270 lines
7 KiB
C
270 lines
7 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 2.1 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 "qemu/osdep.h"
|
|
#include "qemu/error-report.h"
|
|
#include "qemu/module.h"
|
|
#include "qapi/error.h"
|
|
#include "hw/sysbus.h"
|
|
#include "sysemu/sysemu.h"
|
|
#include "hw/isa/isa.h"
|
|
#include "hw/acpi/acpi_aml_interface.h"
|
|
|
|
static ISABus *isabus;
|
|
|
|
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->get_fw_dev_path = isabus_get_fw_dev_path;
|
|
}
|
|
|
|
static const TypeInfo isa_dma_info = {
|
|
.name = TYPE_ISADMA,
|
|
.parent = TYPE_INTERFACE,
|
|
.class_size = sizeof(IsaDmaClass),
|
|
};
|
|
|
|
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,
|
|
MemoryRegion *address_space_io, Error **errp)
|
|
{
|
|
if (isabus) {
|
|
error_setg(errp, "Can't create a second ISA bus");
|
|
return NULL;
|
|
}
|
|
if (!dev) {
|
|
dev = qdev_new("isabus-bridge");
|
|
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
|
|
}
|
|
|
|
isabus = ISA_BUS(qbus_new(TYPE_ISA_BUS, dev, NULL));
|
|
isabus->address_space = address_space;
|
|
isabus->address_space_io = address_space_io;
|
|
return isabus;
|
|
}
|
|
|
|
void isa_bus_irqs(ISABus *bus, qemu_irq *irqs)
|
|
{
|
|
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, unsigned isairq)
|
|
{
|
|
assert(!dev || ISA_BUS(qdev_get_parent_bus(DEVICE(dev))) == isabus);
|
|
assert(isairq < ISA_NUM_IRQS);
|
|
return isabus->irqs[isairq];
|
|
}
|
|
|
|
void isa_connect_gpio_out(ISADevice *isadev, int gpioirq, unsigned isairq)
|
|
{
|
|
qemu_irq irq = isa_get_irq(isadev, isairq);
|
|
qdev_connect_gpio_out(DEVICE(isadev), gpioirq, irq);
|
|
}
|
|
|
|
void isa_bus_dma(ISABus *bus, IsaDma *dma8, IsaDma *dma16)
|
|
{
|
|
assert(bus && dma8 && dma16);
|
|
assert(!bus->dma[0] && !bus->dma[1]);
|
|
bus->dma[0] = dma8;
|
|
bus->dma[1] = dma16;
|
|
}
|
|
|
|
IsaDma *isa_get_dma(ISABus *bus, int nchan)
|
|
{
|
|
assert(bus);
|
|
return bus->dma[nchan > 3 ? 1 : 0];
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
int isa_register_portio_list(ISADevice *dev,
|
|
PortioList *piolist, uint16_t start,
|
|
const MemoryRegionPortio *pio_start,
|
|
void *opaque, const char *name)
|
|
{
|
|
assert(piolist && !piolist->owner);
|
|
|
|
if (!isabus) {
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* 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, OBJECT(dev), pio_start, opaque, name);
|
|
portio_list_add(piolist, isabus->address_space_io, start);
|
|
|
|
return 0;
|
|
}
|
|
|
|
ISADevice *isa_new(const char *name)
|
|
{
|
|
return ISA_DEVICE(qdev_new(name));
|
|
}
|
|
|
|
ISADevice *isa_try_new(const char *name)
|
|
{
|
|
return ISA_DEVICE(qdev_try_new(name));
|
|
}
|
|
|
|
ISADevice *isa_create_simple(ISABus *bus, const char *name)
|
|
{
|
|
ISADevice *dev;
|
|
|
|
dev = isa_new(name);
|
|
isa_realize_and_unref(dev, bus, &error_fatal);
|
|
return dev;
|
|
}
|
|
|
|
bool isa_realize_and_unref(ISADevice *dev, ISABus *bus, Error **errp)
|
|
{
|
|
return qdev_realize_and_unref(&dev->parent_obj, &bus->parent_obj, errp);
|
|
}
|
|
|
|
ISADevice *isa_vga_init(ISABus *bus)
|
|
{
|
|
vga_interface_created = true;
|
|
switch (vga_interface_type) {
|
|
case VGA_CIRRUS:
|
|
return isa_create_simple(bus, "isa-cirrus-vga");
|
|
case VGA_QXL:
|
|
error_report("%s: qxl: no PCI bus", __func__);
|
|
return NULL;
|
|
case VGA_STD:
|
|
return isa_create_simple(bus, "isa-vga");
|
|
case VGA_VMWARE:
|
|
error_report("%s: vmware_vga: no PCI bus", __func__);
|
|
return NULL;
|
|
case VGA_VIRTIO:
|
|
error_report("%s: virtio-vga: no PCI bus", __func__);
|
|
return NULL;
|
|
case VGA_NONE:
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
void isa_build_aml(ISABus *bus, Aml *scope)
|
|
{
|
|
BusChild *kid;
|
|
|
|
QTAILQ_FOREACH(kid, &bus->parent_obj.children, sibling) {
|
|
call_dev_aml_func(DEVICE(kid->child), scope);
|
|
}
|
|
}
|
|
|
|
static void isabus_bridge_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
|
|
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
|
|
dc->fw_name = "isa";
|
|
}
|
|
|
|
static const 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->bus_type = TYPE_ISA_BUS;
|
|
}
|
|
|
|
static const 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_dma_info);
|
|
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 = ISA_DEVICE(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 g_strdup(path);
|
|
}
|
|
|
|
MemoryRegion *isa_address_space(ISADevice *dev)
|
|
{
|
|
if (dev) {
|
|
return isa_bus_from_device(dev)->address_space;
|
|
}
|
|
|
|
return isabus->address_space;
|
|
}
|
|
|
|
MemoryRegion *isa_address_space_io(ISADevice *dev)
|
|
{
|
|
if (dev) {
|
|
return isa_bus_from_device(dev)->address_space_io;
|
|
}
|
|
|
|
return isabus->address_space_io;
|
|
}
|
|
|
|
type_init(isabus_register_types)
|