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path: root/drivers/scsi/qedf/drv_fcoe_fw_funcs.c
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Diffstat (limited to 'drivers/scsi/qedf/drv_fcoe_fw_funcs.c')
-rw-r--r--drivers/scsi/qedf/drv_fcoe_fw_funcs.c196
1 files changed, 196 insertions, 0 deletions
diff --git a/drivers/scsi/qedf/drv_fcoe_fw_funcs.c b/drivers/scsi/qedf/drv_fcoe_fw_funcs.c
new file mode 100644
index 000000000..e8bc8d9e4
--- /dev/null
+++ b/drivers/scsi/qedf/drv_fcoe_fw_funcs.c
@@ -0,0 +1,196 @@
+// 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 fcoe_task_context *ctx = task_params->context;
+ const u8 val_byte = ctx->ystorm_ag_context.byte0;
+ struct 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 fcoe_task_context *ctx = task_params->context;
+ const u8 val_byte = ctx->ystorm_ag_context.byte0;
+ struct 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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-31 13:17:43 +0000