| /* QLogic iSCSI Offload Driver |
| * Copyright (c) 2016 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 <linux/types.h> |
| #include <asm/byteorder.h> |
| #include "qedi_hsi.h" |
| #include <linux/qed/qed_if.h> |
| |
| #include "qedi_fw_iscsi.h" |
| #include "qedi_fw_scsi.h" |
| |
| #define SCSI_NUM_SGES_IN_CACHE 0x4 |
| |
| static bool scsi_is_slow_sgl(u16 num_sges, bool small_mid_sge) |
| { |
| return (num_sges > SCSI_NUM_SGES_SLOW_SGL_THR && small_mid_sge); |
| } |
| |
| static |
| void init_scsi_sgl_context(struct scsi_sgl_params *ctx_sgl_params, |
| struct scsi_cached_sges *ctx_data_desc, |
| struct scsi_sgl_task_params *sgl_task_params) |
| { |
| u8 sge_index; |
| u8 num_sges; |
| u32 val; |
| |
| num_sges = (sgl_task_params->num_sges > SCSI_NUM_SGES_IN_CACHE) ? |
| SCSI_NUM_SGES_IN_CACHE : sgl_task_params->num_sges; |
| |
| /* sgl params */ |
| val = cpu_to_le32(sgl_task_params->sgl_phys_addr.lo); |
| ctx_sgl_params->sgl_addr.lo = val; |
| val = cpu_to_le32(sgl_task_params->sgl_phys_addr.hi); |
| ctx_sgl_params->sgl_addr.hi = val; |
| val = cpu_to_le32(sgl_task_params->total_buffer_size); |
| ctx_sgl_params->sgl_total_length = val; |
| ctx_sgl_params->sgl_num_sges = cpu_to_le16(sgl_task_params->num_sges); |
| |
| for (sge_index = 0; sge_index < num_sges; sge_index++) { |
| val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_addr.lo); |
| ctx_data_desc->sge[sge_index].sge_addr.lo = val; |
| val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_addr.hi); |
| ctx_data_desc->sge[sge_index].sge_addr.hi = val; |
| val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_len); |
| ctx_data_desc->sge[sge_index].sge_len = val; |
| } |
| } |
| |
| static u32 calc_rw_task_size(struct iscsi_task_params *task_params, |
| enum iscsi_task_type task_type, |
| struct scsi_sgl_task_params *sgl_task_params, |
| struct scsi_dif_task_params *dif_task_params) |
| { |
| u32 io_size; |
| |
| if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE || |
| task_type == ISCSI_TASK_TYPE_TARGET_READ) |
| io_size = task_params->tx_io_size; |
| else |
| io_size = task_params->rx_io_size; |
| |
| if (!io_size) |
| return 0; |
| |
| if (!dif_task_params) |
| return io_size; |
| |
| return !dif_task_params->dif_on_network ? |
| io_size : sgl_task_params->total_buffer_size; |
| } |
| |
| static void |
| init_dif_context_flags(struct iscsi_dif_flags *ctx_dif_flags, |
| struct scsi_dif_task_params *dif_task_params) |
| { |
| if (!dif_task_params) |
| return; |
| |
| SET_FIELD(ctx_dif_flags->flags, ISCSI_DIF_FLAGS_PROT_INTERVAL_SIZE_LOG, |
| dif_task_params->dif_block_size_log); |
| SET_FIELD(ctx_dif_flags->flags, ISCSI_DIF_FLAGS_DIF_TO_PEER, |
| dif_task_params->dif_on_network ? 1 : 0); |
| SET_FIELD(ctx_dif_flags->flags, ISCSI_DIF_FLAGS_HOST_INTERFACE, |
| dif_task_params->dif_on_host ? 1 : 0); |
| } |
| |
| static void init_sqe(struct iscsi_task_params *task_params, |
| struct scsi_sgl_task_params *sgl_task_params, |
| struct scsi_dif_task_params *dif_task_params, |
| struct iscsi_common_hdr *pdu_header, |
| struct scsi_initiator_cmd_params *cmd_params, |
| enum iscsi_task_type task_type, |
| bool is_cleanup) |
| { |
| if (!task_params->sqe) |
| return; |
| |
| memset(task_params->sqe, 0, sizeof(*task_params->sqe)); |
| task_params->sqe->task_id = cpu_to_le16(task_params->itid); |
| if (is_cleanup) { |
| SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE, |
| ISCSI_WQE_TYPE_TASK_CLEANUP); |
| return; |
| } |
| |
| switch (task_type) { |
| case ISCSI_TASK_TYPE_INITIATOR_WRITE: |
| { |
| u32 buf_size = 0; |
| u32 num_sges = 0; |
| |
| init_dif_context_flags(&task_params->sqe->prot_flags, |
| dif_task_params); |
| |
| SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE, |
| ISCSI_WQE_TYPE_NORMAL); |
| |
| if (task_params->tx_io_size) { |
| buf_size = calc_rw_task_size(task_params, task_type, |
| sgl_task_params, |
| dif_task_params); |
| |
| if (scsi_is_slow_sgl(sgl_task_params->num_sges, |
| sgl_task_params->small_mid_sge)) |
| num_sges = ISCSI_WQE_NUM_SGES_SLOWIO; |
| else |
| num_sges = min(sgl_task_params->num_sges, |
| (u16)SCSI_NUM_SGES_SLOW_SGL_THR); |
| } |
| |
| SET_FIELD(task_params->sqe->flags, ISCSI_WQE_NUM_SGES, num_sges); |
| SET_FIELD(task_params->sqe->contlen_cdbsize, ISCSI_WQE_CONT_LEN, |
| buf_size); |
| |
| if (GET_FIELD(pdu_header->hdr_second_dword, |
| ISCSI_CMD_HDR_TOTAL_AHS_LEN)) |
| SET_FIELD(task_params->sqe->contlen_cdbsize, ISCSI_WQE_CDB_SIZE, |
| cmd_params->extended_cdb_sge.sge_len); |
| } |
| break; |
| case ISCSI_TASK_TYPE_INITIATOR_READ: |
| SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE, |
| ISCSI_WQE_TYPE_NORMAL); |
| |
| if (GET_FIELD(pdu_header->hdr_second_dword, |
| ISCSI_CMD_HDR_TOTAL_AHS_LEN)) |
| SET_FIELD(task_params->sqe->contlen_cdbsize, |
| ISCSI_WQE_CDB_SIZE, |
| cmd_params->extended_cdb_sge.sge_len); |
| break; |
| case ISCSI_TASK_TYPE_LOGIN_RESPONSE: |
| case ISCSI_TASK_TYPE_MIDPATH: |
| { |
| bool advance_statsn = true; |
| |
| if (task_type == ISCSI_TASK_TYPE_LOGIN_RESPONSE) |
| SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE, |
| ISCSI_WQE_TYPE_LOGIN); |
| else |
| SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE, |
| ISCSI_WQE_TYPE_MIDDLE_PATH); |
| |
| if (task_type == ISCSI_TASK_TYPE_MIDPATH) { |
| u8 opcode = GET_FIELD(pdu_header->hdr_first_byte, |
| ISCSI_COMMON_HDR_OPCODE); |
| |
| if (opcode != ISCSI_OPCODE_TEXT_RESPONSE && |
| (opcode != ISCSI_OPCODE_NOP_IN || |
| pdu_header->itt == ISCSI_TTT_ALL_ONES)) |
| advance_statsn = false; |
| } |
| |
| SET_FIELD(task_params->sqe->flags, ISCSI_WQE_RESPONSE, |
| advance_statsn ? 1 : 0); |
| |
| if (task_params->tx_io_size) { |
| SET_FIELD(task_params->sqe->contlen_cdbsize, |
| ISCSI_WQE_CONT_LEN, task_params->tx_io_size); |
| |
| if (scsi_is_slow_sgl(sgl_task_params->num_sges, |
| sgl_task_params->small_mid_sge)) |
| SET_FIELD(task_params->sqe->flags, ISCSI_WQE_NUM_SGES, |
| ISCSI_WQE_NUM_SGES_SLOWIO); |
| else |
| SET_FIELD(task_params->sqe->flags, ISCSI_WQE_NUM_SGES, |
| min(sgl_task_params->num_sges, |
| (u16)SCSI_NUM_SGES_SLOW_SGL_THR)); |
| } |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static void init_default_iscsi_task(struct iscsi_task_params *task_params, |
| struct data_hdr *pdu_header, |
| enum iscsi_task_type task_type) |
| { |
| struct e4_iscsi_task_context *context; |
| u32 val; |
| u16 index; |
| u8 val_byte; |
| |
| context = task_params->context; |
| val_byte = context->mstorm_ag_context.cdu_validation; |
| memset(context, 0, sizeof(*context)); |
| context->mstorm_ag_context.cdu_validation = val_byte; |
| |
| for (index = 0; index < |
| ARRAY_SIZE(context->ystorm_st_context.pdu_hdr.data.data); |
| index++) { |
| val = cpu_to_le32(pdu_header->data[index]); |
| context->ystorm_st_context.pdu_hdr.data.data[index] = val; |
| } |
| |
| context->mstorm_st_context.task_type = task_type; |
| context->mstorm_ag_context.task_cid = |
| cpu_to_le16(task_params->conn_icid); |
| |
| SET_FIELD(context->ustorm_ag_context.flags1, |
| E4_USTORM_ISCSI_TASK_AG_CTX_R2T2RECV, 1); |
| |
| context->ustorm_st_context.task_type = task_type; |
| context->ustorm_st_context.cq_rss_number = task_params->cq_rss_number; |
| context->ustorm_ag_context.icid = cpu_to_le16(task_params->conn_icid); |
| } |
| |
| static |
| void init_initiator_rw_cdb_ystorm_context(struct ystorm_iscsi_task_st_ctx *ystc, |
| struct scsi_initiator_cmd_params *cmd) |
| { |
| union iscsi_task_hdr *ctx_pdu_hdr = &ystc->pdu_hdr; |
| u32 val; |
| |
| if (!cmd->extended_cdb_sge.sge_len) |
| return; |
| |
| SET_FIELD(ctx_pdu_hdr->ext_cdb_cmd.hdr_second_dword, |
| ISCSI_EXT_CDB_CMD_HDR_CDB_SIZE, |
| cmd->extended_cdb_sge.sge_len); |
| val = cpu_to_le32(cmd->extended_cdb_sge.sge_addr.lo); |
| ctx_pdu_hdr->ext_cdb_cmd.cdb_sge.sge_addr.lo = val; |
| val = cpu_to_le32(cmd->extended_cdb_sge.sge_addr.hi); |
| ctx_pdu_hdr->ext_cdb_cmd.cdb_sge.sge_addr.hi = val; |
| val = cpu_to_le32(cmd->extended_cdb_sge.sge_len); |
| ctx_pdu_hdr->ext_cdb_cmd.cdb_sge.sge_len = val; |
| } |
| |
| static |
| void init_ustorm_task_contexts(struct ustorm_iscsi_task_st_ctx *ustorm_st_cxt, |
| struct e4_ustorm_iscsi_task_ag_ctx *ustorm_ag_cxt, |
| u32 remaining_recv_len, u32 expected_data_transfer_len, |
| u8 num_sges, bool tx_dif_conn_err_en) |
| { |
| u32 val; |
| |
| ustorm_st_cxt->rem_rcv_len = cpu_to_le32(remaining_recv_len); |
| ustorm_ag_cxt->exp_data_acked = cpu_to_le32(expected_data_transfer_len); |
| val = cpu_to_le32(expected_data_transfer_len); |
| ustorm_st_cxt->exp_data_transfer_len = val; |
| SET_FIELD(ustorm_st_cxt->reg1.reg1_map, ISCSI_REG1_NUM_SGES, num_sges); |
| SET_FIELD(ustorm_ag_cxt->flags2, |
| E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_EN, |
| tx_dif_conn_err_en ? 1 : 0); |
| } |
| |
| static |
| void set_rw_exp_data_acked_and_cont_len(struct e4_iscsi_task_context *context, |
| struct iscsi_conn_params *conn_params, |
| enum iscsi_task_type task_type, |
| u32 task_size, |
| u32 exp_data_transfer_len, |
| u8 total_ahs_length) |
| { |
| u32 max_unsolicited_data = 0, val; |
| |
| if (total_ahs_length && |
| (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE || |
| task_type == ISCSI_TASK_TYPE_INITIATOR_READ)) |
| SET_FIELD(context->ustorm_st_context.flags2, |
| USTORM_ISCSI_TASK_ST_CTX_AHS_EXIST, 1); |
| |
| switch (task_type) { |
| case ISCSI_TASK_TYPE_INITIATOR_WRITE: |
| if (!conn_params->initial_r2t) |
| max_unsolicited_data = conn_params->first_burst_length; |
| else if (conn_params->immediate_data) |
| max_unsolicited_data = |
| min(conn_params->first_burst_length, |
| conn_params->max_send_pdu_length); |
| |
| context->ustorm_ag_context.exp_data_acked = |
| cpu_to_le32(total_ahs_length == 0 ? |
| min(exp_data_transfer_len, |
| max_unsolicited_data) : |
| ((u32)(total_ahs_length + |
| ISCSI_AHS_CNTL_SIZE))); |
| break; |
| case ISCSI_TASK_TYPE_TARGET_READ: |
| val = cpu_to_le32(exp_data_transfer_len); |
| context->ustorm_ag_context.exp_data_acked = val; |
| break; |
| case ISCSI_TASK_TYPE_INITIATOR_READ: |
| context->ustorm_ag_context.exp_data_acked = |
| cpu_to_le32((total_ahs_length == 0 ? 0 : |
| total_ahs_length + |
| ISCSI_AHS_CNTL_SIZE)); |
| break; |
| case ISCSI_TASK_TYPE_TARGET_WRITE: |
| val = cpu_to_le32(task_size); |
| context->ustorm_ag_context.exp_cont_len = val; |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static |
| void init_rtdif_task_context(struct rdif_task_context *rdif_context, |
| struct tdif_task_context *tdif_context, |
| struct scsi_dif_task_params *dif_task_params, |
| enum iscsi_task_type task_type) |
| { |
| u32 val; |
| |
| if (!dif_task_params->dif_on_network || !dif_task_params->dif_on_host) |
| return; |
| |
| if (task_type == ISCSI_TASK_TYPE_TARGET_WRITE || |
| task_type == ISCSI_TASK_TYPE_INITIATOR_READ) { |
| rdif_context->app_tag_value = |
| cpu_to_le16(dif_task_params->application_tag); |
| rdif_context->partial_crc_value = cpu_to_le16(0xffff); |
| val = cpu_to_le32(dif_task_params->initial_ref_tag); |
| rdif_context->initial_ref_tag = val; |
| rdif_context->app_tag_mask = |
| cpu_to_le16(dif_task_params->application_tag_mask); |
| SET_FIELD(rdif_context->flags0, RDIF_TASK_CONTEXT_CRC_SEED, |
| dif_task_params->crc_seed ? 1 : 0); |
| SET_FIELD(rdif_context->flags0, |
| RDIF_TASK_CONTEXT_HOST_GUARD_TYPE, |
| dif_task_params->host_guard_type); |
| SET_FIELD(rdif_context->flags0, |
| RDIF_TASK_CONTEXT_PROTECTION_TYPE, |
| dif_task_params->protection_type); |
| SET_FIELD(rdif_context->flags0, |
| RDIF_TASK_CONTEXT_INITIAL_REF_TAG_VALID, 1); |
| SET_FIELD(rdif_context->flags0, |
| RDIF_TASK_CONTEXT_KEEP_REF_TAG_CONST, |
| dif_task_params->keep_ref_tag_const ? 1 : 0); |
| SET_FIELD(rdif_context->flags1, |
| RDIF_TASK_CONTEXT_VALIDATE_APP_TAG, |
| (dif_task_params->validate_app_tag && |
| dif_task_params->dif_on_network) ? 1 : 0); |
| SET_FIELD(rdif_context->flags1, |
| RDIF_TASK_CONTEXT_VALIDATE_GUARD, |
| (dif_task_params->validate_guard && |
| dif_task_params->dif_on_network) ? 1 : 0); |
| SET_FIELD(rdif_context->flags1, |
| RDIF_TASK_CONTEXT_VALIDATE_REF_TAG, |
| (dif_task_params->validate_ref_tag && |
| dif_task_params->dif_on_network) ? 1 : 0); |
| SET_FIELD(rdif_context->flags1, |
| RDIF_TASK_CONTEXT_HOST_INTERFACE, |
| dif_task_params->dif_on_host ? 1 : 0); |
| SET_FIELD(rdif_context->flags1, |
| RDIF_TASK_CONTEXT_NETWORK_INTERFACE, |
| dif_task_params->dif_on_network ? 1 : 0); |
| SET_FIELD(rdif_context->flags1, |
| RDIF_TASK_CONTEXT_FORWARD_GUARD, |
| dif_task_params->forward_guard ? 1 : 0); |
| SET_FIELD(rdif_context->flags1, |
| RDIF_TASK_CONTEXT_FORWARD_APP_TAG, |
| dif_task_params->forward_app_tag ? 1 : 0); |
| SET_FIELD(rdif_context->flags1, |
| RDIF_TASK_CONTEXT_FORWARD_REF_TAG, |
| dif_task_params->forward_ref_tag ? 1 : 0); |
| SET_FIELD(rdif_context->flags1, |
| RDIF_TASK_CONTEXT_FORWARD_APP_TAG_WITH_MASK, |
| dif_task_params->forward_app_tag_with_mask ? 1 : 0); |
| SET_FIELD(rdif_context->flags1, |
| RDIF_TASK_CONTEXT_FORWARD_REF_TAG_WITH_MASK, |
| dif_task_params->forward_ref_tag_with_mask ? 1 : 0); |
| SET_FIELD(rdif_context->flags1, |
| RDIF_TASK_CONTEXT_INTERVAL_SIZE, |
| dif_task_params->dif_block_size_log - 9); |
| SET_FIELD(rdif_context->state, |
| RDIF_TASK_CONTEXT_REF_TAG_MASK, |
| dif_task_params->ref_tag_mask); |
| SET_FIELD(rdif_context->state, RDIF_TASK_CONTEXT_IGNORE_APP_TAG, |
| dif_task_params->ignore_app_tag); |
| } |
| |
| if (task_type == ISCSI_TASK_TYPE_TARGET_READ || |
| task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) { |
| tdif_context->app_tag_value = |
| cpu_to_le16(dif_task_params->application_tag); |
| tdif_context->partial_crc_value_b = |
| cpu_to_le16(dif_task_params->crc_seed ? 0xffff : 0x0000); |
| tdif_context->partial_crc_value_a = |
| cpu_to_le16(dif_task_params->crc_seed ? 0xffff : 0x0000); |
| SET_FIELD(tdif_context->flags0, TDIF_TASK_CONTEXT_CRC_SEED, |
| dif_task_params->crc_seed ? 1 : 0); |
| |
| SET_FIELD(tdif_context->flags0, |
| TDIF_TASK_CONTEXT_SET_ERROR_WITH_EOP, |
| dif_task_params->tx_dif_conn_err_en ? 1 : 0); |
| SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_FORWARD_GUARD, |
| dif_task_params->forward_guard ? 1 : 0); |
| SET_FIELD(tdif_context->flags1, |
| TDIF_TASK_CONTEXT_FORWARD_APP_TAG, |
| dif_task_params->forward_app_tag ? 1 : 0); |
| SET_FIELD(tdif_context->flags1, |
| TDIF_TASK_CONTEXT_FORWARD_REF_TAG, |
| dif_task_params->forward_ref_tag ? 1 : 0); |
| SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_INTERVAL_SIZE, |
| dif_task_params->dif_block_size_log - 9); |
| SET_FIELD(tdif_context->flags1, |
| TDIF_TASK_CONTEXT_HOST_INTERFACE, |
| dif_task_params->dif_on_host ? 1 : 0); |
| SET_FIELD(tdif_context->flags1, |
| TDIF_TASK_CONTEXT_NETWORK_INTERFACE, |
| dif_task_params->dif_on_network ? 1 : 0); |
| val = cpu_to_le32(dif_task_params->initial_ref_tag); |
| tdif_context->initial_ref_tag = val; |
| tdif_context->app_tag_mask = |
| cpu_to_le16(dif_task_params->application_tag_mask); |
| SET_FIELD(tdif_context->flags0, |
| TDIF_TASK_CONTEXT_HOST_GUARD_TYPE, |
| dif_task_params->host_guard_type); |
| SET_FIELD(tdif_context->flags0, |
| TDIF_TASK_CONTEXT_PROTECTION_TYPE, |
| dif_task_params->protection_type); |
| SET_FIELD(tdif_context->flags0, |
| TDIF_TASK_CONTEXT_INITIAL_REF_TAG_VALID, |
| dif_task_params->initial_ref_tag_is_valid ? 1 : 0); |
| SET_FIELD(tdif_context->flags0, |
| TDIF_TASK_CONTEXT_KEEP_REF_TAG_CONST, |
| dif_task_params->keep_ref_tag_const ? 1 : 0); |
| SET_FIELD(tdif_context->flags1, |
| TDIF_TASK_CONTEXT_VALIDATE_GUARD, |
| (dif_task_params->validate_guard && |
| dif_task_params->dif_on_host) ? 1 : 0); |
| SET_FIELD(tdif_context->flags1, |
| TDIF_TASK_CONTEXT_VALIDATE_APP_TAG, |
| (dif_task_params->validate_app_tag && |
| dif_task_params->dif_on_host) ? 1 : 0); |
| SET_FIELD(tdif_context->flags1, |
| TDIF_TASK_CONTEXT_VALIDATE_REF_TAG, |
| (dif_task_params->validate_ref_tag && |
| dif_task_params->dif_on_host) ? 1 : 0); |
| SET_FIELD(tdif_context->flags1, |
| TDIF_TASK_CONTEXT_FORWARD_APP_TAG_WITH_MASK, |
| dif_task_params->forward_app_tag_with_mask ? 1 : 0); |
| SET_FIELD(tdif_context->flags1, |
| TDIF_TASK_CONTEXT_FORWARD_REF_TAG_WITH_MASK, |
| dif_task_params->forward_ref_tag_with_mask ? 1 : 0); |
| SET_FIELD(tdif_context->flags1, |
| TDIF_TASK_CONTEXT_REF_TAG_MASK, |
| dif_task_params->ref_tag_mask); |
| SET_FIELD(tdif_context->flags0, |
| TDIF_TASK_CONTEXT_IGNORE_APP_TAG, |
| dif_task_params->ignore_app_tag ? 1 : 0); |
| } |
| } |
| |
| static void set_local_completion_context(struct e4_iscsi_task_context *context) |
| { |
| SET_FIELD(context->ystorm_st_context.state.flags, |
| YSTORM_ISCSI_TASK_STATE_LOCAL_COMP, 1); |
| SET_FIELD(context->ustorm_st_context.flags, |
| USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP, 1); |
| } |
| |
| static int init_rw_iscsi_task(struct iscsi_task_params *task_params, |
| enum iscsi_task_type task_type, |
| struct iscsi_conn_params *conn_params, |
| struct iscsi_common_hdr *pdu_header, |
| struct scsi_sgl_task_params *sgl_task_params, |
| struct scsi_initiator_cmd_params *cmd_params, |
| struct scsi_dif_task_params *dif_task_params) |
| { |
| u32 exp_data_transfer_len = conn_params->max_burst_length; |
| struct e4_iscsi_task_context *cxt; |
| bool slow_io = false; |
| u32 task_size, val; |
| u8 num_sges = 0; |
| |
| task_size = calc_rw_task_size(task_params, task_type, sgl_task_params, |
| dif_task_params); |
| |
| init_default_iscsi_task(task_params, (struct data_hdr *)pdu_header, |
| task_type); |
| |
| cxt = task_params->context; |
| |
| |
| if (task_type == ISCSI_TASK_TYPE_TARGET_READ) { |
| set_local_completion_context(cxt); |
| } else if (task_type == ISCSI_TASK_TYPE_TARGET_WRITE) { |
| val = cpu_to_le32(task_size + |
| ((struct iscsi_r2t_hdr *)pdu_header)->buffer_offset); |
| cxt->ystorm_st_context.pdu_hdr.r2t.desired_data_trns_len = val; |
| cxt->mstorm_st_context.expected_itt = |
| cpu_to_le32(pdu_header->itt); |
| } else { |
| val = cpu_to_le32(task_size); |
| cxt->ystorm_st_context.pdu_hdr.cmd.expected_transfer_length = |
| val; |
| init_initiator_rw_cdb_ystorm_context(&cxt->ystorm_st_context, |
| cmd_params); |
| val = cpu_to_le32(cmd_params->sense_data_buffer_phys_addr.lo); |
| cxt->mstorm_st_context.sense_db.lo = val; |
| |
| val = cpu_to_le32(cmd_params->sense_data_buffer_phys_addr.hi); |
| cxt->mstorm_st_context.sense_db.hi = val; |
| } |
| |
| if (task_params->tx_io_size) { |
| init_dif_context_flags(&cxt->ystorm_st_context.state.dif_flags, |
| dif_task_params); |
| init_dif_context_flags(&cxt->ustorm_st_context.dif_flags, |
| dif_task_params); |
| init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params, |
| &cxt->ystorm_st_context.state.data_desc, |
| sgl_task_params); |
| |
| slow_io = scsi_is_slow_sgl(sgl_task_params->num_sges, |
| sgl_task_params->small_mid_sge); |
| |
| num_sges = !slow_io ? min_t(u16, sgl_task_params->num_sges, |
| (u16)SCSI_NUM_SGES_SLOW_SGL_THR) : |
| ISCSI_WQE_NUM_SGES_SLOWIO; |
| |
| if (slow_io) { |
| SET_FIELD(cxt->ystorm_st_context.state.flags, |
| YSTORM_ISCSI_TASK_STATE_SLOW_IO, 1); |
| } |
| } else if (task_params->rx_io_size) { |
| init_dif_context_flags(&cxt->mstorm_st_context.dif_flags, |
| dif_task_params); |
| init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params, |
| &cxt->mstorm_st_context.data_desc, |
| sgl_task_params); |
| num_sges = !scsi_is_slow_sgl(sgl_task_params->num_sges, |
| sgl_task_params->small_mid_sge) ? |
| min_t(u16, sgl_task_params->num_sges, |
| (u16)SCSI_NUM_SGES_SLOW_SGL_THR) : |
| ISCSI_WQE_NUM_SGES_SLOWIO; |
| cxt->mstorm_st_context.rem_task_size = cpu_to_le32(task_size); |
| } |
| |
| if (exp_data_transfer_len > task_size || |
| task_type != ISCSI_TASK_TYPE_TARGET_WRITE) |
| exp_data_transfer_len = task_size; |
| |
| init_ustorm_task_contexts(&task_params->context->ustorm_st_context, |
| &task_params->context->ustorm_ag_context, |
| task_size, exp_data_transfer_len, num_sges, |
| dif_task_params ? |
| dif_task_params->tx_dif_conn_err_en : false); |
| |
| set_rw_exp_data_acked_and_cont_len(task_params->context, conn_params, |
| task_type, task_size, |
| exp_data_transfer_len, |
| GET_FIELD(pdu_header->hdr_second_dword, |
| ISCSI_CMD_HDR_TOTAL_AHS_LEN)); |
| |
| if (dif_task_params) |
| init_rtdif_task_context(&task_params->context->rdif_context, |
| &task_params->context->tdif_context, |
| dif_task_params, task_type); |
| |
| init_sqe(task_params, sgl_task_params, dif_task_params, pdu_header, |
| cmd_params, task_type, false); |
| |
| return 0; |
| } |
| |
| int init_initiator_rw_iscsi_task(struct iscsi_task_params *task_params, |
| struct iscsi_conn_params *conn_params, |
| struct scsi_initiator_cmd_params *cmd_params, |
| struct iscsi_cmd_hdr *cmd_header, |
| struct scsi_sgl_task_params *tx_sgl_params, |
| struct scsi_sgl_task_params *rx_sgl_params, |
| struct scsi_dif_task_params *dif_task_params) |
| { |
| if (GET_FIELD(cmd_header->flags_attr, ISCSI_CMD_HDR_WRITE)) |
| return init_rw_iscsi_task(task_params, |
| ISCSI_TASK_TYPE_INITIATOR_WRITE, |
| conn_params, |
| (struct iscsi_common_hdr *)cmd_header, |
| tx_sgl_params, cmd_params, |
| dif_task_params); |
| else if (GET_FIELD(cmd_header->flags_attr, ISCSI_CMD_HDR_READ) || |
| (task_params->rx_io_size == 0 && task_params->tx_io_size == 0)) |
| return init_rw_iscsi_task(task_params, |
| ISCSI_TASK_TYPE_INITIATOR_READ, |
| conn_params, |
| (struct iscsi_common_hdr *)cmd_header, |
| rx_sgl_params, cmd_params, |
| dif_task_params); |
| else |
| return -1; |
| } |
| |
| int init_initiator_login_request_task(struct iscsi_task_params *task_params, |
| struct iscsi_login_req_hdr *login_header, |
| struct scsi_sgl_task_params *tx_params, |
| struct scsi_sgl_task_params *rx_params) |
| { |
| struct e4_iscsi_task_context *cxt; |
| |
| cxt = task_params->context; |
| |
| init_default_iscsi_task(task_params, |
| (struct data_hdr *)login_header, |
| ISCSI_TASK_TYPE_MIDPATH); |
| |
| init_ustorm_task_contexts(&cxt->ustorm_st_context, |
| &cxt->ustorm_ag_context, |
| task_params->rx_io_size ? |
| rx_params->total_buffer_size : 0, |
| task_params->tx_io_size ? |
| tx_params->total_buffer_size : 0, 0, |
| 0); |
| |
| if (task_params->tx_io_size) |
| init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params, |
| &cxt->ystorm_st_context.state.data_desc, |
| tx_params); |
| |
| if (task_params->rx_io_size) |
| init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params, |
| &cxt->mstorm_st_context.data_desc, |
| rx_params); |
| |
| cxt->mstorm_st_context.rem_task_size = |
| cpu_to_le32(task_params->rx_io_size ? |
| rx_params->total_buffer_size : 0); |
| |
| init_sqe(task_params, tx_params, NULL, |
| (struct iscsi_common_hdr *)login_header, NULL, |
| ISCSI_TASK_TYPE_MIDPATH, false); |
| |
| return 0; |
| } |
| |
| int init_initiator_nop_out_task(struct iscsi_task_params *task_params, |
| struct iscsi_nop_out_hdr *nop_out_pdu_header, |
| struct scsi_sgl_task_params *tx_sgl_task_params, |
| struct scsi_sgl_task_params *rx_sgl_task_params) |
| { |
| struct e4_iscsi_task_context *cxt; |
| |
| cxt = task_params->context; |
| |
| init_default_iscsi_task(task_params, |
| (struct data_hdr *)nop_out_pdu_header, |
| ISCSI_TASK_TYPE_MIDPATH); |
| |
| if (nop_out_pdu_header->itt == ISCSI_ITT_ALL_ONES) |
| set_local_completion_context(task_params->context); |
| |
| if (task_params->tx_io_size) |
| init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params, |
| &cxt->ystorm_st_context.state.data_desc, |
| tx_sgl_task_params); |
| |
| if (task_params->rx_io_size) |
| init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params, |
| &cxt->mstorm_st_context.data_desc, |
| rx_sgl_task_params); |
| |
| init_ustorm_task_contexts(&cxt->ustorm_st_context, |
| &cxt->ustorm_ag_context, |
| task_params->rx_io_size ? |
| rx_sgl_task_params->total_buffer_size : 0, |
| task_params->tx_io_size ? |
| tx_sgl_task_params->total_buffer_size : 0, |
| 0, 0); |
| |
| cxt->mstorm_st_context.rem_task_size = |
| cpu_to_le32(task_params->rx_io_size ? |
| rx_sgl_task_params->total_buffer_size : |
| 0); |
| |
| init_sqe(task_params, tx_sgl_task_params, NULL, |
| (struct iscsi_common_hdr *)nop_out_pdu_header, NULL, |
| ISCSI_TASK_TYPE_MIDPATH, false); |
| |
| return 0; |
| } |
| |
| int init_initiator_logout_request_task(struct iscsi_task_params *task_params, |
| struct iscsi_logout_req_hdr *logout_hdr, |
| struct scsi_sgl_task_params *tx_params, |
| struct scsi_sgl_task_params *rx_params) |
| { |
| struct e4_iscsi_task_context *cxt; |
| |
| cxt = task_params->context; |
| |
| init_default_iscsi_task(task_params, |
| (struct data_hdr *)logout_hdr, |
| ISCSI_TASK_TYPE_MIDPATH); |
| |
| if (task_params->tx_io_size) |
| init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params, |
| &cxt->ystorm_st_context.state.data_desc, |
| tx_params); |
| |
| if (task_params->rx_io_size) |
| init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params, |
| &cxt->mstorm_st_context.data_desc, |
| rx_params); |
| |
| init_ustorm_task_contexts(&cxt->ustorm_st_context, |
| &cxt->ustorm_ag_context, |
| task_params->rx_io_size ? |
| rx_params->total_buffer_size : 0, |
| task_params->tx_io_size ? |
| tx_params->total_buffer_size : 0, |
| 0, 0); |
| |
| cxt->mstorm_st_context.rem_task_size = |
| cpu_to_le32(task_params->rx_io_size ? |
| rx_params->total_buffer_size : 0); |
| |
| init_sqe(task_params, tx_params, NULL, |
| (struct iscsi_common_hdr *)logout_hdr, NULL, |
| ISCSI_TASK_TYPE_MIDPATH, false); |
| |
| return 0; |
| } |
| |
| int init_initiator_tmf_request_task(struct iscsi_task_params *task_params, |
| struct iscsi_tmf_request_hdr *tmf_header) |
| { |
| init_default_iscsi_task(task_params, (struct data_hdr *)tmf_header, |
| ISCSI_TASK_TYPE_MIDPATH); |
| |
| init_sqe(task_params, NULL, NULL, |
| (struct iscsi_common_hdr *)tmf_header, NULL, |
| ISCSI_TASK_TYPE_MIDPATH, false); |
| |
| return 0; |
| } |
| |
| int init_initiator_text_request_task(struct iscsi_task_params *task_params, |
| struct iscsi_text_request_hdr *text_header, |
| struct scsi_sgl_task_params *tx_params, |
| struct scsi_sgl_task_params *rx_params) |
| { |
| struct e4_iscsi_task_context *cxt; |
| |
| cxt = task_params->context; |
| |
| init_default_iscsi_task(task_params, |
| (struct data_hdr *)text_header, |
| ISCSI_TASK_TYPE_MIDPATH); |
| |
| if (task_params->tx_io_size) |
| init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params, |
| &cxt->ystorm_st_context.state.data_desc, |
| tx_params); |
| |
| if (task_params->rx_io_size) |
| init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params, |
| &cxt->mstorm_st_context.data_desc, |
| rx_params); |
| |
| cxt->mstorm_st_context.rem_task_size = |
| cpu_to_le32(task_params->rx_io_size ? |
| rx_params->total_buffer_size : 0); |
| |
| init_ustorm_task_contexts(&cxt->ustorm_st_context, |
| &cxt->ustorm_ag_context, |
| task_params->rx_io_size ? |
| rx_params->total_buffer_size : 0, |
| task_params->tx_io_size ? |
| tx_params->total_buffer_size : 0, 0, 0); |
| |
| init_sqe(task_params, tx_params, NULL, |
| (struct iscsi_common_hdr *)text_header, NULL, |
| ISCSI_TASK_TYPE_MIDPATH, false); |
| |
| return 0; |
| } |
| |
| int init_cleanup_task(struct iscsi_task_params *task_params) |
| { |
| init_sqe(task_params, NULL, NULL, NULL, NULL, ISCSI_TASK_TYPE_MIDPATH, |
| true); |
| return 0; |
| } |
