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/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2008-2009 coresystems GmbH
 *
 * 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; version 2 of the License.
 *
 * 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 <arch/io.h>
#include <console/console.h>
#include <cpu/x86/smm.h>
#include <southbridge/intel/i82801ix/nvs.h>
#include <southbridge/intel/i82801ix/i82801ix.h>
#include <ec/acpi/ec.h>

/* The southbridge SMI handler checks whether gnvs has a
 * valid pointer before calling the trap handler
 */
extern global_nvs_t *gnvs;

int mainboard_io_trap_handler(int smif)
{
	switch (smif) {
	case 0x99:
		printk(BIOS_DEBUG, "Sample\n");
		gnvs->smif = 0;
		break;
	default:
		return 0;
	}

	/* On success, the IO Trap Handler returns 0
	 * On failure, the IO Trap Handler returns a value != 0
	 *
	 * For now, we force the return value to 0 and log all traps to
	 * see what's going on.
	 */
	//gnvs->smif = 0;
	return 1;
}

void mainboard_smi_gpi(u32 gpi_sts)
{
	if (gpi_sts & (1 << 1)) {
		printk(BIOS_DEBUG, "EC/SMI\n");
		/* TODO */
	}
}

int mainboard_smi_apmc(u8 apmc)
{
	switch (apmc) {
	case APM_CNT_ACPI_ENABLE:
		send_ec_command(0x05); /* Set_SMI_Disable */
		send_ec_command(0xaa); /* Set_ACPI_Enable */
		break;

	case APM_CNT_ACPI_DISABLE:
		send_ec_command(0x04); /* Set_SMI_Enable */
		send_ec_command(0xab); /* Set_ACPI_Disable */
		break;
	}
	return 0;
}