OpenCloudOS-Kernel/include/asm-x86/i8253.h

19 lines
348 B
C

#ifndef ASM_X86__I8253_H
#define ASM_X86__I8253_H
/* i8253A PIT registers */
#define PIT_MODE 0x43
#define PIT_CH0 0x40
#define PIT_CH2 0x42
extern spinlock_t i8253_lock;
extern struct clock_event_device *global_clock_event;
extern void setup_pit_timer(void);
#define inb_pit inb_p
#define outb_pit outb_p
#endif /* ASM_X86__I8253_H */