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/*
* QEMU Crypto Device Common Vhost Implement
*
* Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
*
* Authors:
* Gonglei <arei.gonglei@huawei.com>
* Jay Zhou <jianjay.zhou@huawei.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/>.
*
*/
#ifndef CRYPTODEV_VHOST_H
#define CRYPTODEV_VHOST_H
#include "qemu-common.h"
#include "hw/virtio/vhost.h"
#include "hw/virtio/vhost-backend.h"
#include "chardev/char.h"
#include "sysemu/cryptodev.h"
typedef struct CryptoDevBackendVhostOptions {
VhostBackendType backend_type;
void *opaque;
int total_queues;
CryptoDevBackendClient *cc;
} CryptoDevBackendVhostOptions;
typedef struct CryptoDevBackendVhost {
struct vhost_dev dev;
struct vhost_virtqueue vqs[1];
int backend;
CryptoDevBackendClient *cc;
} CryptoDevBackendVhost;
/**
* cryptodev_vhost_get_max_queues:
* @crypto: the cryptodev backend common vhost object
*
* Get the maximum queue number of @crypto.
*
*
* Returns: the maximum queue number
*/
uint64_t
cryptodev_vhost_get_max_queues(
CryptoDevBackendVhost *crypto);
/**
* cryptodev_vhost_init:
* @options: the common vhost object's option
*
* Creates a new cryptodev backend common vhost object
*
** The returned object must be released with
* cryptodev_vhost_cleanup() when no
* longer required
*
* Returns: the cryptodev backend common vhost object
*/
struct CryptoDevBackendVhost *
cryptodev_vhost_init(
CryptoDevBackendVhostOptions *options);
/**
* cryptodev_vhost_cleanup:
* @crypto: the cryptodev backend common vhost object
*
* Clean the resouce associated with @crypto that realizaed
* by cryptodev_vhost_init()
*
*/
void cryptodev_vhost_cleanup(
CryptoDevBackendVhost *crypto);
/**
* cryptodev_get_vhost:
* @cc: the client object for each queue
* @b: the cryptodev backend common vhost object
* @queue: the cryptodev backend queue index
*
* Gets a new cryptodev backend common vhost object based on
* @b and @queue
*
* Returns: the cryptodev backend common vhost object
*/
CryptoDevBackendVhost *
cryptodev_get_vhost(CryptoDevBackendClient *cc,
CryptoDevBackend *b,
uint16_t queue);
/**
* cryptodev_vhost_start:
* @dev: the virtio crypto object
* @total_queues: the total count of queue
*
* Starts the vhost crypto logic
*
* Returns: 0 for success, negative for errors
*/
int cryptodev_vhost_start(VirtIODevice *dev, int total_queues);
/**
* cryptodev_vhost_stop:
* @dev: the virtio crypto object
* @total_queues: the total count of queue
*
* Stops the vhost crypto logic
*
*/
void cryptodev_vhost_stop(VirtIODevice *dev, int total_queues);
/**
* cryptodev_vhost_virtqueue_mask:
* @dev: the virtio crypto object
* @queue: the cryptodev backend queue index
* @idx: the virtqueue index
* @mask: mask or not (true or false)
*
* Mask/unmask events for @idx virtqueue on @dev device
*
*/
void cryptodev_vhost_virtqueue_mask(VirtIODevice *dev,
int queue,
int idx, bool mask);
/**
* cryptodev_vhost_virtqueue_pending:
* @dev: the virtio crypto object
* @queue: the cryptodev backend queue index
* @idx: the virtqueue index
*
* Test and clear event pending status for @idx virtqueue on @dev device.
* Should be called after unmask to avoid losing events.
*
* Returns: true for success, false for errors
*/
bool cryptodev_vhost_virtqueue_pending(VirtIODevice *dev,
int queue, int idx);
#endif /* CRYPTODEV_VHOST_H */
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