197 lines
6.5 KiB
C
197 lines
6.5 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
/* QLogic FCoE Offload Driver
|
||
|
|
* Copyright (c) 2016-2018 Cavium Inc.
|
||
|
|
*/
|
||
|
|
#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 e4_fcoe_task_context *ctx = task_params->context;
|
||
|
|
const u8 val_byte = ctx->ystorm_ag_context.byte0;
|
||
|
|
struct e4_ustorm_fcoe_task_ag_ctx *u_ag_ctx;
|
||
|
|
struct ystorm_fcoe_task_st_ctx *y_st_ctx;
|
||
|
|
struct tstorm_fcoe_task_st_ctx *t_st_ctx;
|
||
|
|
struct mstorm_fcoe_task_st_ctx *m_st_ctx;
|
||
|
|
u32 io_size, val;
|
||
|
|
bool slow_sgl;
|
||
|
|
|
||
|
|
memset(ctx, 0, sizeof(*(ctx)));
|
||
|
|
ctx->ystorm_ag_context.byte0 = val_byte;
|
||
|
|
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 = (u8)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 = (u8)(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 = (u8)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));
|
||
|
|
m_st_ctx->sgl_params.sgl_num_sges =
|
||
|
|
cpu_to_le16(sgl_task_params->num_sges);
|
||
|
|
} 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 Sqe */
|
||
|
|
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 e4_fcoe_task_context *ctx = task_params->context;
|
||
|
|
const u8 val_byte = ctx->ystorm_ag_context.byte0;
|
||
|
|
struct e4_ustorm_fcoe_task_ag_ctx *u_ag_ctx;
|
||
|
|
struct ystorm_fcoe_task_st_ctx *y_st_ctx;
|
||
|
|
struct tstorm_fcoe_task_st_ctx *t_st_ctx;
|
||
|
|
struct mstorm_fcoe_task_st_ctx *m_st_ctx;
|
||
|
|
u32 val;
|
||
|
|
|
||
|
|
memset(ctx, 0, sizeof(*(ctx)));
|
||
|
|
ctx->ystorm_ag_context.byte0 = val_byte;
|
||
|
|
|
||
|
|
/* 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 = (u8)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 = (u8)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 desired_offset)
|
||
|
|
{
|
||
|
|
init_common_sqe(task_params, FCOE_SEQUENCE_RECOVERY);
|
||
|
|
task_params->sqe->additional_info_union.seq_rec_updated_offset =
|
||
|
|
desired_offset;
|
||
|
|
return 0;
|
||
|
|
}
|