qemu/hw/net/ne2000-isa.c
Akihiko Odaki 7d0fefdf81 net: Provide MemReentrancyGuard * to qemu_new_nic()
Recently MemReentrancyGuard was added to DeviceState to record that the
device is engaging in I/O. The network device backend needs to update it
when delivering a packet to a device.

In preparation for such a change, add MemReentrancyGuard * as a
parameter of qemu_new_nic().

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2023-11-21 15:42:34 +08:00

154 lines
4.8 KiB
C

/*
* QEMU NE2000 emulation -- isa bus windup
*
* Copyright (c) 2003-2004 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "hw/isa/isa.h"
#include "hw/net/ne2000-isa.h"
#include "migration/vmstate.h"
#include "ne2000.h"
#include "sysemu/sysemu.h"
#include "qapi/error.h"
#include "qapi/visitor.h"
#include "qemu/module.h"
#include "qom/object.h"
OBJECT_DECLARE_SIMPLE_TYPE(ISANE2000State, ISA_NE2000)
struct ISANE2000State {
ISADevice parent_obj;
uint32_t iobase;
uint32_t isairq;
NE2000State ne2000;
};
static NetClientInfo net_ne2000_isa_info = {
.type = NET_CLIENT_DRIVER_NIC,
.size = sizeof(NICState),
.receive = ne2000_receive,
};
static const VMStateDescription vmstate_isa_ne2000 = {
.name = "ne2000",
.version_id = 2,
.minimum_version_id = 0,
.fields = (VMStateField[]) {
VMSTATE_STRUCT(ne2000, ISANE2000State, 0, vmstate_ne2000, NE2000State),
VMSTATE_END_OF_LIST()
}
};
static void isa_ne2000_realizefn(DeviceState *dev, Error **errp)
{
ISADevice *isadev = ISA_DEVICE(dev);
ISANE2000State *isa = ISA_NE2000(dev);
NE2000State *s = &isa->ne2000;
ne2000_setup_io(s, DEVICE(isadev), 0x20);
isa_register_ioport(isadev, &s->io, isa->iobase);
s->irq = isa_get_irq(isadev, isa->isairq);
qemu_macaddr_default_if_unset(&s->c.macaddr);
ne2000_reset(s);
s->nic = qemu_new_nic(&net_ne2000_isa_info, &s->c,
object_get_typename(OBJECT(dev)), dev->id,
&dev->mem_reentrancy_guard, s);
qemu_format_nic_info_str(qemu_get_queue(s->nic), s->c.macaddr.a);
}
static Property ne2000_isa_properties[] = {
DEFINE_PROP_UINT32("iobase", ISANE2000State, iobase, 0x300),
DEFINE_PROP_UINT32("irq", ISANE2000State, isairq, 9),
DEFINE_NIC_PROPERTIES(ISANE2000State, ne2000.c),
DEFINE_PROP_END_OF_LIST(),
};
static void isa_ne2000_class_initfn(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = isa_ne2000_realizefn;
device_class_set_props(dc, ne2000_isa_properties);
dc->vmsd = &vmstate_isa_ne2000;
set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
}
static void isa_ne2000_get_bootindex(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
ISANE2000State *isa = ISA_NE2000(obj);
NE2000State *s = &isa->ne2000;
visit_type_int32(v, name, &s->c.bootindex, errp);
}
static void isa_ne2000_set_bootindex(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
ISANE2000State *isa = ISA_NE2000(obj);
NE2000State *s = &isa->ne2000;
int32_t boot_index;
Error *local_err = NULL;
if (!visit_type_int32(v, name, &boot_index, errp)) {
return;
}
/* check whether bootindex is present in fw_boot_order list */
check_boot_index(boot_index, &local_err);
if (local_err) {
goto out;
}
/* change bootindex to a new one */
s->c.bootindex = boot_index;
out:
error_propagate(errp, local_err);
}
static void isa_ne2000_instance_init(Object *obj)
{
object_property_add(obj, "bootindex", "int32",
isa_ne2000_get_bootindex,
isa_ne2000_set_bootindex, NULL, NULL);
object_property_set_int(obj, "bootindex", -1, NULL);
}
static const TypeInfo ne2000_isa_info = {
.name = TYPE_ISA_NE2000,
.parent = TYPE_ISA_DEVICE,
.instance_size = sizeof(ISANE2000State),
.class_init = isa_ne2000_class_initfn,
.instance_init = isa_ne2000_instance_init,
};
static void ne2000_isa_register_types(void)
{
type_register_static(&ne2000_isa_info);
}
type_init(ne2000_isa_register_types)