/*
 * VARCem	Virtual ARchaeological Computer EMulator.
 *		An emulator of (mostly) x86-based PC systems and devices,
 *		using the ISA,EISA,VLB,MCA  and PCI system buses, roughly
 *		spanning the era between 1981 and 1995.
 *
 *		This file is part of the VARCem Project.
 *
 *		Implementation of the DTK PII-151B and PII-158B cards.
 *
 *		These are DP8473-based floppy controller ISA cards for XT
 *		class systems, and allow usage of standard and high-density
 *		drives on them. They have their own BIOS which takes over
 *		from the standard system BIOS.
 *
 * Author:	Fred N. van Kempen, <decwiz@yahoo.com>
 *
 *		Copyright 2019 Fred N. van Kempen.
 *
 *		Redistribution and  use  in source  and binary forms, with
 *		or  without modification, are permitted  provided that the
 *		following conditions are met:
 *
 *		1. Redistributions of source code must retain the entire
 *		   above notice, this list of conditions and the following
 *		   disclaimer.
 *
 *		2. Redistributions in binary form must reproduce the above
 *		   copyright  notice,  this list  of  conditions  and  the
 *		   following disclaimer in  the documentation and/or other
 *		   materials provided with the distribution.
 *
 *		3. Neither the  name of the copyright holder nor the names
 *		   of  its  contributors may be used to endorse or promote
 *		   products  derived from  this  software without specific
 *		   prior written permission.
 *
 * THIS SOFTWARE  IS  PROVIDED BY THE  COPYRIGHT  HOLDERS AND CONTRIBUTORS
 * "AS IS" AND  ANY EXPRESS  OR  IMPLIED  WARRANTIES,  INCLUDING, BUT  NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE  ARE  DISCLAIMED. IN  NO  EVENT  SHALL THE COPYRIGHT
 * HOLDER OR  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL,  EXEMPLARY,  OR  CONSEQUENTIAL  DAMAGES  (INCLUDING,  BUT  NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE  GOODS OR SERVICES;  LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  AND ON  ANY
 * THEORY OF  LIABILITY, WHETHER IN  CONTRACT, STRICT  LIABILITY, OR  TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING  IN ANY  WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <wchar.h>
#define HAVE_STDARG_H
#include <86box/86box.h>
#include <86box/device.h>
#include <86box/io.h>
#include <86box/mem.h>
#include <86box/rom.h>
#include <86box/machine.h>
#include <86box/timer.h>
#include <86box/fdd.h>
#include <86box/fdc.h>
#include <86box/fdc_ext.h>

#define ROM_PII_151B L"roms/floppy/dtk/pii-151b.rom"
#define ROM_PII_158B L"roms/floppy/dtk/pii-158b.rom"

#ifdef ENABLE_PII15XB_LOG
int pii15xb_do_log = ENABLE_PII15XB_LOG;

static void
pii15xb_log(const char *fmt, ...)
{
    va_list ap;

    if (fdc_do_log)
    {
        va_start(ap, fmt);
        pclog_ex(fmt, ap);
        va_end(ap);
    }
}
#else
#define pii15xb_log(fmt, ...)
#endif

typedef struct
{
    const char *name;
    int type;

    uint32_t bios_addr;
    rom_t bios_rom;

    fdc_t *fdc;
} pii_t;

static void
pii_close(void *priv)
{
    pii_t *dev = (pii_t *)priv;

    free(dev);
}

static void *
pii_init(const device_t *info)
{
    pii_t *dev;

    dev = (pii_t *)malloc(sizeof(pii_t));
    memset(dev, 0x00, sizeof(pii_t));
    dev->type = info->local;

    dev->bios_addr = device_get_config_hex20("bios_addr");

    if (dev->bios_addr != 0)
        rom_init(&dev->bios_rom, (dev->type == 0x158) ? ROM_PII_158B : ROM_PII_151B, dev->bios_addr, 0x2000, 0x1ffff, 0, MEM_MAPPING_EXTERNAL);

    dev->fdc = device_add(&fdc_at_device); //Our DP8473 emulation is broken. If fixed this has to be changed!

    pii15xb_log("PII15XB: %s (I/O=%04X, flags=%08x)\n", info->name, dev->fdc->base_address, dev->fdc->flags);

    return (dev);
}

static int pii_151b_available(void)
{
    return rom_present(ROM_PII_151B);
}

static int pii_158_available(void)
{
    return rom_present(ROM_PII_158B);
}


static const device_config_t pii_config[] = {
    {
	"bios_addr", "BIOS address", CONFIG_HEX20, "", 0x0ce000, "", { 0 },
	{
		{
			"Disabled", 0
		},
		{
			"CA00H", 0x0ca000
		},
		{
			"CC00H", 0x0cc000
		},
		{
			"CE00H", 0x0ce000
		},
		{
			""
		}
	}
    },
    {
	"", "", -1
    }
};

const device_t fdc_pii151b_device = {
    "DTK PII-151B (MiniMicro) Floppy Drive Controller",
    DEVICE_ISA,
    151,
    pii_init,
    pii_close,
    NULL,
    {pii_151b_available},
    NULL,
    NULL,
    pii_config};

const device_t fdc_pii158b_device = {
    "DTK PII-158B (MiniMicro4) Floppy Drive Controller",
    DEVICE_ISA,
    158,
    pii_init,
    pii_close,
    NULL,
    {pii_158_available},
    NULL,
    NULL,
    pii_config};