FreeBSD/Linux Kernel Cross Reference
sys/dev/isci/scil/sci_base_phy.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.
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     * 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
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     * 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.
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     * $FreeBSD$
     */
    #ifndef _SCI_BASE_PHY_H_
    #define _SCI_BASE_PHY_H_
    
    /**
     * @file
     *
     * @brief This file contains all of the structures, constants, and methods
     *        common to all phy object definitions.
     */
    
    #ifdef __cplusplus
    extern "C" {
    #endif // __cplusplus
    
    #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_PHY_STATES
     *
     * @brief This enumeration depicts the standard states common to all phy
     *        state machine implementations.
     */
    typedef enum _SCI_BASE_PHY_STATES
    {
       /**
        * Simply the initial state for the base domain state machine.
        */
       SCI_BASE_PHY_STATE_INITIAL,
    
       /**
        * This state indicates that the phy has successfully been stopped.
        * In this state no new IO operations are permitted on this phy.
        * This state is entered from the INITIAL state.
        * This state is entered from the STARTING state.
        * This state is entered from the READY state.
        * This state is entered from the RESETTING state.
        */
       SCI_BASE_PHY_STATE_STOPPED,
    
       /**
        * This state indicates that the phy is in the process of becoming
        * ready.  In this state no new IO operations are permitted on this phy.
       * This state is entered from the STOPPED state.
       * This state is entered from the READY state.
       * This state is entered from the RESETTING state.
       */
      SCI_BASE_PHY_STATE_STARTING,
   
      /**
       * This state indicates the phy is now ready.  Thus, the user
       * is able to perform IO operations utilizing this phy as long as it
       * is currently part of a valid port.
       * This state is entered from the STARTING state.
       */
      SCI_BASE_PHY_STATE_READY,
   
      /**
       * This state indicates that the phy is in the process of being reset.
       * In this state no new IO operations are permitted on this phy.
       * This state is entered from the READY state.
       */
      SCI_BASE_PHY_STATE_RESETTING,
   
      /**
       * Simply the final state for the base phy state machine.
       */
      SCI_BASE_PHY_STATE_FINAL,
   
      SCI_BASE_PHY_MAX_STATES
   
   } SCI_BASE_PHY_STATES;
   
   /**
    * @struct SCI_BASE_PHY
    *
    * @brief This structure defines all of the fields common to PHY objects.
    */
   typedef struct SCI_BASE_PHY
   {
      /**
       * This field depicts the parent object (SCI_BASE_OBJECT) for the phy.
       */
      SCI_BASE_OBJECT_T parent;
   
      /**
       * This field contains the information for the base phy 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_PHY_T;
   
   typedef SCI_STATUS (*SCI_BASE_PHY_HANDLER_T)(
      SCI_BASE_PHY_T *
   );
   
   /**
    * @struct SCI_BASE_PHY_STATE_HANDLER
    *
    * @brief This structure contains all of the state handler methods common to
    *        base phy 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_PHY_STATE_HANDLER
   {
      /**
       * The start_handler specifies the method invoked when there is an
       * attempt to start a phy.
       */
      SCI_BASE_PHY_HANDLER_T start_handler;
   
      /**
       * The stop_handler specifies the method invoked when there is an
       * attempt to stop a phy.
       */
      SCI_BASE_PHY_HANDLER_T stop_handler;
   
      /**
       * The reset_handler specifies the method invoked when there is an
       * attempt to reset a phy.
       */
      SCI_BASE_PHY_HANDLER_T reset_handler;
   
      /**
       * The destruct_handler specifies the method invoked when attempting to
       * destruct a phy.
       */
      SCI_BASE_PHY_HANDLER_T destruct_handler;
   
   } SCI_BASE_PHY_STATE_HANDLER_T;
   
   /**
    * @brief Construct the base phy
    *
    * @param[in] this_phy This parameter specifies the base phy to be
    *            constructed.
    * @param[in] logger This parameter specifies the logger associated with
    *            this base phy object.
    * @param[in] state_table This parameter specifies the table of state
    *            definitions to be utilized for the phy state machine.
    *
    * @return none
    */
   void sci_base_phy_construct(
      SCI_BASE_PHY_T    * this_phy,
      SCI_BASE_LOGGER_T * logger,
      SCI_BASE_STATE_T  * state_table
   );
   
   #ifdef __cplusplus
   }
   #endif // __cplusplus
   
   #endif // _SCI_BASE_PHY_H_

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