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 | |
44 | static 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 | |
65 | static 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 | |
74 | static 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 | |
85 | static 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 | |
91 | static 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 | |
106 | static 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 | |
117 | static void serial_pci_register_types(void) |
118 | { |
119 | type_register_static(&serial_pci_info); |
120 | } |
121 | |
122 | type_init(serial_pci_register_types) |
123 | |