irq.h

来自「这是leon3处理器的交叉编译链」· C头文件 代码 · 共 55 行

#ifndef _LEON_CATCHIRQ_HANDLER_H_
#define _LEON_CATCHIRQ_HANDLER_H_

#include <asm-leon/leon.h>
#include <sys/fsu_pthread_queue.h>
#include <asm-leon/leoncompat.h>
#include <asm-leon/leonstack.h>

struct pt_regs;
typedef int (*irqhandler)(int, void *, struct leonbare_pt_regs *);

struct irqaction  {
	irqhandler handler;
	unsigned long flags;
	void *dev_id;
	struct irqaction *next;
};
#define INIT_IRQACTION { 0,0,0,0 }
extern void chained_catch_interrupt (int irq, struct irqaction *a );
extern int catch_interrupt (int func, int irq);

typedef int (*schedulehandler)(struct leonbare_pt_regs *);
extern schedulehandler schedule_callback;
typedef int (*tickerhandler)(struct leonbare_pt_regs *);
extern tickerhandler ticker_callback;

extern void leonbare_enable_traps(unsigned long old_flags); 
extern unsigned long leonbare_disable_traps();

extern __inline__ void leonbare_enable_irq(int irq) {
	unsigned int old, irqmask = 1 << irq;
        old = leonbare_disable_traps();
	//---------------------
	switch (LEONCOMPAT_VERSION) {
	case 2:
	  LEON_REG.Interrupt_Mask = LEON_REG.Interrupt_Mask | irqmask;
	  break;
	case 3:
	default:
	  LEON3_IrqCtrl_Regs ->mask[0] = LEON3_IrqCtrl_Regs ->mask[0] | irqmask;
	  break;
	}
	//---------------------
        leonbare_enable_traps(old);
}

typedef int (*pendinghandler)(void *);
struct pendingaction  {
	TAILQ_ENTRY(pendingaction) next; 
	pendinghandler handler;
	void *arg;
};

#endif