/* $Id: xintc_tapp_example.c,v 1.1.4.1 2010/09/17 05:32:46 svemula Exp $ */
/******************************************************************************
*
* Copyright (C) 2011 - 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 THE
* XILINX CONSORTIUM 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 xscugic_tapp_example.c
*
* This file contains a self test example using the Interrupt Controller driver
* (XScuGic) and hardware device. Please reference other device driver examples to
* see more examples of how the Intc and interrupts can be used by a software
* application.
*
* The TestApp Gen utility uses this file to perform the self test and setup
* of Intc for interrupts.
*
* @note
*
* None
*
*
*
* MODIFICATION HISTORY:
*
* Ver Who Date Changes
* ----- ---- -------- --------------------------------------------------------
* 1.00a sdm 05/29/11 Created for Test App Integration
*
******************************************************************************/
/***************************** Include Files *********************************/
#include "xparameters.h"
#include "xstatus.h"
#include "xscugic.h"
#include "xil_exception.h"
/************************** Constant Definitions *****************************/
/*
* The following constants map to the XPAR parameters created in the
* xparameters.h file. They are defined here such that a user can easily
* change all the needed parameters in one place. This definition is not
* included if the example is generated from the TestAppGen test tool.
*/
#ifndef TESTAPP_GEN
#define INTC_DEVICE_ID XPAR_SCUGIC_SINGLE_DEVICE_ID
#endif
/**************************** Type Definitions *******************************/
/***************** Macros (Inline Functions) Definitions *********************/
/************************** Function Prototypes ******************************/
int ScuGicSelfTestExample(u16 DeviceId);
int ScuGicInterruptSetup(XScuGic *IntcInstancePtr, u16 DeviceId);
/************************** Variable Definitions *****************************/
static XScuGic IntcInstance; /* Instance of the Interrupt Controller */
/*****************************************************************************/
/**
*
* This is the main function for the Interrupt Controller example. This
* function is not included if the example is generated from the TestAppGen
* test tool.
*
* @param None.
*
* @return XST_SUCCESS to indicate success, otherwise XST_FAILURE.
*
* @note None.
*
******************************************************************************/
#ifndef TESTAPP_GEN
int main(void)
{
int Status;
/*
* Run the Scu Gic Intc example, specify the Device ID generated in
* xparameters.h.
*/
Status = ScuGicSelfTestExample(INTC_DEVICE_ID);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
return XST_SUCCESS;
}
#endif
/*****************************************************************************/
/**
*
* This function runs a self-test on the driver/device. This is a destructive
* test. This function is an example of how to use the interrupt controller
* driver component (XScuGic) and the hardware device. This function is designed
* to work without any hardware devices to cause interrupts. It may not return
* if the interrupt controller is not properly connected to the processor in
* either software or hardware.
*
* This function relies on the fact that the interrupt controller hardware
* has come out of the reset state such that it will allow interrupts to be
* simulated by the software.
*
* @param DeviceId is device ID of the Interrupt Controller Device,
* typically XPAR__DEVICE_ID value from
* xparameters.h.
*
* @return XST_SUCCESS to indicate success, otherwise XST_FAILURE.
*
* @note None.
*
******************************************************************************/
int ScuGicSelfTestExample(u16 DeviceId)
{
int Status;
static XScuGic_Config *GicConfig;
/*
* Initialize the interrupt controller driver so that it is ready to
* use.
*/
GicConfig = XScuGic_LookupConfig(DeviceId);
if (NULL == GicConfig) {
return XST_FAILURE;
}
Status = XScuGic_CfgInitialize(&IntcInstance, GicConfig,
GicConfig->CpuBaseAddress);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
return XST_SUCCESS;
}
/*****************************************************************************/
/**
*
* This function is used by the TestAppGen generated application to setup
* the interrupt controller.
*
* @param IntcInstancePtr is the reference to the Interrupt Controller
* instance.
* @param DeviceId is device ID of the Interrupt Controller Device,
* typically XPAR__DEVICE_ID value from
* xparameters.h.
*
* @return XST_SUCCESS to indicate success, otherwise XST_FAILURE.
*
* @note None.
*
******************************************************************************/
int ScuGicInterruptSetup(XScuGic *IntcInstancePtr, u16 DeviceId)
{
int Status;
static XScuGic_Config *GicConfig;
/*
* Initialize the interrupt controller driver so that it is ready to
* use.
*/
GicConfig = XScuGic_LookupConfig(DeviceId);
if (NULL == GicConfig) {
return XST_FAILURE;
}
Status = XScuGic_CfgInitialize(IntcInstancePtr, GicConfig,
GicConfig->CpuBaseAddress);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Initialize the exception table.
*/
Xil_ExceptionInit();
/*
* Connect the interrupt controller interrupt handler to the hardware
* interrupt handling logic in the processor.
*/
Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_IRQ_INT,
(Xil_ExceptionHandler)XScuGic_InterruptHandler,
IntcInstancePtr);
/*
* Enable exceptions.
*/
Xil_ExceptionEnable();
return XST_SUCCESS;
}