1/*
2 * QEMU 16550A UART emulation
3 *
4 * Copyright (c) 2003-2004 Fabrice Bellard
5 * Copyright (c) 2008 Citrix Systems, Inc.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 */
25
26/* see docs/specs/pci-serial.txt */
27
28#include "qemu/osdep.h"
29#include "qapi/error.h"
30#include "qemu/module.h"
31#include "hw/char/serial.h"
32#include "hw/irq.h"
33#include "hw/pci/pci.h"
34#include "hw/qdev-properties.h"
35#include "migration/vmstate.h"
36
37typedef struct PCISerialState {
38 PCIDevice dev;
39 SerialState state;
40 uint8_t prog_if;
41} PCISerialState;
42
43
44static void serial_pci_realize(PCIDevice *dev, Error **errp)
45{
46 PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev);
47 SerialState *s = &pci->state;
48 Error *err = NULL;
49
50 s->baudbase = 115200;
51 serial_realize_core(s, &err);
52 if (err != NULL) {
53 error_propagate(errp, err);
54 return;
55 }
56
57 pci->dev.config[PCI_CLASS_PROG] = pci->prog_if;
58 pci->dev.config[PCI_INTERRUPT_PIN] = 0x01;
59 s->irq = pci_allocate_irq(&pci->dev);
60
61 memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s, "serial", 8);
62 pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io);
63}
64
65static void serial_pci_exit(PCIDevice *dev)
66{
67 PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev);
68 SerialState *s = &pci->state;
69
70 serial_exit_core(s);
71 qemu_free_irq(s->irq);
72}
73
74static const VMStateDescription vmstate_pci_serial = {
75 .name = "pci-serial",
76 .version_id = 1,
77 .minimum_version_id = 1,
78 .fields = (VMStateField[]) {
79 VMSTATE_PCI_DEVICE(dev, PCISerialState),
80 VMSTATE_STRUCT(state, PCISerialState, 0, vmstate_serial, SerialState),
81 VMSTATE_END_OF_LIST()
82 }
83};
84
85static Property serial_pci_properties[] = {
86 DEFINE_PROP_CHR("chardev", PCISerialState, state.chr),
87 DEFINE_PROP_UINT8("prog_if", PCISerialState, prog_if, 0x02),
88 DEFINE_PROP_END_OF_LIST(),
89};
90
91static void serial_pci_class_initfn(ObjectClass *klass, void *data)
92{
93 DeviceClass *dc = DEVICE_CLASS(klass);
94 PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass);
95 pc->realize = serial_pci_realize;
96 pc->exit = serial_pci_exit;
97 pc->vendor_id = PCI_VENDOR_ID_REDHAT;
98 pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL;
99 pc->revision = 1;
100 pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL;
101 dc->vmsd = &vmstate_pci_serial;
102 dc->props = serial_pci_properties;
103 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
104}
105
106static const TypeInfo serial_pci_info = {
107 .name = "pci-serial",
108 .parent = TYPE_PCI_DEVICE,
109 .instance_size = sizeof(PCISerialState),
110 .class_init = serial_pci_class_initfn,
111 .interfaces = (InterfaceInfo[]) {
112 { INTERFACE_CONVENTIONAL_PCI_DEVICE },
113 { },
114 },
115};
116
117static void serial_pci_register_types(void)
118{
119 type_register_static(&serial_pci_info);
120}
121
122type_init(serial_pci_register_types)
123