1/* SPDX-License-Identifier: GPL-2.0-only */
2/* Copyright(c) 2014 - 2022 Intel Corporation */
3#ifndef QAT_BL_H
4#define QAT_BL_H
5#include <linux/crypto.h>
6#include <linux/scatterlist.h>
7#include <linux/types.h>
8
9#define QAT_MAX_BUFF_DESC 4
10
11struct qat_alg_buf {
12 u32 len;
13 u32 resrvd;
14 u64 addr;
15} __packed;
16
17struct qat_alg_buf_list {
18 /* New members must be added within the __struct_group() macro below. */
19 __struct_group(qat_alg_buf_list_hdr, hdr, __packed,
20 u64 resrvd;
21 u32 num_bufs;
22 u32 num_mapped_bufs;
23 );
24 struct qat_alg_buf buffers[];
25} __packed;
26static_assert(offsetof(struct qat_alg_buf_list, buffers) == sizeof(struct qat_alg_buf_list_hdr),
27 "struct member likely outside of __struct_group()");
28
29struct qat_alg_fixed_buf_list {
30 struct qat_alg_buf_list_hdr sgl_hdr;
31 struct qat_alg_buf descriptors[QAT_MAX_BUFF_DESC];
32} __packed __aligned(64);
33
34struct qat_request_buffs {
35 struct qat_alg_buf_list *bl;
36 dma_addr_t blp;
37 struct qat_alg_buf_list *blout;
38 dma_addr_t bloutp;
39 size_t sz;
40 size_t sz_out;
41 bool sgl_src_valid;
42 bool sgl_dst_valid;
43 struct qat_alg_fixed_buf_list sgl_src;
44 struct qat_alg_fixed_buf_list sgl_dst;
45};
46
47struct qat_sgl_to_bufl_params {
48 dma_addr_t extra_dst_buff;
49 size_t sz_extra_dst_buff;
50 unsigned int sskip;
51 unsigned int dskip;
52};
53
54void qat_bl_free_bufl(struct adf_accel_dev *accel_dev,
55 struct qat_request_buffs *buf);
56int qat_bl_sgl_to_bufl(struct adf_accel_dev *accel_dev,
57 struct scatterlist *sgl,
58 struct scatterlist *sglout,
59 struct qat_request_buffs *buf,
60 struct qat_sgl_to_bufl_params *params,
61 gfp_t flags);
62
63static inline gfp_t qat_algs_alloc_flags(struct crypto_async_request *req)
64{
65 return req->flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : GFP_ATOMIC;
66}
67
68#endif
69

source code of linux/drivers/crypto/intel/qat/qat_common/qat_bl.h