drivers/staging/ccree/ssi_buffer_mgr.h

   1 /*
   2  * Copyright (C) 2012-2017 ARM Limited or its affiliates.
   3  *
   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.
   7  *
   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.
  12  *
  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
  18    Buffer Manager
  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;
  49         uint8_t *mlli_virt_addr;
  50         dma_addr_t mlli_dma_addr;
  51         uint32_t mlli_len;
  52 };
  53
  54 int ssi_buffer_mgr_init(struct ssi_drvdata *drvdata);
  55
  56 int ssi_buffer_mgr_fini(struct ssi_drvdata *drvdata);
  57
  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(
  68         struct device *dev,
  69         void *ctx,
  70         unsigned int ivsize,
  71         struct scatterlist *src,
  72         struct scatterlist *dst);
  73
  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
  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
  84 void ssi_buffer_mgr_copy_scatterlist_portion(u8 *dest, struct scatterlist *sg, uint32_t to_skip, uint32_t end, enum ssi_sg_cpy_direct direct);
  85
  86 void ssi_buffer_mgr_zero_sgl(struct scatterlist *sgl, uint32_t data_len);
  87
  88
  89 #ifdef CC_DMA_48BIT_SIM
  90 dma_addr_t ssi_buff_mgr_update_dma_addr(dma_addr_t orig_addr, uint32_t data_len);
  91 dma_addr_t ssi_buff_mgr_restore_dma_addr(dma_addr_t orig_addr);
  92
  93 #define SSI_UPDATE_DMA_ADDR_TO_48BIT(addr,size) addr = \
  94                                         ssi_buff_mgr_update_dma_addr(addr,size)
  95 #define SSI_RESTORE_DMA_ADDR_TO_48BIT(addr) addr = \
  96                                         ssi_buff_mgr_restore_dma_addr(addr)
  97 #else
  98
  99 #define SSI_UPDATE_DMA_ADDR_TO_48BIT(addr,size) addr = addr
 100 #define SSI_RESTORE_DMA_ADDR_TO_48BIT(addr) addr = addr
 101
 102 #endif
 103
 104 #endif /*__BUFFER_MGR_H__*/
 105