--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/g23m-aci/gdd_dio/gdd_dio_drv.c	Sun Jul 15 04:40:46 2018 +0000
@@ -0,0 +1,1320 @@
+/* 
++-----------------------------------------------------------------------------
+|  Project :
+|  Modul   :
++-----------------------------------------------------------------------------
+|  Copyright 2004 Texas Instruments Berlin, AG
+|                 All rights reserved.
+|
+|                 This file is confidential and a trade secret of Texas
+|                 Instruments Berlin, AG
+|                 The receipt of or possession of this file does not convey
+|                 any rights to reproduce or disclose its contents or to
+|                 manufacture, use, or sell anything it may describe, in
+|                 whole, or in part, without the specific written consent of
+|                 Texas Instruments Berlin, AG.
++-----------------------------------------------------------------------------
+|  Purpose :  DIOv4 GDD functional interfaces 
++-----------------------------------------------------------------------------
+*/
+
+#define GDD_DIO_DRV_C
+
+/*==== INCLUDES =============================================================*/
+
+#include <string.h>
+#include "typedefs.h"   /* to get Condat data types */
+#include "vsi.h"        /* to get a lot of macros */
+
+/* DIO stuff */
+#include "dio.h"
+#include "dio_il/dio_drv.h"
+
+/* GDD_DIO stuff */
+
+/* We must define P_DIO_H, in order to avoid inclusion of p_dio.h.
+   This is necessary due to the special fact, that "dio.h", which is included
+   in the header "dio_io/dio_drv.h", mirrors the header "p_dio.h". */
+#define P_DIO_H
+
+#include "gdd_dio.h"
+#include "gdd_dio_rxf.h"
+#include "gdd_dio_txf.h"
+#include "gdd_dio_queue.h"
+#include "gdd_dio_con_mgr.h"  /* for gdd_dio_con_mgr_mark_dead() */
+
+
+
+
+/*==== CONSTANTS ============================================================*/
+
+/*
+ * SEE_TRACE_DURING_SYS_INIT, if defined, allows the showing of traces during
+ * system initialization.  The definition should be removed for normal 
+ * operation.
+ * SEE_DIO_READ_WRITE_DATA, if defined, displays the data content of DIO_READ and
+ * DIO_WRITE.  The definition should be removed for normal operation.
+ */
+/* #define SEE_TRACE_DURING_SYS_INIT */
+/* #define SEE_DIO_READ_WRITE_DATA */
+
+/*==== DEFINITIONS ==========================================================*/
+
+#ifdef SEE_TRACE_DURING_SYS_INIT
+
+#ifdef TRACE_FUNCTION
+#undef TRACE_FUNCTION
+#define TRACE_FUNCTION  TRACE_ERROR
+#endif /* #ifdef TRACE_FUNCTION */
+
+#ifdef TRACE_EVENT
+#undef TRACE_EVENT
+#define TRACE_EVENT  TRACE_ERROR
+#endif /* #ifdef TRACE_EVENT */
+
+#endif /* #ifdef SEE_TRACE_DURING_SYS_INIT */
+
+
+#define IS_DRV_NUM_BAT(n)         (((n&DIO_DRV_MASK)==DIO_DRV_BAT)?TRUE:FALSE)
+#define IS_DRV_NUM_APP(n)         (((n&DIO_DRV_MASK)==DIO_DRV_APP)?TRUE:FALSE)
+#define IS_DIO_TYPE_PKT(n)        (((n&DIO_TYPE_MASK)==DIO_TYPE_PKT)?TRUE:FALSE)
+
+
+/* The following driver definitions should be removed as soon as the DIO IL
+   contains these definitiones */
+#ifndef DIO_DRV_TCP
+#define DIO_DRV_TCP      0x0A000000 /* driver number - TCP/IP adapter         */
+#endif /* DIO_DRV_TCP */
+#ifndef DIO_DRV_SOCK
+#define DIO_DRV_SOCK     0x0B000000 /* driver number - Socket adapter         */
+#endif /* DIO_DRV_SOCK */
+#ifndef DIO_DRV_SOCKCFG
+#define DIO_DRV_SOCKCFG  0x0C000000 /* driver number - Socket conf. adapter   */
+#endif /* DIO_DRV_SOCKCFG */
+
+
+
+/*==== TYPES ================================================================*/
+
+
+/*==== PROTOTYPES GDD DIO INTERFACE FUNCTIONS ================================*/
+
+void dio_user_ready_gdd(U32 device_range_start, U32 device_range_end,
+                        U16 drv_handle, T_DRV_CB_FUNC signal_callback);
+U16 dio_user_not_ready_gdd(U32 device_range_start, U32 device_range_end);
+void dio_exit_gdd(void);
+U16 dio_set_rx_buffer_gdd(U32 device, T_dio_buffer * buffer);
+U16 dio_read_gdd(U32 device, T_DIO_CTRL * control_info, T_dio_buffer **buffer);
+U16 dio_write_gdd(U32 device, T_DIO_CTRL * control_info, T_dio_buffer *buffer);
+U16 dio_get_tx_buffer_gdd(U32 device, T_dio_buffer ** buffer);
+U16 dio_clear_gdd(U32 device);
+U16 dio_flush_gdd(U32 device);
+U16 dio_get_capabilities_gdd(U32 device, T_DIO_CAP ** capabilities);
+U16 dio_set_config_gdd(U32 device, T_DIO_DCB * dcb);
+U16 dio_get_config_gdd(U32 device, T_DIO_DCB * dcb);
+U16 dio_close_device_gdd(U32 device);
+
+
+/*==== GLOBAL VARS ==========================================================*/
+
+/*==== LOCAL VARS ===========================================================*/
+
+
+static T_DIO_FUNC dio_func_bat =
+{ 
+                              dio_user_ready_gdd,
+                              dio_user_not_ready_gdd,
+                              dio_exit_gdd,
+                              dio_set_rx_buffer_gdd,
+                              dio_read_gdd,
+                              dio_write_gdd,
+                              dio_get_tx_buffer_gdd,
+                              dio_clear_gdd,
+                              dio_flush_gdd,
+                              dio_get_capabilities_gdd,
+                              dio_set_config_gdd,
+                              dio_get_config_gdd,
+  dio_close_device_gdd
+};
+
+
+                              
+/*==== LOCAL FUNCS ==========================================================*/
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : inst_num_from_dev_id
++------------------------------------------------------------------------------
+| Description : get instance number from  device id
+|
+| Parameters  : con_data    - connection data
+|
+| Return      : >= 0    - Success, instance ID
+                < 0     - Error (invalid device)
++------------------------------------------------------------------------------
+*/
+int inst_num_from_dev_id(U32 device)
+{
+  U32 drv_num = device & DIO_DRV_MASK;
+
+  switch (drv_num)
+  {
+  case DIO_DRV_BAT:
+    return GDD_INST_BAT;
+  case DIO_DRV_APP:
+    return GDD_INST_APP;
+  case DIO_DRV_TCP:
+    return GDD_INST_TCP;
+  case DIO_DRV_SOCK:
+    return GDD_INST_SOCK;
+  case DIO_DRV_SOCKCFG:
+    return GDD_INST_SOCKCFG;
+  default:
+    return -1;
+  }
+}
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : get_instance_data
++------------------------------------------------------------------------------
+| Description : Local helper function to get the instance data of a device
+|
+| Parameters  : gdd_dio_data    - pointer to pointer to gdd_dio_data instance
+|                                 (output parameter)
+|               device          - DIO device ID
+|
+| Return      : FALSE           - Success (gdd_dio_data has been set)
+|               TRUE            - Failed (invalid device)
++------------------------------------------------------------------------------
+*/
+U16 get_instance_data(T_GDD_DIO_DATA ** /*out*/ gdd_dio_data, U32 device)
+{
+  int inst = inst_num_from_dev_id(device);
+  if(inst >= 0)
+  {
+    *gdd_dio_data = &(gdd_dio_data_base[inst]);
+    return FALSE;
+  }
+  else
+  {
+    return TRUE;
+  }
+}
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : get_connection_data
++------------------------------------------------------------------------------
+| Description : Local helper function to map from DIO device ID to the
+|               connection data pointer.
+|
+| Parameters  : device          - DIO device ID
+|               gdd_dio_data    - pointer to pointer to gdd_dio_data instance
+|               con_data        - pointer to connection data (output parameter)
+|
+| Return      : FALSE           - Success
+|               TRUE            - Failed
++------------------------------------------------------------------------------
+*/
+U16 get_connection_data(U32 device, T_GDD_DIO_CON_DATA ** /*out*/ con_data)
+{
+  int i;
+  T_GDD_DIO_DATA *gdd_dio_data = 0;
+
+  if(get_instance_data(&gdd_dio_data, device))
+  {
+    TRACE_ERROR("[GDD] Bad DIO device number");
+    return DRV_INTERNAL_ERROR;
+  }
+
+  if (gdd_dio_data->ker.state NEQ GDD_DIO_KER_READY)
+  {
+    TRACE_ERROR("[GDD] State error: instance not ready");
+    return DRV_INTERNAL_ERROR;
+  }
+
+  for(i=0; i < gdd_dio_data->max_con; ++i)
+  {
+    if(gdd_dio_data->con_arr[i].dio_device EQ device)
+    {
+      *con_data = &(gdd_dio_data->con_arr[i]);
+      return DRV_OK;
+    }
+  }
+
+  TRACE_ERROR("[GDD] Cannot get connection info for this device");
+  return DRV_INTERNAL_ERROR;
+}
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : send_gdd_signal
++------------------------------------------------------------------------------
+| Description : Local helper function to send a GDD signal to a GDD client.
+|
+| Parameters  : con_data    - connection data
+|               sig_type    - type of signal to send
++------------------------------------------------------------------------------
+*/
+
+LOCAL void send_gdd_signal(T_GDD_DIO_CON_DATA * con_data, T_GDD_SIGTYPE sig_type)
+{
+  T_GDD_SIGNAL sig;
+  char * sig_type_str;
+  
+  switch (sig_type)
+  {
+  case GDD_SIGTYPE_CONNECTION_OPENED:  sig_type_str = "GDD_SIGTYPE_CONNECTION_OPENED"; break;
+  case GDD_SIGTYPE_SEND_BUF_AVAILABLE: sig_type_str = "GDD_SIGTYPE_SEND_BUF_AVAILABLE"; break;
+  case GDD_SIGTYPE_CONNECTION_FAILED:  sig_type_str = "GDD_SIGTYPE_CONNECTION_FAILED"; break;
+  case GDD_SIGTYPE_BUF_SENT:           sig_type_str = "GDD_SIGTYPE_BUF_SENT"; break;
+  default: sig_type_str = "ununsed signal type"; break;
+  }  
+  
+  TRACE_USER_CLASS_P2(TC_SIGNALS, "[GDD] Sending signal %s to GDD client (con_handle=0x%4x)",
+                      sig_type_str, con_data->dio_device);
+  
+  sig.sig = sig_type;
+  con_data->sig_cb(con_data->dio_device, sig);
+}
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : init_dio_driver_instance
++------------------------------------------------------------------------------
+| Description : Local helper initialize a dio driver instance
++------------------------------------------------------------------------------
+*/
+LOCAL void init_dio_driver_instance(T_GDD_DIO_DATA * gdd_dio_data, U16 max_devices)
+{
+  gdd_dio_data->max_con   = (U8) max_devices;
+  gdd_dio_data->ker.state = GDD_DIO_KER_INIT;
+}
+
+
+
+/*==== FUNCTIONS EXPORTED VIA dio_export() ==================================*/
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_user_ready_gdd
++------------------------------------------------------------------------------
+| Description : The function allows the driver to open the channels that have 
+|               channel numbers of the given range.  Each driver has its ready 
+|               function. The function is not called directly by the user of 
+|               the DIO interface. The DIO interface layer calls the ready 
+|               functions of the DIO driver when dio_user_init() is called.
+|               The driver uses the given signal_callback function for channel 
+|               of the given channel number range. The driver stores the 
+|               drv_handle and passes it in the T_DRV_SIGNAL structure of the 
+|               Signal parameter to the calling process every time the callback
+|               function is called.  This function needs to be provided by each
+|               DIO driver in order to enable more than one user using the DIO 
+|               interface.
+|
+| Parameters  : device_range_start  - First channel number of a range of 
+|                                     channels which can be handled by a DIO 
+|                                     user now
+|               device_range_end    -	Last channel number of a range of 
+|                                     channels which can be handled by a 
+|                                     DIO user now
+|               drv_handle          - Unique handle of the DIO user.
+|               signal_callback     - This parameter points to the function 
+|                                     that is called at the time an event 
+|                                     occurs that is to be signaled.
+|
+| Return      : none
+|
++------------------------------------------------------------------------------
+*/
+void dio_user_ready_gdd
+(
+  U32           device_range_start, 
+  U32           device_range_end, 
+  U16           drv_handle, 
+  T_DRV_CB_FUNC signal_callback
+)
+{
+  T_GDD_DIO_DATA *gdd_dio_data = 0;
+
+  TRACE_FUNCTION("[GDD] dio_user_ready_gdd()");
+
+  /* Only packet data is currently supported - this might change later */
+  if(IS_DIO_TYPE_PKT(device_range_start) EQ FALSE)
+  {
+    TRACE_ERROR("[GDD] Non-packet device not supported");
+    return;
+  }  
+
+  if(get_instance_data(&gdd_dio_data, device_range_start))
+  {
+    TRACE_ERROR("[GDD] Bad DIO device number");
+    return;
+  }
+
+  if (gdd_dio_data->ker.state NEQ GDD_DIO_KER_INIT)
+  {
+    TRACE_ERROR("[GDD] DIO driver not initialized");
+    return;
+  }
+
+  gdd_dio_data->inst_id            = (T_GDD_INST_ID)inst_num_from_dev_id(device_range_start);
+  gdd_dio_data->drv_num            = device_range_start & DIO_DRV_MASK;
+  gdd_dio_data->device_range_start = device_range_start;
+  gdd_dio_data->device_range_end   = device_range_end;
+  gdd_dio_data->drv_handle         = drv_handle;
+  gdd_dio_data->signal_callback    = signal_callback;
+
+  gdd_dio_data->ker.state = GDD_DIO_KER_READY;
+  
+} /* dio_user_ready_gdd */
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_user_not_ready_gdd
++------------------------------------------------------------------------------
+| Description : The function is used to clear the signal_callback/channel 
+|               association which was previously set with dio_user_ready_gdd().
+|               That means the signal_callback function of channels of the 
+|               given channel number range must not be call any more. All 
+|               channels of the given channel number range need to be closed 
+|               before the function can be called.  The function returns DRV_OK
+|               if it was able to clear the signal_callback/channel 
+|               associations successfully. In case there is no channel in the 
+|               given channel number range the function also returns DRV_OK.  
+|               If there is still an open channel in the given channel number 
+|               range then the function returns DRV_INVALID_PARAMS. In this 
+|               case the signal_callback function can still be used by the 
+|               driver.
+|
+| Parameters  : device_range_start  - First channel number of a range of 
+|                                     channels which can no longer be handled  
+|                                     by a DIO user now
+|               device_range_end    -	Last channel number of a range of 
+|                                     channels which can no longer be handled  
+|                                     by a DIO user now
+|
+| Return      : DRV_OK              - Initialization successful
+|               DRV_INVALID_PARAMS  - User operation can not be terminated yet
+|               DRV_INTERNAL_ERROR  - Internal driver error
+|
++------------------------------------------------------------------------------
+*/
+U16 dio_user_not_ready_gdd
+(
+  U32 device_range_start, 
+  U32 device_range_end
+)
+{
+  T_GDD_DIO_DATA *gdd_dio_data = 0;
+
+  TRACE_FUNCTION("[GDD] dio_user_not_ready_gdd()");
+
+  if(get_instance_data(&gdd_dio_data, device_range_start))
+  {
+    TRACE_ERROR("Bad DIO device number");
+    return DRV_INTERNAL_ERROR;
+  }
+
+  if (gdd_dio_data->ker.state NEQ GDD_DIO_KER_READY)
+  {
+    TRACE_ERROR("[GDD] State error: instance not ready");
+  }
+
+  gdd_dio_data->ker.state = GDD_DIO_KER_INIT;
+
+  return DRV_OK;
+} /* dio_user_not_ready_gdd */
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_exit_gdd
++------------------------------------------------------------------------------
+| Description : This function is called when this device driver is no longer 
+|               longer required.  DIO_IL calls this function after both send/
+|               receive buffers in the driver are flushed and all BAT devies 
+|               are closed.
+|
+| Parameters  : none
+|
+| Return      : none
+|
++------------------------------------------------------------------------------
+*/
+void dio_exit_gdd(void)
+{
+  int inst;
+
+  TRACE_FUNCTION("[GDD] dio_exit_gdd()");
+  
+  /* Shutdown all instances */
+  for(inst=0; inst<GDD_NUM_INSTS; ++inst)
+  {
+    gdd_dio_data_base[inst].ker.state = GDD_DIO_KER_DEAD;
+  }
+
+} /* dio_exit_gdd */
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_set_rx_buffer_gdd
++------------------------------------------------------------------------------
+| Description : This function provides a receive buffer to the driver. The 
+|               driver uses this buffer to store the received data of the 
+|               specified device. The function should always return immediately
+|               after overtaking the buffer, without waiting for data.  To 
+|               avoid reception gaps more than one receive buffer should be 
+|               provided to the driver via several calls of this function. 
+|               The provided buffers should be used in the order they were 
+|               provided.  If the driver is not able to take over the provided
+|               buffer (e.g. because its internal data buffer queue is full) 
+|               the function returns DRV_BUFFER_FULL.  The driver uses the 
+|               DRV_SIGTYPE_READ signal when data is received.
+|
+| Parameters  : device              - Data device number or DLC number
+|               buffer              -	Data buffer description
+|
+| Return      : DRV_OK              - Initialization successful
+|               DRV_BUFFER_FULL     - Buffer queue is full
+|               DRV_INVALID_PARAMS  - User operation can not be terminated yet
+|               DRV_INTERNAL_ERROR  - Internal driver error
+|               DRV_NOTCONFIGURED   - The device is not yet configured
+|
++------------------------------------------------------------------------------
+*/
+U16 dio_set_rx_buffer_gdd
+(
+  U32             device, 
+  T_dio_buffer *  buffer
+)
+{
+  T_GDD_DIO_CON_DATA *con_data = 0;
+  U16 pos = 0;
+
+  TRACE_USER_CLASS(TC_FUNC_DATA_FLOW, "[GDD] dio_set_rx_buffer_gdd()");
+
+  if(get_connection_data(device, &con_data) NEQ DRV_OK)
+  {
+    return DRV_INTERNAL_ERROR;
+  }
+
+  if(gdd_dio_enqueue(buffer, &con_data->rx_queue, &pos) EQ FALSE)
+  {
+    return DRV_BUFFER_FULL;
+  }
+  else
+  {
+    if(con_data->con_state == GDD_DIO_CON_CONNECT)
+    {
+      con_data->con_state = GDD_DIO_CON_READY;
+      
+      send_gdd_signal(con_data, GDD_SIGTYPE_CONNECTION_OPENED);
+    } 
+    if(con_data->wait_send_buf)
+    {
+      send_gdd_signal(con_data, GDD_SIGTYPE_SEND_BUF_AVAILABLE);
+      
+      con_data->wait_send_buf = FALSE;
+    }
+
+    return DRV_OK;
+  }
+} /* dio_set_rx_buffer_gdd */
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_read_gdd
++------------------------------------------------------------------------------
+| Description : This function returns a receive buffer and control information.
+|               It should always return immediately after changing internal 
+|               states, without waiting for any more data. The receive buffers
+|               should be returned in the same order as provided with the 
+|               dio_set_rx_buffer() calls (First-In-First-Out). The returned 
+|               buffer is not in control of the driver any more.  The buffer 
+|               should be returned even if it is empty. If there is no receive 
+|               buffer in control of the driver any more then buffer is set to 
+|               NULL. In this case only control information is delivered.
+|
+| Parameters  : device              - Data device number or DLC number
+|               control_info        - The driver copies control information
+|                                     into the provided control buffer
+|               buffer              -	Data buffer description
+|
+| Return      : DRV_OK              - Initialization successful
+|               DRV_INVALID_PARAMS  - User operation can not be terminated yet
+|               DRV_INTERNAL_ERROR  - Internal driver error
+|               DRV_NOTCONFIGURED   - The device is not yet configured
+|
++------------------------------------------------------------------------------
+*/
+U16 dio_read_gdd
+(
+  U32             device, 
+  T_DIO_CTRL *    control_info, 
+  T_dio_buffer ** buffer
+)
+{
+  T_GDD_DIO_CON_DATA *con_data = 0;
+
+  TRACE_USER_CLASS(TC_FUNC_DATA_FLOW, "[GDD] dio_read_gdd()");
+
+  if(get_connection_data(device, &con_data) NEQ DRV_OK)
+  {
+    return DRV_INTERNAL_ERROR;
+  }
+
+  /* Set control info : do nothing for now! */
+  
+  if(gdd_dio_dequeue(&(con_data->rx_queue), buffer) EQ FALSE)
+  {
+    TRACE_ERROR("[GDD] RX queue is empty");
+    
+    con_data->con_state = GDD_DIO_CON_READY;
+    return DRV_INTERNAL_ERROR;
+  }
+  else
+  {
+    send_gdd_signal(con_data, GDD_SIGTYPE_BUF_SENT);
+  }
+  
+  if(con_data->con_state NEQ GDD_DIO_CON_CLOSE)
+  {
+    con_data->con_state = GDD_DIO_CON_READY;
+  }
+
+  return DRV_OK;
+} /* dio_read_gdd */
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_write_gdd
++------------------------------------------------------------------------------
+| Description : This function provides a send buffer to the driver which 
+|               contains data to send. This function should return immediately
+|               after overtaking the buffer.  To avoid transmission gaps more 
+|               than one send buffer should be provided to the driver via 
+|               several calls of this function. The provided send buffers 
+|               should be sent in the order they were provided. If the driver 
+|               is not able to take over the provided buffer (e.g. because its
+|               internal buffer queue is full) the function returns 
+|               DRV_BUFFER_FULL.  If buffer is set to NULL then the driver only
+|               copies the provided control information.  The driver uses the 
+|               DRV_SIGTYPE_WRITE signal when the data of the buffer is sent.
+|
+| Parameters  : device              - Data device number or DLC number
+|               control_info        - The driver copies control information 
+|                                     into the provided control buffer
+|               buffer              -	Data buffer description
+|
+| Return      : DRV_OK              - Initialization successful
+|               DRV_BUFFER_FULL     - Buffer queue is full
+|               DRV_INVALID_PARAMS  - User operation can not be terminated yet
+|               DRV_INTERNAL_ERROR  - Internal driver error
+|               DRV_NOTCONFIGURED   - The device is not yet configured
+|
++------------------------------------------------------------------------------
+*/
+U16 dio_write_gdd
+(
+  U32             device, 
+  T_DIO_CTRL *    control_info, 
+  T_dio_buffer *  buf
+)
+{
+  T_GDD_DIO_CON_DATA *con_data = 0;
+  U16 pos = 0;
+
+  TRACE_USER_CLASS(TC_FUNC_DATA_FLOW, "[GDD] dio_write_gdd()");
+
+  if(get_connection_data(device, &con_data) NEQ DRV_OK)
+  {
+    return DRV_INTERNAL_ERROR;
+  }
+
+  /* Ignore control information for now */
+
+  if(gdd_dio_enqueue(buf, &con_data->tx_queue, &pos) EQ FALSE)
+  {
+    TRACE_ERROR("[GDD] TX buffer queue full");
+    return DRV_BUFFER_FULL;
+  }
+
+  gdd_dio_tx_receive_buf(con_data->dio_device, buf);
+
+  return DRV_OK;
+} /* dio_write_gdd */
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_get_tx_buffer_gdd
++------------------------------------------------------------------------------
+| Description : This function returns a send buffer provided via dio_write(). 
+|               It should always return immediately after changing internal 
+|               states, without waiting for any outstanding events. The send 
+|               buffers should be re-turned in the same order as provided with
+|               the dio_write() calls (First-In-First-Out). The returned send 
+|               buffer is not in control of the driver any more.  If there is 
+|               no send buffer in control of the driver any more then buffer is
+|               set to NULL.
+|
+| Parameters  : device              - Data device number or DLC number
+|               buffer              -	Data buffer description
+|
+| Return      : DRV_OK              - Initialization successful
+|               DRV_INVALID_PARAMS  - User operation can not be terminated yet
+|               DRV_INTERNAL_ERROR  - Internal driver error
+|               DRV_NOTCONFIGURED   - The device is not yet configured
+|
++------------------------------------------------------------------------------
+*/
+U16 dio_get_tx_buffer_gdd
+(
+  U32             device, 
+  T_dio_buffer ** buffer
+)
+{
+  T_GDD_DIO_CON_DATA *con_data = 0;
+
+  TRACE_USER_CLASS(TC_FUNC_DATA_FLOW, "[GDD] dio_get_tx_buffer_gdd()");
+
+  if(get_connection_data(device, &con_data) NEQ DRV_OK)
+  {
+    return DRV_INTERNAL_ERROR;
+  }
+
+  if(gdd_dio_dequeue(&con_data->tx_queue, buffer) EQ FALSE)
+  {
+    TRACE_ERROR("[GDD] TX buffer queue empty");
+    return DRV_INTERNAL_ERROR;
+  }
+
+  return DRV_OK;
+} /* dio_get_tx_buffer_gdd */
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_clear_gdd
++------------------------------------------------------------------------------
+| Description : Clear the hardware send buffer of the device.
+|               - currently not needed for GDD_DIO (BAT adapter).
+|
+| Parameters  : device              - Data device number or DLC number
+|
+| Return      : DRV_OK              - Initialization successful
+|               DRV_INVALID_PARAMS  - User operation can not be terminated yet
+|               DRV_INTERNAL_ERROR  - Internal driver error
+|               DRV_NOTCONFIGURED   - The device is not yet configured
+|               DRV_INPROCESS       - The driver is busy clearing the buffer
+|
++------------------------------------------------------------------------------
+*/
+U16 dio_clear_gdd
+(
+  U32   device
+)
+{
+
+  TRACE_FUNCTION("[GDD] dio_clear_gdd()");
+
+  /* Do nothing ! */
+
+  return DRV_OK;
+} /* dio_clear_gdd */
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_flush_gdd
++------------------------------------------------------------------------------
+| Description : Flush the hardware send buffer of the device.
+|               - currently not needed for GDD_DIO (BAT adapter).
+|
+| Parameters  : device              - Data device number or DLC number.
+|
+| Return      : DRV_OK              - Initialization successful
+|               DRV_INVALID_PARAMS  - User operation can not be terminated yet
+|               DRV_INTERNAL_ERROR  - Internal driver error
+|               DRV_NOTCONFIGURED   - The device is not yet configured
+|               DRV_INPROCESS       - The driver is busy clearing the buffer
+|
++------------------------------------------------------------------------------
+*/
+U16 dio_flush_gdd
+(
+  U32   device
+)
+{
+
+  TRACE_FUNCTION("[GDD] dio_flush_gdd()");
+
+  /* Do nothing ! */
+
+  return DRV_OK;
+} /* dio_flush_gdd */
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_get_capabilities_gdd
++------------------------------------------------------------------------------
+| Description : This function is used to retrieve the capabilities of a device.
+|               It is not allowed to change these values neither by the
+|               driver nor by the protocol stack.
+|
+| Parameters  : device              - Data device number or DLC number.
+|               capabilities        - Pointer to the device capabilities.
+|
+| Return      : DRV_OK              - Initialization successful
+|               DRV_INVALID_PARAMS  - User operation can not be terminated yet
+|               DRV_INTERNAL_ERROR  - Internal driver error
+|
++------------------------------------------------------------------------------
+*/
+U16 dio_get_capabilities_gdd
+(
+  U32                 device,
+  T_DIO_CAP **  capabilities
+)
+{
+  T_GDD_DIO_CON_DATA * con_data;
+
+  TRACE_FUNCTION("[GDD] dio_get_capabilities_gdd()");
+
+  if(get_connection_data(device, &con_data) NEQ DRV_OK)
+  {
+    return DRV_INTERNAL_ERROR;
+  }
+
+  if(inst_num_from_dev_id(device) < 0)
+  {
+    TRACE_ERROR("[GDD] Bad device");
+    send_gdd_signal(con_data, GDD_SIGTYPE_CONNECTION_FAILED);
+    return DRV_INTERNAL_ERROR;
+  }
+  
+  /* Only packet data is supported */
+  if(IS_DIO_TYPE_PKT(device))
+  {
+    *capabilities = (T_DIO_CAP *) & con_data->dio_cap;
+    return DRV_OK;
+  }
+  else
+  {
+    *capabilities = NULL;
+    send_gdd_signal(con_data, GDD_SIGTYPE_CONNECTION_FAILED);
+    return DRV_INVALID_PARAMS;
+  }  
+} /* dio_get_capability_gdd */
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_set_config_gdd
++------------------------------------------------------------------------------
+| Description : This function is used to configure a device (transmission rate,
+|               flow control, etc). A device can be configured at any time.  
+|               dcb points to a Device Control Block. The parameters that can 
+|               be configured are included in the Device Control Block.  If any
+|               value of the configuration is out of range, not supported or 
+|               invalid in combination with any other value of the 
+|               configuration, the function returns DRV_INVALID_PARAMS.  Each 
+|               device needs to be configured after the reception of a 
+|               DRV_SIGTYPE_CONNECT signal. Only dio_get_capabilities(), 
+|               dio_set_config() and dio_close_device() can be called while the
+|               device is not configured. All other device-specific functions 
+|               return DRV_NOTCONFIGURED.
+|
+| Parameters  : device              - Data device number or DLC number
+|               dcb                 - Pointer to a Device Control Block
+|
+| Return      : DRV_OK              - Initialization successful
+|               DRV_INVALID_PARAMS  - User operation can not be terminated yet
+|               DRV_INTERNAL_ERROR  - Internal driver error
+|
++------------------------------------------------------------------------------
+*/
+U16 dio_set_config_gdd
+(
+  U32         device,
+  T_DIO_DCB * dcb
+)
+{
+  T_GDD_DIO_CON_DATA * con_data;
+
+  TRACE_FUNCTION("[GDD] dio_set_config_gdd()");
+
+  if(get_connection_data(device, &con_data) NEQ DRV_OK)
+  {
+    return DRV_INTERNAL_ERROR;
+  }
+
+  if (dcb EQ NULL)
+  {
+    TRACE_ERROR("[GDD] dcb is NULL");
+    send_gdd_signal(con_data, GDD_SIGTYPE_CONNECTION_FAILED);
+    return DRV_INTERNAL_ERROR;
+  }
+
+  if (DIO_TYPE_PKT != dcb->device_type)
+  {
+    TRACE_ERROR("[GDD] bad dcb->device_type");
+    send_gdd_signal(con_data, GDD_SIGTYPE_CONNECTION_FAILED);
+    return DRV_INVALID_PARAMS;
+  }
+
+  /* Ignore dbc->sleep_mode. */
+
+  return DRV_OK;
+} /* dio_set_config_gdd */
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_get_config_gdd
++------------------------------------------------------------------------------
+| Description : This function is used to retrieve the configuration of a 
+|               device.  The driver copies the configuration into the Device 
+|               Control Block provided with dcb.
+|
+| Parameters  : device              - Data device number or DLC number
+|               dcb                 - Pointer to a Device Control Block
+|
+| Return      : DRV_OK              - Initialization successful
+|               DRV_INVALID_PARAMS  - User operation can not be terminated yet
+|               DRV_INTERNAL_ERROR  - Internal driver error
+|               DRV_NOTCONFIGURED   - The device is not yet configured
+|
++------------------------------------------------------------------------------
+*/
+U16 dio_get_config_gdd
+(
+  U32         device,
+  T_DIO_DCB * dcb
+)
+{
+  T_GDD_DIO_DATA * gdd_dio_data;
+
+  TRACE_FUNCTION("[GDD] dio_get_config_gdd()");
+
+  if(get_instance_data(&gdd_dio_data, device))
+  {
+    TRACE_ERROR("[GDD] Bad DIO device number");
+    return DRV_INTERNAL_ERROR;
+  }
+  
+  if (gdd_dio_data->ker.state NEQ GDD_DIO_KER_READY)
+  {
+    TRACE_ERROR("[GDD] State error: instance not ready");
+    return GDD_DIO_NOT_READY;
+  }
+
+  dcb->device_type = DIO_TYPE_PKT;
+  dcb->sleep_mode  = DIO_SLEEP_DISABLE;
+
+  return DRV_OK;
+} /* dio_get_config_gdd */
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_close_device_gdd
++------------------------------------------------------------------------------
+| Description : This function is used to close a device. The driver returns 
+|               DRV_OK if it was able to close the device successfully. In case
+|               the specified device does not exist the driver also returns 
+|               DRV_OK.  If the driver still controls a protocol stack buffer 
+|               for this device then it returns DRV_INVALID_PARAMS. In this 
+|               case the device is not closed. In order to get the remaining 
+|               buffers the protocol stack needs to call the functions 
+|               dio_read() and dio_get_tx_buffer().
+|
+| Parameters  : device              - Data device number or DLC number
+|
+| Return      : DRV_OK              - Initialization successful
+|               DRV_INVALID_PARAMS  - User operation can not be terminated yet
+|               DRV_INTERNAL_ERROR  - Internal driver error
+|
++------------------------------------------------------------------------------
+*/
+U16 dio_close_device_gdd
+(
+  U32   device
+)
+{
+  T_GDD_DIO_CON_DATA * con_data;
+
+  TRACE_FUNCTION("[GDD] dio_close_device_gdd()");
+
+  if(get_connection_data(device, &con_data) NEQ DRV_OK)
+  {
+    return DRV_INTERNAL_ERROR;
+  }
+
+  /* Inform client: in case the connection was closing,
+     we mark the connection as dead. If not, it means that the
+     connection (which was not yet established) has failed. */
+  if(con_data->con_state EQ GDD_DIO_CON_CLOSE)
+  {
+    gdd_dio_con_mgr_mark_dead(con_data->dio_device);
+  }
+  else
+  {
+    send_gdd_signal(con_data, GDD_SIGTYPE_CONNECTION_FAILED);
+  }
+  
+  return DRV_OK;
+} /* dio_close_device_bat */
+
+
+
+/*==== EXPORTED FUNCTIONS ===================================================*/
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_init_bat
++------------------------------------------------------------------------------
+| Description : The function initializes the BAT driver.  The 
+|               function returns DRV_INITIALIZED if the driver has already been
+|               initialized and is ready to be used or is already in use.  In 
+|               case of initialization failure (e.g. the configuration given 
+|               with drv_init can not be used) the function returns 
+|               DRV_INITFAILURE. In this case the driver can not be used.
+|
+| Parameters  : none
+|
+| Return      : DRV_OK          - Initialization successful
+|               DRV_INITIALIZED - Interface already initialized
+|               DRV_INITFAILURE - Initialization failed
+|
++------------------------------------------------------------------------------
+*/
+U16 dio_init_bat
+(
+  T_DIO_DRV * drv_init
+)
+{
+  T_GDD_DIO_DATA * gdd_dio_data = &gdd_dio_data_base[GDD_INST_BAT];
+
+  TRACE_FUNCTION("[GDD] dio_init_bat()");
+
+  if (gdd_dio_data->ker.state NEQ GDD_DIO_KER_DEAD)
+  {
+    TRACE_FUNCTION("Instance 'BAT' already initialized");
+    return DRV_INITIALIZED;
+  }
+
+  init_dio_driver_instance(gdd_dio_data, drv_init->max_devices);
+
+  return DRV_OK;
+} /* dio_init_bat */
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_export_bat
++------------------------------------------------------------------------------
+| Description : The function returns, through dio_func, a list of functions 
+|               that are exported by the BAT driver.  DIO_IL calls this
+|               function after dio_init_bat call return DRV_OK.
+|
+| Parameters  : dio_func        - Return as a pointer to the list of functions  
+|                                 exported by the driver.
+|
+| Return      : none
+|
++------------------------------------------------------------------------------
+*/
+void dio_export_bat
+(
+  T_DIO_FUNC ** dio_func
+)
+{ 
+  TRACE_FUNCTION("[GDD] dio_export_bat");
+
+  *dio_func = (T_DIO_FUNC*) &dio_func_bat;
+
+} /* dio_export_bat */
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_init_app
++------------------------------------------------------------------------------
+| Description : The function initializes the APP driver.  The 
+|               function returns DRV_INITIALIZED if the driver has already been
+|               initialized and is ready to be used or is already in use.  In 
+|               case of initialization failure (e.g. the configuration given 
+|               with drv_init can not be used) the function returns 
+|               DRV_INITFAILURE. In this case the driver can not be used.
+|
+| Parameters  : none
+|
+| Return      : DRV_OK          - Initialization successful
+|               DRV_INITIALIZED - Interface already initialized
+|               DRV_INITFAILURE - Initialization failed
+|
++------------------------------------------------------------------------------
+*/
+U16 dio_init_app
+(
+  T_DIO_DRV * drv_init
+)
+{
+  T_GDD_DIO_DATA * gdd_dio_data = &gdd_dio_data_base[GDD_INST_APP];
+
+  TRACE_FUNCTION("[GDD] dio_init_app()");
+
+  if (gdd_dio_data->ker.state NEQ GDD_DIO_KER_DEAD)
+  {
+    TRACE_FUNCTION("[GDD] Instance 'APP' already initialized");
+    return DRV_INITIALIZED;
+  }
+
+  init_dio_driver_instance(gdd_dio_data, drv_init->max_devices);
+
+  return DRV_OK;
+} /* dio_init_app */
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_export_app
++------------------------------------------------------------------------------
+| Description : The function returns, through dio_func, a list of functions 
+|               that are exported by the APP driver.  DIO_IL calls this
+|               function after dio_init_bat call return DRV_OK.
+|
+| Parameters  : dio_func        - Return as a pointer to the list of functions  
+|                                 exported by the driver.
+|
+| Return      : none
+|
++------------------------------------------------------------------------------
+*/
+void dio_export_app
+(
+  T_DIO_FUNC ** dio_func
+)
+{ 
+  TRACE_FUNCTION("[GDD] dio_export_app()");
+
+  *dio_func = (T_DIO_FUNC*) &dio_func_bat;
+
+} /* dio_export_app */
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_init_sock
++------------------------------------------------------------------------------
+| Description : The function initializes the TCP driver.  The 
+|               function returns DRV_INITIALIZED if the driver has already been
+|               initialized and is ready to be used or is already in use.  In 
+|               case of initialization failure (e.g. the configuration given 
+|               with drv_init can not be used) the function returns 
+|               DRV_INITFAILURE. In this case the driver can not be used.
+|
+| Parameters  : none
+|
+| Return      : DRV_OK          - Initialization successful
+|               DRV_INITIALIZED - Interface already initialized
+|               DRV_INITFAILURE - Initialization failed
+|
++------------------------------------------------------------------------------
+*/
+U16 dio_init_tcp
+(
+  T_DIO_DRV * drv_init
+)
+{
+  T_GDD_DIO_DATA * gdd_dio_data = &gdd_dio_data_base[GDD_INST_TCP];
+
+  TRACE_FUNCTION("[GDD] dio_init_tcp()");
+
+  if (gdd_dio_data->ker.state NEQ GDD_DIO_KER_DEAD)
+  {
+    TRACE_FUNCTION("[GDD] Instance 'TCP' already initialized");
+    return DRV_INITIALIZED;
+  }
+
+  init_dio_driver_instance(gdd_dio_data, drv_init->max_devices);
+
+  return DRV_OK;
+} /* dio_init_tcp */
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_export_tcp
++------------------------------------------------------------------------------
+| Description : The function returns, through dio_func, a list of functions 
+|               that are exported by the TCP driver.  DIO_IL calls this
+|               function after dio_init_bat call return DRV_OK.
+|
+| Parameters  : dio_func        - Return as a pointer to the list of functions  
+|                                 exported by the driver.
+|
+| Return      : none
+|
++------------------------------------------------------------------------------
+*/
+void dio_export_tcp
+(
+  T_DIO_FUNC ** dio_func
+)
+{ 
+  TRACE_FUNCTION("[GDD] dio_export_tcp()");
+
+  *dio_func = (T_DIO_FUNC*) &dio_func_bat;
+
+} /* dio_export_tcp */
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_init_sock
++------------------------------------------------------------------------------
+| Description : The function initializes the SOCK driver.  The 
+|               function returns DRV_INITIALIZED if the driver has already been
+|               initialized and is ready to be used or is already in use.  In 
+|               case of initialization failure (e.g. the configuration given 
+|               with drv_init can not be used) the function returns 
+|               DRV_INITFAILURE. In this case the driver can not be used.
+|
+| Parameters  : none
+|
+| Return      : DRV_OK          - Initialization successful
+|               DRV_INITIALIZED - Interface already initialized
+|               DRV_INITFAILURE - Initialization failed
+|
++------------------------------------------------------------------------------
+*/
+U16 dio_init_sock
+(
+  T_DIO_DRV * drv_init
+)
+{
+  T_GDD_DIO_DATA * gdd_dio_data = &gdd_dio_data_base[GDD_INST_SOCK];
+
+  TRACE_FUNCTION("[GDD] dio_init_sock()");
+
+  if (gdd_dio_data->ker.state NEQ GDD_DIO_KER_DEAD)
+  {
+    TRACE_FUNCTION("[GDD] Instance 'SOCK' already initialized");
+    return DRV_INITIALIZED;
+  }
+
+  init_dio_driver_instance(gdd_dio_data, drv_init->max_devices);
+
+  return DRV_OK;
+} /* dio_init_sock */
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_export_sock
++------------------------------------------------------------------------------
+| Description : The function returns, through dio_func, a list of functions 
+|               that are exported by the SOCK driver.  DIO_IL calls this
+|               function after dio_init_bat call return DRV_OK.
+|
+| Parameters  : dio_func        - Return as a pointer to the list of functions  
+|                                 exported by the driver.
+|
+| Return      : none
+|
++------------------------------------------------------------------------------
+*/
+void dio_export_sock
+(
+  T_DIO_FUNC ** dio_func
+)
+{ 
+  TRACE_FUNCTION("[GDD] dio_export_sock()");
+
+  *dio_func = (T_DIO_FUNC*) &dio_func_bat;
+
+} /* dio_export_sock */
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_init_sockcfg
++------------------------------------------------------------------------------
+| Description : The function initializes the SOCKCFG driver.  The 
+|               function returns DRV_INITIALIZED if the driver has already been
+|               initialized and is ready to be used or is already in use.  In 
+|               case of initialization failure (e.g. the configuration given 
+|               with drv_init can not be used) the function returns 
+|               DRV_INITFAILURE. In this case the driver can not be used.
+|
+| Parameters  : none
+|
+| Return      : DRV_OK          - Initialization successful
+|               DRV_INITIALIZED - Interface already initialized
+|               DRV_INITFAILURE - Initialization failed
+|
++------------------------------------------------------------------------------
+*/
+U16 dio_init_sockcfg
+(
+  T_DIO_DRV * drv_init
+)
+{
+  T_GDD_DIO_DATA * gdd_dio_data = &gdd_dio_data_base[GDD_INST_SOCKCFG];
+
+  TRACE_FUNCTION("[GDD] dio_init_sockcfg()");
+
+  if (gdd_dio_data->ker.state NEQ GDD_DIO_KER_DEAD)
+  {
+    TRACE_FUNCTION("[GDD] Instance 'SOCKCFG' already initialized");
+    return DRV_INITIALIZED;
+  }
+
+  init_dio_driver_instance(gdd_dio_data, drv_init->max_devices);
+
+  return DRV_OK;
+} /* dio_init_sockcfg */
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : dio_export_sockcfg
++------------------------------------------------------------------------------
+| Description : The function returns, through dio_func, a list of functions 
+|               that are exported by the SOCKCFG driver.  DIO_IL calls this
+|               function after dio_init_bat call return DRV_OK.
+|
+| Parameters  : dio_func        - Return as a pointer to the list of functions  
+|                                 exported by the driver.
+|
+| Return      : none
+|
++------------------------------------------------------------------------------
+*/
+void dio_export_sockcfg
+(
+  T_DIO_FUNC ** dio_func
+)
+{ 
+  TRACE_FUNCTION("[GDD] dio_export_sockcfg()");
+
+  *dio_func = (T_DIO_FUNC*) &dio_func_bat;
+
+} /* dio_export_sockcfg */
+
+
+
+#ifdef _SIMULATION_
+
+/* Set the signal callback for all GDD drivers - for simulation only !!! */
+GLOBAL void set_bat_driver_callback_for_simulation(T_DRV_CB_FUNC signal_callback)
+{
+  gdd_dio_data_base[GDD_INST_BAT].signal_callback = signal_callback;
+  gdd_dio_data_base[GDD_INST_APP].signal_callback = signal_callback;
+  gdd_dio_data_base[GDD_INST_TCP].signal_callback = signal_callback;
+  gdd_dio_data_base[GDD_INST_SOCK].signal_callback = signal_callback;
+  gdd_dio_data_base[GDD_INST_SOCKCFG].signal_callback = signal_callback;
+}
+
+#endif /* _SIMULATION_ */