1be086e7cSMintz, Yuval /* QLogic FCoE Offload Driver 2be086e7cSMintz, Yuval * Copyright (c) 2016 Cavium Inc. 3be086e7cSMintz, Yuval * 4be086e7cSMintz, Yuval * This software is available under the terms of the GNU General Public License 5be086e7cSMintz, Yuval * (GPL) Version 2, available from the file COPYING in the main directory of 6be086e7cSMintz, Yuval * this source tree. 7be086e7cSMintz, Yuval */ 8be086e7cSMintz, Yuval #include "drv_fcoe_fw_funcs.h" 9be086e7cSMintz, Yuval #include "drv_scsi_fw_funcs.h" 10be086e7cSMintz, Yuval 11be086e7cSMintz, Yuval #define FCOE_RX_ID ((u32)0x0000FFFF) 12be086e7cSMintz, Yuval 13be086e7cSMintz, Yuval static inline void init_common_sqe(struct fcoe_task_params *task_params, 14be086e7cSMintz, Yuval enum fcoe_sqe_request_type request_type) 15be086e7cSMintz, Yuval { 16be086e7cSMintz, Yuval memset(task_params->sqe, 0, sizeof(*(task_params->sqe))); 17be086e7cSMintz, Yuval SET_FIELD(task_params->sqe->flags, FCOE_WQE_REQ_TYPE, 18be086e7cSMintz, Yuval request_type); 19be086e7cSMintz, Yuval task_params->sqe->task_id = task_params->itid; 20be086e7cSMintz, Yuval } 21be086e7cSMintz, Yuval 22be086e7cSMintz, Yuval int init_initiator_rw_fcoe_task(struct fcoe_task_params *task_params, 23be086e7cSMintz, Yuval struct scsi_sgl_task_params *sgl_task_params, 24be086e7cSMintz, Yuval struct regpair sense_data_buffer_phys_addr, 25be086e7cSMintz, Yuval u32 task_retry_id, 26be086e7cSMintz, Yuval u8 fcp_cmd_payload[32]) 27be086e7cSMintz, Yuval { 28be086e7cSMintz, Yuval struct fcoe_task_context *ctx = task_params->context; 29be086e7cSMintz, Yuval struct ystorm_fcoe_task_st_ctx *y_st_ctx; 30be086e7cSMintz, Yuval struct tstorm_fcoe_task_st_ctx *t_st_ctx; 31be086e7cSMintz, Yuval struct ustorm_fcoe_task_ag_ctx *u_ag_ctx; 32be086e7cSMintz, Yuval struct mstorm_fcoe_task_st_ctx *m_st_ctx; 33be086e7cSMintz, Yuval u32 io_size, val; 34be086e7cSMintz, Yuval bool slow_sgl; 35be086e7cSMintz, Yuval 36be086e7cSMintz, Yuval memset(ctx, 0, sizeof(*(ctx))); 37be086e7cSMintz, Yuval slow_sgl = scsi_is_slow_sgl(sgl_task_params->num_sges, 38be086e7cSMintz, Yuval sgl_task_params->small_mid_sge); 39be086e7cSMintz, Yuval io_size = (task_params->task_type == FCOE_TASK_TYPE_WRITE_INITIATOR ? 40be086e7cSMintz, Yuval task_params->tx_io_size : task_params->rx_io_size); 41be086e7cSMintz, Yuval 42be086e7cSMintz, Yuval /* Ystorm ctx */ 43be086e7cSMintz, Yuval y_st_ctx = &ctx->ystorm_st_context; 44be086e7cSMintz, Yuval y_st_ctx->data_2_trns_rem = cpu_to_le32(io_size); 45be086e7cSMintz, Yuval y_st_ctx->task_rety_identifier = cpu_to_le32(task_retry_id); 46be086e7cSMintz, Yuval y_st_ctx->task_type = task_params->task_type; 47be086e7cSMintz, Yuval memcpy(&y_st_ctx->tx_info_union.fcp_cmd_payload, 48be086e7cSMintz, Yuval fcp_cmd_payload, sizeof(struct fcoe_fcp_cmd_payload)); 49be086e7cSMintz, Yuval 50be086e7cSMintz, Yuval /* Tstorm ctx */ 51be086e7cSMintz, Yuval t_st_ctx = &ctx->tstorm_st_context; 52be086e7cSMintz, Yuval t_st_ctx->read_only.dev_type = (task_params->is_tape_device == 1 ? 53be086e7cSMintz, Yuval FCOE_TASK_DEV_TYPE_TAPE : 54be086e7cSMintz, Yuval FCOE_TASK_DEV_TYPE_DISK); 55be086e7cSMintz, Yuval t_st_ctx->read_only.cid = cpu_to_le32(task_params->conn_cid); 56be086e7cSMintz, Yuval val = cpu_to_le32(task_params->cq_rss_number); 57be086e7cSMintz, Yuval t_st_ctx->read_only.glbl_q_num = val; 58be086e7cSMintz, Yuval t_st_ctx->read_only.fcp_cmd_trns_size = cpu_to_le32(io_size); 59be086e7cSMintz, Yuval t_st_ctx->read_only.task_type = task_params->task_type; 60be086e7cSMintz, Yuval SET_FIELD(t_st_ctx->read_write.flags, 61be086e7cSMintz, Yuval FCOE_TSTORM_FCOE_TASK_ST_CTX_READ_WRITE_EXP_FIRST_FRAME, 1); 62be086e7cSMintz, Yuval t_st_ctx->read_write.rx_id = cpu_to_le32(FCOE_RX_ID); 63be086e7cSMintz, Yuval 64be086e7cSMintz, Yuval /* Ustorm ctx */ 65be086e7cSMintz, Yuval u_ag_ctx = &ctx->ustorm_ag_context; 66be086e7cSMintz, Yuval u_ag_ctx->global_cq_num = cpu_to_le32(task_params->cq_rss_number); 67be086e7cSMintz, Yuval 68be086e7cSMintz, Yuval /* Mstorm buffer for sense/rsp data placement */ 69be086e7cSMintz, Yuval m_st_ctx = &ctx->mstorm_st_context; 70be086e7cSMintz, Yuval val = cpu_to_le32(sense_data_buffer_phys_addr.hi); 71be086e7cSMintz, Yuval m_st_ctx->rsp_buf_addr.hi = val; 72be086e7cSMintz, Yuval val = cpu_to_le32(sense_data_buffer_phys_addr.lo); 73be086e7cSMintz, Yuval m_st_ctx->rsp_buf_addr.lo = val; 74be086e7cSMintz, Yuval 75be086e7cSMintz, Yuval if (task_params->task_type == FCOE_TASK_TYPE_WRITE_INITIATOR) { 76be086e7cSMintz, Yuval /* Ystorm ctx */ 77be086e7cSMintz, Yuval y_st_ctx->expect_first_xfer = 1; 78be086e7cSMintz, Yuval 79be086e7cSMintz, Yuval /* Set the amount of super SGEs. Can be up to 4. */ 80be086e7cSMintz, Yuval SET_FIELD(y_st_ctx->sgl_mode, 81be086e7cSMintz, Yuval YSTORM_FCOE_TASK_ST_CTX_TX_SGL_MODE, 82be086e7cSMintz, Yuval (slow_sgl ? SCSI_TX_SLOW_SGL : SCSI_FAST_SGL)); 83be086e7cSMintz, Yuval init_scsi_sgl_context(&y_st_ctx->sgl_params, 84be086e7cSMintz, Yuval &y_st_ctx->data_desc, 85be086e7cSMintz, Yuval sgl_task_params); 86be086e7cSMintz, Yuval 87be086e7cSMintz, Yuval /* Mstorm ctx */ 88be086e7cSMintz, Yuval SET_FIELD(m_st_ctx->flags, 89be086e7cSMintz, Yuval MSTORM_FCOE_TASK_ST_CTX_TX_SGL_MODE, 90be086e7cSMintz, Yuval (slow_sgl ? SCSI_TX_SLOW_SGL : SCSI_FAST_SGL)); 91be086e7cSMintz, Yuval } else { 92be086e7cSMintz, Yuval /* Tstorm ctx */ 93be086e7cSMintz, Yuval SET_FIELD(t_st_ctx->read_write.flags, 94be086e7cSMintz, Yuval FCOE_TSTORM_FCOE_TASK_ST_CTX_READ_WRITE_RX_SGL_MODE, 95be086e7cSMintz, Yuval (slow_sgl ? SCSI_TX_SLOW_SGL : SCSI_FAST_SGL)); 96be086e7cSMintz, Yuval 97be086e7cSMintz, Yuval /* Mstorm ctx */ 98be086e7cSMintz, Yuval m_st_ctx->data_2_trns_rem = cpu_to_le32(io_size); 99be086e7cSMintz, Yuval init_scsi_sgl_context(&m_st_ctx->sgl_params, 100be086e7cSMintz, Yuval &m_st_ctx->data_desc, 101be086e7cSMintz, Yuval sgl_task_params); 102be086e7cSMintz, Yuval } 103be086e7cSMintz, Yuval 104be086e7cSMintz, Yuval init_common_sqe(task_params, SEND_FCOE_CMD); 105be086e7cSMintz, Yuval return 0; 106be086e7cSMintz, Yuval } 107be086e7cSMintz, Yuval 108be086e7cSMintz, Yuval int init_initiator_midpath_unsolicited_fcoe_task( 109be086e7cSMintz, Yuval struct fcoe_task_params *task_params, 110be086e7cSMintz, Yuval struct fcoe_tx_mid_path_params *mid_path_fc_header, 111be086e7cSMintz, Yuval struct scsi_sgl_task_params *tx_sgl_task_params, 112be086e7cSMintz, Yuval struct scsi_sgl_task_params *rx_sgl_task_params, 113be086e7cSMintz, Yuval u8 fw_to_place_fc_header) 114be086e7cSMintz, Yuval { 115be086e7cSMintz, Yuval struct fcoe_task_context *ctx = task_params->context; 116be086e7cSMintz, Yuval struct ystorm_fcoe_task_st_ctx *y_st_ctx; 117be086e7cSMintz, Yuval struct tstorm_fcoe_task_st_ctx *t_st_ctx; 118be086e7cSMintz, Yuval struct ustorm_fcoe_task_ag_ctx *u_ag_ctx; 119be086e7cSMintz, Yuval struct mstorm_fcoe_task_st_ctx *m_st_ctx; 120be086e7cSMintz, Yuval u32 val; 121be086e7cSMintz, Yuval 122be086e7cSMintz, Yuval memset(ctx, 0, sizeof(*(ctx))); 123be086e7cSMintz, Yuval 124be086e7cSMintz, Yuval /* Init Ystorm */ 125be086e7cSMintz, Yuval y_st_ctx = &ctx->ystorm_st_context; 126be086e7cSMintz, Yuval init_scsi_sgl_context(&y_st_ctx->sgl_params, 127be086e7cSMintz, Yuval &y_st_ctx->data_desc, 128be086e7cSMintz, Yuval tx_sgl_task_params); 129be086e7cSMintz, Yuval SET_FIELD(y_st_ctx->sgl_mode, 130be086e7cSMintz, Yuval YSTORM_FCOE_TASK_ST_CTX_TX_SGL_MODE, SCSI_FAST_SGL); 131be086e7cSMintz, Yuval y_st_ctx->data_2_trns_rem = cpu_to_le32(task_params->tx_io_size); 132be086e7cSMintz, Yuval y_st_ctx->task_type = task_params->task_type; 133be086e7cSMintz, Yuval memcpy(&y_st_ctx->tx_info_union.tx_params.mid_path, 134be086e7cSMintz, Yuval mid_path_fc_header, sizeof(struct fcoe_tx_mid_path_params)); 135be086e7cSMintz, Yuval 136be086e7cSMintz, Yuval /* Init Mstorm */ 137be086e7cSMintz, Yuval m_st_ctx = &ctx->mstorm_st_context; 138be086e7cSMintz, Yuval init_scsi_sgl_context(&m_st_ctx->sgl_params, 139be086e7cSMintz, Yuval &m_st_ctx->data_desc, 140be086e7cSMintz, Yuval rx_sgl_task_params); 141be086e7cSMintz, Yuval SET_FIELD(m_st_ctx->flags, 142be086e7cSMintz, Yuval MSTORM_FCOE_TASK_ST_CTX_MP_INCLUDE_FC_HEADER, 143be086e7cSMintz, Yuval fw_to_place_fc_header); 144be086e7cSMintz, Yuval m_st_ctx->data_2_trns_rem = cpu_to_le32(task_params->rx_io_size); 145be086e7cSMintz, Yuval 146be086e7cSMintz, Yuval /* Init Tstorm */ 147be086e7cSMintz, Yuval t_st_ctx = &ctx->tstorm_st_context; 148be086e7cSMintz, Yuval t_st_ctx->read_only.cid = cpu_to_le32(task_params->conn_cid); 149be086e7cSMintz, Yuval val = cpu_to_le32(task_params->cq_rss_number); 150be086e7cSMintz, Yuval t_st_ctx->read_only.glbl_q_num = val; 151be086e7cSMintz, Yuval t_st_ctx->read_only.task_type = task_params->task_type; 152be086e7cSMintz, Yuval SET_FIELD(t_st_ctx->read_write.flags, 153be086e7cSMintz, Yuval FCOE_TSTORM_FCOE_TASK_ST_CTX_READ_WRITE_EXP_FIRST_FRAME, 1); 154be086e7cSMintz, Yuval t_st_ctx->read_write.rx_id = cpu_to_le32(FCOE_RX_ID); 155be086e7cSMintz, Yuval 156be086e7cSMintz, Yuval /* Init Ustorm */ 157be086e7cSMintz, Yuval u_ag_ctx = &ctx->ustorm_ag_context; 158be086e7cSMintz, Yuval u_ag_ctx->global_cq_num = cpu_to_le32(task_params->cq_rss_number); 159be086e7cSMintz, Yuval 160be086e7cSMintz, Yuval /* Init SQE */ 161be086e7cSMintz, Yuval init_common_sqe(task_params, SEND_FCOE_MIDPATH); 162be086e7cSMintz, Yuval task_params->sqe->additional_info_union.burst_length = 163be086e7cSMintz, Yuval tx_sgl_task_params->total_buffer_size; 164be086e7cSMintz, Yuval SET_FIELD(task_params->sqe->flags, 165be086e7cSMintz, Yuval FCOE_WQE_NUM_SGES, tx_sgl_task_params->num_sges); 166be086e7cSMintz, Yuval SET_FIELD(task_params->sqe->flags, FCOE_WQE_SGL_MODE, 167be086e7cSMintz, Yuval SCSI_FAST_SGL); 168be086e7cSMintz, Yuval 169be086e7cSMintz, Yuval return 0; 170be086e7cSMintz, Yuval } 171be086e7cSMintz, Yuval 172be086e7cSMintz, Yuval int init_initiator_abort_fcoe_task(struct fcoe_task_params *task_params) 173be086e7cSMintz, Yuval { 174be086e7cSMintz, Yuval init_common_sqe(task_params, SEND_FCOE_ABTS_REQUEST); 175be086e7cSMintz, Yuval return 0; 176be086e7cSMintz, Yuval } 177be086e7cSMintz, Yuval 178be086e7cSMintz, Yuval int init_initiator_cleanup_fcoe_task(struct fcoe_task_params *task_params) 179be086e7cSMintz, Yuval { 180be086e7cSMintz, Yuval init_common_sqe(task_params, FCOE_EXCHANGE_CLEANUP); 181be086e7cSMintz, Yuval return 0; 182be086e7cSMintz, Yuval } 183be086e7cSMintz, Yuval 184be086e7cSMintz, Yuval int init_initiator_sequence_recovery_fcoe_task( 185be086e7cSMintz, Yuval struct fcoe_task_params *task_params, u32 off) 186be086e7cSMintz, Yuval { 187be086e7cSMintz, Yuval init_common_sqe(task_params, FCOE_SEQUENCE_RECOVERY); 188be086e7cSMintz, Yuval task_params->sqe->additional_info_union.seq_rec_updated_offset = off; 189be086e7cSMintz, Yuval return 0; 190be086e7cSMintz, Yuval } 191