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20#include "qemu/osdep.h"
21#include "qapi/error.h"
22#include "hw/sysbus.h"
23#include "monitor/monitor.h"
24#include "exec/address-spaces.h"
25
26static void sysbus_dev_print(Monitor *mon, DeviceState *dev, int indent);
27static char *sysbus_get_fw_dev_path(DeviceState *dev);
28
29typedef struct SysBusFind {
30 void *opaque;
31 FindSysbusDeviceFunc *func;
32} SysBusFind;
33
34
35static int find_sysbus_device(Object *obj, void *opaque)
36{
37 SysBusFind *find = opaque;
38 Object *dev;
39 SysBusDevice *sbdev;
40
41 dev = object_dynamic_cast(obj, TYPE_SYS_BUS_DEVICE);
42 sbdev = (SysBusDevice *)dev;
43
44 if (!sbdev) {
45
46 return object_child_foreach(obj, find_sysbus_device, opaque);
47 }
48
49 find->func(sbdev, find->opaque);
50
51 return 0;
52}
53
54
55
56
57
58void foreach_dynamic_sysbus_device(FindSysbusDeviceFunc *func, void *opaque)
59{
60 Object *container;
61 SysBusFind find = {
62 .func = func,
63 .opaque = opaque,
64 };
65
66
67 container = container_get(qdev_get_machine(), "/peripheral");
68 find_sysbus_device(container, &find);
69 container = container_get(qdev_get_machine(), "/peripheral-anon");
70 find_sysbus_device(container, &find);
71}
72
73
74static void system_bus_class_init(ObjectClass *klass, void *data)
75{
76 BusClass *k = BUS_CLASS(klass);
77
78 k->print_dev = sysbus_dev_print;
79 k->get_fw_dev_path = sysbus_get_fw_dev_path;
80}
81
82static const TypeInfo system_bus_info = {
83 .name = TYPE_SYSTEM_BUS,
84 .parent = TYPE_BUS,
85 .instance_size = sizeof(BusState),
86 .class_init = system_bus_class_init,
87};
88
89
90bool sysbus_has_irq(SysBusDevice *dev, int n)
91{
92 char *prop = g_strdup_printf("%s[%d]", SYSBUS_DEVICE_GPIO_IRQ, n);
93 ObjectProperty *r;
94
95 r = object_property_find(OBJECT(dev), prop, NULL);
96 g_free(prop);
97
98 return (r != NULL);
99}
100
101bool sysbus_is_irq_connected(SysBusDevice *dev, int n)
102{
103 return !!sysbus_get_connected_irq(dev, n);
104}
105
106qemu_irq sysbus_get_connected_irq(SysBusDevice *dev, int n)
107{
108 DeviceState *d = DEVICE(dev);
109 return qdev_get_gpio_out_connector(d, SYSBUS_DEVICE_GPIO_IRQ, n);
110}
111
112void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq)
113{
114 SysBusDeviceClass *sbd = SYS_BUS_DEVICE_GET_CLASS(dev);
115
116 qdev_connect_gpio_out_named(DEVICE(dev), SYSBUS_DEVICE_GPIO_IRQ, n, irq);
117
118 if (sbd->connect_irq_notifier) {
119 sbd->connect_irq_notifier(dev, irq);
120 }
121}
122
123
124bool sysbus_has_mmio(SysBusDevice *dev, unsigned int n)
125{
126 return (n < dev->num_mmio);
127}
128
129static void sysbus_mmio_map_common(SysBusDevice *dev, int n, hwaddr addr,
130 bool may_overlap, int priority)
131{
132 assert(n >= 0 && n < dev->num_mmio);
133
134 if (dev->mmio[n].addr == addr) {
135
136 return;
137 }
138 if (dev->mmio[n].addr != (hwaddr)-1) {
139
140 memory_region_del_subregion(get_system_memory(), dev->mmio[n].memory);
141 }
142 dev->mmio[n].addr = addr;
143 if (may_overlap) {
144 memory_region_add_subregion_overlap(get_system_memory(),
145 addr,
146 dev->mmio[n].memory,
147 priority);
148 }
149 else {
150 memory_region_add_subregion(get_system_memory(),
151 addr,
152 dev->mmio[n].memory);
153 }
154}
155
156void sysbus_mmio_map(SysBusDevice *dev, int n, hwaddr addr)
157{
158 sysbus_mmio_map_common(dev, n, addr, false, 0);
159}
160
161void sysbus_mmio_map_overlap(SysBusDevice *dev, int n, hwaddr addr,
162 int priority)
163{
164 sysbus_mmio_map_common(dev, n, addr, true, priority);
165}
166
167
168void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p)
169{
170 qdev_init_gpio_out_named(DEVICE(dev), p, SYSBUS_DEVICE_GPIO_IRQ, 1);
171}
172
173
174void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target)
175{
176 qdev_pass_gpios(DEVICE(target), DEVICE(dev), SYSBUS_DEVICE_GPIO_IRQ);
177}
178
179void sysbus_init_mmio(SysBusDevice *dev, MemoryRegion *memory)
180{
181 int n;
182
183 assert(dev->num_mmio < QDEV_MAX_MMIO);
184 n = dev->num_mmio++;
185 dev->mmio[n].addr = -1;
186 dev->mmio[n].memory = memory;
187}
188
189MemoryRegion *sysbus_mmio_get_region(SysBusDevice *dev, int n)
190{
191 return dev->mmio[n].memory;
192}
193
194void sysbus_init_ioports(SysBusDevice *dev, uint32_t ioport, uint32_t size)
195{
196 uint32_t i;
197
198 for (i = 0; i < size; i++) {
199 assert(dev->num_pio < QDEV_MAX_PIO);
200 dev->pio[dev->num_pio++] = ioport++;
201 }
202}
203
204
205static void sysbus_realize(DeviceState *dev, Error **errp)
206{
207 SysBusDevice *sd = SYS_BUS_DEVICE(dev);
208 SysBusDeviceClass *sbc = SYS_BUS_DEVICE_GET_CLASS(sd);
209
210 if (!sbc->init) {
211 return;
212 }
213 if (sbc->init(sd) < 0) {
214 error_setg(errp, "Device initialization failed");
215 }
216}
217
218DeviceState *sysbus_create_varargs(const char *name,
219 hwaddr addr, ...)
220{
221 DeviceState *dev;
222 SysBusDevice *s;
223 va_list va;
224 qemu_irq irq;
225 int n;
226
227 dev = qdev_create(NULL, name);
228 s = SYS_BUS_DEVICE(dev);
229 qdev_init_nofail(dev);
230 if (addr != (hwaddr)-1) {
231 sysbus_mmio_map(s, 0, addr);
232 }
233 va_start(va, addr);
234 n = 0;
235 while (1) {
236 irq = va_arg(va, qemu_irq);
237 if (!irq) {
238 break;
239 }
240 sysbus_connect_irq(s, n, irq);
241 n++;
242 }
243 va_end(va);
244 return dev;
245}
246
247DeviceState *sysbus_try_create_varargs(const char *name,
248 hwaddr addr, ...)
249{
250 DeviceState *dev;
251 SysBusDevice *s;
252 va_list va;
253 qemu_irq irq;
254 int n;
255
256 dev = qdev_try_create(NULL, name);
257 if (!dev) {
258 return NULL;
259 }
260 s = SYS_BUS_DEVICE(dev);
261 qdev_init_nofail(dev);
262 if (addr != (hwaddr)-1) {
263 sysbus_mmio_map(s, 0, addr);
264 }
265 va_start(va, addr);
266 n = 0;
267 while (1) {
268 irq = va_arg(va, qemu_irq);
269 if (!irq) {
270 break;
271 }
272 sysbus_connect_irq(s, n, irq);
273 n++;
274 }
275 va_end(va);
276 return dev;
277}
278
279static void sysbus_dev_print(Monitor *mon, DeviceState *dev, int indent)
280{
281 SysBusDevice *s = SYS_BUS_DEVICE(dev);
282 hwaddr size;
283 int i;
284
285 for (i = 0; i < s->num_mmio; i++) {
286 size = memory_region_size(s->mmio[i].memory);
287 monitor_printf(mon, "%*smmio " TARGET_FMT_plx "/" TARGET_FMT_plx "\n",
288 indent, "", s->mmio[i].addr, size);
289 }
290}
291
292static char *sysbus_get_fw_dev_path(DeviceState *dev)
293{
294 SysBusDevice *s = SYS_BUS_DEVICE(dev);
295 SysBusDeviceClass *sbc = SYS_BUS_DEVICE_GET_CLASS(s);
296
297 char *addr, *fw_dev_path;
298
299 if (s->num_mmio) {
300 return g_strdup_printf("%s@" TARGET_FMT_plx, qdev_fw_name(dev),
301 s->mmio[0].addr);
302 }
303 if (s->num_pio) {
304 return g_strdup_printf("%s@i%04x", qdev_fw_name(dev), s->pio[0]);
305 }
306 if (sbc->explicit_ofw_unit_address) {
307 addr = sbc->explicit_ofw_unit_address(s);
308 if (addr) {
309 fw_dev_path = g_strdup_printf("%s@%s", qdev_fw_name(dev), addr);
310 g_free(addr);
311 return fw_dev_path;
312 }
313 }
314 return g_strdup(qdev_fw_name(dev));
315}
316
317void sysbus_add_io(SysBusDevice *dev, hwaddr addr,
318 MemoryRegion *mem)
319{
320 memory_region_add_subregion(get_system_io(), addr, mem);
321}
322
323MemoryRegion *sysbus_address_space(SysBusDevice *dev)
324{
325 return get_system_memory();
326}
327
328static void sysbus_device_class_init(ObjectClass *klass, void *data)
329{
330 DeviceClass *k = DEVICE_CLASS(klass);
331 k->realize = sysbus_realize;
332 k->bus_type = TYPE_SYSTEM_BUS;
333
334
335
336
337
338
339
340
341
342
343 k->user_creatable = false;
344}
345
346static const TypeInfo sysbus_device_type_info = {
347 .name = TYPE_SYS_BUS_DEVICE,
348 .parent = TYPE_DEVICE,
349 .instance_size = sizeof(SysBusDevice),
350 .abstract = true,
351 .class_size = sizeof(SysBusDeviceClass),
352 .class_init = sysbus_device_class_init,
353};
354
355
356static BusState *main_system_bus;
357
358static void main_system_bus_create(void)
359{
360
361
362 main_system_bus = g_malloc0(system_bus_info.instance_size);
363 qbus_create_inplace(main_system_bus, system_bus_info.instance_size,
364 TYPE_SYSTEM_BUS, NULL, "main-system-bus");
365 OBJECT(main_system_bus)->free = g_free;
366 object_property_add_child(container_get(qdev_get_machine(),
367 "/unattached"),
368 "sysbus", OBJECT(main_system_bus), NULL);
369}
370
371BusState *sysbus_get_default(void)
372{
373 if (!main_system_bus) {
374 main_system_bus_create();
375 }
376 return main_system_bus;
377}
378
379void sysbus_init_child_obj(Object *parent, const char *childname, void *child,
380 size_t childsize, const char *childtype)
381{
382 object_initialize_child(parent, childname, child, childsize, childtype,
383 &error_abort, NULL);
384 qdev_set_parent_bus(DEVICE(child), sysbus_get_default());
385}
386
387static void sysbus_register_types(void)
388{
389 type_register_static(&system_bus_info);
390 type_register_static(&sysbus_device_type_info);
391}
392
393type_init(sysbus_register_types)
394