specified input address with the * proper endianness. The return value has the same endianness * as that of the processor, i.e. if the processor is big-engian, * the return value is the byte-swapped value read from the * address. * * @note None. * ******************************************************************************/ #ifndef __LITTLE_ENDIAN__ u32 Xil_In32LE(u32 Addr) #else u32 Xil_In32BE(u32 Addr) #endif { u32 InValue; /* get the data then swap it */ InValue = Xil_In32(Addr); return Xil_EndianSwap32(InValue); } /*****************************************************************************/ /** * * Perform a little-endian output operation for a 16-bit memory location by * writing the specified value to the the specified address. The value is * byte-swapped before being written. * * @param Addr contains the address to perform the output operation at. * @param Value contains the value to be output at the specified address. * The value has the same endianness as that of the processor. * If the processor is big-endian, the byte-swapped value is * written to the address. * * @return None. * * @note None. * ******************************************************************************/ #ifndef __LITTLE_ENDIAN__ void Xil_Out16LE(u32 Addr, u16 Value) #else void Xil_Out16BE(u32 Addr, u16 Value) #endif { u16 OutValue; /* swap the data then output it */ OutValue = Xil_EndianSwap16(Value); Xil_Out16(Addr, OutValue); } /*****************************************************************************/ /** * * Perform a little-endian output operation for a 32-bit memory location * by writing the specified value to the the specified address. The value is * byte-swapped before being written. * * @param Addr contains the address at which the output operation at. * @param Value contains the value to be output at the specified address. * The value has the same endianness as that of the processor. * If the processor is big-endian, the byte-swapped value is * written to the address. * * @return None. * * @note None. * ******************************************************************************/ #ifndef __LITTLE_ENDIAN__ void Xil_Out32LE(u32 Addr, u32 Value) #else void Xil_Out32BE(u32 Addr, u32 Value) #endif { u32 OutValue; /* swap the data then output it */ OutValue = Xil_EndianSwap32(Value); Xil_Out32(Addr, OutValue); }