/*   ==================================================================

     >>>>>>>>>>>>>>>>>>>>>>> COPYRIGHT NOTICE <<<<<<<<<<<<<<<<<<<<<<<<<
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       IMPORTANT: THIS FILE IS USED BY OR GENERATED BY the LATTICE PROPEL™
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     ================================================================== */

#ifndef EXT_PIC_H_
#define EXT_PIC_H_

#include "util.h"

#if 0
struct pic_reg {
	volatile unsigned int isrc;
	volatile unsigned int isrs;
	volatile unsigned int isr;
	volatile unsigned int reserved1;
	volatile unsigned int ierc;
	volatile unsigned int iers;
	volatile unsigned int ier;
	volatile unsigned int reserved2;
	volatile unsigned int polc;
	volatile unsigned int pols;
	volatile unsigned int pol;
};
#endif



struct ext_pic_reg {
	volatile unsigned int pic_status;
	volatile unsigned int pic_en;
	volatile unsigned int pic_set;
	volatile unsigned int pic_pol;
};


enum ext_interrupt_src {
	EXT_INT_PIC0 = 0,
	EXT_INT_PIC1 = 1,
	EXT_INT_PIC2 = 2,
	EXT_INT_PIC3 = 3,
	EXT_INT_PIC4 = 4,
	EXT_INT_PIC5 = 5,
	EXT_INT_PIC6 = 6,
	EXT_INT_PIC7 = 7,
	EXT_INT_NUM = 8
};

struct ext_interrupt_entry {
	void (*isr) (void *);	// ISR
	void *context;		// base address of IP
};

struct pic_inst
{
	unsigned int base_addr;
	unsigned int int_num;
	struct ext_interrupt_entry int_table[EXT_INT_NUM];
};

unsigned char ext_pic_int_clear(unsigned char src);
unsigned char ext_pic_int_enable(unsigned char src);
unsigned char ext_pic_int_disable(unsigned char src);
unsigned char ext_pic_int_pending(unsigned char src);
unsigned char ext_pic_init(struct pic_inst *pic_instance, unsigned int base);
unsigned char ext_pic_int_polarity_set(unsigned char src, unsigned char bit);
unsigned char ext_pic_int_polarity_get(unsigned char src, unsigned char *pol);
unsigned char ext_pic_int_status_get(unsigned int *status);
unsigned char ext_pic_isr_register(struct pic_inst *pic_instance, unsigned char src, void (*isr) (void *),
			       void *context);
void ext_pic_isr_callback(void *ctx);

#endif				/* EXT_PIC_H_ */