| /* |
| * 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/blkdev.h> |
| #include <scsi/scsi_tcq.h> |
| #include <linux/delay.h> |
| |
| #include "qedi.h" |
| #include "qedi_iscsi.h" |
| #include "qedi_gbl.h" |
| #include "qedi_fw_iscsi.h" |
| #include "qedi_fw_scsi.h" |
| |
| static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn, |
| struct iscsi_task *mtask); |
| |
| void qedi_iscsi_unmap_sg_list(struct qedi_cmd *cmd) |
| { |
| struct scsi_cmnd *sc = cmd->scsi_cmd; |
| |
| if (cmd->io_tbl.sge_valid && sc) { |
| cmd->io_tbl.sge_valid = 0; |
| scsi_dma_unmap(sc); |
| } |
| } |
| |
| static void qedi_process_logout_resp(struct qedi_ctx *qedi, |
| union iscsi_cqe *cqe, |
| struct iscsi_task *task, |
| struct qedi_conn *qedi_conn) |
| { |
| struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
| struct iscsi_logout_rsp *resp_hdr; |
| struct iscsi_session *session = conn->session; |
| struct iscsi_logout_response_hdr *cqe_logout_response; |
| struct qedi_cmd *cmd; |
| |
| cmd = (struct qedi_cmd *)task->dd_data; |
| cqe_logout_response = &cqe->cqe_common.iscsi_hdr.logout_response; |
| spin_lock(&session->back_lock); |
| resp_hdr = (struct iscsi_logout_rsp *)&qedi_conn->gen_pdu.resp_hdr; |
| memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); |
| resp_hdr->opcode = cqe_logout_response->opcode; |
| resp_hdr->flags = cqe_logout_response->flags; |
| resp_hdr->hlength = 0; |
| |
| resp_hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age); |
| resp_hdr->statsn = cpu_to_be32(cqe_logout_response->stat_sn); |
| resp_hdr->exp_cmdsn = cpu_to_be32(cqe_logout_response->exp_cmd_sn); |
| resp_hdr->max_cmdsn = cpu_to_be32(cqe_logout_response->max_cmd_sn); |
| |
| resp_hdr->t2wait = cpu_to_be32(cqe_logout_response->time_2_wait); |
| resp_hdr->t2retain = cpu_to_be32(cqe_logout_response->time_2_retain); |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, |
| "Freeing tid=0x%x for cid=0x%x\n", |
| cmd->task_id, qedi_conn->iscsi_conn_id); |
| |
| spin_lock(&qedi_conn->list_lock); |
| if (likely(cmd->io_cmd_in_list)) { |
| cmd->io_cmd_in_list = false; |
| list_del_init(&cmd->io_cmd); |
| qedi_conn->active_cmd_count--; |
| } else { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n", |
| cmd->task_id, qedi_conn->iscsi_conn_id, |
| &cmd->io_cmd); |
| } |
| spin_unlock(&qedi_conn->list_lock); |
| |
| cmd->state = RESPONSE_RECEIVED; |
| qedi_clear_task_idx(qedi, cmd->task_id); |
| __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); |
| |
| spin_unlock(&session->back_lock); |
| } |
| |
| static void qedi_process_text_resp(struct qedi_ctx *qedi, |
| union iscsi_cqe *cqe, |
| struct iscsi_task *task, |
| struct qedi_conn *qedi_conn) |
| { |
| struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
| struct iscsi_session *session = conn->session; |
| struct e4_iscsi_task_context *task_ctx; |
| struct iscsi_text_rsp *resp_hdr_ptr; |
| struct iscsi_text_response_hdr *cqe_text_response; |
| struct qedi_cmd *cmd; |
| int pld_len; |
| |
| cmd = (struct qedi_cmd *)task->dd_data; |
| task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id); |
| |
| cqe_text_response = &cqe->cqe_common.iscsi_hdr.text_response; |
| spin_lock(&session->back_lock); |
| resp_hdr_ptr = (struct iscsi_text_rsp *)&qedi_conn->gen_pdu.resp_hdr; |
| memset(resp_hdr_ptr, 0, sizeof(struct iscsi_hdr)); |
| resp_hdr_ptr->opcode = cqe_text_response->opcode; |
| resp_hdr_ptr->flags = cqe_text_response->flags; |
| resp_hdr_ptr->hlength = 0; |
| |
| hton24(resp_hdr_ptr->dlength, |
| (cqe_text_response->hdr_second_dword & |
| ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK)); |
| |
| resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid, |
| conn->session->age); |
| resp_hdr_ptr->ttt = cqe_text_response->ttt; |
| resp_hdr_ptr->statsn = cpu_to_be32(cqe_text_response->stat_sn); |
| resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_text_response->exp_cmd_sn); |
| resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_text_response->max_cmd_sn); |
| |
| pld_len = cqe_text_response->hdr_second_dword & |
| ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK; |
| qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len; |
| |
| memset(task_ctx, '\0', sizeof(*task_ctx)); |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, |
| "Freeing tid=0x%x for cid=0x%x\n", |
| cmd->task_id, qedi_conn->iscsi_conn_id); |
| |
| spin_lock(&qedi_conn->list_lock); |
| if (likely(cmd->io_cmd_in_list)) { |
| cmd->io_cmd_in_list = false; |
| list_del_init(&cmd->io_cmd); |
| qedi_conn->active_cmd_count--; |
| } else { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n", |
| cmd->task_id, qedi_conn->iscsi_conn_id, |
| &cmd->io_cmd); |
| } |
| spin_unlock(&qedi_conn->list_lock); |
| |
| cmd->state = RESPONSE_RECEIVED; |
| qedi_clear_task_idx(qedi, cmd->task_id); |
| |
| __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, |
| qedi_conn->gen_pdu.resp_buf, |
| (qedi_conn->gen_pdu.resp_wr_ptr - |
| qedi_conn->gen_pdu.resp_buf)); |
| spin_unlock(&session->back_lock); |
| } |
| |
| static void qedi_tmf_resp_work(struct work_struct *work) |
| { |
| struct qedi_cmd *qedi_cmd = |
| container_of(work, struct qedi_cmd, tmf_work); |
| struct qedi_conn *qedi_conn = qedi_cmd->conn; |
| struct qedi_ctx *qedi = qedi_conn->qedi; |
| struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
| struct iscsi_session *session = conn->session; |
| struct iscsi_tm_rsp *resp_hdr_ptr; |
| struct iscsi_cls_session *cls_sess; |
| int rval = 0; |
| |
| set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); |
| resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf; |
| cls_sess = iscsi_conn_to_session(qedi_conn->cls_conn); |
| |
| iscsi_block_session(session->cls_session); |
| rval = qedi_cleanup_all_io(qedi, qedi_conn, qedi_cmd->task, true); |
| if (rval) { |
| qedi_clear_task_idx(qedi, qedi_cmd->task_id); |
| iscsi_unblock_session(session->cls_session); |
| goto exit_tmf_resp; |
| } |
| |
| iscsi_unblock_session(session->cls_session); |
| qedi_clear_task_idx(qedi, qedi_cmd->task_id); |
| |
| spin_lock(&session->back_lock); |
| __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0); |
| spin_unlock(&session->back_lock); |
| |
| exit_tmf_resp: |
| kfree(resp_hdr_ptr); |
| clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); |
| } |
| |
| static void qedi_process_tmf_resp(struct qedi_ctx *qedi, |
| union iscsi_cqe *cqe, |
| struct iscsi_task *task, |
| struct qedi_conn *qedi_conn) |
| |
| { |
| struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
| struct iscsi_session *session = conn->session; |
| struct iscsi_tmf_response_hdr *cqe_tmp_response; |
| struct iscsi_tm_rsp *resp_hdr_ptr; |
| struct iscsi_tm *tmf_hdr; |
| struct qedi_cmd *qedi_cmd = NULL; |
| |
| cqe_tmp_response = &cqe->cqe_common.iscsi_hdr.tmf_response; |
| |
| qedi_cmd = task->dd_data; |
| qedi_cmd->tmf_resp_buf = kzalloc(sizeof(*resp_hdr_ptr), GFP_ATOMIC); |
| if (!qedi_cmd->tmf_resp_buf) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Failed to allocate resp buf, cid=0x%x\n", |
| qedi_conn->iscsi_conn_id); |
| return; |
| } |
| |
| spin_lock(&session->back_lock); |
| resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf; |
| memset(resp_hdr_ptr, 0, sizeof(struct iscsi_tm_rsp)); |
| |
| /* Fill up the header */ |
| resp_hdr_ptr->opcode = cqe_tmp_response->opcode; |
| resp_hdr_ptr->flags = cqe_tmp_response->hdr_flags; |
| resp_hdr_ptr->response = cqe_tmp_response->hdr_response; |
| resp_hdr_ptr->hlength = 0; |
| |
| hton24(resp_hdr_ptr->dlength, |
| (cqe_tmp_response->hdr_second_dword & |
| ISCSI_TMF_RESPONSE_HDR_DATA_SEG_LEN_MASK)); |
| resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid, |
| conn->session->age); |
| resp_hdr_ptr->statsn = cpu_to_be32(cqe_tmp_response->stat_sn); |
| resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_tmp_response->exp_cmd_sn); |
| resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_tmp_response->max_cmd_sn); |
| |
| tmf_hdr = (struct iscsi_tm *)qedi_cmd->task->hdr; |
| |
| spin_lock(&qedi_conn->list_lock); |
| if (likely(qedi_cmd->io_cmd_in_list)) { |
| qedi_cmd->io_cmd_in_list = false; |
| list_del_init(&qedi_cmd->io_cmd); |
| qedi_conn->active_cmd_count--; |
| } |
| spin_unlock(&qedi_conn->list_lock); |
| |
| if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == |
| ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) || |
| ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == |
| ISCSI_TM_FUNC_TARGET_WARM_RESET) || |
| ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == |
| ISCSI_TM_FUNC_TARGET_COLD_RESET)) { |
| INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_resp_work); |
| queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work); |
| goto unblock_sess; |
| } |
| |
| qedi_clear_task_idx(qedi, qedi_cmd->task_id); |
| |
| __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0); |
| kfree(resp_hdr_ptr); |
| |
| unblock_sess: |
| spin_unlock(&session->back_lock); |
| } |
| |
| static void qedi_process_login_resp(struct qedi_ctx *qedi, |
| union iscsi_cqe *cqe, |
| struct iscsi_task *task, |
| struct qedi_conn *qedi_conn) |
| { |
| struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
| struct iscsi_session *session = conn->session; |
| struct e4_iscsi_task_context *task_ctx; |
| struct iscsi_login_rsp *resp_hdr_ptr; |
| struct iscsi_login_response_hdr *cqe_login_response; |
| struct qedi_cmd *cmd; |
| int pld_len; |
| |
| cmd = (struct qedi_cmd *)task->dd_data; |
| |
| cqe_login_response = &cqe->cqe_common.iscsi_hdr.login_response; |
| task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id); |
| |
| spin_lock(&session->back_lock); |
| resp_hdr_ptr = (struct iscsi_login_rsp *)&qedi_conn->gen_pdu.resp_hdr; |
| memset(resp_hdr_ptr, 0, sizeof(struct iscsi_login_rsp)); |
| resp_hdr_ptr->opcode = cqe_login_response->opcode; |
| resp_hdr_ptr->flags = cqe_login_response->flags_attr; |
| resp_hdr_ptr->hlength = 0; |
| |
| hton24(resp_hdr_ptr->dlength, |
| (cqe_login_response->hdr_second_dword & |
| ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK)); |
| resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid, |
| conn->session->age); |
| resp_hdr_ptr->tsih = cqe_login_response->tsih; |
| resp_hdr_ptr->statsn = cpu_to_be32(cqe_login_response->stat_sn); |
| resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_login_response->exp_cmd_sn); |
| resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_login_response->max_cmd_sn); |
| resp_hdr_ptr->status_class = cqe_login_response->status_class; |
| resp_hdr_ptr->status_detail = cqe_login_response->status_detail; |
| pld_len = cqe_login_response->hdr_second_dword & |
| ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK; |
| qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len; |
| |
| spin_lock(&qedi_conn->list_lock); |
| if (likely(cmd->io_cmd_in_list)) { |
| cmd->io_cmd_in_list = false; |
| list_del_init(&cmd->io_cmd); |
| qedi_conn->active_cmd_count--; |
| } |
| spin_unlock(&qedi_conn->list_lock); |
| |
| memset(task_ctx, '\0', sizeof(*task_ctx)); |
| |
| __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, |
| qedi_conn->gen_pdu.resp_buf, |
| (qedi_conn->gen_pdu.resp_wr_ptr - |
| qedi_conn->gen_pdu.resp_buf)); |
| |
| spin_unlock(&session->back_lock); |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, |
| "Freeing tid=0x%x for cid=0x%x\n", |
| cmd->task_id, qedi_conn->iscsi_conn_id); |
| cmd->state = RESPONSE_RECEIVED; |
| qedi_clear_task_idx(qedi, cmd->task_id); |
| } |
| |
| static void qedi_get_rq_bdq_buf(struct qedi_ctx *qedi, |
| struct iscsi_cqe_unsolicited *cqe, |
| char *ptr, int len) |
| { |
| u16 idx = 0; |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
| "pld_len [%d], bdq_prod_idx [%d], idx [%d]\n", |
| len, qedi->bdq_prod_idx, |
| (qedi->bdq_prod_idx % qedi->rq_num_entries)); |
| |
| /* Obtain buffer address from rqe_opaque */ |
| idx = cqe->rqe_opaque; |
| if (idx > (QEDI_BDQ_NUM - 1)) { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
| "wrong idx %d returned by FW, dropping the unsolicited pkt\n", |
| idx); |
| return; |
| } |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
| "rqe_opaque [0x%p], idx [%d]\n", cqe->rqe_opaque, idx); |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
| "unsol_cqe_type = %d\n", cqe->unsol_cqe_type); |
| switch (cqe->unsol_cqe_type) { |
| case ISCSI_CQE_UNSOLICITED_SINGLE: |
| case ISCSI_CQE_UNSOLICITED_FIRST: |
| if (len) |
| memcpy(ptr, (void *)qedi->bdq[idx].buf_addr, len); |
| break; |
| case ISCSI_CQE_UNSOLICITED_MIDDLE: |
| case ISCSI_CQE_UNSOLICITED_LAST: |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static void qedi_put_rq_bdq_buf(struct qedi_ctx *qedi, |
| struct iscsi_cqe_unsolicited *cqe, |
| int count) |
| { |
| u16 tmp; |
| u16 idx = 0; |
| struct scsi_bd *pbl; |
| |
| /* Obtain buffer address from rqe_opaque */ |
| idx = cqe->rqe_opaque; |
| if (idx > (QEDI_BDQ_NUM - 1)) { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
| "wrong idx %d returned by FW, dropping the unsolicited pkt\n", |
| idx); |
| return; |
| } |
| |
| pbl = (struct scsi_bd *)qedi->bdq_pbl; |
| pbl += (qedi->bdq_prod_idx % qedi->rq_num_entries); |
| pbl->address.hi = cpu_to_le32(QEDI_U64_HI(qedi->bdq[idx].buf_dma)); |
| pbl->address.lo = cpu_to_le32(QEDI_U64_LO(qedi->bdq[idx].buf_dma)); |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
| "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx] idx [%d]\n", |
| pbl, pbl->address.hi, pbl->address.lo, idx); |
| pbl->opaque.iscsi_opaque.reserved_zero[0] = 0; |
| pbl->opaque.iscsi_opaque.reserved_zero[1] = 0; |
| pbl->opaque.iscsi_opaque.reserved_zero[2] = 0; |
| pbl->opaque.iscsi_opaque.opaque = cpu_to_le32(idx); |
| |
| /* Increment producer to let f/w know we've handled the frame */ |
| qedi->bdq_prod_idx += count; |
| |
| writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod); |
| tmp = readw(qedi->bdq_primary_prod); |
| |
| writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod); |
| tmp = readw(qedi->bdq_secondary_prod); |
| } |
| |
| static void qedi_unsol_pdu_adjust_bdq(struct qedi_ctx *qedi, |
| struct iscsi_cqe_unsolicited *cqe, |
| u32 pdu_len, u32 num_bdqs, |
| char *bdq_data) |
| { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
| "num_bdqs [%d]\n", num_bdqs); |
| |
| qedi_get_rq_bdq_buf(qedi, cqe, bdq_data, pdu_len); |
| qedi_put_rq_bdq_buf(qedi, cqe, (num_bdqs + 1)); |
| } |
| |
| static int qedi_process_nopin_mesg(struct qedi_ctx *qedi, |
| union iscsi_cqe *cqe, |
| struct iscsi_task *task, |
| struct qedi_conn *qedi_conn, u16 que_idx) |
| { |
| struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
| struct iscsi_session *session = conn->session; |
| struct iscsi_nop_in_hdr *cqe_nop_in; |
| struct iscsi_nopin *hdr; |
| struct qedi_cmd *cmd; |
| int tgt_async_nop = 0; |
| u32 lun[2]; |
| u32 pdu_len, num_bdqs; |
| char bdq_data[QEDI_BDQ_BUF_SIZE]; |
| unsigned long flags; |
| |
| spin_lock_bh(&session->back_lock); |
| cqe_nop_in = &cqe->cqe_common.iscsi_hdr.nop_in; |
| |
| pdu_len = cqe_nop_in->hdr_second_dword & |
| ISCSI_NOP_IN_HDR_DATA_SEG_LEN_MASK; |
| num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE; |
| |
| hdr = (struct iscsi_nopin *)&qedi_conn->gen_pdu.resp_hdr; |
| memset(hdr, 0, sizeof(struct iscsi_hdr)); |
| hdr->opcode = cqe_nop_in->opcode; |
| hdr->max_cmdsn = cpu_to_be32(cqe_nop_in->max_cmd_sn); |
| hdr->exp_cmdsn = cpu_to_be32(cqe_nop_in->exp_cmd_sn); |
| hdr->statsn = cpu_to_be32(cqe_nop_in->stat_sn); |
| hdr->ttt = cpu_to_be32(cqe_nop_in->ttt); |
| |
| if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) { |
| spin_lock_irqsave(&qedi->hba_lock, flags); |
| qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited, |
| pdu_len, num_bdqs, bdq_data); |
| hdr->itt = RESERVED_ITT; |
| tgt_async_nop = 1; |
| spin_unlock_irqrestore(&qedi->hba_lock, flags); |
| goto done; |
| } |
| |
| /* Response to one of our nop-outs */ |
| if (task) { |
| cmd = task->dd_data; |
| hdr->flags = ISCSI_FLAG_CMD_FINAL; |
| hdr->itt = build_itt(cqe->cqe_solicited.itid, |
| conn->session->age); |
| lun[0] = 0xffffffff; |
| lun[1] = 0xffffffff; |
| memcpy(&hdr->lun, lun, sizeof(struct scsi_lun)); |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, |
| "Freeing tid=0x%x for cid=0x%x\n", |
| cmd->task_id, qedi_conn->iscsi_conn_id); |
| cmd->state = RESPONSE_RECEIVED; |
| spin_lock(&qedi_conn->list_lock); |
| if (likely(cmd->io_cmd_in_list)) { |
| cmd->io_cmd_in_list = false; |
| list_del_init(&cmd->io_cmd); |
| qedi_conn->active_cmd_count--; |
| } |
| |
| spin_unlock(&qedi_conn->list_lock); |
| qedi_clear_task_idx(qedi, cmd->task_id); |
| } |
| |
| done: |
| __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, bdq_data, pdu_len); |
| |
| spin_unlock_bh(&session->back_lock); |
| return tgt_async_nop; |
| } |
| |
| static void qedi_process_async_mesg(struct qedi_ctx *qedi, |
| union iscsi_cqe *cqe, |
| struct iscsi_task *task, |
| struct qedi_conn *qedi_conn, |
| u16 que_idx) |
| { |
| struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
| struct iscsi_session *session = conn->session; |
| struct iscsi_async_msg_hdr *cqe_async_msg; |
| struct iscsi_async *resp_hdr; |
| u32 lun[2]; |
| u32 pdu_len, num_bdqs; |
| char bdq_data[QEDI_BDQ_BUF_SIZE]; |
| unsigned long flags; |
| |
| spin_lock_bh(&session->back_lock); |
| |
| cqe_async_msg = &cqe->cqe_common.iscsi_hdr.async_msg; |
| pdu_len = cqe_async_msg->hdr_second_dword & |
| ISCSI_ASYNC_MSG_HDR_DATA_SEG_LEN_MASK; |
| num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE; |
| |
| if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) { |
| spin_lock_irqsave(&qedi->hba_lock, flags); |
| qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited, |
| pdu_len, num_bdqs, bdq_data); |
| spin_unlock_irqrestore(&qedi->hba_lock, flags); |
| } |
| |
| resp_hdr = (struct iscsi_async *)&qedi_conn->gen_pdu.resp_hdr; |
| memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); |
| resp_hdr->opcode = cqe_async_msg->opcode; |
| resp_hdr->flags = 0x80; |
| |
| lun[0] = cpu_to_be32(cqe_async_msg->lun.lo); |
| lun[1] = cpu_to_be32(cqe_async_msg->lun.hi); |
| memcpy(&resp_hdr->lun, lun, sizeof(struct scsi_lun)); |
| resp_hdr->exp_cmdsn = cpu_to_be32(cqe_async_msg->exp_cmd_sn); |
| resp_hdr->max_cmdsn = cpu_to_be32(cqe_async_msg->max_cmd_sn); |
| resp_hdr->statsn = cpu_to_be32(cqe_async_msg->stat_sn); |
| |
| resp_hdr->async_event = cqe_async_msg->async_event; |
| resp_hdr->async_vcode = cqe_async_msg->async_vcode; |
| |
| resp_hdr->param1 = cpu_to_be16(cqe_async_msg->param1_rsrv); |
| resp_hdr->param2 = cpu_to_be16(cqe_async_msg->param2_rsrv); |
| resp_hdr->param3 = cpu_to_be16(cqe_async_msg->param3_rsrv); |
| |
| __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, bdq_data, |
| pdu_len); |
| |
| spin_unlock_bh(&session->back_lock); |
| } |
| |
| static void qedi_process_reject_mesg(struct qedi_ctx *qedi, |
| union iscsi_cqe *cqe, |
| struct iscsi_task *task, |
| struct qedi_conn *qedi_conn, |
| uint16_t que_idx) |
| { |
| struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
| struct iscsi_session *session = conn->session; |
| struct iscsi_reject_hdr *cqe_reject; |
| struct iscsi_reject *hdr; |
| u32 pld_len, num_bdqs; |
| unsigned long flags; |
| |
| spin_lock_bh(&session->back_lock); |
| cqe_reject = &cqe->cqe_common.iscsi_hdr.reject; |
| pld_len = cqe_reject->hdr_second_dword & |
| ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK; |
| num_bdqs = pld_len / QEDI_BDQ_BUF_SIZE; |
| |
| if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) { |
| spin_lock_irqsave(&qedi->hba_lock, flags); |
| qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited, |
| pld_len, num_bdqs, conn->data); |
| spin_unlock_irqrestore(&qedi->hba_lock, flags); |
| } |
| hdr = (struct iscsi_reject *)&qedi_conn->gen_pdu.resp_hdr; |
| memset(hdr, 0, sizeof(struct iscsi_hdr)); |
| hdr->opcode = cqe_reject->opcode; |
| hdr->reason = cqe_reject->hdr_reason; |
| hdr->flags = cqe_reject->hdr_flags; |
| hton24(hdr->dlength, (cqe_reject->hdr_second_dword & |
| ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK)); |
| hdr->max_cmdsn = cpu_to_be32(cqe_reject->max_cmd_sn); |
| hdr->exp_cmdsn = cpu_to_be32(cqe_reject->exp_cmd_sn); |
| hdr->statsn = cpu_to_be32(cqe_reject->stat_sn); |
| hdr->ffffffff = cpu_to_be32(0xffffffff); |
| |
| __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, |
| conn->data, pld_len); |
| spin_unlock_bh(&session->back_lock); |
| } |
| |
| static void qedi_scsi_completion(struct qedi_ctx *qedi, |
| union iscsi_cqe *cqe, |
| struct iscsi_task *task, |
| struct iscsi_conn *conn) |
| { |
| struct scsi_cmnd *sc_cmd; |
| struct qedi_cmd *cmd = task->dd_data; |
| struct iscsi_session *session = conn->session; |
| struct iscsi_scsi_rsp *hdr; |
| struct iscsi_data_in_hdr *cqe_data_in; |
| int datalen = 0; |
| struct qedi_conn *qedi_conn; |
| u32 iscsi_cid; |
| u8 cqe_err_bits = 0; |
| |
| iscsi_cid = cqe->cqe_common.conn_id; |
| qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; |
| |
| cqe_data_in = &cqe->cqe_common.iscsi_hdr.data_in; |
| cqe_err_bits = |
| cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits; |
| |
| spin_lock_bh(&session->back_lock); |
| /* get the scsi command */ |
| sc_cmd = cmd->scsi_cmd; |
| |
| if (!sc_cmd) { |
| QEDI_WARN(&qedi->dbg_ctx, "sc_cmd is NULL!\n"); |
| goto error; |
| } |
| |
| if (!sc_cmd->SCp.ptr) { |
| QEDI_WARN(&qedi->dbg_ctx, |
| "SCp.ptr is NULL, returned in another context.\n"); |
| goto error; |
| } |
| |
| if (!sc_cmd->request) { |
| QEDI_WARN(&qedi->dbg_ctx, |
| "sc_cmd->request is NULL, sc_cmd=%p.\n", |
| sc_cmd); |
| goto error; |
| } |
| |
| if (!sc_cmd->request->special) { |
| QEDI_WARN(&qedi->dbg_ctx, |
| "request->special is NULL so request not valid, sc_cmd=%p.\n", |
| sc_cmd); |
| goto error; |
| } |
| |
| if (!sc_cmd->request->q) { |
| QEDI_WARN(&qedi->dbg_ctx, |
| "request->q is NULL so request is not valid, sc_cmd=%p.\n", |
| sc_cmd); |
| goto error; |
| } |
| |
| qedi_iscsi_unmap_sg_list(cmd); |
| |
| hdr = (struct iscsi_scsi_rsp *)task->hdr; |
| hdr->opcode = cqe_data_in->opcode; |
| hdr->max_cmdsn = cpu_to_be32(cqe_data_in->max_cmd_sn); |
| hdr->exp_cmdsn = cpu_to_be32(cqe_data_in->exp_cmd_sn); |
| hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age); |
| hdr->response = cqe_data_in->reserved1; |
| hdr->cmd_status = cqe_data_in->status_rsvd; |
| hdr->flags = cqe_data_in->flags; |
| hdr->residual_count = cpu_to_be32(cqe_data_in->residual_count); |
| |
| if (hdr->cmd_status == SAM_STAT_CHECK_CONDITION) { |
| datalen = cqe_data_in->reserved2 & |
| ISCSI_COMMON_HDR_DATA_SEG_LEN_MASK; |
| memcpy((char *)conn->data, (char *)cmd->sense_buffer, datalen); |
| } |
| |
| /* If f/w reports data underrun err then set residual to IO transfer |
| * length, set Underrun flag and clear Overrun flag explicitly |
| */ |
| if (unlikely(cqe_err_bits && |
| GET_FIELD(cqe_err_bits, CQE_ERROR_BITMAP_UNDER_RUN_ERR))) { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "Under flow itt=0x%x proto flags=0x%x tid=0x%x cid 0x%x fw resid 0x%x sc dlen 0x%x\n", |
| hdr->itt, cqe_data_in->flags, cmd->task_id, |
| qedi_conn->iscsi_conn_id, hdr->residual_count, |
| scsi_bufflen(sc_cmd)); |
| hdr->residual_count = cpu_to_be32(scsi_bufflen(sc_cmd)); |
| hdr->flags |= ISCSI_FLAG_CMD_UNDERFLOW; |
| hdr->flags &= (~ISCSI_FLAG_CMD_OVERFLOW); |
| } |
| |
| spin_lock(&qedi_conn->list_lock); |
| if (likely(cmd->io_cmd_in_list)) { |
| cmd->io_cmd_in_list = false; |
| list_del_init(&cmd->io_cmd); |
| qedi_conn->active_cmd_count--; |
| } |
| spin_unlock(&qedi_conn->list_lock); |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, |
| "Freeing tid=0x%x for cid=0x%x\n", |
| cmd->task_id, qedi_conn->iscsi_conn_id); |
| cmd->state = RESPONSE_RECEIVED; |
| if (qedi_io_tracing) |
| qedi_trace_io(qedi, task, cmd->task_id, QEDI_IO_TRACE_RSP); |
| |
| qedi_clear_task_idx(qedi, cmd->task_id); |
| __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, |
| conn->data, datalen); |
| error: |
| spin_unlock_bh(&session->back_lock); |
| } |
| |
| static void qedi_mtask_completion(struct qedi_ctx *qedi, |
| union iscsi_cqe *cqe, |
| struct iscsi_task *task, |
| struct qedi_conn *conn, uint16_t que_idx) |
| { |
| struct iscsi_conn *iscsi_conn; |
| u32 hdr_opcode; |
| |
| hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte; |
| iscsi_conn = conn->cls_conn->dd_data; |
| |
| switch (hdr_opcode) { |
| case ISCSI_OPCODE_SCSI_RESPONSE: |
| case ISCSI_OPCODE_DATA_IN: |
| qedi_scsi_completion(qedi, cqe, task, iscsi_conn); |
| break; |
| case ISCSI_OPCODE_LOGIN_RESPONSE: |
| qedi_process_login_resp(qedi, cqe, task, conn); |
| break; |
| case ISCSI_OPCODE_TMF_RESPONSE: |
| qedi_process_tmf_resp(qedi, cqe, task, conn); |
| break; |
| case ISCSI_OPCODE_TEXT_RESPONSE: |
| qedi_process_text_resp(qedi, cqe, task, conn); |
| break; |
| case ISCSI_OPCODE_LOGOUT_RESPONSE: |
| qedi_process_logout_resp(qedi, cqe, task, conn); |
| break; |
| case ISCSI_OPCODE_NOP_IN: |
| qedi_process_nopin_mesg(qedi, cqe, task, conn, que_idx); |
| break; |
| default: |
| QEDI_ERR(&qedi->dbg_ctx, "unknown opcode\n"); |
| } |
| } |
| |
| static void qedi_process_nopin_local_cmpl(struct qedi_ctx *qedi, |
| struct iscsi_cqe_solicited *cqe, |
| struct iscsi_task *task, |
| struct qedi_conn *qedi_conn) |
| { |
| struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
| struct iscsi_session *session = conn->session; |
| struct qedi_cmd *cmd = task->dd_data; |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UNSOL, |
| "itid=0x%x, cmd task id=0x%x\n", |
| cqe->itid, cmd->task_id); |
| |
| cmd->state = RESPONSE_RECEIVED; |
| qedi_clear_task_idx(qedi, cmd->task_id); |
| |
| spin_lock_bh(&session->back_lock); |
| __iscsi_put_task(task); |
| spin_unlock_bh(&session->back_lock); |
| } |
| |
| static void qedi_process_cmd_cleanup_resp(struct qedi_ctx *qedi, |
| struct iscsi_cqe_solicited *cqe, |
| struct iscsi_task *task, |
| struct iscsi_conn *conn) |
| { |
| struct qedi_work_map *work, *work_tmp; |
| u32 proto_itt = cqe->itid; |
| u32 ptmp_itt = 0; |
| itt_t protoitt = 0; |
| int found = 0; |
| struct qedi_cmd *qedi_cmd = NULL; |
| u32 rtid = 0; |
| u32 iscsi_cid; |
| struct qedi_conn *qedi_conn; |
| struct qedi_cmd *dbg_cmd; |
| struct iscsi_task *mtask; |
| struct iscsi_tm *tmf_hdr = NULL; |
| |
| iscsi_cid = cqe->conn_id; |
| qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; |
| if (!qedi_conn) { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "icid not found 0x%x\n", cqe->conn_id); |
| return; |
| } |
| |
| /* Based on this itt get the corresponding qedi_cmd */ |
| spin_lock_bh(&qedi_conn->tmf_work_lock); |
| list_for_each_entry_safe(work, work_tmp, &qedi_conn->tmf_work_list, |
| list) { |
| if (work->rtid == proto_itt) { |
| /* We found the command */ |
| qedi_cmd = work->qedi_cmd; |
| if (!qedi_cmd->list_tmf_work) { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
| "TMF work not found, cqe->tid=0x%x, cid=0x%x\n", |
| proto_itt, qedi_conn->iscsi_conn_id); |
| WARN_ON(1); |
| } |
| found = 1; |
| mtask = qedi_cmd->task; |
| tmf_hdr = (struct iscsi_tm *)mtask->hdr; |
| rtid = work->rtid; |
| |
| list_del_init(&work->list); |
| kfree(work); |
| qedi_cmd->list_tmf_work = NULL; |
| } |
| } |
| spin_unlock_bh(&qedi_conn->tmf_work_lock); |
| |
| if (found) { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
| "TMF work, cqe->tid=0x%x, tmf flags=0x%x, cid=0x%x\n", |
| proto_itt, tmf_hdr->flags, qedi_conn->iscsi_conn_id); |
| |
| if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == |
| ISCSI_TM_FUNC_ABORT_TASK) { |
| spin_lock_bh(&conn->session->back_lock); |
| |
| protoitt = build_itt(get_itt(tmf_hdr->rtt), |
| conn->session->age); |
| task = iscsi_itt_to_task(conn, protoitt); |
| |
| spin_unlock_bh(&conn->session->back_lock); |
| |
| if (!task) { |
| QEDI_NOTICE(&qedi->dbg_ctx, |
| "IO task completed, tmf rtt=0x%x, cid=0x%x\n", |
| get_itt(tmf_hdr->rtt), |
| qedi_conn->iscsi_conn_id); |
| return; |
| } |
| |
| dbg_cmd = task->dd_data; |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
| "Abort tmf rtt=0x%x, i/o itt=0x%x, i/o tid=0x%x, cid=0x%x\n", |
| get_itt(tmf_hdr->rtt), get_itt(task->itt), |
| dbg_cmd->task_id, qedi_conn->iscsi_conn_id); |
| |
| if (qedi_cmd->state == CLEANUP_WAIT_FAILED) |
| qedi_cmd->state = CLEANUP_RECV; |
| |
| qedi_clear_task_idx(qedi_conn->qedi, rtid); |
| |
| spin_lock(&qedi_conn->list_lock); |
| if (likely(dbg_cmd->io_cmd_in_list)) { |
| dbg_cmd->io_cmd_in_list = false; |
| list_del_init(&dbg_cmd->io_cmd); |
| qedi_conn->active_cmd_count--; |
| } |
| spin_unlock(&qedi_conn->list_lock); |
| qedi_cmd->state = CLEANUP_RECV; |
| wake_up_interruptible(&qedi_conn->wait_queue); |
| } |
| } else if (qedi_conn->cmd_cleanup_req > 0) { |
| spin_lock_bh(&conn->session->back_lock); |
| qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt); |
| protoitt = build_itt(ptmp_itt, conn->session->age); |
| task = iscsi_itt_to_task(conn, protoitt); |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
| "cleanup io itid=0x%x, protoitt=0x%x, cmd_cleanup_cmpl=%d, cid=0x%x\n", |
| cqe->itid, protoitt, qedi_conn->cmd_cleanup_cmpl, |
| qedi_conn->iscsi_conn_id); |
| |
| spin_unlock_bh(&conn->session->back_lock); |
| if (!task) { |
| QEDI_NOTICE(&qedi->dbg_ctx, |
| "task is null, itid=0x%x, cid=0x%x\n", |
| cqe->itid, qedi_conn->iscsi_conn_id); |
| return; |
| } |
| qedi_conn->cmd_cleanup_cmpl++; |
| wake_up(&qedi_conn->wait_queue); |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, |
| "Freeing tid=0x%x for cid=0x%x\n", |
| cqe->itid, qedi_conn->iscsi_conn_id); |
| qedi_clear_task_idx(qedi_conn->qedi, cqe->itid); |
| |
| } else { |
| qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt); |
| protoitt = build_itt(ptmp_itt, conn->session->age); |
| task = iscsi_itt_to_task(conn, protoitt); |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Delayed or untracked cleanup response, itt=0x%x, tid=0x%x, cid=0x%x, task=%p\n", |
| protoitt, cqe->itid, qedi_conn->iscsi_conn_id, task); |
| } |
| } |
| |
| void qedi_fp_process_cqes(struct qedi_work *work) |
| { |
| struct qedi_ctx *qedi = work->qedi; |
| union iscsi_cqe *cqe = &work->cqe; |
| struct iscsi_task *task = NULL; |
| struct iscsi_nopout *nopout_hdr; |
| struct qedi_conn *q_conn; |
| struct iscsi_conn *conn; |
| struct qedi_cmd *qedi_cmd; |
| u32 comp_type; |
| u32 iscsi_cid; |
| u32 hdr_opcode; |
| u16 que_idx = work->que_idx; |
| u8 cqe_err_bits = 0; |
| |
| comp_type = cqe->cqe_common.cqe_type; |
| hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte; |
| cqe_err_bits = |
| cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits; |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
| "fw_cid=0x%x, cqe type=0x%x, opcode=0x%x\n", |
| cqe->cqe_common.conn_id, comp_type, hdr_opcode); |
| |
| if (comp_type >= MAX_ISCSI_CQES_TYPE) { |
| QEDI_WARN(&qedi->dbg_ctx, "Invalid CqE type\n"); |
| return; |
| } |
| |
| iscsi_cid = cqe->cqe_common.conn_id; |
| q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; |
| if (!q_conn) { |
| QEDI_WARN(&qedi->dbg_ctx, |
| "Session no longer exists for cid=0x%x!!\n", |
| iscsi_cid); |
| return; |
| } |
| |
| conn = q_conn->cls_conn->dd_data; |
| |
| if (unlikely(cqe_err_bits && |
| GET_FIELD(cqe_err_bits, |
| CQE_ERROR_BITMAP_DATA_DIGEST_ERR))) { |
| iscsi_conn_failure(conn, ISCSI_ERR_DATA_DGST); |
| return; |
| } |
| |
| switch (comp_type) { |
| case ISCSI_CQE_TYPE_SOLICITED: |
| case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: |
| qedi_cmd = container_of(work, struct qedi_cmd, cqe_work); |
| task = qedi_cmd->task; |
| if (!task) { |
| QEDI_WARN(&qedi->dbg_ctx, "task is NULL\n"); |
| return; |
| } |
| |
| /* Process NOPIN local completion */ |
| nopout_hdr = (struct iscsi_nopout *)task->hdr; |
| if ((nopout_hdr->itt == RESERVED_ITT) && |
| (cqe->cqe_solicited.itid != (u16)RESERVED_ITT)) { |
| qedi_process_nopin_local_cmpl(qedi, &cqe->cqe_solicited, |
| task, q_conn); |
| } else { |
| cqe->cqe_solicited.itid = |
| qedi_get_itt(cqe->cqe_solicited); |
| /* Process other solicited responses */ |
| qedi_mtask_completion(qedi, cqe, task, q_conn, que_idx); |
| } |
| break; |
| case ISCSI_CQE_TYPE_UNSOLICITED: |
| switch (hdr_opcode) { |
| case ISCSI_OPCODE_NOP_IN: |
| qedi_process_nopin_mesg(qedi, cqe, task, q_conn, |
| que_idx); |
| break; |
| case ISCSI_OPCODE_ASYNC_MSG: |
| qedi_process_async_mesg(qedi, cqe, task, q_conn, |
| que_idx); |
| break; |
| case ISCSI_OPCODE_REJECT: |
| qedi_process_reject_mesg(qedi, cqe, task, q_conn, |
| que_idx); |
| break; |
| } |
| goto exit_fp_process; |
| case ISCSI_CQE_TYPE_DUMMY: |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "Dummy CqE\n"); |
| goto exit_fp_process; |
| case ISCSI_CQE_TYPE_TASK_CLEANUP: |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "CleanUp CqE\n"); |
| qedi_process_cmd_cleanup_resp(qedi, &cqe->cqe_solicited, task, |
| conn); |
| goto exit_fp_process; |
| default: |
| QEDI_ERR(&qedi->dbg_ctx, "Error cqe.\n"); |
| break; |
| } |
| |
| exit_fp_process: |
| return; |
| } |
| |
| static void qedi_ring_doorbell(struct qedi_conn *qedi_conn) |
| { |
| struct iscsi_db_data dbell = { 0 }; |
| |
| dbell.agg_flags = 0; |
| |
| dbell.params |= DB_DEST_XCM << ISCSI_DB_DATA_DEST_SHIFT; |
| dbell.params |= DB_AGG_CMD_SET << ISCSI_DB_DATA_AGG_CMD_SHIFT; |
| dbell.params |= |
| DQ_XCM_ISCSI_SQ_PROD_CMD << ISCSI_DB_DATA_AGG_VAL_SEL_SHIFT; |
| |
| dbell.sq_prod = qedi_conn->ep->fw_sq_prod_idx; |
| writel(*(u32 *)&dbell, qedi_conn->ep->p_doorbell); |
| |
| /* Make sure fw write idx is coherent, and include both memory barriers |
| * as a failsafe as for some architectures the call is the same but on |
| * others they are two different assembly operations. |
| */ |
| wmb(); |
| mmiowb(); |
| QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_MP_REQ, |
| "prod_idx=0x%x, fw_prod_idx=0x%x, cid=0x%x\n", |
| qedi_conn->ep->sq_prod_idx, qedi_conn->ep->fw_sq_prod_idx, |
| qedi_conn->iscsi_conn_id); |
| } |
| |
| static u16 qedi_get_wqe_idx(struct qedi_conn *qedi_conn) |
| { |
| struct qedi_endpoint *ep; |
| u16 rval; |
| |
| ep = qedi_conn->ep; |
| rval = ep->sq_prod_idx; |
| |
| /* Increament SQ index */ |
| ep->sq_prod_idx++; |
| ep->fw_sq_prod_idx++; |
| if (ep->sq_prod_idx == QEDI_SQ_SIZE) |
| ep->sq_prod_idx = 0; |
| |
| return rval; |
| } |
| |
| int qedi_send_iscsi_login(struct qedi_conn *qedi_conn, |
| struct iscsi_task *task) |
| { |
| struct iscsi_login_req_hdr login_req_pdu_header; |
| struct scsi_sgl_task_params tx_sgl_task_params; |
| struct scsi_sgl_task_params rx_sgl_task_params; |
| struct iscsi_task_params task_params; |
| struct e4_iscsi_task_context *fw_task_ctx; |
| struct qedi_ctx *qedi = qedi_conn->qedi; |
| struct iscsi_login_req *login_hdr; |
| struct scsi_sge *resp_sge = NULL; |
| struct qedi_cmd *qedi_cmd; |
| struct qedi_endpoint *ep; |
| s16 tid = 0; |
| u16 sq_idx = 0; |
| int rval = 0; |
| |
| resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; |
| qedi_cmd = (struct qedi_cmd *)task->dd_data; |
| ep = qedi_conn->ep; |
| login_hdr = (struct iscsi_login_req *)task->hdr; |
| |
| tid = qedi_get_task_idx(qedi); |
| if (tid == -1) |
| return -ENOMEM; |
| |
| fw_task_ctx = |
| (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, |
| tid); |
| memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); |
| |
| qedi_cmd->task_id = tid; |
| |
| memset(&task_params, 0, sizeof(task_params)); |
| memset(&login_req_pdu_header, 0, sizeof(login_req_pdu_header)); |
| memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); |
| memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); |
| /* Update header info */ |
| login_req_pdu_header.opcode = login_hdr->opcode; |
| login_req_pdu_header.version_min = login_hdr->min_version; |
| login_req_pdu_header.version_max = login_hdr->max_version; |
| login_req_pdu_header.flags_attr = login_hdr->flags; |
| login_req_pdu_header.isid_tabc = swab32p((u32 *)login_hdr->isid); |
| login_req_pdu_header.isid_d = swab16p((u16 *)&login_hdr->isid[4]); |
| |
| login_req_pdu_header.tsih = login_hdr->tsih; |
| login_req_pdu_header.hdr_second_dword = ntoh24(login_hdr->dlength); |
| |
| qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); |
| login_req_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); |
| login_req_pdu_header.cid = qedi_conn->iscsi_conn_id; |
| login_req_pdu_header.cmd_sn = be32_to_cpu(login_hdr->cmdsn); |
| login_req_pdu_header.exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); |
| login_req_pdu_header.exp_stat_sn = 0; |
| |
| /* Fill tx AHS and rx buffer */ |
| tx_sgl_task_params.sgl = |
| (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; |
| tx_sgl_task_params.sgl_phys_addr.lo = |
| (u32)(qedi_conn->gen_pdu.req_dma_addr); |
| tx_sgl_task_params.sgl_phys_addr.hi = |
| (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); |
| tx_sgl_task_params.total_buffer_size = ntoh24(login_hdr->dlength); |
| tx_sgl_task_params.num_sges = 1; |
| |
| rx_sgl_task_params.sgl = |
| (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; |
| rx_sgl_task_params.sgl_phys_addr.lo = |
| (u32)(qedi_conn->gen_pdu.resp_dma_addr); |
| rx_sgl_task_params.sgl_phys_addr.hi = |
| (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); |
| rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; |
| rx_sgl_task_params.num_sges = 1; |
| |
| /* Fill fw input params */ |
| task_params.context = fw_task_ctx; |
| task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; |
| task_params.itid = tid; |
| task_params.cq_rss_number = 0; |
| task_params.tx_io_size = ntoh24(login_hdr->dlength); |
| task_params.rx_io_size = resp_sge->sge_len; |
| |
| sq_idx = qedi_get_wqe_idx(qedi_conn); |
| task_params.sqe = &ep->sq[sq_idx]; |
| |
| memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); |
| rval = init_initiator_login_request_task(&task_params, |
| &login_req_pdu_header, |
| &tx_sgl_task_params, |
| &rx_sgl_task_params); |
| if (rval) |
| return -1; |
| |
| spin_lock(&qedi_conn->list_lock); |
| list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); |
| qedi_cmd->io_cmd_in_list = true; |
| qedi_conn->active_cmd_count++; |
| spin_unlock(&qedi_conn->list_lock); |
| |
| qedi_ring_doorbell(qedi_conn); |
| return 0; |
| } |
| |
| int qedi_send_iscsi_logout(struct qedi_conn *qedi_conn, |
| struct iscsi_task *task) |
| { |
| struct iscsi_logout_req_hdr logout_pdu_header; |
| struct scsi_sgl_task_params tx_sgl_task_params; |
| struct scsi_sgl_task_params rx_sgl_task_params; |
| struct iscsi_task_params task_params; |
| struct e4_iscsi_task_context *fw_task_ctx; |
| struct iscsi_logout *logout_hdr = NULL; |
| struct qedi_ctx *qedi = qedi_conn->qedi; |
| struct qedi_cmd *qedi_cmd; |
| struct qedi_endpoint *ep; |
| s16 tid = 0; |
| u16 sq_idx = 0; |
| int rval = 0; |
| |
| qedi_cmd = (struct qedi_cmd *)task->dd_data; |
| logout_hdr = (struct iscsi_logout *)task->hdr; |
| ep = qedi_conn->ep; |
| |
| tid = qedi_get_task_idx(qedi); |
| if (tid == -1) |
| return -ENOMEM; |
| |
| fw_task_ctx = |
| (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, |
| tid); |
| memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); |
| |
| qedi_cmd->task_id = tid; |
| |
| memset(&task_params, 0, sizeof(task_params)); |
| memset(&logout_pdu_header, 0, sizeof(logout_pdu_header)); |
| memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); |
| memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); |
| |
| /* Update header info */ |
| logout_pdu_header.opcode = logout_hdr->opcode; |
| logout_pdu_header.reason_code = 0x80 | logout_hdr->flags; |
| qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); |
| logout_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); |
| logout_pdu_header.exp_stat_sn = be32_to_cpu(logout_hdr->exp_statsn); |
| logout_pdu_header.cmd_sn = be32_to_cpu(logout_hdr->cmdsn); |
| logout_pdu_header.cid = qedi_conn->iscsi_conn_id; |
| |
| /* Fill fw input params */ |
| task_params.context = fw_task_ctx; |
| task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; |
| task_params.itid = tid; |
| task_params.cq_rss_number = 0; |
| task_params.tx_io_size = 0; |
| task_params.rx_io_size = 0; |
| |
| sq_idx = qedi_get_wqe_idx(qedi_conn); |
| task_params.sqe = &ep->sq[sq_idx]; |
| memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); |
| |
| rval = init_initiator_logout_request_task(&task_params, |
| &logout_pdu_header, |
| NULL, NULL); |
| if (rval) |
| return -1; |
| |
| spin_lock(&qedi_conn->list_lock); |
| list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); |
| qedi_cmd->io_cmd_in_list = true; |
| qedi_conn->active_cmd_count++; |
| spin_unlock(&qedi_conn->list_lock); |
| |
| qedi_ring_doorbell(qedi_conn); |
| return 0; |
| } |
| |
| int qedi_cleanup_all_io(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, |
| struct iscsi_task *task, bool in_recovery) |
| { |
| int rval; |
| struct iscsi_task *ctask; |
| struct qedi_cmd *cmd, *cmd_tmp; |
| struct iscsi_tm *tmf_hdr; |
| unsigned int lun = 0; |
| bool lun_reset = false; |
| struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
| struct iscsi_session *session = conn->session; |
| |
| /* From recovery, task is NULL or from tmf resp valid task */ |
| if (task) { |
| tmf_hdr = (struct iscsi_tm *)task->hdr; |
| |
| if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == |
| ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) { |
| lun_reset = true; |
| lun = scsilun_to_int(&tmf_hdr->lun); |
| } |
| } |
| |
| qedi_conn->cmd_cleanup_req = 0; |
| qedi_conn->cmd_cleanup_cmpl = 0; |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
| "active_cmd_count=%d, cid=0x%x, in_recovery=%d, lun_reset=%d\n", |
| qedi_conn->active_cmd_count, qedi_conn->iscsi_conn_id, |
| in_recovery, lun_reset); |
| |
| if (lun_reset) |
| spin_lock_bh(&session->back_lock); |
| |
| spin_lock(&qedi_conn->list_lock); |
| |
| list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list, |
| io_cmd) { |
| ctask = cmd->task; |
| if (ctask == task) |
| continue; |
| |
| if (lun_reset) { |
| if (cmd->scsi_cmd && cmd->scsi_cmd->device) { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
| "tid=0x%x itt=0x%x scsi_cmd_ptr=%p device=%p task_state=%d cmd_state=0%x cid=0x%x\n", |
| cmd->task_id, get_itt(ctask->itt), |
| cmd->scsi_cmd, cmd->scsi_cmd->device, |
| ctask->state, cmd->state, |
| qedi_conn->iscsi_conn_id); |
| if (cmd->scsi_cmd->device->lun != lun) |
| continue; |
| } |
| } |
| qedi_conn->cmd_cleanup_req++; |
| qedi_iscsi_cleanup_task(ctask, true); |
| |
| cmd->io_cmd_in_list = false; |
| list_del_init(&cmd->io_cmd); |
| qedi_conn->active_cmd_count--; |
| QEDI_WARN(&qedi->dbg_ctx, |
| "Deleted active cmd list node io_cmd=%p, cid=0x%x\n", |
| &cmd->io_cmd, qedi_conn->iscsi_conn_id); |
| } |
| |
| spin_unlock(&qedi_conn->list_lock); |
| |
| if (lun_reset) |
| spin_unlock_bh(&session->back_lock); |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
| "cmd_cleanup_req=%d, cid=0x%x\n", |
| qedi_conn->cmd_cleanup_req, |
| qedi_conn->iscsi_conn_id); |
| |
| rval = wait_event_interruptible_timeout(qedi_conn->wait_queue, |
| ((qedi_conn->cmd_cleanup_req == |
| qedi_conn->cmd_cleanup_cmpl) || |
| qedi_conn->ep), |
| 5 * HZ); |
| if (rval) { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
| "i/o cmd_cleanup_req=%d, equal to cmd_cleanup_cmpl=%d, cid=0x%x\n", |
| qedi_conn->cmd_cleanup_req, |
| qedi_conn->cmd_cleanup_cmpl, |
| qedi_conn->iscsi_conn_id); |
| |
| return 0; |
| } |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
| "i/o cmd_cleanup_req=%d, not equal to cmd_cleanup_cmpl=%d, cid=0x%x\n", |
| qedi_conn->cmd_cleanup_req, |
| qedi_conn->cmd_cleanup_cmpl, |
| qedi_conn->iscsi_conn_id); |
| |
| iscsi_host_for_each_session(qedi->shost, |
| qedi_mark_device_missing); |
| qedi_ops->common->drain(qedi->cdev); |
| |
| /* Enable IOs for all other sessions except current.*/ |
| if (!wait_event_interruptible_timeout(qedi_conn->wait_queue, |
| (qedi_conn->cmd_cleanup_req == |
| qedi_conn->cmd_cleanup_cmpl), |
| 5 * HZ)) { |
| iscsi_host_for_each_session(qedi->shost, |
| qedi_mark_device_available); |
| return -1; |
| } |
| |
| iscsi_host_for_each_session(qedi->shost, |
| qedi_mark_device_available); |
| |
| return 0; |
| } |
| |
| void qedi_clearsq(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, |
| struct iscsi_task *task) |
| { |
| struct qedi_endpoint *qedi_ep; |
| int rval; |
| |
| qedi_ep = qedi_conn->ep; |
| qedi_conn->cmd_cleanup_req = 0; |
| qedi_conn->cmd_cleanup_cmpl = 0; |
| |
| if (!qedi_ep) { |
| QEDI_WARN(&qedi->dbg_ctx, |
| "Cannot proceed, ep already disconnected, cid=0x%x\n", |
| qedi_conn->iscsi_conn_id); |
| return; |
| } |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "Clearing SQ for cid=0x%x, conn=%p, ep=%p\n", |
| qedi_conn->iscsi_conn_id, qedi_conn, qedi_ep); |
| |
| qedi_ops->clear_sq(qedi->cdev, qedi_ep->handle); |
| |
| rval = qedi_cleanup_all_io(qedi, qedi_conn, task, true); |
| if (rval) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "fatal error, need hard reset, cid=0x%x\n", |
| qedi_conn->iscsi_conn_id); |
| WARN_ON(1); |
| } |
| } |
| |
| static int qedi_wait_for_cleanup_request(struct qedi_ctx *qedi, |
| struct qedi_conn *qedi_conn, |
| struct iscsi_task *task, |
| struct qedi_cmd *qedi_cmd, |
| struct qedi_work_map *list_work) |
| { |
| struct qedi_cmd *cmd = (struct qedi_cmd *)task->dd_data; |
| int wait; |
| |
| wait = wait_event_interruptible_timeout(qedi_conn->wait_queue, |
| ((qedi_cmd->state == |
| CLEANUP_RECV) || |
| ((qedi_cmd->type == TYPEIO) && |
| (cmd->state == |
| RESPONSE_RECEIVED))), |
| 5 * HZ); |
| if (!wait) { |
| qedi_cmd->state = CLEANUP_WAIT_FAILED; |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
| "Cleanup timedout tid=0x%x, issue connection recovery, cid=0x%x\n", |
| cmd->task_id, qedi_conn->iscsi_conn_id); |
| |
| return -1; |
| } |
| return 0; |
| } |
| |
| static void qedi_tmf_work(struct work_struct *work) |
| { |
| struct qedi_cmd *qedi_cmd = |
| container_of(work, struct qedi_cmd, tmf_work); |
| struct qedi_conn *qedi_conn = qedi_cmd->conn; |
| struct qedi_ctx *qedi = qedi_conn->qedi; |
| struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
| struct iscsi_cls_session *cls_sess; |
| struct qedi_work_map *list_work = NULL; |
| struct iscsi_task *mtask; |
| struct qedi_cmd *cmd; |
| struct iscsi_task *ctask; |
| struct iscsi_tm *tmf_hdr; |
| s16 rval = 0; |
| s16 tid = 0; |
| |
| mtask = qedi_cmd->task; |
| tmf_hdr = (struct iscsi_tm *)mtask->hdr; |
| cls_sess = iscsi_conn_to_session(qedi_conn->cls_conn); |
| set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); |
| |
| ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt); |
| if (!ctask || !ctask->sc) { |
| QEDI_ERR(&qedi->dbg_ctx, "Task already completed\n"); |
| goto abort_ret; |
| } |
| |
| cmd = (struct qedi_cmd *)ctask->dd_data; |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "Abort tmf rtt=0x%x, cmd itt=0x%x, cmd tid=0x%x, cid=0x%x\n", |
| get_itt(tmf_hdr->rtt), get_itt(ctask->itt), cmd->task_id, |
| qedi_conn->iscsi_conn_id); |
| |
| if (qedi_do_not_recover) { |
| QEDI_ERR(&qedi->dbg_ctx, "DONT SEND CLEANUP/ABORT %d\n", |
| qedi_do_not_recover); |
| goto abort_ret; |
| } |
| |
| list_work = kzalloc(sizeof(*list_work), GFP_ATOMIC); |
| if (!list_work) { |
| QEDI_ERR(&qedi->dbg_ctx, "Memory allocation failed\n"); |
| goto abort_ret; |
| } |
| |
| qedi_cmd->type = TYPEIO; |
| list_work->qedi_cmd = qedi_cmd; |
| list_work->rtid = cmd->task_id; |
| list_work->state = QEDI_WORK_SCHEDULED; |
| qedi_cmd->list_tmf_work = list_work; |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
| "Queue tmf work=%p, list node=%p, cid=0x%x, tmf flags=0x%x\n", |
| list_work->ptr_tmf_work, list_work, qedi_conn->iscsi_conn_id, |
| tmf_hdr->flags); |
| |
| spin_lock_bh(&qedi_conn->tmf_work_lock); |
| list_add_tail(&list_work->list, &qedi_conn->tmf_work_list); |
| spin_unlock_bh(&qedi_conn->tmf_work_lock); |
| |
| qedi_iscsi_cleanup_task(ctask, false); |
| |
| rval = qedi_wait_for_cleanup_request(qedi, qedi_conn, ctask, qedi_cmd, |
| list_work); |
| if (rval == -1) { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "FW cleanup got escalated, cid=0x%x\n", |
| qedi_conn->iscsi_conn_id); |
| goto ldel_exit; |
| } |
| |
| tid = qedi_get_task_idx(qedi); |
| if (tid == -1) { |
| QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n", |
| qedi_conn->iscsi_conn_id); |
| goto ldel_exit; |
| } |
| |
| qedi_cmd->task_id = tid; |
| qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task); |
| |
| abort_ret: |
| clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); |
| return; |
| |
| ldel_exit: |
| spin_lock_bh(&qedi_conn->tmf_work_lock); |
| if (qedi_cmd->list_tmf_work) { |
| list_del_init(&list_work->list); |
| qedi_cmd->list_tmf_work = NULL; |
| kfree(list_work); |
| } |
| spin_unlock_bh(&qedi_conn->tmf_work_lock); |
| |
| spin_lock(&qedi_conn->list_lock); |
| if (likely(cmd->io_cmd_in_list)) { |
| cmd->io_cmd_in_list = false; |
| list_del_init(&cmd->io_cmd); |
| qedi_conn->active_cmd_count--; |
| } |
| spin_unlock(&qedi_conn->list_lock); |
| |
| clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); |
| } |
| |
| static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn, |
| struct iscsi_task *mtask) |
| { |
| struct iscsi_tmf_request_hdr tmf_pdu_header; |
| struct iscsi_task_params task_params; |
| struct qedi_ctx *qedi = qedi_conn->qedi; |
| struct e4_iscsi_task_context *fw_task_ctx; |
| struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
| struct iscsi_task *ctask; |
| struct iscsi_tm *tmf_hdr; |
| struct qedi_cmd *qedi_cmd; |
| struct qedi_cmd *cmd; |
| struct qedi_endpoint *ep; |
| u32 scsi_lun[2]; |
| s16 tid = 0; |
| u16 sq_idx = 0; |
| int rval = 0; |
| |
| tmf_hdr = (struct iscsi_tm *)mtask->hdr; |
| qedi_cmd = (struct qedi_cmd *)mtask->dd_data; |
| ep = qedi_conn->ep; |
| if (!ep) |
| return -ENODEV; |
| |
| tid = qedi_get_task_idx(qedi); |
| if (tid == -1) |
| return -ENOMEM; |
| |
| fw_task_ctx = |
| (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, |
| tid); |
| memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); |
| |
| qedi_cmd->task_id = tid; |
| |
| memset(&task_params, 0, sizeof(task_params)); |
| memset(&tmf_pdu_header, 0, sizeof(tmf_pdu_header)); |
| |
| /* Update header info */ |
| qedi_update_itt_map(qedi, tid, mtask->itt, qedi_cmd); |
| tmf_pdu_header.itt = qedi_set_itt(tid, get_itt(mtask->itt)); |
| tmf_pdu_header.cmd_sn = be32_to_cpu(tmf_hdr->cmdsn); |
| |
| memcpy(scsi_lun, &tmf_hdr->lun, sizeof(struct scsi_lun)); |
| tmf_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); |
| tmf_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); |
| |
| if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == |
| ISCSI_TM_FUNC_ABORT_TASK) { |
| ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt); |
| if (!ctask || !ctask->sc) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Could not get reference task\n"); |
| return 0; |
| } |
| cmd = (struct qedi_cmd *)ctask->dd_data; |
| tmf_pdu_header.rtt = |
| qedi_set_itt(cmd->task_id, |
| get_itt(tmf_hdr->rtt)); |
| } else { |
| tmf_pdu_header.rtt = ISCSI_RESERVED_TAG; |
| } |
| |
| tmf_pdu_header.opcode = tmf_hdr->opcode; |
| tmf_pdu_header.function = tmf_hdr->flags; |
| tmf_pdu_header.hdr_second_dword = ntoh24(tmf_hdr->dlength); |
| tmf_pdu_header.ref_cmd_sn = be32_to_cpu(tmf_hdr->refcmdsn); |
| |
| /* Fill fw input params */ |
| task_params.context = fw_task_ctx; |
| task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; |
| task_params.itid = tid; |
| task_params.cq_rss_number = 0; |
| task_params.tx_io_size = 0; |
| task_params.rx_io_size = 0; |
| |
| sq_idx = qedi_get_wqe_idx(qedi_conn); |
| task_params.sqe = &ep->sq[sq_idx]; |
| |
| memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); |
| rval = init_initiator_tmf_request_task(&task_params, |
| &tmf_pdu_header); |
| if (rval) |
| return -1; |
| |
| spin_lock(&qedi_conn->list_lock); |
| list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); |
| qedi_cmd->io_cmd_in_list = true; |
| qedi_conn->active_cmd_count++; |
| spin_unlock(&qedi_conn->list_lock); |
| |
| qedi_ring_doorbell(qedi_conn); |
| return 0; |
| } |
| |
| int qedi_iscsi_abort_work(struct qedi_conn *qedi_conn, |
| struct iscsi_task *mtask) |
| { |
| struct qedi_ctx *qedi = qedi_conn->qedi; |
| struct iscsi_tm *tmf_hdr; |
| struct qedi_cmd *qedi_cmd = (struct qedi_cmd *)mtask->dd_data; |
| s16 tid = 0; |
| |
| tmf_hdr = (struct iscsi_tm *)mtask->hdr; |
| qedi_cmd->task = mtask; |
| |
| /* If abort task then schedule the work and return */ |
| if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == |
| ISCSI_TM_FUNC_ABORT_TASK) { |
| qedi_cmd->state = CLEANUP_WAIT; |
| INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_work); |
| queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work); |
| |
| } else if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == |
| ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) || |
| ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == |
| ISCSI_TM_FUNC_TARGET_WARM_RESET) || |
| ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == |
| ISCSI_TM_FUNC_TARGET_COLD_RESET)) { |
| tid = qedi_get_task_idx(qedi); |
| if (tid == -1) { |
| QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n", |
| qedi_conn->iscsi_conn_id); |
| return -1; |
| } |
| qedi_cmd->task_id = tid; |
| |
| qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task); |
| |
| } else { |
| QEDI_ERR(&qedi->dbg_ctx, "Invalid tmf, cid=0x%x\n", |
| qedi_conn->iscsi_conn_id); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| int qedi_send_iscsi_text(struct qedi_conn *qedi_conn, |
| struct iscsi_task *task) |
| { |
| struct iscsi_text_request_hdr text_request_pdu_header; |
| struct scsi_sgl_task_params tx_sgl_task_params; |
| struct scsi_sgl_task_params rx_sgl_task_params; |
| struct iscsi_task_params task_params; |
| struct e4_iscsi_task_context *fw_task_ctx; |
| struct qedi_ctx *qedi = qedi_conn->qedi; |
| struct iscsi_text *text_hdr; |
| struct scsi_sge *req_sge = NULL; |
| struct scsi_sge *resp_sge = NULL; |
| struct qedi_cmd *qedi_cmd; |
| struct qedi_endpoint *ep; |
| s16 tid = 0; |
| u16 sq_idx = 0; |
| int rval = 0; |
| |
| req_sge = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; |
| resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; |
| qedi_cmd = (struct qedi_cmd *)task->dd_data; |
| text_hdr = (struct iscsi_text *)task->hdr; |
| ep = qedi_conn->ep; |
| |
| tid = qedi_get_task_idx(qedi); |
| if (tid == -1) |
| return -ENOMEM; |
| |
| fw_task_ctx = |
| (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, |
| tid); |
| memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); |
| |
| qedi_cmd->task_id = tid; |
| |
| memset(&task_params, 0, sizeof(task_params)); |
| memset(&text_request_pdu_header, 0, sizeof(text_request_pdu_header)); |
| memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); |
| memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); |
| |
| /* Update header info */ |
| text_request_pdu_header.opcode = text_hdr->opcode; |
| text_request_pdu_header.flags_attr = text_hdr->flags; |
| |
| qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); |
| text_request_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); |
| text_request_pdu_header.ttt = text_hdr->ttt; |
| text_request_pdu_header.cmd_sn = be32_to_cpu(text_hdr->cmdsn); |
| text_request_pdu_header.exp_stat_sn = be32_to_cpu(text_hdr->exp_statsn); |
| text_request_pdu_header.hdr_second_dword = ntoh24(text_hdr->dlength); |
| |
| /* Fill tx AHS and rx buffer */ |
| tx_sgl_task_params.sgl = |
| (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; |
| tx_sgl_task_params.sgl_phys_addr.lo = |
| (u32)(qedi_conn->gen_pdu.req_dma_addr); |
| tx_sgl_task_params.sgl_phys_addr.hi = |
| (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); |
| tx_sgl_task_params.total_buffer_size = req_sge->sge_len; |
| tx_sgl_task_params.num_sges = 1; |
| |
| rx_sgl_task_params.sgl = |
| (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; |
| rx_sgl_task_params.sgl_phys_addr.lo = |
| (u32)(qedi_conn->gen_pdu.resp_dma_addr); |
| rx_sgl_task_params.sgl_phys_addr.hi = |
| (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); |
| rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; |
| rx_sgl_task_params.num_sges = 1; |
| |
| /* Fill fw input params */ |
| task_params.context = fw_task_ctx; |
| task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; |
| task_params.itid = tid; |
| task_params.cq_rss_number = 0; |
| task_params.tx_io_size = ntoh24(text_hdr->dlength); |
| task_params.rx_io_size = resp_sge->sge_len; |
| |
| sq_idx = qedi_get_wqe_idx(qedi_conn); |
| task_params.sqe = &ep->sq[sq_idx]; |
| |
| memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); |
| rval = init_initiator_text_request_task(&task_params, |
| &text_request_pdu_header, |
| &tx_sgl_task_params, |
| &rx_sgl_task_params); |
| if (rval) |
| return -1; |
| |
| spin_lock(&qedi_conn->list_lock); |
| list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); |
| qedi_cmd->io_cmd_in_list = true; |
| qedi_conn->active_cmd_count++; |
| spin_unlock(&qedi_conn->list_lock); |
| |
| qedi_ring_doorbell(qedi_conn); |
| return 0; |
| } |
| |
| int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn, |
| struct iscsi_task *task, |
| char *datap, int data_len, int unsol) |
| { |
| 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_params task_params; |
| struct qedi_ctx *qedi = qedi_conn->qedi; |
| struct e4_iscsi_task_context *fw_task_ctx; |
| struct iscsi_nopout *nopout_hdr; |
| struct scsi_sge *resp_sge = NULL; |
| struct qedi_cmd *qedi_cmd; |
| struct qedi_endpoint *ep; |
| u32 scsi_lun[2]; |
| s16 tid = 0; |
| u16 sq_idx = 0; |
| int rval = 0; |
| |
| resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; |
| qedi_cmd = (struct qedi_cmd *)task->dd_data; |
| nopout_hdr = (struct iscsi_nopout *)task->hdr; |
| ep = qedi_conn->ep; |
| |
| tid = qedi_get_task_idx(qedi); |
| if (tid == -1) |
| return -ENOMEM; |
| |
| fw_task_ctx = |
| (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, |
| tid); |
| memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); |
| |
| qedi_cmd->task_id = tid; |
| |
| memset(&task_params, 0, sizeof(task_params)); |
| memset(&nop_out_pdu_header, 0, sizeof(nop_out_pdu_header)); |
| memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); |
| memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); |
| |
| /* Update header info */ |
| nop_out_pdu_header.opcode = nopout_hdr->opcode; |
| SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_CONST1, 1); |
| SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_RSRV, 0); |
| |
| memcpy(scsi_lun, &nopout_hdr->lun, sizeof(struct scsi_lun)); |
| nop_out_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); |
| nop_out_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); |
| nop_out_pdu_header.cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); |
| nop_out_pdu_header.exp_stat_sn = be32_to_cpu(nopout_hdr->exp_statsn); |
| |
| qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); |
| |
| if (nopout_hdr->ttt != ISCSI_TTT_ALL_ONES) { |
| nop_out_pdu_header.itt = be32_to_cpu(nopout_hdr->itt); |
| nop_out_pdu_header.ttt = be32_to_cpu(nopout_hdr->ttt); |
| } else { |
| nop_out_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); |
| nop_out_pdu_header.ttt = ISCSI_TTT_ALL_ONES; |
| |
| spin_lock(&qedi_conn->list_lock); |
| list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); |
| qedi_cmd->io_cmd_in_list = true; |
| qedi_conn->active_cmd_count++; |
| spin_unlock(&qedi_conn->list_lock); |
| } |
| |
| /* Fill tx AHS and rx buffer */ |
| if (data_len) { |
| tx_sgl_task_params.sgl = |
| (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; |
| tx_sgl_task_params.sgl_phys_addr.lo = |
| (u32)(qedi_conn->gen_pdu.req_dma_addr); |
| tx_sgl_task_params.sgl_phys_addr.hi = |
| (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); |
| tx_sgl_task_params.total_buffer_size = data_len; |
| tx_sgl_task_params.num_sges = 1; |
| |
| rx_sgl_task_params.sgl = |
| (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; |
| rx_sgl_task_params.sgl_phys_addr.lo = |
| (u32)(qedi_conn->gen_pdu.resp_dma_addr); |
| rx_sgl_task_params.sgl_phys_addr.hi = |
| (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); |
| rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; |
| rx_sgl_task_params.num_sges = 1; |
| } |
| |
| /* Fill fw input params */ |
| task_params.context = fw_task_ctx; |
| task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; |
| task_params.itid = tid; |
| task_params.cq_rss_number = 0; |
| task_params.tx_io_size = data_len; |
| task_params.rx_io_size = resp_sge->sge_len; |
| |
| sq_idx = qedi_get_wqe_idx(qedi_conn); |
| task_params.sqe = &ep->sq[sq_idx]; |
| |
| memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); |
| rval = init_initiator_nop_out_task(&task_params, |
| &nop_out_pdu_header, |
| &tx_sgl_task_params, |
| &rx_sgl_task_params); |
| if (rval) |
| return -1; |
| |
| qedi_ring_doorbell(qedi_conn); |
| return 0; |
| } |
| |
| static int qedi_split_bd(struct qedi_cmd *cmd, u64 addr, int sg_len, |
| int bd_index) |
| { |
| struct scsi_sge *bd = cmd->io_tbl.sge_tbl; |
| int frag_size, sg_frags; |
| |
| sg_frags = 0; |
| |
| while (sg_len) { |
| if (addr % QEDI_PAGE_SIZE) |
| frag_size = |
| (QEDI_PAGE_SIZE - (addr % QEDI_PAGE_SIZE)); |
| else |
| frag_size = (sg_len > QEDI_BD_SPLIT_SZ) ? 0 : |
| (sg_len % QEDI_BD_SPLIT_SZ); |
| |
| if (frag_size == 0) |
| frag_size = QEDI_BD_SPLIT_SZ; |
| |
| bd[bd_index + sg_frags].sge_addr.lo = (addr & 0xffffffff); |
| bd[bd_index + sg_frags].sge_addr.hi = (addr >> 32); |
| bd[bd_index + sg_frags].sge_len = (u16)frag_size; |
| QEDI_INFO(&cmd->conn->qedi->dbg_ctx, QEDI_LOG_IO, |
| "split sge %d: addr=%llx, len=%x", |
| (bd_index + sg_frags), addr, frag_size); |
| |
| addr += (u64)frag_size; |
| sg_frags++; |
| sg_len -= frag_size; |
| } |
| return sg_frags; |
| } |
| |
| static int qedi_map_scsi_sg(struct qedi_ctx *qedi, struct qedi_cmd *cmd) |
| { |
| struct scsi_cmnd *sc = cmd->scsi_cmd; |
| struct scsi_sge *bd = cmd->io_tbl.sge_tbl; |
| struct scatterlist *sg; |
| int byte_count = 0; |
| int bd_count = 0; |
| int sg_count; |
| int sg_len; |
| int sg_frags; |
| u64 addr, end_addr; |
| int i; |
| |
| WARN_ON(scsi_sg_count(sc) > QEDI_ISCSI_MAX_BDS_PER_CMD); |
| |
| sg_count = dma_map_sg(&qedi->pdev->dev, scsi_sglist(sc), |
| scsi_sg_count(sc), sc->sc_data_direction); |
| |
| /* |
| * New condition to send single SGE as cached-SGL. |
| * Single SGE with length less than 64K. |
| */ |
| sg = scsi_sglist(sc); |
| if ((sg_count == 1) && (sg_dma_len(sg) <= MAX_SGLEN_FOR_CACHESGL)) { |
| sg_len = sg_dma_len(sg); |
| addr = (u64)sg_dma_address(sg); |
| |
| bd[bd_count].sge_addr.lo = (addr & 0xffffffff); |
| bd[bd_count].sge_addr.hi = (addr >> 32); |
| bd[bd_count].sge_len = (u16)sg_len; |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, |
| "single-cached-sgl: bd_count:%d addr=%llx, len=%x", |
| sg_count, addr, sg_len); |
| |
| return ++bd_count; |
| } |
| |
| scsi_for_each_sg(sc, sg, sg_count, i) { |
| sg_len = sg_dma_len(sg); |
| addr = (u64)sg_dma_address(sg); |
| end_addr = (addr + sg_len); |
| |
| /* |
| * first sg elem in the 'list', |
| * check if end addr is page-aligned. |
| */ |
| if ((i == 0) && (sg_count > 1) && (end_addr % QEDI_PAGE_SIZE)) |
| cmd->use_slowpath = true; |
| |
| /* |
| * last sg elem in the 'list', |
| * check if start addr is page-aligned. |
| */ |
| else if ((i == (sg_count - 1)) && |
| (sg_count > 1) && (addr % QEDI_PAGE_SIZE)) |
| cmd->use_slowpath = true; |
| |
| /* |
| * middle sg elements in list, |
| * check if start and end addr is page-aligned |
| */ |
| else if ((i != 0) && (i != (sg_count - 1)) && |
| ((addr % QEDI_PAGE_SIZE) || |
| (end_addr % QEDI_PAGE_SIZE))) |
| cmd->use_slowpath = true; |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "sg[%d] size=0x%x", |
| i, sg_len); |
| |
| if (sg_len > QEDI_BD_SPLIT_SZ) { |
| sg_frags = qedi_split_bd(cmd, addr, sg_len, bd_count); |
| } else { |
| sg_frags = 1; |
| bd[bd_count].sge_addr.lo = addr & 0xffffffff; |
| bd[bd_count].sge_addr.hi = addr >> 32; |
| bd[bd_count].sge_len = sg_len; |
| } |
| byte_count += sg_len; |
| bd_count += sg_frags; |
| } |
| |
| if (byte_count != scsi_bufflen(sc)) |
| QEDI_ERR(&qedi->dbg_ctx, |
| "byte_count = %d != scsi_bufflen = %d\n", byte_count, |
| scsi_bufflen(sc)); |
| else |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "byte_count = %d\n", |
| byte_count); |
| |
| WARN_ON(byte_count != scsi_bufflen(sc)); |
| |
| return bd_count; |
| } |
| |
| static void qedi_iscsi_map_sg_list(struct qedi_cmd *cmd) |
| { |
| int bd_count; |
| struct scsi_cmnd *sc = cmd->scsi_cmd; |
| |
| if (scsi_sg_count(sc)) { |
| bd_count = qedi_map_scsi_sg(cmd->conn->qedi, cmd); |
| if (bd_count == 0) |
| return; |
| } else { |
| struct scsi_sge *bd = cmd->io_tbl.sge_tbl; |
| |
| bd[0].sge_addr.lo = 0; |
| bd[0].sge_addr.hi = 0; |
| bd[0].sge_len = 0; |
| bd_count = 0; |
| } |
| cmd->io_tbl.sge_valid = bd_count; |
| } |
| |
| static void qedi_cpy_scsi_cdb(struct scsi_cmnd *sc, u32 *dstp) |
| { |
| u32 dword; |
| int lpcnt; |
| u8 *srcp; |
| |
| lpcnt = sc->cmd_len / sizeof(dword); |
| srcp = (u8 *)sc->cmnd; |
| while (lpcnt--) { |
| memcpy(&dword, (const void *)srcp, 4); |
| *dstp = cpu_to_be32(dword); |
| srcp += 4; |
| dstp++; |
| } |
| if (sc->cmd_len & 0x3) { |
| dword = (u32)srcp[0] | ((u32)srcp[1] << 8); |
| *dstp = cpu_to_be32(dword); |
| } |
| } |
| |
| void qedi_trace_io(struct qedi_ctx *qedi, struct iscsi_task *task, |
| u16 tid, int8_t direction) |
| { |
| struct qedi_io_log *io_log; |
| struct iscsi_conn *conn = task->conn; |
| struct qedi_conn *qedi_conn = conn->dd_data; |
| struct scsi_cmnd *sc_cmd = task->sc; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&qedi->io_trace_lock, flags); |
| |
| io_log = &qedi->io_trace_buf[qedi->io_trace_idx]; |
| io_log->direction = direction; |
| io_log->task_id = tid; |
| io_log->cid = qedi_conn->iscsi_conn_id; |
| io_log->lun = sc_cmd->device->lun; |
| io_log->op = sc_cmd->cmnd[0]; |
| io_log->lba[0] = sc_cmd->cmnd[2]; |
| io_log->lba[1] = sc_cmd->cmnd[3]; |
| io_log->lba[2] = sc_cmd->cmnd[4]; |
| io_log->lba[3] = sc_cmd->cmnd[5]; |
| io_log->bufflen = scsi_bufflen(sc_cmd); |
| io_log->sg_count = scsi_sg_count(sc_cmd); |
| io_log->fast_sgs = qedi->fast_sgls; |
| io_log->cached_sgs = qedi->cached_sgls; |
| io_log->slow_sgs = qedi->slow_sgls; |
| io_log->cached_sge = qedi->use_cached_sge; |
| io_log->slow_sge = qedi->use_slow_sge; |
| io_log->fast_sge = qedi->use_fast_sge; |
| io_log->result = sc_cmd->result; |
| io_log->jiffies = jiffies; |
| io_log->blk_req_cpu = smp_processor_id(); |
| |
| if (direction == QEDI_IO_TRACE_REQ) { |
| /* For requests we only care about the submission CPU */ |
| io_log->req_cpu = smp_processor_id() % qedi->num_queues; |
| io_log->intr_cpu = 0; |
| io_log->blk_rsp_cpu = 0; |
| } else if (direction == QEDI_IO_TRACE_RSP) { |
| io_log->req_cpu = smp_processor_id() % qedi->num_queues; |
| io_log->intr_cpu = qedi->intr_cpu; |
| io_log->blk_rsp_cpu = smp_processor_id(); |
| } |
| |
| qedi->io_trace_idx++; |
| if (qedi->io_trace_idx == QEDI_IO_TRACE_SIZE) |
| qedi->io_trace_idx = 0; |
| |
| qedi->use_cached_sge = false; |
| qedi->use_slow_sge = false; |
| qedi->use_fast_sge = false; |
| |
| spin_unlock_irqrestore(&qedi->io_trace_lock, flags); |
| } |
| |
| int qedi_iscsi_send_ioreq(struct iscsi_task *task) |
| { |
| struct iscsi_conn *conn = task->conn; |
| struct iscsi_session *session = conn->session; |
| struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session); |
| struct qedi_ctx *qedi = iscsi_host_priv(shost); |
| struct qedi_conn *qedi_conn = conn->dd_data; |
| struct qedi_cmd *cmd = task->dd_data; |
| struct scsi_cmnd *sc = task->sc; |
| struct iscsi_cmd_hdr cmd_pdu_header; |
| struct scsi_sgl_task_params tx_sgl_task_params; |
| struct scsi_sgl_task_params rx_sgl_task_params; |
| struct scsi_sgl_task_params *prx_sgl = NULL; |
| struct scsi_sgl_task_params *ptx_sgl = NULL; |
| struct iscsi_task_params task_params; |
| struct iscsi_conn_params conn_params; |
| struct scsi_initiator_cmd_params cmd_params; |
| struct e4_iscsi_task_context *fw_task_ctx; |
| struct iscsi_cls_conn *cls_conn; |
| struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr; |
| enum iscsi_task_type task_type = MAX_ISCSI_TASK_TYPE; |
| struct qedi_endpoint *ep; |
| u32 scsi_lun[2]; |
| s16 tid = 0; |
| u16 sq_idx = 0; |
| u16 cq_idx; |
| int rval = 0; |
| |
| ep = qedi_conn->ep; |
| cls_conn = qedi_conn->cls_conn; |
| conn = cls_conn->dd_data; |
| |
| qedi_iscsi_map_sg_list(cmd); |
| int_to_scsilun(sc->device->lun, (struct scsi_lun *)scsi_lun); |
| |
| tid = qedi_get_task_idx(qedi); |
| if (tid == -1) |
| return -ENOMEM; |
| |
| fw_task_ctx = |
| (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, |
| tid); |
| memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); |
| |
| cmd->task_id = tid; |
| |
| memset(&task_params, 0, sizeof(task_params)); |
| memset(&cmd_pdu_header, 0, sizeof(cmd_pdu_header)); |
| memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); |
| memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); |
| memset(&conn_params, 0, sizeof(conn_params)); |
| memset(&cmd_params, 0, sizeof(cmd_params)); |
| |
| cq_idx = smp_processor_id() % qedi->num_queues; |
| /* Update header info */ |
| SET_FIELD(cmd_pdu_header.flags_attr, ISCSI_CMD_HDR_ATTR, |
| ISCSI_ATTR_SIMPLE); |
| if (hdr->cdb[0] != TEST_UNIT_READY) { |
| if (sc->sc_data_direction == DMA_TO_DEVICE) { |
| SET_FIELD(cmd_pdu_header.flags_attr, |
| ISCSI_CMD_HDR_WRITE, 1); |
| task_type = ISCSI_TASK_TYPE_INITIATOR_WRITE; |
| } else { |
| SET_FIELD(cmd_pdu_header.flags_attr, |
| ISCSI_CMD_HDR_READ, 1); |
| task_type = ISCSI_TASK_TYPE_INITIATOR_READ; |
| } |
| } |
| |
| cmd_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); |
| cmd_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); |
| |
| qedi_update_itt_map(qedi, tid, task->itt, cmd); |
| cmd_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); |
| cmd_pdu_header.expected_transfer_length = cpu_to_be32(hdr->data_length); |
| cmd_pdu_header.hdr_second_dword = ntoh24(hdr->dlength); |
| cmd_pdu_header.cmd_sn = be32_to_cpu(hdr->cmdsn); |
| cmd_pdu_header.hdr_first_byte = hdr->opcode; |
| qedi_cpy_scsi_cdb(sc, (u32 *)cmd_pdu_header.cdb); |
| |
| /* Fill tx AHS and rx buffer */ |
| if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) { |
| tx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl; |
| tx_sgl_task_params.sgl_phys_addr.lo = |
| (u32)(cmd->io_tbl.sge_tbl_dma); |
| tx_sgl_task_params.sgl_phys_addr.hi = |
| (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); |
| tx_sgl_task_params.total_buffer_size = scsi_bufflen(sc); |
| tx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid; |
| if (cmd->use_slowpath) |
| tx_sgl_task_params.small_mid_sge = true; |
| } else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) { |
| rx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl; |
| rx_sgl_task_params.sgl_phys_addr.lo = |
| (u32)(cmd->io_tbl.sge_tbl_dma); |
| rx_sgl_task_params.sgl_phys_addr.hi = |
| (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); |
| rx_sgl_task_params.total_buffer_size = scsi_bufflen(sc); |
| rx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid; |
| } |
| |
| /* Add conn param */ |
| conn_params.first_burst_length = conn->session->first_burst; |
| conn_params.max_send_pdu_length = conn->max_xmit_dlength; |
| conn_params.max_burst_length = conn->session->max_burst; |
| if (conn->session->initial_r2t_en) |
| conn_params.initial_r2t = true; |
| if (conn->session->imm_data_en) |
| conn_params.immediate_data = true; |
| |
| /* Add cmd params */ |
| cmd_params.sense_data_buffer_phys_addr.lo = (u32)cmd->sense_buffer_dma; |
| cmd_params.sense_data_buffer_phys_addr.hi = |
| (u32)((u64)cmd->sense_buffer_dma >> 32); |
| /* Fill fw input params */ |
| task_params.context = fw_task_ctx; |
| task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; |
| task_params.itid = tid; |
| task_params.cq_rss_number = cq_idx; |
| if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) |
| task_params.tx_io_size = scsi_bufflen(sc); |
| else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) |
| task_params.rx_io_size = scsi_bufflen(sc); |
| |
| sq_idx = qedi_get_wqe_idx(qedi_conn); |
| task_params.sqe = &ep->sq[sq_idx]; |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, |
| "%s: %s-SGL: sg_len=0x%x num_sges=0x%x first-sge-lo=0x%x first-sge-hi=0x%x\n", |
| (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) ? |
| "Write " : "Read ", (cmd->io_tbl.sge_valid == 1) ? |
| "Single" : (cmd->use_slowpath ? "SLOW" : "FAST"), |
| (u16)cmd->io_tbl.sge_valid, scsi_bufflen(sc), |
| (u32)(cmd->io_tbl.sge_tbl_dma), |
| (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32)); |
| |
| memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); |
| |
| if (task_params.tx_io_size != 0) |
| ptx_sgl = &tx_sgl_task_params; |
| if (task_params.rx_io_size != 0) |
| prx_sgl = &rx_sgl_task_params; |
| |
| rval = init_initiator_rw_iscsi_task(&task_params, &conn_params, |
| &cmd_params, &cmd_pdu_header, |
| ptx_sgl, prx_sgl, |
| NULL); |
| if (rval) |
| return -1; |
| |
| spin_lock(&qedi_conn->list_lock); |
| list_add_tail(&cmd->io_cmd, &qedi_conn->active_cmd_list); |
| cmd->io_cmd_in_list = true; |
| qedi_conn->active_cmd_count++; |
| spin_unlock(&qedi_conn->list_lock); |
| |
| qedi_ring_doorbell(qedi_conn); |
| return 0; |
| } |
| |
| int qedi_iscsi_cleanup_task(struct iscsi_task *task, bool mark_cmd_node_deleted) |
| { |
| struct iscsi_task_params task_params; |
| struct qedi_endpoint *ep; |
| struct iscsi_conn *conn = task->conn; |
| struct qedi_conn *qedi_conn = conn->dd_data; |
| struct qedi_cmd *cmd = task->dd_data; |
| u16 sq_idx = 0; |
| int rval = 0; |
| |
| QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
| "issue cleanup tid=0x%x itt=0x%x task_state=%d cmd_state=0%x cid=0x%x\n", |
| cmd->task_id, get_itt(task->itt), task->state, |
| cmd->state, qedi_conn->iscsi_conn_id); |
| |
| memset(&task_params, 0, sizeof(task_params)); |
| ep = qedi_conn->ep; |
| |
| sq_idx = qedi_get_wqe_idx(qedi_conn); |
| |
| task_params.sqe = &ep->sq[sq_idx]; |
| memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); |
| task_params.itid = cmd->task_id; |
| |
| rval = init_cleanup_task(&task_params); |
| if (rval) |
| return rval; |
| |
| qedi_ring_doorbell(qedi_conn); |
| return 0; |
| } |