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Commit | Line | Data |
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419ad672 GH |
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 | ||
90734e02 GH |
26 | /* see docs/specs/pci-serial.txt */ |
27 | ||
b6a0aa05 | 28 | #include "qemu/osdep.h" |
da34e65c | 29 | #include "qapi/error.h" |
0d09e41a | 30 | #include "hw/char/serial.h" |
83c9f4ca | 31 | #include "hw/pci/pci.h" |
419ad672 | 32 | |
d66bbea4 GH |
33 | #define PCI_SERIAL_MAX_PORTS 4 |
34 | ||
419ad672 GH |
35 | typedef struct PCISerialState { |
36 | PCIDevice dev; | |
37 | SerialState state; | |
13cc2c3e | 38 | uint8_t prog_if; |
419ad672 GH |
39 | } PCISerialState; |
40 | ||
d66bbea4 GH |
41 | typedef struct PCIMultiSerialState { |
42 | PCIDevice dev; | |
43 | MemoryRegion iobar; | |
44 | uint32_t ports; | |
45 | char *name[PCI_SERIAL_MAX_PORTS]; | |
46 | SerialState state[PCI_SERIAL_MAX_PORTS]; | |
47 | uint32_t level[PCI_SERIAL_MAX_PORTS]; | |
48 | qemu_irq *irqs; | |
13cc2c3e | 49 | uint8_t prog_if; |
d66bbea4 GH |
50 | } PCIMultiSerialState; |
51 | ||
a48da7b5 GH |
52 | static void multi_serial_pci_exit(PCIDevice *dev); |
53 | ||
28d85904 | 54 | static void serial_pci_realize(PCIDevice *dev, Error **errp) |
419ad672 GH |
55 | { |
56 | PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev); | |
57 | SerialState *s = &pci->state; | |
db895a1e | 58 | Error *err = NULL; |
419ad672 GH |
59 | |
60 | s->baudbase = 115200; | |
db895a1e AF |
61 | serial_realize_core(s, &err); |
62 | if (err != NULL) { | |
28d85904 MA |
63 | error_propagate(errp, err); |
64 | return; | |
db895a1e | 65 | } |
419ad672 | 66 | |
13cc2c3e | 67 | pci->dev.config[PCI_CLASS_PROG] = pci->prog_if; |
419ad672 | 68 | pci->dev.config[PCI_INTERRUPT_PIN] = 0x01; |
9e64f8a3 | 69 | s->irq = pci_allocate_irq(&pci->dev); |
419ad672 | 70 | |
300b1fc6 | 71 | memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s, "serial", 8); |
419ad672 | 72 | pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io); |
419ad672 GH |
73 | } |
74 | ||
d66bbea4 GH |
75 | static void multi_serial_irq_mux(void *opaque, int n, int level) |
76 | { | |
77 | PCIMultiSerialState *pci = opaque; | |
78 | int i, pending = 0; | |
79 | ||
80 | pci->level[n] = level; | |
81 | for (i = 0; i < pci->ports; i++) { | |
82 | if (pci->level[i]) { | |
83 | pending = 1; | |
84 | } | |
85 | } | |
9e64f8a3 | 86 | pci_set_irq(&pci->dev, pending); |
d66bbea4 GH |
87 | } |
88 | ||
28d85904 | 89 | static void multi_serial_pci_realize(PCIDevice *dev, Error **errp) |
d66bbea4 GH |
90 | { |
91 | PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev); | |
92 | PCIMultiSerialState *pci = DO_UPCAST(PCIMultiSerialState, dev, dev); | |
93 | SerialState *s; | |
db895a1e | 94 | Error *err = NULL; |
a48da7b5 | 95 | int i, nr_ports = 0; |
d66bbea4 GH |
96 | |
97 | switch (pc->device_id) { | |
98 | case 0x0003: | |
a48da7b5 | 99 | nr_ports = 2; |
d66bbea4 GH |
100 | break; |
101 | case 0x0004: | |
a48da7b5 | 102 | nr_ports = 4; |
d66bbea4 GH |
103 | break; |
104 | } | |
a48da7b5 GH |
105 | assert(nr_ports > 0); |
106 | assert(nr_ports <= PCI_SERIAL_MAX_PORTS); | |
d66bbea4 | 107 | |
13cc2c3e | 108 | pci->dev.config[PCI_CLASS_PROG] = pci->prog_if; |
d66bbea4 | 109 | pci->dev.config[PCI_INTERRUPT_PIN] = 0x01; |
a48da7b5 | 110 | memory_region_init(&pci->iobar, OBJECT(pci), "multiserial", 8 * nr_ports); |
d66bbea4 GH |
111 | pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &pci->iobar); |
112 | pci->irqs = qemu_allocate_irqs(multi_serial_irq_mux, pci, | |
a48da7b5 | 113 | nr_ports); |
d66bbea4 | 114 | |
a48da7b5 | 115 | for (i = 0; i < nr_ports; i++) { |
d66bbea4 GH |
116 | s = pci->state + i; |
117 | s->baudbase = 115200; | |
db895a1e AF |
118 | serial_realize_core(s, &err); |
119 | if (err != NULL) { | |
28d85904 | 120 | error_propagate(errp, err); |
a48da7b5 | 121 | multi_serial_pci_exit(dev); |
28d85904 | 122 | return; |
db895a1e | 123 | } |
d66bbea4 GH |
124 | s->irq = pci->irqs[i]; |
125 | pci->name[i] = g_strdup_printf("uart #%d", i+1); | |
300b1fc6 PB |
126 | memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s, |
127 | pci->name[i], 8); | |
d66bbea4 | 128 | memory_region_add_subregion(&pci->iobar, 8 * i, &s->io); |
a48da7b5 | 129 | pci->ports++; |
d66bbea4 | 130 | } |
d66bbea4 GH |
131 | } |
132 | ||
419ad672 GH |
133 | static void serial_pci_exit(PCIDevice *dev) |
134 | { | |
135 | PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev); | |
136 | SerialState *s = &pci->state; | |
137 | ||
138 | serial_exit_core(s); | |
9e64f8a3 | 139 | qemu_free_irq(s->irq); |
419ad672 GH |
140 | } |
141 | ||
d66bbea4 GH |
142 | static 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); |
d66bbea4 GH |
152 | g_free(pci->name[i]); |
153 | } | |
f173d57a | 154 | qemu_free_irqs(pci->irqs, pci->ports); |
d66bbea4 GH |
155 | } |
156 | ||
419ad672 GH |
157 | static const VMStateDescription vmstate_pci_serial = { |
158 | .name = "pci-serial", | |
159 | .version_id = 1, | |
160 | .minimum_version_id = 1, | |
d49805ae | 161 | .fields = (VMStateField[]) { |
419ad672 GH |
162 | VMSTATE_PCI_DEVICE(dev, PCISerialState), |
163 | VMSTATE_STRUCT(state, PCISerialState, 0, vmstate_serial, SerialState), | |
164 | VMSTATE_END_OF_LIST() | |
165 | } | |
166 | }; | |
167 | ||
d66bbea4 GH |
168 | static const VMStateDescription vmstate_pci_multi_serial = { |
169 | .name = "pci-serial-multi", | |
170 | .version_id = 1, | |
171 | .minimum_version_id = 1, | |
d49805ae | 172 | .fields = (VMStateField[]) { |
d66bbea4 GH |
173 | VMSTATE_PCI_DEVICE(dev, PCIMultiSerialState), |
174 | VMSTATE_STRUCT_ARRAY(state, PCIMultiSerialState, PCI_SERIAL_MAX_PORTS, | |
175 | 0, vmstate_serial, SerialState), | |
176 | VMSTATE_UINT32_ARRAY(level, PCIMultiSerialState, PCI_SERIAL_MAX_PORTS), | |
177 | VMSTATE_END_OF_LIST() | |
178 | } | |
179 | }; | |
180 | ||
419ad672 GH |
181 | static Property serial_pci_properties[] = { |
182 | DEFINE_PROP_CHR("chardev", PCISerialState, state.chr), | |
13cc2c3e | 183 | DEFINE_PROP_UINT8("prog_if", PCISerialState, prog_if, 0x02), |
419ad672 GH |
184 | DEFINE_PROP_END_OF_LIST(), |
185 | }; | |
186 | ||
d66bbea4 GH |
187 | static Property multi_2x_serial_pci_properties[] = { |
188 | DEFINE_PROP_CHR("chardev1", PCIMultiSerialState, state[0].chr), | |
189 | DEFINE_PROP_CHR("chardev2", PCIMultiSerialState, state[1].chr), | |
13cc2c3e | 190 | DEFINE_PROP_UINT8("prog_if", PCIMultiSerialState, prog_if, 0x02), |
d66bbea4 GH |
191 | DEFINE_PROP_END_OF_LIST(), |
192 | }; | |
193 | ||
194 | static Property multi_4x_serial_pci_properties[] = { | |
195 | DEFINE_PROP_CHR("chardev1", PCIMultiSerialState, state[0].chr), | |
196 | DEFINE_PROP_CHR("chardev2", PCIMultiSerialState, state[1].chr), | |
197 | DEFINE_PROP_CHR("chardev3", PCIMultiSerialState, state[2].chr), | |
198 | DEFINE_PROP_CHR("chardev4", PCIMultiSerialState, state[3].chr), | |
13cc2c3e | 199 | DEFINE_PROP_UINT8("prog_if", PCIMultiSerialState, prog_if, 0x02), |
d66bbea4 GH |
200 | DEFINE_PROP_END_OF_LIST(), |
201 | }; | |
202 | ||
419ad672 GH |
203 | static void serial_pci_class_initfn(ObjectClass *klass, void *data) |
204 | { | |
205 | DeviceClass *dc = DEVICE_CLASS(klass); | |
206 | PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass); | |
28d85904 | 207 | pc->realize = serial_pci_realize; |
419ad672 | 208 | pc->exit = serial_pci_exit; |
5c03a254 PB |
209 | pc->vendor_id = PCI_VENDOR_ID_REDHAT; |
210 | pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL; | |
419ad672 GH |
211 | pc->revision = 1; |
212 | pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL; | |
213 | dc->vmsd = &vmstate_pci_serial; | |
214 | dc->props = serial_pci_properties; | |
125ee0ed | 215 | set_bit(DEVICE_CATEGORY_INPUT, dc->categories); |
419ad672 GH |
216 | } |
217 | ||
d66bbea4 GH |
218 | static void multi_2x_serial_pci_class_initfn(ObjectClass *klass, void *data) |
219 | { | |
220 | DeviceClass *dc = DEVICE_CLASS(klass); | |
221 | PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass); | |
28d85904 | 222 | pc->realize = multi_serial_pci_realize; |
d66bbea4 | 223 | pc->exit = multi_serial_pci_exit; |
5c03a254 PB |
224 | pc->vendor_id = PCI_VENDOR_ID_REDHAT; |
225 | pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL2; | |
d66bbea4 GH |
226 | pc->revision = 1; |
227 | pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL; | |
228 | dc->vmsd = &vmstate_pci_multi_serial; | |
229 | dc->props = multi_2x_serial_pci_properties; | |
125ee0ed | 230 | set_bit(DEVICE_CATEGORY_INPUT, dc->categories); |
d66bbea4 GH |
231 | } |
232 | ||
233 | static void multi_4x_serial_pci_class_initfn(ObjectClass *klass, void *data) | |
234 | { | |
235 | DeviceClass *dc = DEVICE_CLASS(klass); | |
236 | PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass); | |
28d85904 | 237 | pc->realize = multi_serial_pci_realize; |
d66bbea4 | 238 | pc->exit = multi_serial_pci_exit; |
5c03a254 PB |
239 | pc->vendor_id = PCI_VENDOR_ID_REDHAT; |
240 | pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL4; | |
d66bbea4 GH |
241 | pc->revision = 1; |
242 | pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL; | |
243 | dc->vmsd = &vmstate_pci_multi_serial; | |
244 | dc->props = multi_4x_serial_pci_properties; | |
125ee0ed | 245 | set_bit(DEVICE_CATEGORY_INPUT, dc->categories); |
d66bbea4 GH |
246 | } |
247 | ||
8c43a6f0 | 248 | static const TypeInfo serial_pci_info = { |
419ad672 GH |
249 | .name = "pci-serial", |
250 | .parent = TYPE_PCI_DEVICE, | |
251 | .instance_size = sizeof(PCISerialState), | |
252 | .class_init = serial_pci_class_initfn, | |
fd3b02c8 EH |
253 | .interfaces = (InterfaceInfo[]) { |
254 | { INTERFACE_CONVENTIONAL_PCI_DEVICE }, | |
255 | { }, | |
256 | }, | |
419ad672 GH |
257 | }; |
258 | ||
8c43a6f0 | 259 | static const TypeInfo multi_2x_serial_pci_info = { |
d66bbea4 GH |
260 | .name = "pci-serial-2x", |
261 | .parent = TYPE_PCI_DEVICE, | |
262 | .instance_size = sizeof(PCIMultiSerialState), | |
263 | .class_init = multi_2x_serial_pci_class_initfn, | |
fd3b02c8 EH |
264 | .interfaces = (InterfaceInfo[]) { |
265 | { INTERFACE_CONVENTIONAL_PCI_DEVICE }, | |
266 | { }, | |
267 | }, | |
d66bbea4 GH |
268 | }; |
269 | ||
8c43a6f0 | 270 | static const TypeInfo multi_4x_serial_pci_info = { |
d66bbea4 GH |
271 | .name = "pci-serial-4x", |
272 | .parent = TYPE_PCI_DEVICE, | |
273 | .instance_size = sizeof(PCIMultiSerialState), | |
274 | .class_init = multi_4x_serial_pci_class_initfn, | |
fd3b02c8 EH |
275 | .interfaces = (InterfaceInfo[]) { |
276 | { INTERFACE_CONVENTIONAL_PCI_DEVICE }, | |
277 | { }, | |
278 | }, | |
d66bbea4 GH |
279 | }; |
280 | ||
419ad672 GH |
281 | static void serial_pci_register_types(void) |
282 | { | |
283 | type_register_static(&serial_pci_info); | |
d66bbea4 GH |
284 | type_register_static(&multi_2x_serial_pci_info); |
285 | type_register_static(&multi_4x_serial_pci_info); | |
419ad672 GH |
286 | } |
287 | ||
288 | type_init(serial_pci_register_types) |