97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
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#include <rthw.h>
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#define MAX_HANDLERS (128)
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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 irq_desc[MAX_HANDLERS];
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rt_uint32_t rt_interrupt_from_thread;
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rt_uint32_t rt_interrupt_to_thread;
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rt_uint32_t rt_thread_switch_interrupt_flag;
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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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return;
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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_unmask(int irq)
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{
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return;
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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("UN-handled interrupt %d occurred!!!\n", vector);
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return RT_NULL;
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}
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void rt_hw_interrupt_init(void)
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{
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int idx;
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/* config interrupt vector*/
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/* enable interrupt*/
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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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rt_hw_interrupt_mask(idx);
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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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rt_uint32_t rt_hw_interrupt_get_active(rt_uint32_t fiq_irq)
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{
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//volatile rt_uint32_t irqstat;
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rt_uint32_t id;
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return id;
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}
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void rt_hw_interrupt_ack(rt_uint32_t fiq_irq, rt_uint32_t id)
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{
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return;
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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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