qat_bl.h

 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