FreeBSD/Linux Kernel Cross Reference
sys/dev/isci/scil/scic_sds_remote_device.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,
     * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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     * (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 _SCIC_SDS_REMOTE_DEVICE_H_
    #define _SCIC_SDS_REMOTE_DEVICE_H_
    
    /**
     * @file
     *
     * @brief This file contains the structures, constants, and prototypes for the
     *        SCIC_SDS_REMOTE_DEVICE object.
     */
    
    #ifdef __cplusplus
    extern "C" {
    #endif // __cplusplus
    
    #include <dev/isci/scil/intel_sas.h>
    #include <dev/isci/scil/sci_base_remote_device.h>
    #include <dev/isci/scil/sci_base_request.h>
    #include <dev/isci/scil/sci_base_state_machine_logger.h>
    #include <dev/isci/scil/scu_remote_node_context.h>
    #include <dev/isci/scil/scic_sds_remote_node_context.h>
    
    struct SCIC_SDS_CONTROLLER;
    struct SCIC_SDS_PORT;
    struct SCIC_SDS_REQUEST;
    struct SCIC_SDS_REMOTE_DEVICE_STATE_HANDLER;
    
    /**
     * @enum SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATES
     *
     * This is the enumeration of the ready substates for the
     * SCIC_SDS_REMOTE_DEVICE.
     */
    enum SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATES
    {
       /**
        * This is the initial state for the remote device ready substate.
        */
       SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_INITIAL,
    
       /**
        * This is the ready operational substate for the remote device.  This is the
        * normal operational state for a remote device.
        */
       SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_OPERATIONAL,
   
      /**
       * This is the suspended state for the remote device.  This is the state that
       * the device is placed in when a RNC suspend is received by the SCU hardware.
       */
      SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_SUSPENDED,
   
      /**
       * This is the final state that the device is placed in before a change to the
       * base state machine.
       */
      SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_FINAL,
   
      SCIC_SDS_SSP_REMOTE_DEVICE_READY_MAX_SUBSTATES
   };
   
   /**
    * @enum SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATES
    *
    * This is the enumeration for the SCIC_SDS_REMOTE_DEVICE ready substates for
    * the STP remote device.
    */
   enum SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATES
   {
      /**
       * This is the idle substate for the stp remote device.  When there are no
       * active IO for the device it is in this state.
       */
      SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE,
   
      /**
       * This is the command state for the STP remote device.  This state is
       * entered when the device is processing a non-NCQ command.  The device object
       * will fail any new start IO requests until this command is complete.
       */
      SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD,
   
      /**
       * This is the NCQ state for the STP remote device.  This state is entered
       * when the device is processing an NCQ request.  It will remain in this state
       * so long as there is one or more NCQ requests being processed.
       */
      SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ,
   
      /**
       * This is the NCQ error state for the STP remote device.  This state is
       * entered when an SDB error FIS is received by the device object while in the
       * NCQ state.  The device object will only accept a READ LOG command while in
       * this state.
       */
      SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR,
   
   #if !defined(DISABLE_ATAPI)
      /**
       * This is the ATAPI error state for the STP ATAPI remote device.  This state is
       * entered when ATAPI device sends error status FIS without data while the device
       * object is in CMD state. A suspension event is expected in this state. The device
       * object will resume right away.
       */
      SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_ATAPI_ERROR,
   #endif
   
      /**
       * This is the READY substate indicates the device is waiting for the RESET task
       * coming to be recovered from certain hardware specific error.
       */
      SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET,
   
      SCIC_SDS_STP_REMOTE_DEVICE_READY_MAX_SUBSTATES
   };
   
   
   /**
    * @enum SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATES
    *
    * This is the enumeration of the ready substates for the SMP REMOTE DEVICE.
    */
   
   enum SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATES
   {
      /**
       * This is the ready operational substate for the remote device.  This is the
       * normal operational state for a remote device.
       */
      SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE,
   
      /**
       * This is the suspended state for the remote device.  This is the state that
       * the device is placed in when a RNC suspend is received by the SCU hardware.
       */
      SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD,
   
      SCIC_SDS_SMP_REMOTE_DEVICE_READY_MAX_SUBSTATES
   };
   
   
   
   
   /**
    * @struct SCIC_SDS_REMOTE_DEVICE
    *
    * @brief  This structure contains the data for an SCU implementation of
    *         the SCU Core device data.
    */
   typedef struct SCIC_SDS_REMOTE_DEVICE
   {
      /**
       * This field is the common base for all remote device objects.
       */
      SCI_BASE_REMOTE_DEVICE_T parent;
   
      /**
       * This field is the programmed device port width.  This value is written to
       * the RCN data structure to tell the SCU how many open connections this
       * device can have.
       */
      U32 device_port_width;
   
      /**
       * This field is the programmed connection rate for this remote device.  It is
       * used to program the TC with the maximum allowed connection rate.
       */
      SCI_SAS_LINK_RATE connection_rate;
   
      /**
       * This field contains the allowed target protocols for this remote device.
       */
      SMP_DISCOVER_RESPONSE_PROTOCOLS_T target_protocols;
   
      /**
       * This field contains the device SAS address.
       */
      SCI_SAS_ADDRESS_T device_address;
   
      /**
       * This filed is assigned the value of TRUE if the device is directly attached
       * to the port.
       */
      BOOL is_direct_attached;
   
   #if !defined(DISABLE_ATAPI)
      /**
       * This filed is assigned the value of TRUE if the device is an ATAPI device.
       */
      BOOL is_atapi;
   #endif
   
      /**
       * This filed contains a pointer back to the port to which this device is
       * assigned.
       */
      struct SCIC_SDS_PORT *owning_port;
   
      /**
       * This field contains the SCU silicon remote node context specific
       * information.
       */
      struct SCIC_SDS_REMOTE_NODE_CONTEXT * rnc;
   
      /**
       * This field contains the stated request count for the remote device.  The
       * device can not reach the SCI_BASE_REMOTE_DEVICE_STATE_STOPPED until all
       * requests are complete and the rnc_posted value is FALSE.
       */
      U32 started_request_count;
   
      /**
       * This field contains a pointer to the working request object.  It is only
       * used only for SATA requests since the unsolicited frames we get from the
       * hardware have no Tag value to look up the io request object.
       */
      struct SCIC_SDS_REQUEST * working_request;
   
      /**
       * This field contains the reason for the remote device going not_ready.  It is
       * assigned in the state handlers and used in the state transition.
       */
      U32 not_ready_reason;
   
      /**
       * This field is TRUE if this remote device has an initialized ready substate
       * machine. SSP devices do not have a ready substate machine and STP devices
       * have a ready substate machine.
       */
      BOOL has_ready_substate_machine;
   
      /**
       * This field contains the state machine for the ready substate machine for
       * this SCIC_SDS_REMOTE_DEVICE object.
       */
      SCI_BASE_STATE_MACHINE_T ready_substate_machine;
   
      /**
       * This field maintains the set of state handlers for the remote device
       * object.  These are changed each time the remote device enters a new state.
       */
      struct SCIC_SDS_REMOTE_DEVICE_STATE_HANDLER *state_handlers;
   
      #ifdef SCI_LOGGING
      /**
       * This field conatins the ready substate machine logger.  The logger will
       * emit a message each time the ready substate machine changes state.
       */
      SCI_BASE_STATE_MACHINE_LOGGER_T ready_substate_machine_logger;
      #endif
   
   } SCIC_SDS_REMOTE_DEVICE_T;
   
   
   typedef SCI_STATUS (*SCIC_SDS_REMOTE_DEVICE_HANDLER_T)(
                                    SCIC_SDS_REMOTE_DEVICE_T *this_device);
   
   typedef SCI_STATUS (*SCIC_SDS_REMOTE_DEVICE_SUSPEND_HANDLER_T)(
                                    SCIC_SDS_REMOTE_DEVICE_T *this_device,
                                    U32                       suspend_type);
   
   typedef SCI_STATUS (*SCIC_SDS_REMOTE_DEVICE_RESUME_HANDLER_T)(
                                    SCIC_SDS_REMOTE_DEVICE_T *this_device);
   
   typedef SCI_STATUS (*SCIC_SDS_REMOTE_DEVICE_FRAME_HANDLER_T)(
                                     SCIC_SDS_REMOTE_DEVICE_T *this_device,
                                     U32                       frame_index);
   
   typedef SCI_STATUS (*SCIC_SDS_REMOTE_DEVICE_EVENT_HANDLER_T)(
                                     SCIC_SDS_REMOTE_DEVICE_T *this_device,
                                     U32                       event_code);
   
   typedef void (*SCIC_SDS_REMOTE_DEVICE_READY_NOT_READY_HANDLER_T)(
                                     SCIC_SDS_REMOTE_DEVICE_T *this_device);
   
   /**
    * @struct SCIC_SDS_REMOTE_DEVICE_STATE_HANDLER
    * @brief This structure conains the state handlers that are needed to
    *        process requests for the SCU remote device objects.
    */
   typedef struct SCIC_SDS_REMOTE_DEVICE_STATE_HANDLER
   {
      SCI_BASE_REMOTE_DEVICE_STATE_HANDLER_T parent;
   
      SCIC_SDS_REMOTE_DEVICE_SUSPEND_HANDLER_T suspend_handler;
      SCIC_SDS_REMOTE_DEVICE_RESUME_HANDLER_T  resume_handler;
   
      SCIC_SDS_REMOTE_DEVICE_EVENT_HANDLER_T event_handler;
      SCIC_SDS_REMOTE_DEVICE_FRAME_HANDLER_T frame_handler;
   
   } SCIC_SDS_REMOTE_DEVICE_STATE_HANDLER_T;
   
   
   extern SCI_BASE_STATE_T scic_sds_remote_device_state_table[];
   extern SCI_BASE_STATE_T scic_sds_ssp_remote_device_ready_substate_table[];
   extern SCI_BASE_STATE_T scic_sds_stp_remote_device_ready_substate_table[];
   extern SCI_BASE_STATE_T scic_sds_smp_remote_device_ready_substate_table[];
   
   extern SCIC_SDS_REMOTE_DEVICE_STATE_HANDLER_T
                  scic_sds_remote_device_state_handler_table[];
   extern SCIC_SDS_REMOTE_DEVICE_STATE_HANDLER_T
                  scic_sds_ssp_remote_device_ready_substate_handler_table[];
   extern SCIC_SDS_REMOTE_DEVICE_STATE_HANDLER_T
                  scic_sds_stp_remote_device_ready_substate_handler_table[];
   extern SCIC_SDS_REMOTE_DEVICE_STATE_HANDLER_T
                  scic_sds_smp_remote_device_ready_substate_handler_table[];
   
   /**
    * This macro incrments the request count for this device
    */
   #define scic_sds_remote_device_increment_request_count(this_device) \
      ((this_device)->started_request_count++)
   
   /**
    * This macro decrements the request count for this device.  This count
    * will never decrment past 0.
    */
   #define scic_sds_remote_device_decrement_request_count(this_device) \
      ((this_device)->started_request_count > 0 ? \
         (this_device)->started_request_count-- : 0)
   
   /**
    * This is a helper macro to return the current device request count.
    */
   #define scic_sds_remote_device_get_request_count(this_device) \
      ((this_device)->started_request_count)
   
   /**
    * This macro returns the owning port of this remote device obejct.
    */
   #define scic_sds_remote_device_get_port(this_device) \
      ((this_device)->owning_port)
   
   /**
    * This macro returns the controller object that contains this device
    * object
    */
   #define scic_sds_remote_device_get_controller(this_device) \
      scic_sds_port_get_controller(scic_sds_remote_device_get_port(this_device))
   
   /**
    * This macro sets the remote device state handlers pointer and is set on
    * entry to each device state.
    */
   #define scic_sds_remote_device_set_state_handlers(this_device, handlers) \
      ((this_device)->state_handlers = (handlers))
   
   /**
    * This macro returns the base sate machine object for the remote device.
    */
   #define scic_sds_remote_device_get_base_state_machine(this_device) \
      (&(this_device)->parent.state_machine)
   
   /**
    * This macro returns the remote device ready substate machine
    */
   #define scic_sds_remote_device_get_ready_substate_machine(this_device) \
      (&(this_device)->ready_substate_machine)
   
   /**
    * This macro returns the owning port of this device
    */
   #define scic_sds_remote_device_get_port(this_device) \
      ((this_device)->owning_port)
   
   /**
    * This macro returns the remote device sequence value
    */
   #define scic_sds_remote_device_get_sequence(this_device) \
      ( \
         scic_sds_remote_device_get_controller(this_device)->\
            remote_device_sequence[(this_device)->rnc->remote_node_index] \
      )
   
   /**
    * This macro returns the controllers protocol engine group
    */
   #define scic_sds_remote_device_get_controller_peg(this_device) \
      ( \
         scic_sds_controller_get_protocol_engine_group( \
            scic_sds_port_get_controller( \
               scic_sds_remote_device_get_port(this_device) \
            ) \
         ) \
      )
   
   /**
    * This macro returns the port index for the devices owning port
    */
   #define scic_sds_remote_device_get_port_index(this_device) \
      (scic_sds_port_get_index(scic_sds_remote_device_get_port(this_device)))
   
   /**
    * This macro returns the remote node index for this device object
    */
   #define scic_sds_remote_device_get_index(this_device) \
      ((this_device)->rnc->remote_node_index)
   
   /**
    * This macro builds a remote device context for the SCU post request
    * operation
    */
   #define scic_sds_remote_device_build_command_context(device, command) \
      (   (command) \
        | ((U32)(scic_sds_remote_device_get_controller_peg((device))) << SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT)\
        | ((U32)(scic_sds_remote_device_get_port_index((device))) << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) \
        | (scic_sds_remote_device_get_index((device))) \
      )
   
   /**
    * This macro makes the working request assingment for the remote device
    * object. To clear the working request use this macro with a NULL request
    * object.
    */
   #define scic_sds_remote_device_set_working_request(device, request) \
      ((device)->working_request = (request))
   
   // ---------------------------------------------------------------------------
   
   U32 scic_sds_remote_device_get_min_timer_count(void);
   
   U32 scic_sds_remote_device_get_max_timer_count(void);
   
   SCI_STATUS scic_sds_remote_device_frame_handler(
      SCIC_SDS_REMOTE_DEVICE_T *this_device,
      U32                       frame_index
   );
   
   SCI_STATUS scic_sds_remote_device_event_handler(
      SCIC_SDS_REMOTE_DEVICE_T *this_device,
      U32                       event_code
   );
   
   SCI_STATUS scic_sds_remote_device_start_io(
      struct SCIC_SDS_CONTROLLER *controller,
      SCIC_SDS_REMOTE_DEVICE_T   *this_device,
      struct SCIC_SDS_REQUEST    *io_request
   );
   
   SCI_STATUS scic_sds_remote_device_complete_io(
      struct SCIC_SDS_CONTROLLER *controller,
      SCIC_SDS_REMOTE_DEVICE_T   *this_device,
      struct SCIC_SDS_REQUEST    *io_request
   );
   
   SCI_STATUS scic_sds_remote_device_resume(
      SCIC_SDS_REMOTE_DEVICE_T *this_device
   );
   
   SCI_STATUS scic_sds_remote_device_suspend(
      SCIC_SDS_REMOTE_DEVICE_T *this_device,
      U32                       suspend_type
   );
   
   SCI_STATUS scic_sds_remote_device_start_task(
      struct SCIC_SDS_CONTROLLER  *controller,
      SCIC_SDS_REMOTE_DEVICE_T    *this_device,
      struct SCIC_SDS_REQUEST     *io_request
   );
   
   void scic_sds_remote_device_post_request(
      SCIC_SDS_REMOTE_DEVICE_T * this_device,
      U32                        request
   );
   
   #if !defined(DISABLE_ATAPI)
   BOOL scic_sds_remote_device_is_atapi(
      SCIC_SDS_REMOTE_DEVICE_T    *this_device
   );
   #else // !defined(DISABLE_ATAPI)
   #define scic_sds_remote_device_is_atapi(this_device) FALSE
   #endif // !defined(DISABLE_ATAPI)
   
   // ---------------------------------------------------------------------------
   
   #ifdef SCI_LOGGING
   void scic_sds_remote_device_initialize_state_logging(
      SCIC_SDS_REMOTE_DEVICE_T *this_device
   );
   
   void scic_sds_remote_device_deinitialize_state_logging(
      SCIC_SDS_REMOTE_DEVICE_T *this_device
   );
   #else // SCI_LOGGING
   #define scic_sds_remote_device_initialize_state_logging(x)
   #define scic_sds_remote_device_deinitialize_state_logging(x)
   #endif // SCI_LOGGING
   
   // ---------------------------------------------------------------------------
   
   void scic_sds_remote_device_start_request(
      SCIC_SDS_REMOTE_DEVICE_T * this_device,
      struct SCIC_SDS_REQUEST  * the_request,
      SCI_STATUS                 status
   );
   
   void scic_sds_remote_device_continue_request(
      SCIC_SDS_REMOTE_DEVICE_T * this_device
   );
   
   SCI_STATUS scic_sds_remote_device_default_start_handler(
      SCI_BASE_REMOTE_DEVICE_T *this_device
   );
   
   SCI_STATUS scic_sds_remote_device_default_stop_handler(
      SCI_BASE_REMOTE_DEVICE_T *this_device
   );
   
   SCI_STATUS scic_sds_remote_device_default_fail_handler(
      SCI_BASE_REMOTE_DEVICE_T *this_device
   );
   
   SCI_STATUS scic_sds_remote_device_default_destruct_handler(
      SCI_BASE_REMOTE_DEVICE_T *this_device
   );
   
   SCI_STATUS scic_sds_remote_device_default_reset_handler(
      SCI_BASE_REMOTE_DEVICE_T *device
   );
   
   SCI_STATUS scic_sds_remote_device_default_reset_complete_handler(
      SCI_BASE_REMOTE_DEVICE_T *device
   );
   
   SCI_STATUS scic_sds_remote_device_default_start_request_handler(
      SCI_BASE_REMOTE_DEVICE_T *device,
      SCI_BASE_REQUEST_T       *request
   );
   
   SCI_STATUS scic_sds_remote_device_default_complete_request_handler(
      SCI_BASE_REMOTE_DEVICE_T *device,
      SCI_BASE_REQUEST_T       *request
   );
   
   SCI_STATUS scic_sds_remote_device_default_continue_request_handler(
      SCI_BASE_REMOTE_DEVICE_T *device,
      SCI_BASE_REQUEST_T       *request
   );
   
   SCI_STATUS scic_sds_remote_device_default_suspend_handler(
      SCIC_SDS_REMOTE_DEVICE_T *this_device,
      U32                       suspend_type
   );
   
   SCI_STATUS scic_sds_remote_device_default_resume_handler(
      SCIC_SDS_REMOTE_DEVICE_T *this_device
   );
   
   SCI_STATUS  scic_sds_remote_device_default_event_handler(
      SCIC_SDS_REMOTE_DEVICE_T *this_device,
      U32                       event_code
   );
   
   SCI_STATUS scic_sds_remote_device_default_frame_handler(
      SCIC_SDS_REMOTE_DEVICE_T *this_device,
      U32                       frame_index
   );
   
   // ---------------------------------------------------------------------------
   
   SCI_STATUS scic_sds_remote_device_ready_state_stop_handler(
      SCI_BASE_REMOTE_DEVICE_T *device
   );
   
   SCI_STATUS scic_sds_remote_device_ready_state_reset_handler(
      SCI_BASE_REMOTE_DEVICE_T *device
   );
   
   SCI_STATUS scic_sds_remote_device_general_frame_handler(
      SCIC_SDS_REMOTE_DEVICE_T *this_device,
      U32                       frame_index
   );
   
   SCI_STATUS scic_sds_remote_device_general_event_handler(
      SCIC_SDS_REMOTE_DEVICE_T *this_device,
      U32                       event_code
   );
   
   SCI_STATUS scic_sds_ssp_remote_device_ready_suspended_substate_resume_handler(
      SCIC_SDS_REMOTE_DEVICE_T *this_device
   );
   
   // ---------------------------------------------------------------------------
   
   void scic_sds_remote_device_get_info_from_smp_discover_response(
      SCIC_SDS_REMOTE_DEVICE_T    * this_device,
      SMP_RESPONSE_DISCOVER_T     * discover_response
   );
   
   #ifdef __cplusplus
   }
   #endif // __cplusplus
   
   #endif // _SCIC_SDS_REMOTE_DEVICE_H_

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