/*
* Copyright ( c ) 2014 , Google , Inc . All rights reserved
*
* 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 .
*/
#pragma once
#include <lib/sm.h>
#include <list.h>
#include <sys/types.h>
__BEGIN_CDECLS
enum {
VDEV_STATE_RESET = 0 ,
VDEV_STATE_ACTIVE,
};
struct vdev;
struct vdev_ops {
size_t (*descr_sz)(struct vdev* vd);
ssize_t (*get_descr)(struct vdev* vd, void * descr);
status_t (*probe)(struct vdev* vd, void * descr);
status_t (*reset)(struct vdev* vd);
status_t (*kick_vqueue)(struct vdev* vd, uint vqid);
};
struct vdev {
volatile int state;
uint devid;
uint descr_offset;
ext_mem_client_id_t client_id;
struct list_node node;
const struct vdev_ops* ops;
};
struct trusty_virtio_bus;
typedef uint64_t ns_paddr_t;
/*
* Register virtio device
*/
status_t virtio_register_device(struct trusty_virtio_bus* vb, struct vdev* vd);
/*
* Retrieve device description to be shared with NS side
*/
ssize_t virtio_get_description(ext_mem_client_id_t client_id,
ext_mem_obj_id_t descr_id,
ns_size_t sz,
uint mmu_flags);
/*
* Called by NS side to finilize initialization
*/
status_t virtio_start(ext_mem_client_id_t client_id,
ext_mem_obj_id_t descr_id,
ns_size_t sz,
uint mmu_flags);
/*
* Called by NS side to deinitialize virtio subsystem
*/
status_t virtio_stop(ext_mem_client_id_t client_id,
ext_mem_obj_id_t descr_id,
ns_size_t sz,
uint mmu_flags,
bool unregister_vm_notifier);
/*
* Reset virtio device with specified device id
*/
status_t virtio_device_reset(ext_mem_client_id_t client_id, uint devid);
/*
* Kick vq for specified device
*/
status_t virtio_kick_vq(ext_mem_client_id_t client_id, uint devid, uint vqid);
struct trusty_virtio_bus_notifier {
struct list_node node;
status_t (*on_create)(struct trusty_virtio_bus* vb);
};
void trusty_virtio_register_bus_notifier(struct trusty_virtio_bus_notifier* n);
__END_CDECLS
Messung V0.5 in Prozent C=94 H=90 G=91
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-06-27)
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