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/*

 * QEMU 8253/8254 interval timer emulation

 *

 * Copyright (c) 2003-2004 Fabrice Bellard

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

#ifndef HW_I8254_H

#define HW_I8254_H

#include "hw.h"

#include "isa.h"

#define PIT_FREQ 1193182

typedef struct PITChannelInfo {

    int gate;

    int mode;

    int initial_count;

    int out;

} PITChannelInfo;

static inline ISADevice *pit_init(ISABus *bus, int base, int isa_irq,

                                  qemu_irq alt_irq)

{

    ISADevice *dev;

    dev = isa_create(bus, "isa-pit");

    qdev_prop_set_uint32(&dev->qdev, "iobase", base);

    qdev_init_nofail(&dev->qdev);

    qdev_connect_gpio_out(&dev->qdev, 0,

                          isa_irq >= 0 ? isa_get_irq(dev, isa_irq) : alt_irq);

    return dev;

}

static inline ISADevice *kvm_pit_init(ISABus *bus, int base)

{

    ISADevice *dev;

    dev = isa_create(bus, "kvm-pit");

    qdev_prop_set_uint32(&dev->qdev, "iobase", base);

    qdev_init_nofail(&dev->qdev);

    return dev;

}

void pit_set_gate(ISADevice *dev, int channel, int val);

void pit_get_channel_info(ISADevice *dev, int channel, PITChannelInfo *info);

#endif /* !HW_I8254_H */