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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 "monitor/monitor.h"
25#include "hw/sysbus.h"
26#include "sysemu/sysemu.h"
27#include "hw/isa/isa.h"
28
29static ISABus *isabus;
30
31static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent);
32static char *isabus_get_fw_dev_path(DeviceState *dev);
33
34static void isa_bus_class_init(ObjectClass *klass, void *data)
35{
36 BusClass *k = BUS_CLASS(klass);
37
38 k->print_dev = isabus_dev_print;
39 k->get_fw_dev_path = isabus_get_fw_dev_path;
40}
41
42static const TypeInfo isa_dma_info = {
43 .name = TYPE_ISADMA,
44 .parent = TYPE_INTERFACE,
45 .class_size = sizeof(IsaDmaClass),
46};
47
48static const TypeInfo isa_bus_info = {
49 .name = TYPE_ISA_BUS,
50 .parent = TYPE_BUS,
51 .instance_size = sizeof(ISABus),
52 .class_init = isa_bus_class_init,
53};
54
55ISABus *isa_bus_new(DeviceState *dev, MemoryRegion* address_space,
56 MemoryRegion *address_space_io, Error **errp)
57{
58 if (isabus) {
59 error_setg(errp, "Can't create a second ISA bus");
60 return NULL;
61 }
62 if (!dev) {
63 dev = qdev_new("isabus-bridge");
64 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
65 }
66
67 isabus = ISA_BUS(qbus_new(TYPE_ISA_BUS, dev, NULL));
68 isabus->address_space = address_space;
69 isabus->address_space_io = address_space_io;
70 return isabus;
71}
72
73void isa_bus_irqs(ISABus *bus, qemu_irq *irqs)
74{
75 bus->irqs = irqs;
76}
77
78
79
80
81
82
83
84qemu_irq isa_get_irq(ISADevice *dev, unsigned isairq)
85{
86 assert(!dev || ISA_BUS(qdev_get_parent_bus(DEVICE(dev))) == isabus);
87 assert(isairq < ISA_NUM_IRQS);
88 return isabus->irqs[isairq];
89}
90
91void isa_init_irq(ISADevice *dev, qemu_irq *p, unsigned isairq)
92{
93 assert(dev->nirqs < ARRAY_SIZE(dev->isairq));
94 assert(isairq < ISA_NUM_IRQS);
95 dev->isairq[dev->nirqs] = isairq;
96 *p = isa_get_irq(dev, isairq);
97 dev->nirqs++;
98}
99
100void isa_connect_gpio_out(ISADevice *isadev, int gpioirq, unsigned isairq)
101{
102 qemu_irq irq;
103 isa_init_irq(isadev, &irq, isairq);
104 qdev_connect_gpio_out(DEVICE(isadev), gpioirq, irq);
105}
106
107void isa_bus_dma(ISABus *bus, IsaDma *dma8, IsaDma *dma16)
108{
109 assert(bus && dma8 && dma16);
110 assert(!bus->dma[0] && !bus->dma[1]);
111 bus->dma[0] = dma8;
112 bus->dma[1] = dma16;
113}
114
115IsaDma *isa_get_dma(ISABus *bus, int nchan)
116{
117 assert(bus);
118 return bus->dma[nchan > 3 ? 1 : 0];
119}
120
121static inline void isa_init_ioport(ISADevice *dev, uint16_t ioport)
122{
123 if (dev && (dev->ioport_id == 0 || ioport < dev->ioport_id)) {
124 dev->ioport_id = ioport;
125 }
126}
127
128void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start)
129{
130 memory_region_add_subregion(isabus->address_space_io, start, io);
131 isa_init_ioport(dev, start);
132}
133
134int isa_register_portio_list(ISADevice *dev,
135 PortioList *piolist, uint16_t start,
136 const MemoryRegionPortio *pio_start,
137 void *opaque, const char *name)
138{
139 assert(piolist && !piolist->owner);
140
141 if (!isabus) {
142 return -ENODEV;
143 }
144
145
146
147
148 isa_init_ioport(dev, start);
149
150 portio_list_init(piolist, OBJECT(dev), pio_start, opaque, name);
151 portio_list_add(piolist, isabus->address_space_io, start);
152
153 return 0;
154}
155
156static void isa_device_init(Object *obj)
157{
158 ISADevice *dev = ISA_DEVICE(obj);
159
160 dev->isairq[0] = -1;
161 dev->isairq[1] = -1;
162}
163
164ISADevice *isa_new(const char *name)
165{
166 return ISA_DEVICE(qdev_new(name));
167}
168
169ISADevice *isa_try_new(const char *name)
170{
171 return ISA_DEVICE(qdev_try_new(name));
172}
173
174ISADevice *isa_create_simple(ISABus *bus, const char *name)
175{
176 ISADevice *dev;
177
178 dev = isa_new(name);
179 isa_realize_and_unref(dev, bus, &error_fatal);
180 return dev;
181}
182
183bool isa_realize_and_unref(ISADevice *dev, ISABus *bus, Error **errp)
184{
185 return qdev_realize_and_unref(&dev->parent_obj, &bus->parent_obj, errp);
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