ef6ec50aa5
swbeta2 commit 8e824dfe3b169461916c0190194a3eb5a7810b1a xilpm provides a set of APIs which can be used by standalone applications to call in PMUFW power management APIs via IPI. Self-suspend example is provided to demonstrate the usage of this library. Signed-off-by: Jyotheeswar Reddy <jyothee@xilinx.com>
128 lines
4.1 KiB
C
128 lines
4.1 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2015 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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* CONTENT
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* Generic functions for gic initialization and interrupt enabling
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*********************************************************************/
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#include "gic_setup.h"
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XScuGic GicInst;
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/**
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* GicSetupHandler() - Connect interrupt Handler to the specified interrupt number
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* @IntId Interrupt id
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* @PeriphInstPtr Pointer to the peripheral driver
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* @Handler Interrupt Handler that for the specified peripheral
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*
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* @return Status of operation success (XST_* from xstatus.h)
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*/
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int32_t GicSetupHandler(uint32_t IntId, void *PeriphInstPtr, Xil_ExceptionHandler Handler)
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{
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int32_t status;
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/*
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* Connect a device driver Handler that will be called when an
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* interrupt for the device occurs, the device driver Handler
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* performs the specific interrupt processing for the device
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*/
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status = XScuGic_Connect(&GicInst, IntId,
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Handler,
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PeriphInstPtr);
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return status;
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}
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/**
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* GicEnableInterrupt() - Enable interrupt in gic
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*/
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void GicEnableInterrupt(uint32_t IntId)
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{
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XScuGic_Enable(&GicInst, IntId);
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}
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/**
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* GicInit() - Initialize gic
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*
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* @return Status of operation success (XST_* from xstatus.h)
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*/
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int32_t GicInit()
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{
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int32_t Status;
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XScuGic_Config *GicCfgPtr;
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/* Initialize the interrupt controller driver */
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GicCfgPtr = XScuGic_LookupConfig(INTC_DEVICE_ID);
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if (NULL == GicCfgPtr)
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return XST_FAILURE;
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Status = XScuGic_CfgInitialize(&GicInst, GicCfgPtr, GicCfgPtr->CpuBaseAddress);
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if (XST_SUCCESS != Status)
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return Status;
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/*
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* Connect the interrupt controller interrupt Handler to the
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* hardware interrupt handling logic in the processor.
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*/
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Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,
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(Xil_ExceptionHandler)XScuGic_InterruptHandler,
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&GicInst);
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return XST_SUCCESS;
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}
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/**
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* GicSetupInterruptSystem() - configure the system to receive peripheral interrupt
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* @IntId interrupt id of the timer
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* @PeriphInstPtr peripheral
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* @Handler interrupt Handler
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*
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* Does everything that is needed for enabling interrupts (gic setup, Handler connecting,
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* interrupt enabling on processor and gic level)
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*
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* @return: status of operation success (XST_* from xstatus.h)
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*/
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int32_t GicSetupInterruptSystem(uint32_t IntId,
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void *PeriphInstPtr, Xil_ExceptionHandler Handler)
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{
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int32_t Status;
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Status = GicInit();
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if(XST_SUCCESS != Status)
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return Status;
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Status = GicSetupHandler(IntId, PeriphInstPtr, Handler);
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if(XST_SUCCESS != Status)
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return Status;
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GicEnableInterrupt(IntId);
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Xil_ExceptionEnable();
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return XST_SUCCESS;
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}
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