--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gpf2/inc/nuc/pi_defs.h	Sun Sep 25 23:38:58 2016 +0000
@@ -0,0 +1,122 @@
+/*************************************************************************/
+/*                                                                       */
+/*        Copyright (c) 1993-1996 Accelerated Technology, Inc.           */
+/*                                                                       */
+/* PROPRIETARY RIGHTS of Accelerated Technology are involved in the      */
+/* subject matter of this material.  All manufacturing, reproduction,    */
+/* use, and sales rights pertaining to this subject matter are governed  */
+/* by the license agreement.  The recipient of this software implicitly  */
+/* accepts the terms of the license.                                     */
+/*                                                                       */
+/*************************************************************************/
+
+/*************************************************************************/
+/*                                                                       */
+/* FILE NAME                                            VERSION          */
+/*                                                                       */
+/*      pi_defs.h                                       PLUS  1.2        */
+/*                                                                       */
+/* COMPONENT                                                             */
+/*                                                                       */
+/*      PI - Pipe Management                                             */
+/*                                                                       */
+/* DESCRIPTION                                                           */
+/*                                                                       */
+/*      This file contains data structure definitions and constants for  */
+/*      the message Pipe component.                                      */
+/*                                                                       */
+/* AUTHOR                                                                */
+/*                                                                       */
+/*      William E. Lamie, Accelerated Technology, Inc.                   */
+/*                                                                       */
+/* DATA STRUCTURES                                                       */
+/*                                                                       */
+/*      PI_PCB                              Pipe control block           */
+/*      PI_SUSPEND                          Pipe suspension block        */
+/*                                                                       */
+/* FUNCTIONS                                                             */
+/*                                                                       */
+/*      None                                                             */
+/*                                                                       */
+/* DEPENDENCIES                                                          */
+/*                                                                       */
+/*      cs_defs.h                           Common service definitions   */
+/*      tc_defs.h                           Thread Control definitions   */
+/*                                                                       */
+/* HISTORY                                                               */
+/*                                                                       */
+/*         NAME            DATE                    REMARKS               */
+/*                                                                       */
+/*      W. Lamie        03-01-1993      Created initial version 1.0      */
+/*      D. Lamie        04-19-1993      Verified version 1.0             */
+/*      W. Lamie        03-01-1994      Moved include files outside of   */
+/*                                        the file #ifndef to allow the  */
+/*                                        use of actual data structures, */
+/*                                        removed protection structure,  */
+/*                                        put padding into structure,    */
+/*                                        resulting in version 1.1       */
+/*      R. Pfaff -                                                       */
+/*      D. Lamie        03-18-1994      Verified version 1.1             */
+/*      M.Q. Qian       04-17-1996      updated to version 1.2           */
+/*                                                                       */
+/*************************************************************************/
+
+#include        "cs_defs.h"                 /* Common service constants  */
+#include        "tc_defs.h"                 /* Thread control constants  */
+
+
+/* Check to see if the file has been included already.  */
+
+#ifndef PI_DEFS
+#define PI_DEFS
+
+
+/* Define constants local to this component.  */
+
+#define         PI_PIPE_ID              0x50495045UL
+
+
+/* Define the Pipe Control Block data type.  */
+
+typedef struct PI_PCB_STRUCT 
+{
+    CS_NODE             pi_created;            /* Node for linking to    */
+                                               /*   created pipe list    */
+    UNSIGNED            pi_id;                 /* Internal PCB ID        */
+    CHAR                pi_name[NU_MAX_NAME];  /* Pipe name              */
+    DATA_ELEMENT        pi_fixed_size;         /* Fixed-size messages?   */
+    DATA_ELEMENT        pi_fifo_suspend;       /* Suspension type flag   */
+#if     PAD_2
+    DATA_ELEMENT        pi_padding[PAD_2];
+#endif
+    UNSIGNED            pi_pipe_size;          /* Total size of pipe     */
+    UNSIGNED            pi_messages;           /* Messages in pipe       */
+    UNSIGNED            pi_message_size;       /* Size of each message   */
+    UNSIGNED            pi_available;          /* Available bytes        */
+    BYTE_PTR            pi_start;              /* Start of pipe area     */
+    BYTE_PTR            pi_end;                /* End of pipe area + 1   */
+    BYTE_PTR            pi_read;               /* Read pointer           */
+    BYTE_PTR            pi_write;              /* Write pointer          */
+    UNSIGNED            pi_tasks_waiting;      /* Number of waiting tasks*/
+    struct PI_SUSPEND_STRUCT
+                       *pi_urgent_list;        /* Urgent message suspend */
+    struct PI_SUSPEND_STRUCT
+                       *pi_suspension_list;    /* Suspension list        */
+} PI_PCB;    
+
+
+/* Define the Pipe suspension structure.  This structure is allocated off of
+   the caller's stack.  */
+   
+typedef struct PI_SUSPEND_STRUCT
+{
+    CS_NODE             pi_suspend_link;       /* Link to suspend blocks */
+    PI_PCB             *pi_pipe;               /* Pointer to the pipe    */
+    TC_TCB             *pi_suspended_task;     /* Task suspended         */
+    BYTE_PTR            pi_message_area;       /* Pointer to message area*/
+    UNSIGNED            pi_message_size;       /* Message size requested */
+    UNSIGNED            pi_actual_size;        /* Actual size of message */
+    STATUS              pi_return_status;      /* Return status          */
+} PI_SUSPEND;
+
+#endif