FreeBSD/Linux Kernel Cross Reference
sys/dev/isci/scil/sci_base_port.h

     /*-
      * 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,
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     * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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     *
     * $FreeBSD$
     */
    #ifndef _SCI_BASE_PORT_H_
    #define _SCI_BASE_PORT_H_
    
    /**
     * @file
     *
     * @brief This file contains all of the structures, constants, and methods
     *        common to all port object definitions.
     */
    
    #ifdef __cplusplus
    extern "C" {
    #endif // __cplusplus
    
    #include <dev/isci/scil/sci_base_object.h>
    #include <dev/isci/scil/sci_base_logger.h>
    #include <dev/isci/scil/sci_base_state_machine.h>
    #include <dev/isci/scil/sci_base_state_machine_logger.h>
    
    /**
     * @enum SCI_BASE_PORT_STATES
     *
     * @brief This enumeration depicts all the states for the common port
     *        state machine.
     */
    typedef enum _SCI_BASE_PORT_STATES
    {
       /**
        * This state indicates that the port has successfully been stopped.
        * In this state no new IO operations are permitted.
        * This state is entered from the STOPPING state.
        */
       SCI_BASE_PORT_STATE_STOPPED,
    
       /**
        * This state indicates that the port is in the process of stopping.
        * In this state no new IO operations are permitted, but existing IO
        * operations are allowed to complete.
        * This state is entered from the READY state.
        */
       SCI_BASE_PORT_STATE_STOPPING,
    
       /**
        * This state indicates the port is now ready.  Thus, the user is
       * able to perform IO operations on this port.
       * This state is entered from the STARTING state.
       */
      SCI_BASE_PORT_STATE_READY,
   
      /**
       * This state indicates the port is in the process of performing a hard
       * reset.  Thus, the user is unable to perform IO operations on this
       * port.
       * This state is entered from the READY state.
       */
      SCI_BASE_PORT_STATE_RESETTING,
   
      /**
       * This state indicates the port has failed a reset request.  This state
       * is entered when a port reset request times out.
       * This state is entered from the RESETTING state.
       */
      SCI_BASE_PORT_STATE_FAILED,
   
      SCI_BASE_PORT_MAX_STATES
   
   } SCI_BASE_PORT_STATES;
   
   /**
    * @struct SCI_BASE_PORT
    *
    * @brief The base port object abstracts the fields common to all SCI
    *        port objects.
    */
   typedef struct SCI_BASE_PORT
   {
      /**
       * The field specifies that the parent object for the base controller
       * is the base object itself.
       */
      SCI_BASE_OBJECT_T parent;
   
      /**
       * This field contains the information for the base port state machine.
       */
      SCI_BASE_STATE_MACHINE_T state_machine;
   
      #ifdef SCI_LOGGING
      SCI_BASE_STATE_MACHINE_LOGGER_T state_machine_logger;
      #endif // SCI_LOGGING
   
   } SCI_BASE_PORT_T;
   
   struct SCI_BASE_PHY;
   
   typedef SCI_STATUS (*SCI_BASE_PORT_HANDLER_T)(
      SCI_BASE_PORT_T *
   );
   
   typedef SCI_STATUS (*SCI_BASE_PORT_PHY_HANDLER_T)(
      SCI_BASE_PORT_T *,
      struct SCI_BASE_PHY *
   );
   
   typedef SCI_STATUS (*SCI_BASE_PORT_RESET_HANDLER_T)(
      SCI_BASE_PORT_T *,
      U32 timeout
   );
   
   /**
    * @struct SCI_BASE_PORT_STATE_HANDLER
    *
    * @brief This structure contains all of the state handler methods common to
    *        base port state machines.  Handler methods provide the ability
    *        to change the behavior for user requests or transitions depending
    *        on the state the machine is in.
    */
   typedef struct SCI_BASE_PORT_STATE_HANDLER
   {
      /**
       * The start_handler specifies the method invoked when a user attempts to
       * start a port.
       */
      SCI_BASE_PORT_HANDLER_T start_handler;
   
      /**
       * The stop_handler specifies the method invoked when a user attempts to
       * stop a port.
       */
      SCI_BASE_PORT_HANDLER_T stop_handler;
   
      /**
       * The destruct_handler specifies the method invoked when attempting to
       * destruct a port.
       */
      SCI_BASE_PORT_HANDLER_T destruct_handler;
   
      /**
       * The reset_handler specifies the method invoked when a user attempts to
       * hard reset a port.
       */
      SCI_BASE_PORT_RESET_HANDLER_T reset_handler;
   
      /**
       * The add_phy_handler specifies the method invoked when a user attempts to
       * add another phy into the port.
       */
      SCI_BASE_PORT_PHY_HANDLER_T add_phy_handler;
   
      /**
       * The remove_phy_handler specifies the method invoked when a user
       * attempts to remove a phy from the port.
       */
      SCI_BASE_PORT_PHY_HANDLER_T remove_phy_handler;
   
   } SCI_BASE_PORT_STATE_HANDLER_T;
   
   /**
    * @brief Construct the base port object
    *
    * @param[in] this_port This parameter specifies the base port to be
    *            constructed.
    * @param[in] logger This parameter specifies the logger to be associated
    *            with this base port object.
    * @param[in] state_table This parameter specifies the table of state
    *            definitions to be utilized for the domain state machine.
    *
    * @return none
    */
   void sci_base_port_construct(
      SCI_BASE_PORT_T   * this_port,
      SCI_BASE_LOGGER_T * logger,
      SCI_BASE_STATE_T  * state_table
   );
   
   #ifdef __cplusplus
   }
   #endif // __cplusplus
   
   #endif // _SCI_BASE_PORT_H_

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