xref: /freebsd-10.0-release/sys/dev/isci/scil/scif_sas_internal_io_request.h

/*-
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 * The full GNU General Public License is included in this distribution
 * in the file called LICENSE.GPL.
 *
 * BSD LICENSE
 *
 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in
 *     the documentation and/or other materials provided with the
 *     distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * $FreeBSD$
 */
#ifndef _SCIF_SAS_INTERNAL_REQUEST_H_
#define _SCIF_SAS_INTERNAL_REQUEST_H_

/**
 * @file
 *
 * @brief This file contains the protected interface structures, constants,
 *        and methods for the SCIF_SAS_INTERNAL_REQUEST object.
 */

#ifdef __cplusplus
extern "C" {
#endif // __cplusplus


#include <dev/isci/scil/scif_io_request.h>
#include <dev/isci/scil/sci_base_request.h>
#include <dev/isci/scil/scif_sas_request.h>
#include <dev/isci/scil/scif_sas_io_request.h>
#include <dev/isci/scil/scif_sas_remote_device.h>
#include <dev/isci/scil/intel_sas.h>
#include <dev/isci/scil/sci_controller_constants.h>

struct SCIF_SAS_CONTROLLER;

/**
 * This constant dictates the maximum number of internal framework
 *  IO request objects.  These objects are used for internal SMP requests
 *  and for NCQ error handling.
 */
#define SCIF_SAS_MAX_INTERNAL_REQUEST_COUNT (SCI_MAX_DOMAINS*4)

/**
 * This constant dictates the minimum number of internal framework
 *  IO request objects when size-constrained.
 */
#define SCIF_SAS_MIN_INTERNAL_REQUEST_COUNT (SCI_MAX_DOMAINS)

/*
 * This constant indicates the timeout value of an internal IO request
 * in mili-seconds.
 */
#define SCIF_SAS_INTERNAL_REQUEST_TIMEOUT   3000

/**
 * @struct SCIF_SAS_INTERNAL_IO_REQUEST
 *
 * @brief The SCIF_SAS_INTERNAL_IO_REQUEST object represents the internal SAS
 *        IO request behavior for the framework component.
 */
typedef struct SCIF_SAS_INTERNAL_IO_REQUEST
{
   /**
    * The SCIF_SAS_IO_REQUEST is the parent object for the
    * SCIF_SAS_INTERNAL_IO_REQUEST object.
    */
   SCIF_SAS_IO_REQUEST_T  parent;

   /**
    * This field will be utilized only by internal IO to handle timeout
    * situation.
    */
   void * internal_io_timer;

}SCIF_SAS_INTERNAL_IO_REQUEST_T;


U32 scif_sas_internal_request_get_object_size(
   void
);

SCI_STATUS scif_sas_internal_io_request_construct_smp(
   struct SCIF_SAS_CONTROLLER  * fw_controller,
   SCIF_SAS_REMOTE_DEVICE_T    * fw_remote_device,
   void                        * internal_io_memory,
   U16                           io_tag,
   SMP_REQUEST_T               * smp_command
);

SCI_STATUS scif_sas_internal_io_request_construct_stp(
   SCIF_SAS_INTERNAL_IO_REQUEST_T * fw_io
);

void scif_sas_internal_io_request_timeout_handler(
   void * fw_io
);

void scif_sas_internal_io_request_complete(
   struct SCIF_SAS_CONTROLLER     * fw_controller,
   SCIF_SAS_INTERNAL_IO_REQUEST_T * fw_io,
   SCI_STATUS                       completion_status
);

void scif_sas_internal_io_request_destruct(
   struct SCIF_SAS_CONTROLLER     * fw_controller,
   SCIF_SAS_INTERNAL_IO_REQUEST_T * fw_internal_io
);

#ifdef __cplusplus
}
#endif // __cplusplus

#endif // _SCIF_SAS_IO_REQUEST_H_