FreeBSD/Linux Kernel Cross Reference
sys/dev/isci/scil/scu_unsolicited_frame.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
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     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     * General Public License for more details.
     *
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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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    /**
     * @file
     *
     * @brief This field defines the SCU format of an unsolicited frame (UF).  A
     *        UF is a frame received by the SCU for which there is no known
     *        corresponding task context (TC).
     */
    
    #ifndef _SCU_UNSOLICITED_FRAME_H_
    #define _SCU_UNSOLICITED_FRAME_H_
    
    #ifdef __cplusplus
    extern "C" {
    #endif // __cplusplus
    
    #include <dev/isci/scil/sci_types.h>
    
    /**
     * This constant defines the number of DWORDS found the unsolicited frame
     * header data member.
     */
    #define SCU_UNSOLICITED_FRAME_HEADER_DATA_DWORDS 15
    
    /**
     * @struct SCU_UNSOLICITED_FRAME_HEADER
     *
     * This structure delineates the format of an unsolicited frame header.
     * The first DWORD are UF attributes defined by the silicon architecture.
     * The data depicts actual header information received on the link.
     */
    typedef struct SCU_UNSOLICITED_FRAME_HEADER
    {
       /**
        * This field indicates if there is an Initiator Index Table entry with
        * which this header is associated.
        */
       U32 iit_exists : 1;
    
       /**
        * This field simply indicates the protocol type (i.e. SSP, STP, SMP).
        */
       U32 protocol_type : 3;
    
       /**
       * This field indicates if the frame is an address frame (IAF or OAF)
       * or if it is a information unit frame.
       */
      U32 is_address_frame : 1;
   
      /**
       * This field simply indicates the connection rate at which the frame
       * was received.
       */
      U32 connection_rate : 4;
   
      U32 reserved : 23;
   
      /**
       * This field represents the actual header data received on the link.
       */
      U32 data[SCU_UNSOLICITED_FRAME_HEADER_DATA_DWORDS];
   
   } SCU_UNSOLICITED_FRAME_HEADER_T;
   
   #ifdef __cplusplus
   }
   #endif // __cplusplus
   
   #endif // _SCU_UNSOLICITED_FRAME_H_

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