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/>.
20 #include "qemu/osdep.h"
21 #include "qemu/error-report.h"
22 #include "qemu/module.h"
23 #include "qapi/error.h"
25 #include "monitor/monitor.h"
26 #include "hw/sysbus.h"
27 #include "sysemu/sysemu.h"
28 #include "hw/isa/isa.h"
30 static ISABus
*isabus
;
32 static void isabus_dev_print(Monitor
*mon
, DeviceState
*dev
, int indent
);
33 static char *isabus_get_fw_dev_path(DeviceState
*dev
);
35 static void isa_bus_class_init(ObjectClass
*klass
, void *data
)
37 BusClass
*k
= BUS_CLASS(klass
);
39 k
->print_dev
= isabus_dev_print
;
40 k
->get_fw_dev_path
= isabus_get_fw_dev_path
;
43 static const TypeInfo isa_dma_info
= {
45 .parent
= TYPE_INTERFACE
,
46 .class_size
= sizeof(IsaDmaClass
),
49 static const TypeInfo isa_bus_info
= {
52 .instance_size
= sizeof(ISABus
),
53 .class_init
= isa_bus_class_init
,
56 ISABus
*isa_bus_new(DeviceState
*dev
, MemoryRegion
* address_space
,
57 MemoryRegion
*address_space_io
, Error
**errp
)
60 error_setg(errp
, "Can't create a second ISA bus");
64 dev
= qdev_create(NULL
, "isabus-bridge");
65 qdev_init_nofail(dev
);
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
;
74 void isa_bus_irqs(ISABus
*bus
, qemu_irq
*irqs
)
80 * isa_get_irq() returns the corresponding qemu_irq entry for the i8259.
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.
85 qemu_irq
isa_get_irq(ISADevice
*dev
, int isairq
)
87 assert(!dev
|| ISA_BUS(qdev_get_parent_bus(DEVICE(dev
))) == isabus
);
88 if (isairq
< 0 || isairq
> 15) {
89 hw_error("isa irq %d invalid", isairq
);
91 return isabus
->irqs
[isairq
];
94 void isa_init_irq(ISADevice
*dev
, qemu_irq
*p
, int isairq
)
96 assert(dev
->nirqs
< ARRAY_SIZE(dev
->isairq
));
97 dev
->isairq
[dev
->nirqs
] = isairq
;
98 *p
= isa_get_irq(dev
, isairq
);
102 void isa_connect_gpio_out(ISADevice
*isadev
, int gpioirq
, int isairq
)
105 isa_init_irq(isadev
, &irq
, isairq
);
106 qdev_connect_gpio_out(DEVICE(isadev
), gpioirq
, irq
);
109 void isa_bus_dma(ISABus
*bus
, IsaDma
*dma8
, IsaDma
*dma16
)
111 assert(bus
&& dma8
&& dma16
);
112 assert(!bus
->dma
[0] && !bus
->dma
[1]);
117 IsaDma
*isa_get_dma(ISABus
*bus
, int nchan
)
120 return bus
->dma
[nchan
> 3 ? 1 : 0];
123 static inline void isa_init_ioport(ISADevice
*dev
, uint16_t ioport
)
125 if (dev
&& (dev
->ioport_id
== 0 || ioport
< dev
->ioport_id
)) {
126 dev
->ioport_id
= ioport
;
130 void isa_register_ioport(ISADevice
*dev
, MemoryRegion
*io
, uint16_t start
)
132 memory_region_add_subregion(isabus
->address_space_io
, start
, io
);
133 isa_init_ioport(dev
, start
);
136 void isa_register_portio_list(ISADevice
*dev
,
137 PortioList
*piolist
, uint16_t start
,
138 const MemoryRegionPortio
*pio_start
,
139 void *opaque
, const char *name
)
141 assert(piolist
&& !piolist
->owner
);
143 /* START is how we should treat DEV, regardless of the actual
144 contents of the portio array. This is how the old code
145 actually handled e.g. the FDC device. */
146 isa_init_ioport(dev
, start
);
148 portio_list_init(piolist
, OBJECT(dev
), pio_start
, opaque
, name
);
149 portio_list_add(piolist
, isabus
->address_space_io
, start
);
152 static void isa_device_init(Object
*obj
)
154 ISADevice
*dev
= ISA_DEVICE(obj
);
160 ISADevice
*isa_create(ISABus
*bus
, const char *name
)
164 dev
= qdev_create(BUS(bus
), name
);
165 return ISA_DEVICE(dev
);
168 ISADevice
*isa_try_create(ISABus
*bus
, const char *name
)
172 dev
= qdev_try_create(BUS(bus
), name
);
173 return ISA_DEVICE(dev
);
176 ISADevice
*isa_create_simple(ISABus
*bus
, const char *name
)
180 dev
= isa_create(bus
, name
);
181 qdev_init_nofail(DEVICE(dev
));
185 ISADevice
*isa_vga_init(ISABus
*bus
)
187 switch (vga_interface_type
) {
189 return isa_create_simple(bus
, "isa-cirrus-vga");
191 error_report("%s: qxl: no PCI bus", __func__
);
194 return isa_create_simple(bus
, "isa-vga");
196 error_report("%s: vmware_vga: no PCI bus", __func__
);
199 error_report("%s: virtio-vga: no PCI bus", __func__
);
207 static void isabus_dev_print(Monitor
*mon
, DeviceState
*dev
, int indent
)
209 ISADevice
*d
= ISA_DEVICE(dev
);
211 if (d
->isairq
[1] != -1) {
212 monitor_printf(mon
, "%*sisa irqs %d,%d\n", indent
, "",
213 d
->isairq
[0], d
->isairq
[1]);
214 } else if (d
->isairq
[0] != -1) {
215 monitor_printf(mon
, "%*sisa irq %d\n", indent
, "",
220 static void isabus_bridge_class_init(ObjectClass
*klass
, void *data
)
222 DeviceClass
*dc
= DEVICE_CLASS(klass
);
224 set_bit(DEVICE_CATEGORY_BRIDGE
, dc
->categories
);
228 static const TypeInfo isabus_bridge_info
= {
229 .name
= "isabus-bridge",
230 .parent
= TYPE_SYS_BUS_DEVICE
,
231 .instance_size
= sizeof(SysBusDevice
),
232 .class_init
= isabus_bridge_class_init
,
235 static void isa_device_class_init(ObjectClass
*klass
, void *data
)
237 DeviceClass
*k
= DEVICE_CLASS(klass
);
238 k
->bus_type
= TYPE_ISA_BUS
;
241 static const TypeInfo isa_device_type_info
= {
242 .name
= TYPE_ISA_DEVICE
,
243 .parent
= TYPE_DEVICE
,
244 .instance_size
= sizeof(ISADevice
),
245 .instance_init
= isa_device_init
,
247 .class_size
= sizeof(ISADeviceClass
),
248 .class_init
= isa_device_class_init
,
251 static void isabus_register_types(void)
253 type_register_static(&isa_dma_info
);
254 type_register_static(&isa_bus_info
);
255 type_register_static(&isabus_bridge_info
);
256 type_register_static(&isa_device_type_info
);
259 static char *isabus_get_fw_dev_path(DeviceState
*dev
)
261 ISADevice
*d
= ISA_DEVICE(dev
);
265 off
= snprintf(path
, sizeof(path
), "%s", qdev_fw_name(dev
));
267 snprintf(path
+ off
, sizeof(path
) - off
, "@%04x", d
->ioport_id
);
270 return g_strdup(path
);
273 MemoryRegion
*isa_address_space(ISADevice
*dev
)
276 return isa_bus_from_device(dev
)->address_space
;
279 return isabus
->address_space
;
282 MemoryRegion
*isa_address_space_io(ISADevice
*dev
)
285 return isa_bus_from_device(dev
)->address_space_io
;
288 return isabus
->address_space_io
;
291 type_init(isabus_register_types
)