/*
 * Copyright (C) 2017 Robin Krahl <robin.krahl@ireas.org>
 * 
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 */

#ifndef GARMOS_ARCH_H
#define GARMOS_ARCH_H

#include <garmos/types.h>

/*
 * The functions in this header depend on the architecture.  They should be
 * provided by objects from the architecture.
 */

/* write data to a port */
void prtset8(const uint16_t port, const uint8_t val);
void prtset16(const uint16_t port, const uint16_t val);;
void prtset32(const uint16_t port, const uint32_t val);

/* read data from a port */
uint8_t prtget8(const uint16_t port);
uint16_t prtget16(const uint16_t port);
uint32_t prtget32(const uint16_t port);

/* set a memory register */
void regset8(const uint32_t reg, const uint8_t val);
void regset16(const uint32_t reg, const uint16_t val);
void regset32(const uint32_t reg, const uint32_t val);

/* global description table initialization */
struct gdtp {
	uint16_t limit;
	void *pointer;
} __attribute__((packed));
void gdtset(struct gdtp gdtp);

/* interrupt description table initialization and activation */
struct idtp {
	uint16_t limit;
	void *pointer;
} __attribute((packed));
void idtset(struct idtp idtp);
void idtact(void);

/* interrupt handler for ignores and a list of handlers to register */
extern uint8_t irqnos[];
extern uint32_t irqhdls[];
void irqign(void);
void irqhdl0x00(void);
void irqhdl0x01(void);

#endif