217 lines
6.1 KiB
C
217 lines
6.1 KiB
C
/*
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* This file is part of FH8620 BSP for RT-Thread distribution.
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*
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* Copyright (c) 2016 Shanghai Fullhan Microelectronics Co., Ltd.
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* All rights reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Visit http://www.fullhan.com to get contact with Fullhan.
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*
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* Change Logs:
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* Date Author Notes
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*/
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/*****************************************************************************
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* Include Section
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* add all #include here
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*****************************************************************************/
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#include "interrupt.h"
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#include "fh_def.h"
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#include "fh_arch.h"
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#include "libraries/inc/fh_ictl.h"
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/*****************************************************************************
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* Define section
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* add all #define here
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*****************************************************************************/
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#define MAX_HANDLERS (NR_INTERNAL_IRQS+NR_EXTERNAL_IRQS)
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/****************************************************************************
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* ADT section
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* add definition of user defined Data Type that only be used in this file here
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***************************************************************************/
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/******************************************************************************
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* Function prototype section
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* add prototypes for all functions called by this file,execepting those
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* declared in header file
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*****************************************************************************/
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/*****************************************************************************
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* Global variables section - Exported
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* add declaration of global variables that will be exported here
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* e.g.
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* int8_t foo;
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****************************************************************************/
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extern rt_uint32_t rt_interrupt_nest;
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struct rt_irq_desc irq_desc[MAX_HANDLERS];
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rt_uint32_t rt_interrupt_from_thread, rt_interrupt_to_thread;
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rt_uint32_t rt_thread_switch_interrupt_flag;
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/*****************************************************************************
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* Global variables section - Local
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* define global variables(will be refered only in this file) here,
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* static keyword should be used to limit scope of local variable to this file
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* e.g.
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* static uint8_t ufoo;
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*****************************************************************************/
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/* function body */
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/*****************************************************************************
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* Description:
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* add funtion description here
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* Parameters:
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* description for each argument, new argument starts at new line
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* Return:
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* what does this function returned?
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*****************************************************************************/
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rt_isr_handler_t rt_hw_interrupt_handle(rt_uint32_t vector, void *param)
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{
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rt_kprintf("Unhandled interrupt %d occured!!!\n", vector);
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return RT_NULL;
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}
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/**
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* This function will initialize hardware interrupt
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*/
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void rt_hw_interrupt_init(void)
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{
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rt_int32_t i;
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register rt_uint32_t idx;
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fh_intc *p = (fh_intc *)INTC_REG_BASE;
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ictl_close_all_isr(p);
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/* init exceptions table */
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for(idx=0; idx < MAX_HANDLERS; idx++)
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{
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irq_desc[idx].handler = (rt_isr_handler_t)rt_hw_interrupt_handle;
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irq_desc[idx].param = RT_NULL;
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#ifdef RT_USING_INTERRUPT_INFO
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rt_snprintf(irq_desc[idx].name, RT_NAME_MAX - 1, "default");
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irq_desc[idx].counter = 0;
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#endif
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}
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/* init interrupt nest, and context in thread sp */
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rt_interrupt_nest = 0;
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rt_interrupt_from_thread = 0;
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rt_interrupt_to_thread = 0;
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rt_thread_switch_interrupt_flag = 0;
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}
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/**
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* This function will mask a interrupt.
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* @param vector the interrupt number
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*/
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void rt_hw_interrupt_mask(int irq)
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{
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fh_intc *p = (fh_intc *)INTC_REG_BASE;
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/* Disable irq on AIC */
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ictl_mask_isr(p,irq);
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// if (irq < 32)
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// p->IRQ_EN_L &= ~(1 << irq);
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// else
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// p->IRQ_EN_H &= ~(1 << (irq - 32));
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}
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void rt_hw_interrupt_umask(int irq)
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{
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fh_intc *p = (fh_intc *)INTC_REG_BASE;
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/* Enable irq on AIC */
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ictl_unmask_isr(p,irq);
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// if (irq < 32)
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// p->IRQ_EN_L |= 1 << irq;
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// else
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// p->IRQ_EN_H |= 1 << (irq - 32);
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}
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/**
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* This function will install a interrupt service routine to a interrupt.
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* @param vector the interrupt number
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* @param handler the interrupt service routine to be installed
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* @param param the interrupt service function parameter
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* @param name the interrupt name
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* @return old handler
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*/
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rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler,
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void *param, char *name)
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{
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rt_isr_handler_t old_handler = RT_NULL;
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if(vector < MAX_HANDLERS)
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{
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old_handler = irq_desc[vector].handler;
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if (handler != RT_NULL)
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{
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irq_desc[vector].handler = (rt_isr_handler_t)handler;
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irq_desc[vector].param = param;
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#ifdef RT_USING_INTERRUPT_INFO
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rt_snprintf(irq_desc[vector].name, RT_NAME_MAX - 1, "%s", name);
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irq_desc[vector].counter = 0;
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#endif
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}
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}
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return old_handler;
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}
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#ifdef RT_USING_FINSH
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void list_irq(void)
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{
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#ifdef RT_USING_INTERRUPT_INFO
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int irq;
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rt_kprintf("number\tcount\tname\n");
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for (irq = 0; irq < MAX_HANDLERS; irq++)
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{
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if (rt_strncmp(irq_desc[irq].name, "default", sizeof("default")))
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{
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rt_kprintf("%02ld: %10ld %s\n", irq, irq_desc[irq].counter, irq_desc[irq].name);
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}
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}
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#else
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rt_kprintf("please open 'RT_USING_INTERRUPT_INFO'\n");
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#endif
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}
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#include <finsh.h>
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FINSH_FUNCTION_EXPORT(list_irq, list system irq);
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#endif
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