/**
 * Copyright (C) 2005 - 2011 Emulex
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.  The full GNU General
 * Public License is included in this distribution in the file called COPYING.
 *
 * Written by: Jayamohan Kallickal (jayamohan.kallickal@emulex.com)
 *
 * Contact Information:
 * linux-drivers@emulex.com
 *
 * Emulex
 * 3333 Susan Street
 * Costa Mesa, CA 92626
 */

#include <linux/bsg-lib.h>
#include <scsi/scsi_transport_iscsi.h>
#include <scsi/scsi_bsg_iscsi.h>
#include "be_mgmt.h"
#include "be_iscsi.h"

/**
 * mgmt_reopen_session()- Reopen a session based on reopen_type
 * @phba: Device priv structure instance
 * @reopen_type: Type of reopen_session FW should do.
 * @sess_handle: Session Handle of the session to be re-opened
 *
 * return
 *	the TAG used for MBOX Command
 *
 **/
unsigned int mgmt_reopen_session(struct beiscsi_hba *phba,
				  unsigned int reopen_type,
				  unsigned int sess_handle)
{
	struct be_ctrl_info *ctrl = &phba->ctrl;
	struct be_mcc_wrb *wrb;
	struct be_cmd_reopen_session_req *req;
	unsigned int tag = 0;

	beiscsi_log(phba, KERN_INFO,
		    BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
		    "BG_%d : In bescsi_get_boot_target\n");

	spin_lock(&ctrl->mbox_lock);
	tag = alloc_mcc_tag(phba);
	if (!tag) {
		spin_unlock(&ctrl->mbox_lock);
		return tag;
	}

	wrb = wrb_from_mccq(phba);
	req = embedded_payload(wrb);
	wrb->tag0 |= tag;
	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI,
			   OPCODE_ISCSI_INI_DRIVER_REOPEN_ALL_SESSIONS,
			   sizeof(struct be_cmd_reopen_session_resp));

	/* set the reopen_type,sess_handle */
	req->reopen_type = reopen_type;
	req->session_handle = sess_handle;

	be_mcc_notify(phba);
	spin_unlock(&ctrl->mbox_lock);
	return tag;
}

unsigned int mgmt_get_boot_target(struct beiscsi_hba *phba)
{
	struct be_ctrl_info *ctrl = &phba->ctrl;
	struct be_mcc_wrb *wrb;
	struct be_cmd_get_boot_target_req *req;
	unsigned int tag = 0;

	beiscsi_log(phba, KERN_INFO,
		    BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
		    "BG_%d : In bescsi_get_boot_target\n");

	spin_lock(&ctrl->mbox_lock);
	tag = alloc_mcc_tag(phba);
	if (!tag) {
		spin_unlock(&ctrl->mbox_lock);
		return tag;
	}

	wrb = wrb_from_mccq(phba);
	req = embedded_payload(wrb);
	wrb->tag0 |= tag;
	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI,
			   OPCODE_ISCSI_INI_BOOT_GET_BOOT_TARGET,
			   sizeof(struct be_cmd_get_boot_target_resp));

	be_mcc_notify(phba);
	spin_unlock(&ctrl->mbox_lock);
	return tag;
}

unsigned int mgmt_get_session_info(struct beiscsi_hba *phba,
				   u32 boot_session_handle,
				   struct be_dma_mem *nonemb_cmd)
{
	struct be_ctrl_info *ctrl = &phba->ctrl;
	struct be_mcc_wrb *wrb;
	unsigned int tag = 0;
	struct  be_cmd_get_session_req *req;
	struct be_cmd_get_session_resp *resp;
	struct be_sge *sge;

	beiscsi_log(phba, KERN_INFO,
		    BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
		    "BG_%d : In beiscsi_get_session_info\n");

	spin_lock(&ctrl->mbox_lock);
	tag = alloc_mcc_tag(phba);
	if (!tag) {
		spin_unlock(&ctrl->mbox_lock);
		return tag;
	}

	nonemb_cmd->size = sizeof(*resp);
	req = nonemb_cmd->va;
	memset(req,