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 19 struct 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 */ 38 struct 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 59