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ulink_pack.c (2098B)

      1 /* 
      2  * 
      3  * This license is set out in https://raw.githubusercontent.com/Broadcom-Network-Switching-Software/OpenBCM/master/Legal/LICENSE file.
      4  * 
      5  * Copyright 2007-2019 Broadcom Inc. All rights reserved.
      6  *
      7  * File:        ulink_pack.c
      8  * Purpose:     ULINK pack and unpack routines for:
      9  *              - ukernel link module 
     10  *
     11  *
     12  * ULINK control messages
     13  *
     14  * ULINK messages between the Host CPU and uController are sent
     15  * using the uc_message module which allows short messages
     16  * to be passed (see include/soc/shared/mos_msg_common.h)
     17  *
     18  * Additional information for a given message (a long message) is passed
     19  * using DMA.  The ULINK control message types defines the format
     20  * for these long messages.
     21  *
     22  * This file is shared between SDK and uKernel.
     23  */
     24 
     25 #include <soc/defs.h>
     26 #include <shared/pack.h>
     27 #include <soc/shared/ulink_pack.h>
     28 
     29 /*********************************************************
     30  * ULINK port bitmap Pack/Unpack
     31  *
     32  * Functions:
     33  *      shr_ulink_pbm_pack/unpack
     34  * Purpose:
     35  *      The following set of routines pack/unpack link  
     36  *      bitmap to/from given buffer.
     37  * Parameters:
     38  *   _pack()
     39  *      buffer   - (OUT) Buffer where to pack bitmap.
     40  *      <header> - (IN)  bitmap to pack.
     41  *   _unpack()
     42  *      buffer   - (IN)  Buffer with data to unpack.
     43  *      <header> - (OUT) Returns unpack header.
     44  * Returns:
     45  *      Pointer to next position in buffer.
     46  * Notes:
     47  *      Assumes pointers are valid and contain enough memory space.
     48  */
     49 uint8 *
     50 shr_ulink_pbm_unpack(uint8 *bufp, soc_ulink_pbm_msg_t *msg)
     51 {
     52     int i, word_max;
     53 
     54     _SHR_UNPACK_U8(bufp, msg->flags);
     55     _SHR_UNPACK_U8(bufp, msg->words);
     56     word_max = (msg->words <= UL_PBMP_WORD_MAX) ? msg->words : UL_PBMP_WORD_MAX;
     57     
     58     for(i = 0; i < word_max; i++) {
     59         _SHR_UNPACK_U32(bufp,msg->pbits[i]);
     60     }
     61     return bufp;
     62 }
     63 
     64 uint8 *
     65 shr_ulink_pbm_pack(uint8 *bufp, soc_ulink_pbm_msg_t *msg)
     66 {
     67     int i;
     68     _SHR_PACK_U8(bufp, msg->flags);
     69     _SHR_PACK_U8(bufp, msg->words);
     70     for(i = 0; i < msg->words; i++) {
     71         _SHR_PACK_U32(bufp,msg->pbits[i]);
     72     }
     73     return bufp;
     74 }
     75