diff options
Diffstat (limited to 'drivers/staging/ccree/ssi_ivgen.h')
-rw-r--r-- | drivers/staging/ccree/ssi_ivgen.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/drivers/staging/ccree/ssi_ivgen.h b/drivers/staging/ccree/ssi_ivgen.h new file mode 100644 index 000000000000..bc69cd8ca418 --- /dev/null +++ b/drivers/staging/ccree/ssi_ivgen.h @@ -0,0 +1,72 @@ +/* + * Copyright (C) 2012-2017 ARM Limited or its affiliates. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef __SSI_IVGEN_H__ +#define __SSI_IVGEN_H__ + +#include "cc_hw_queue_defs.h" + + +#define SSI_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 ssi_ivgen_init(struct ssi_drvdata *drvdata); + +/*! + * Free iv-pool and ivgen context. + * + * \param drvdata + */ +void ssi_ivgen_fini(struct ssi_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 ssi_ivgen_init_sram_pool(struct ssi_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 ssi_ivgen_getiv( + struct ssi_drvdata *drvdata, + dma_addr_t iv_out_dma[], + unsigned int iv_out_dma_len, + unsigned int iv_out_size, + HwDesc_s iv_seq[], + unsigned int *iv_seq_len); + +#endif /*__SSI_IVGEN_H__*/ |