From 2589ad84047f1dbed741b48785680b152db2e5db Mon Sep 17 00:00:00 2001 From: Corentin LABBE Date: Wed, 31 Aug 2016 14:02:57 +0200 Subject: crypto: engine - move crypto engine to its own header This patch move the whole crypto engine API to its own header crypto/engine.h. Signed-off-by: Corentin Labbe Signed-off-by: Herbert Xu --- include/crypto/engine.h | 90 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 include/crypto/engine.h (limited to 'include/crypto/engine.h') diff --git a/include/crypto/engine.h b/include/crypto/engine.h new file mode 100644 index 000000000000..40899bd246ec --- /dev/null +++ b/include/crypto/engine.h @@ -0,0 +1,90 @@ +/* + * Crypto engine API + * + * Copyright (c) 2016 Baolin Wang + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + */ +#ifndef _CRYPTO_ENGINE_H +#define _CRYPTO_ENGINE_H + +#include +#include +#include +#include +#include + +#define ENGINE_NAME_LEN 30 +/* + * 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 + * @cur_req_prepared: current request is prepared + * @list: link with the global crypto engine list + * @queue_lock: spinlock to syncronise 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 + * @prepare_request: do some prepare if need before handle the current request + * @unprepare_request: undo any work done by prepare_message() + * @crypt_one_request: do encryption for current request + * @kworker: thread struct for request pump + * @kworker_task: pointer to task for request pump kworker thread + * @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 { + char name[ENGINE_NAME_LEN]; + bool idling; + bool busy; + bool running; + bool cur_req_prepared; + + struct list_head list; + spinlock_t queue_lock; + struct crypto_queue queue; + + bool rt; + + int (*prepare_crypt_hardware)(struct crypto_engine *engine); + int (*unprepare_crypt_hardware)(struct crypto_engine *engine); + + int (*prepare_request)(struct crypto_engine *engine, + struct ablkcipher_request *req); + int (*unprepare_request)(struct crypto_engine *engine, + struct ablkcipher_request *req); + int (*crypt_one_request)(struct crypto_engine *engine, + struct ablkcipher_request *req); + + struct kthread_worker kworker; + struct task_struct *kworker_task; + struct kthread_work pump_requests; + + void *priv_data; + struct ablkcipher_request *cur_req; +}; + +int crypto_transfer_request(struct crypto_engine *engine, + struct ablkcipher_request *req, bool need_pump); +int crypto_transfer_request_to_engine(struct crypto_engine *engine, + struct ablkcipher_request *req); +void crypto_finalize_request(struct crypto_engine *engine, + struct ablkcipher_request *req, int err); +int crypto_engine_start(struct crypto_engine *engine); +int crypto_engine_stop(struct crypto_engine *engine); +struct crypto_engine *crypto_engine_alloc_init(struct device *dev, bool rt); +int crypto_engine_exit(struct crypto_engine *engine); + +#endif /* _CRYPTO_ENGINE_H */ -- cgit v1.2.3