nuclear@11: #ifndef INTR_H_
nuclear@11: #define INTR_H_
nuclear@11: 
nuclear@11: #include <inttypes.h>
nuclear@25: #include "asmops.h"
nuclear@11: 
nuclear@35: /* offset used to remap IRQ numbers (+32) */
nuclear@35: #define IRQ_OFFSET		32
nuclear@35: /* conversion macros between IRQ and interrupt numbers */
nuclear@35: #define IRQ_TO_INTR(x)	((x) + IRQ_OFFSET)
nuclear@35: #define INTR_TO_IRQ(x)	((x) - IRQ_OFFSET)
nuclear@35: /* checks whether a particular interrupt is an remapped IRQ */
nuclear@35: #define IS_IRQ(n)	((n) >= IRQ_OFFSET && (n) < IRQ_OFFSET + 16)
nuclear@35: 
nuclear@47: /* structure used to pass the interrupt stack frame from the
nuclear@47:  * entry points to the C dispatch function.
nuclear@47:  */
nuclear@47: struct intr_frame {
nuclear@47: 	/* registers pushed by pusha in intr_entry_* */
nuclear@47: 	struct registers regs;
nuclear@54: 	/* data segment selectors */
nuclear@54: 	uint32_t ds, es, fs, gs;
nuclear@47: 	/* interrupt number and error code pushed in intr_entry_* */
nuclear@47: 	uint32_t inum, err;
nuclear@47: 	/* pushed by CPU during interrupt entry */
nuclear@47: 	uint32_t eip, cs, eflags;
nuclear@47: 	/* pushed by CPU during interrupt entry from user space */
nuclear@47: 	uint32_t esp, ss;
nuclear@49: } __attribute__ ((packed));
nuclear@47: 
nuclear@47: 
nuclear@35: 
nuclear@52: typedef void (*intr_func_t)(int);
nuclear@11: 
nuclear@11: 
nuclear@11: void init_intr(void);
nuclear@11: 
nuclear@52: struct intr_frame *get_intr_frame(void);
nuclear@52: 
nuclear@11: void interrupt(int intr_num, intr_func_t func);
nuclear@11: 
nuclear@25: /* defined in intr-asm.S */
nuclear@25: int get_intr_state(void);
nuclear@25: void set_intr_state(int s);
nuclear@25: 
nuclear@47: void intr_ret(struct intr_frame ifrm);
nuclear@47: 
nuclear@51: void end_of_irq(int irq);
nuclear@51: 
nuclear@11: #endif	/* INTR_H_ */