include/cpu/irq.h


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#ifndef CPU_IRQ_H
#define CPU_IRQ_H

#define UART_IRQ 0
#define SYS_TIMER_0_IRQ 1
#define SYS_TIMER_1_IRQ 2
#define SYS_TIMER_2_IRQ 3
#define SYS_TIMER_3_IRQ 4
#define GPIO_BANK_1_IRQ 5
#define GPIO_BANK_2_IRQ 6
#define LOCAL_TIMER_IRQ 7
#define MAX_IRQS LOCAL_TIMER_IRQ+1

struct IrqEntry {
	void* handler;
	void* handler_info;
};

struct UartInfo {
	unsigned long priority;
};

struct SysTimerInfo {
	unsigned long tick_rate;
	unsigned long priority;
	void* arg;
	unsigned long oneshot;
};

struct GPIOInfo {
	unsigned long pin;
	unsigned long priority;
};

static inline void enableirq(void)
{
	asm volatile("cpsie i");
}
static inline void disableirq(void)
{
	asm volatile("cpsid i");
}
static inline void enablefiq(void)
{
	asm volatile("cpsie f");
}
static inline void disablefiq(void)
{
	asm volatile("cpsid f");
}

unsigned long c_irq_handler(void);
unsigned long c_fiq_handler(void);
void subscribe_irq(unsigned long irq_num, void* handler, void* handler_info);
void unsubscribe_irq(unsigned long irq_num);

#endif