5e96f5d2f8
Right now we have these pairs: - virtio_bus_plug_device/virtio_bus_destroy_device. The first takes a VirtIODevice, the second takes a VirtioBusState - device_plugged/device_unplug callbacks in the VirtioBusClass (here it's just the naming that is inconsistent) - virtio_bus_destroy_device is not called by anyone (and since it calls qdev_free, it would be called by the proxies---but then the callback is useless since the proxies can do whatever they want before calling virtio_bus_destroy_device) And there is a k->init but no k->exit, hence virtio_device_exit is overwritten by subclasses (except virtio-9p). This cleans it up by: - renaming the device_unplug callback to device_unplugged - renaming virtio_bus_plug_device to virtio_bus_device_plugged, matching the callback name - renaming virtio_bus_destroy_device to virtio_bus_device_unplugged, removing the qdev_free, making it take a VirtIODevice and calling it from virtio_device_exit - adding a k->exit callback virtio_device_exit is still overwritten, the next patches will fix that. Cc: qemu-stable@nongnu.org Acked-by: Andreas Faerber <afaerber@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
110 lines
4.0 KiB
C
110 lines
4.0 KiB
C
/*
|
|
* VirtioBus
|
|
*
|
|
* Copyright (C) 2012 : GreenSocs Ltd
|
|
* http://www.greensocs.com/ , email: info@greensocs.com
|
|
*
|
|
* Developed by :
|
|
* Frederic Konrad <fred.konrad@greensocs.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#ifndef VIRTIO_BUS_H
|
|
#define VIRTIO_BUS_H
|
|
|
|
#include "hw/qdev.h"
|
|
#include "sysemu/sysemu.h"
|
|
#include "hw/virtio/virtio.h"
|
|
|
|
#define TYPE_VIRTIO_BUS "virtio-bus"
|
|
#define VIRTIO_BUS_GET_CLASS(obj) \
|
|
OBJECT_GET_CLASS(VirtioBusClass, obj, TYPE_VIRTIO_BUS)
|
|
#define VIRTIO_BUS_CLASS(klass) \
|
|
OBJECT_CLASS_CHECK(VirtioBusClass, klass, TYPE_VIRTIO_BUS)
|
|
#define VIRTIO_BUS(obj) OBJECT_CHECK(VirtioBusState, (obj), TYPE_VIRTIO_BUS)
|
|
|
|
typedef struct VirtioBusState VirtioBusState;
|
|
|
|
typedef struct VirtioBusClass {
|
|
/* This is what a VirtioBus must implement */
|
|
BusClass parent;
|
|
void (*notify)(DeviceState *d, uint16_t vector);
|
|
void (*save_config)(DeviceState *d, QEMUFile *f);
|
|
void (*save_queue)(DeviceState *d, int n, QEMUFile *f);
|
|
int (*load_config)(DeviceState *d, QEMUFile *f);
|
|
int (*load_queue)(DeviceState *d, int n, QEMUFile *f);
|
|
int (*load_done)(DeviceState *d, QEMUFile *f);
|
|
unsigned (*get_features)(DeviceState *d);
|
|
bool (*query_guest_notifiers)(DeviceState *d);
|
|
int (*set_guest_notifiers)(DeviceState *d, int nvqs, bool assign);
|
|
int (*set_host_notifier)(DeviceState *d, int n, bool assigned);
|
|
void (*vmstate_change)(DeviceState *d, bool running);
|
|
/*
|
|
* transport independent init function.
|
|
* This is called by virtio-bus just after the device is plugged.
|
|
*/
|
|
void (*device_plugged)(DeviceState *d);
|
|
/*
|
|
* transport independent exit function.
|
|
* This is called by virtio-bus just before the device is unplugged.
|
|
*/
|
|
void (*device_unplugged)(DeviceState *d);
|
|
/*
|
|
* Does the transport have variable vring alignment?
|
|
* (ie can it ever call virtio_queue_set_align()?)
|
|
* Note that changing this will break migration for this transport.
|
|
*/
|
|
bool has_variable_vring_alignment;
|
|
} VirtioBusClass;
|
|
|
|
struct VirtioBusState {
|
|
BusState parent_obj;
|
|
};
|
|
|
|
int virtio_bus_device_plugged(VirtIODevice *vdev);
|
|
void virtio_bus_reset(VirtioBusState *bus);
|
|
void virtio_bus_device_unplugged(VirtIODevice *bus);
|
|
/* Get the device id of the plugged device. */
|
|
uint16_t virtio_bus_get_vdev_id(VirtioBusState *bus);
|
|
/* Get the config_len field of the plugged device. */
|
|
size_t virtio_bus_get_vdev_config_len(VirtioBusState *bus);
|
|
/* Get the features of the plugged device. */
|
|
uint32_t virtio_bus_get_vdev_features(VirtioBusState *bus,
|
|
uint32_t requested_features);
|
|
/* Set the features of the plugged device. */
|
|
void virtio_bus_set_vdev_features(VirtioBusState *bus,
|
|
uint32_t requested_features);
|
|
/* Get bad features of the plugged device. */
|
|
uint32_t virtio_bus_get_vdev_bad_features(VirtioBusState *bus);
|
|
/* Get config of the plugged device. */
|
|
void virtio_bus_get_vdev_config(VirtioBusState *bus, uint8_t *config);
|
|
/* Set config of the plugged device. */
|
|
void virtio_bus_set_vdev_config(VirtioBusState *bus, uint8_t *config);
|
|
|
|
static inline VirtIODevice *virtio_bus_get_device(VirtioBusState *bus)
|
|
{
|
|
BusState *qbus = &bus->parent_obj;
|
|
BusChild *kid = QTAILQ_FIRST(&qbus->children);
|
|
DeviceState *qdev = kid ? kid->child : NULL;
|
|
|
|
/* This is used on the data path, the cast is guaranteed
|
|
* to succeed by the qdev machinery.
|
|
*/
|
|
return (VirtIODevice *)qdev;
|
|
}
|
|
|
|
#endif /* VIRTIO_BUS_H */
|