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Message-ID: <1478588223-16183-7-git-send-email-manish.rangankar@cavium.com>
Date: Mon, 7 Nov 2016 22:57:03 -0800
From: Manish Rangankar <manish.rangankar@...ium.com>
To: <martin.petersen@...cle.com>, <lduncan@...e.com>,
<cleech@...hat.com>
CC: <linux-scsi@...r.kernel.org>, <netdev@...r.kernel.org>,
<QLogic-Storage-Upstream@...ium.com>, <Yuval.Mintz@...ium.com>
Subject: [PATCH v2 6/6] qedi: Add support for data path.
This patch adds support for data path and TMF handling.
Signed-off-by: Nilesh Javali <nilesh.javali@...ium.com>
Signed-off-by: Adheer Chandravanshi <adheer.chandravanshi@...gic.com>
Signed-off-by: Chad Dupuis <chad.dupuis@...ium.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@...ium.com>
Signed-off-by: Arun Easi <arun.easi@...ium.com>
Signed-off-by: Manish Rangankar <manish.rangankar@...ium.com>
---
drivers/scsi/qedi/qedi_fw.c | 1272 ++++++++++++++++++++++++++++++++++++++++
drivers/scsi/qedi/qedi_gbl.h | 6 +
drivers/scsi/qedi/qedi_iscsi.c | 13 +
drivers/scsi/qedi/qedi_main.c | 4 +
4 files changed, 1295 insertions(+)
diff --git a/drivers/scsi/qedi/qedi_fw.c b/drivers/scsi/qedi/qedi_fw.c
index 5ee62a2..560c3e6 100644
--- a/drivers/scsi/qedi/qedi_fw.c
+++ b/drivers/scsi/qedi/qedi_fw.c
@@ -146,6 +146,114 @@ static void qedi_process_text_resp(struct qedi_ctx *qedi,
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) {
+ clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
+ qedi_clear_task_idx(qedi, qedi_cmd->task_id);
+ iscsi_unblock_session(session->cls_session);
+ return;
+ }
+
+ 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);
+ 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;
+ u32 *tmp;
+
+ 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_KERNEL);
+ 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));
+ tmp = (u32 *)resp_hdr_ptr->dlength;
+ 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;
+
+ 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--;
+ }
+
+ 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,
@@ -466,6 +574,121 @@ static void qedi_process_reject_mesg(struct qedi_ctx *qedi,
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;
+ bool mark_cmd_node_deleted = false;
+ 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--;
+ mark_cmd_node_deleted = true;
+ }
+ 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 (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,
@@ -478,9 +701,16 @@ static void qedi_mtask_completion(struct qedi_ctx *qedi,
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;
@@ -516,6 +746,131 @@ static void qedi_process_nopin_local_cmpl(struct qedi_ctx *qedi,
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 *cmd_new, *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];
+
+ /* 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);
+ 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);
+ cmd_new = task->dd_data;
+
+ 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);
+ WARN_ON(1);
+ }
+}
+
void qedi_fp_process_cqes(struct qedi_work *work)
{
struct qedi_ctx *qedi = work->qedi;
@@ -602,6 +957,14 @@ void qedi_fp_process_cqes(struct qedi_work *work)
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;
@@ -889,6 +1252,439 @@ int qedi_send_iscsi_logout(struct qedi_conn *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);
+
+ 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 (do_not_recover) {
+ QEDI_ERR(&qedi->dbg_ctx, "DONT SEND CLEANUP/ABORT %d\n",
+ do_not_recover);
+ goto abort_ret;
+ }
+
+ list_work = kzalloc(sizeof(*list_work), GFP_ATOMIC);
+ if (!list_work) {
+ QEDI_ERR(&qedi->dbg_ctx, "Memory alloction 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);
+ 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_conn *conn = qedi_conn->cls_conn->dd_data;
+ struct qedi_ctx *qedi = qedi_conn->qedi;
+ struct iscsi_task_context *fw_task_ctx;
+ struct iscsi_tmf_request_hdr *fw_tmf_request;
+ struct iscsi_sge *single_sge;
+ struct qedi_cmd *qedi_cmd;
+ struct qedi_cmd *cmd;
+ struct iscsi_task *ctask;
+ struct iscsi_tm *tmf_hdr;
+ struct iscsi_sge *req_sge;
+ struct iscsi_sge *resp_sge;
+ u32 lun[2];
+ s16 tid = 0, ptu_invalidate = 0;
+
+ req_sge = (struct iscsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
+ resp_sge = (struct iscsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
+ qedi_cmd = (struct qedi_cmd *)mtask->dd_data;
+ tmf_hdr = (struct iscsi_tm *)mtask->hdr;
+
+ tid = qedi_cmd->task_id;
+ qedi_update_itt_map(qedi, tid, mtask->itt, qedi_cmd);
+
+ fw_task_ctx = qedi_get_task_mem(&qedi->tasks, tid);
+ memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));
+
+ fw_tmf_request = &fw_task_ctx->ystorm_st_context.pdu_hdr.tmf_request;
+ fw_tmf_request->itt = qedi_set_itt(tid, get_itt(mtask->itt));
+ fw_tmf_request->cmd_sn = be32_to_cpu(tmf_hdr->cmdsn);
+
+ memcpy(lun, &tmf_hdr->lun, sizeof(struct scsi_lun));
+ fw_tmf_request->lun.lo = be32_to_cpu(lun[0]);
+ fw_tmf_request->lun.hi = be32_to_cpu(lun[1]);
+
+ if (qedi->tid_reuse_count[tid] == QEDI_MAX_TASK_NUM) {
+ ptu_invalidate = 1;
+ qedi->tid_reuse_count[tid] = 0;
+ }
+ fw_task_ctx->ystorm_st_context.state.reuse_count =
+ qedi->tid_reuse_count[tid];
+ fw_task_ctx->mstorm_st_context.reuse_count =
+ qedi->tid_reuse_count[tid]++;
+
+ 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;
+ fw_tmf_request->rtt =
+ qedi_set_itt(cmd->task_id,
+ get_itt(tmf_hdr->rtt));
+ } else {
+ fw_tmf_request->rtt = ISCSI_RESERVED_TAG;
+ }
+
+ fw_tmf_request->opcode = tmf_hdr->opcode;
+ fw_tmf_request->function = tmf_hdr->flags;
+ fw_tmf_request->hdr_second_dword = ntoh24(tmf_hdr->dlength);
+ fw_tmf_request->ref_cmd_sn = be32_to_cpu(tmf_hdr->refcmdsn);
+
+ single_sge = &fw_task_ctx->mstorm_st_context.sgl_union.single_sge;
+ fw_task_ctx->mstorm_st_context.task_type = ISCSI_TASK_TYPE_MIDPATH;
+ fw_task_ctx->mstorm_ag_context.task_cid = (u16)qedi_conn->iscsi_conn_id;
+ single_sge->sge_addr.lo = resp_sge->sge_addr.lo;
+ single_sge->sge_addr.hi = resp_sge->sge_addr.hi;
+ single_sge->sge_len = resp_sge->sge_len;
+
+ SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags,
+ ISCSI_MFLAGS_SINGLE_SGE, 1);
+ SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags,
+ ISCSI_MFLAGS_SLOW_IO, 0);
+ fw_task_ctx->mstorm_st_context.sgl_size = 1;
+ fw_task_ctx->mstorm_st_context.rem_task_size = resp_sge->sge_len;
+
+ /* Ustorm context */
+ fw_task_ctx->ustorm_st_context.rem_rcv_len = 0;
+ fw_task_ctx->ustorm_st_context.exp_data_transfer_len = 0;
+ fw_task_ctx->ustorm_st_context.exp_data_sn = 0;
+ fw_task_ctx->ustorm_st_context.task_type = ISCSI_TASK_TYPE_MIDPATH;
+ fw_task_ctx->ustorm_st_context.cq_rss_number = 0;
+
+ SET_FIELD(fw_task_ctx->ustorm_st_context.flags,
+ USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP, 0);
+ SET_FIELD(fw_task_ctx->ustorm_st_context.reg1.reg1_map,
+ ISCSI_REG1_NUM_FAST_SGES, 0);
+
+ fw_task_ctx->ustorm_ag_context.icid = (u16)qedi_conn->iscsi_conn_id;
+ SET_FIELD(fw_task_ctx->ustorm_ag_context.flags1,
+ USTORM_ISCSI_TASK_AG_CTX_R2T2RECV, 1);
+ fw_task_ctx->ustorm_st_context.lun.lo = be32_to_cpu(lun[0]);
+ fw_task_ctx->ustorm_st_context.lun.hi = be32_to_cpu(lun[1]);
+
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
+ "Add TMF to SQ, tmf tid=0x%x, itt=0x%x, cid=0x%x\n",
+ tid, mtask->itt, qedi_conn->iscsi_conn_id);
+
+ 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_add_to_sq(qedi_conn, mtask, tid, ptu_invalidate, false);
+ 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)
{
@@ -1104,3 +1900,479 @@ int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn,
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 iscsi_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 iscsi_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-cashed-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 iscsi_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;
+ u8 op;
+
+ 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];
+ 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_task_context *fw_task_ctx;
+ struct iscsi_cached_sge_ctx *cached_sge;
+ struct iscsi_phys_sgl_ctx *phys_sgl;
+ struct iscsi_virt_sgl_ctx *virt_sgl;
+ struct ystorm_iscsi_task_st_ctx *yst_cxt;
+ struct mstorm_iscsi_task_st_ctx *mst_cxt;
+ struct iscsi_sgl *sgl_struct;
+ struct iscsi_sge *single_sge;
+ struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr;
+ struct iscsi_sge *bd = cmd->io_tbl.sge_tbl;
+ enum iscsi_task_type task_type;
+ struct iscsi_cmd_hdr *fw_cmd;
+ u32 lun[2];
+ u16 cq_idx = smp_processor_id() % qedi->num_queues;
+ s16 ptu_invalidate = 0;
+ s16 tid = 0;
+ u8 num_fast_sgs;
+
+ tid = qedi_get_task_idx(qedi);
+ if (tid == -1)
+ return -ENOMEM;
+
+ qedi_iscsi_map_sg_list(cmd);
+
+ int_to_scsilun(sc->device->lun, (struct scsi_lun *)lun);
+ fw_task_ctx = qedi_get_task_mem(&qedi->tasks, tid);
+
+ memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));
+ cmd->task_id = tid;
+
+ /* Ystorm context */
+ fw_cmd = &fw_task_ctx->ystorm_st_context.pdu_hdr.cmd;
+ SET_FIELD(fw_cmd->flags_attr, ISCSI_CMD_HDR_ATTR, ISCSI_ATTR_SIMPLE);
+
+ if (sc->sc_data_direction == DMA_TO_DEVICE) {
+ if (conn->session->initial_r2t_en) {
+ fw_task_ctx->ustorm_ag_context.exp_data_acked =
+ min((conn->session->imm_data_en *
+ conn->max_xmit_dlength),
+ conn->session->first_burst);
+ fw_task_ctx->ustorm_ag_context.exp_data_acked =
+ min(fw_task_ctx->ustorm_ag_context.exp_data_acked,
+ scsi_bufflen(sc));
+ } else {
+ fw_task_ctx->ustorm_ag_context.exp_data_acked =
+ min(conn->session->first_burst, scsi_bufflen(sc));
+ }
+
+ SET_FIELD(fw_cmd->flags_attr, ISCSI_CMD_HDR_WRITE, 1);
+ task_type = ISCSI_TASK_TYPE_INITIATOR_WRITE;
+ } else {
+ if (scsi_bufflen(sc))
+ SET_FIELD(fw_cmd->flags_attr, ISCSI_CMD_HDR_READ, 1);
+ task_type = ISCSI_TASK_TYPE_INITIATOR_READ;
+ }
+
+ fw_cmd->lun.lo = be32_to_cpu(lun[0]);
+ fw_cmd->lun.hi = be32_to_cpu(lun[1]);
+
+ qedi_update_itt_map(qedi, tid, task->itt, cmd);
+ fw_cmd->itt = qedi_set_itt(tid, get_itt(task->itt));
+ fw_cmd->expected_transfer_length = scsi_bufflen(sc);
+ fw_cmd->cmd_sn = be32_to_cpu(hdr->cmdsn);
+ fw_cmd->opcode = hdr->opcode;
+ qedi_cpy_scsi_cdb(sc, (u32 *)fw_cmd->cdb);
+
+ /* Mstorm context */
+ fw_task_ctx->mstorm_st_context.sense_db.lo = (u32)cmd->sense_buffer_dma;
+ fw_task_ctx->mstorm_st_context.sense_db.hi =
+ (u32)((u64)cmd->sense_buffer_dma >> 32);
+ fw_task_ctx->mstorm_ag_context.task_cid = qedi_conn->iscsi_conn_id;
+ fw_task_ctx->mstorm_st_context.task_type = task_type;
+
+ if (qedi->tid_reuse_count[tid] == QEDI_MAX_TASK_NUM) {
+ ptu_invalidate = 1;
+ qedi->tid_reuse_count[tid] = 0;
+ }
+ fw_task_ctx->ystorm_st_context.state.reuse_count =
+ qedi->tid_reuse_count[tid];
+ fw_task_ctx->mstorm_st_context.reuse_count =
+ qedi->tid_reuse_count[tid]++;
+
+ /* Ustorm context */
+ fw_task_ctx->ustorm_st_context.rem_rcv_len = scsi_bufflen(sc);
+ fw_task_ctx->ustorm_st_context.exp_data_transfer_len = scsi_bufflen(sc);
+ fw_task_ctx->ustorm_st_context.exp_data_sn =
+ be32_to_cpu(hdr->exp_statsn);
+ fw_task_ctx->ustorm_st_context.task_type = task_type;
+ fw_task_ctx->ustorm_st_context.cq_rss_number = cq_idx;
+ fw_task_ctx->ustorm_ag_context.icid = (u16)qedi_conn->iscsi_conn_id;
+
+ SET_FIELD(fw_task_ctx->ustorm_ag_context.flags1,
+ USTORM_ISCSI_TASK_AG_CTX_R2T2RECV, 1);
+ SET_FIELD(fw_task_ctx->ustorm_st_context.flags,
+ USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP, 0);
+
+ num_fast_sgs = (cmd->io_tbl.sge_valid ?
+ min((u16)QEDI_FAST_SGE_COUNT,
+ (u16)cmd->io_tbl.sge_valid) : 0);
+ SET_FIELD(fw_task_ctx->ustorm_st_context.reg1.reg1_map,
+ ISCSI_REG1_NUM_FAST_SGES, num_fast_sgs);
+
+ fw_task_ctx->ustorm_st_context.lun.lo = be32_to_cpu(lun[0]);
+ fw_task_ctx->ustorm_st_context.lun.hi = be32_to_cpu(lun[1]);
+
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "Total sge count [%d]\n",
+ cmd->io_tbl.sge_valid);
+
+ yst_cxt = &fw_task_ctx->ystorm_st_context;
+ mst_cxt = &fw_task_ctx->mstorm_st_context;
+ /* Tx path */
+ if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) {
+ /* not considering superIO or FastIO */
+ if (cmd->io_tbl.sge_valid == 1) {
+ cached_sge = &yst_cxt->state.sgl_ctx_union.cached_sge;
+ cached_sge->sge.sge_addr.lo = bd[0].sge_addr.lo;
+ cached_sge->sge.sge_addr.hi = bd[0].sge_addr.hi;
+ cached_sge->sge.sge_len = bd[0].sge_len;
+ qedi->cached_sgls++;
+ } else if ((cmd->io_tbl.sge_valid != 1) && cmd->use_slowpath) {
+ SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags,
+ ISCSI_MFLAGS_SLOW_IO, 1);
+ SET_FIELD(fw_task_ctx->ustorm_st_context.reg1.reg1_map,
+ ISCSI_REG1_NUM_FAST_SGES, 0);
+ phys_sgl = &yst_cxt->state.sgl_ctx_union.phys_sgl;
+ phys_sgl->sgl_base.lo = (u32)(cmd->io_tbl.sge_tbl_dma);
+ phys_sgl->sgl_base.hi =
+ (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32);
+ phys_sgl->sgl_size = cmd->io_tbl.sge_valid;
+ qedi->slow_sgls++;
+ } else if ((cmd->io_tbl.sge_valid != 1) && !cmd->use_slowpath) {
+ SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags,
+ ISCSI_MFLAGS_SLOW_IO, 0);
+ SET_FIELD(fw_task_ctx->ustorm_st_context.reg1.reg1_map,
+ ISCSI_REG1_NUM_FAST_SGES,
+ min((u16)QEDI_FAST_SGE_COUNT,
+ (u16)cmd->io_tbl.sge_valid));
+ virt_sgl = &yst_cxt->state.sgl_ctx_union.virt_sgl;
+ virt_sgl->sgl_base.lo = (u32)(cmd->io_tbl.sge_tbl_dma);
+ virt_sgl->sgl_base.hi =
+ (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32);
+ virt_sgl->sgl_initial_offset =
+ (u32)bd[0].sge_addr.lo & (QEDI_PAGE_SIZE - 1);
+ qedi->fast_sgls++;
+ }
+ fw_task_ctx->mstorm_st_context.sgl_size = cmd->io_tbl.sge_valid;
+ fw_task_ctx->mstorm_st_context.rem_task_size = scsi_bufflen(sc);
+ } else {
+ /* Rx path */
+ if (cmd->io_tbl.sge_valid == 1) {
+ SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags,
+ ISCSI_MFLAGS_SLOW_IO, 0);
+ SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags,
+ ISCSI_MFLAGS_SINGLE_SGE, 1);
+ single_sge = &mst_cxt->sgl_union.single_sge;
+ single_sge->sge_addr.lo = bd[0].sge_addr.lo;
+ single_sge->sge_addr.hi = bd[0].sge_addr.hi;
+ single_sge->sge_len = bd[0].sge_len;
+ qedi->cached_sgls++;
+ } else if ((cmd->io_tbl.sge_valid != 1) && cmd->use_slowpath) {
+ sgl_struct = &mst_cxt->sgl_union.sgl_struct;
+ sgl_struct->sgl_addr.lo =
+ (u32)(cmd->io_tbl.sge_tbl_dma);
+ sgl_struct->sgl_addr.hi =
+ (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32);
+ SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags,
+ ISCSI_MFLAGS_SLOW_IO, 1);
+ SET_FIELD(fw_task_ctx->ustorm_st_context.reg1.reg1_map,
+ ISCSI_REG1_NUM_FAST_SGES, 0);
+ sgl_struct->updated_sge_size = 0;
+ sgl_struct->updated_sge_offset = 0;
+ qedi->slow_sgls++;
+ } else if ((cmd->io_tbl.sge_valid != 1) && !cmd->use_slowpath) {
+ sgl_struct = &mst_cxt->sgl_union.sgl_struct;
+ sgl_struct->sgl_addr.lo =
+ (u32)(cmd->io_tbl.sge_tbl_dma);
+ sgl_struct->sgl_addr.hi =
+ (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32);
+ sgl_struct->byte_offset =
+ (u32)bd[0].sge_addr.lo & (QEDI_PAGE_SIZE - 1);
+ SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags,
+ ISCSI_MFLAGS_SLOW_IO, 0);
+ SET_FIELD(fw_task_ctx->ustorm_st_context.reg1.reg1_map,
+ ISCSI_REG1_NUM_FAST_SGES, 0);
+ sgl_struct->updated_sge_size = 0;
+ sgl_struct->updated_sge_offset = 0;
+ qedi->fast_sgls++;
+ }
+ fw_task_ctx->mstorm_st_context.sgl_size = cmd->io_tbl.sge_valid;
+ fw_task_ctx->mstorm_st_context.rem_task_size = scsi_bufflen(sc);
+ }
+
+ if (cmd->io_tbl.sge_valid == 1)
+ /* Singel-SGL */
+ qedi->use_cached_sge = true;
+ else {
+ if (cmd->use_slowpath)
+ qedi->use_slow_sge = true;
+ else
+ qedi->use_fast_sge = true;
+ }
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
+ "%s: %s-SGL: num_sges=0x%x first-sge-lo=0x%x first-sge-hi=0x%x",
+ (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, (u32)(cmd->io_tbl.sge_tbl_dma),
+ (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32));
+
+ /* Add command in active command list */
+ 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_add_to_sq(qedi_conn, task, tid, ptu_invalidate, false);
+ qedi_ring_doorbell(qedi_conn);
+ if (io_tracing)
+ qedi_trace_io(qedi, task, tid, QEDI_IO_TRACE_REQ);
+
+ return 0;
+}
+
+int qedi_iscsi_cleanup_task(struct iscsi_task *task, bool mark_cmd_node_deleted)
+{
+ struct iscsi_conn *conn = task->conn;
+ struct qedi_conn *qedi_conn = conn->dd_data;
+ struct qedi_cmd *cmd = task->dd_data;
+ s16 ptu_invalidate = 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);
+
+ qedi_add_to_sq(qedi_conn, task, cmd->task_id, ptu_invalidate, true);
+ qedi_ring_doorbell(qedi_conn);
+
+ return 0;
+}
diff --git a/drivers/scsi/qedi/qedi_gbl.h b/drivers/scsi/qedi/qedi_gbl.h
index 3af8bd7..e8661e5 100644
--- a/drivers/scsi/qedi/qedi_gbl.h
+++ b/drivers/scsi/qedi/qedi_gbl.h
@@ -28,11 +28,14 @@ int qedi_send_iscsi_login(struct qedi_conn *qedi_conn,
struct iscsi_task *task);
int qedi_send_iscsi_logout(struct qedi_conn *qedi_conn,
struct iscsi_task *task);
+int qedi_iscsi_abort_work(struct qedi_conn *qedi_conn,
+ struct iscsi_task *mtask);
int qedi_send_iscsi_text(struct qedi_conn *qedi_conn,
struct iscsi_task *task);
int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn,
struct iscsi_task *task,
char *datap, int data_len, int unsol);
+int qedi_iscsi_send_ioreq(struct iscsi_task *task);
int qedi_get_task_idx(struct qedi_ctx *qedi);
void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx);
int qedi_iscsi_cleanup_task(struct iscsi_task *task,
@@ -53,6 +56,9 @@ void qedi_start_conn_recovery(struct qedi_ctx *qedi,
void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu);
int qedi_recover_all_conns(struct qedi_ctx *qedi);
void qedi_fp_process_cqes(struct qedi_work *work);
+int qedi_cleanup_all_io(struct qedi_ctx *qedi,
+ struct qedi_conn *qedi_conn,
+ struct iscsi_task *task, bool in_recovery);
void qedi_trace_io(struct qedi_ctx *qedi, struct iscsi_task *task,
u16 tid, int8_t direction);
int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id);
diff --git a/drivers/scsi/qedi/qedi_iscsi.c b/drivers/scsi/qedi/qedi_iscsi.c
index 4a41367..1cc296b 100644
--- a/drivers/scsi/qedi/qedi_iscsi.c
+++ b/drivers/scsi/qedi/qedi_iscsi.c
@@ -47,6 +47,13 @@ struct scsi_host_template qedi_host_template = {
.module = THIS_MODULE,
.name = "QLogic QEDI 25/40/100Gb iSCSI Initiator Driver",
.proc_name = QEDI_MODULE_NAME,
+ .queuecommand = iscsi_queuecommand,
+ .eh_abort_handler = iscsi_eh_abort,
+ .eh_device_reset_handler = iscsi_eh_device_reset,
+ .eh_target_reset_handler = iscsi_eh_recover_target,
+ .eh_host_reset_handler = qedi_eh_host_reset,
+ .target_alloc = iscsi_target_alloc,
+ .change_queue_depth = scsi_change_queue_depth,
.can_queue = QEDI_MAX_ISCSI_TASK,
.this_id = -1,
.sg_tablesize = QEDI_ISCSI_MAX_BDS_PER_CMD,
@@ -748,6 +755,9 @@ static int qedi_iscsi_send_generic_request(struct iscsi_task *task)
case ISCSI_OP_LOGOUT:
rc = qedi_send_iscsi_logout(qedi_conn, task);
break;
+ case ISCSI_OP_SCSI_TMFUNC:
+ rc = qedi_iscsi_abort_work(qedi_conn, task);
+ break;
case ISCSI_OP_TEXT:
rc = qedi_send_iscsi_text(qedi_conn, task);
break;
@@ -797,6 +807,9 @@ static int qedi_task_xmit(struct iscsi_task *task)
if (!sc)
return qedi_mtask_xmit(conn, task);
+
+ cmd->scsi_cmd = sc;
+ return qedi_iscsi_send_ioreq(task);
}
static struct iscsi_endpoint *
diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c
index d3f47dd..b6010e0 100644
--- a/drivers/scsi/qedi/qedi_main.c
+++ b/drivers/scsi/qedi/qedi_main.c
@@ -43,6 +43,10 @@
module_param(debug, uint, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, " Default debug level");
+uint io_tracing;
+module_param(io_tracing, uint, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(io_tracing,
+ " Enable logging of SCSI requests/completions into trace buffer. (default off).");
const struct qed_iscsi_ops *qedi_ops;
static struct scsi_transport_template *qedi_scsi_transport;
static struct pci_driver qedi_pci_driver;
--
1.8.3.1
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