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        cc_sram_addr_t sram_addr;
  28        unsigned int nents; //sg nents
  29        unsigned int mlli_nents; //mlli nents might be different than the above
  30};
  31
  32struct mlli_params {
  33        struct dma_pool *curr_pool;
  34        u8 *mlli_virt_addr;
  35        dma_addr_t mlli_dma_addr;
  36        u32 mlli_len;
  37};
  38
  39int cc_buffer_mgr_init(struct cc_drvdata *drvdata);
  40
  41int cc_buffer_mgr_fini(struct cc_drvdata *drvdata);
  42
  43int cc_map_cipher_request(struct cc_drvdata *drvdata, void *ctx,
  44                          unsigned int ivsize, unsigned int nbytes,
  45                          void *info, struct scatterlist *src,
  46                          struct scatterlist *dst, gfp_t flags);
  47
  48void cc_unmap_cipher_request(struct device *dev, void *ctx, unsigned int ivsize,
  49                             struct scatterlist *src, struct scatterlist *dst);
  50
  51int cc_map_aead_request(struct cc_drvdata *drvdata, struct aead_request *req);
  52
  53void cc_unmap_aead_request(struct device *dev, struct aead_request *req);
  54
  55int cc_map_hash_request_final(struct cc_drvdata *drvdata, void *ctx,
  56                              struct scatterlist *src, unsigned int nbytes,
  57                              bool do_update, gfp_t flags);
  58
  59int cc_map_hash_request_update(struct cc_drvdata *drvdata, void *ctx,
  60                               struct scatterlist *src, unsigned int nbytes,
  61                               unsigned int block_size, gfp_t flags);
  62
  63void cc_unmap_hash_request(struct device *dev, void *ctx,
  64                           struct scatterlist *src, bool do_revert);
  65
  66void cc_copy_sg_portion(struct device *dev, u8 *dest, struct scatterlist *sg,
  67                        u32 to_skip, u32 end, enum cc_sg_cpy_direct direct);
  68
  69#endif /*__BUFFER_MGR_H__*/
  70