cpu/ixp/npe/IxEthDBUtil.c

   1 /**
   2  * @file ethUtil.c
   3  *
   4  * @brief Utility functions
   5  *
   6  * @par
   7  * IXP400 SW Release version 2.0
   8  *
   9  * -- Copyright Notice --
  10  *
  11  * @par
  12  * Copyright 2001-2005, Intel Corporation.
  13  * All rights reserved.
  14  *
  15  * @par
  16  * Redistribution and use in source and binary forms, with or without
  17  * modification, are permitted provided that the following conditions
  18  * are met:
  19  * 1. Redistributions of source code must retain the above copyright
  20  *    notice, this list of conditions and the following disclaimer.
  21  * 2. Redistributions in binary form must reproduce the above copyright
  22  *    notice, this list of conditions and the following disclaimer in the
  23  *    documentation and/or other materials provided with the distribution.
  24  * 3. Neither the name of the Intel Corporation nor the names of its contributors
  25  *    may be used to endorse or promote products derived from this software
  26  *    without specific prior written permission.
  27  *
  28  * @par
  29  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
  30  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  32  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
  33  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  34  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  35  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  37  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  38  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  39  * SUCH DAMAGE.
  40  *
  41  * @par
  42  * -- End of Copyright Notice --
  43  */
  44
  45
  46 #include "IxFeatureCtrl.h"
  47 #include "IxEthDB_p.h"
  48
  49 IX_ETH_DB_PUBLIC
  50 IxEthDBStatus ixEthDBSingleEthNpeCheck(IxEthDBPortId portID)
  51 {
  52     /* If not IXP42X A0 stepping, proceed to check for existence of coprocessors */
  53     if ((IX_FEATURE_CTRL_SILICON_TYPE_A0 !=
  54         (ixFeatureCtrlProductIdRead() & IX_FEATURE_CTRL_SILICON_STEPPING_MASK))
  55         || (IX_FEATURE_CTRL_DEVICE_TYPE_IXP42X != ixFeatureCtrlDeviceRead ()))
  56     {
  57         if ((portID == 0) &&
  58             (ixFeatureCtrlComponentCheck(IX_FEATURECTRL_ETH0) ==
  59              IX_FEATURE_CTRL_COMPONENT_DISABLED))
  60         {
  61             return IX_ETH_DB_FAIL;
  62         }
  63
  64         if ((portID == 1) &&
  65             (ixFeatureCtrlComponentCheck(IX_FEATURECTRL_ETH1) ==
  66              IX_FEATURE_CTRL_COMPONENT_DISABLED))
  67         {
  68             return IX_ETH_DB_FAIL;
  69         }
  70
  71         if ((portID == 2) &&
  72             (ixFeatureCtrlComponentCheck(IX_FEATURECTRL_NPEA_ETH) ==
  73              IX_FEATURE_CTRL_COMPONENT_DISABLED))
  74         {
  75             return IX_ETH_DB_FAIL;
  76         }
  77     }
  78
  79     return IX_ETH_DB_SUCCESS;
  80 }
  81
  82 IX_ETH_DB_PUBLIC
  83 BOOL ixEthDBCheckSingleBitValue(UINT32 value)
  84 {
  85 #if (CPU != SIMSPARCSOLARIS) && !defined (__wince)
  86     UINT32 shift;
  87
  88     /* use the count-leading-zeros XScale instruction */
  89     __asm__ ("clz %0, %1\n" : "=r" (shift) : "r" (value));
  90
  91     return ((value << shift) == 0x80000000UL);
  92
  93 #else
  94
  95     while (value != 0)
  96     {
  97         if (value == 1) return TRUE;
  98         else if ((value & 1) == 1) return FALSE;
  99
 100         value >>= 1;
 101     }
 102
 103     return FALSE;
 104
 105 #endif
 106 }
 107
 108 const char *mac2string(const unsigned char *mac)
 109 {
 110   static char str[19];
 111
 112   if (mac == NULL)
 113   {
 114     return NULL;
 115   }
 116
 117   sprintf(str, "%02X:%02X:%02X:%02X:%02X:%02X", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
 118
 119   return str;
 120 }