/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright(c) 2014 - 2022 Intel Corporation */
#ifndef QAT_BL_H
#define QAT_BL_H
#include <linux/crypto.h>
#include <linux/scatterlist.h>
#include <linux/types.h>

#define QAT_MAX_BUFF_DESC       4

struct qat_alg_buf {
        u32 len;
        u32 resrvd;
        u64 addr;
} __packed;

struct qat_alg_buf_list {
        /* New members must be added within the __struct_group() macro below. */
        __struct_group(qat_alg_buf_list_hdr, hdr, __packed,
                u64 resrvd;
                u32 num_bufs;
                u32 num_mapped_bufs;
        );
        struct qat_alg_buf buffers[];
} __packed;
static_assert(offsetof(struct qat_alg_buf_list, buffers) == sizeof(struct qat_alg_buf_list_hdr),
              "struct member likely outside of __struct_group()");

struct qat_alg_fixed_buf_list {
        struct qat_alg_buf_list_hdr sgl_hdr;
        struct qat_alg_buf descriptors[QAT_MAX_BUFF_DESC];
} __packed __aligned(64);

struct qat_request_buffs {
        struct qat_alg_buf_list *bl;
        dma_addr_t blp;
        struct qat_alg_buf_list *blout;
        dma_addr_t bloutp;
        size_t sz;
        size_t sz_out;
        bool sgl_src_valid;
        bool sgl_dst_valid;
        struct qat_alg_fixed_buf_list sgl_src;
        struct qat_alg_fixed_buf_list sgl_dst;
};

struct qat_sgl_to_bufl_params {
        dma_addr_t extra_dst_buff;
        size_t sz_extra_dst_buff;
        unsigned int sskip;
        unsigned int dskip;
};

void qat_bl_free_bufl(struct adf_accel_dev *accel_dev,
                      struct qat_request_buffs *buf);
int qat_bl_sgl_to_bufl(struct adf_accel_dev *accel_dev,
                       struct scatterlist *sgl,
                       struct scatterlist *sglout,
                       struct qat_request_buffs *buf,
                       struct qat_sgl_to_bufl_params *params,
                       gfp_t flags);

static inline gfp_t qat_algs_alloc_flags(struct crypto_async_request *req)
{
        return req->flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : GFP_ATOMIC;
}

#endif