tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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
69void cc_zero_sgl(struct scatterlist *sgl, u32 data_len);
70
71#endif /*__BUFFER_MGR_H__*/