This patch adds support for iscsi_transport LLD Login,
Logout, NOP-IN/NOP-OUT, Async, Reject PDU processing
and Firmware async event handling support.
Signed-off-by: Nilesh Javali
Signed-off-by: Adheer Chandravanshi
Signed-off-by: Chad Dupuis
Signed-off-by: Saurav Kashyap
Signed-off-by: Arun Easi
Signed-off-by: Manish Rangankar
---
drivers/scsi/qedi/qedi_fw.c| 1106 +++
drivers/scsi/qedi/qedi_gbl.h | 67 ++
drivers/scsi/qedi/qedi_iscsi.c | 1611
drivers/scsi/qedi/qedi_iscsi.h | 232 ++
drivers/scsi/qedi/qedi_main.c | 166 +
5 files changed, 3182 insertions(+)
create mode 100644 drivers/scsi/qedi/qedi_fw.c
create mode 100644 drivers/scsi/qedi/qedi_gbl.h
create mode 100644 drivers/scsi/qedi/qedi_iscsi.c
create mode 100644 drivers/scsi/qedi/qedi_iscsi.h
diff --git a/drivers/scsi/qedi/qedi_fw.c b/drivers/scsi/qedi/qedi_fw.c
new file mode 100644
index 000..5ee62a2
--- /dev/null
+++ b/drivers/scsi/qedi/qedi_fw.c
@@ -0,0 +1,1106 @@
+/*
+ * QLogic iSCSI Offload Driver
+ * Copyright (c) 2016 Cavium Inc.
+ *
+ * This software is available under the terms of the GNU General Public License
+ * (GPL) Version 2, available from the file COPYING in the main directory of
+ * this source tree.
+ */
+
+#include
+#include
+#include
+
+#include "qedi.h"
+#include "qedi_iscsi.h"
+#include "qedi_gbl.h"
+
+static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn,
+ struct iscsi_task *mtask);
+
+void qedi_iscsi_unmap_sg_list(struct qedi_cmd *cmd)
+{
+ struct scsi_cmnd *sc = cmd->scsi_cmd;
+
+ if (cmd->io_tbl.sge_valid && sc) {
+ cmd->io_tbl.sge_valid = 0;
+ scsi_dma_unmap(sc);
+ }
+}
+
+static void qedi_process_logout_resp(struct qedi_ctx *qedi,
+union iscsi_cqe *cqe,
+struct iscsi_task *task,
+struct qedi_conn *qedi_conn)
+{
+ struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
+ struct iscsi_logout_rsp *resp_hdr;
+ struct iscsi_session *session = conn->session;
+ struct iscsi_logout_response_hdr *cqe_logout_response;
+ struct qedi_cmd *cmd;
+
+ cmd = (struct qedi_cmd *)task->dd_data;
+ cqe_logout_response = &cqe->cqe_common.iscsi_hdr.logout_response;
+ spin_lock(&session->back_lock);
+ resp_hdr = (struct iscsi_logout_rsp *)&qedi_conn->gen_pdu.resp_hdr;
+ memset(resp_hdr, 0, sizeof(struct iscsi_hdr));
+ resp_hdr->opcode = cqe_logout_response->opcode;
+ resp_hdr->flags = cqe_logout_response->flags;
+ resp_hdr->hlength = 0;
+
+ resp_hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age);
+ resp_hdr->statsn = cpu_to_be32(cqe_logout_response->stat_sn);
+ resp_hdr->exp_cmdsn = cpu_to_be32(cqe_logout_response->exp_cmd_sn);
+ resp_hdr->max_cmdsn = cpu_to_be32(cqe_logout_response->max_cmd_sn);
+
+ resp_hdr->t2wait = cpu_to_be32(cqe_logout_response->time2wait);
+ resp_hdr->t2retain = cpu_to_be32(cqe_logout_response->time2retain);
+
+ 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);
+
+ if (likely(cmd->io_cmd_in_list)) {
+ cmd->io_cmd_in_list = false;
+ list_del_init(&cmd->io_cmd);
+ qedi_conn->active_cmd_count--;
+ } else {
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
+ "Active cmd list node already deleted, tid=0x%x,
cid=0x%x, io_cmd_node=%p\n",
+ cmd->task_id, qedi_conn->iscsi_conn_id,
+ &cmd->io_cmd);
+ }
+
+ cmd->state = RESPONSE_RECEIVED;
+ qedi_clear_task_idx(qedi, cmd->task_id);
+ __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0);
+
+ spin_unlock(&session->back_lock);
+}
+
+static void qedi_process_text_resp(struct qedi_ctx *qedi,
+ union iscsi_cqe *cqe,
+ struct iscsi_task *task,
+ struct qedi_conn *qedi_conn)
+{
+ struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
+ struct iscsi_session *session = conn->session;
+ struct iscsi_task_context *task_ctx;
+ struct iscsi_text_rsp *resp_hdr_ptr;
+ struct iscsi_text_response_hdr *cqe_text_response;
+ struct qedi_cmd *cmd;
+ int pld_len;
+ u32 *tmp;
+
+ cmd = (struct qedi_cmd *)task->dd_data;
+ task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id);
+
+ cqe_text_response = &cqe->cqe_common.iscsi_hdr.text_response;
+ spin_lock(&session->back_lock);
+ resp_hdr_ptr = (struct iscsi_text_rsp *)&qedi_conn->gen_pdu.resp_hdr;
+ memset(resp_hdr_ptr, 0, sizeof(struct iscsi_hdr));
+ resp_hdr_ptr->opcode = cq
