Archipelago » qemu

/*

 * QEMU 16550A UART emulation

 *

 * Copyright (c) 2003-2004 Fabrice Bellard

 * Copyright (c) 2008 Citrix Systems, Inc.

 *

 * 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.

 */

#include "hw/char/serial.h"

#include "hw/isa/isa.h"

#define ISA_SERIAL(obj) OBJECT_CHECK(ISASerialState, (obj), TYPE_ISA_SERIAL)

typedef struct ISASerialState {

    ISADevice parent_obj;

    uint32_t index;

    uint32_t iobase;

    uint32_t isairq;

    SerialState state;

} ISASerialState;

static const int isa_serial_io[MAX_SERIAL_PORTS] = {

    0x3f8, 0x2f8, 0x3e8, 0x2e8

};

static const int isa_serial_irq[MAX_SERIAL_PORTS] = {

    4, 3, 4, 3

};

static void serial_isa_realizefn(DeviceState *dev, Error **errp)

{

    static int index;

    ISADevice *isadev = ISA_DEVICE(dev);

    ISASerialState *isa = ISA_SERIAL(dev);

    SerialState *s = &isa->state;

    if (isa->index == -1) {

        isa->index = index;

    }

    if (isa->index >= MAX_SERIAL_PORTS) {

        error_setg(errp, "Max. supported number of ISA serial ports is %d.",

                   MAX_SERIAL_PORTS);

        return;

    }

    if (isa->iobase == -1) {

        isa->iobase = isa_serial_io[isa->index];

    }

    if (isa->isairq == -1) {

        isa->isairq = isa_serial_irq[isa->index];

    }

    index++;

    s->baudbase = 115200;

    isa_init_irq(isadev, &s->irq, isa->isairq);

    serial_realize_core(s, errp);

    qdev_set_legacy_instance_id(dev, isa->iobase, 3);

    memory_region_init_io(&s->io, &serial_io_ops, s, "serial", 8);

    isa_register_ioport(isadev, &s->io, isa->iobase);

}

static const VMStateDescription vmstate_isa_serial = {

    .name = "serial",

    .version_id = 3,

    .minimum_version_id = 2,

    .fields = (VMStateField[]) {

        VMSTATE_STRUCT(state, ISASerialState, 0, vmstate_serial, SerialState),

        VMSTATE_END_OF_LIST()

    }

};

static Property serial_isa_properties[] = {

    DEFINE_PROP_UINT32("index",  ISASerialState, index,   -1),

    DEFINE_PROP_HEX32("iobase",  ISASerialState, iobase,  -1),

    DEFINE_PROP_UINT32("irq",    ISASerialState, isairq,  -1),

    DEFINE_PROP_CHR("chardev",   ISASerialState, state.chr),

    DEFINE_PROP_UINT32("wakeup", ISASerialState, state.wakeup, 0),

    DEFINE_PROP_END_OF_LIST(),

};

static void serial_isa_class_initfn(ObjectClass *klass, void *data)

{

    DeviceClass *dc = DEVICE_CLASS(klass);

    dc->realize = serial_isa_realizefn;

    dc->vmsd = &vmstate_isa_serial;

    dc->props = serial_isa_properties;

}

static const TypeInfo serial_isa_info = {

    .name          = TYPE_ISA_SERIAL,

    .parent        = TYPE_ISA_DEVICE,

    .instance_size = sizeof(ISASerialState),

    .class_init    = serial_isa_class_initfn,

};

static void serial_register_types(void)

{

    type_register_static(&serial_isa_info);

}

type_init(serial_register_types)

bool serial_isa_init(ISABus *bus, int index, CharDriverState *chr)

{

    ISADevice *dev;

    dev = isa_try_create(bus, TYPE_ISA_SERIAL);

    if (!dev) {

        return false;

    }

    qdev_prop_set_uint32(&dev->qdev, "index", index);

    qdev_prop_set_chr(&dev->qdev, "chardev", chr);

    if (qdev_init(&dev->qdev) < 0) {

        return false;

    }

    return true;

}