129 lines
4 KiB
C
129 lines
4 KiB
C
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/*
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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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/* see docs/specs/pci-serial.txt */
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "qemu/module.h"
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#include "hw/char/serial.h"
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#include "hw/irq.h"
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#include "hw/pci/pci.h"
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#include "hw/qdev-properties.h"
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#include "migration/vmstate.h"
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typedef struct PCISerialState {
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PCIDevice dev;
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SerialState state;
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uint8_t prog_if;
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} PCISerialState;
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#define TYPE_PCI_SERIAL "pci-serial"
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#define PCI_SERIAL(s) OBJECT_CHECK(PCISerialState, (s), TYPE_PCI_SERIAL)
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static void serial_pci_realize(PCIDevice *dev, Error **errp)
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{
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PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev);
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SerialState *s = &pci->state;
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if (!qdev_realize(DEVICE(s), NULL, errp)) {
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return;
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}
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pci->dev.config[PCI_CLASS_PROG] = pci->prog_if;
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pci->dev.config[PCI_INTERRUPT_PIN] = 0x01;
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s->irq = pci_allocate_irq(&pci->dev);
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memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s, "serial", 8);
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pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io);
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}
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static void serial_pci_exit(PCIDevice *dev)
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{
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PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev);
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SerialState *s = &pci->state;
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qdev_unrealize(DEVICE(s));
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qemu_free_irq(s->irq);
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}
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static const VMStateDescription vmstate_pci_serial = {
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.name = "pci-serial",
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.version_id = 1,
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.minimum_version_id = 1,
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.fields = (VMStateField[]) {
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VMSTATE_PCI_DEVICE(dev, PCISerialState),
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VMSTATE_STRUCT(state, PCISerialState, 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_pci_properties[] = {
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DEFINE_PROP_CHR("chardev", PCISerialState, state.chr),
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DEFINE_PROP_UINT8("prog_if", PCISerialState, prog_if, 0x02),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void serial_pci_class_initfn(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass);
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pc->realize = serial_pci_realize;
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pc->exit = serial_pci_exit;
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pc->vendor_id = PCI_VENDOR_ID_REDHAT;
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pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL;
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pc->revision = 1;
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pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL;
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dc->vmsd = &vmstate_pci_serial;
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device_class_set_props(dc, serial_pci_properties);
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set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
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}
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static void serial_pci_init(Object *o)
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{
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PCISerialState *ps = PCI_SERIAL(o);
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object_initialize_child(o, "serial", &ps->state, TYPE_SERIAL);
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}
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static const TypeInfo serial_pci_info = {
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.name = TYPE_PCI_SERIAL,
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.parent = TYPE_PCI_DEVICE,
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.instance_size = sizeof(PCISerialState),
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.instance_init = serial_pci_init,
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.class_init = serial_pci_class_initfn,
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.interfaces = (InterfaceInfo[]) {
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{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
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{ },
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},
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};
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static void serial_pci_register_types(void)
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{
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type_register_static(&serial_pci_info);
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}
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type_init(serial_pci_register_types)
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