| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
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| 2 | /* |
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| 3 | * Crypto engine API |
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| 4 | * |
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| 5 | * Copyright (c) 2016 Baolin Wang <baolin.wang@linaro.org> |
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| 6 | * Copyright (c) 2023 Herbert Xu <herbert@gondor.apana.org.au> |
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| 7 | */ |
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| 8 | #ifndef _CRYPTO_INTERNAL_ENGINE_H |
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| 9 | #define _CRYPTO_INTERNAL_ENGINE_H |
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| 10 | |
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| 11 | #include <crypto/algapi.h> |
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| 12 | #include <crypto/engine.h> |
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| 13 | #include <linux/kthread.h> |
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| 14 | #include <linux/spinlock_types.h> |
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| 15 | #include <linux/types.h> |
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| 16 | |
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| 17 | #define ENGINE_NAME_LEN 30 |
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| 18 | |
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| 19 | struct device; |
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| 20 | |
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| 21 | /* |
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| 22 | * struct crypto_engine - crypto hardware engine |
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| 23 | * @name: the engine name |
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| 24 | * @busy: request pump is busy |
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| 25 | * @running: the engine is on working |
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| 26 | * @retry_support: indication that the hardware allows re-execution |
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| 27 | * of a failed backlog request |
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| 28 | * crypto-engine, in head position to keep order |
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| 29 | * @rt: whether this queue is set to run as a realtime task |
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| 30 | * @list: link with the global crypto engine list |
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| 31 | * @queue_lock: spinlock to synchronise access to request queue |
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| 32 | * @queue: the crypto queue of the engine |
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| 33 | * @kworker: kthread worker struct for request pump |
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| 34 | * @pump_requests: work struct for scheduling work to the request pump |
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| 35 | * @priv_data: the engine private data |
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| 36 | * @cur_req: the current request which is on processing |
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| 37 | */ |
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| 38 | struct crypto_engine { |
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| 39 | char name[ENGINE_NAME_LEN]; |
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| 40 | bool busy; |
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| 41 | bool running; |
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| 42 | |
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| 43 | bool retry_support; |
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| 44 | bool rt; |
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| 45 | |
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| 46 | struct list_head list; |
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| 47 | spinlock_t queue_lock; |
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| 48 | struct crypto_queue queue; |
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| 49 | struct device *dev; |
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| 50 | |
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| 51 | struct kthread_worker *kworker; |
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| 52 | struct kthread_work pump_requests; |
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| 53 | |
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| 54 | void *priv_data; |
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| 55 | struct crypto_async_request *cur_req; |
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| 56 | }; |
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| 57 | |
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| 58 | #endif |
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| 59 | |
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