1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only 2*4882a593Smuzhiyun /* QLogic FCoE Offload Driver 3*4882a593Smuzhiyun * Copyright (c) 2016-2018 Cavium Inc. 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun #include "drv_scsi_fw_funcs.h" 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #define SCSI_NUM_SGES_IN_CACHE 0x4 8*4882a593Smuzhiyun scsi_is_slow_sgl(u16 num_sges,bool small_mid_sge)9*4882a593Smuzhiyunbool scsi_is_slow_sgl(u16 num_sges, bool small_mid_sge) 10*4882a593Smuzhiyun { 11*4882a593Smuzhiyun return (num_sges > SCSI_NUM_SGES_SLOW_SGL_THR && small_mid_sge); 12*4882a593Smuzhiyun } 13*4882a593Smuzhiyun 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)14*4882a593Smuzhiyunvoid init_scsi_sgl_context(struct scsi_sgl_params *ctx_sgl_params, 15*4882a593Smuzhiyun struct scsi_cached_sges *ctx_data_desc, 16*4882a593Smuzhiyun struct scsi_sgl_task_params *sgl_task_params) 17*4882a593Smuzhiyun { 18*4882a593Smuzhiyun /* no need to check for sgl_task_params->sgl validity */ 19*4882a593Smuzhiyun u8 num_sges_to_init = sgl_task_params->num_sges > 20*4882a593Smuzhiyun SCSI_NUM_SGES_IN_CACHE ? SCSI_NUM_SGES_IN_CACHE : 21*4882a593Smuzhiyun sgl_task_params->num_sges; 22*4882a593Smuzhiyun u8 sge_index; 23*4882a593Smuzhiyun u32 val; 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun val = cpu_to_le32(sgl_task_params->sgl_phys_addr.lo); 26*4882a593Smuzhiyun ctx_sgl_params->sgl_addr.lo = val; 27*4882a593Smuzhiyun val = cpu_to_le32(sgl_task_params->sgl_phys_addr.hi); 28*4882a593Smuzhiyun ctx_sgl_params->sgl_addr.hi = val; 29*4882a593Smuzhiyun val = cpu_to_le32(sgl_task_params->total_buffer_size); 30*4882a593Smuzhiyun ctx_sgl_params->sgl_total_length = val; 31*4882a593Smuzhiyun ctx_sgl_params->sgl_num_sges = cpu_to_le16(sgl_task_params->num_sges); 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun for (sge_index = 0; sge_index < num_sges_to_init; sge_index++) { 34*4882a593Smuzhiyun val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_addr.lo); 35*4882a593Smuzhiyun ctx_data_desc->sge[sge_index].sge_addr.lo = val; 36*4882a593Smuzhiyun val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_addr.hi); 37*4882a593Smuzhiyun ctx_data_desc->sge[sge_index].sge_addr.hi = val; 38*4882a593Smuzhiyun val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_len); 39*4882a593Smuzhiyun ctx_data_desc->sge[sge_index].sge_len = val; 40*4882a593Smuzhiyun } 41*4882a593Smuzhiyun } 42