FreeBSD/Linux Kernel Cross Reference
sys/dev/pms/RefTisa/sallsdk/spc/saframe.c

     /*******************************************************************************
     *Copyright (c) 2014 PMC-Sierra, Inc.  All rights reserved. 
     *
     *Redistribution and use in source and binary forms, with or without modification, are permitted provided 
     *that the following conditions are met: 
     *1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
     *following disclaimer. 
     *2. 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 AUTHOR 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 AUTHOR 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
    
    ********************************************************************************/
    /*******************************************************************************/
    /*! \file saframe.c
     *  \brief The file implements the functions to read frame content
     */
    
    
    /******************************************************************************/
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    #include <dev/pms/config.h>
    
    #include <dev/pms/RefTisa/sallsdk/spc/saglobal.h>
    #ifdef SA_ENABLE_TRACE_FUNCTIONS
    #ifdef siTraceFileID
    #undef siTraceFileID
    #endif
    #define siTraceFileID 'D'
    #endif
    
    /******************************************************************************/
    /*! \brief Read 32 bits from a frame
     *
     *  Read 32 bits from a frame
     *
     *  \param agRoot       Handles for this instance of SAS/SATA LLL
     *  \param agFrame      The frame handler
     *  \param frameOffset  Offset in bytes from the beginning of valid frame bytes or IU
                            to the 32-bit value to read
     *
     *  \return The read value
     *
     */
    /*******************************************************************************/
    GLOBAL bit32 saFrameReadBit32(
      agsaRoot_t          *agRoot,
      agsaFrameHandle_t   agFrame,
      bit32               frameOffset
      )
    {
      bit8                    *payloadAddr;
      bit32                   value = 0;
    
      smTraceFuncEnter(hpDBG_VERY_LOUD, "zr");
    
      if ( agNULL != agFrame )
      {
        /* Find the address of the payload */
        payloadAddr = (bit8 *)(agFrame) + frameOffset;
    
        /* read one DW Data */
        value = *(bit32 *)payloadAddr;
      }
    
    
      /* (5) return value */
      smTraceFuncExit(hpDBG_VERY_LOUD, 'a', "zr");
      return value;
    }
    
    /******************************************************************************/
    /*! \brief Read a block from a frame
     *
     *  Read a block from a frame
     *
     *  \param agRoot         Handles for this instance of SAS/SATA LLL
     *  \param agFrame        The frame handler
     *  \param frameOffset    The offset of the frame to start read
     *  \param frameBuffer    The pointer to the destination of data read from the frame
     *  \param frameBufLen    Number of bytes to read from the frame
     *
     *  \return -void-
     *
     */
    /*******************************************************************************/
    GLOBAL void saFrameReadBlock (
      agsaRoot_t          *agRoot,
      agsaFrameHandle_t   agFrame,
      bit32               frameOffset,
     void                *frameBuffer,
     bit32               frameBufLen
     )
   {
     bit8                    *payloadAddr;
     bit32                   i;
   
     smTraceFuncEnter(hpDBG_VERY_LOUD, "zi");
   
     /* Sanity check */
     SA_ASSERT(frameBufLen < 4096, "saFrameReadBlock read more than 4k");
   
     if ( agNULL != agFrame )
     {
       /* Find the address of the payload */
       payloadAddr = (bit8 *)(agFrame) + frameOffset;
       /* Copy the frame data to the destination frame buffer */
       for ( i = 0; i < frameBufLen; i ++ )
       {
         *(bit8 *)((bit8 *)frameBuffer + i) = *(bit8 *)(payloadAddr + i);
       }
     }
   
     smTraceFuncExit(hpDBG_VERY_LOUD, 'a', "zi");
   }
   

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