linux/include/crypto/internal/engine.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Crypto engine API
 *
 * Copyright (c) 2016 Baolin Wang <[email protected]>
 * Copyright (c) 2023 Herbert Xu <[email protected]>
 */
#ifndef _CRYPTO_INTERNAL_ENGINE_H
#define _CRYPTO_INTERNAL_ENGINE_H

#include <crypto/algapi.h>
#include <crypto/engine.h>
#include <linux/kthread.h>
#include <linux/spinlock_types.h>
#include <linux/types.h>

#define ENGINE_NAME_LEN …

struct device;

/*
 * struct crypto_engine - crypto hardware engine
 * @name: the engine name
 * @idling: the engine is entering idle state
 * @busy: request pump is busy
 * @running: the engine is on working
 * @retry_support: indication that the hardware allows re-execution
 * of a failed backlog request
 * crypto-engine, in head position to keep order
 * @list: link with the global crypto engine list
 * @queue_lock: spinlock to synchronise access to request queue
 * @queue: the crypto queue of the engine
 * @rt: whether this queue is set to run as a realtime task
 * @prepare_crypt_hardware: a request will soon arrive from the queue
 * so the subsystem requests the driver to prepare the hardware
 * by issuing this call
 * @unprepare_crypt_hardware: there are currently no more requests on the
 * queue so the subsystem notifies the driver that it may relax the
 * hardware by issuing this call
 * @do_batch_requests: execute a batch of requests. Depends on multiple
 * requests support.
 * @kworker: kthread worker struct for request pump
 * @pump_requests: work struct for scheduling work to the request pump
 * @priv_data: the engine private data
 * @cur_req: the current request which is on processing
 */
struct crypto_engine { … };

#endif