hw/arm/raspi: fix CPRMAN base address
[qemu.git] / hw / isa / isa-bus.c
1 /*
2 * isa bus support for qdev.
3 *
4 * Copyright (c) 2009 Gerd Hoffmann <kraxel@redhat.com>
5 *
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.
10 *
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.
15 *
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/>.
18 */
19
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
29 static ISABus *isabus;
30
31 static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent);
32 static char *isabus_get_fw_dev_path(DeviceState *dev);
33
34 static 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
42 static const TypeInfo isa_dma_info = {
43 .name = TYPE_ISADMA,
44 .parent = TYPE_INTERFACE,
45 .class_size = sizeof(IsaDmaClass),
46 };
47
48 static 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
55 ISABus *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_create(TYPE_ISA_BUS, dev, NULL));
68 isabus->address_space = address_space;
69 isabus->address_space_io = address_space_io;
70 return isabus;
71 }
72
73 void isa_bus_irqs(ISABus *bus, qemu_irq *irqs)
74 {
75 bus->irqs = irqs;
76 }
77
78 /*
79 * isa_get_irq() returns the corresponding qemu_irq entry for the i8259.
80 *
81 * This function is only for special cases such as the 'ferr', and
82 * temporary use for normal devices until they are converted to qdev.
83 */
84 qemu_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
91 void 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
100 void 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
107 void 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
115 IsaDma *isa_get_dma(ISABus *bus, int nchan)
116 {
117 assert(bus);
118 return bus->dma[nchan > 3 ? 1 : 0];
119 }
120
121 static 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
128 void 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
134 void 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 /* START is how we should treat DEV, regardless of the actual
142 contents of the portio array. This is how the old code
143 actually handled e.g. the FDC device. */
144 isa_init_ioport(dev, start);
145
146 portio_list_init(piolist, OBJECT(dev), pio_start, opaque, name);
147 portio_list_add(piolist, isabus->address_space_io, start);
148 }
149
150 static void isa_device_init(Object *obj)
151 {
152 ISADevice *dev = ISA_DEVICE(obj);
153
154 dev->isairq[0] = -1;
155 dev->isairq[1] = -1;
156 }
157
158 ISADevice *isa_new(const char *name)
159 {
160 return ISA_DEVICE(qdev_new(name));
161 }
162
163 ISADevice *isa_try_new(const char *name)
164 {
165 return ISA_DEVICE(qdev_try_new(name));
166 }
167
168 ISADevice *isa_create_simple(ISABus *bus, const char *name)
169 {
170 ISADevice *dev;
171
172 dev = isa_new(name);
173 isa_realize_and_unref(dev, bus, &error_fatal);
174 return dev;
175 }
176
177 bool isa_realize_and_unref(ISADevice *dev, ISABus *bus, Error **errp)
178 {
179 return qdev_realize_and_unref(&dev->parent_obj, &bus->parent_obj, errp);
180 }
181
182 ISADevice *isa_vga_init(ISABus *bus)
183 {
184 switch (vga_interface_type) {
185 case VGA_CIRRUS:
186 return isa_create_simple(bus, "isa-cirrus-vga");
187 case VGA_QXL:
188 error_report("%s: qxl: no PCI bus", __func__);
189 return NULL;
190 case VGA_STD:
191 return isa_create_simple(bus, "isa-vga");
192 case VGA_VMWARE:
193 error_report("%s: vmware_vga: no PCI bus", __func__);
194 return NULL;
195 case VGA_VIRTIO:
196 error_report("%s: virtio-vga: no PCI bus", __func__);
197 return NULL;
198 case VGA_NONE:
199 default:
200 return NULL;
201 }
202 }
203
204 void isa_build_aml(ISABus *bus, Aml *scope)
205 {
206 BusChild *kid;
207 ISADevice *dev;
208 ISADeviceClass *dc;
209
210 QTAILQ_FOREACH(kid, &bus->parent_obj.children, sibling) {
211 dev = ISA_DEVICE(kid->child);
212 dc = ISA_DEVICE_GET_CLASS(dev);
213 if (dc->build_aml) {
214 dc->build_aml(dev, scope);
215 }
216 }
217 }
218
219 static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent)
220 {
221 ISADevice *d = ISA_DEVICE(dev);
222
223 if (d->isairq[1] != -1) {
224 monitor_printf(mon, "%*sisa irqs %d,%d\n", indent, "",
225 d->isairq[0], d->isairq[1]);
226 } else if (d->isairq[0] != -1) {
227 monitor_printf(mon, "%*sisa irq %d\n", indent, "",
228 d->isairq[0]);
229 }
230 }
231
232 static void isabus_bridge_class_init(ObjectClass *klass, void *data)
233 {
234 DeviceClass *dc = DEVICE_CLASS(klass);
235
236 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
237 dc->fw_name = "isa";
238 }
239
240 static const TypeInfo isabus_bridge_info = {
241 .name = "isabus-bridge",
242 .parent = TYPE_SYS_BUS_DEVICE,
243 .instance_size = sizeof(SysBusDevice),
244 .class_init = isabus_bridge_class_init,
245 };
246
247 static void isa_device_class_init(ObjectClass *klass, void *data)
248 {
249 DeviceClass *k = DEVICE_CLASS(klass);
250 k->bus_type = TYPE_ISA_BUS;
251 }
252
253 static const TypeInfo isa_device_type_info = {
254 .name = TYPE_ISA_DEVICE,
255 .parent = TYPE_DEVICE,
256 .instance_size = sizeof(ISADevice),
257 .instance_init = isa_device_init,
258 .abstract = true,
259 .class_size = sizeof(ISADeviceClass),
260 .class_init = isa_device_class_init,
261 };
262
263 static void isabus_register_types(void)
264 {
265 type_register_static(&isa_dma_info);
266 type_register_static(&isa_bus_info);
267 type_register_static(&isabus_bridge_info);
268 type_register_static(&isa_device_type_info);
269 }
270
271 static char *isabus_get_fw_dev_path(DeviceState *dev)
272 {
273 ISADevice *d = ISA_DEVICE(dev);
274 char path[40];
275 int off;
276
277 off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev));
278 if (d->ioport_id) {
279 snprintf(path + off, sizeof(path) - off, "@%04x", d->ioport_id);
280 }
281
282 return g_strdup(path);
283 }
284
285 MemoryRegion *isa_address_space(ISADevice *dev)
286 {
287 if (dev) {
288 return isa_bus_from_device(dev)->address_space;
289 }
290
291 return isabus->address_space;
292 }
293
294 MemoryRegion *isa_address_space_io(ISADevice *dev)
295 {
296 if (dev) {
297 return isa_bus_from_device(dev)->address_space_io;
298 }
299
300 return isabus->address_space_io;
301 }
302
303 type_init(isabus_register_types)