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/* QLogic FCoE Offload Driver
* Copyright (c) 2016-2017 Cavium Inc.
*
* This software is available under the terms of the GNU General Public License
* (GPL) Version 2, available from the file COPYING in the main directory of
* this source tree.
*/
#include "drv_fcoe_fw_funcs.h"
#include "drv_scsi_fw_funcs.h"
#define FCOE_RX_ID (0xFFFFu)
static inline void init_common_sqe(struct fcoe_task_params *task_params,
enum fcoe_sqe_request_type request_type)
{
memset(task_params->sqe, 0, sizeof(*(task_params->sqe)));
SET_FIELD(task_params->sqe->flags, FCOE_WQE_REQ_TYPE,
request_type);
task_params->sqe->task_id = task_params->itid;
}
int init_initiator_rw_fcoe_task(struct fcoe_task_params *task_params,
struct scsi_sgl_task_params *sgl_task_params,
struct regpair sense_data_buffer_phys_addr,
u32 task_retry_id,
u8 fcp_cmd_payload[32])
{
struct fcoe_task_context *ctx = task_params->context;
struct ystorm_fcoe_task_st_ctx *y_st_ctx;
struct tstorm_fcoe_task_st_ctx *t_st_ctx;
struct ustorm_fcoe_task_ag_ctx *u_ag_ctx;
struct mstorm_fcoe_task_st_ctx *m_st_ctx;
u32 io_size, val;
bool slow_sgl;
memset(ctx, 0, sizeof(*(ctx)));
slow_sgl = scsi_is_slow_sgl(sgl_task_params->num_sges,
sgl_task_params->small_mid_sge);
io_size = (task_params->task_type == FCOE_TASK_TYPE_WRITE_INITIATOR ?
task_params->tx_io_size : task_params->rx_io_size);
/* Ystorm ctx */
y_st_ctx = &ctx->ystorm_st_context;
y_st_ctx->data_2_trns_rem = cpu_to_le32(io_size);
y_st_ctx->task_rety_identifier = cpu_to_le32(task_retry_id);
y_st_ctx->task_type = task_params->task_type;
memcpy(&y_st_ctx->tx_info_union.fcp_cmd_payload,
fcp_cmd_payload, sizeof(struct fcoe_fcp_cmd_payload));
/* Tstorm ctx */
t_st_ctx = &ctx->tstorm_st_context;
t_st_ctx->read_only.dev_type = (task_params->is_tape_device == 1 ?
FCOE_TASK_DEV_TYPE_TAPE :
FCOE_TASK_DEV_TYPE_DISK);
t_st_ctx->read_only.cid = cpu_to_le32(task_params->conn_cid);
val = cpu_to_le32(task_params->cq_rss_number);
t_st_ctx->read_only.glbl_q_num = val;
t_st_ctx->read_only.fcp_cmd_trns_size = cpu_to_le32(io_size);
t_st_ctx->read_only.task_type = task_params->task_type;
SET_FIELD(t_st_ctx->read_write.flags,
FCOE_TSTORM_FCOE_TASK_ST_CTX_READ_WRITE_EXP_FIRST_FRAME, 1);
t_st_ctx->read_write.rx_id = cpu_to_le16(FCOE_RX_ID);
/* Ustorm ctx */
u_ag_ctx = &ctx->ustorm_ag_context;
u_ag_ctx->global_cq_num = cpu_to_le32(task_params->cq_rss_number);
/* Mstorm buffer for sense/rsp data placement */
m_st_ctx = &ctx->mstorm_st_context;
val = cpu_to_le32(sense_data_buffer_phys_addr.hi);
m_st_ctx->rsp_buf_addr.hi = val;
val = cpu_to_le32(sense_data_buffer_phys_addr.lo);
m_st_ctx->rsp_buf_addr.lo = val;
if (task_params->task_type == FCOE_TASK_TYPE_WRITE_INITIATOR) {
/* Ystorm ctx */
y_st_ctx->expect_first_xfer = 1;
/* Set the amount of super SGEs. Can be up to 4. */
SET_FIELD(y_st_ctx->sgl_mode,
YSTORM_FCOE_TASK_ST_CTX_TX_SGL_MODE,
(slow_sgl ? SCSI_TX_SLOW_SGL : SCSI_FAST_SGL));
init_scsi_sgl_context(&y_st_ctx->sgl_params,
&y_st_ctx->data_desc,
sgl_task_params);
/* Mstorm ctx */
SET_FIELD(m_st_ctx->flags,
MSTORM_FCOE_TASK_ST_CTX_TX_SGL_MODE,
(slow_sgl ? SCSI_TX_SLOW_SGL : SCSI_FAST_SGL));
} else {
/* Tstorm ctx */
SET_FIELD(t_st_ctx->read_write.flags,
FCOE_TSTORM_FCOE_TASK_ST_CTX_READ_WRITE_RX_SGL_MODE,
(slow_sgl ? SCSI_TX_SLOW_SGL : SCSI_FAST_SGL));
/* Mstorm ctx */
m_st_ctx->data_2_trns_rem = cpu_to_le32(io_size);
init_scsi_sgl_context(&m_st_ctx->sgl_params,
&m_st_ctx->data_desc,
sgl_task_params);
}
init_common_sqe(task_params, SEND_FCOE_CMD);
return 0;
}
int init_initiator_midpath_unsolicited_fcoe_task(
struct fcoe_task_params *task_params,
struct fcoe_tx_mid_path_params *mid_path_fc_header,
struct scsi_sgl_task_params *tx_sgl_task_params,
struct scsi_sgl_task_params *rx_sgl_task_params,
u8 fw_to_place_fc_header)
{
struct fcoe_task_context *ctx = task_params->context;
struct ystorm_fcoe_task_st_ctx *y_st_ctx;
struct tstorm_fcoe_task_st_ctx *t_st_ctx;
struct ustorm_fcoe_task_ag_ctx *u_ag_ctx;
struct mstorm_fcoe_task_st_ctx *m_st_ctx;
u32 val;
memset(ctx, 0, sizeof(*(ctx)));
/* Init Ystorm */
y_st_ctx = &ctx->ystorm_st_context;
init_scsi_sgl_context(&y_st_ctx->sgl_params,
&y_st_ctx->data_desc,
tx_sgl_task_params);
SET_FIELD(y_st_ctx->sgl_mode,
YSTORM_FCOE_TASK_ST_CTX_TX_SGL_MODE, SCSI_FAST_SGL);
y_st_ctx->data_2_trns_rem = cpu_to_le32(task_params->tx_io_size);
y_st_ctx->task_type = task_params->task_type;
memcpy(&y_st_ctx->tx_info_union.tx_params.mid_path,
mid_path_fc_header, sizeof(struct fcoe_tx_mid_path_params));
/* Init Mstorm */
m_st_ctx = &ctx->mstorm_st_context;
init_scsi_sgl_context(&m_st_ctx->sgl_params,
&m_st_ctx->data_desc,
rx_sgl_task_params);
SET_FIELD(m_st_ctx->flags,
MSTORM_FCOE_TASK_ST_CTX_MP_INCLUDE_FC_HEADER,
fw_to_place_fc_header);
m_st_ctx->data_2_trns_rem = cpu_to_le32(task_params->rx_io_size);
/* Init Tstorm */
t_st_ctx = &ctx->tstorm_st_context;
t_st_ctx->read_only.cid = cpu_to_le32(task_params->conn_cid);
val = cpu_to_le32(task_params->cq_rss_number);
t_st_ctx->read_only.glbl_q_num = val;
t_st_ctx->read_only.task_type = task_params->task_type;
SET_FIELD(t_st_ctx->read_write.flags,
FCOE_TSTORM_FCOE_TASK_ST_CTX_READ_WRITE_EXP_FIRST_FRAME, 1);
t_st_ctx->read_write.rx_id = cpu_to_le16(FCOE_RX_ID);
/* Init Ustorm */
u_ag_ctx = &ctx->ustorm_ag_context;
u_ag_ctx->global_cq_num = cpu_to_le32(task_params->cq_rss_number);
/* Init SQE */
init_common_sqe(task_params, SEND_FCOE_MIDPATH);
task_params->sqe->additional_info_union.burst_length =
tx_sgl_task_params->total_buffer_size;
SET_FIELD(task_params->sqe->flags,
FCOE_WQE_NUM_SGES, tx_sgl_task_params->num_sges);
SET_FIELD(task_params->sqe->flags, FCOE_WQE_SGL_MODE,
SCSI_FAST_SGL);
return 0;
}
int init_initiator_abort_fcoe_task(struct fcoe_task_params *task_params)
{
init_common_sqe(task_params, SEND_FCOE_ABTS_REQUEST);
return 0;
}
int init_initiator_cleanup_fcoe_task(struct fcoe_task_params *task_params)
{
init_common_sqe(task_params, FCOE_EXCHANGE_CLEANUP);
return 0;
}
int init_initiator_sequence_recovery_fcoe_task(
struct fcoe_task_params *task_params, u32 off)
{
init_common_sqe(task_params, FCOE_SEQUENCE_RECOVERY);
task_params->sqe->additional_info_union.seq_rec_updated_offset = off;
return 0;
}
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