FreeBSD/Linux Kernel Cross Reference
sys/dev/isci/scil/scif_sas_request.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
      *
      * 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.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    /**
     * @file
     *
     * @brief This file contains the implementation of the SCIF_SAS_REQUEST
     *        object.  The SCIF_SAS_REQUEST object provides data and methods
     *        that are common to both IO requests and task management requests.
     */
    
    
    #include <dev/isci/scil/scic_controller.h>
    
    #include <dev/isci/scil/scif_sas_request.h>
    #include <dev/isci/scil/scif_sas_task_request.h>
    #include <dev/isci/scil/scif_sas_controller.h>
    #include <dev/isci/scil/scif_sas_domain.h>
    #include <dev/isci/scil/scif_sas_remote_device.h>
    
    #include <dev/isci/scil/scif_sas_logger.h>
    
    //******************************************************************************
    //* P R O T E C T E D   M E T H O D S
    //******************************************************************************
    
    /**
     * @brief This method constructs the SCIF_SAS_REQUEST object.
     *
     * @param[in] fw_request This parameter specifies the request object to
     *            be constructed.
     * @param[in] fw_device This parameter specifies the remote device object
     *            to which this request is destined.
     * @param[in] logger This parameter specifies the logger associated with
     *            this base request object.
     * @param[in] state_table This parameter specifies the table of state
     *            definitions to be utilized for the request state machine.
     *
     * @return none
     */
    void scif_sas_request_construct(
       SCIF_SAS_REQUEST_T       * fw_request,
       SCIF_SAS_REMOTE_DEVICE_T * fw_device,
       SCI_BASE_LOGGER_T        * logger,
       SCI_BASE_STATE_T         * state_table
   )
   {
      sci_base_request_construct(&fw_request->parent, logger, state_table);
   
      SCIF_LOG_TRACE((
         sci_base_object_get_logger(fw_request),
         SCIF_LOG_OBJECT_TASK_MANAGEMENT,
         "scif_sas_request_construct(0x%x, 0x%x, 0x%x, 0x%x) enter\n",
         fw_request, fw_device, logger, state_table
      ));
   
      fw_request->device                    = fw_device;
      fw_request->is_internal               = FALSE;
      fw_request->lun                       = 0;
      fw_request->terminate_requestor       = NULL;
      fw_request->protocol_complete_handler = NULL;
      fw_request->is_high_priority          = FALSE;
      fw_request->is_waiting_for_abort_task_set = FALSE;
   
      sci_fast_list_element_init(fw_request, &fw_request->list_element);
   }
   
   /**
    * @brief This method will request the SCI core to terminate the supplied
    *        request.
    *
    * @param[in] fw_request This parameter specifies the request to be terminated.
    * @param[in] core_request This parameter specifies the core request (IO or
    *            task) to be terminated.
    *
    * @return This method returns the status of the core termination operation.
    */
   SCI_STATUS scif_sas_request_terminate_start(
      SCIF_SAS_REQUEST_T      * fw_request,
      SCI_IO_REQUEST_HANDLE_T   core_request
   )
   {
      SCIF_LOG_TRACE((
         sci_base_object_get_logger(fw_request),
         SCIF_LOG_OBJECT_TASK_MANAGEMENT,
         "scif_sas_request_terminate_start(0x%x) enter\n",
         fw_request
      ));
   
      // Only increment the affected request count if this request is being
      // terminated at the behest of a task management request.
      if (fw_request->terminate_requestor != NULL)
         fw_request->terminate_requestor->affected_request_count++;
   
      return scic_controller_terminate_request(
                fw_request->device->domain->controller->core_object,
                fw_request->device->core_object,
                core_request
             );
   }
   
   /**
    * @brief This method will perform termination completion processing for
    *        the supplied request.  This includes updated the affected
    *        request count, if a task management request is what generated
    *        this termination.  Also, this method will attempt to transition
    *        to the READY OPERATIONAL state if this represents the last
    *        affected request.
    *
    * @param[in] fw_request This parameter specifies the request for which to
    *            perform termination completion processing.
    *
    * @return none
    */
   void scif_sas_request_terminate_complete(
      SCIF_SAS_REQUEST_T * fw_request
   )
   {
      SCIF_LOG_TRACE((
         sci_base_object_get_logger(fw_request),
         SCIF_LOG_OBJECT_TASK_MANAGEMENT,
         "scif_sas_request_terminate_complete(0x%x) enter\n",
         fw_request
      ));
   
      // For requests that were terminated due to a task management request,
      // check to see if the task management request has completed.
      if (fw_request->terminate_requestor != NULL)
         scif_sas_task_request_operation_complete(fw_request->terminate_requestor);
   }
   

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