Replace all setjmp()/longjmp() with sigsetjmp()/siglongjmp()
[qemu/pbrook.git] / hw / isa-bus.c
blob6dc34f09f3b3e72984794011a531a7ef1644c2cc
1 /*
2 * isa bus support for qdev.
4 * Copyright (c) 2009 Gerd Hoffmann <kraxel@redhat.com>
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/>.
19 #include "hw.h"
20 #include "monitor/monitor.h"
21 #include "sysbus.h"
22 #include "sysemu/sysemu.h"
23 #include "isa.h"
24 #include "exec/address-spaces.h"
26 static ISABus *isabus;
27 hwaddr isa_mem_base = 0;
29 static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent);
30 static char *isabus_get_fw_dev_path(DeviceState *dev);
32 static void isa_bus_class_init(ObjectClass *klass, void *data)
34 BusClass *k = BUS_CLASS(klass);
36 k->print_dev = isabus_dev_print;
37 k->get_fw_dev_path = isabus_get_fw_dev_path;
40 static const TypeInfo isa_bus_info = {
41 .name = TYPE_ISA_BUS,
42 .parent = TYPE_BUS,
43 .instance_size = sizeof(ISABus),
44 .class_init = isa_bus_class_init,
47 ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space_io)
49 if (isabus) {
50 fprintf(stderr, "Can't create a second ISA bus\n");
51 return NULL;
53 if (NULL == dev) {
54 dev = qdev_create(NULL, "isabus-bridge");
55 qdev_init_nofail(dev);
58 isabus = FROM_QBUS(ISABus, qbus_create(TYPE_ISA_BUS, dev, NULL));
59 isabus->address_space_io = address_space_io;
60 return isabus;
63 void isa_bus_irqs(ISABus *bus, qemu_irq *irqs)
65 if (!bus) {
66 hw_error("Can't set isa irqs with no isa bus present.");
68 bus->irqs = irqs;
72 * isa_get_irq() returns the corresponding qemu_irq entry for the i8259.
74 * This function is only for special cases such as the 'ferr', and
75 * temporary use for normal devices until they are converted to qdev.
77 qemu_irq isa_get_irq(ISADevice *dev, int isairq)
79 assert(!dev || DO_UPCAST(ISABus, qbus, dev->qdev.parent_bus) == isabus);
80 if (isairq < 0 || isairq > 15) {
81 hw_error("isa irq %d invalid", isairq);
83 return isabus->irqs[isairq];
86 void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq)
88 assert(dev->nirqs < ARRAY_SIZE(dev->isairq));
89 dev->isairq[dev->nirqs] = isairq;
90 *p = isa_get_irq(dev, isairq);
91 dev->nirqs++;
94 static inline void isa_init_ioport(ISADevice *dev, uint16_t ioport)
96 if (dev && (dev->ioport_id == 0 || ioport < dev->ioport_id)) {
97 dev->ioport_id = ioport;
101 void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start)
103 memory_region_add_subregion(isabus->address_space_io, start, io);
104 isa_init_ioport(dev, start);
107 void isa_register_portio_list(ISADevice *dev, uint16_t start,
108 const MemoryRegionPortio *pio_start,
109 void *opaque, const char *name)
111 PortioList *piolist = g_new(PortioList, 1);
113 /* START is how we should treat DEV, regardless of the actual
114 contents of the portio array. This is how the old code
115 actually handled e.g. the FDC device. */
116 isa_init_ioport(dev, start);
118 portio_list_init(piolist, pio_start, opaque, name);
119 portio_list_add(piolist, isabus->address_space_io, start);
122 static int isa_qdev_init(DeviceState *qdev)
124 ISADevice *dev = ISA_DEVICE(qdev);
125 ISADeviceClass *klass = ISA_DEVICE_GET_CLASS(dev);
127 if (klass->init) {
128 return klass->init(dev);
131 return 0;
134 static void isa_device_init(Object *obj)
136 ISADevice *dev = ISA_DEVICE(obj);
138 dev->isairq[0] = -1;
139 dev->isairq[1] = -1;
142 ISADevice *isa_create(ISABus *bus, const char *name)
144 DeviceState *dev;
146 if (!bus) {
147 hw_error("Tried to create isa device %s with no isa bus present.",
148 name);
150 dev = qdev_create(&bus->qbus, name);
151 return ISA_DEVICE(dev);
154 ISADevice *isa_try_create(ISABus *bus, const char *name)
156 DeviceState *dev;
158 if (!bus) {
159 hw_error("Tried to create isa device %s with no isa bus present.",
160 name);
162 dev = qdev_try_create(&bus->qbus, name);
163 return ISA_DEVICE(dev);
166 ISADevice *isa_create_simple(ISABus *bus, const char *name)
168 ISADevice *dev;
170 dev = isa_create(bus, name);
171 qdev_init_nofail(&dev->qdev);
172 return dev;
175 ISADevice *isa_vga_init(ISABus *bus)
177 switch (vga_interface_type) {
178 case VGA_CIRRUS:
179 return isa_create_simple(bus, "isa-cirrus-vga");
180 case VGA_QXL:
181 fprintf(stderr, "%s: qxl: no PCI bus\n", __func__);
182 return NULL;
183 case VGA_STD:
184 return isa_create_simple(bus, "isa-vga");
185 case VGA_VMWARE:
186 fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __func__);
187 return NULL;
188 case VGA_NONE:
189 default:
190 return NULL;
194 static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent)
196 ISADevice *d = ISA_DEVICE(dev);
198 if (d->isairq[1] != -1) {
199 monitor_printf(mon, "%*sisa irqs %d,%d\n", indent, "",
200 d->isairq[0], d->isairq[1]);
201 } else if (d->isairq[0] != -1) {
202 monitor_printf(mon, "%*sisa irq %d\n", indent, "",
203 d->isairq[0]);
207 static int isabus_bridge_init(SysBusDevice *dev)
209 /* nothing */
210 return 0;
213 static void isabus_bridge_class_init(ObjectClass *klass, void *data)
215 DeviceClass *dc = DEVICE_CLASS(klass);
216 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
218 k->init = isabus_bridge_init;
219 dc->fw_name = "isa";
220 dc->no_user = 1;
223 static const TypeInfo isabus_bridge_info = {
224 .name = "isabus-bridge",
225 .parent = TYPE_SYS_BUS_DEVICE,
226 .instance_size = sizeof(SysBusDevice),
227 .class_init = isabus_bridge_class_init,
230 static void isa_device_class_init(ObjectClass *klass, void *data)
232 DeviceClass *k = DEVICE_CLASS(klass);
233 k->init = isa_qdev_init;
234 k->bus_type = TYPE_ISA_BUS;
237 static const TypeInfo isa_device_type_info = {
238 .name = TYPE_ISA_DEVICE,
239 .parent = TYPE_DEVICE,
240 .instance_size = sizeof(ISADevice),
241 .instance_init = isa_device_init,
242 .abstract = true,
243 .class_size = sizeof(ISADeviceClass),
244 .class_init = isa_device_class_init,
247 static void isabus_register_types(void)
249 type_register_static(&isa_bus_info);
250 type_register_static(&isabus_bridge_info);
251 type_register_static(&isa_device_type_info);
254 static char *isabus_get_fw_dev_path(DeviceState *dev)
256 ISADevice *d = (ISADevice*)dev;
257 char path[40];
258 int off;
260 off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev));
261 if (d->ioport_id) {
262 snprintf(path + off, sizeof(path) - off, "@%04x", d->ioport_id);
265 return g_strdup(path);
268 MemoryRegion *isa_address_space(ISADevice *dev)
270 return get_system_memory();
273 MemoryRegion *isa_address_space_io(ISADevice *dev)
275 if (dev) {
276 return isa_bus_from_device(dev)->address_space_io;
279 return isabus->address_space_io;
282 type_init(isabus_register_types)