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28#include "qemu/osdep.h"
29#include "qapi/error.h"
30#include "hw/char/serial.h"
31#include "hw/pci/pci.h"
32
33#define PCI_SERIAL_MAX_PORTS 4
34
35typedef struct PCISerialState {
36 PCIDevice dev;
37 SerialState state;
38 uint8_t prog_if;
39} PCISerialState;
40
41typedef 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;
49 uint8_t prog_if;
50} PCIMultiSerialState;
51
52static void multi_serial_pci_exit(PCIDevice *dev);
53
54static void serial_pci_realize(PCIDevice *dev, Error **errp)
55{
56 PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev);
57 SerialState *s = &pci->state;
58 Error *err = NULL;
59
60 s->baudbase = 115200;
61 serial_realize_core(s, &err);
62 if (err != NULL) {
63 error_propagate(errp, err);
64 return;
65 }
66
67 pci->dev.config[PCI_CLASS_PROG] = pci->prog_if;
68 pci->dev.config[PCI_INTERRUPT_PIN] = 0x01;
69 s->irq = pci_allocate_irq(&pci->dev);
70
71 memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s, "serial", 8);
72 pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io);
73}
74
75static 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 }
86 pci_set_irq(&pci->dev, pending);
87}
88
89static void multi_serial_pci_realize(PCIDevice *dev, Error **errp)
90{
91 PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev);
92 PCIMultiSerialState *pci = DO_UPCAST(PCIMultiSerialState, dev, dev);
93 SerialState *s;
94 Error *err = NULL;
95 int i, nr_ports = 0;
96
97 switch (pc->device_id) {
98 case 0x0003:
99 nr_ports = 2;
100 break;
101 case 0x0004:
102 nr_ports = 4;
103 break;
104 }
105 assert(nr_ports > 0);
106 assert(nr_ports <= PCI_SERIAL_MAX_PORTS);
107
108 pci->dev.config[PCI_CLASS_PROG] = pci->prog_if;
109 pci->dev.config[PCI_INTERRUPT_PIN] = 0x01;
110 memory_region_init(&pci->iobar, OBJECT(pci), "multiserial", 8 * nr_ports);
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,
113 nr_ports);
114
115 for (i = 0; i < nr_ports; i++) {
116 s = pci->state + i;
117 s->baudbase = 115200;
118 serial_realize_core(s, &err);
119 if (err != NULL) {
120 error_propagate(errp, err);
121 multi_serial_pci_exit(dev);
122 return;
123 }
124 s->irq = pci->irqs[i];
125 pci->name[i] = g_strdup_printf("uart #%d", i+1);
126 memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s,
127 pci->name[i], 8);
128 memory_region_add_subregion(&pci->iobar, 8 * i, &s->io);
129 pci->ports++;
130 }
131}
132
133static 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);
139 qemu_free_irq(s->irq);
140}
141
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);
151 memory_region_del_subregion(&pci->iobar, &s->io);
152 g_free(pci->name[i]);
153 }
154 qemu_free_irqs(pci->irqs, pci->ports);
155}
156
157static const VMStateDescription vmstate_pci_serial = {
158 .name = "pci-serial",
159 .version_id = 1,
160 .minimum_version_id = 1,
161 .fields = (VMStateField[]) {
162 VMSTATE_PCI_DEVICE(dev, PCISerialState),
163 VMSTATE_STRUCT(state, PCISerialState, 0, vmstate_serial, SerialState),
164 VMSTATE_END_OF_LIST()
165 }
166};
167
168static const VMStateDescription vmstate_pci_multi_serial = {
169 .name = "pci-serial-multi",
170 .version_id = 1,
171 .minimum_version_id = 1,
172 .fields = (VMStateField[]) {
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
181static Property serial_pci_properties[] = {
182 DEFINE_PROP_CHR("chardev", PCISerialState, state.chr),
183 DEFINE_PROP_UINT8("prog_if", PCISerialState, prog_if, 0x02),
184 DEFINE_PROP_END_OF_LIST(),
185};
186
187static Property multi_2x_serial_pci_properties[] = {
188 DEFINE_PROP_CHR("chardev1", PCIMultiSerialState, state[0].chr),
189 DEFINE_PROP_CHR("chardev2", PCIMultiSerialState, state[1].chr),
190 DEFINE_PROP_UINT8("prog_if", PCIMultiSerialState, prog_if, 0x02),
191 DEFINE_PROP_END_OF_LIST(),
192};
193
194static 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),
199 DEFINE_PROP_UINT8("prog_if", PCIMultiSerialState, prog_if, 0x02),
200 DEFINE_PROP_END_OF_LIST(),
201};
202
203static void serial_pci_class_initfn(ObjectClass *klass, void *data)
204{
205 DeviceClass *dc = DEVICE_CLASS(klass);
206 PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass);
207 pc->realize = serial_pci_realize;
208 pc->exit = serial_pci_exit;
209 pc->vendor_id = PCI_VENDOR_ID_REDHAT;
210 pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL;
211 pc->revision = 1;
212 pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL;
213 dc->vmsd = &vmstate_pci_serial;
214 dc->props = serial_pci_properties;
215 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
216}
217
218static 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);
222 pc->realize = multi_serial_pci_realize;
223 pc->exit = multi_serial_pci_exit;
224 pc->vendor_id = PCI_VENDOR_ID_REDHAT;
225 pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL2;
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;
230 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
231}
232
233static 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);
237 pc->realize = multi_serial_pci_realize;
238 pc->exit = multi_serial_pci_exit;
239 pc->vendor_id = PCI_VENDOR_ID_REDHAT;
240 pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL4;
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;
245 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
246}
247
248static const TypeInfo serial_pci_info = {
249 .name = "pci-serial",
250 .parent = TYPE_PCI_DEVICE,
251 .instance_size = sizeof(PCISerialState),
252 .class_init = serial_pci_class_initfn,
253};
254
255static const TypeInfo multi_2x_serial_pci_info = {
256 .name = "pci-serial-2x",
257 .parent = TYPE_PCI_DEVICE,
258 .instance_size = sizeof(PCIMultiSerialState),
259 .class_init = multi_2x_serial_pci_class_initfn,
260};
261
262static const TypeInfo multi_4x_serial_pci_info = {
263 .name = "pci-serial-4x",
264 .parent = TYPE_PCI_DEVICE,
265 .instance_size = sizeof(PCIMultiSerialState),
266 .class_init = multi_4x_serial_pci_class_initfn,
267};
268
269static void serial_pci_register_types(void)
270{
271 type_register_static(&serial_pci_info);
272 type_register_static(&multi_2x_serial_pci_info);
273 type_register_static(&multi_4x_serial_pci_info);
274}
275
276type_init(serial_pci_register_types)
277
