/*
 * This file is part of the flashrom project.
 *
 * Copyright (C) 2010 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
 */

#if defined(__i386__) || defined(__x86_64__)

#include <stdlib.h>
#include <string.h>
#include "flash.h"
#include "programmer.h"
#include "hwaccess.h"

#define BIOS_ROM_ADDR		0x90
#define BIOS_ROM_DATA		0x94

#define REG_FLASH_ACCESS	0x58

#define PCI_VENDOR_ID_HPT	0x1103

const struct dev_entry ata_hpt[] = {
	{0x1103, 0x0004, NT, "Highpoint", "HPT366/368/370/370A/372/372N"},
	{0x1103, 0x0005, NT, "Highpoint", "HPT372A/372N"},
	{0x1103, 0x0006, NT, "Highpoint", "HPT302/302N"},

	{0},
};

static void atahpt_chip_writeb(const struct flashctx *flash, uint8_t val,
			       chipaddr addr);
static uint8_t atahpt_chip_readb(const struct flashctx *flash,
				 const chipaddr addr);
static const struct par_programmer par_programmer_atahpt = {
		.chip_readb		= atahpt_chip_readb,
		.chip_readw		= fallback_chip_readw,
		.chip_readl		= fallback_chip_readl,
		.chip_readn		= fallback_chip_readn,
		.chip_writeb		= atahpt_chip_writeb,
		.chip_writew		= fallback_chip_writew,
		.chip_writel		= fallback_chip_writel,
		.chip_writen		= fallback_chip_writen,
};

static int atahpt_shutdown(void *data)
{
	/* Flash access is disabled automatically by PCI restore. */
	pci_cleanup(pacc);
	return 0;
}

int atahpt_init(void)
{
	uint32_t reg32;

	if (rget_io_perms())
		return 1;

	io_base_addr = pcidev_init(PCI_BASE_ADDRESS_4, ata_hpt);

	/* Enable flash access. */
	reg32 = pci_read_long(pcidev_dev, REG_FLASH_ACCESS);
	reg32 |= (1 << 24);
	rpci_write_long(pcidev_dev, REG_FLASH_ACCESS, reg32);

	if (register_shutdown(atahpt_shutdown, NULL))
		return 1;

	register_par_programmer(&par_programmer_atahpt, BUS_PARALLEL);

	return 0;
}

static void atahpt_chip_writeb(const struct flashctx *flash, uint8_t val,
			       chipaddr addr)
{
	OUTL((uint32_t)addr, io_base_addr + BIOS_ROM_ADDR);
	OUTB(val, io_base_addr + BIOS_ROM_DATA);
}

static uint8_t atahpt_chip_readb(const struct flashctx *flash,
				 const chipaddr addr)
{
	OUTL((uint32_t)addr, io_base_addr + BIOS_ROM_ADDR);
	return INB(io_base_addr + BIOS_ROM_DATA);
}

#else
#error PCI port I/O access is not supported on this architecture yet.
#endif