drivers/staging/epl/edrv.h

   1 /****************************************************************************
   2
   3   (c) SYSTEC electronic GmbH, D-07973 Greiz, August-Bebel-Str. 29
   4       www.systec-electronic.com
   5
   6   Project:      openPOWERLINK
   7
   8   Description:  interface for ethernetdriver
   9
  10   License:
  11
  12     Redistribution and use in source and binary forms, with or without
  13     modification, are permitted provided that the following conditions
  14     are met:
  15
  16     1. Redistributions of source code must retain the above copyright
  17        notice, this list of conditions and the following disclaimer.
  18
  19     2. Redistributions in binary form must reproduce the above copyright
  20        notice, this list of conditions and the following disclaimer in the
  21        documentation and/or other materials provided with the distribution.
  22
  23     3. Neither the name of SYSTEC electronic GmbH nor the names of its
  24        contributors may be used to endorse or promote products derived
  25        from this software without prior written permission. For written
  26        permission, please contact info@systec-electronic.com.
  27
  28     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  29     "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  30     LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  31     FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  32     COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  33     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  34     BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  35     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  36     CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  37     LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  38     ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  39     POSSIBILITY OF SUCH DAMAGE.
  40
  41     Severability Clause:
  42
  43         If a provision of this License is or becomes illegal, invalid or
  44         unenforceable in any jurisdiction, that shall not affect:
  45         1. the validity or enforceability in that jurisdiction of any other
  46            provision of this License; or
  47         2. the validity or enforceability in other jurisdictions of that or
  48            any other provision of this License.
  49
  50   -------------------------------------------------------------------------
  51
  52                 $RCSfile: edrv.h,v $
  53
  54                 $Author: D.Krueger $
  55
  56                 $Revision: 1.6 $  $Date: 2008/04/17 21:36:32 $
  57
  58                 $State: Exp $
  59
  60                 Build Environment:
  61                 Dev C++ and GNU-Compiler for m68k
  62
  63   -------------------------------------------------------------------------
  64
  65   Revision History:
  66
  67   2005/08/01 m.b.:   start of implementation
  68
  69 ****************************************************************************/
  70
  71 #ifndef _EDRV_H_
  72 #define _EDRV_H_
  73
  74 #include "EplInc.h"
  75 #include "EplFrame.h"
  76
  77 //---------------------------------------------------------------------------
  78 // const defines
  79 //---------------------------------------------------------------------------
  80 // --------------------------------------------------------------------------
  81 #define MAX_ETH_DATA_SIZE       1500
  82 #define MIN_ETH_DATA_SIZE         46
  83
  84 #define ETH_HDR_OFFSET   0      // Ethernet header at the top of the frame
  85 #define ETH_HDR_SIZE    14      // size of Ethernet header
  86 #define MIN_ETH_SIZE     (MIN_ETH_DATA_SIZE + ETH_HDR_SIZE)     // without CRC
  87
  88 #define ETH_CRC_SIZE     4      // size of Ethernet CRC, i.e. FCS
  89
  90 //---------------------------------------------------------------------------
  91 // types
  92 //---------------------------------------------------------------------------
  93
  94 // position of a buffer in an ethernet-frame
  95 typedef enum {
  96         kEdrvBufferFirstInFrame = 0x01, // first data buffer in an ethernet frame
  97         kEdrvBufferMiddleInFrame = 0x02,        // a middle data buffer in an ethernet frame
  98         kEdrvBufferLastInFrame = 0x04   // last data buffer in an ethernet frame
  99 } tEdrvBufferInFrame;
 100
 101 // format of a tx-buffer
 102 typedef struct _tEdrvTxBuffer {
 103         tEplMsgType m_EplMsgType;       // IN: type of EPL message, set by calling function
 104         unsigned int m_uiTxMsgLen;      // IN: length of message to be send (set for each transmit call)
 105         // ----------------------
 106         unsigned int m_uiBufferNumber;  // OUT: number of the buffer, set by ethernetdriver
 107         u8 *m_pbBuffer; // OUT: pointer to the buffer, set by ethernetdriver
 108         tEplNetTime m_NetTime;  // OUT: Timestamp of end of transmission, set by ethernetdriver
 109         // ----------------------
 110         unsigned int m_uiMaxBufferLen;  // IN/OUT: maximum length of the buffer
 111 } tEdrvTxBuffer;
 112
 113 // format of a rx-buffer
 114 typedef struct _tEdrvRxBuffer {
 115         tEdrvBufferInFrame m_BufferInFrame;     // OUT position of received buffer in an ethernet-frame
 116         unsigned int m_uiRxMsgLen;      // OUT: length of received buffer (without CRC)
 117         u8 *m_pbBuffer; // OUT: pointer to the buffer, set by ethernetdriver
 118         tEplNetTime m_NetTime;  // OUT: Timestamp of end of receiption
 119
 120 } tEdrvRxBuffer;
 121
 122 //typedef void (*tEdrvRxHandler) (u8 bBufferInFrame_p, tBufferDescr * pbBuffer_p);
 123 //typedef void (*tEdrvRxHandler) (u8 bBufferInFrame_p, u8 * pbEthernetData_p, u16 wDataLen_p);
 124 typedef void (*tEdrvRxHandler) (tEdrvRxBuffer * pRxBuffer_p);
 125 typedef void (*tEdrvTxHandler) (tEdrvTxBuffer * pTxBuffer_p);
 126
 127 // format of init structure
 128 typedef struct {
 129         u8 m_abMyMacAddr[6];    // the own MAC address
 130
 131 //    u8            m_bNoOfRxBuffDescr;     // number of entries in rx bufferdescriptor table
 132 //    tBufferDescr *  m_pRxBuffDescrTable;    // rx bufferdescriptor table
 133 //    u16            m_wRxBufferSize;        // size of the whole rx buffer
 134
 135         tEdrvRxHandler m_pfnRxHandler;
 136         tEdrvTxHandler m_pfnTxHandler;
 137
 138 } tEdrvInitParam;
 139
 140 //---------------------------------------------------------------------------
 141 // function prototypes
 142 //---------------------------------------------------------------------------
 143
 144 tEplKernel EdrvInit(tEdrvInitParam * pEdrvInitParam_p);
 145
 146 tEplKernel EdrvShutdown(void);
 147
 148 tEplKernel EdrvDefineRxMacAddrEntry(u8 * pbMacAddr_p);
 149 tEplKernel EdrvUndefineRxMacAddrEntry(u8 * pbMacAddr_p);
 150
 151 //tEplKernel EdrvDefineUnicastEntry     (u8 * pbUCEntry_p);
 152 //tEplKernel EdrvUndfineUnicastEntry    (u8 * pbUCEntry_p);
 153
 154 tEplKernel EdrvAllocTxMsgBuffer(tEdrvTxBuffer * pBuffer_p);
 155 tEplKernel EdrvReleaseTxMsgBuffer(tEdrvTxBuffer * pBuffer_p);
 156
 157 //tEplKernel EdrvWriteMsg               (tBufferDescr * pbBuffer_p);
 158 tEplKernel EdrvSendTxMsg(tEdrvTxBuffer * pBuffer_p);
 159 tEplKernel EdrvTxMsgReady(tEdrvTxBuffer * pBuffer_p);
 160 tEplKernel EdrvTxMsgStart(tEdrvTxBuffer * pBuffer_p);
 161
 162 //tEplKernel EdrvReadMsg                (void);
 163
 164 // interrupt handler called by target specific interrupt handler
 165 void EdrvInterruptHandler(void);
 166
 167 #endif // #ifndef _EDRV_H_