--- /dev/null
+/* 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 iscsi_task_context *context;
+ u16 index;
+ u32 val;
+
+ context = task_params->context;
+ memset(context, 0, sizeof(*context));
+
+ 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,
+ 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 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,
+ 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 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_HOSTGUARDTYPE,
+ dif_task_params->host_guard_type);
+ SET_FIELD(rdif_context->flags0,
+ RDIF_TASK_CONTEXT_PROTECTIONTYPE,
+ dif_task_params->protection_type);
+ SET_FIELD(rdif_context->flags0,
+ RDIF_TASK_CONTEXT_INITIALREFTAGVALID, 1);
+ SET_FIELD(rdif_context->flags0,
+ RDIF_TASK_CONTEXT_KEEPREFTAGCONST,
+ dif_task_params->keep_ref_tag_const ? 1 : 0);
+ SET_FIELD(rdif_context->flags1,
+ RDIF_TASK_CONTEXT_VALIDATEAPPTAG,
+ (dif_task_params->validate_app_tag &&
+ dif_task_params->dif_on_network) ? 1 : 0);
+ SET_FIELD(rdif_context->flags1,
+ RDIF_TASK_CONTEXT_VALIDATEGUARD,
+ (dif_task_params->validate_guard &&
+ dif_task_params->dif_on_network) ? 1 : 0);
+ SET_FIELD(rdif_context->flags1,
+ RDIF_TASK_CONTEXT_VALIDATEREFTAG,
+ (dif_task_params->validate_ref_tag &&
+ dif_task_params->dif_on_network) ? 1 : 0);
+ SET_FIELD(rdif_context->flags1,
+ RDIF_TASK_CONTEXT_HOSTINTERFACE,
+ dif_task_params->dif_on_host ? 1 : 0);
+ SET_FIELD(rdif_context->flags1,
+ RDIF_TASK_CONTEXT_NETWORKINTERFACE,
+ dif_task_params->dif_on_network ? 1 : 0);
+ SET_FIELD(rdif_context->flags1,
+ RDIF_TASK_CONTEXT_FORWARDGUARD,
+ dif_task_params->forward_guard ? 1 : 0);
+ SET_FIELD(rdif_context->flags1,
+ RDIF_TASK_CONTEXT_FORWARDAPPTAG,
+ dif_task_params->forward_app_tag ? 1 : 0);
+ SET_FIELD(rdif_context->flags1,
+ RDIF_TASK_CONTEXT_FORWARDREFTAG,
+ dif_task_params->forward_ref_tag ? 1 : 0);
+ SET_FIELD(rdif_context->flags1,
+ RDIF_TASK_CONTEXT_FORWARDAPPTAGWITHMASK,
+ dif_task_params->forward_app_tag_with_mask ? 1 : 0);
+ SET_FIELD(rdif_context->flags1,
+ RDIF_TASK_CONTEXT_FORWARDREFTAGWITHMASK,
+ dif_task_params->forward_ref_tag_with_mask ? 1 : 0);
+ SET_FIELD(rdif_context->flags1,
+ RDIF_TASK_CONTEXT_INTERVALSIZE,
+ dif_task_params->dif_block_size_log - 9);
+ SET_FIELD(rdif_context->state,
+ RDIF_TASK_CONTEXT_REFTAGMASK,
+ dif_task_params->ref_tag_mask);
+ SET_FIELD(rdif_context->state, RDIF_TASK_CONTEXT_IGNOREAPPTAG,
+ 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_valueB =
+ 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_SETERRORWITHEOP,
+ dif_task_params->tx_dif_conn_err_en ? 1 : 0);
+ SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_FORWARDGUARD,
+ dif_task_params->forward_guard ? 1 : 0);
+ SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_FORWARDAPPTAG,
+ dif_task_params->forward_app_tag ? 1 : 0);
+ SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_FORWARDREFTAG,
+ dif_task_params->forward_ref_tag ? 1 : 0);
+ SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_INTERVALSIZE,
+ dif_task_params->dif_block_size_log - 9);
+ SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_HOSTINTERFACE,
+ dif_task_params->dif_on_host ? 1 : 0);
+ SET_FIELD(tdif_context->flags1,
+ TDIF_TASK_CONTEXT_NETWORKINTERFACE,
+ 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_HOSTGUARDTYPE,
+ dif_task_params->host_guard_type);
+ SET_FIELD(tdif_context->flags0,
+ TDIF_TASK_CONTEXT_PROTECTIONTYPE,
+ dif_task_params->protection_type);
+ SET_FIELD(tdif_context->flags0,
+ TDIF_TASK_CONTEXT_INITIALREFTAGVALID,
+ dif_task_params->initial_ref_tag_is_valid ? 1 : 0);
+ SET_FIELD(tdif_context->flags0,
+ TDIF_TASK_CONTEXT_KEEPREFTAGCONST,
+ dif_task_params->keep_ref_tag_const ? 1 : 0);
+ SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_VALIDATEGUARD,
+ (dif_task_params->validate_guard &&
+ dif_task_params->dif_on_host) ? 1 : 0);
+ SET_FIELD(tdif_context->flags1,
+ TDIF_TASK_CONTEXT_VALIDATEAPPTAG,
+ (dif_task_params->validate_app_tag &&
+ dif_task_params->dif_on_host) ? 1 : 0);
+ SET_FIELD(tdif_context->flags1,
+ TDIF_TASK_CONTEXT_VALIDATEREFTAG,
+ (dif_task_params->validate_ref_tag &&
+ dif_task_params->dif_on_host) ? 1 : 0);
+ SET_FIELD(tdif_context->flags1,
+ TDIF_TASK_CONTEXT_FORWARDAPPTAGWITHMASK,
+ dif_task_params->forward_app_tag_with_mask ? 1 : 0);
+ SET_FIELD(tdif_context->flags1,
+ TDIF_TASK_CONTEXT_FORWARDREFTAGWITHMASK,
+ dif_task_params->forward_ref_tag_with_mask ? 1 : 0);
+ SET_FIELD(tdif_context->flags1,
+ TDIF_TASK_CONTEXT_REFTAGMASK,
+ dif_task_params->ref_tag_mask);
+ SET_FIELD(tdif_context->flags0,
+ TDIF_TASK_CONTEXT_IGNOREAPPTAG,
+ dif_task_params->ignore_app_tag ? 1 : 0);
+ }
+}
+
+static void set_local_completion_context(struct 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 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;
+
+ 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_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 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 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 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 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;
+}
projects / users / jedix / linux-maple.git / commitdiff