[mirror_ubuntu-artful-kernel.git] / drivers / staging / ccree / ssi_buffer_mgr.h

/*
 * 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__*/
Commit	Line	Data
abefd674 GBY	1	/*
abefd674 GBY	2	* Copyright (C) 2012-2017 ARM Limited or its affiliates.
c8f17865	3	*
abefd674 GBY	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
c8f17865	7	*
abefd674 GBY	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	* GNU General Public License for more details.
c8f17865	12	*
abefd674 GBY	13	* You should have received a copy of the GNU General Public License
	14	* along with this program; if not, see <http://www.gnu.org/licenses/>.
	15	*/
	16
	17	/* \file buffer_mgr.h
84e8a6cf	18	* Buffer Manager
abefd674 GBY	19	*/
	20
	21	#ifndef __SSI_BUFFER_MGR_H__
	22	#define __SSI_BUFFER_MGR_H__
	23
	24	#include <crypto/algapi.h>
	25
	26	#include "ssi_config.h"
	27	#include "ssi_driver.h"
	28
	29
	30	enum ssi_req_dma_buf_type {
	31	SSI_DMA_BUF_NULL = 0,
	32	SSI_DMA_BUF_DLLI,
	33	SSI_DMA_BUF_MLLI
	34	};
	35
	36	enum ssi_sg_cpy_direct {
	37	SSI_SG_TO_BUF = 0,
	38	SSI_SG_FROM_BUF = 1
	39	};
	40
	41	struct ssi_mlli {
	42	ssi_sram_addr_t sram_addr;
	43	unsigned int nents; //sg nents
	44	unsigned int mlli_nents; //mlli nents might be different than the above
	45	};
	46
	47	struct mlli_params {
	48	struct dma_pool *curr_pool;
a1ab41eb	49	u8 *mlli_virt_addr;
abefd674	50	dma_addr_t mlli_dma_addr;
a1ab41eb	51	u32 mlli_len;
abefd674 GBY	52	};
	53
	54	int ssi_buffer_mgr_init(struct ssi_drvdata *drvdata);
	55
	56	int ssi_buffer_mgr_fini(struct ssi_drvdata *drvdata);
	57
302ef8eb GBY	58	int ssi_buffer_mgr_map_blkcipher_request(
	59	struct ssi_drvdata *drvdata,
	60	void *ctx,
	61	unsigned int ivsize,
	62	unsigned int nbytes,
	63	void *info,
	64	struct scatterlist *src,
	65	struct scatterlist *dst);
	66
	67	void ssi_buffer_mgr_unmap_blkcipher_request(
c8f17865	68	struct device *dev,
302ef8eb GBY	69	void *ctx,
	70	unsigned int ivsize,
	71	struct scatterlist *src,
	72	struct scatterlist *dst);
	73
fe0a1951 GBY	74	int ssi_buffer_mgr_map_aead_request(struct ssi_drvdata drvdata, struct aead_request req);
	75
	76	void ssi_buffer_mgr_unmap_aead_request(struct device dev, struct aead_request req);
	77
50cfbbb7 GBY	78	int ssi_buffer_mgr_map_hash_request_final(struct ssi_drvdata drvdata, void ctx, struct scatterlist *src, unsigned int nbytes, bool do_update);
	79
	80	int ssi_buffer_mgr_map_hash_request_update(struct ssi_drvdata drvdata, void ctx, struct scatterlist *src, unsigned int nbytes, unsigned int block_size);
	81
	82	void ssi_buffer_mgr_unmap_hash_request(struct device dev, void ctx, struct scatterlist *src, bool do_revert);
	83
a1ab41eb	84	void ssi_buffer_mgr_copy_scatterlist_portion(u8 dest, struct scatterlist sg, u32 to_skip, u32 end, enum ssi_sg_cpy_direct direct);
abefd674	85
a1ab41eb	86	void ssi_buffer_mgr_zero_sgl(struct scatterlist *sgl, u32 data_len);
abefd674	87
abefd674 GBY	88	#endif /__BUFFER_MGR_H__/
abefd674 GBY	89