[linux-2.6-block.git] / drivers / crypto / ccree / cc_ivgen.h

/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2012-2018 ARM Limited or its affiliates. */

#ifndef __CC_IVGEN_H__
#define __CC_IVGEN_H__

#include "cc_hw_queue_defs.h"

#define CC_IVPOOL_SEQ_LEN 8

/*!
 * Allocates iv-pool and maps resources.
 * This function generates the first IV pool.
 *
 * \param drvdata Driver's private context
 *
 * \return int Zero for success, negative value otherwise.
 */
int cc_ivgen_init(struct cc_drvdata *drvdata);

/*!
 * Free iv-pool and ivgen context.
 *
 * \param drvdata
 */
void cc_ivgen_fini(struct cc_drvdata *drvdata);

/*!
 * Generates the initial pool in SRAM.
 * This function should be invoked when resuming DX driver.
 *
 * \param drvdata
 *
 * \return int Zero for success, negative value otherwise.
 */
int cc_init_iv_sram(struct cc_drvdata *drvdata);

/*!
 * Acquires 16 Bytes IV from the iv-pool
 *
 * \param drvdata Driver private context
 * \param iv_out_dma Array of physical IV out addresses
 * \param iv_out_dma_len Length of iv_out_dma array (additional elements of
 *                       iv_out_dma array are ignore)
 * \param iv_out_size May be 8 or 16 bytes long
 * \param iv_seq IN/OUT array to the descriptors sequence
 * \param iv_seq_len IN/OUT pointer to the sequence length
 *
 * \return int Zero for success, negative value otherwise.
 */
int cc_get_iv(struct cc_drvdata *drvdata, dma_addr_t iv_out_dma[],
	      unsigned int iv_out_dma_len, unsigned int iv_out_size,
	      struct cc_hw_desc iv_seq[], unsigned int *iv_seq_len);

#endif /*__CC_IVGEN_H__*/
Commit	Line	Data
4c3f9727 GBY	1	/* SPDX-License-Identifier: GPL-2.0 */
	2	/* Copyright (C) 2012-2018 ARM Limited or its affiliates. */
	3
	4	#ifndef __CC_IVGEN_H__
	5	#define __CC_IVGEN_H__
	6
	7	#include "cc_hw_queue_defs.h"
	8
	9	#define CC_IVPOOL_SEQ_LEN 8
	10
	11	/*!
	12	* Allocates iv-pool and maps resources.
	13	* This function generates the first IV pool.
	14	*
	15	* \param drvdata Driver's private context
	16	*
	17	* \return int Zero for success, negative value otherwise.
	18	*/
	19	int cc_ivgen_init(struct cc_drvdata *drvdata);
	20
	21	/*!
	22	* Free iv-pool and ivgen context.
	23	*
	24	* \param drvdata
	25	*/
	26	void cc_ivgen_fini(struct cc_drvdata *drvdata);
	27
	28	/*!
	29	* Generates the initial pool in SRAM.
	30	* This function should be invoked when resuming DX driver.
	31	*
	32	* \param drvdata
	33	*
	34	* \return int Zero for success, negative value otherwise.
	35	*/
	36	int cc_init_iv_sram(struct cc_drvdata *drvdata);
	37
	38	/*!
	39	* Acquires 16 Bytes IV from the iv-pool
	40	*
	41	* \param drvdata Driver private context
	42	* \param iv_out_dma Array of physical IV out addresses
	43	* \param iv_out_dma_len Length of iv_out_dma array (additional elements of
	44	* iv_out_dma array are ignore)
	45	* \param iv_out_size May be 8 or 16 bytes long
	46	* \param iv_seq IN/OUT array to the descriptors sequence
	47	* \param iv_seq_len IN/OUT pointer to the sequence length
	48	*
	49	* \return int Zero for success, negative value otherwise.
	50	*/
	51	int cc_get_iv(struct cc_drvdata *drvdata, dma_addr_t iv_out_dma[],
	52	unsigned int iv_out_dma_len, unsigned int iv_out_size,
	53	struct cc_hw_desc iv_seq[], unsigned int *iv_seq_len);
	54
	55	#endif /__CC_IVGEN_H__/