/*
 * This file is part of the superiotool project.
 *
 * 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"

#define DEVICE_ID_REG_OLD	0x09

#define DEVICE_ID_REG		0x20
#define DEVICE_REV_REG		0x21

/**
 * The ID entries must be in 0xYYZ format, where YY is the device ID,
 * and Z is bits 7..4 of the device revision register. We do not match
 * bits 3..0 of the device revision here (at least for newer Super I/Os).
 *
 * But some of the older versions use both bytes (0x20 and 0x21), where
 * register 0x21 holds the ID and the full 8 bits of 0x21 hold the revision.
 *
 * Some other Super I/Os only use bits 3..0 of 0x09 as ID.
 */
const static struct superio_registers reg_table[] = {
	{0x527, "W83977CTF", {
		{EOT}}},
	{0x52f, "W83977EF/EG", {
		{EOT}}},
	{0x595, "W83627SF", {
		{EOT}}},
	{0x601, "W83697HF/F/HG", { /* No G version? */
		{NOLDN, NULL,
			{0x07,0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x28,0x29,
			 0x2a,EOT},
			{NANA,0x60,NANA,0xff,0x00,0x00,0x00,0x00,0x00,0x00,
			 MISC,EOT}},
		/* Some register defaults depend on the value of PNPCSV. */
		{0x0, "Floppy",
			{0x30,0x60,0x61,0x70,0x74,0xf0,0xf1,0xf2,0xf4,
			 0xf5,EOT},
			{0x01,0x03,0xf0,0x06,0x02,0x0e,0x00,0xff,0x00,
			 0x00,EOT}},
		{0x1, "Parallel port",
			{0x30,0x60,0x61,0x70,0x74,0xf0,EOT},
			{0x01,0x03,0x78,0x07,0x04,0x3f,EOT}},
		{0x2, "COM1",
			{0x30,0x60,0x61,0x70,0xf0,EOT},
			{0x01,0x03,0xf8,0x04,0x00,EOT}},
		{0x3, "COM2",
			{0x30,0x60,0x61,0x70,0xf0,0xf1,EOT},
			{0x01,0x02,0xf8,0x03,0x00,0x00,EOT}},
		{0x6, "Consumer IR",
			{0x30,0x60,0x61,0x70,EOT},
			{0x00,0x00,0x00,0x00,EOT}},
		{0x7, "Game port, GPIO 1",
			{0x30,0x60,0x61,0x62,0x63,0xf0,0xf1,0xf2,EOT},
			{0x00,0x02,0x01,0x00,0x00,0xff,0x00,0x00,EOT}},
		{0x8, "MIDI port, GPIO 5",
			{0x30,0x60,0x61,0x62,0x63,0x70,0xf0,0xf1,0xf2,0xf3,
			 0xf4,0xf5,EOT},
			{0x00,0x03,0x30,0x00,0x00,0x09,0xff,0x00,0x00,0x00,
			 0x00,0x00,EOT}},
		{0x9, "GPIO 2, GPIO 3, GPIO 4",
			{0x30,0x60,0x61,0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,
			 0xf7,0xf8,0xf5,EOT},
			{0x00,0x00,0x00,0xff,0x00,0x00,0xff,0x00,0x00,0xff,
			 0x00,0x00,0x00,EOT}},
		{0xa, "ACPI",
			{0x30,0x70,0xe0,0xe1,0xe2,0xe5,0xe6,0xe7,
			 0xf0,0xf1,0xf3,0xf4,0xf6,0xf7,0xf9,EOT},
			{0x00,0x00,0x00,0x00,NANA,0x00,0x00,0x00,
			 0x00,0x00,0x00,0x00,0x00,0x00,0x00,EOT}},
		{0xb, "Hardware monitor",
			{0x30,0x60,0x61,0x70,EOT},
			{0x00,0x00,0x00,0x00,EOT}},
		{EOT}}},
	{0x610, "W83L517D/D-F", {
		{EOT}}},
	{0x681, "W83697UF/UG", {
		{EOT}}},
	{0x708, "W83637HF", {
		{EOT}}},
	{0x828, "W83627THF/THG", { /* We assume rev is bits 3..0 of 0x21. */
		{EOT}}},
	{0x886, "W83627EHF/EF/EHG/EG", {
		{NOLDN, NULL,
			{0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,
			 0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f,EOT},
			{0x88,MISC,0xff,0x00,MISC,0x00,MISC,RSVD,0x50,
			 0x04,0x00,RSVD,0x00,0x21,0x00,0x00,EOT}},
		{0x0, "Floppy",
			{0x30,0x60,0x61,0x70,0x74,0xf0,0xf1,0xf2,0xf4,
			 0xf5,EOT},
			{0x01,0x03,0xf0,0x06,0x02,0x8e,0x00,0xff,0x00,
			 0x00,EOT}},
		{0x1, "Parallel port",
			{0x30,0x60,0x61,0x70,0x74,0xf0,EOT},
			{0x01,0x03,0x78,0x07,0x04,0x3f,EOT}},
		{0x2, "COM1",
			{0x30,0x60,0x61,0x70,0xf0,EOT},
			{0x01,0x03,0xf8,0x04,0x00,EOT}},
		{0x3, "COM2",
			{0x30,0x60,0x61,0x70,0xf0,0xf1,EOT},
			{0x01,0x02,0xf8,0x03,0x00,0x00,EOT}},
		{0x5, "Keyboard",
			{0x30,0x60,0x61,0x62,0x63,0x70,0x72,0xf0,EOT},
			{0x01,0x00,0x60,0x00,0x64,0x01,0x0c,0x83,EOT}},
		{0x6, "Serial flash interface",
			{0x30,0x62,0x63,EOT},
			{0x00,0x00,0x00,EOT}},
		{0x7, "GPIO 1, GPIO 6, game port, MIDI port",
			{0x30,0x60,0x61,0x62,0x63,0x70,0xf0,0xf1,0xf2,0xf3,
			 0xf4,0xf5,0xf6,0xf7,EOT},
			{0x00,0x02,0x01,0x03,0x30,0x09,0xff,0x00,0x00,0x00,
			 0xff,0x00,0x00,0x00,EOT}},
		{0x8, "WDTO#, PLED",
			{0x30,0xf5,0xf6,0xf7,EOT},
			{0x00,0x00,0x00,0x00,EOT}},
		{0x9, "GPIO 2, GPIO 3, GPIO 4, GPIO 5, SUSLED",
			{0x30,0xe0,0xe1,0xe2,0xe3,0xe4,0xe5,0xf0,0xf1,0xf2,
			 0xf3,0xf4,0xf5,0xf6,0xf7,EOT},
			{0x00,0xff,0x00,0x00,0xff,0x00,0x00,0xff,0x00,0x00,
			 0x00,0xff,0x00,0x00,0x00,EOT}},
		{0xa, "ACPI",
			{0x30,0x70,0xe0,0xe1,0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,
			 0xe8,0xf2,0xf3,0xf4,0xf6,0xf7,EOT},
			{0x00,0x00,0x01,0x00,0xff,0x08,0x00,RSVD,0x00,0x00,
			 RSVD,0x7c,0x00,0x00,0x00,0x00,EOT}},
		{0xb, "Hardware monitor",
			{0x30,0x60,0x61,0x70,0xf0,0xf1,EOT},
			{0x00,0x00,0x00,0x00,0xc1,0x00,EOT}},
		{EOT}}},
	{0xa23, "W83627UHG", {
		{EOT}}},
	{0x9771, "W83977F-A/G-A/AF-A/AG-A", {
		{EOT}}},
	{0x9773, "W83977TF", {
		{EOT}}},
	{0x9774, "W83977ATF", {
		{EOT}}},
	{0x52, "W83627HF/F/HG/G", {
		{EOT}}},
	{0xa, "W83877F", {
		{EOT}}},
	{0xc, "W83877TF", {
		{EOT}}},
	{0xd, "W83877ATF", {
		{EOT}}},
	{EOT}
};

static void enter_conf_mode_winbond_88(uint16_t port)
{
	outb(0x88, port);
}

static void enter_conf_mode_winbond_89(uint16_t port)
{
	outb(0x89, port);
}

static void enter_conf_mode_winbond_86(uint16_t port)
{
	outb(0x86, port);
	outb(0x86, port);
}

void probe_idregs_winbond_helper(const char *init, uint16_t port)
{
	uint16_t id;
	uint8_t devid, rev, olddevid;

	devid = regval(port, DEVICE_ID_REG);
	rev = regval(port, DEVICE_REV_REG);
	olddevid = regval(port, DEVICE_ID_REG_OLD);

	if (devid == 0x52)
		id = devid;				 /* ID only */
	else if ((devid == 0x97) && ((rev & 0xf0) == 7))
		id = (devid << 8) | rev;		 /* ID and rev */
	else
		id = (devid << 4) | ((rev & 0xf0) >> 4); /* ID and rev[3..0] */

	if (olddevid == 0x0a || olddevid == 0x0c || olddevid == 0x0d)
		id = olddevid & 0x0f;			 /* ID[3..0] */

	if (superio_unknown(reg_table, id)) {
		no_superio_found("Winbond", init, port);
		exit_conf_mode_winbond_fintek_ite_8787(port);
		return;
	}

	if (olddevid == 0x0a || olddevid == 0x0c || olddevid == 0x0d)
		printf("Found Winbond %s (id=0x%02x) at 0x%x\n",
		       get_superio_name(reg_table, id), olddevid, port);
	else
		printf("Found Winbond %s (id=0x%02x, rev=0x%02x) at 0x%x\n",
		       get_superio_name(reg_table, id), devid, rev, port);

	/* TODO: Special notes in dump output for the MISC entries. */
	dump_superio("Winbond", reg_table, port, id);
	dump_superio_readable(port); /* TODO */
}

void probe_idregs_winbond(uint16_t port)
{
	/* TODO: Not all init sequences are valid for all ports. */

	enter_conf_mode_winbond_88(port);
	probe_idregs_winbond_helper("(init=0x88) ", port);
	exit_conf_mode_winbond_fintek_ite_8787(port);

	enter_conf_mode_winbond_89(port);
	probe_idregs_winbond_helper("(init=0x89) ", port);
	exit_conf_mode_winbond_fintek_ite_8787(port);

	enter_conf_mode_winbond_86(port);
	probe_idregs_winbond_helper("(init=0x86,0x86) ", port);
	exit_conf_mode_winbond_fintek_ite_8787(port);

	enter_conf_mode_winbond_fintek_ite_8787(port);
	probe_idregs_winbond_helper("(init=0x87,0x87) ", port);
	exit_conf_mode_winbond_fintek_ite_8787(port);
}