sd: Use ERRP_GUARD()
[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
37 typedef struct PCISerialState {
38 PCIDevice dev;
39 SerialState state;
40 uint8_t prog_if;
41 } PCISerialState;
42
43 #define TYPE_PCI_SERIAL "pci-serial"
44 #define PCI_SERIAL(s) OBJECT_CHECK(PCISerialState, (s), TYPE_PCI_SERIAL)
45
46 static void serial_pci_realize(PCIDevice *dev, Error **errp)
47 {
48 PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev);
49 SerialState *s = &pci->state;
50
51 if (!qdev_realize(DEVICE(s), NULL, errp)) {
52 return;
53 }
54
55 pci->dev.config[PCI_CLASS_PROG] = pci->prog_if;
56 pci->dev.config[PCI_INTERRUPT_PIN] = 0x01;
57 s->irq = pci_allocate_irq(&pci->dev);
58
59 memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s, "serial", 8);
60 pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io);
61 }
62
63 static void serial_pci_exit(PCIDevice *dev)
64 {
65 PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev);
66 SerialState *s = &pci->state;
67
68 qdev_unrealize(DEVICE(s));
69 qemu_free_irq(s->irq);
70 }
71
72 static const VMStateDescription vmstate_pci_serial = {
73 .name = "pci-serial",
74 .version_id = 1,
75 .minimum_version_id = 1,
76 .fields = (VMStateField[]) {
77 VMSTATE_PCI_DEVICE(dev, PCISerialState),
78 VMSTATE_STRUCT(state, PCISerialState, 0, vmstate_serial, SerialState),
79 VMSTATE_END_OF_LIST()
80 }
81 };
82
83 static Property serial_pci_properties[] = {
84 DEFINE_PROP_CHR("chardev", PCISerialState, state.chr),
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
111 static const TypeInfo serial_pci_info = {
112 .name = TYPE_PCI_SERIAL,
113 .parent = TYPE_PCI_DEVICE,
114 .instance_size = sizeof(PCISerialState),
115 .instance_init = serial_pci_init,
116 .class_init = serial_pci_class_initfn,
117 .interfaces = (InterfaceInfo[]) {
118 { INTERFACE_CONVENTIONAL_PCI_DEVICE },
119 { },
120 },
121 };
122
123 static void serial_pci_register_types(void)
124 {
125 type_register_static(&serial_pci_info);
126 }
127
128 type_init(serial_pci_register_types)