200 lines
6.7 KiB
C
200 lines
6.7 KiB
C
/* QLogic FCoE Offload Driver
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* Copyright (c) 2016-2018 Cavium Inc.
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*
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* This software is available under the terms of the GNU General Public License
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* (GPL) Version 2, available from the file COPYING in the main directory of
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* this source tree.
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*/
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#include "drv_fcoe_fw_funcs.h"
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#include "drv_scsi_fw_funcs.h"
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#define FCOE_RX_ID (0xFFFFu)
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static inline void init_common_sqe(struct fcoe_task_params *task_params,
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enum fcoe_sqe_request_type request_type)
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{
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memset(task_params->sqe, 0, sizeof(*(task_params->sqe)));
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SET_FIELD(task_params->sqe->flags, FCOE_WQE_REQ_TYPE,
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request_type);
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task_params->sqe->task_id = task_params->itid;
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}
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int init_initiator_rw_fcoe_task(struct fcoe_task_params *task_params,
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struct scsi_sgl_task_params *sgl_task_params,
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struct regpair sense_data_buffer_phys_addr,
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u32 task_retry_id,
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u8 fcp_cmd_payload[32])
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{
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struct e4_fcoe_task_context *ctx = task_params->context;
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const u8 val_byte = ctx->ystorm_ag_context.byte0;
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struct e4_ustorm_fcoe_task_ag_ctx *u_ag_ctx;
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struct ystorm_fcoe_task_st_ctx *y_st_ctx;
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struct tstorm_fcoe_task_st_ctx *t_st_ctx;
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struct mstorm_fcoe_task_st_ctx *m_st_ctx;
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u32 io_size, val;
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bool slow_sgl;
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memset(ctx, 0, sizeof(*(ctx)));
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ctx->ystorm_ag_context.byte0 = val_byte;
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slow_sgl = scsi_is_slow_sgl(sgl_task_params->num_sges,
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sgl_task_params->small_mid_sge);
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io_size = (task_params->task_type == FCOE_TASK_TYPE_WRITE_INITIATOR ?
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task_params->tx_io_size : task_params->rx_io_size);
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/* Ystorm ctx */
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y_st_ctx = &ctx->ystorm_st_context;
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y_st_ctx->data_2_trns_rem = cpu_to_le32(io_size);
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y_st_ctx->task_rety_identifier = cpu_to_le32(task_retry_id);
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y_st_ctx->task_type = (u8)task_params->task_type;
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memcpy(&y_st_ctx->tx_info_union.fcp_cmd_payload,
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fcp_cmd_payload, sizeof(struct fcoe_fcp_cmd_payload));
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/* Tstorm ctx */
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t_st_ctx = &ctx->tstorm_st_context;
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t_st_ctx->read_only.dev_type = (u8)(task_params->is_tape_device == 1 ?
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FCOE_TASK_DEV_TYPE_TAPE :
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FCOE_TASK_DEV_TYPE_DISK);
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t_st_ctx->read_only.cid = cpu_to_le32(task_params->conn_cid);
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val = cpu_to_le32(task_params->cq_rss_number);
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t_st_ctx->read_only.glbl_q_num = val;
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t_st_ctx->read_only.fcp_cmd_trns_size = cpu_to_le32(io_size);
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t_st_ctx->read_only.task_type = (u8)task_params->task_type;
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SET_FIELD(t_st_ctx->read_write.flags,
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FCOE_TSTORM_FCOE_TASK_ST_CTX_READ_WRITE_EXP_FIRST_FRAME, 1);
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t_st_ctx->read_write.rx_id = cpu_to_le16(FCOE_RX_ID);
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/* Ustorm ctx */
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u_ag_ctx = &ctx->ustorm_ag_context;
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u_ag_ctx->global_cq_num = cpu_to_le32(task_params->cq_rss_number);
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/* Mstorm buffer for sense/rsp data placement */
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m_st_ctx = &ctx->mstorm_st_context;
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val = cpu_to_le32(sense_data_buffer_phys_addr.hi);
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m_st_ctx->rsp_buf_addr.hi = val;
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val = cpu_to_le32(sense_data_buffer_phys_addr.lo);
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m_st_ctx->rsp_buf_addr.lo = val;
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if (task_params->task_type == FCOE_TASK_TYPE_WRITE_INITIATOR) {
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/* Ystorm ctx */
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y_st_ctx->expect_first_xfer = 1;
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/* Set the amount of super SGEs. Can be up to 4. */
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SET_FIELD(y_st_ctx->sgl_mode,
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YSTORM_FCOE_TASK_ST_CTX_TX_SGL_MODE,
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(slow_sgl ? SCSI_TX_SLOW_SGL : SCSI_FAST_SGL));
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init_scsi_sgl_context(&y_st_ctx->sgl_params,
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&y_st_ctx->data_desc,
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sgl_task_params);
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/* Mstorm ctx */
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SET_FIELD(m_st_ctx->flags,
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MSTORM_FCOE_TASK_ST_CTX_TX_SGL_MODE,
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(slow_sgl ? SCSI_TX_SLOW_SGL : SCSI_FAST_SGL));
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m_st_ctx->sgl_params.sgl_num_sges =
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cpu_to_le16(sgl_task_params->num_sges);
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} else {
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/* Tstorm ctx */
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SET_FIELD(t_st_ctx->read_write.flags,
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FCOE_TSTORM_FCOE_TASK_ST_CTX_READ_WRITE_RX_SGL_MODE,
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(slow_sgl ? SCSI_TX_SLOW_SGL : SCSI_FAST_SGL));
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/* Mstorm ctx */
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m_st_ctx->data_2_trns_rem = cpu_to_le32(io_size);
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init_scsi_sgl_context(&m_st_ctx->sgl_params,
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&m_st_ctx->data_desc,
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sgl_task_params);
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}
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/* Init Sqe */
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init_common_sqe(task_params, SEND_FCOE_CMD);
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return 0;
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}
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int init_initiator_midpath_unsolicited_fcoe_task(
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struct fcoe_task_params *task_params,
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struct fcoe_tx_mid_path_params *mid_path_fc_header,
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struct scsi_sgl_task_params *tx_sgl_task_params,
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struct scsi_sgl_task_params *rx_sgl_task_params,
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u8 fw_to_place_fc_header)
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{
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struct e4_fcoe_task_context *ctx = task_params->context;
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const u8 val_byte = ctx->ystorm_ag_context.byte0;
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struct e4_ustorm_fcoe_task_ag_ctx *u_ag_ctx;
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struct ystorm_fcoe_task_st_ctx *y_st_ctx;
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struct tstorm_fcoe_task_st_ctx *t_st_ctx;
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struct mstorm_fcoe_task_st_ctx *m_st_ctx;
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u32 val;
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memset(ctx, 0, sizeof(*(ctx)));
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ctx->ystorm_ag_context.byte0 = val_byte;
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/* Init Ystorm */
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y_st_ctx = &ctx->ystorm_st_context;
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init_scsi_sgl_context(&y_st_ctx->sgl_params,
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&y_st_ctx->data_desc,
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tx_sgl_task_params);
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SET_FIELD(y_st_ctx->sgl_mode,
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YSTORM_FCOE_TASK_ST_CTX_TX_SGL_MODE, SCSI_FAST_SGL);
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y_st_ctx->data_2_trns_rem = cpu_to_le32(task_params->tx_io_size);
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y_st_ctx->task_type = (u8)task_params->task_type;
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memcpy(&y_st_ctx->tx_info_union.tx_params.mid_path,
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mid_path_fc_header, sizeof(struct fcoe_tx_mid_path_params));
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/* Init Mstorm */
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m_st_ctx = &ctx->mstorm_st_context;
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init_scsi_sgl_context(&m_st_ctx->sgl_params,
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&m_st_ctx->data_desc,
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rx_sgl_task_params);
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SET_FIELD(m_st_ctx->flags,
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MSTORM_FCOE_TASK_ST_CTX_MP_INCLUDE_FC_HEADER,
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fw_to_place_fc_header);
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m_st_ctx->data_2_trns_rem = cpu_to_le32(task_params->rx_io_size);
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/* Init Tstorm */
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t_st_ctx = &ctx->tstorm_st_context;
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t_st_ctx->read_only.cid = cpu_to_le32(task_params->conn_cid);
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val = cpu_to_le32(task_params->cq_rss_number);
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t_st_ctx->read_only.glbl_q_num = val;
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t_st_ctx->read_only.task_type = (u8)task_params->task_type;
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SET_FIELD(t_st_ctx->read_write.flags,
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FCOE_TSTORM_FCOE_TASK_ST_CTX_READ_WRITE_EXP_FIRST_FRAME, 1);
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t_st_ctx->read_write.rx_id = cpu_to_le16(FCOE_RX_ID);
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/* Init Ustorm */
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u_ag_ctx = &ctx->ustorm_ag_context;
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u_ag_ctx->global_cq_num = cpu_to_le32(task_params->cq_rss_number);
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/* Init SQE */
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init_common_sqe(task_params, SEND_FCOE_MIDPATH);
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task_params->sqe->additional_info_union.burst_length =
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tx_sgl_task_params->total_buffer_size;
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SET_FIELD(task_params->sqe->flags,
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FCOE_WQE_NUM_SGES, tx_sgl_task_params->num_sges);
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SET_FIELD(task_params->sqe->flags, FCOE_WQE_SGL_MODE,
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SCSI_FAST_SGL);
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return 0;
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}
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int init_initiator_abort_fcoe_task(struct fcoe_task_params *task_params)
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{
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init_common_sqe(task_params, SEND_FCOE_ABTS_REQUEST);
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return 0;
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}
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int init_initiator_cleanup_fcoe_task(struct fcoe_task_params *task_params)
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{
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init_common_sqe(task_params, FCOE_EXCHANGE_CLEANUP);
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return 0;
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}
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int init_initiator_sequence_recovery_fcoe_task(
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struct fcoe_task_params *task_params, u32 desired_offset)
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{
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init_common_sqe(task_params, FCOE_SEQUENCE_RECOVERY);
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task_params->sqe->additional_info_union.seq_rec_updated_offset =
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desired_offset;
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return 0;
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}
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