72 lines
2.0 KiB
C
72 lines
2.0 KiB
C
/*
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* Copyright (C) 2012-2017 ARM Limited or its affiliates.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __SSI_IVGEN_H__
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#define __SSI_IVGEN_H__
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#include "cc_hw_queue_defs.h"
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#define SSI_IVPOOL_SEQ_LEN 8
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/*!
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* Allocates iv-pool and maps resources.
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* This function generates the first IV pool.
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*
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* \param drvdata Driver's private context
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*
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* \return int Zero for success, negative value otherwise.
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*/
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int ssi_ivgen_init(struct ssi_drvdata *drvdata);
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/*!
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* Free iv-pool and ivgen context.
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*
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* \param drvdata
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*/
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void ssi_ivgen_fini(struct ssi_drvdata *drvdata);
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/*!
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* Generates the initial pool in SRAM.
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* This function should be invoked when resuming DX driver.
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*
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* \param drvdata
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*
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* \return int Zero for success, negative value otherwise.
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*/
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int ssi_ivgen_init_sram_pool(struct ssi_drvdata *drvdata);
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/*!
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* Acquires 16 Bytes IV from the iv-pool
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*
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* \param drvdata Driver private context
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* \param iv_out_dma Array of physical IV out addresses
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* \param iv_out_dma_len Length of iv_out_dma array (additional elements of iv_out_dma array are ignore)
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* \param iv_out_size May be 8 or 16 bytes long
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* \param iv_seq IN/OUT array to the descriptors sequence
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* \param iv_seq_len IN/OUT pointer to the sequence length
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*
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* \return int Zero for success, negative value otherwise.
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*/
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int ssi_ivgen_getiv(
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struct ssi_drvdata *drvdata,
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dma_addr_t iv_out_dma[],
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unsigned int iv_out_dma_len,
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unsigned int iv_out_size,
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struct cc_hw_desc iv_seq[],
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unsigned int *iv_seq_len);
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#endif /*__SSI_IVGEN_H__*/
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