Not used yet, but at least we're provided with the correct region. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Avi Kivity <avi@redhat.com>
214 lines
5.3 KiB
C
214 lines
5.3 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"
|
|
|
|
struct ISABus {
|
|
BusState qbus;
|
|
MemoryRegion *address_space_io;
|
|
qemu_irq *irqs;
|
|
};
|
|
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 struct BusInfo isa_bus_info = {
|
|
.name = "ISA",
|
|
.size = sizeof(ISABus),
|
|
.print_dev = isabus_dev_print,
|
|
.get_fw_dev_path = isabus_get_fw_dev_path,
|
|
};
|
|
|
|
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(&isa_bus_info, dev, NULL));
|
|
isabus->address_space_io = address_space_io;
|
|
return isabus;
|
|
}
|
|
|
|
void isa_bus_irqs(qemu_irq *irqs)
|
|
{
|
|
isabus->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(int isairq)
|
|
{
|
|
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(isairq);
|
|
dev->nirqs++;
|
|
}
|
|
|
|
static void isa_init_ioport_one(ISADevice *dev, uint16_t ioport)
|
|
{
|
|
assert(dev->nioports < ARRAY_SIZE(dev->ioports));
|
|
dev->ioports[dev->nioports++] = ioport;
|
|
}
|
|
|
|
static int isa_cmp_ports(const void *p1, const void *p2)
|
|
{
|
|
return *(uint16_t*)p1 - *(uint16_t*)p2;
|
|
}
|
|
|
|
void isa_init_ioport_range(ISADevice *dev, uint16_t start, uint16_t length)
|
|
{
|
|
int i;
|
|
for (i = start; i < start + length; i++) {
|
|
isa_init_ioport_one(dev, i);
|
|
}
|
|
qsort(dev->ioports, dev->nioports, sizeof(dev->ioports[0]), isa_cmp_ports);
|
|
}
|
|
|
|
void isa_init_ioport(ISADevice *dev, uint16_t ioport)
|
|
{
|
|
isa_init_ioport_range(dev, ioport, 1);
|
|
}
|
|
|
|
static int isa_qdev_init(DeviceState *qdev, DeviceInfo *base)
|
|
{
|
|
ISADevice *dev = DO_UPCAST(ISADevice, qdev, qdev);
|
|
ISADeviceInfo *info = DO_UPCAST(ISADeviceInfo, qdev, base);
|
|
|
|
dev->isairq[0] = -1;
|
|
dev->isairq[1] = -1;
|
|
|
|
return info->init(dev);
|
|
}
|
|
|
|
void isa_qdev_register(ISADeviceInfo *info)
|
|
{
|
|
info->qdev.init = isa_qdev_init;
|
|
info->qdev.bus_info = &isa_bus_info;
|
|
qdev_register(&info->qdev);
|
|
}
|
|
|
|
ISADevice *isa_create(const char *name)
|
|
{
|
|
DeviceState *dev;
|
|
|
|
if (!isabus) {
|
|
hw_error("Tried to create isa device %s with no isa bus present.",
|
|
name);
|
|
}
|
|
dev = qdev_create(&isabus->qbus, name);
|
|
return DO_UPCAST(ISADevice, qdev, dev);
|
|
}
|
|
|
|
ISADevice *isa_try_create(const char *name)
|
|
{
|
|
DeviceState *dev;
|
|
|
|
if (!isabus) {
|
|
hw_error("Tried to create isa device %s with no isa bus present.",
|
|
name);
|
|
}
|
|
dev = qdev_try_create(&isabus->qbus, name);
|
|
return DO_UPCAST(ISADevice, qdev, dev);
|
|
}
|
|
|
|
ISADevice *isa_create_simple(const char *name)
|
|
{
|
|
ISADevice *dev;
|
|
|
|
dev = isa_create(name);
|
|
qdev_init_nofail(&dev->qdev);
|
|
return dev;
|
|
}
|
|
|
|
static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent)
|
|
{
|
|
ISADevice *d = DO_UPCAST(ISADevice, qdev, 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 SysBusDeviceInfo isabus_bridge_info = {
|
|
.init = isabus_bridge_init,
|
|
.qdev.name = "isabus-bridge",
|
|
.qdev.fw_name = "isa",
|
|
.qdev.size = sizeof(SysBusDevice),
|
|
.qdev.no_user = 1,
|
|
};
|
|
|
|
static void isabus_register_devices(void)
|
|
{
|
|
sysbus_register_withprop(&isabus_bridge_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->nioports) {
|
|
snprintf(path + off, sizeof(path) - off, "@%04x", d->ioports[0]);
|
|
}
|
|
|
|
return strdup(path);
|
|
}
|
|
|
|
MemoryRegion *isa_address_space(ISADevice *dev)
|
|
{
|
|
return get_system_memory();
|
|
}
|
|
|
|
device_init(isabus_register_devices)
|