2 * QEMU 16550A UART emulation
4 * Copyright (c) 2003-2004 Fabrice Bellard
5 * Copyright (c) 2008 Citrix Systems, Inc.
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:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
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
26 /* see docs/specs/pci-serial.txt */
28 #include "hw/char/serial.h"
29 #include "hw/pci/pci.h"
30 #include "qapi/qmp/qerror.h"
32 #define PCI_SERIAL_MAX_PORTS 4
34 typedef struct PCISerialState
{
39 typedef struct PCIMultiSerialState
{
43 char *name
[PCI_SERIAL_MAX_PORTS
];
44 SerialState state
[PCI_SERIAL_MAX_PORTS
];
45 uint32_t level
[PCI_SERIAL_MAX_PORTS
];
47 } PCIMultiSerialState
;
49 static int serial_pci_init(PCIDevice
*dev
)
51 PCISerialState
*pci
= DO_UPCAST(PCISerialState
, dev
, dev
);
52 SerialState
*s
= &pci
->state
;
56 serial_realize_core(s
, &err
);
58 qerror_report_err(err
);
63 pci
->dev
.config
[PCI_INTERRUPT_PIN
] = 0x01;
64 s
->irq
= pci
->dev
.irq
[0];
66 memory_region_init_io(&s
->io
, &serial_io_ops
, s
, "serial", 8);
67 pci_register_bar(&pci
->dev
, 0, PCI_BASE_ADDRESS_SPACE_IO
, &s
->io
);
71 static void multi_serial_irq_mux(void *opaque
, int n
, int level
)
73 PCIMultiSerialState
*pci
= opaque
;
76 pci
->level
[n
] = level
;
77 for (i
= 0; i
< pci
->ports
; i
++) {
82 qemu_set_irq(pci
->dev
.irq
[0], pending
);
85 static int multi_serial_pci_init(PCIDevice
*dev
)
87 PCIDeviceClass
*pc
= PCI_DEVICE_GET_CLASS(dev
);
88 PCIMultiSerialState
*pci
= DO_UPCAST(PCIMultiSerialState
, dev
, dev
);
93 switch (pc
->device_id
) {
101 assert(pci
->ports
> 0);
102 assert(pci
->ports
<= PCI_SERIAL_MAX_PORTS
);
104 pci
->dev
.config
[PCI_INTERRUPT_PIN
] = 0x01;
105 memory_region_init(&pci
->iobar
, "multiserial", 8 * pci
->ports
);
106 pci_register_bar(&pci
->dev
, 0, PCI_BASE_ADDRESS_SPACE_IO
, &pci
->iobar
);
107 pci
->irqs
= qemu_allocate_irqs(multi_serial_irq_mux
, pci
,
110 for (i
= 0; i
< pci
->ports
; i
++) {
112 s
->baudbase
= 115200;
113 serial_realize_core(s
, &err
);
115 qerror_report_err(err
);
119 s
->irq
= pci
->irqs
[i
];
120 pci
->name
[i
] = g_strdup_printf("uart #%d", i
+1);
121 memory_region_init_io(&s
->io
, &serial_io_ops
, s
, pci
->name
[i
], 8);
122 memory_region_add_subregion(&pci
->iobar
, 8 * i
, &s
->io
);
127 static void serial_pci_exit(PCIDevice
*dev
)
129 PCISerialState
*pci
= DO_UPCAST(PCISerialState
, dev
, dev
);
130 SerialState
*s
= &pci
->state
;
133 memory_region_destroy(&s
->io
);
136 static void multi_serial_pci_exit(PCIDevice
*dev
)
138 PCIMultiSerialState
*pci
= DO_UPCAST(PCIMultiSerialState
, dev
, dev
);
142 for (i
= 0; i
< pci
->ports
; i
++) {
145 memory_region_destroy(&s
->io
);
146 g_free(pci
->name
[i
]);
148 memory_region_destroy(&pci
->iobar
);
149 qemu_free_irqs(pci
->irqs
);
152 static const VMStateDescription vmstate_pci_serial
= {
153 .name
= "pci-serial",
155 .minimum_version_id
= 1,
156 .fields
= (VMStateField
[]) {
157 VMSTATE_PCI_DEVICE(dev
, PCISerialState
),
158 VMSTATE_STRUCT(state
, PCISerialState
, 0, vmstate_serial
, SerialState
),
159 VMSTATE_END_OF_LIST()
163 static const VMStateDescription vmstate_pci_multi_serial
= {
164 .name
= "pci-serial-multi",
166 .minimum_version_id
= 1,
167 .fields
= (VMStateField
[]) {
168 VMSTATE_PCI_DEVICE(dev
, PCIMultiSerialState
),
169 VMSTATE_STRUCT_ARRAY(state
, PCIMultiSerialState
, PCI_SERIAL_MAX_PORTS
,
170 0, vmstate_serial
, SerialState
),
171 VMSTATE_UINT32_ARRAY(level
, PCIMultiSerialState
, PCI_SERIAL_MAX_PORTS
),
172 VMSTATE_END_OF_LIST()
176 static Property serial_pci_properties
[] = {
177 DEFINE_PROP_CHR("chardev", PCISerialState
, state
.chr
),
178 DEFINE_PROP_END_OF_LIST(),
181 static Property multi_2x_serial_pci_properties
[] = {
182 DEFINE_PROP_CHR("chardev1", PCIMultiSerialState
, state
[0].chr
),
183 DEFINE_PROP_CHR("chardev2", PCIMultiSerialState
, state
[1].chr
),
184 DEFINE_PROP_END_OF_LIST(),
187 static Property multi_4x_serial_pci_properties
[] = {
188 DEFINE_PROP_CHR("chardev1", PCIMultiSerialState
, state
[0].chr
),
189 DEFINE_PROP_CHR("chardev2", PCIMultiSerialState
, state
[1].chr
),
190 DEFINE_PROP_CHR("chardev3", PCIMultiSerialState
, state
[2].chr
),
191 DEFINE_PROP_CHR("chardev4", PCIMultiSerialState
, state
[3].chr
),
192 DEFINE_PROP_END_OF_LIST(),
195 static void serial_pci_class_initfn(ObjectClass
*klass
, void *data
)
197 DeviceClass
*dc
= DEVICE_CLASS(klass
);
198 PCIDeviceClass
*pc
= PCI_DEVICE_CLASS(klass
);
199 pc
->init
= serial_pci_init
;
200 pc
->exit
= serial_pci_exit
;
201 pc
->vendor_id
= PCI_VENDOR_ID_REDHAT
;
202 pc
->device_id
= PCI_DEVICE_ID_REDHAT_SERIAL
;
204 pc
->class_id
= PCI_CLASS_COMMUNICATION_SERIAL
;
205 dc
->vmsd
= &vmstate_pci_serial
;
206 dc
->props
= serial_pci_properties
;
209 static void multi_2x_serial_pci_class_initfn(ObjectClass
*klass
, void *data
)
211 DeviceClass
*dc
= DEVICE_CLASS(klass
);
212 PCIDeviceClass
*pc
= PCI_DEVICE_CLASS(klass
);
213 pc
->init
= multi_serial_pci_init
;
214 pc
->exit
= multi_serial_pci_exit
;
215 pc
->vendor_id
= PCI_VENDOR_ID_REDHAT
;
216 pc
->device_id
= PCI_DEVICE_ID_REDHAT_SERIAL2
;
218 pc
->class_id
= PCI_CLASS_COMMUNICATION_SERIAL
;
219 dc
->vmsd
= &vmstate_pci_multi_serial
;
220 dc
->props
= multi_2x_serial_pci_properties
;
223 static void multi_4x_serial_pci_class_initfn(ObjectClass
*klass
, void *data
)
225 DeviceClass
*dc
= DEVICE_CLASS(klass
);
226 PCIDeviceClass
*pc
= PCI_DEVICE_CLASS(klass
);
227 pc
->init
= multi_serial_pci_init
;
228 pc
->exit
= multi_serial_pci_exit
;
229 pc
->vendor_id
= PCI_VENDOR_ID_REDHAT
;
230 pc
->device_id
= PCI_DEVICE_ID_REDHAT_SERIAL4
;
232 pc
->class_id
= PCI_CLASS_COMMUNICATION_SERIAL
;
233 dc
->vmsd
= &vmstate_pci_multi_serial
;
234 dc
->props
= multi_4x_serial_pci_properties
;
237 static const TypeInfo serial_pci_info
= {
238 .name
= "pci-serial",
239 .parent
= TYPE_PCI_DEVICE
,
240 .instance_size
= sizeof(PCISerialState
),
241 .class_init
= serial_pci_class_initfn
,
244 static const TypeInfo multi_2x_serial_pci_info
= {
245 .name
= "pci-serial-2x",
246 .parent
= TYPE_PCI_DEVICE
,
247 .instance_size
= sizeof(PCIMultiSerialState
),
248 .class_init
= multi_2x_serial_pci_class_initfn
,
251 static const TypeInfo multi_4x_serial_pci_info
= {
252 .name
= "pci-serial-4x",
253 .parent
= TYPE_PCI_DEVICE
,
254 .instance_size
= sizeof(PCIMultiSerialState
),
255 .class_init
= multi_4x_serial_pci_class_initfn
,
258 static void serial_pci_register_types(void)
260 type_register_static(&serial_pci_info
);
261 type_register_static(&multi_2x_serial_pci_info
);
262 type_register_static(&multi_4x_serial_pci_info
);
265 type_init(serial_pci_register_types
)