/* * 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.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_unplug)(DeviceState *d); } VirtioBusClass; struct VirtioBusState { BusState parent_obj; /* * Only one VirtIODevice can be plugged on the bus. */ VirtIODevice *vdev; /* * This will be removed at the end of the series. */ VirtIOBindings bindings; }; int virtio_bus_plug_device(VirtIODevice *vdev); void virtio_bus_reset(VirtioBusState *bus); void virtio_bus_destroy_device(VirtioBusState *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); /* 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); #endif /* VIRTIO_BUS_H */