133 lines
3.1 KiB
C
133 lines
3.1 KiB
C
/*
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* Copyright (c) 2006-2018, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2020-03-19 WangHuachen first version
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#include "zynqmp-r5.h"
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#include "interrupt.h"
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#include "gic.h"
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#define MAX_HANDLERS IRQ_ZynqMP_MAXNR
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extern volatile rt_uint8_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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void rt_hw_interrupt_handle(int vector, void *param)
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{
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rt_kprintf("UN-handled interrupt %d occurred!!!\n", vector);
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}
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void rt_hw_interrupt_init(void)
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{
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register rt_uint32_t idx;
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/* the initialization is done in fsbl */
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/* init exceptions table */
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rt_memset(isr_table, 0x00, sizeof(isr_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_hw_interrupt_handle;
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}
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/* initialize ARM GIC */
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arm_gic_dist_init(0, ZynqMP_GIC_DIST_BASE, 0);
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arm_gic_cpu_init(0, ZynqMP_GIC_CPU_BASE);
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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 vector)
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{
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arm_gic_mask(0, vector);
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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 vector)
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{
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arm_gic_umask(0, vector);
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}
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/**
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* This function returns the active interrupt number.
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* @param none
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*/
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int rt_hw_interrupt_get_irq(void)
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{
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return arm_gic_get_active_irq(0) & GIC_ACK_INTID_MASK;
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}
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/**
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* This function acknowledges the interrupt.
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* @param vector the interrupt number
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*/
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void rt_hw_interrupt_ack(int vector)
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{
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arm_gic_ack(0, vector);
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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 parameter for interrupt service routine
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* @param name the interrupt name
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*
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* @return the 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, const 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_snprintf(isr_table[vector].name, RT_NAME_MAX, "%s", name);
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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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/* set the interrupt to this cpu */
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arm_gic_set_cpu(0, vector, 1 << rt_cpu_get_smp_id());
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}
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return old_handler;
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}
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void rt_hw_interrupt_trigger(int vector)
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{
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arm_gic_trigger(0, 1 << rt_cpu_get_smp_id(), vector);
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}
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void rt_hw_interrupt_clear(int vector)
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{
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/* SGI will be cleared automatically. */
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} |