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1// SPDX-License-Identifier: GPL-2.0-only2/* QLogic FCoE Offload Driver3 * Copyright (c) 2016-2018 Cavium Inc.4 */5#include "drv_fcoe_fw_funcs.h"6#include "drv_scsi_fw_funcs.h"7 8#define FCOE_RX_ID (0xFFFFu)9 10static inline void init_common_sqe(struct fcoe_task_params *task_params,11 enum fcoe_sqe_request_type request_type)12{13 memset(task_params->sqe, 0, sizeof(*(task_params->sqe)));14 SET_FIELD(task_params->sqe->flags, FCOE_WQE_REQ_TYPE,15 request_type);16 task_params->sqe->task_id = task_params->itid;17}18 19int init_initiator_rw_fcoe_task(struct fcoe_task_params *task_params,20 struct scsi_sgl_task_params *sgl_task_params,21 struct regpair sense_data_buffer_phys_addr,22 u32 task_retry_id,23 u8 fcp_cmd_payload[32])24{25 struct fcoe_task_context *ctx = task_params->context;26 const u8 val_byte = ctx->ystorm_ag_context.byte0;27 struct ustorm_fcoe_task_ag_ctx *u_ag_ctx;28 struct ystorm_fcoe_task_st_ctx *y_st_ctx;29 struct tstorm_fcoe_task_st_ctx *t_st_ctx;30 struct mstorm_fcoe_task_st_ctx *m_st_ctx;31 u32 io_size, val;32 bool slow_sgl;33 34 memset(ctx, 0, sizeof(*(ctx)));35 ctx->ystorm_ag_context.byte0 = val_byte;36 slow_sgl = scsi_is_slow_sgl(sgl_task_params->num_sges,37 sgl_task_params->small_mid_sge);38 io_size = (task_params->task_type == FCOE_TASK_TYPE_WRITE_INITIATOR ?39 task_params->tx_io_size : task_params->rx_io_size);40 41 /* Ystorm ctx */42 y_st_ctx = &ctx->ystorm_st_context;43 y_st_ctx->data_2_trns_rem = cpu_to_le32(io_size);44 y_st_ctx->task_rety_identifier = cpu_to_le32(task_retry_id);45 y_st_ctx->task_type = (u8)task_params->task_type;46 memcpy(&y_st_ctx->tx_info_union.fcp_cmd_payload,47 fcp_cmd_payload, sizeof(struct fcoe_fcp_cmd_payload));48 49 /* Tstorm ctx */50 t_st_ctx = &ctx->tstorm_st_context;51 t_st_ctx->read_only.dev_type = (u8)(task_params->is_tape_device == 1 ?52 FCOE_TASK_DEV_TYPE_TAPE :53 FCOE_TASK_DEV_TYPE_DISK);54 t_st_ctx->read_only.cid = cpu_to_le32(task_params->conn_cid);55 val = cpu_to_le32(task_params->cq_rss_number);56 t_st_ctx->read_only.glbl_q_num = val;57 t_st_ctx->read_only.fcp_cmd_trns_size = cpu_to_le32(io_size);58 t_st_ctx->read_only.task_type = (u8)task_params->task_type;59 SET_FIELD(t_st_ctx->read_write.flags,60 FCOE_TSTORM_FCOE_TASK_ST_CTX_READ_WRITE_EXP_FIRST_FRAME, 1);61 t_st_ctx->read_write.rx_id = cpu_to_le16(FCOE_RX_ID);62 63 /* Ustorm ctx */64 u_ag_ctx = &ctx->ustorm_ag_context;65 u_ag_ctx->global_cq_num = cpu_to_le32(task_params->cq_rss_number);66 67 /* Mstorm buffer for sense/rsp data placement */68 m_st_ctx = &ctx->mstorm_st_context;69 val = cpu_to_le32(sense_data_buffer_phys_addr.hi);70 m_st_ctx->rsp_buf_addr.hi = val;71 val = cpu_to_le32(sense_data_buffer_phys_addr.lo);72 m_st_ctx->rsp_buf_addr.lo = val;73 74 if (task_params->task_type == FCOE_TASK_TYPE_WRITE_INITIATOR) {75 /* Ystorm ctx */76 y_st_ctx->expect_first_xfer = 1;77 78 /* Set the amount of super SGEs. Can be up to 4. */79 SET_FIELD(y_st_ctx->sgl_mode,80 YSTORM_FCOE_TASK_ST_CTX_TX_SGL_MODE,81 (slow_sgl ? SCSI_TX_SLOW_SGL : SCSI_FAST_SGL));82 init_scsi_sgl_context(&y_st_ctx->sgl_params,83 &y_st_ctx->data_desc,84 sgl_task_params);85 86 /* Mstorm ctx */87 SET_FIELD(m_st_ctx->flags,88 MSTORM_FCOE_TASK_ST_CTX_TX_SGL_MODE,89 (slow_sgl ? SCSI_TX_SLOW_SGL : SCSI_FAST_SGL));90 m_st_ctx->sgl_params.sgl_num_sges =91 cpu_to_le16(sgl_task_params->num_sges);92 } else {93 /* Tstorm ctx */94 SET_FIELD(t_st_ctx->read_write.flags,95 FCOE_TSTORM_FCOE_TASK_ST_CTX_READ_WRITE_RX_SGL_MODE,96 (slow_sgl ? SCSI_TX_SLOW_SGL : SCSI_FAST_SGL));97 98 /* Mstorm ctx */99 m_st_ctx->data_2_trns_rem = cpu_to_le32(io_size);100 init_scsi_sgl_context(&m_st_ctx->sgl_params,101 &m_st_ctx->data_desc,102 sgl_task_params);103 }104 105 /* Init Sqe */106 init_common_sqe(task_params, SEND_FCOE_CMD);107 108 return 0;109}110 111int init_initiator_midpath_unsolicited_fcoe_task(112 struct fcoe_task_params *task_params,113 struct fcoe_tx_mid_path_params *mid_path_fc_header,114 struct scsi_sgl_task_params *tx_sgl_task_params,115 struct scsi_sgl_task_params *rx_sgl_task_params,116 u8 fw_to_place_fc_header)117{118 struct fcoe_task_context *ctx = task_params->context;119 const u8 val_byte = ctx->ystorm_ag_context.byte0;120 struct ustorm_fcoe_task_ag_ctx *u_ag_ctx;121 struct ystorm_fcoe_task_st_ctx *y_st_ctx;122 struct tstorm_fcoe_task_st_ctx *t_st_ctx;123 struct mstorm_fcoe_task_st_ctx *m_st_ctx;124 u32 val;125 126 memset(ctx, 0, sizeof(*(ctx)));127 ctx->ystorm_ag_context.byte0 = val_byte;128 129 /* Init Ystorm */130 y_st_ctx = &ctx->ystorm_st_context;131 init_scsi_sgl_context(&y_st_ctx->sgl_params,132 &y_st_ctx->data_desc,133 tx_sgl_task_params);134 SET_FIELD(y_st_ctx->sgl_mode,135 YSTORM_FCOE_TASK_ST_CTX_TX_SGL_MODE, SCSI_FAST_SGL);136 y_st_ctx->data_2_trns_rem = cpu_to_le32(task_params->tx_io_size);137 y_st_ctx->task_type = (u8)task_params->task_type;138 memcpy(&y_st_ctx->tx_info_union.tx_params.mid_path,139 mid_path_fc_header, sizeof(struct fcoe_tx_mid_path_params));140 141 /* Init Mstorm */142 m_st_ctx = &ctx->mstorm_st_context;143 init_scsi_sgl_context(&m_st_ctx->sgl_params,144 &m_st_ctx->data_desc,145 rx_sgl_task_params);146 SET_FIELD(m_st_ctx->flags,147 MSTORM_FCOE_TASK_ST_CTX_MP_INCLUDE_FC_HEADER,148 fw_to_place_fc_header);149 m_st_ctx->data_2_trns_rem = cpu_to_le32(task_params->rx_io_size);150 151 /* Init Tstorm */152 t_st_ctx = &ctx->tstorm_st_context;153 t_st_ctx->read_only.cid = cpu_to_le32(task_params->conn_cid);154 val = cpu_to_le32(task_params->cq_rss_number);155 t_st_ctx->read_only.glbl_q_num = val;156 t_st_ctx->read_only.task_type = (u8)task_params->task_type;157 SET_FIELD(t_st_ctx->read_write.flags,158 FCOE_TSTORM_FCOE_TASK_ST_CTX_READ_WRITE_EXP_FIRST_FRAME, 1);159 t_st_ctx->read_write.rx_id = cpu_to_le16(FCOE_RX_ID);160 161 /* Init Ustorm */162 u_ag_ctx = &ctx->ustorm_ag_context;163 u_ag_ctx->global_cq_num = cpu_to_le32(task_params->cq_rss_number);164 165 /* Init SQE */166 init_common_sqe(task_params, SEND_FCOE_MIDPATH);167 task_params->sqe->additional_info_union.burst_length =168 tx_sgl_task_params->total_buffer_size;169 SET_FIELD(task_params->sqe->flags,170 FCOE_WQE_NUM_SGES, tx_sgl_task_params->num_sges);171 SET_FIELD(task_params->sqe->flags, FCOE_WQE_SGL_MODE,172 SCSI_FAST_SGL);173 174 return 0;175}176 177int init_initiator_abort_fcoe_task(struct fcoe_task_params *task_params)178{179 init_common_sqe(task_params, SEND_FCOE_ABTS_REQUEST);180 return 0;181}182 183int init_initiator_cleanup_fcoe_task(struct fcoe_task_params *task_params)184{185 init_common_sqe(task_params, FCOE_EXCHANGE_CLEANUP);186 return 0;187}188 189int init_initiator_sequence_recovery_fcoe_task(190 struct fcoe_task_params *task_params, u32 desired_offset)191{192 init_common_sqe(task_params, FCOE_SEQUENCE_RECOVERY);193 task_params->sqe->additional_info_union.seq_rec_updated_offset =194 desired_offset;195 return 0;196}197