--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/g23m-aci/bat/bat_adp.c	Fri Oct 16 06:25:50 2020 +0000
@@ -0,0 +1,231 @@
+/* 
++-----------------------------------------------------------------------------
+|  Project :
+|  Modul   :  BAT
++-----------------------------------------------------------------------------
+|  Copyright 2005 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 :  This Modul holds the functions used by GDD
+|             for the binary AT command library 
++-----------------------------------------------------------------------------
+*/
+
+#define _BAT_ADP_C_
+
+#include "typedefs.h"
+#include "gdd.h"
+#include "l2p_types.h"
+#include "l2p.h"
+#include "bat.h"
+#include "bat_ctrl.h"
+#include "bat_intern.h"
+
+
+/*
++----------------------------------------------------------------------------+
+| PROJECT :                    MODULE  : BINARY AT COMMAND LIBRARY           |
+| STATE   : code               ROUTINE : bat_gdd_receive_data_cb             |
++----------------------------------------------------------------------------+
+PURPOSE :
+  This function is called by GDD when itself received new data from PSI.
+  It will pass a GDD buffer (linked list), which has the following speciality:
+   - the first list element is reserved and BAT Lib has to follow the next pointer
+     to see the "first" user data.
+   - such a user data element is passed by BAT Lib to L2P. L2P added at the sender
+     side its own header, which maintains possibly fragmentation. If the received
+     data have been fragmented by L2P at the sender side, then L2P itself iterates 
+     over the GDD linked list by calling bat_l2p_get_next_buf_seg() here at receiver side. 
+     When L2P has reassembled from several segments/list element the complete user data, 
+     then it passes this complete data to BAT Lib.
+   - BUT THERE IS AN ADDITIONAL SCENARIO:
+     ACI was not able to send the data to PSI/GDD. Then ACI also builds up a linked list
+     until it is able to send to PSI/GDD.
+     Every list element represents one response/indication, which itself could be fragmented by L2P.
+     Assume the following scenario:
+       The connection between ACI and PSI was not available.
+       ACI received three indications from the protocol stack, where the second one is too large so that
+       L2P must split it into two segments. That means that ACI has built a linked list of four
+       elements, which represents three logical data unit. The first list element belongs to the
+       first indication, the second and third list element belongs to the second indication
+       and the fourth list element belongs to the third indication.
+*/
+
+GDD_RESULT bat_gdd_receive_data_cb (T_GDD_CON_HANDLE con, T_GDD_BUF *buf)
+{
+  T_BAT_instance inst_hndl = BAT_BROADCAST_CHANNEL;
+  T_BAT_instance_maintain *inst_mt = NULL;
+
+  BAT_TRACE_FUNCTION ("bat_gdd_receive_data_cb()");
+  BAT_TRACE_EVENT_P2 ("data received from GDD has length: %d, has c_segment %d", buf->length, buf->c_segment);
+
+  /* if the info is for an unknown instance, return OK, GDD can only handle ok and busy, 
+   so in error cases, GDD_OK will be returned */
+  if (bat_get_instance_from_gdd_handle(con, &inst_hndl, &inst_mt))
+  {
+    /* if instance is unknown, BAT Lib ignores the data and returns OK to GDD  */
+    BAT_TRACE_ERROR("bat_gdd_receive_data_cb(): Data from unknown instance received!");
+    return (GDD_OK);
+  }
+
+  /* if the instance is not initialized */
+  if (inst_mt->instance_state EQ BAT_INSTANCE_IDLE)
+  {
+    /* if instance is not initialized, BAT Lib ignores the data and returns OK to GDD  */
+    BAT_TRACE_ERROR ("bat_gdd_receive_data_cb(): Data is received from GDD for an uninitialized instance.");
+    return (GDD_OK);
+  }
+
+  /* check if the receiver buffer is free, if not return a busy signal to GDD, BAT Lib will
+     send a ready signal to GDD when the buffer is freed (BAT Lib will receive ctrl info from)
+     app, see bat_ctrl() */
+  if (inst_mt->buffer.buf_st EQ BAT_BUF_FILLED)
+  {
+    BAT_TRACE_EVENT ("bat_gdd_receive_data_cb(): receive buffer is not yet freed!");
+    return (GDD_BUSY);  
+  }
+
+  bat_l2p_receive(inst_hndl, buf);
+    
+  return (GDD_OK);
+}
+
+
+LOCAL void bat_check_clients_for_busy (T_BAT_instance_maintain *instance, T_BAT_instance inst_hndl)
+{
+  T_BAT_client_maintain *clnt_mt   = NULL;
+  T_BAT_client           clnt_hndl = BAT_INVALID_CLIENT_HANDLE;
+  int i;
+  
+  for (i = 0; i < instance->max_client_num; i++)
+  {
+    clnt_hndl = MAKE_CLNT_HNDL(i, inst_hndl);
+    bat_get_client_from_client_handle(clnt_hndl, &clnt_mt);
+    switch (clnt_mt->client_state)
+    {
+      case (BAT_CLIENT_BUSY):
+      {
+        clnt_mt->signal_cb (clnt_hndl, BAT_READY_RESOURCE);
+        bat_change_client_state(clnt_mt, BAT_CLIENT_READY);
+        break;
+      }
+      case (BAT_CLIENT_SENDING_AND_BUSY):
+      {
+        clnt_mt->signal_cb (clnt_hndl, BAT_READY_RESOURCE);
+        bat_change_client_state(clnt_mt, BAT_CLIENT_SENDING);
+        break;
+      }
+      default:
+        break;              
+    }
+  }
+}
+
+/*
++----------------------------------------------------------------------------+
+| PROJECT :                    MODULE  : BINARY AT COMMAND LIBRARY           |
+| STATE   : code               ROUTINE : bat_gdd_signal_cb                   |
++----------------------------------------------------------------------------+
+PURPOSE :
+  This function is called by GDD for signalling of control information between
+  BAT Lib and GDD.
+  
+*/
+void bat_gdd_signal_cb(T_GDD_CON_HANDLE con, T_GDD_SIGNAL signal)
+{
+  T_BAT_instance_maintain *instance = NULL;
+  T_BAT_instance inst_hndl = BAT_INVALID_INSTANCE_HANDLE;
+  T_BATC_signal ctrl_data;
+  T_BATC_max_clients max_clnt;
+  
+  BAT_TRACE_FUNCTION ("bat_gdd_signal_cb()");
+  BAT_TRACE_EVENT_P1 ("bat_gdd_signal_cb(): con_hndl searched for is %x", con);
+  
+  if (bat_get_instance_from_gdd_handle(con, &inst_hndl, &instance))
+  {
+    BAT_TRACE_ERROR ("bat_gdd_signal_cb(): gdd handle is not found, ignore signal");
+    return;
+  }
+
+  switch (signal.sig)
+  {
+    case (GDD_SIGTYPE_CONNECTION_OPENED):    
+    case (GDD_SIGTYPE_SEND_BUF_AVAILABLE):
+    {
+      BAT_TRACE_EVENT ("bat_gdd_signal_cb(): GDD_SIGTYPE_SEND_BUF_AVAILABLE received from GDD");
+      
+      switch (instance->instance_state)
+      {
+        case (BAT_INSTANCE_IDLE):
+        {
+          /* update the instance state */
+          bat_change_instance_state(instance, BAT_INSTANCE_ACTIVATING);
+
+          /* BAT sends out the control info to ACI*/
+          ctrl_data.ctrl_params = BATC_MAX_CLIENTS;
+          max_clnt.num_clients = instance->max_client_num;
+          ctrl_data.params.ptr_max_clients = &max_clnt;
+  
+          if (bat_send_ctrl_data(inst_hndl, &ctrl_data) NEQ BAT_OK)
+          {
+            BAT_TRACE_ERROR ("bat_gdd_signal_cb(): BAT new fails to send ctrl info, connection can not be open");
+
+            if (instance->config->adapter.gdd_if.gdd_disconnect(con))
+            {
+              BAT_TRACE_ERROR ("bat_gdd_signal_cb(): GDD returns error when disconnecting.");
+            }
+            instance->instance_signal_cb(BAT_NEW_INSTANCE_FAIL);
+            bat_deinit_instance_pointer(inst_hndl);
+          }
+          break;
+        }  
+        /* flow control for client channels, GDD state has be changed from BUSY to READY */      
+        case (BAT_INSTANCE_READY):
+        {
+          bat_check_clients_for_busy(instance, inst_hndl);
+          break; 
+        }
+        /* flow control for instance, bat_open() hasn't been succesful yet */
+        case (BAT_INSTANCE_BUSY):
+        {
+          instance->instance_signal_cb (BAT_READY_RESOURCE);
+          bat_change_instance_state(instance, BAT_INSTANCE_READY);
+          break;      
+        }
+        default:
+        {
+          return;
+        }
+      }
+      break;
+    }
+    case (GDD_SIGTYPE_CONNECTION_FAILED):
+    {
+      BAT_TRACE_ERROR("bat_gdd_signal_cb(): GDD_SIGTYPE_CONNECTION_OPENED_FAILED received from GDD");
+      if (instance->config->adapter.gdd_if.gdd_disconnect(con))
+      {
+        BAT_TRACE_ERROR ("bat_gdd_signal_cb(): GDD returns error when disconnecting.");
+      }
+      instance->instance_signal_cb (BAT_NEW_INSTANCE_FAIL);
+      bat_deinit_instance_pointer(inst_hndl);
+      L2P_Remove (inst_hndl);
+      break;
+    }
+    /* ignore other signal types */
+    default:
+    {
+      break;
+    }
+  }
+  return;
+}
+
+