2c8f92039d
Added initial support Xilinx Embedded Software. Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
173 lines
7.2 KiB
C
Executable file
173 lines
7.2 KiB
C
Executable file
/******************************************************************************
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*
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* Copyright (C) 2002 - 2014 Xilinx, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* Use of the Software is limited solely to applications:
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* (a) running on a Xilinx device, or
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* (b) that interact with a Xilinx device through a bus or interconnect.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* XILINX CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of the Xilinx shall not be used
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* in advertising or otherwise to promote the sale, use or other dealings in
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* this Software without prior written authorization from Xilinx.
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*
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******************************************************************************/
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/*****************************************************************************/
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/**
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*
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* @file xintc_intr.c
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*
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* This file contains the interrupt processing for the XIntc component which
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* is the driver for the Xilinx Interrupt Controller. The interrupt
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* processing is partitioned seperately such that users are not required to
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* use the provided interrupt processing. This file requires other files of
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* the driver to be linked in also.
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*
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* Two different interrupt handlers are provided for this driver such that the
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* user must select the appropriate handler for the application. The first
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* interrupt handler, XIntc_VoidInterruptHandler, is provided for systems
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* which use only a single interrupt controller or for systems that cannot
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* otherwise provide an argument to the XIntc interrupt handler (e.g., the RTOS
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* interrupt vector handler may not provide such a facility). The constant
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* XPAR_INTC_SINGLE_DEVICE_ID must be defined for this handler to be included in
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* the driver. The second interrupt handler, XIntc_InterruptHandler, uses an
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* input argument which is an instance pointer to an interrupt controller driver
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* such that multiple interrupt controllers can be supported. This handler
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* requires the calling function to pass it the appropriate argument, so another
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* level of indirection may be required.
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*
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* Note that both of these handlers are now only provided for backward
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* compatibility. The handler defined in xintc_l.c is the recommended handler.
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*
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* The interrupt processing may be used by connecting one of the interrupt
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* handlers to the interrupt system. These handlers do not save and restore
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* the processor context but only handle the processing of the Interrupt
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* Controller. The two handlers are provided as working examples. The user is
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* encouraged to supply their own interrupt handler when performance tuning is
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* deemed necessary.
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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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* 1.00b jhl 02/13/02 First release
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* 1.00c rpm 10/17/03 New release. Support the static vector table created
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* in the xintc_g.c configuration table. Collapse handlers
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* to use the XIntc_DeviceInterruptHandler() in xintc_l.c.
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* 1.00c rpm 04/09/04 Added conditional compilation around the old handler
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* XIntc_VoidInterruptHandler(). This handler will only be
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* include/compiled if XPAR_INTC_SINGLE_DEVICE_ID is defined.
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* 1.10c mta 03/21/07 Updated to new coding style
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* 2.00a ktn 10/20/09 Updated to use HAL Processor APIs.
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*
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* </pre>
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*
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* @internal
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*
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* This driver assumes that the context of the processor has been saved prior to
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* the calling of the Interrupt Controller interrupt handler and then restored
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* after the handler returns. This requires either the running RTOS to save the
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* state of the machine or that a wrapper be used as the destination of the
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* interrupt vector to save the state of the processor and restore the state
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* after the interrupt handler returns.
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*
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******************************************************************************/
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/***************************** Include Files *********************************/
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#include "xil_types.h"
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#include "xil_assert.h"
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#include "xparameters.h"
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#include "xintc.h"
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/************************** Constant Definitions *****************************/
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/**************************** Type Definitions *******************************/
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/***************** Macros (Inline Functions) Definitions *********************/
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/************************** Function Prototypes ******************************/
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/************************** Variable Definitions *****************************/
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/*****************************************************************************/
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/**
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*
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* Interrupt handler for the driver used when there can be no argument passed
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* to the handler. This function is provided mostly for backward compatibility.
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* The user should use XIntc_DeviceInterruptHandler(), defined in xintc_l.c,
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* if possible.
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*
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* The user must connect this function to the interrupt system such that it is
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* called whenever the devices which are connected to it cause an interrupt.
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*
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* @return None.
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*
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* @note
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*
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* The constant XPAR_INTC_SINGLE_DEVICE_ID must be defined for this handler
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* to be included in the driver compilation.
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*
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******************************************************************************/
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#ifdef XPAR_INTC_SINGLE_DEVICE_ID
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void XIntc_VoidInterruptHandler(void)
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{
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/* Use the single instance to call the main interrupt handler */
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XIntc_DeviceInterruptHandler((void *) XPAR_INTC_SINGLE_DEVICE_ID);
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}
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#endif
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/*****************************************************************************/
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/**
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*
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* The interrupt handler for the driver. This function is provided mostly for
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* backward compatibility. The user should use XIntc_DeviceInterruptHandler(),
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* defined in xintc_l.c when possible and pass the device ID of the interrupt
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* controller device as its argument.
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*
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* The user must connect this function to the interrupt system such that it is
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* called whenever the devices which are connected to it cause an interrupt.
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*
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* @param InstancePtr is a pointer to the XIntc instance to be worked on.
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*
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* @return None.
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*
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* @note None.
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*
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******************************************************************************/
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void XIntc_InterruptHandler(XIntc * InstancePtr)
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{
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/* Assert that the pointer to the instance is valid
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*/
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Xil_AssertVoid(InstancePtr != NULL);
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/* Use the instance's device ID to call the main interrupt handler.
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* (the casts are to avoid a compiler warning)
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*/
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XIntc_DeviceInterruptHandler((void *)
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((u32) (InstancePtr->CfgPtr->DeviceId)));
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}
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