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/*
* 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;
}
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