/* $Id: xgpio_l.h,v 1.3 2004/02/24 23:19:42 moleres Exp $ *//********************************************************************************       XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS"*       AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND*       SOLUTIONS FOR XILINX DEVICES.  BY PROVIDING THIS DESIGN, CODE,*       OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE,*       APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION*       THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT,*       AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE*       FOR YOUR IMPLEMENTATION.  XILINX EXPRESSLY DISCLAIMS ANY*       WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE*       IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR*       REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF*       INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS*       FOR A PARTICULAR PURPOSE.**       (c) Copyright 2002 Xilinx Inc.*       All rights reserved.*******************************************************************************//*****************************************************************************//**** @file xgpio_l.h** This header file contains identifiers and low-level driver functions (or* macros) that can be used to access the device.  The user should refer to the* hardware device specification for more details of the device operation.* High-level driver functions are defined in xgpio.h.** @note** This driver does not support the second channel of the dual channel gpio* cores, nor does it support interrupts for those gpio cores that include* interrupts.** <pre>* MODIFICATION HISTORY:** Ver   Who  Date     Changes* ----- ---- -------- -----------------------------------------------* 1.00a jhl  04/24/02 First release* 1.00a rpm  02/24/04 Added notes indicating lack of interrupt and dual channel*			 		  support.* </pre>*******************************************************************************/#ifndef XGPIO_L_H /* prevent circular inclusions */#define XGPIO_L_H /* by using protection macros *//***************************** Include Files *********************************/#include "xbasic_types.h"#include "xio.h"/************************** Constant Definitions *****************************//** @name Registers * * Register offsets for this device. This device does not utilize IPIF registers. * @{ *//** * - XGPIO_DATA_OFFSET    Data register * - XGPIO_TRI_OFFSET     Three state register (sets input/output direction) *                        0 configures pin for output and 1 for input. */#define XGPIO_DATA_OFFSET  0x00000000#define XGPIO_TRI_OFFSET   0x00000004/* @} *//**************************** Type Definitions *******************************//***************** Macros (Inline Functions) Definitions *********************//******************************************************************************* Low-level driver macros.  The list below provides signatures to help the* user use the macros.** Xuint32 XGpio_mReadReg(Xuint32 BaseAddress, int RegOffset, Xuint32 Data)* void XGpio_mWriteReg(Xuint32 BaseAddress, int RegOffset, Xuint32 Data)** void XGpio_mSetDataDirection(Xuint32 BaseAddress, Xuint32 DirectionMask)** Xuint32 XGpio_mGetDataReg(Xuint32 BaseAddress)* void XGpio_mSetDataReg(Xuint32 BaseAddress, Xuint32 Mask)******************************************************************************//****************************************************************************//** * * Write a value to a GPIO register. A 32 bit write is performed. If the * GPIO component is implemented in a smaller width, only the least * significant data is written. * * @param   BaseAddress is the base address of the GPIO device. * @param   RegOffset is the register offset from the base to write to. * @param   Data is the data written to the register. * * @return  None. * * @note    None. * ****************************************************************************/#define XGpio_mWriteReg(BaseAddress, RegOffset, Data) \    (XIo_Out32((BaseAddress) + (RegOffset), (Xuint32)(Data)))/****************************************************************************//** * * Read a value from a GPIO register. A 32 bit read is performed. If the * GPIO component is implemented in a smaller width, only the least * significant data is read from the register. The most significant data * will be read as 0. * * @param   BaseAddress is the base address of the GPIO device. * @param   Register is the register offset from the base to write to. * @param   Data is the data written to the register. * * @return  None. * * @note    None. * ****************************************************************************/#define XGpio_mReadReg(BaseAddress, RegOffset) \    (XIo_In32((BaseAddress) + (RegOffset)))/******************************************************************************* Set the input/output direction of all signals.** @param    BaseAddress contains the base address of the GPIO device.* @param    DirectionMask is a bitmask specifying which discretes are input and*           which are output. Bits set to 0 are output and bits set to 1 are*           input.** @return   None.** @note     None.*******************************************************************************/#define XGpio_mSetDataDirection(BaseAddress, DirectionMask) \    XGpio_mWriteReg((BaseAddress), XGPIO_TRI_OFFSET, (DirectionMask))/****************************************************************************//*** Get the data register.** @param    BaseAddress contains the base address of the GPIO device.** @return   The contents of the data register.** @note     None.******************************************************************************/#define XGpio_mGetDataReg(BaseAddress) \    XGpio_mReadReg(BaseAddress, XGPIO_DATA_OFFSET)/****************************************************************************//*** Set the data register.** @param    BaseAddress contains the base address of the GPIO device.* @param    Data is the value to be written to the data register.** @return   None.** @note     None.******************************************************************************/#define XGpio_mSetDataReg(BaseAddress, Data) \    XGpio_mWriteReg((BaseAddress), XGPIO_DATA_OFFSET, (Data))/************************** Function Prototypes ******************************//************************** Variable Definitions *****************************/#endif            /* end of protection macro */