qemu/hw/isa-bus.c
Anthony Liguori 0d936928ef qdev: Convert busses to QEMU Object Model
This is far less interesting than it sounds.  We simply add an Object to each
BusState and then register the types appropriately.  Most of the interesting
refactoring will follow in the next patches.

Since we're changing fundamental type names (BusInfo -> BusClass), it all needs
to convert at once.  Fortunately, not a lot of code is affected.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[AF: Made all new bus TypeInfos static const.]
[AF: Made qbus_free() call object_delete(), required {qom,glib}_allocated]
Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-06-18 15:14:38 +02:00

248 lines
6.5 KiB
C

/*
* isa bus support for qdev.
*
* Copyright (c) 2009 Gerd Hoffmann <kraxel@redhat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "hw.h"
#include "monitor.h"
#include "sysbus.h"
#include "isa.h"
#include "exec-memory.h"
static ISABus *isabus;
target_phys_addr_t isa_mem_base = 0;
static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent);
static char *isabus_get_fw_dev_path(DeviceState *dev);
static void isa_bus_class_init(ObjectClass *klass, void *data)
{
BusClass *k = BUS_CLASS(klass);
k->print_dev = isabus_dev_print;
k->get_fw_dev_path = isabus_get_fw_dev_path;
}
static const TypeInfo isa_bus_info = {
.name = TYPE_ISA_BUS,
.parent = TYPE_BUS,
.instance_size = sizeof(ISABus),
.class_init = isa_bus_class_init,
};
ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space_io)
{
if (isabus) {
fprintf(stderr, "Can't create a second ISA bus\n");
return NULL;
}
if (NULL == dev) {
dev = qdev_create(NULL, "isabus-bridge");
qdev_init_nofail(dev);
}
isabus = FROM_QBUS(ISABus, qbus_create(TYPE_ISA_BUS, dev, NULL));
isabus->address_space_io = address_space_io;
return isabus;
}
void isa_bus_irqs(ISABus *bus, qemu_irq *irqs)
{
if (!bus) {
hw_error("Can't set isa irqs with no isa bus present.");
}
bus->irqs = irqs;
}
/*
* isa_get_irq() returns the corresponding qemu_irq entry for the i8259.
*
* This function is only for special cases such as the 'ferr', and
* temporary use for normal devices until they are converted to qdev.
*/
qemu_irq isa_get_irq(ISADevice *dev, int isairq)
{
assert(!dev || DO_UPCAST(ISABus, qbus, dev->qdev.parent_bus) == isabus);
if (isairq < 0 || isairq > 15) {
hw_error("isa irq %d invalid", isairq);
}
return isabus->irqs[isairq];
}
void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq)
{
assert(dev->nirqs < ARRAY_SIZE(dev->isairq));
dev->isairq[dev->nirqs] = isairq;
*p = isa_get_irq(dev, isairq);
dev->nirqs++;
}
static inline void isa_init_ioport(ISADevice *dev, uint16_t ioport)
{
if (dev && (dev->ioport_id == 0 || ioport < dev->ioport_id)) {
dev->ioport_id = ioport;
}
}
void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start)
{
memory_region_add_subregion(isabus->address_space_io, start, io);
isa_init_ioport(dev, start);
}
void isa_register_portio_list(ISADevice *dev, uint16_t start,
const MemoryRegionPortio *pio_start,
void *opaque, const char *name)
{
PortioList *piolist = g_new(PortioList, 1);
/* START is how we should treat DEV, regardless of the actual
contents of the portio array. This is how the old code
actually handled e.g. the FDC device. */
isa_init_ioport(dev, start);
portio_list_init(piolist, pio_start, opaque, name);
portio_list_add(piolist, isabus->address_space_io, start);
}
static int isa_qdev_init(DeviceState *qdev)
{
ISADevice *dev = ISA_DEVICE(qdev);
ISADeviceClass *klass = ISA_DEVICE_GET_CLASS(dev);
dev->isairq[0] = -1;
dev->isairq[1] = -1;
if (klass->init) {
return klass->init(dev);
}
return 0;
}
ISADevice *isa_create(ISABus *bus, const char *name)
{
DeviceState *dev;
if (!bus) {
hw_error("Tried to create isa device %s with no isa bus present.",
name);
}
dev = qdev_create(&bus->qbus, name);
return ISA_DEVICE(dev);
}
ISADevice *isa_try_create(ISABus *bus, const char *name)
{
DeviceState *dev;
if (!bus) {
hw_error("Tried to create isa device %s with no isa bus present.",
name);
}
dev = qdev_try_create(&bus->qbus, name);
return ISA_DEVICE(dev);
}
ISADevice *isa_create_simple(ISABus *bus, const char *name)
{
ISADevice *dev;
dev = isa_create(bus, name);
qdev_init_nofail(&dev->qdev);
return dev;
}
static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent)
{
ISADevice *d = ISA_DEVICE(dev);
if (d->isairq[1] != -1) {
monitor_printf(mon, "%*sisa irqs %d,%d\n", indent, "",
d->isairq[0], d->isairq[1]);
} else if (d->isairq[0] != -1) {
monitor_printf(mon, "%*sisa irq %d\n", indent, "",
d->isairq[0]);
}
}
static int isabus_bridge_init(SysBusDevice *dev)
{
/* nothing */
return 0;
}
static void isabus_bridge_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
k->init = isabus_bridge_init;
dc->fw_name = "isa";
dc->no_user = 1;
}
static TypeInfo isabus_bridge_info = {
.name = "isabus-bridge",
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(SysBusDevice),
.class_init = isabus_bridge_class_init,
};
static void isa_device_class_init(ObjectClass *klass, void *data)
{
DeviceClass *k = DEVICE_CLASS(klass);
k->init = isa_qdev_init;
k->bus_type = TYPE_ISA_BUS;
}
static TypeInfo isa_device_type_info = {
.name = TYPE_ISA_DEVICE,
.parent = TYPE_DEVICE,
.instance_size = sizeof(ISADevice),
.abstract = true,
.class_size = sizeof(ISADeviceClass),
.class_init = isa_device_class_init,
};
static void isabus_register_types(void)
{
type_register_static(&isa_bus_info);
type_register_static(&isabus_bridge_info);
type_register_static(&isa_device_type_info);
}
static char *isabus_get_fw_dev_path(DeviceState *dev)
{
ISADevice *d = (ISADevice*)dev;
char path[40];
int off;
off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev));
if (d->ioport_id) {
snprintf(path + off, sizeof(path) - off, "@%04x", d->ioport_id);
}
return strdup(path);
}
MemoryRegion *isa_address_space(ISADevice *dev)
{
return get_system_memory();
}
type_init(isabus_register_types)