138 lines
4.1 KiB
C
138 lines
4.1 KiB
C
/*
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* QEMU 16550A UART emulation
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*
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* Copyright (c) 2003-2004 Fabrice Bellard
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* Copyright (c) 2008 Citrix Systems, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw/char/serial.h"
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#include "hw/isa/isa.h"
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#define ISA_SERIAL(obj) OBJECT_CHECK(ISASerialState, (obj), TYPE_ISA_SERIAL)
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typedef struct ISASerialState {
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ISADevice parent_obj;
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uint32_t index;
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uint32_t iobase;
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uint32_t isairq;
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SerialState state;
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} ISASerialState;
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static const int isa_serial_io[MAX_SERIAL_PORTS] = {
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0x3f8, 0x2f8, 0x3e8, 0x2e8
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};
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static const int isa_serial_irq[MAX_SERIAL_PORTS] = {
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4, 3, 4, 3
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};
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static void serial_isa_realizefn(DeviceState *dev, Error **errp)
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{
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static int index;
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ISADevice *isadev = ISA_DEVICE(dev);
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ISASerialState *isa = ISA_SERIAL(dev);
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SerialState *s = &isa->state;
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if (isa->index == -1) {
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isa->index = index;
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}
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if (isa->index >= MAX_SERIAL_PORTS) {
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error_setg(errp, "Max. supported number of ISA serial ports is %d.",
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MAX_SERIAL_PORTS);
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return;
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}
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if (isa->iobase == -1) {
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isa->iobase = isa_serial_io[isa->index];
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}
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if (isa->isairq == -1) {
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isa->isairq = isa_serial_irq[isa->index];
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}
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index++;
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s->baudbase = 115200;
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isa_init_irq(isadev, &s->irq, isa->isairq);
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serial_realize_core(s, errp);
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qdev_set_legacy_instance_id(dev, isa->iobase, 3);
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memory_region_init_io(&s->io, OBJECT(isa), &serial_io_ops, s, "serial", 8);
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isa_register_ioport(isadev, &s->io, isa->iobase);
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}
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static const VMStateDescription vmstate_isa_serial = {
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.name = "serial",
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.version_id = 3,
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.minimum_version_id = 2,
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.fields = (VMStateField[]) {
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VMSTATE_STRUCT(state, ISASerialState, 0, vmstate_serial, SerialState),
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VMSTATE_END_OF_LIST()
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}
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};
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static Property serial_isa_properties[] = {
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DEFINE_PROP_UINT32("index", ISASerialState, index, -1),
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DEFINE_PROP_HEX32("iobase", ISASerialState, iobase, -1),
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DEFINE_PROP_UINT32("irq", ISASerialState, isairq, -1),
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DEFINE_PROP_CHR("chardev", ISASerialState, state.chr),
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DEFINE_PROP_UINT32("wakeup", ISASerialState, state.wakeup, 0),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void serial_isa_class_initfn(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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dc->realize = serial_isa_realizefn;
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dc->vmsd = &vmstate_isa_serial;
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dc->props = serial_isa_properties;
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}
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static const TypeInfo serial_isa_info = {
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.name = TYPE_ISA_SERIAL,
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.parent = TYPE_ISA_DEVICE,
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.instance_size = sizeof(ISASerialState),
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.class_init = serial_isa_class_initfn,
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};
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static void serial_register_types(void)
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{
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type_register_static(&serial_isa_info);
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}
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type_init(serial_register_types)
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bool serial_isa_init(ISABus *bus, int index, CharDriverState *chr)
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{
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DeviceState *dev;
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ISADevice *isadev;
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isadev = isa_try_create(bus, TYPE_ISA_SERIAL);
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if (!isadev) {
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return false;
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}
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dev = DEVICE(isadev);
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qdev_prop_set_uint32(dev, "index", index);
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qdev_prop_set_chr(dev, "chardev", chr);
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if (qdev_init(dev) < 0) {
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return false;
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}
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return true;
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}
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