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![Mike Christie](/assets/img/avatar_default.png)
This fixes a deadlock added with commitb40f3894e3
("scsi: qedi: Complete TMF works before disconnect") Bug description from Jia-Ju Bai: qedi_process_tmf_resp() spin_lock(&session->back_lock); --> Line 201 (Lock A) spin_lock(&qedi_conn->tmf_work_lock); --> Line 230 (Lock B) qedi_process_cmd_cleanup_resp() spin_lock_bh(&qedi_conn->tmf_work_lock); --> Line 752 (Lock B) spin_lock_bh(&conn->session->back_lock); --> Line 784 (Lock A) When qedi_process_tmf_resp() and qedi_process_cmd_cleanup_resp() are concurrently executed, the deadlock can occur. This patch fixes the deadlock by not holding the tmf_work_lock in qedi_process_cmd_cleanup_resp while holding the back_lock. The tmf_work_lock is only needed while we remove the tmf_work from the work_list. Link: https://lore.kernel.org/r/20220208185448.6206-1-michael.christie@oracle.com Fixes:b40f3894e3
("scsi: qedi: Complete TMF works before disconnect") Cc: Manish Rangankar <mrangankar@marvell.com> Cc: Nilesh Javali <njavali@marvell.com> Reported-by: TOTE Robot <oslab@tsinghua.edu.cn> Reported-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2158 lines
65 KiB
C
2158 lines
65 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* QLogic iSCSI Offload Driver
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* Copyright (c) 2016 Cavium Inc.
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*/
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#include <linux/blkdev.h>
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#include <scsi/scsi_tcq.h>
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#include <linux/delay.h>
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#include "qedi.h"
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#include "qedi_iscsi.h"
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#include "qedi_gbl.h"
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#include "qedi_fw_iscsi.h"
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#include "qedi_fw_scsi.h"
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static int send_iscsi_tmf(struct qedi_conn *qedi_conn,
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struct iscsi_task *mtask, struct iscsi_task *ctask);
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void qedi_iscsi_unmap_sg_list(struct qedi_cmd *cmd)
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{
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struct scsi_cmnd *sc = cmd->scsi_cmd;
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if (cmd->io_tbl.sge_valid && sc) {
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cmd->io_tbl.sge_valid = 0;
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scsi_dma_unmap(sc);
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}
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}
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static void qedi_process_logout_resp(struct qedi_ctx *qedi,
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union iscsi_cqe *cqe,
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struct iscsi_task *task,
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struct qedi_conn *qedi_conn)
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{
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struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
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struct iscsi_logout_rsp *resp_hdr;
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struct iscsi_session *session = conn->session;
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struct iscsi_logout_response_hdr *cqe_logout_response;
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struct qedi_cmd *cmd;
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cmd = (struct qedi_cmd *)task->dd_data;
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cqe_logout_response = &cqe->cqe_common.iscsi_hdr.logout_response;
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spin_lock(&session->back_lock);
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resp_hdr = (struct iscsi_logout_rsp *)&qedi_conn->gen_pdu.resp_hdr;
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memset(resp_hdr, 0, sizeof(struct iscsi_hdr));
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resp_hdr->opcode = cqe_logout_response->opcode;
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resp_hdr->flags = cqe_logout_response->flags;
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resp_hdr->hlength = 0;
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resp_hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age);
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resp_hdr->statsn = cpu_to_be32(cqe_logout_response->stat_sn);
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resp_hdr->exp_cmdsn = cpu_to_be32(cqe_logout_response->exp_cmd_sn);
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resp_hdr->max_cmdsn = cpu_to_be32(cqe_logout_response->max_cmd_sn);
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resp_hdr->t2wait = cpu_to_be32(cqe_logout_response->time_2_wait);
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resp_hdr->t2retain = cpu_to_be32(cqe_logout_response->time_2_retain);
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QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
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"Freeing tid=0x%x for cid=0x%x\n",
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cmd->task_id, qedi_conn->iscsi_conn_id);
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spin_lock(&qedi_conn->list_lock);
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if (likely(cmd->io_cmd_in_list)) {
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cmd->io_cmd_in_list = false;
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list_del_init(&cmd->io_cmd);
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qedi_conn->active_cmd_count--;
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} else {
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QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
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"Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n",
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cmd->task_id, qedi_conn->iscsi_conn_id,
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&cmd->io_cmd);
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}
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spin_unlock(&qedi_conn->list_lock);
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cmd->state = RESPONSE_RECEIVED;
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__iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0);
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spin_unlock(&session->back_lock);
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}
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static void qedi_process_text_resp(struct qedi_ctx *qedi,
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union iscsi_cqe *cqe,
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struct iscsi_task *task,
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struct qedi_conn *qedi_conn)
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{
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struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
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struct iscsi_session *session = conn->session;
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struct iscsi_task_context *task_ctx;
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struct iscsi_text_rsp *resp_hdr_ptr;
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struct iscsi_text_response_hdr *cqe_text_response;
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struct qedi_cmd *cmd;
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int pld_len;
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cmd = (struct qedi_cmd *)task->dd_data;
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task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id);
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cqe_text_response = &cqe->cqe_common.iscsi_hdr.text_response;
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spin_lock(&session->back_lock);
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resp_hdr_ptr = (struct iscsi_text_rsp *)&qedi_conn->gen_pdu.resp_hdr;
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memset(resp_hdr_ptr, 0, sizeof(struct iscsi_hdr));
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resp_hdr_ptr->opcode = cqe_text_response->opcode;
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resp_hdr_ptr->flags = cqe_text_response->flags;
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resp_hdr_ptr->hlength = 0;
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hton24(resp_hdr_ptr->dlength,
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(cqe_text_response->hdr_second_dword &
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ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK));
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resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,
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conn->session->age);
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resp_hdr_ptr->ttt = cqe_text_response->ttt;
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resp_hdr_ptr->statsn = cpu_to_be32(cqe_text_response->stat_sn);
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resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_text_response->exp_cmd_sn);
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resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_text_response->max_cmd_sn);
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pld_len = cqe_text_response->hdr_second_dword &
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ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK;
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qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len;
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memset(task_ctx, '\0', sizeof(*task_ctx));
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QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
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"Freeing tid=0x%x for cid=0x%x\n",
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cmd->task_id, qedi_conn->iscsi_conn_id);
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spin_lock(&qedi_conn->list_lock);
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if (likely(cmd->io_cmd_in_list)) {
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cmd->io_cmd_in_list = false;
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list_del_init(&cmd->io_cmd);
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qedi_conn->active_cmd_count--;
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} else {
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QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
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"Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n",
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cmd->task_id, qedi_conn->iscsi_conn_id,
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&cmd->io_cmd);
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}
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spin_unlock(&qedi_conn->list_lock);
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cmd->state = RESPONSE_RECEIVED;
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__iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr,
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qedi_conn->gen_pdu.resp_buf,
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(qedi_conn->gen_pdu.resp_wr_ptr -
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qedi_conn->gen_pdu.resp_buf));
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spin_unlock(&session->back_lock);
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}
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static void qedi_tmf_resp_work(struct work_struct *work)
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{
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struct qedi_cmd *qedi_cmd =
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container_of(work, struct qedi_cmd, tmf_work);
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struct qedi_conn *qedi_conn = qedi_cmd->conn;
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struct qedi_ctx *qedi = qedi_conn->qedi;
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struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
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struct iscsi_session *session = conn->session;
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struct iscsi_tm_rsp *resp_hdr_ptr;
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int rval = 0;
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resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf;
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rval = qedi_cleanup_all_io(qedi, qedi_conn, qedi_cmd->task, true);
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if (rval)
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goto exit_tmf_resp;
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spin_lock(&session->back_lock);
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__iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0);
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spin_unlock(&session->back_lock);
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exit_tmf_resp:
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kfree(resp_hdr_ptr);
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spin_lock(&qedi_conn->tmf_work_lock);
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qedi_conn->fw_cleanup_works--;
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spin_unlock(&qedi_conn->tmf_work_lock);
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}
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static void qedi_process_tmf_resp(struct qedi_ctx *qedi,
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union iscsi_cqe *cqe,
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struct iscsi_task *task,
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struct qedi_conn *qedi_conn)
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{
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struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
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struct iscsi_session *session = conn->session;
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struct iscsi_tmf_response_hdr *cqe_tmp_response;
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struct iscsi_tm_rsp *resp_hdr_ptr;
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struct iscsi_tm *tmf_hdr;
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struct qedi_cmd *qedi_cmd = NULL;
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cqe_tmp_response = &cqe->cqe_common.iscsi_hdr.tmf_response;
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qedi_cmd = task->dd_data;
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qedi_cmd->tmf_resp_buf = kzalloc(sizeof(*resp_hdr_ptr), GFP_ATOMIC);
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if (!qedi_cmd->tmf_resp_buf) {
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QEDI_ERR(&qedi->dbg_ctx,
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"Failed to allocate resp buf, cid=0x%x\n",
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qedi_conn->iscsi_conn_id);
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return;
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}
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spin_lock(&session->back_lock);
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resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf;
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memset(resp_hdr_ptr, 0, sizeof(struct iscsi_tm_rsp));
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/* Fill up the header */
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resp_hdr_ptr->opcode = cqe_tmp_response->opcode;
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resp_hdr_ptr->flags = cqe_tmp_response->hdr_flags;
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resp_hdr_ptr->response = cqe_tmp_response->hdr_response;
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resp_hdr_ptr->hlength = 0;
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hton24(resp_hdr_ptr->dlength,
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(cqe_tmp_response->hdr_second_dword &
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ISCSI_TMF_RESPONSE_HDR_DATA_SEG_LEN_MASK));
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resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,
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conn->session->age);
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resp_hdr_ptr->statsn = cpu_to_be32(cqe_tmp_response->stat_sn);
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resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_tmp_response->exp_cmd_sn);
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resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_tmp_response->max_cmd_sn);
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tmf_hdr = (struct iscsi_tm *)qedi_cmd->task->hdr;
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spin_lock(&qedi_conn->list_lock);
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if (likely(qedi_cmd->io_cmd_in_list)) {
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qedi_cmd->io_cmd_in_list = false;
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list_del_init(&qedi_cmd->io_cmd);
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qedi_conn->active_cmd_count--;
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}
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spin_unlock(&qedi_conn->list_lock);
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spin_lock(&qedi_conn->tmf_work_lock);
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switch (tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) {
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case ISCSI_TM_FUNC_LOGICAL_UNIT_RESET:
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case ISCSI_TM_FUNC_TARGET_WARM_RESET:
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case ISCSI_TM_FUNC_TARGET_COLD_RESET:
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if (qedi_conn->ep_disconnect_starting) {
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/* Session is down so ep_disconnect will clean up */
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spin_unlock(&qedi_conn->tmf_work_lock);
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goto unblock_sess;
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}
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qedi_conn->fw_cleanup_works++;
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spin_unlock(&qedi_conn->tmf_work_lock);
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INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_resp_work);
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queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work);
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goto unblock_sess;
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}
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spin_unlock(&qedi_conn->tmf_work_lock);
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__iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0);
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kfree(resp_hdr_ptr);
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unblock_sess:
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spin_unlock(&session->back_lock);
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}
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static void qedi_process_login_resp(struct qedi_ctx *qedi,
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union iscsi_cqe *cqe,
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struct iscsi_task *task,
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struct qedi_conn *qedi_conn)
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{
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struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
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struct iscsi_session *session = conn->session;
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struct iscsi_task_context *task_ctx;
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struct iscsi_login_rsp *resp_hdr_ptr;
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struct iscsi_login_response_hdr *cqe_login_response;
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struct qedi_cmd *cmd;
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int pld_len;
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cmd = (struct qedi_cmd *)task->dd_data;
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cqe_login_response = &cqe->cqe_common.iscsi_hdr.login_response;
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task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id);
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spin_lock(&session->back_lock);
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resp_hdr_ptr = (struct iscsi_login_rsp *)&qedi_conn->gen_pdu.resp_hdr;
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memset(resp_hdr_ptr, 0, sizeof(struct iscsi_login_rsp));
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resp_hdr_ptr->opcode = cqe_login_response->opcode;
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resp_hdr_ptr->flags = cqe_login_response->flags_attr;
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resp_hdr_ptr->hlength = 0;
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hton24(resp_hdr_ptr->dlength,
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(cqe_login_response->hdr_second_dword &
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ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK));
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resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,
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conn->session->age);
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resp_hdr_ptr->tsih = cqe_login_response->tsih;
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resp_hdr_ptr->statsn = cpu_to_be32(cqe_login_response->stat_sn);
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resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_login_response->exp_cmd_sn);
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resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_login_response->max_cmd_sn);
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resp_hdr_ptr->status_class = cqe_login_response->status_class;
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resp_hdr_ptr->status_detail = cqe_login_response->status_detail;
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pld_len = cqe_login_response->hdr_second_dword &
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ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK;
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qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len;
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spin_lock(&qedi_conn->list_lock);
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if (likely(cmd->io_cmd_in_list)) {
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cmd->io_cmd_in_list = false;
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list_del_init(&cmd->io_cmd);
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qedi_conn->active_cmd_count--;
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}
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spin_unlock(&qedi_conn->list_lock);
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memset(task_ctx, '\0', sizeof(*task_ctx));
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__iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr,
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qedi_conn->gen_pdu.resp_buf,
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(qedi_conn->gen_pdu.resp_wr_ptr -
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qedi_conn->gen_pdu.resp_buf));
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spin_unlock(&session->back_lock);
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QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
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"Freeing tid=0x%x for cid=0x%x\n",
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cmd->task_id, qedi_conn->iscsi_conn_id);
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cmd->state = RESPONSE_RECEIVED;
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}
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static void qedi_get_rq_bdq_buf(struct qedi_ctx *qedi,
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struct iscsi_cqe_unsolicited *cqe,
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char *ptr, int len)
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{
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u16 idx = 0;
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QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
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"pld_len [%d], bdq_prod_idx [%d], idx [%d]\n",
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len, qedi->bdq_prod_idx,
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(qedi->bdq_prod_idx % qedi->rq_num_entries));
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/* Obtain buffer address from rqe_opaque */
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idx = cqe->rqe_opaque;
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if (idx > (QEDI_BDQ_NUM - 1)) {
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QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
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"wrong idx %d returned by FW, dropping the unsolicited pkt\n",
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idx);
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return;
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}
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QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
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"rqe_opaque [0x%p], idx [%d]\n", cqe->rqe_opaque, idx);
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QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
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"unsol_cqe_type = %d\n", cqe->unsol_cqe_type);
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switch (cqe->unsol_cqe_type) {
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case ISCSI_CQE_UNSOLICITED_SINGLE:
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case ISCSI_CQE_UNSOLICITED_FIRST:
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if (len)
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memcpy(ptr, (void *)qedi->bdq[idx].buf_addr, len);
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break;
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case ISCSI_CQE_UNSOLICITED_MIDDLE:
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case ISCSI_CQE_UNSOLICITED_LAST:
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break;
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default:
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break;
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}
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}
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static void qedi_put_rq_bdq_buf(struct qedi_ctx *qedi,
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struct iscsi_cqe_unsolicited *cqe,
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int count)
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{
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u16 idx = 0;
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struct scsi_bd *pbl;
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/* Obtain buffer address from rqe_opaque */
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idx = cqe->rqe_opaque;
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if (idx > (QEDI_BDQ_NUM - 1)) {
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QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
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"wrong idx %d returned by FW, dropping the unsolicited pkt\n",
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idx);
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return;
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}
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pbl = (struct scsi_bd *)qedi->bdq_pbl;
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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);
|
|
readw(qedi->bdq_primary_prod);
|
|
|
|
writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
|
|
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);
|
|
}
|
|
|
|
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 (!scsi_cmd_to_rq(sc_cmd)->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);
|
|
|
|
__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;
|
|
|
|
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_conn *conn)
|
|
{
|
|
struct qedi_work_map *work, *work_tmp;
|
|
u32 proto_itt = cqe->itid;
|
|
int found = 0;
|
|
struct qedi_cmd *qedi_cmd = NULL;
|
|
u32 iscsi_cid;
|
|
struct qedi_conn *qedi_conn;
|
|
struct qedi_cmd *dbg_cmd;
|
|
struct iscsi_task *mtask, *task;
|
|
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;
|
|
task = work->ctask;
|
|
tmf_hdr = (struct iscsi_tm *)mtask->hdr;
|
|
|
|
list_del_init(&work->list);
|
|
kfree(work);
|
|
qedi_cmd->list_tmf_work = NULL;
|
|
}
|
|
}
|
|
spin_unlock_bh(&qedi_conn->tmf_work_lock);
|
|
|
|
if (!found)
|
|
goto check_cleanup_reqs;
|
|
|
|
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);
|
|
|
|
spin_lock_bh(&conn->session->back_lock);
|
|
if (iscsi_task_is_completed(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);
|
|
goto unlock;
|
|
}
|
|
|
|
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);
|
|
|
|
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;
|
|
unlock:
|
|
spin_unlock_bh(&conn->session->back_lock);
|
|
wake_up_interruptible(&qedi_conn->wait_queue);
|
|
return;
|
|
|
|
check_cleanup_reqs:
|
|
if (atomic_inc_return(&qedi_conn->cmd_cleanup_cmpl) ==
|
|
qedi_conn->cmd_cleanup_req) {
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
|
|
"Freeing tid=0x%x for cid=0x%x\n",
|
|
cqe->itid, qedi_conn->iscsi_conn_id);
|
|
wake_up(&qedi_conn->wait_queue);
|
|
}
|
|
}
|
|
|
|
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, 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)
|
|
{
|
|
qedi_conn->ep->db_data.sq_prod = qedi_conn->ep->fw_sq_prod_idx;
|
|
|
|
/* wmb - Make sure fw idx is coherent */
|
|
wmb();
|
|
writel(*(u32 *)&qedi_conn->ep->db_data, 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();
|
|
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 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 iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
|
|
tid);
|
|
memset(fw_task_ctx, 0, sizeof(struct 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 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 iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
|
|
tid);
|
|
memset(fw_task_ctx, 0, sizeof(struct 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;
|
|
atomic_set(&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 ==
|
|
atomic_read(&qedi_conn->cmd_cleanup_cmpl)) ||
|
|
test_bit(QEDI_IN_RECOVERY, &qedi->flags),
|
|
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,
|
|
atomic_read(&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,
|
|
atomic_read(&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 ==
|
|
atomic_read(&qedi_conn->cmd_cleanup_cmpl)) ||
|
|
test_bit(QEDI_IN_RECOVERY, &qedi->flags),
|
|
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;
|
|
atomic_set(&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_abort_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 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;
|
|
|
|
mtask = qedi_cmd->task;
|
|
tmf_hdr = (struct iscsi_tm *)mtask->hdr;
|
|
|
|
spin_lock_bh(&conn->session->back_lock);
|
|
ctask = iscsi_itt_to_ctask(conn, tmf_hdr->rtt);
|
|
if (!ctask) {
|
|
spin_unlock_bh(&conn->session->back_lock);
|
|
QEDI_ERR(&qedi->dbg_ctx, "Invalid RTT. Letting abort timeout.\n");
|
|
goto clear_cleanup;
|
|
}
|
|
|
|
if (iscsi_task_is_completed(ctask)) {
|
|
spin_unlock_bh(&conn->session->back_lock);
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
|
|
"Task already completed\n");
|
|
/*
|
|
* We have to still send the TMF because libiscsi needs the
|
|
* response to avoid a timeout.
|
|
*/
|
|
goto send_tmf;
|
|
}
|
|
spin_unlock_bh(&conn->session->back_lock);
|
|
|
|
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 clear_cleanup;
|
|
}
|
|
|
|
list_work = kzalloc(sizeof(*list_work), GFP_NOIO);
|
|
if (!list_work) {
|
|
QEDI_ERR(&qedi->dbg_ctx, "Memory allocation failed\n");
|
|
goto clear_cleanup;
|
|
}
|
|
|
|
qedi_cmd->type = TYPEIO;
|
|
qedi_cmd->state = CLEANUP_WAIT;
|
|
list_work->qedi_cmd = qedi_cmd;
|
|
list_work->rtid = cmd->task_id;
|
|
list_work->state = QEDI_WORK_SCHEDULED;
|
|
list_work->ctask = ctask;
|
|
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;
|
|
}
|
|
|
|
send_tmf:
|
|
send_iscsi_tmf(qedi_conn, qedi_cmd->task, ctask);
|
|
goto clear_cleanup;
|
|
|
|
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_cleanup:
|
|
spin_lock(&qedi_conn->tmf_work_lock);
|
|
qedi_conn->fw_cleanup_works--;
|
|
spin_unlock(&qedi_conn->tmf_work_lock);
|
|
}
|
|
|
|
static int send_iscsi_tmf(struct qedi_conn *qedi_conn, struct iscsi_task *mtask,
|
|
struct iscsi_task *ctask)
|
|
{
|
|
struct iscsi_tmf_request_hdr tmf_pdu_header;
|
|
struct iscsi_task_params task_params;
|
|
struct qedi_ctx *qedi = qedi_conn->qedi;
|
|
struct iscsi_task_context *fw_task_ctx;
|
|
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;
|
|
|
|
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 iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
|
|
tid);
|
|
memset(fw_task_ctx, 0, sizeof(struct 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) {
|
|
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));
|
|
init_initiator_tmf_request_task(&task_params, &tmf_pdu_header);
|
|
|
|
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_tmf(struct qedi_conn *qedi_conn, struct iscsi_task *mtask)
|
|
{
|
|
struct iscsi_tm *tmf_hdr = (struct iscsi_tm *)mtask->hdr;
|
|
struct qedi_cmd *qedi_cmd = mtask->dd_data;
|
|
struct qedi_ctx *qedi = qedi_conn->qedi;
|
|
int rc = 0;
|
|
|
|
switch (tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) {
|
|
case ISCSI_TM_FUNC_ABORT_TASK:
|
|
spin_lock(&qedi_conn->tmf_work_lock);
|
|
qedi_conn->fw_cleanup_works++;
|
|
spin_unlock(&qedi_conn->tmf_work_lock);
|
|
|
|
INIT_WORK(&qedi_cmd->tmf_work, qedi_abort_work);
|
|
queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work);
|
|
break;
|
|
case ISCSI_TM_FUNC_LOGICAL_UNIT_RESET:
|
|
case ISCSI_TM_FUNC_TARGET_WARM_RESET:
|
|
case ISCSI_TM_FUNC_TARGET_COLD_RESET:
|
|
rc = send_iscsi_tmf(qedi_conn, mtask, NULL);
|
|
break;
|
|
default:
|
|
QEDI_ERR(&qedi->dbg_ctx, "Invalid tmf, cid=0x%x\n",
|
|
qedi_conn->iscsi_conn_id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
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 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 iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
|
|
tid);
|
|
memset(fw_task_ctx, 0, sizeof(struct 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 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 iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
|
|
tid);
|
|
memset(fw_task_ctx, 0, sizeof(struct 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 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 iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
|
|
tid);
|
|
memset(fw_task_ctx, 0, sizeof(struct 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;
|
|
}
|