diff gsm-fw/nucleus/iof.c @ 143:afceeeb2cba1

Our nuc-fw is destined to become gsm-fw, so I went ahead and did the big hg mv
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Tue, 12 Nov 2013 05:35:48 +0000
parents nuc-fw/nucleus/iof.c@947b1f473960
children
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gsm-fw/nucleus/iof.c	Tue Nov 12 05:35:48 2013 +0000
@@ -0,0 +1,240 @@
+/*************************************************************************/
+/*                                                                       */
+/*               Copyright Mentor Graphics Corporation 2002              */
+/*                         All Rights Reserved.                          */
+/*                                                                       */
+/* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS  */
+/* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS   */
+/* SUBJECT TO LICENSE TERMS.                                             */
+/*                                                                       */
+/*************************************************************************/
+
+/*************************************************************************/
+/*                                                                       */
+/* FILE NAME                                               VERSION       */
+/*                                                                       */
+/*      iof.c                                          Nucleus PLUS 1.14 */
+/*                                                                       */
+/* COMPONENT                                                             */
+/*                                                                       */
+/*      IO - Input/Output Driver Management                              */
+/*                                                                       */
+/* DESCRIPTION                                                           */
+/*                                                                       */
+/*      This file contains routines to obtain facts about the I/O Driver */
+/*      Management component.                                            */
+/*                                                                       */
+/* DATA STRUCTURES                                                       */
+/*                                                                       */
+/*      None                                                             */
+/*                                                                       */
+/* FUNCTIONS                                                             */
+/*                                                                       */
+/*      IOF_Established_Drivers             Return total number of I/O   */
+/*                                            drivers                    */
+/*      IOF_Driver_Pointers                 Return list of I/O driver    */
+/*                                            pointers                   */
+/*                                                                       */
+/* DEPENDENCIES                                                          */
+/*                                                                       */
+/*      cs_extr.h                           Common Service functions     */
+/*      tc_extr.h                           Thread Control functions     */
+/*      io_extr.h                           I/O driver functions         */
+/*      hi_extr.h                           History functions            */
+/*                                                                       */
+/* HISTORY                                                               */
+/*                                                                       */
+/*        DATE                    REMARKS                                */
+/*                                                                       */
+/*      03-01-1994      Initial version of I/O driver                    */
+/*                      fact service file, version 1.1                   */
+/*                                                                       */
+/*      03-18-1994      Verified version 1.1                             */
+/*      04-17-1996      updated to version 1.2                           */
+/*      03-24-1998      Released version 1.3                             */
+/*      03-26-1999      Released 1.11m (new release                      */
+/*                        numbering scheme)                              */
+/*      04-17-2002      Released version 1.13m                           */
+/*      11-07-2002      Released version 1.14                            */
+/*************************************************************************/
+#define         NU_SOURCE_FILE
+
+
+#include        "cs_extr.h"                 /* Common service functions  */
+#include        "tc_extr.h"                 /* Thread control functions  */
+#include        "io_extr.h"                 /* I/O driver functions      */
+#include        "hi_extr.h"                 /* History functions         */
+
+/* Define external inner-component global data references.  */
+
+extern CS_NODE         *IOD_Created_Drivers_List;
+extern UNSIGNED         IOD_Total_Drivers;
+extern TC_PROTECT       IOD_List_Protect;
+
+
+
+/*************************************************************************/
+/*                                                                       */
+/* FUNCTION                                                              */
+/*                                                                       */
+/*      IOF_Established_Drivers                                          */
+/*                                                                       */
+/* DESCRIPTION                                                           */
+/*                                                                       */
+/*      This function returns the current number of established I/O      */
+/*      drivers.  I/O drivers previously deleted are no longer           */
+/*      considered established.                                          */
+/*                                                                       */
+/* CALLED BY                                                             */
+/*                                                                       */
+/*      Application                                                      */
+/*                                                                       */
+/* CALLS                                                                 */
+/*                                                                       */
+/*      [TCT_Check_Stack]                   Stack checking function      */
+/*                                                                       */
+/* INPUTS                                                                */
+/*                                                                       */
+/*      None                                                             */
+/*                                                                       */
+/* OUTPUTS                                                               */
+/*                                                                       */
+/*      IOD_Total_Drivers                   Number of established I/O    */
+/*                                            drivers                    */
+/*                                                                       */
+/* HISTORY                                                               */
+/*                                                                       */
+/*        DATE                    REMARKS                                */
+/*                                                                       */
+/*      03-01-1993      Created initial version 1.0                      */
+/*      04-19-1993      Verified version 1.0                             */
+/*      03-01-1994      Changed function interface,                      */
+/*                      resulting in version 1.1                         */
+/*                                                                       */
+/*      03-18-1994      Verified version 1.1                             */
+/*                                                                       */
+/*************************************************************************/
+UNSIGNED  IOF_Established_Drivers(VOID)
+{
+
+
+#ifdef  NU_ENABLE_STACK_CHECK
+
+    /* Call stack checking function to check for an overflow condition.  */
+    TCT_Check_Stack();
+
+#endif
+
+    /* Return the number of established I/O drivers.  */
+    return(IOD_Total_Drivers);
+}
+
+
+/*************************************************************************/
+/*                                                                       */
+/* FUNCTION                                                              */
+/*                                                                       */
+/*      IOF_Driver_Pointers                                              */
+/*                                                                       */
+/* DESCRIPTION                                                           */
+/*                                                                       */
+/*      This function builds a list of driver  pointers, starting at the */
+/*      specified location.  The number of driver  pointers placed in    */
+/*      the list is equivalent to the total number of drivers or the     */
+/*      maximum number of pointers specified in the call.                */
+/*                                                                       */
+/* CALLED BY                                                             */
+/*                                                                       */
+/*      Application                                                      */
+/*                                                                       */
+/* CALLS                                                                 */
+/*                                                                       */
+/*      [TCT_Check_Stack]                   Stack checking function      */
+/*      TCT_Protect                         Protect created list         */
+/*      TCT_Unprotect                       Release protection           */
+/*                                                                       */
+/* INPUTS                                                                */
+/*                                                                       */
+/*      pointer_list                        Pointer to the list area     */
+/*      maximum_pointers                    Maximum number of pointers   */
+/*                                                                       */
+/* OUTPUTS                                                               */
+/*                                                                       */
+/*      pointers                            Number of I/O driver pointers*/
+/*                                            placed in the list         */
+/*                                                                       */
+/* HISTORY                                                               */
+/*                                                                       */
+/*        DATE                    REMARKS                                */
+/*                                                                       */
+/*      03-01-1993      Created initial version 1.0                      */
+/*      04-19-1993      Verified version 1.0                             */
+/*      08-09-1993      Corrected pointer retrieval                      */
+/*                      loop, resulting in version 1.0a                  */
+/*      08-09-1993      Verified version 1.0a                            */
+/*      03-01-1994      Changed function interface,                      */
+/*                      resulting in version 1.1                         */
+/*                                                                       */
+/*      03-18-1994      Verified version 1.1                             */
+/*                                                                       */
+/*************************************************************************/
+UNSIGNED  IOF_Driver_Pointers(NU_DRIVER **pointer_list,
+                                                UNSIGNED maximum_pointers)
+{
+CS_NODE         *node_ptr;                  /* Pointer to each NU_DRIVER */
+UNSIGNED         pointers;                  /* Number of pointers in list*/
+NU_SUPERV_USER_VARIABLES
+
+    /* Switch to supervisor mode */
+    NU_SUPERVISOR_MODE();
+
+#ifdef  NU_ENABLE_STACK_CHECK
+
+    /* Call stack checking function to check for an overflow condition.  */
+    TCT_Check_Stack();
+
+#endif
+
+    /* Initialize the number of pointers returned.  */
+    pointers =  0;
+
+    /* Protect against access to the list of created I/O drivers.  */
+    TCT_Protect(&IOD_List_Protect);
+
+    /* Loop until all driver  pointers are in the list or until the maximum
+       list size is reached.  */
+    node_ptr =  IOD_Created_Drivers_List;
+    while ((node_ptr) && (pointers < maximum_pointers))
+    {
+
+        /* Place the node into the destination list.  */
+        *pointer_list++ =  (NU_DRIVER *) node_ptr;
+
+        /* Increment the pointers variable.  */
+        pointers++;
+
+        /* Position the node pointer to the next node.  */
+        node_ptr =  node_ptr -> cs_next;
+
+        /* Determine if the pointer is at the head of the list.  */
+        if (node_ptr == IOD_Created_Drivers_List)
+
+            /* The list search is complete.  */
+            node_ptr =  NU_NULL;
+    }
+
+    /* Release protection against access to the list of created drivers.  */
+    TCT_Unprotect();
+
+    /* Return to user mode */
+    NU_USER_MODE();
+
+    /* Return the number of pointers in the list.  */
+    return(pointers);
+}
+
+
+
+
+
+