target/ppc: Fix slbia TLB invalidation gap
[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 "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
30 static ISABus *isabus;
31
32 static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent);
33 static char *isabus_get_fw_dev_path(DeviceState *dev);
34
35 static 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
43 static const TypeInfo isa_dma_info = {
44 .name = TYPE_ISADMA,
45 .parent = TYPE_INTERFACE,
46 .class_size = sizeof(IsaDmaClass),
47 };
48
49 static 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
56 ISABus *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
74 void isa_bus_irqs(ISABus *bus, qemu_irq *irqs)
75 {
76 bus->irqs = irqs;
77 }
78
79 /*
80 * isa_get_irq() returns the corresponding qemu_irq entry for the i8259.
81 *
82 * This function is only for special cases such as the 'ferr', and
83 * temporary use for normal devices until they are converted to qdev.
84 */
85 qemu_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
94 void 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
105 void 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
112 void 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
120 IsaDma *isa_get_dma(ISABus *bus, int nchan)
121 {
122 assert(bus);
123 return bus->dma[nchan > 3 ? 1 : 0];
124 }
125
126 static 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
133 void 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
139 void 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 /* START is how we should treat DEV, regardless of the actual
147 contents of the portio array. This is how the old code
148 actually handled e.g. the FDC device. */
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
155 static 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
163 ISADevice *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
171 ISADevice *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
179 ISADevice *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
188 ISADevice *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
210 static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent)
211 {
212 ISADevice *d = ISA_DEVICE(dev);
213
214 if (d->isairq[1] != -1) {
215 monitor_printf(mon, "%*sisa irqs %d,%d\n", indent, "",
216 d->isairq[0], d->isairq[1]);
217 } else if (d->isairq[0] != -1) {
218 monitor_printf(mon, "%*sisa irq %d\n", indent, "",
219 d->isairq[0]);
220 }
221 }
222
223 static void isabus_bridge_class_init(ObjectClass *klass, void *data)
224 {
225 DeviceClass *dc = DEVICE_CLASS(klass);
226
227 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
228 dc->fw_name = "isa";
229 }
230
231 static const TypeInfo isabus_bridge_info = {
232 .name = "isabus-bridge",
233 .parent = TYPE_SYS_BUS_DEVICE,
234 .instance_size = sizeof(SysBusDevice),
235 .class_init = isabus_bridge_class_init,
236 };
237
238 static void isa_device_class_init(ObjectClass *klass, void *data)
239 {
240 DeviceClass *k = DEVICE_CLASS(klass);
241 k->bus_type = TYPE_ISA_BUS;
242 }
243
244 static const TypeInfo isa_device_type_info = {
245 .name = TYPE_ISA_DEVICE,
246 .parent = TYPE_DEVICE,
247 .instance_size = sizeof(ISADevice),
248 .instance_init = isa_device_init,
249 .abstract = true,
250 .class_size = sizeof(ISADeviceClass),
251 .class_init = isa_device_class_init,
252 };
253
254 static void isabus_register_types(void)
255 {
256 type_register_static(&isa_dma_info);
257 type_register_static(&isa_bus_info);
258 type_register_static(&isabus_bridge_info);
259 type_register_static(&isa_device_type_info);
260 }
261
262 static char *isabus_get_fw_dev_path(DeviceState *dev)
263 {
264 ISADevice *d = ISA_DEVICE(dev);
265 char path[40];
266 int off;
267
268 off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev));
269 if (d->ioport_id) {
270 snprintf(path + off, sizeof(path) - off, "@%04x", d->ioport_id);
271 }
272
273 return g_strdup(path);
274 }
275
276 MemoryRegion *isa_address_space(ISADevice *dev)
277 {
278 if (dev) {
279 return isa_bus_from_device(dev)->address_space;
280 }
281
282 return isabus->address_space;
283 }
284
285 MemoryRegion *isa_address_space_io(ISADevice *dev)
286 {
287 if (dev) {
288 return isa_bus_from_device(dev)->address_space_io;
289 }
290
291 return isabus->address_space_io;
292 }
293
294 type_init(isabus_register_types)