224 lines
6.3 KiB
C
224 lines
6.3 KiB
C
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/*
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* File : interrupt.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2013, RT-Thread Development Team
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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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* Change Logs:
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* Date Author Notes
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* 2013-7-14 Peng Fan sep6200 implementation
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*/
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#include <rtthread.h>
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#include <rthw.h>
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#include <sep6200.h>
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#define MAX_HANDLERS 64
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#define SEP6200_IRQ_TYPE 0
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#define SEP6200_FIQ_TYPE 1
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#define int_enable_all() \
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do { \
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*(volatile unsigned long*)SEP6200_VIC_INT_EN_L = ~0x0;\
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*(volatile unsigned long*)SEP6200_VIC_INT_EN_H = ~0x0;\
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}while(0)
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#define int_disable_all() \
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do { \
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*(volatile unsigned long*)SEP6200_VIC_INT_EN_L = 0x0;\
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*(volatile unsigned long*)SEP6200_VIC_INT_EN_H = 0x0;\
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}while(0)
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#define mask_all_int(int_type) \
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do { \
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if (int_type == SEP6200_IRQ_TYPE){ \
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*(volatile unsigned long*)SEP6200_VIC_INT_MSK_ALL = 0x1;\
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} else if (int_type == SEP6200_FIQ_TYPE) {\
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*(volatile unsigned long*)SEP6200_VIC_INT_MSK_ALL = 0x2;\
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}\
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}while(0)
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#define unmask_all_int(int_type)\
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do { \
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if (int_type == SEP6200_IRQ_TYPE){ \
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*(volatile unsigned long*)SEP6200_VIC_INT_MSK_ALL = ~0x1;\
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} else if (int_type == SEP6200_FIQ_TYPE) {\
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*(volatile unsigned long*)SEP6200_VIC_INT_MSK_ALL = ~0x2;\
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}\
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}while(0)
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#define SEP6200_INT_SET(intnum) \
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do{ \
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if(intnum < 32) \
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*(volatile unsigned long*)SEP6200_VIC_SFT_INT_L |= (1 << intnum); \
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else \
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*(volatile unsigned long*)SEP6200_VIC_SFT_INT_H |= (1 << (intnum - 32)); \
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}while(0)
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#define SEP6200_INT_CLR(intnum) \
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do{ \
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if(intnum < 32) \
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*(volatile unsigned long*)SEP6200_VIC_SFT_INT_L &= ~(1 << intnum);\
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else \
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*(volatile unsigned long*)SEP6200_VIC_SFT_INT_H &= ~(1 << (intnum - 32)); \
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}while(0)
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#define SEP6200_INT_ENABLE(intnum)\
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do{ \
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if(intnum < 32) \
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*(volatile unsigned long*)SEP6200_VIC_INT_EN_L |= (1 << intnum); \
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else \
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*(volatile unsigned long*)SEP6200_VIC_INT_EN_H |= (1 << (intnum - 32)); \
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}while(0)
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#define SEP6200_INT_DISABLE(intnum) \
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do{ \
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if(intnum < 32) \
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*(volatile unsigned long*)SEP6200_VIC_INT_EN_L &= ~(1 << intnum); \
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else \
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*(volatile unsigned long*)SEP6200_VIC_INT_EN_H &= ~(1 << (intnum - 32)); \
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}while(0)
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extern rt_uint32_t rt_interrupt_nest;
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/* exception and interrupt handler table */
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struct rt_irq_desc isr_table[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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* Interrupt initialization
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* -------------------------------------------------------------------- */
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/**
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* @addtogroup sep6200
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*/
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/*@{*/
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void rt_hw_interrupt_mask(int irq);
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void rt_hw_interrupt_umask(int irq);
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rt_inline void sep6200_irq_enable(rt_uint32_t irq)
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{
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SEP6200_INT_ENABLE(irq);
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}
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rt_inline void sep6200_irq_disable(rt_uint32_t irq)
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{
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SEP6200_INT_DISABLE(irq);
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}
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rt_inline void sep6200_irq_unmask(rt_uint32_t irq)
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{
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SEP6200_INT_ENABLE(irq);
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}
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rt_inline void sep6200_irq_mask(rt_uint32_t irq)
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{
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SEP6200_INT_DISABLE(irq);
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}
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rt_isr_handler_t rt_hw_interrupt_handle(rt_uint32_t vector)
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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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/* init exceptions table */
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for(idx=0; idx < MAX_HANDLERS; idx++)
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{
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isr_table[idx].handler = (rt_isr_handler_t)rt_hw_interrupt_handle;
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}
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int_disable_all();
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mask_all_int(SEP6200_FIQ_TYPE);
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//int_enable_all();
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unmask_all_int(SEP6200_IRQ_TYPE);
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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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if (irq >= MAX_HANDLERS) {
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rt_kprintf("Wrong irq num to mask\n");
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} else {
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sep6200_irq_mask(irq);
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}
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}
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/**
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* This function will un-mask a interrupt.
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* @param vector the interrupt number
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*/
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void rt_hw_interrupt_umask(int irq)
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{
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if (irq >= MAX_HANDLERS) {
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rt_kprintf("Wrong irq num to unmask\n");
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} else {
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sep6200_irq_unmask(irq);
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}
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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 new_handler the interrupt service routine to be installed
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* @param old_handler the old interrupt service routine
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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 = isr_table[vector].handler;
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if (handler != RT_NULL)
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{
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#ifdef RT_USING_INTERRUPT_INFO
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rt_strncpy(isr_table[vector].name, name, RT_NAME_MAX);
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#endif /* RT_USING_INTERRUPT_INFO */
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isr_table[vector].handler = handler;
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isr_table[vector].param = param;
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}
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}
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return old_handler;
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}
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/*@}*/
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