configure: add configure option avx512f_opt
[qemu/ar7.git] / hw / core / sysbus.c
blob08b0311c5f0137ce69bd2049d6b929752960844b
1 /*
2 * System (CPU) Bus device support code
4 * Copyright (c) 2009 CodeSourcery
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
20 #include "qemu/osdep.h"
21 #include "qapi/error.h"
22 #include "qemu/module.h"
23 #include "hw/sysbus.h"
24 #include "monitor/monitor.h"
25 #include "exec/address-spaces.h"
27 static void sysbus_dev_print(Monitor *mon, DeviceState *dev, int indent);
28 static char *sysbus_get_fw_dev_path(DeviceState *dev);
30 typedef struct SysBusFind {
31 void *opaque;
32 FindSysbusDeviceFunc *func;
33 } SysBusFind;
35 /* Run func() for every sysbus device, traverse the tree for everything else */
36 static int find_sysbus_device(Object *obj, void *opaque)
38 SysBusFind *find = opaque;
39 Object *dev;
40 SysBusDevice *sbdev;
42 dev = object_dynamic_cast(obj, TYPE_SYS_BUS_DEVICE);
43 sbdev = (SysBusDevice *)dev;
45 if (!sbdev) {
46 /* Container, traverse it for children */
47 return object_child_foreach(obj, find_sysbus_device, opaque);
50 find->func(sbdev, find->opaque);
52 return 0;
56 * Loop through all dynamically created sysbus devices and call
57 * func() for each instance.
59 void foreach_dynamic_sysbus_device(FindSysbusDeviceFunc *func, void *opaque)
61 Object *container;
62 SysBusFind find = {
63 .func = func,
64 .opaque = opaque,
67 /* Loop through all sysbus devices that were spawened outside the machine */
68 container = container_get(qdev_get_machine(), "/peripheral");
69 find_sysbus_device(container, &find);
70 container = container_get(qdev_get_machine(), "/peripheral-anon");
71 find_sysbus_device(container, &find);
75 static void system_bus_class_init(ObjectClass *klass, void *data)
77 BusClass *k = BUS_CLASS(klass);
79 k->print_dev = sysbus_dev_print;
80 k->get_fw_dev_path = sysbus_get_fw_dev_path;
83 static const TypeInfo system_bus_info = {
84 .name = TYPE_SYSTEM_BUS,
85 .parent = TYPE_BUS,
86 .instance_size = sizeof(BusState),
87 .class_init = system_bus_class_init,
90 /* Check whether an IRQ source exists */
91 bool sysbus_has_irq(SysBusDevice *dev, int n)
93 char *prop = g_strdup_printf("%s[%d]", SYSBUS_DEVICE_GPIO_IRQ, n);
94 ObjectProperty *r;
96 r = object_property_find(OBJECT(dev), prop, NULL);
97 g_free(prop);
99 return (r != NULL);
102 bool sysbus_is_irq_connected(SysBusDevice *dev, int n)
104 return !!sysbus_get_connected_irq(dev, n);
107 qemu_irq sysbus_get_connected_irq(SysBusDevice *dev, int n)
109 DeviceState *d = DEVICE(dev);
110 return qdev_get_gpio_out_connector(d, SYSBUS_DEVICE_GPIO_IRQ, n);
113 void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq)
115 SysBusDeviceClass *sbd = SYS_BUS_DEVICE_GET_CLASS(dev);
117 qdev_connect_gpio_out_named(DEVICE(dev), SYSBUS_DEVICE_GPIO_IRQ, n, irq);
119 if (sbd->connect_irq_notifier) {
120 sbd->connect_irq_notifier(dev, irq);
124 /* Check whether an MMIO region exists */
125 bool sysbus_has_mmio(SysBusDevice *dev, unsigned int n)
127 return (n < dev->num_mmio);
130 static void sysbus_mmio_map_common(SysBusDevice *dev, int n, hwaddr addr,
131 bool may_overlap, int priority)
133 assert(n >= 0 && n < dev->num_mmio);
135 if (dev->mmio[n].addr == addr) {
136 /* ??? region already mapped here. */
137 return;
139 if (dev->mmio[n].addr != (hwaddr)-1) {
140 /* Unregister previous mapping. */
141 memory_region_del_subregion(get_system_memory(), dev->mmio[n].memory);
143 dev->mmio[n].addr = addr;
144 if (may_overlap) {
145 memory_region_add_subregion_overlap(get_system_memory(),
146 addr,
147 dev->mmio[n].memory,
148 priority);
150 else {
151 memory_region_add_subregion(get_system_memory(),
152 addr,
153 dev->mmio[n].memory);
157 void sysbus_mmio_unmap(SysBusDevice *dev, int n)
159 assert(n >= 0 && n < dev->num_mmio);
161 if (dev->mmio[n].addr != (hwaddr)-1) {
162 memory_region_del_subregion(get_system_memory(), dev->mmio[n].memory);
163 dev->mmio[n].addr = (hwaddr)-1;
167 void sysbus_mmio_map(SysBusDevice *dev, int n, hwaddr addr)
169 sysbus_mmio_map_common(dev, n, addr, false, 0);
172 void sysbus_mmio_map_overlap(SysBusDevice *dev, int n, hwaddr addr,
173 int priority)
175 sysbus_mmio_map_common(dev, n, addr, true, priority);
178 /* Request an IRQ source. The actual IRQ object may be populated later. */
179 void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p)
181 qdev_init_gpio_out_named(DEVICE(dev), p, SYSBUS_DEVICE_GPIO_IRQ, 1);
184 /* Pass IRQs from a target device. */
185 void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target)
187 qdev_pass_gpios(DEVICE(target), DEVICE(dev), SYSBUS_DEVICE_GPIO_IRQ);
190 void sysbus_init_mmio(SysBusDevice *dev, MemoryRegion *memory)
192 int n;
194 assert(dev->num_mmio < QDEV_MAX_MMIO);
195 n = dev->num_mmio++;
196 dev->mmio[n].addr = -1;
197 dev->mmio[n].memory = memory;
200 MemoryRegion *sysbus_mmio_get_region(SysBusDevice *dev, int n)
202 return dev->mmio[n].memory;
205 void sysbus_init_ioports(SysBusDevice *dev, uint32_t ioport, uint32_t size)
207 uint32_t i;
209 for (i = 0; i < size; i++) {
210 assert(dev->num_pio < QDEV_MAX_PIO);
211 dev->pio[dev->num_pio++] = ioport++;
215 /* The purpose of preserving this empty realize function
216 * is to prevent the parent_realize field of some subclasses
217 * from being set to NULL to break the normal init/realize
218 * of some devices.
220 static void sysbus_realize(DeviceState *dev, Error **errp)
224 DeviceState *sysbus_create_varargs(const char *name,
225 hwaddr addr, ...)
227 DeviceState *dev;
228 SysBusDevice *s;
229 va_list va;
230 qemu_irq irq;
231 int n;
233 dev = qdev_create(NULL, name);
234 s = SYS_BUS_DEVICE(dev);
235 qdev_init_nofail(dev);
236 if (addr != (hwaddr)-1) {
237 sysbus_mmio_map(s, 0, addr);
239 va_start(va, addr);
240 n = 0;
241 while (1) {
242 irq = va_arg(va, qemu_irq);
243 if (!irq) {
244 break;
246 sysbus_connect_irq(s, n, irq);
247 n++;
249 va_end(va);
250 return dev;
253 static void sysbus_dev_print(Monitor *mon, DeviceState *dev, int indent)
255 SysBusDevice *s = SYS_BUS_DEVICE(dev);
256 hwaddr size;
257 int i;
259 for (i = 0; i < s->num_mmio; i++) {
260 size = memory_region_size(s->mmio[i].memory);
261 monitor_printf(mon, "%*smmio " TARGET_FMT_plx "/" TARGET_FMT_plx "\n",
262 indent, "", s->mmio[i].addr, size);
266 static char *sysbus_get_fw_dev_path(DeviceState *dev)
268 SysBusDevice *s = SYS_BUS_DEVICE(dev);
269 SysBusDeviceClass *sbc = SYS_BUS_DEVICE_GET_CLASS(s);
270 char *addr, *fw_dev_path;
272 if (sbc->explicit_ofw_unit_address) {
273 addr = sbc->explicit_ofw_unit_address(s);
274 if (addr) {
275 fw_dev_path = g_strdup_printf("%s@%s", qdev_fw_name(dev), addr);
276 g_free(addr);
277 return fw_dev_path;
280 if (s->num_mmio) {
281 return g_strdup_printf("%s@" TARGET_FMT_plx, qdev_fw_name(dev),
282 s->mmio[0].addr);
284 if (s->num_pio) {
285 return g_strdup_printf("%s@i%04x", qdev_fw_name(dev), s->pio[0]);
287 return g_strdup(qdev_fw_name(dev));
290 void sysbus_add_io(SysBusDevice *dev, hwaddr addr,
291 MemoryRegion *mem)
293 memory_region_add_subregion(get_system_io(), addr, mem);
296 MemoryRegion *sysbus_address_space(SysBusDevice *dev)
298 return get_system_memory();
301 static void sysbus_device_class_init(ObjectClass *klass, void *data)
303 DeviceClass *k = DEVICE_CLASS(klass);
304 k->realize = sysbus_realize;
305 k->bus_type = TYPE_SYSTEM_BUS;
307 * device_add plugs devices into a suitable bus. For "real" buses,
308 * that actually connects the device. For sysbus, the connections
309 * need to be made separately, and device_add can't do that. The
310 * device would be left unconnected, and will probably not work
312 * However, a few machines can handle device_add/-device with
313 * a few specific sysbus devices. In those cases, the device
314 * subclass needs to override it and set user_creatable=true.
316 k->user_creatable = false;
319 static const TypeInfo sysbus_device_type_info = {
320 .name = TYPE_SYS_BUS_DEVICE,
321 .parent = TYPE_DEVICE,
322 .instance_size = sizeof(SysBusDevice),
323 .abstract = true,
324 .class_size = sizeof(SysBusDeviceClass),
325 .class_init = sysbus_device_class_init,
328 /* This is a nasty hack to allow passing a NULL bus to qdev_create. */
329 static BusState *main_system_bus;
331 static void main_system_bus_create(void)
333 /* assign main_system_bus before qbus_create_inplace()
334 * in order to make "if (bus != sysbus_get_default())" work */
335 main_system_bus = g_malloc0(system_bus_info.instance_size);
336 qbus_create_inplace(main_system_bus, system_bus_info.instance_size,
337 TYPE_SYSTEM_BUS, NULL, "main-system-bus");
338 OBJECT(main_system_bus)->free = g_free;
341 BusState *sysbus_get_default(void)
343 if (!main_system_bus) {
344 main_system_bus_create();
346 return main_system_bus;
349 void sysbus_init_child_obj(Object *parent, const char *childname, void *child,
350 size_t childsize, const char *childtype)
352 object_initialize_child(parent, childname, child, childsize, childtype,
353 &error_abort, NULL);
354 qdev_set_parent_bus(DEVICE(child), sysbus_get_default());
357 static void sysbus_register_types(void)
359 type_register_static(&system_bus_info);
360 type_register_static(&sysbus_device_type_info);
363 type_init(sysbus_register_types)