LXR linux/drivers/crypto/ccree/cc_buffer

   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
  15enum cc_req_dma_buf_type {
  16        CC_DMA_BUF_NULL = 0,
  17        CC_DMA_BUF_DLLI,
  18        CC_DMA_BUF_MLLI
  19};
  20
  21enum cc_sg_cpy_direct {
  22        CC_SG_TO_BUF = 0,
  23        CC_SG_FROM_BUF = 1
  24};
  25
  26struct cc_mlli {
  27        u32 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
  33struct mlli_params {
  34        struct dma_pool *curr_pool;
  35        void *mlli_virt_addr;
  36        dma_addr_t mlli_dma_addr;
  37        u32 mlli_len;
  38};
  39
  40int cc_buffer_mgr_init(struct cc_drvdata *drvdata);
  41
  42int cc_buffer_mgr_fini(struct cc_drvdata *drvdata);
  43
  44int 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
  49void cc_unmap_cipher_request(struct device *dev, void *ctx, unsigned int ivsize,
  50                             struct scatterlist *src, struct scatterlist *dst);
  51
  52int cc_map_aead_request(struct cc_drvdata *drvdata, struct aead_request *req);
  53
  54void cc_unmap_aead_request(struct device *dev, struct aead_request *req);
  55
  56int 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
  60int 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
  64void cc_unmap_hash_request(struct device *dev, void *ctx,
  65                           struct scatterlist *src, bool do_revert);
  66
  67void 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__*/
  71