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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 "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu/module.h"
#include "system/system.h"
#include "hw/acpi/acpi_aml_interface.h"
#include "hw/char/serial.h"
#include "hw/char/serial-isa.h"
#include "hw/isa/isa.h"
#include "hw/qdev-properties.h"
#include "migration/vmstate.h"
#include "qom/object.h"
OBJECT_DECLARE_SIMPLE_TYPE(ISASerialState, ISA_SERIAL)
struct ISASerialState {
ISADevice parent_obj;
uint32_t index;
uint32_t iobase;
uint32_t isairq;
SerialState state;
};
static const int isa_serial_io[MAX_ISA_SERIAL_PORTS] = {
0x3f8, 0x2f8, 0x3e8, 0x2e8
};
static const int isa_serial_irq[MAX_ISA_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_ISA_SERIAL_PORTS) {
error_setg(errp, "Max. supported number of ISA serial ports is %d.",
MAX_ISA_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->irq = isa_get_irq(isadev, isa->isairq);
qdev_realize(DEVICE(s), NULL, errp);
qdev_set_legacy_instance_id(dev, isa->iobase, 3);
memory_region_init_io(&s->io, OBJECT(isa), &serial_io_ops, s, "serial", 8);
isa_register_ioport(isadev, &s->io, isa->iobase);
}
static void serial_isa_build_aml(AcpiDevAmlIf *adev, Aml *scope)
{
ISASerialState *isa = ISA_SERIAL(adev);
Aml *dev;
Aml *crs;
crs = aml_resource_template();
aml_append(crs, aml_io(AML_DECODE16, isa->iobase, isa->iobase, 0x00, 0x08));
aml_append(crs, aml_irq_no_flags(isa->isairq));
dev = aml_device("COM%d", isa->index + 1);
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0501")));
aml_append(dev, aml_name_decl("_UID", aml_int(isa->index + 1)));
aml_append(dev, aml_name_decl("_STA", aml_int(0xf)));
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
}
static const VMStateDescription vmstate_isa_serial = {
.name = "serial",
.version_id = 3,
.minimum_version_id = 2,
.fields = (const VMStateField[]) {
VMSTATE_STRUCT(state, ISASerialState, 0, vmstate_serial, SerialState),
VMSTATE_END_OF_LIST()
}
};
static const Property serial_isa_properties[] = {
DEFINE_PROP_UINT32("index", ISASerialState, index, -1),
DEFINE_PROP_UINT32("iobase", ISASerialState, iobase, -1),
DEFINE_PROP_UINT32("irq", ISASerialState, isairq, -1),
};
static void serial_isa_class_initfn(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
AcpiDevAmlIfClass *adevc = ACPI_DEV_AML_IF_CLASS(klass);
dc->realize = serial_isa_realizefn;
dc->vmsd = &vmstate_isa_serial;
adevc->build_dev_aml = serial_isa_build_aml;
device_class_set_props(dc, serial_isa_properties);
set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
}
static void serial_isa_initfn(Object *o)
{
ISASerialState *self = ISA_SERIAL(o);
object_initialize_child(o, "serial", &self->state, TYPE_SERIAL);
qdev_alias_all_properties(DEVICE(&self->state), o);
}
static const TypeInfo serial_isa_info = {
.name = TYPE_ISA_SERIAL,
.parent = TYPE_ISA_DEVICE,
.instance_size = sizeof(ISASerialState),
.instance_init = serial_isa_initfn,
.class_init = serial_isa_class_initfn,
.interfaces = (InterfaceInfo[]) {
{ TYPE_ACPI_DEV_AML_IF },
{ },
},
};
static void serial_register_types(void)
{
type_register_static(&serial_isa_info);
}
type_init(serial_register_types)
static void serial_isa_init(ISABus *bus, int index, Chardev *chr)
{
DeviceState *dev;
ISADevice *isadev;
isadev = isa_new(TYPE_ISA_SERIAL);
dev = DEVICE(isadev);
qdev_prop_set_uint32(dev, "index", index);
qdev_prop_set_chr(dev, "chardev", chr);
isa_realize_and_unref(isadev, bus, &error_fatal);
}
void serial_hds_isa_init(ISABus *bus, int from, int to)
{
int i;
assert(from >= 0);
assert(to <= MAX_ISA_SERIAL_PORTS);
for (i = from; i < to; ++i) {
if (serial_hd(i)) {
serial_isa_init(bus, i, serial_hd(i));
}
}
}
void isa_serial_set_iobase(ISADevice *serial, hwaddr iobase)
{
ISASerialState *s = ISA_SERIAL(serial);
serial->ioport_id = iobase;
s->iobase = iobase;
memory_region_set_address(&s->state.io, s->iobase);
}
void isa_serial_set_enabled(ISADevice *serial, bool enabled)
{
memory_region_set_enabled(&ISA_SERIAL(serial)->state.io, enabled);
}
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