hw/char/serial-{isa, pci}: Alias QDEV properties from generic serial object
[qemu.git] / hw / char / serial-pci.c
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 #include "qom/object.h"
37
38 struct PCISerialState {
39 PCIDevice dev;
40 SerialState state;
41 uint8_t prog_if;
42 };
43
44 #define TYPE_PCI_SERIAL "pci-serial"
45 OBJECT_DECLARE_SIMPLE_TYPE(PCISerialState, PCI_SERIAL)
46
47 static void serial_pci_realize(PCIDevice *dev, Error **errp)
48 {
49 PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev);
50 SerialState *s = &pci->state;
51
52 if (!qdev_realize(DEVICE(s), NULL, errp)) {
53 return;
54 }
55
56 pci->dev.config[PCI_CLASS_PROG] = pci->prog_if;
57 pci->dev.config[PCI_INTERRUPT_PIN] = 0x01;
58 s->irq = pci_allocate_irq(&pci->dev);
59
60 memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s, "serial", 8);
61 pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io);
62 }
63
64 static void serial_pci_exit(PCIDevice *dev)
65 {
66 PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev);
67 SerialState *s = &pci->state;
68
69 qdev_unrealize(DEVICE(s));
70 qemu_free_irq(s->irq);
71 }
72
73 static const VMStateDescription vmstate_pci_serial = {
74 .name = "pci-serial",
75 .version_id = 1,
76 .minimum_version_id = 1,
77 .fields = (VMStateField[]) {
78 VMSTATE_PCI_DEVICE(dev, PCISerialState),
79 VMSTATE_STRUCT(state, PCISerialState, 0, vmstate_serial, SerialState),
80 VMSTATE_END_OF_LIST()
81 }
82 };
83
84 static Property serial_pci_properties[] = {
85 DEFINE_PROP_UINT8("prog_if", PCISerialState, prog_if, 0x02),
86 DEFINE_PROP_END_OF_LIST(),
87 };
88
89 static void serial_pci_class_initfn(ObjectClass *klass, void *data)
90 {
91 DeviceClass *dc = DEVICE_CLASS(klass);
92 PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass);
93 pc->realize = serial_pci_realize;
94 pc->exit = serial_pci_exit;
95 pc->vendor_id = PCI_VENDOR_ID_REDHAT;
96 pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL;
97 pc->revision = 1;
98 pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL;
99 dc->vmsd = &vmstate_pci_serial;
100 device_class_set_props(dc, serial_pci_properties);
101 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
102 }
103
104 static void serial_pci_init(Object *o)
105 {
106 PCISerialState *ps = PCI_SERIAL(o);
107
108 object_initialize_child(o, "serial", &ps->state, TYPE_SERIAL);
109
110 qdev_alias_all_properties(DEVICE(&ps->state), o);
111 }
112
113 static const TypeInfo serial_pci_info = {
114 .name = TYPE_PCI_SERIAL,
115 .parent = TYPE_PCI_DEVICE,
116 .instance_size = sizeof(PCISerialState),
117 .instance_init = serial_pci_init,
118 .class_init = serial_pci_class_initfn,
119 .interfaces = (InterfaceInfo[]) {
120 { INTERFACE_CONVENTIONAL_PCI_DEVICE },
121 { },
122 },
123 };
124
125 static void serial_pci_register_types(void)
126 {
127 type_register_static(&serial_pci_info);
128 }
129
130 type_init(serial_pci_register_types)