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20#include "qemu/osdep.h"
21#include "qemu/error-report.h"
22#include "qemu/module.h"
23#include "qapi/error.h"
24#include "hw/hw.h"
25#include "monitor/monitor.h"
26#include "hw/sysbus.h"
27#include "sysemu/sysemu.h"
28#include "hw/isa/isa.h"
29
30static ISABus *isabus;
31
32static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent);
33static char *isabus_get_fw_dev_path(DeviceState *dev);
34
35static void isa_bus_class_init(ObjectClass *klass, void *data)
36{
37 BusClass *k = BUS_CLASS(klass);
38
39 k->print_dev = isabus_dev_print;
40 k->get_fw_dev_path = isabus_get_fw_dev_path;
41}
42
43static const TypeInfo isa_dma_info = {
44 .name = TYPE_ISADMA,
45 .parent = TYPE_INTERFACE,
46 .class_size = sizeof(IsaDmaClass),
47};
48
49static const TypeInfo isa_bus_info = {
50 .name = TYPE_ISA_BUS,
51 .parent = TYPE_BUS,
52 .instance_size = sizeof(ISABus),
53 .class_init = isa_bus_class_init,
54};
55
56ISABus *isa_bus_new(DeviceState *dev, MemoryRegion* address_space,
57 MemoryRegion *address_space_io, Error **errp)
58{
59 if (isabus) {
60 error_setg(errp, "Can't create a second ISA bus");
61 return NULL;
62 }
63 if (!dev) {
64 dev = qdev_create(NULL, "isabus-bridge");
65 qdev_init_nofail(dev);
66 }
67
68 isabus = ISA_BUS(qbus_create(TYPE_ISA_BUS, dev, NULL));
69 isabus->address_space = address_space;
70 isabus->address_space_io = address_space_io;
71 return isabus;
72}
73
74void isa_bus_irqs(ISABus *bus, qemu_irq *irqs)
75{
76 bus->irqs = irqs;
77}
78
79
80
81
82
83
84
85qemu_irq isa_get_irq(ISADevice *dev, unsigned isairq)
86{
87 assert(!dev || ISA_BUS(qdev_get_parent_bus(DEVICE(dev))) == isabus);
88 if (isairq >= ISA_NUM_IRQS) {
89 hw_error("isa irq %d invalid", isairq);
90 }
91 return isabus->irqs[isairq];
92}
93
94void isa_init_irq(ISADevice *dev, qemu_irq *p, unsigned isairq)
95{
96 assert(dev->nirqs < ARRAY_SIZE(dev->isairq));
97 if (isairq >= ISA_NUM_IRQS) {
98 hw_error("isa irq %d invalid", isairq);
99 }
100 dev->isairq[dev->nirqs] = isairq;
101 *p = isa_get_irq(dev, isairq);
102 dev->nirqs++;
103}
104
105void isa_connect_gpio_out(ISADevice *isadev, int gpioirq, unsigned isairq)
106{
107 qemu_irq irq;
108 isa_init_irq(isadev, &irq, isairq);
109 qdev_connect_gpio_out(DEVICE(isadev), gpioirq, irq);
110}
111
112void isa_bus_dma(ISABus *bus, IsaDma *dma8, IsaDma *dma16)
113{
114 assert(bus && dma8 && dma16);
115 assert(!bus->dma[0] && !bus->dma[1]);
116 bus->dma[0] = dma8;
117 bus->dma[1] = dma16;
118}
119
120IsaDma *isa_get_dma(ISABus *bus, int nchan)
121{
122 assert(bus);
123 return bus->dma[nchan > 3 ? 1 : 0];
124}
125
126static inline void isa_init_ioport(ISADevice *dev, uint16_t ioport)
127{
128 if (dev && (dev->ioport_id == 0 || ioport < dev->ioport_id)) {
129 dev->ioport_id = ioport;
130 }
131}
132
133void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start)
134{
135 memory_region_add_subregion(isabus->address_space_io, start, io);
136 isa_init_ioport(dev, start);
137}
138
139void isa_register_portio_list(ISADevice *dev,
140 PortioList *piolist, uint16_t start,
141 const MemoryRegionPortio *pio_start,
142 void *opaque, const char *name)
143{
144 assert(piolist && !piolist->owner);
145
146
147
148
149 isa_init_ioport(dev, start);
150
151 portio_list_init(piolist, OBJECT(dev), pio_start, opaque, name);
152 portio_list_add(piolist, isabus->address_space_io, start);
153}
154
155static void isa_device_init(Object *obj)
156{
157 ISADevice *dev = ISA_DEVICE(obj);
158
159 dev->isairq[0] = -1;
160 dev->isairq[1] = -1;
161}
162
163ISADevice *isa_create(ISABus *bus, const char *name)
164{
165 DeviceState *dev;
166
167 dev = qdev_create(BUS(bus), name);
168 return ISA_DEVICE(dev);
169}
170
171ISADevice *isa_try_create(ISABus *bus, const char *name)
172{
173 DeviceState *dev;
174
175 dev = qdev_try_create(BUS(bus), name);
176 return ISA_DEVICE(dev);
177}
178
179ISADevice *isa_create_simple(ISABus *bus, const char *name)
180{
181 ISADevice *dev;
182
183 dev = isa_create(bus, name);
184 qdev_init_nofail(DEVICE(dev));
185 return dev;
186}
187
188ISADevice *isa_vga_init(ISABus *bus)
189{
190 switch (vga_interface_type) {
191 case VGA_CIRRUS:
192 return isa_create_simple(bus, "isa-cirrus-vga");
193 case VGA_QXL:
194 error_report("%s: qxl: no PCI bus", __func__);
195 return NULL;
196 case VGA_STD:
197 return isa_create_simple(bus, "isa-vga");
198 case VGA_VMWARE:
199 error_report("%s: vmware_vga: no PCI bus", __func__);
200 return NULL;
201 case VGA_VIRTIO:
202 error_report("%s: virtio-vga: no PCI bus", __func__);
203 return NULL;
204 case VGA_NONE:
205 default:
206 return NULL;
207 }
208}
209
210void isa_build_aml(ISABus *bus, Aml *scope)
211{
212 BusChild *kid;
213 ISADevice *dev;
214 ISADeviceClass *dc;
215
216 QTAILQ_FOREACH(kid, &bus->parent_obj.children, sibling) {
217 dev = ISA_DEVICE(kid->child);
218 dc = ISA_DEVICE_GET_CLASS(dev);
219 if (dc->build_aml) {
220 dc->build_aml(dev, scope);
221 }
222 }
223}
224
225static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent)
226{
227 ISADevice *d = ISA_DEVICE(dev);
228
229 if (d->isairq[1] != -1) {
230 monitor_printf(mon, "%*sisa irqs %d,%d\n", indent, "",
231 d->isairq[0], d->isairq[1]);
232 } else if (d->isairq[0] != -1) {
233 monitor_printf(mon, "%*sisa irq %d\n", indent, "",
234 d->isairq[0]);
235 }
236}
237
238static void isabus_bridge_class_init(ObjectClass *klass, void *data)
239{
240 DeviceClass *dc = DEVICE_CLASS(klass);
241
242 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
243 dc->fw_name = "isa";
244}
245
246static const TypeInfo isabus_bridge_info = {
247 .name = "isabus-bridge",
248 .parent = TYPE_SYS_BUS_DEVICE,
249 .instance_size = sizeof(SysBusDevice),
250 .class_init = isabus_bridge_class_init,
251};
252
253static void isa_device_class_init(ObjectClass *klass, void *data)
254{
255 DeviceClass *k = DEVICE_CLASS(klass);
256 k->bus_type = TYPE_ISA_BUS;
257}
258
259static const TypeInfo isa_device_type_info = {
260 .name = TYPE_ISA_DEVICE,
261 .parent = TYPE_DEVICE,
262 .instance_size = sizeof(ISADevice),
263 .instance_init = isa_device_init,
264 .abstract = true,
265 .class_size = sizeof(ISADeviceClass),
266 .class_init = isa_device_class_init,
267};
268
269static void isabus_register_types(void)
270{
271 type_register_static(&isa_dma_info);
272 type_register_static(&isa_bus_info);
273 type_register_static(&isabus_bridge_info);
274 type_register_static(&isa_device_type_info);
275}
276
277static char *isabus_get_fw_dev_path(DeviceState *dev)
278{
279 ISADevice *d = ISA_DEVICE(dev);
280 char path[40];
281 int off;
282
283 off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev));
284 if (d->ioport_id) {
285 snprintf(path + off, sizeof(path) - off, "@%04x", d->ioport_id);
286 }
287
288 return g_strdup(path);
289}
290
291MemoryRegion *isa_address_space(ISADevice *dev)
292{
293 if (dev) {
294 return isa_bus_from_device(dev)->address_space;
295 }
296
297 return isabus->address_space;
298}
299
300MemoryRegion *isa_address_space_io(ISADevice *dev)
301{
302 if (dev) {
303 return isa_bus_from_device(dev)->address_space_io;
304 }
305
306 return isabus->address_space_io;
307}
308
309type_init(isabus_register_types)
310