2 * isa bus support for qdev.
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 "monitor/monitor.h"
21 #include "hw/sysbus.h"
22 #include "sysemu/sysemu.h"
23 #include "hw/isa/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 = {
43 .instance_size = sizeof(ISABus),
44 .class_init = isa_bus_class_init,
47 ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space_io)
50 fprintf(stderr, "Can't create a second ISA bus\n");
54 dev = qdev_create(NULL, "isabus-bridge");
55 qdev_init_nofail(dev);
58 isabus = ISA_BUS(qbus_create(TYPE_ISA_BUS, dev, NULL));
59 isabus->address_space_io = address_space_io;
63 void isa_bus_irqs(ISABus *bus, qemu_irq *irqs)
66 hw_error("Can't set isa irqs with no isa bus present.");
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 || ISA_BUS(qdev_get_parent_bus(DEVICE(dev))) == 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);
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, OBJECT(dev), pio_start, opaque, name);
119 portio_list_add(piolist, isabus->address_space_io, start);
122 static void isa_device_init(Object *obj)
124 ISADevice *dev = ISA_DEVICE(obj);
130 ISADevice *isa_create(ISABus *bus, const char *name)
135 hw_error("Tried to create isa device %s with no isa bus present.",
138 dev = qdev_create(BUS(bus), name);
139 return ISA_DEVICE(dev);
142 ISADevice *isa_try_create(ISABus *bus, const char *name)
147 hw_error("Tried to create isa device %s with no isa bus present.",
150 dev = qdev_try_create(BUS(bus), name);
151 return ISA_DEVICE(dev);
154 ISADevice *isa_create_simple(ISABus *bus, const char *name)
158 dev = isa_create(bus, name);
159 qdev_init_nofail(DEVICE(dev));
163 ISADevice *isa_vga_init(ISABus *bus)
165 switch (vga_interface_type) {
167 return isa_create_simple(bus, "isa-cirrus-vga");
169 fprintf(stderr, "%s: qxl: no PCI bus\n", __func__);
172 return isa_create_simple(bus, "isa-vga");
174 fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __func__);
182 static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent)
184 ISADevice *d = ISA_DEVICE(dev);
186 if (d->isairq[1] != -1) {
187 monitor_printf(mon, "%*sisa irqs %d,%d\n", indent, "",
188 d->isairq[0], d->isairq[1]);
189 } else if (d->isairq[0] != -1) {
190 monitor_printf(mon, "%*sisa irq %d\n", indent, "",
195 static void isabus_bridge_class_init(ObjectClass *klass, void *data)
197 DeviceClass *dc = DEVICE_CLASS(klass);
203 static const TypeInfo isabus_bridge_info = {
204 .name = "isabus-bridge",
205 .parent = TYPE_SYS_BUS_DEVICE,
206 .instance_size = sizeof(SysBusDevice),
207 .class_init = isabus_bridge_class_init,
210 static void isa_device_class_init(ObjectClass *klass, void *data)
212 DeviceClass *k = DEVICE_CLASS(klass);
213 k->bus_type = TYPE_ISA_BUS;
216 static const TypeInfo isa_device_type_info = {
217 .name = TYPE_ISA_DEVICE,
218 .parent = TYPE_DEVICE,
219 .instance_size = sizeof(ISADevice),
220 .instance_init = isa_device_init,
222 .class_size = sizeof(ISADeviceClass),
223 .class_init = isa_device_class_init,
226 static void isabus_register_types(void)
228 type_register_static(&isa_bus_info);
229 type_register_static(&isabus_bridge_info);
230 type_register_static(&isa_device_type_info);
233 static char *isabus_get_fw_dev_path(DeviceState *dev)
235 ISADevice *d = ISA_DEVICE(dev);
239 off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev));
241 snprintf(path + off, sizeof(path) - off, "@%04x", d->ioport_id);
244 return g_strdup(path);
247 MemoryRegion *isa_address_space(ISADevice *dev)
249 return get_system_memory();
252 MemoryRegion *isa_address_space_io(ISADevice *dev)
255 return isa_bus_from_device(dev)->address_space_io;
258 return isabus->address_space_io;
261 type_init(isabus_register_types)