engine.h

 1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/*
 3 * Crypto engine API
 4 *
 5 * Copyright (c) 2016 Baolin Wang <baolin.wang@linaro.org>
 6 * Copyright (c) 2023 Herbert Xu <herbert@gondor.apana.org.au>
 7 */
 8#ifndef _CRYPTO_INTERNAL_ENGINE_H
 9#define _CRYPTO_INTERNAL_ENGINE_H
10
11#include <crypto/algapi.h>
12#include <crypto/engine.h>
13#include <linux/kthread.h>
14#include <linux/spinlock_types.h>
15#include <linux/types.h>
16
17#define ENGINE_NAME_LEN	30
18
19struct device;
20
21/*
22 * struct crypto_engine - crypto hardware engine
23 * @name: the engine name
24 * @busy: request pump is busy
25 * @running: the engine is on working
26 * @retry_support: indication that the hardware allows re-execution
27 * of a failed backlog request
28 * crypto-engine, in head position to keep order
29 * @rt: whether this queue is set to run as a realtime task
30 * @list: link with the global crypto engine list
31 * @queue_lock: spinlock to synchronise access to request queue
32 * @queue: the crypto queue of the engine
33 * @kworker: kthread worker struct for request pump
34 * @pump_requests: work struct for scheduling work to the request pump
35 * @priv_data: the engine private data
36 * @cur_req: the current request which is on processing
37 */
38struct crypto_engine {
39	char			name[ENGINE_NAME_LEN];
40	bool			busy;
41	bool			running;
42
43	bool			retry_support;
44	bool			rt;
45
46	struct list_head	list;
47	spinlock_t		queue_lock;
48	struct crypto_queue	queue;
49	struct device		*dev;
50
51	struct kthread_worker           *kworker;
52	struct kthread_work             pump_requests;
53
54	void				*priv_data;
55	struct crypto_async_request	*cur_req;
56};
57
58#endif