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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" |
0d09e41a | 29 | #include "hw/char/serial.h" |
83c9f4ca | 30 | #include "hw/pci/pci.h" |
419ad672 | 31 | |
d66bbea4 GH |
32 | #define PCI_SERIAL_MAX_PORTS 4 |
33 | ||
419ad672 GH |
34 | typedef struct PCISerialState { |
35 | PCIDevice dev; | |
36 | SerialState state; | |
13cc2c3e | 37 | uint8_t prog_if; |
419ad672 GH |
38 | } PCISerialState; |
39 | ||
d66bbea4 GH |
40 | typedef 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; |
d66bbea4 GH |
49 | } PCIMultiSerialState; |
50 | ||
a48da7b5 GH |
51 | static void multi_serial_pci_exit(PCIDevice *dev); |
52 | ||
28d85904 | 53 | static void serial_pci_realize(PCIDevice *dev, Error **errp) |
419ad672 GH |
54 | { |
55 | PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev); | |
56 | SerialState *s = &pci->state; | |
db895a1e | 57 | Error *err = NULL; |
419ad672 GH |
58 | |
59 | s->baudbase = 115200; | |
db895a1e AF |
60 | serial_realize_core(s, &err); |
61 | if (err != NULL) { | |
28d85904 MA |
62 | error_propagate(errp, err); |
63 | return; | |
db895a1e | 64 | } |
419ad672 | 65 | |
13cc2c3e | 66 | pci->dev.config[PCI_CLASS_PROG] = pci->prog_if; |
419ad672 | 67 | pci->dev.config[PCI_INTERRUPT_PIN] = 0x01; |
9e64f8a3 | 68 | s->irq = pci_allocate_irq(&pci->dev); |
419ad672 | 69 | |
300b1fc6 | 70 | memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s, "serial", 8); |
419ad672 | 71 | pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io); |
419ad672 GH |
72 | } |
73 | ||
d66bbea4 GH |
74 | static 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); |
d66bbea4 GH |
86 | } |
87 | ||
28d85904 | 88 | static void multi_serial_pci_realize(PCIDevice *dev, Error **errp) |
d66bbea4 GH |
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; |
a48da7b5 | 94 | int i, nr_ports = 0; |
d66bbea4 GH |
95 | |
96 | switch (pc->device_id) { | |
97 | case 0x0003: | |
a48da7b5 | 98 | nr_ports = 2; |
d66bbea4 GH |
99 | break; |
100 | case 0x0004: | |
a48da7b5 | 101 | nr_ports = 4; |
d66bbea4 GH |
102 | break; |
103 | } | |
a48da7b5 GH |
104 | assert(nr_ports > 0); |
105 | assert(nr_ports <= PCI_SERIAL_MAX_PORTS); | |
d66bbea4 | 106 | |
13cc2c3e | 107 | pci->dev.config[PCI_CLASS_PROG] = pci->prog_if; |
d66bbea4 | 108 | pci->dev.config[PCI_INTERRUPT_PIN] = 0x01; |
a48da7b5 | 109 | memory_region_init(&pci->iobar, OBJECT(pci), "multiserial", 8 * nr_ports); |
d66bbea4 GH |
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, | |
a48da7b5 | 112 | nr_ports); |
d66bbea4 | 113 | |
a48da7b5 | 114 | for (i = 0; i < nr_ports; i++) { |
d66bbea4 GH |
115 | s = pci->state + i; |
116 | s->baudbase = 115200; | |
db895a1e AF |
117 | serial_realize_core(s, &err); |
118 | if (err != NULL) { | |
28d85904 | 119 | error_propagate(errp, err); |
a48da7b5 | 120 | multi_serial_pci_exit(dev); |
28d85904 | 121 | return; |
db895a1e | 122 | } |
d66bbea4 GH |
123 | s->irq = pci->irqs[i]; |
124 | pci->name[i] = g_strdup_printf("uart #%d", i+1); | |
300b1fc6 PB |
125 | memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s, |
126 | pci->name[i], 8); | |
d66bbea4 | 127 | memory_region_add_subregion(&pci->iobar, 8 * i, &s->io); |
a48da7b5 | 128 | pci->ports++; |
d66bbea4 | 129 | } |
d66bbea4 GH |
130 | } |
131 | ||
419ad672 GH |
132 | static 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); | |
9e64f8a3 | 138 | qemu_free_irq(s->irq); |
419ad672 GH |
139 | } |
140 | ||
d66bbea4 GH |
141 | static void multi_serial_pci_exit(PCIDevice *dev) |
142 | { | |
143 | PCIMultiSerialState *pci = DO_UPCAST(PCIMultiSerialState, dev, dev); | |
144 | SerialState *s; | |
145 | int i; | |
146 | ||
147 | for (i = 0; i < pci->ports; i++) { | |
148 | s = pci->state + i; | |
149 | serial_exit_core(s); | |
7497bce6 | 150 | memory_region_del_subregion(&pci->iobar, &s->io); |
d66bbea4 GH |
151 | g_free(pci->name[i]); |
152 | } | |
f173d57a | 153 | qemu_free_irqs(pci->irqs, pci->ports); |
d66bbea4 GH |
154 | } |
155 | ||
419ad672 GH |
156 | static const VMStateDescription vmstate_pci_serial = { |
157 | .name = "pci-serial", | |
158 | .version_id = 1, | |
159 | .minimum_version_id = 1, | |
d49805ae | 160 | .fields = (VMStateField[]) { |
419ad672 GH |
161 | VMSTATE_PCI_DEVICE(dev, PCISerialState), |
162 | VMSTATE_STRUCT(state, PCISerialState, 0, vmstate_serial, SerialState), | |
163 | VMSTATE_END_OF_LIST() | |
164 | } | |
165 | }; | |
166 | ||
d66bbea4 GH |
167 | static const VMStateDescription vmstate_pci_multi_serial = { |
168 | .name = "pci-serial-multi", | |
169 | .version_id = 1, | |
170 | .minimum_version_id = 1, | |
d49805ae | 171 | .fields = (VMStateField[]) { |
d66bbea4 GH |
172 | VMSTATE_PCI_DEVICE(dev, PCIMultiSerialState), |
173 | VMSTATE_STRUCT_ARRAY(state, PCIMultiSerialState, PCI_SERIAL_MAX_PORTS, | |
174 | 0, vmstate_serial, SerialState), | |
175 | VMSTATE_UINT32_ARRAY(level, PCIMultiSerialState, PCI_SERIAL_MAX_PORTS), | |
176 | VMSTATE_END_OF_LIST() | |
177 | } | |
178 | }; | |
179 | ||
419ad672 GH |
180 | static Property serial_pci_properties[] = { |
181 | DEFINE_PROP_CHR("chardev", PCISerialState, state.chr), | |
13cc2c3e | 182 | DEFINE_PROP_UINT8("prog_if", PCISerialState, prog_if, 0x02), |
419ad672 GH |
183 | DEFINE_PROP_END_OF_LIST(), |
184 | }; | |
185 | ||
d66bbea4 GH |
186 | static Property multi_2x_serial_pci_properties[] = { |
187 | DEFINE_PROP_CHR("chardev1", PCIMultiSerialState, state[0].chr), | |
188 | DEFINE_PROP_CHR("chardev2", PCIMultiSerialState, state[1].chr), | |
13cc2c3e | 189 | DEFINE_PROP_UINT8("prog_if", PCIMultiSerialState, prog_if, 0x02), |
d66bbea4 GH |
190 | DEFINE_PROP_END_OF_LIST(), |
191 | }; | |
192 | ||
193 | static Property multi_4x_serial_pci_properties[] = { | |
194 | DEFINE_PROP_CHR("chardev1", PCIMultiSerialState, state[0].chr), | |
195 | DEFINE_PROP_CHR("chardev2", PCIMultiSerialState, state[1].chr), | |
196 | DEFINE_PROP_CHR("chardev3", PCIMultiSerialState, state[2].chr), | |
197 | DEFINE_PROP_CHR("chardev4", PCIMultiSerialState, state[3].chr), | |
13cc2c3e | 198 | DEFINE_PROP_UINT8("prog_if", PCIMultiSerialState, prog_if, 0x02), |
d66bbea4 GH |
199 | DEFINE_PROP_END_OF_LIST(), |
200 | }; | |
201 | ||
419ad672 GH |
202 | static void serial_pci_class_initfn(ObjectClass *klass, void *data) |
203 | { | |
204 | DeviceClass *dc = DEVICE_CLASS(klass); | |
205 | PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass); | |
28d85904 | 206 | pc->realize = serial_pci_realize; |
419ad672 | 207 | pc->exit = serial_pci_exit; |
5c03a254 PB |
208 | pc->vendor_id = PCI_VENDOR_ID_REDHAT; |
209 | pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL; | |
419ad672 GH |
210 | pc->revision = 1; |
211 | pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL; | |
212 | dc->vmsd = &vmstate_pci_serial; | |
213 | dc->props = serial_pci_properties; | |
125ee0ed | 214 | set_bit(DEVICE_CATEGORY_INPUT, dc->categories); |
419ad672 GH |
215 | } |
216 | ||
d66bbea4 GH |
217 | static void multi_2x_serial_pci_class_initfn(ObjectClass *klass, void *data) |
218 | { | |
219 | DeviceClass *dc = DEVICE_CLASS(klass); | |
220 | PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass); | |
28d85904 | 221 | pc->realize = multi_serial_pci_realize; |
d66bbea4 | 222 | pc->exit = multi_serial_pci_exit; |
5c03a254 PB |
223 | pc->vendor_id = PCI_VENDOR_ID_REDHAT; |
224 | pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL2; | |
d66bbea4 GH |
225 | pc->revision = 1; |
226 | pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL; | |
227 | dc->vmsd = &vmstate_pci_multi_serial; | |
228 | dc->props = multi_2x_serial_pci_properties; | |
125ee0ed | 229 | set_bit(DEVICE_CATEGORY_INPUT, dc->categories); |
d66bbea4 GH |
230 | } |
231 | ||
232 | static void multi_4x_serial_pci_class_initfn(ObjectClass *klass, void *data) | |
233 | { | |
234 | DeviceClass *dc = DEVICE_CLASS(klass); | |
235 | PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass); | |
28d85904 | 236 | pc->realize = multi_serial_pci_realize; |
d66bbea4 | 237 | pc->exit = multi_serial_pci_exit; |
5c03a254 PB |
238 | pc->vendor_id = PCI_VENDOR_ID_REDHAT; |
239 | pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL4; | |
d66bbea4 GH |
240 | pc->revision = 1; |
241 | pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL; | |
242 | dc->vmsd = &vmstate_pci_multi_serial; | |
243 | dc->props = multi_4x_serial_pci_properties; | |
125ee0ed | 244 | set_bit(DEVICE_CATEGORY_INPUT, dc->categories); |
d66bbea4 GH |
245 | } |
246 | ||
8c43a6f0 | 247 | static const TypeInfo serial_pci_info = { |
419ad672 GH |
248 | .name = "pci-serial", |
249 | .parent = TYPE_PCI_DEVICE, | |
250 | .instance_size = sizeof(PCISerialState), | |
251 | .class_init = serial_pci_class_initfn, | |
252 | }; | |
253 | ||
8c43a6f0 | 254 | static const TypeInfo multi_2x_serial_pci_info = { |
d66bbea4 GH |
255 | .name = "pci-serial-2x", |
256 | .parent = TYPE_PCI_DEVICE, | |
257 | .instance_size = sizeof(PCIMultiSerialState), | |
258 | .class_init = multi_2x_serial_pci_class_initfn, | |
259 | }; | |
260 | ||
8c43a6f0 | 261 | static const TypeInfo multi_4x_serial_pci_info = { |
d66bbea4 GH |
262 | .name = "pci-serial-4x", |
263 | .parent = TYPE_PCI_DEVICE, | |
264 | .instance_size = sizeof(PCIMultiSerialState), | |
265 | .class_init = multi_4x_serial_pci_class_initfn, | |
266 | }; | |
267 | ||
419ad672 GH |
268 | static void serial_pci_register_types(void) |
269 | { | |
270 | type_register_static(&serial_pci_info); | |
d66bbea4 GH |
271 | type_register_static(&multi_2x_serial_pci_info); |
272 | type_register_static(&multi_4x_serial_pci_info); | |
419ad672 GH |
273 | } |
274 | ||
275 | type_init(serial_pci_register_types) |