// SPDX-License-Identifier: GPL-2.0-only
/* QLogic FCoE Offload Driver
 * Copyright (c) 2016-2018 Cavium Inc.
 */
#include "drv_scsi_fw_funcs.h"

#define SCSI_NUM_SGES_IN_CACHE 0x4

bool scsi_is_slow_sgl(u16 num_sges, bool small_mid_sge)
{
        return (num_sges > SCSI_NUM_SGES_SLOW_SGL_THR && small_mid_sge);
}

void init_scsi_sgl_context(struct scsi_sgl_params *ctx_sgl_params,
                           struct scsi_cached_sges *ctx_data_desc,
                           struct scsi_sgl_task_params *sgl_task_params)
{
        /* no need to check for sgl_task_params->sgl validity */
        u8 num_sges_to_init = sgl_task_params->num_sges >
                              SCSI_NUM_SGES_IN_CACHE ? SCSI_NUM_SGES_IN_CACHE :
                              sgl_task_params->num_sges;
        u8 sge_index;
        u32 val;

        val = cpu_to_le32(sgl_task_params->sgl_phys_addr.lo);
        ctx_sgl_params->sgl_addr.lo = val;
        val = cpu_to_le32(sgl_task_params->sgl_phys_addr.hi);
        ctx_sgl_params->sgl_addr.hi = val;
        val = cpu_to_le32(sgl_task_params->total_buffer_size);
        ctx_sgl_params->sgl_total_length = val;
        ctx_sgl_params->sgl_num_sges = cpu_to_le16(sgl_task_params->num_sges);

        for (sge_index = 0; sge_index < num_sges_to_init; sge_index++) {
                val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_addr.lo);
                ctx_data_desc->sge[sge_index].sge_addr.lo = val;
                val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_addr.hi);
                ctx_data_desc->sge[sge_index].sge_addr.hi = val;
                val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_len);
                ctx_data_desc->sge[sge_index].sge_len = val;
        }
}