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[qemu.git] / hw / char / serial-pci.c
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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
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26/* see docs/specs/pci-serial.txt */
27
0d09e41a 28#include "hw/char/serial.h"
83c9f4ca 29#include "hw/pci/pci.h"
db895a1e 30#include "qapi/qmp/qerror.h"
419ad672 31
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32#define PCI_SERIAL_MAX_PORTS 4
33
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34typedef struct PCISerialState {
35 PCIDevice dev;
36 SerialState state;
13cc2c3e 37 uint8_t prog_if;
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38} PCISerialState;
39
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40typedef struct PCIMultiSerialState {
41 PCIDevice dev;
42 MemoryRegion iobar;
43 uint32_t ports;
44 char *name[PCI_SERIAL_MAX_PORTS];
45 SerialState state[PCI_SERIAL_MAX_PORTS];
46 uint32_t level[PCI_SERIAL_MAX_PORTS];
47 qemu_irq *irqs;
13cc2c3e 48 uint8_t prog_if;
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49} PCIMultiSerialState;
50
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51static int serial_pci_init(PCIDevice *dev)
52{
53 PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev);
54 SerialState *s = &pci->state;
db895a1e 55 Error *err = NULL;
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56
57 s->baudbase = 115200;
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58 serial_realize_core(s, &err);
59 if (err != NULL) {
60 qerror_report_err(err);
61 error_free(err);
62 return -1;
63 }
419ad672 64
13cc2c3e 65 pci->dev.config[PCI_CLASS_PROG] = pci->prog_if;
419ad672 66 pci->dev.config[PCI_INTERRUPT_PIN] = 0x01;
9e64f8a3 67 s->irq = pci_allocate_irq(&pci->dev);
419ad672 68
300b1fc6 69 memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s, "serial", 8);
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70 pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io);
71 return 0;
72}
73
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74static void multi_serial_irq_mux(void *opaque, int n, int level)
75{
76 PCIMultiSerialState *pci = opaque;
77 int i, pending = 0;
78
79 pci->level[n] = level;
80 for (i = 0; i < pci->ports; i++) {
81 if (pci->level[i]) {
82 pending = 1;
83 }
84 }
9e64f8a3 85 pci_set_irq(&pci->dev, pending);
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86}
87
88static int multi_serial_pci_init(PCIDevice *dev)
89{
90 PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev);
91 PCIMultiSerialState *pci = DO_UPCAST(PCIMultiSerialState, dev, dev);
92 SerialState *s;
db895a1e 93 Error *err = NULL;
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94 int i;
95
96 switch (pc->device_id) {
97 case 0x0003:
98 pci->ports = 2;
99 break;
100 case 0x0004:
101 pci->ports = 4;
102 break;
103 }
104 assert(pci->ports > 0);
105 assert(pci->ports <= PCI_SERIAL_MAX_PORTS);
106
13cc2c3e 107 pci->dev.config[PCI_CLASS_PROG] = pci->prog_if;
d66bbea4 108 pci->dev.config[PCI_INTERRUPT_PIN] = 0x01;
300b1fc6 109 memory_region_init(&pci->iobar, OBJECT(pci), "multiserial", 8 * pci->ports);
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110 pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &pci->iobar);
111 pci->irqs = qemu_allocate_irqs(multi_serial_irq_mux, pci,
112 pci->ports);
113
114 for (i = 0; i < pci->ports; i++) {
115 s = pci->state + i;
116 s->baudbase = 115200;
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117 serial_realize_core(s, &err);
118 if (err != NULL) {
119 qerror_report_err(err);
120 error_free(err);
121 return -1;
122 }
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123 s->irq = pci->irqs[i];
124 pci->name[i] = g_strdup_printf("uart #%d", i+1);
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125 memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s,
126 pci->name[i], 8);
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127 memory_region_add_subregion(&pci->iobar, 8 * i, &s->io);
128 }
129 return 0;
130}
131
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132static void serial_pci_exit(PCIDevice *dev)
133{
134 PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev);
135 SerialState *s = &pci->state;
136
137 serial_exit_core(s);
138 memory_region_destroy(&s->io);
9e64f8a3 139 qemu_free_irq(s->irq);
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140}
141
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142static void multi_serial_pci_exit(PCIDevice *dev)
143{
144 PCIMultiSerialState *pci = DO_UPCAST(PCIMultiSerialState, dev, dev);
145 SerialState *s;
146 int i;
147
148 for (i = 0; i < pci->ports; i++) {
149 s = pci->state + i;
150 serial_exit_core(s);
7497bce6 151 memory_region_del_subregion(&pci->iobar, &s->io);
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152 memory_region_destroy(&s->io);
153 g_free(pci->name[i]);
154 }
155 memory_region_destroy(&pci->iobar);
f173d57a 156 qemu_free_irqs(pci->irqs, pci->ports);
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157}
158
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159static const VMStateDescription vmstate_pci_serial = {
160 .name = "pci-serial",
161 .version_id = 1,
162 .minimum_version_id = 1,
d49805ae 163 .fields = (VMStateField[]) {
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164 VMSTATE_PCI_DEVICE(dev, PCISerialState),
165 VMSTATE_STRUCT(state, PCISerialState, 0, vmstate_serial, SerialState),
166 VMSTATE_END_OF_LIST()
167 }
168};
169
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170static const VMStateDescription vmstate_pci_multi_serial = {
171 .name = "pci-serial-multi",
172 .version_id = 1,
173 .minimum_version_id = 1,
d49805ae 174 .fields = (VMStateField[]) {
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175 VMSTATE_PCI_DEVICE(dev, PCIMultiSerialState),
176 VMSTATE_STRUCT_ARRAY(state, PCIMultiSerialState, PCI_SERIAL_MAX_PORTS,
177 0, vmstate_serial, SerialState),
178 VMSTATE_UINT32_ARRAY(level, PCIMultiSerialState, PCI_SERIAL_MAX_PORTS),
179 VMSTATE_END_OF_LIST()
180 }
181};
182
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183static Property serial_pci_properties[] = {
184 DEFINE_PROP_CHR("chardev", PCISerialState, state.chr),
13cc2c3e 185 DEFINE_PROP_UINT8("prog_if", PCISerialState, prog_if, 0x02),
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186 DEFINE_PROP_END_OF_LIST(),
187};
188
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189static Property multi_2x_serial_pci_properties[] = {
190 DEFINE_PROP_CHR("chardev1", PCIMultiSerialState, state[0].chr),
191 DEFINE_PROP_CHR("chardev2", PCIMultiSerialState, state[1].chr),
13cc2c3e 192 DEFINE_PROP_UINT8("prog_if", PCIMultiSerialState, prog_if, 0x02),
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193 DEFINE_PROP_END_OF_LIST(),
194};
195
196static Property multi_4x_serial_pci_properties[] = {
197 DEFINE_PROP_CHR("chardev1", PCIMultiSerialState, state[0].chr),
198 DEFINE_PROP_CHR("chardev2", PCIMultiSerialState, state[1].chr),
199 DEFINE_PROP_CHR("chardev3", PCIMultiSerialState, state[2].chr),
200 DEFINE_PROP_CHR("chardev4", PCIMultiSerialState, state[3].chr),
13cc2c3e 201 DEFINE_PROP_UINT8("prog_if", PCIMultiSerialState, prog_if, 0x02),
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202 DEFINE_PROP_END_OF_LIST(),
203};
204
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205static void serial_pci_class_initfn(ObjectClass *klass, void *data)
206{
207 DeviceClass *dc = DEVICE_CLASS(klass);
208 PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass);
209 pc->init = serial_pci_init;
210 pc->exit = serial_pci_exit;
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211 pc->vendor_id = PCI_VENDOR_ID_REDHAT;
212 pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL;
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213 pc->revision = 1;
214 pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL;
215 dc->vmsd = &vmstate_pci_serial;
216 dc->props = serial_pci_properties;
125ee0ed 217 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
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218}
219
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220static void multi_2x_serial_pci_class_initfn(ObjectClass *klass, void *data)
221{
222 DeviceClass *dc = DEVICE_CLASS(klass);
223 PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass);
224 pc->init = multi_serial_pci_init;
225 pc->exit = multi_serial_pci_exit;
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226 pc->vendor_id = PCI_VENDOR_ID_REDHAT;
227 pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL2;
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228 pc->revision = 1;
229 pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL;
230 dc->vmsd = &vmstate_pci_multi_serial;
231 dc->props = multi_2x_serial_pci_properties;
125ee0ed 232 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
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233}
234
235static void multi_4x_serial_pci_class_initfn(ObjectClass *klass, void *data)
236{
237 DeviceClass *dc = DEVICE_CLASS(klass);
238 PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass);
239 pc->init = multi_serial_pci_init;
240 pc->exit = multi_serial_pci_exit;
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241 pc->vendor_id = PCI_VENDOR_ID_REDHAT;
242 pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL4;
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243 pc->revision = 1;
244 pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL;
245 dc->vmsd = &vmstate_pci_multi_serial;
246 dc->props = multi_4x_serial_pci_properties;
125ee0ed 247 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
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248}
249
8c43a6f0 250static const TypeInfo serial_pci_info = {
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251 .name = "pci-serial",
252 .parent = TYPE_PCI_DEVICE,
253 .instance_size = sizeof(PCISerialState),
254 .class_init = serial_pci_class_initfn,
255};
256
8c43a6f0 257static const TypeInfo multi_2x_serial_pci_info = {
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258 .name = "pci-serial-2x",
259 .parent = TYPE_PCI_DEVICE,
260 .instance_size = sizeof(PCIMultiSerialState),
261 .class_init = multi_2x_serial_pci_class_initfn,
262};
263
8c43a6f0 264static const TypeInfo multi_4x_serial_pci_info = {
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265 .name = "pci-serial-4x",
266 .parent = TYPE_PCI_DEVICE,
267 .instance_size = sizeof(PCIMultiSerialState),
268 .class_init = multi_4x_serial_pci_class_initfn,
269};
270
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271static void serial_pci_register_types(void)
272{
273 type_register_static(&serial_pci_info);
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274 type_register_static(&multi_2x_serial_pci_info);
275 type_register_static(&multi_4x_serial_pci_info);
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276}
277
278type_init(serial_pci_register_types)
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