FreeBSD/Linux Kernel Cross Reference
sys/dev/qat/qat_api/include/icp_buffer_desc.h

     /* SPDX-License-Identifier: BSD-3-Clause */
     /* Copyright(c) 2007-2022 Intel Corporation */
     /* $FreeBSD$ */
     /**
      *****************************************************************************
      * @file icp_buffer_desc.h
      *
      * @defgroup icp_BufferDesc Buffer descriptor for LAC
      *
     * @ingroup LacCommon
     *
     * @description
     *      This file contains details of the hardware buffer descriptors used to
     *      communicate with the QAT.
     *
     *****************************************************************************/
    #ifndef ICP_BUFFER_DESC_H
    #define ICP_BUFFER_DESC_H
    
    #include "cpa.h"
    
    typedef Cpa64U icp_qat_addr_width_t; // hi32 first, lo32 second
    
    // Alignement constraint of the buffer list.
    #define ICP_DESCRIPTOR_ALIGNMENT_BYTES 8
    
    /**
     *****************************************************************************
     * @ingroup icp_BufferDesc
     *      Buffer descriptors for FlatBuffers - used in communications with
     *      the QAT.
     *
     * @description
     *      A QAT friendly buffer descriptor.
     *      All buffer descriptor described in this structure are physcial
     *      and are 64 bit wide.
     *
     *      Updates in the CpaFlatBuffer should be also reflected in this
     *      structure
     *
     *****************************************************************************/
    typedef struct icp_flat_buffer_desc_s {
            Cpa32U dataLenInBytes;
            Cpa32U reserved;
            icp_qat_addr_width_t phyBuffer;
            /**< The client will allocate memory for this using API function calls
              *  and the access layer will fill it and the QAT will read it.
              */
    } icp_flat_buffer_desc_t;
    
    /**
     *****************************************************************************
     * @ingroup icp_BufferDesc
     *      Buffer descriptors for BuffersLists - used in communications with
     *      the QAT.
     *
     * @description
     *      A QAT friendly buffer descriptor.
     *      All buffer descriptor described in this structure are physcial
     *      and are 64 bit wide.
     *
     *      Updates in the CpaBufferList should be also reflected in this structure
     *
     *****************************************************************************/
    typedef struct icp_buffer_list_desc_s {
            Cpa64U resrvd;
            Cpa32U numBuffers;
            Cpa32U reserved;
            icp_flat_buffer_desc_t phyBuffers[];
            /**< Unbounded array of physical buffer pointers, these point to the
              *  FlatBufferDescs. The client will allocate memory for this using
              *  API function calls and the access layer will fill it and the QAT
              *  will read it.
              */
    } icp_buffer_list_desc_t;
    
    #endif /* ICP_BUFFER_DESC_H */

Cache object: dded54b415886cdaf0c15ce3b8fc4007