/* ATA.h - This file is a part of NutsOS
 *
 * NutsOS
 * Copyright (C) 2013  Free Software Foundation, Inc.
 *
 * NutsOS 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.
 *
 * NutsOS 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.
 *
 * You should have received a copy of the GNU General Public License along
 * with NutsOS; If not, see <http://www.gnu.org/licenses/>.
 *
 * Valentin Verdier <valentin.verdier03@gmail.com>
 */

#pragma once
#ifndef NOS_ATA_H
#define NOS_ATA_H

#include "../types.h"

#define ATA_LBA_MODE 0xE0
#define ATA_CHS_MODE 0xA0

#define ATA_MASTER 0x00
#define ATA_SLAVE 0x10

#define ATA_0_PORT 0x1F0
#define ATA_1_PORT 0x170
#define ATA_2_PORT 0x1E8
#define ATA_3_PORT 0x168

#define ATA_0_CTRL_PORT 0x3F6
#define ATA_1_CTRL_PORT 0x376
#define ATA_2_CTRL_PORT 0x3E6
#define ATA_3_CTRL_PORT 0x366

#define ATA_CMD_READ 0x20
#define ATA_CMD_IDENTIFY 0xEC

typedef struct {
	T_word ata_port;
	T_word ata_ctrl_port;
	T_byte drive;
} T_ATA_device;


int ata_select_drive(unsigned int, unsigned int, T_ATA_device*);
void ata_read(T_ATA_device, T_dword, T_byte, void*);

#endif