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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 | ||
0d09e41a | 28 | #include "hw/char/serial.h" |
83c9f4ca | 29 | #include "hw/pci/pci.h" |
db895a1e | 30 | #include "qapi/qmp/qerror.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 | ||
419ad672 GH |
51 | static 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; |
419ad672 GH |
56 | |
57 | s->baudbase = 115200; | |
db895a1e AF |
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); |
419ad672 GH |
70 | pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io); |
71 | return 0; | |
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 | ||
88 | static 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; |
d66bbea4 GH |
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); |
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, | |
112 | pci->ports); | |
113 | ||
114 | for (i = 0; i < pci->ports; i++) { | |
115 | s = pci->state + i; | |
116 | s->baudbase = 115200; | |
db895a1e AF |
117 | serial_realize_core(s, &err); |
118 | if (err != NULL) { | |
119 | qerror_report_err(err); | |
120 | error_free(err); | |
121 | return -1; | |
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 GH |
127 | memory_region_add_subregion(&pci->iobar, 8 * i, &s->io); |
128 | } | |
129 | return 0; | |
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); | |
138 | memory_region_destroy(&s->io); | |
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 | 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); |
d66bbea4 GH |
157 | } |
158 | ||
419ad672 GH |
159 | static const VMStateDescription vmstate_pci_serial = { |
160 | .name = "pci-serial", | |
161 | .version_id = 1, | |
162 | .minimum_version_id = 1, | |
d49805ae | 163 | .fields = (VMStateField[]) { |
419ad672 GH |
164 | VMSTATE_PCI_DEVICE(dev, PCISerialState), |
165 | VMSTATE_STRUCT(state, PCISerialState, 0, vmstate_serial, SerialState), | |
166 | VMSTATE_END_OF_LIST() | |
167 | } | |
168 | }; | |
169 | ||
d66bbea4 GH |
170 | static const VMStateDescription vmstate_pci_multi_serial = { |
171 | .name = "pci-serial-multi", | |
172 | .version_id = 1, | |
173 | .minimum_version_id = 1, | |
d49805ae | 174 | .fields = (VMStateField[]) { |
d66bbea4 GH |
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 | ||
419ad672 GH |
183 | static Property serial_pci_properties[] = { |
184 | DEFINE_PROP_CHR("chardev", PCISerialState, state.chr), | |
13cc2c3e | 185 | DEFINE_PROP_UINT8("prog_if", PCISerialState, prog_if, 0x02), |
419ad672 GH |
186 | DEFINE_PROP_END_OF_LIST(), |
187 | }; | |
188 | ||
d66bbea4 GH |
189 | static 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), |
d66bbea4 GH |
193 | DEFINE_PROP_END_OF_LIST(), |
194 | }; | |
195 | ||
196 | static 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), |
d66bbea4 GH |
202 | DEFINE_PROP_END_OF_LIST(), |
203 | }; | |
204 | ||
419ad672 GH |
205 | static 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; | |
5c03a254 PB |
211 | pc->vendor_id = PCI_VENDOR_ID_REDHAT; |
212 | pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL; | |
419ad672 GH |
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); |
419ad672 GH |
218 | } |
219 | ||
d66bbea4 GH |
220 | static 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; | |
5c03a254 PB |
226 | pc->vendor_id = PCI_VENDOR_ID_REDHAT; |
227 | pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL2; | |
d66bbea4 GH |
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); |
d66bbea4 GH |
233 | } |
234 | ||
235 | static 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; | |
5c03a254 PB |
241 | pc->vendor_id = PCI_VENDOR_ID_REDHAT; |
242 | pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL4; | |
d66bbea4 GH |
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); |
d66bbea4 GH |
248 | } |
249 | ||
8c43a6f0 | 250 | static const TypeInfo serial_pci_info = { |
419ad672 GH |
251 | .name = "pci-serial", |
252 | .parent = TYPE_PCI_DEVICE, | |
253 | .instance_size = sizeof(PCISerialState), | |
254 | .class_init = serial_pci_class_initfn, | |
255 | }; | |
256 | ||
8c43a6f0 | 257 | static const TypeInfo multi_2x_serial_pci_info = { |
d66bbea4 GH |
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 | 264 | static const TypeInfo multi_4x_serial_pci_info = { |
d66bbea4 GH |
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 | ||
419ad672 GH |
271 | static void serial_pci_register_types(void) |
272 | { | |
273 | type_register_static(&serial_pci_info); | |
d66bbea4 GH |
274 | type_register_static(&multi_2x_serial_pci_info); |
275 | type_register_static(&multi_4x_serial_pci_info); | |
419ad672 GH |
276 | } |
277 | ||
278 | type_init(serial_pci_register_types) |