root/drivers/crypto/ccree/cc_buffer_mgr.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (C) 2012-2019 ARM Limited (or its affiliates). */
   3 
   4 /* \file cc_buffer_mgr.h
   5  * Buffer Manager
   6  */
   7 
   8 #ifndef __CC_BUFFER_MGR_H__
   9 #define __CC_BUFFER_MGR_H__
  10 
  11 #include <crypto/algapi.h>
  12 
  13 #include "cc_driver.h"
  14 
  15 enum cc_req_dma_buf_type {
  16         CC_DMA_BUF_NULL = 0,
  17         CC_DMA_BUF_DLLI,
  18         CC_DMA_BUF_MLLI
  19 };
  20 
  21 enum cc_sg_cpy_direct {
  22         CC_SG_TO_BUF = 0,
  23         CC_SG_FROM_BUF = 1
  24 };
  25 
  26 struct cc_mlli {
  27         cc_sram_addr_t sram_addr;
  28         unsigned int mapped_nents;
  29         unsigned int nents; //sg nents
  30         unsigned int mlli_nents; //mlli nents might be different than the above
  31 };
  32 
  33 struct mlli_params {
  34         struct dma_pool *curr_pool;
  35         u8 *mlli_virt_addr;
  36         dma_addr_t mlli_dma_addr;
  37         u32 mlli_len;
  38 };
  39 
  40 int cc_buffer_mgr_init(struct cc_drvdata *drvdata);
  41 
  42 int cc_buffer_mgr_fini(struct cc_drvdata *drvdata);
  43 
  44 int cc_map_cipher_request(struct cc_drvdata *drvdata, void *ctx,
  45                           unsigned int ivsize, unsigned int nbytes,
  46                           void *info, struct scatterlist *src,
  47                           struct scatterlist *dst, gfp_t flags);
  48 
  49 void cc_unmap_cipher_request(struct device *dev, void *ctx, unsigned int ivsize,
  50                              struct scatterlist *src, struct scatterlist *dst);
  51 
  52 int cc_map_aead_request(struct cc_drvdata *drvdata, struct aead_request *req);
  53 
  54 void cc_unmap_aead_request(struct device *dev, struct aead_request *req);
  55 
  56 int cc_map_hash_request_final(struct cc_drvdata *drvdata, void *ctx,
  57                               struct scatterlist *src, unsigned int nbytes,
  58                               bool do_update, gfp_t flags);
  59 
  60 int cc_map_hash_request_update(struct cc_drvdata *drvdata, void *ctx,
  61                                struct scatterlist *src, unsigned int nbytes,
  62                                unsigned int block_size, gfp_t flags);
  63 
  64 void cc_unmap_hash_request(struct device *dev, void *ctx,
  65                            struct scatterlist *src, bool do_revert);
  66 
  67 void cc_copy_sg_portion(struct device *dev, u8 *dest, struct scatterlist *sg,
  68                         u32 to_skip, u32 end, enum cc_sg_cpy_direct direct);
  69 
  70 #endif /*__BUFFER_MGR_H__*/