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/*
* 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/>.
*/
/* \file buffer_mgr.h
* Buffer Manager
*/
#ifndef __SSI_BUFFER_MGR_H__
#define __SSI_BUFFER_MGR_H__
#include <crypto/algapi.h>
#include "ssi_config.h"
#include "ssi_driver.h"
enum ssi_req_dma_buf_type {
SSI_DMA_BUF_NULL = 0,
SSI_DMA_BUF_DLLI,
SSI_DMA_BUF_MLLI
};
enum ssi_sg_cpy_direct {
SSI_SG_TO_BUF = 0,
SSI_SG_FROM_BUF = 1
};
struct ssi_mlli {
ssi_sram_addr_t sram_addr;
unsigned int nents; //sg nents
unsigned int mlli_nents; //mlli nents might be different than the above
};
struct mlli_params {
struct dma_pool *curr_pool;
u8 *mlli_virt_addr;
dma_addr_t mlli_dma_addr;
u32 mlli_len;
};
int ssi_buffer_mgr_init(struct ssi_drvdata *drvdata);
int ssi_buffer_mgr_fini(struct ssi_drvdata *drvdata);
int ssi_buffer_mgr_map_blkcipher_request(
struct ssi_drvdata *drvdata,
void *ctx,
unsigned int ivsize,
unsigned int nbytes,
void *info,
struct scatterlist *src,
struct scatterlist *dst);
void ssi_buffer_mgr_unmap_blkcipher_request(
struct device *dev,
void *ctx,
unsigned int ivsize,
struct scatterlist *src,
struct scatterlist *dst);
int ssi_buffer_mgr_map_aead_request(struct ssi_drvdata *drvdata, struct aead_request *req);
void ssi_buffer_mgr_unmap_aead_request(struct device *dev, struct aead_request *req);
int ssi_buffer_mgr_map_hash_request_final(struct ssi_drvdata *drvdata, void *ctx, struct scatterlist *src, unsigned int nbytes, bool do_update);
int ssi_buffer_mgr_map_hash_request_update(struct ssi_drvdata *drvdata, void *ctx, struct scatterlist *src, unsigned int nbytes, unsigned int block_size);
void ssi_buffer_mgr_unmap_hash_request(struct device *dev, void *ctx, struct scatterlist *src, bool do_revert);
void ssi_buffer_mgr_copy_scatterlist_portion(u8 *dest, struct scatterlist *sg, u32 to_skip, u32 end, enum ssi_sg_cpy_direct direct);
void ssi_buffer_mgr_zero_sgl(struct scatterlist *sgl, u32 data_len);
#endif /*__BUFFER_MGR_H__*/
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