1 #ifndef __ASM_I8259_H__ 2 #define __ASM_I8259_H__ 3 4 extern unsigned int cached_irq_mask; 5 6 #define __byte(x,y) (((unsigned char *) &(y))[x]) 7 #define cached_master_mask (__byte(0, cached_irq_mask)) 8 #define cached_slave_mask (__byte(1, cached_irq_mask)) 9 10 extern spinlock_t i8259A_lock; 11 12 extern void init_8259A(int auto_eoi); 13 extern void enable_8259A_irq(unsigned int irq); 14 extern void disable_8259A_irq(unsigned int irq); 15 extern unsigned int startup_8259A_irq(unsigned int irq); 16 17 #endif /* __ASM_I8259_H__ */ 18