/*
 * This file is part of the LinuxBIOS project.
 *
 * Copyright (C) 2007 Carl-Daniel Hailfinger
 * Copyright (C) 2007 Uwe Hermann <uwe@hermann-uwe.de>
 *
 * 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 2 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#include "superiotool.h"

const static struct superio_registers reg_table[] = {
	{0x8702, "IT8702", {
		{EOT}}},
	{0x8705, "IT8705 or IT8700", {
		{EOT}}},
	{0x8708, "IT8708", {
		{NOLDN,
			{0x07,0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,
			 0x29,0x2a,0x2e,0x2f,EOT},
			{NANA,0x87,0x08,0x00,0x00,NANA,0x3f,0x00,0xff,0xff,
			 0xff,0xff,0x00,0x00,EOT}},
		{0x0,
			{0x30,0x60,0x61,0x70,0x74,0xf0,0xf1,EOT},
			{0x00,0x03,0xf0,0x06,0x02,0x00,0x00,EOT}},
		{0x1,
			{0x30,0x60,0x61,0x70,0xf0,EOT},
			{0x00,0x03,0xf8,0x04,0x00,EOT}},
		{0x2,
			{0x30,0x60,0x61,0x70,0xf0,0xf1,0xf2,0xf3,EOT},
			{0x00,0x02,0xf8,0x03,0x00,0x50,0x00,0x7f,EOT}},
		{0x3,
			{0x30,0x60,0x61,0x62,0x63,0x64,0x65,0x70,0x74,
			 0xf0,EOT},
			{0x00,0x03,0x78,0x07,0x78,0x00,0x80,0x07,0x03,
			 0x03,EOT}},
		{0x4,
			{0xe0,0xe1,0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,
			 0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,EOT},
			{NANA,NANA,0x00,0x00,0x00,0x00,0x00,0x00,
			 0x00,0x00,0x00,0x00,0x00,NANA,NANA,EOT}},
		{0x5,	/* Note: 0x30 can actually be 0x00 _or_ 0x01. */
			{0x30,0x60,0x61,0x62,0x63,0x70,0x71,0xf0,EOT},
			{0x01,0x00,0x60,0x00,0x64,0x01,0x02,0x00,EOT}},
		{0x6,
			{0x30,0x70,0x71,0xf0,EOT},
			{0x00,0x0c,0x02,0x00,EOT}},
		{0x7,
			{0x70,0xb0,0xb1,0xb2,0xb3,0xb4,0xb5,0xb8,0xb9,0xba,
			 0xbb,0xbc,0xbd,0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc8,
			 0xc9,0xca,0xcb,0xcc,0xcd,0xd0,0xd1,0xd2,0xd3,0xd4,
			 0xd5,0xd6,0xd7,0xd8,0xd9,0xda,0xdb,0xdc,0xf0,0xf1,
			 0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,
			 0xfc,EOT},
			{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
			 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
			 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
			 0x00,0x00,NANA,NANA,NANA,NANA,NANA,NANA,0x00,0x00,
			 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,NANA,
			 0x00,EOT}},
		{0x8,
			{0x30,0x60,0x61,EOT},
			{0x00,0x02,0x01,EOT}},
		{0x9,
			{0x30,0x60,0x61,0x70,0xf0,EOT},
			{0x00,0x03,0x10,0x0b,0x00,EOT}},
		{0xa,
			{0x30,0x60,0x61,0x70,0xf0,EOT},
			{0x00,0x03,0x00,0x0a,0x00,EOT}},
		{EOT}}},
	{0x8710, "IT8710", {
		{EOT}}},
	{0x8712, "IT8712", {
		{NOLDN,
			{0x07,0x20,0x21,0x22,0x23,0x24,0x2b,EOT},
			{NANA,0x87,0x12,0x08,0x00,0x00,0x00,EOT}},
		{0x0,
			{0x30,0x60,0x61,0x70,0x74,0xf0,0xf1,EOT},
			{0x00,0x03,0xf0,0x06,0x02,0x00,0x00,EOT}},
		{0x1,
			{0x30,0x60,0x61,0x70,0xf0,0xf1,0xf2,0xf3,EOT},
			{0x00,0x03,0xf8,0x04,0x00,0x50,0x00,0x7f,EOT}},
		{0x2,
			{0x30,0x60,0x61,0x70,0xf0,0xf1,0xf2,0xf3,EOT},
			{0x00,0x02,0xf8,0x03,0x00,0x50,0x00,0x7f,EOT}},
		{0x3,
			{0x30,0x60,0x61,0x62,0x63,0x70,0x74,0xf0,EOT},
			{0x00,0x03,0x78,0x07,0x78,0x07,0x03,0x03,EOT}},
		{0x4,
			{0x30,0x60,0x61,0x62,0x63,0x70,0xf0,0xf1,0xf2,0xf3,
			 0xf4,0xf5,0xf6,EOT},
			{0x00,0x02,0x90,0x02,0x30,0x09,0x00,0x00,0x00,0x00,
			 0x00,NANA,NANA,EOT}},
		{0x5,
			{0x30,0x60,0x61,0x62,0x63,0x70,0x71,0xf0,EOT},
			{0x01,0x00,0x60,0x00,0x64,0x01,0x02,0x08,EOT}},
		{0x6,
			{0x30,0x70,0x71,0xf0,EOT},
			{0x00,0x0c,0x02,0x00,EOT}},
		{0x7,
			{0x25,0x26,0x27,0x28,0x29,0x2a,0x2c,0x60,0x61,0x62,
			 0x63,0x64,0x65,0x70,0x71,0x72,0x73,0x74,0xb0,0xb1,
			 0xb2,0xb3,0xb4,0xb5,0xb8,0xb9,0xba,0xbb,0xbc,0xbd,
			 0xc0,0xc1,0xc2,0xc3,0xc4,0xc8,0xc9,0xca,0xcb,0xcc,
			 0xe0,0xe1,0xe2,0xe3,0xe4,0xf0,0xf1,0xf2,0xf3,0xf4,
			 0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,EOT},
			{0x01,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,
			 0x00,0x00,0x00,0x00,0x00,0x30,0x38,0x00,0x00,0x00,
			 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
			 0x01,0x00,0x00,0x40,0x00,0x01,0x00,0x00,0x40,0x00,
			 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
			 0x00,0x00,0x00,0x00,0x00,0x00,0x00,NANA,0x00,EOT}},
		{0x8,
			{0x30,0x60,0x61,0x70,0xf0,EOT},
			{0x00,0x03,0x00,0x0a,0x00,EOT}},
		{0x9,
			{0x30,0x60,0x61,EOT},
			{0x00,0x02,0x01,EOT}},
		{0xa,
			{0x30,0x60,0x61,0x70,0xf0,EOT},
			{0x00,0x03,0x10,0x0b,0x00,EOT}},
		{EOT}}},
	{0x8716, "IT8716", {
		{NOLDN,
			{0x07,0x20,0x21,0x22,0x23,0x24,0x2b,EOT},
			{NANA,0x87,0x16,0x01,0x00,0x00,0x00,EOT}},
		{0x0,
			{0x30,0x60,0x61,0x70,0x74,0xf0,0xf1,EOT},
			{0x00,0x03,0xf0,0x06,0x02,0x00,0x00,EOT}},
		{0x1,
			{0x30,0x60,0x61,0x70,0xf0,0xf1,0xf2,0xf3,EOT},
			{0x00,0x03,0xf8,0x04,0x00,0x50,0x00,0x7f,EOT}},
		{0x2,
			{0x30,0x60,0x61,0x70,0xf0,0xf1,0xf2,0xf3,EOT},
			{0x00,0x02,0xf8,0x03,0x00,0x50,0x00,0x7f,EOT}},
		{0x3,
			{0x30,0x60,0x61,0x62,0x63,0x70,0x74,0xf0,EOT},
			{0x00,0x03,0x78,0x07,0x78,0x07,0x03,0x03,EOT}},
		{0x4,
			{0x30,0x60,0x61,0x62,0x63,0x70,0xf0,0xf1,0xf2,0xf3,
			 0xf4,0xf5,0xf6,EOT},
			{0x00,0x02,0x90,0x02,0x30,0x09,0x00,0x00,0x00,0x00,
			 0x00,NANA,NANA,EOT}},
		{0x5,
			{0x30,0x60,0x61,0x62,0x63,0x70,0x71,0xf0,EOT},
			{0x01,0x00,0x60,0x00,0x64,0x01,0x02,0x00,EOT}},
		{0x6,
			{0x30,0x70,0x71,0xf0,EOT},
			{0x00,0x0c,0x02,0x00,EOT}},
		{0x7,
			{0x25,0x26,0x27,0x28,0x29,0x2a,0x2c,0x60,0x61,0x62,
			 0x63,0x64,0x65,0x70,0x71,0x72,0x73,0x74,0xb0,0xb1,
			 0xb2,0xb3,0xb4,0xb5,0xb8,0xb9,0xba,0xbb,0xbc,0xbd,
			 0xc0,0xc1,0xc2,0xc3,0xc4,0xc8,0xc9,0xca,0xcb,0xcc,
			 0xe0,0xe1,0xe2,0xe3,0xe4,0xf0,0xf1,0xf2,0xf3,0xf4,
			 0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,EOT},
			{0x01,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,
			 0x00,0x00,0x00,0x00,0x00,0x20,0x38,0x00,0x00,0x00,
			 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
			 0x01,0x00,0x00,0x40,0x00,0x01,0x00,0x00,0x40,0x00,
			 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
			 0x00,0x00,0x00,0x00,0x00,0x00,0x00,NANA,0x00,EOT}},
		{0x8,
			{0x30,0x60,0x61,0x70,0xf0,EOT},
			{0x00,0x03,0x00,0x0a,0x00,EOT}},
		{0x9,
			{0x30,0x60,0x61,EOT},
			{0x00,0x02,0x01,EOT}},
		{0xa,
			{0x30,0x60,0x61,0x70,0xf0,EOT},
			{0x00,0x03,0x10,0x0b,0x00,EOT}},
		{EOT}}},
	{0x8718, "IT8718", {
		{EOT}}},
	{EOT}
};

void dump_ite(unsigned short port, unsigned short id)
{
	int i;

	/* TODO: Get datasheets for IT8711 and IT8712. */
	switch (id) {
	case 0x8702:
	case 0x8705: /* IT8700F or IT8705F */
	case 0x8708:
	case 0x8710:
	case 0x8712:
	case 0x8716:
	/* Note: IT8726F has ID 0x8726 (datasheet wrongly says 0x8716). */
	case 0x8718:
		dump_superio("ITE", reg_table, port, id);
		break;
	default:
		printf("Unknown ITE chip, id=%04x\n", id);
		for (i = 0x20; i <= 0x24; i++)
			printf("index %02x=%02x\n", i, regval(port, i));
		break;
	}
}

void probe_idregs_ite(unsigned short port)
{
	unsigned int id, chipver;

	/* Enable configuration sequence (ITE uses this for newer IT87[012]x)
	 * IT871[01] uses 0x87, 0x87 -> fintek detection should handle it
	 * IT8708 uses 0x87, 0x87 -> fintek detection should handle it
	 * IT8761 uses 0x87, 0x61, 0x55, 0x55/0xaa
	 * IT86xx series uses different ports
	 * IT8661 uses 0x86, 0x61, 0x55/0xaa, 0x55/0xaa and 32 more writes
	 * IT8673 uses 0x86, 0x80, 0x55/0xaa, 0x55/0xaa and 32 more writes
	 */
	outb(0x87, port);
	outb(0x01, port);
	outb(0x55, port);
	if (port == 0x2e)
		outb(0x55, port);
	else
		outb(0xAA, port);

	/* Read Chip ID Byte 1. */
	id = regval(port, 0x20);
	if (id != 0x87) {
		if (inb(port) == 0xff)
			printf("No Super I/O chip found at 0x%04x\n", port);
		else
			printf("Probing 0x%04x, failed (0x%02x), data returns 0x%02x\n", port, inb(port), inb(port + 1));
		return;
	}

	id <<= 8;

	/* Read Chip ID Byte 2. */
	id |= regval(port, 0x21);

	/* Read chip version, only bits 3..0 for all IT87xx. */
	chipver = regval(port, 0x22) & 0x0f;

	printf("Super I/O found at 0x%02x: id=0x%04x, chipver=0x%01x\n",
	       port, id, chipver);

	switch (id) {
	case 0x8702:
	case 0x8705:
	case 0x8708:
	case 0x8712:
	case 0x8716:
	case 0x8718:
	case 0x8726:
		dump_ite(port, id);
		break;
	default:
		printf("No dump for ID 0x%04x\n", id);
		break;
	}
	regwrite(port, 0x02, 0x02);	/* Exit MB PnP mode. */
}