--********************************************************************************************************************
-- Created:  9-Mar-2021 22:28:27 by OpenVMS SDL EV3-3      
-- Source:  22-DEC-1993 12:41:27 $1$DGA8085:[LIB_ADA.LIS]IOHANDLEDEF.SDL;1 
--********************************************************************************************************************
with SYSTEM; use SYSTEM;
with STARLET; use STARLET;
with CONDITION_HANDLING; use CONDITION_HANDLING;
 
package IOHANDLEDEF is
 
--  module $IOHANDLEDEF
 
--+
-- This data structure contains mapping information for I/O devices.
---
 
    type IOHANDLE_BASE_VA_TYPE is
	record
	    BASE_VA	: INTEGER_32;
 
	    ----Component(s) below are defined as comments since they
	    ----overlap other fields
	    ----
	    ----BASE_VA_L	: INTEGER_32;
 
	    BASE_VA_H	: INTEGER_32;
	end record;
 
	    for IOHANDLE_BASE_VA_TYPE use 
		record
		    BASE_VA	at 16 range 0 .. 31;
 
		    ----Component representation spec(s) below are defined as
		    ----comments since they overlap other fields
		    ----
		    ----BASE_VA_L	at 16 range 0 .. 31;
 
		    BASE_VA_H	at 4 range 0 .. 31;
		end record;
	    for IOHANDLE_BASE_VA_TYPE'SIZE use 64;
 
    IOHANDLE_BASE_VA_TYPE_INIT : constant IOHANDLE_BASE_VA_TYPE := 
	    (
	    BASE_VA	=> 0,
	    BASE_VA_H	=> 0);
 
    type IOHANDLE_TYPE is
	record
	    FLINK	: ADDRESS;
	    BLINK	: ADDRESS;
	    SIZE	: UNSIGNED_WORD;
	    TYP		: UNSIGNED_BYTE;
	    SUBTYP	: UNSIGNED_BYTE;
	    BOFF	: UNSIGNED_LONGWORD;
	    BASE_VA	: IOHANDLE_BASE_VA_TYPE;
	    PLATFORM_PA	: UNSIGNED_QUADWORD;
	    BUS_PA	: UNSIGNED_QUADWORD;
	    BUS_REGION_SIZE	: UNSIGNED_LONGWORD;
	    MAPPED_REGION_SIZE	: UNSIGNED_LONGWORD;
	    ATTRIBUTES	: UNSIGNED_LONGWORD;
	    FILLER_1	: UNSIGNED_LONGWORD_ARRAY (1 .. 1);
	    FILLER_2	: UNSIGNED_LONGWORD_ARRAY (1 .. 2);
	end record;
 
	    for IOHANDLE_TYPE use 
		record
		    FLINK	at 0 range 0 .. 31;
		    BLINK	at 4 range 0 .. 31;
		    SIZE	at 8 range 0 .. 15;
		    TYP		at 10 range 0 .. 7;
		    SUBTYP	at 11 range 0 .. 7;
		    BOFF	at 12 range 0 .. 31;
		    BASE_VA	at 16 range 0 .. 63;
		    PLATFORM_PA	at 24 range 0 .. 63;
		    BUS_PA	at 32 range 0 .. 63;
		    BUS_REGION_SIZE	at 40 range 0 .. 31;
		    MAPPED_REGION_SIZE	at 44 range 0 .. 31;
		    ATTRIBUTES	at 48 range 0 .. 31;
		    FILLER_1	at 52 range 0 .. 31;
		    FILLER_2	at 56 range 0 .. 63;
		end record;
	    for IOHANDLE_TYPE'SIZE use 512;
 
    IOHANDLE_TYPE_INIT : constant IOHANDLE_TYPE := 
	    (FLINK	=> ADDRESS_ZERO,
	    BLINK	=> ADDRESS_ZERO,
	    SIZE	=> 0,
	    TYP		=> 0,
	    SUBTYP	=> 0,
	    BOFF	=> 0,
	    BASE_VA	=> IOHANDLE_BASE_VA_TYPE_INIT,
	    PLATFORM_PA	=> (0, 0),
	    BUS_PA	=> (0, 0),
	    BUS_REGION_SIZE	=> 0,
	    MAPPED_REGION_SIZE	=> 0,
	    ATTRIBUTES	=> 0,
	    FILLER_1	=> (others => 0),
	    FILLER_2	=> (others => 0));
 
    IOHANDLE_K_IOHANDLELEN	: constant := 64;
 
end IOHANDLEDEF;